/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.6.1.ufo.UNBOUNDED.pals.c.v+nlh-reducer.c -------------------------------------------------------------------------------- This is Ultimate 0.2.3-dev-f954360 [2023-04-02 06:38:46,189 INFO L177 SettingsManager]: Resetting all preferences to default values... [2023-04-02 06:38:46,191 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2023-04-02 06:38:46,229 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2023-04-02 06:38:46,229 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2023-04-02 06:38:46,231 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2023-04-02 06:38:46,234 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2023-04-02 06:38:46,237 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2023-04-02 06:38:46,238 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2023-04-02 06:38:46,243 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2023-04-02 06:38:46,244 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2023-04-02 06:38:46,245 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2023-04-02 06:38:46,246 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2023-04-02 06:38:46,248 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2023-04-02 06:38:46,249 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2023-04-02 06:38:46,250 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2023-04-02 06:38:46,250 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2023-04-02 06:38:46,251 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2023-04-02 06:38:46,252 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2023-04-02 06:38:46,257 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2023-04-02 06:38:46,258 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2023-04-02 06:38:46,259 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2023-04-02 06:38:46,259 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2023-04-02 06:38:46,260 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2023-04-02 06:38:46,264 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2023-04-02 06:38:46,266 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2023-04-02 06:38:46,266 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2023-04-02 06:38:46,267 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2023-04-02 06:38:46,267 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2023-04-02 06:38:46,268 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2023-04-02 06:38:46,268 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2023-04-02 06:38:46,268 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2023-04-02 06:38:46,269 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2023-04-02 06:38:46,269 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2023-04-02 06:38:46,269 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2023-04-02 06:38:46,270 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2023-04-02 06:38:46,271 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 06:38:46,294 INFO L113 SettingsManager]: Loading preferences was successful [2023-04-02 06:38:46,295 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2023-04-02 06:38:46,295 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-04-02 06:38:46,295 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-04-02 06:38:46,296 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-04-02 06:38:46,297 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-04-02 06:38:46,297 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-04-02 06:38:46,297 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2023-04-02 06:38:46,297 INFO L138 SettingsManager]: * Use SBE=true [2023-04-02 06:38:46,297 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-04-02 06:38:46,298 INFO L138 SettingsManager]: * sizeof long=4 [2023-04-02 06:38:46,298 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2023-04-02 06:38:46,298 INFO L138 SettingsManager]: * sizeof POINTER=4 [2023-04-02 06:38:46,298 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2023-04-02 06:38:46,299 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-04-02 06:38:46,299 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-04-02 06:38:46,299 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-04-02 06:38:46,299 INFO L138 SettingsManager]: * sizeof long double=12 [2023-04-02 06:38:46,299 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2023-04-02 06:38:46,299 INFO L138 SettingsManager]: * Use constant arrays=true [2023-04-02 06:38:46,299 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-04-02 06:38:46,299 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-04-02 06:38:46,300 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-04-02 06:38:46,300 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2023-04-02 06:38:46,300 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-04-02 06:38:46,300 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-04-02 06:38:46,300 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-04-02 06:38:46,300 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-04-02 06:38:46,300 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2023-04-02 06:38:46,301 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-04-02 06:38:46,301 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-04-02 06:38:46,301 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-04-02 06:38:46,301 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-04-02 06:38:46,301 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-04-02 06:38:46,301 INFO L138 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-04-02 06:38:46,301 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2023-04-02 06:38:46,529 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-04-02 06:38:46,555 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-04-02 06:38:46,558 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-04-02 06:38:46,559 INFO L271 PluginConnector]: Initializing CDTParser... [2023-04-02 06:38:46,560 INFO L275 PluginConnector]: CDTParser initialized [2023-04-02 06:38:46,561 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.6.1.ufo.UNBOUNDED.pals.c.v+nlh-reducer.c [2023-04-02 06:38:47,745 INFO L500 CDTParser]: Created temporary CDT project at NULL [2023-04-02 06:38:47,978 INFO L351 CDTParser]: Found 1 translation units. [2023-04-02 06:38:47,978 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.6.1.ufo.UNBOUNDED.pals.c.v+nlh-reducer.c [2023-04-02 06:38:47,987 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/5e34c6292/235b2443bf7f454cbf90525f6bd8a8d9/FLAG00ba741d2 [2023-04-02 06:38:47,998 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/5e34c6292/235b2443bf7f454cbf90525f6bd8a8d9 [2023-04-02 06:38:48,001 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-04-02 06:38:48,002 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2023-04-02 06:38:48,003 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-04-02 06:38:48,003 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-04-02 06:38:48,006 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2023-04-02 06:38:48,006 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.04 06:38:47" (1/1) ... [2023-04-02 06:38:48,007 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6c39708d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.04 06:38:48, skipping insertion in model container [2023-04-02 06:38:48,007 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.04 06:38:47" (1/1) ... [2023-04-02 06:38:48,013 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2023-04-02 06:38:48,053 INFO L178 MainTranslator]: Built tables and reachable declarations [2023-04-02 06:38:48,242 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.6.1.ufo.UNBOUNDED.pals.c.v+nlh-reducer.c[9094,9107] [2023-04-02 06:38:48,287 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-04-02 06:38:48,301 INFO L203 MainTranslator]: Completed pre-run [2023-04-02 06:38:48,372 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.6.1.ufo.UNBOUNDED.pals.c.v+nlh-reducer.c[9094,9107] [2023-04-02 06:38:48,396 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-04-02 06:38:48,412 INFO L208 MainTranslator]: Completed translation [2023-04-02 06:38:48,412 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.04 06:38:48 WrapperNode [2023-04-02 06:38:48,412 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-04-02 06:38:48,414 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-04-02 06:38:48,414 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2023-04-02 06:38:48,414 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2023-04-02 06:38:48,423 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.04 06:38:48" (1/1) ... [2023-04-02 06:38:48,424 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.04 06:38:48" (1/1) ... [2023-04-02 06:38:48,434 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.04 06:38:48" (1/1) ... [2023-04-02 06:38:48,436 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.04 06:38:48" (1/1) ... [2023-04-02 06:38:48,451 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.04 06:38:48" (1/1) ... [2023-04-02 06:38:48,459 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.04 06:38:48" (1/1) ... [2023-04-02 06:38:48,462 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.04 06:38:48" (1/1) ... [2023-04-02 06:38:48,465 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.04 06:38:48" (1/1) ... [2023-04-02 06:38:48,469 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-04-02 06:38:48,470 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-04-02 06:38:48,470 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2023-04-02 06:38:48,471 INFO L275 PluginConnector]: RCFGBuilder initialized [2023-04-02 06:38:48,471 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.04 06:38:48" (1/1) ... [2023-04-02 06:38:48,477 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-04-02 06:38:48,487 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-04-02 06:38:48,503 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 06:38:48,534 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 06:38:48,551 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2023-04-02 06:38:48,551 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-04-02 06:38:48,553 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2023-04-02 06:38:48,554 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2023-04-02 06:38:48,554 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2023-04-02 06:38:48,554 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2023-04-02 06:38:48,554 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2023-04-02 06:38:48,554 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2023-04-02 06:38:48,554 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-04-02 06:38:48,554 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_bool [2023-04-02 06:38:48,554 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_char [2023-04-02 06:38:48,554 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_uchar [2023-04-02 06:38:48,554 INFO L130 BoogieDeclarations]: Found specification of procedure assert [2023-04-02 06:38:48,555 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2023-04-02 06:38:48,555 INFO L130 BoogieDeclarations]: Found specification of procedure read [2023-04-02 06:38:48,555 INFO L130 BoogieDeclarations]: Found specification of procedure write [2023-04-02 06:38:48,555 INFO L130 BoogieDeclarations]: Found specification of procedure node1 [2023-04-02 06:38:48,555 INFO L130 BoogieDeclarations]: Found specification of procedure node2 [2023-04-02 06:38:48,555 INFO L130 BoogieDeclarations]: Found specification of procedure node3 [2023-04-02 06:38:48,555 INFO L130 BoogieDeclarations]: Found specification of procedure node4 [2023-04-02 06:38:48,555 INFO L130 BoogieDeclarations]: Found specification of procedure node5 [2023-04-02 06:38:48,555 INFO L130 BoogieDeclarations]: Found specification of procedure node6 [2023-04-02 06:38:48,555 INFO L130 BoogieDeclarations]: Found specification of procedure init [2023-04-02 06:38:48,556 INFO L130 BoogieDeclarations]: Found specification of procedure check [2023-04-02 06:38:48,556 INFO L130 BoogieDeclarations]: Found specification of procedure main [2023-04-02 06:38:48,556 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2023-04-02 06:38:48,556 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-04-02 06:38:48,556 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-04-02 06:38:48,556 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-04-02 06:38:48,556 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-04-02 06:38:48,556 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-04-02 06:38:48,722 INFO L236 CfgBuilder]: Building ICFG [2023-04-02 06:38:48,724 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-04-02 06:38:49,315 INFO L277 CfgBuilder]: Performing block encoding [2023-04-02 06:38:49,322 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-04-02 06:38:49,323 INFO L302 CfgBuilder]: Removed 0 assume(true) statements. [2023-04-02 06:38:49,324 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.04 06:38:49 BoogieIcfgContainer [2023-04-02 06:38:49,324 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-04-02 06:38:49,326 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-04-02 06:38:49,326 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2023-04-02 06:38:49,329 INFO L275 PluginConnector]: TraceAbstraction initialized [2023-04-02 06:38:49,329 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 02.04 06:38:47" (1/3) ... [2023-04-02 06:38:49,330 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5ef13d7f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.04 06:38:49, skipping insertion in model container [2023-04-02 06:38:49,330 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.04 06:38:48" (2/3) ... [2023-04-02 06:38:49,330 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5ef13d7f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.04 06:38:49, skipping insertion in model container [2023-04-02 06:38:49,330 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.04 06:38:49" (3/3) ... [2023-04-02 06:38:49,331 INFO L112 eAbstractionObserver]: Analyzing ICFG pals_lcr.6.1.ufo.UNBOUNDED.pals.c.v+nlh-reducer.c [2023-04-02 06:38:49,346 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-04-02 06:38:49,346 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-04-02 06:38:49,389 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-04-02 06:38:49,395 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;@4273acf4, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-04-02 06:38:49,395 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-04-02 06:38:49,401 INFO L276 IsEmpty]: Start isEmpty. Operand has 183 states, 176 states have (on average 1.7556818181818181) internal successors, (309), 178 states have internal predecessors, (309), 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 06:38:49,413 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2023-04-02 06:38:49,414 INFO L187 NwaCegarLoop]: Found error trace [2023-04-02 06:38:49,415 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-02 06:38:49,416 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-02 06:38:49,420 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-02 06:38:49,421 INFO L85 PathProgramCache]: Analyzing trace with hash -2082222064, now seen corresponding path program 1 times [2023-04-02 06:38:49,428 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-02 06:38:49,429 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [994707067] [2023-04-02 06:38:49,429 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 06:38:49,430 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-02 06:38:49,680 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 06:38:50,402 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-02 06:38:50,409 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 06:38:50,423 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 06:38:50,423 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-02 06:38:50,423 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [994707067] [2023-04-02 06:38:50,424 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [994707067] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-02 06:38:50,424 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-02 06:38:50,424 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2023-04-02 06:38:50,426 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1765511892] [2023-04-02 06:38:50,426 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-02 06:38:50,432 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-04-02 06:38:50,432 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-02 06:38:50,480 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-04-02 06:38:50,481 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2023-04-02 06:38:50,485 INFO L87 Difference]: Start difference. First operand has 183 states, 176 states have (on average 1.7556818181818181) internal successors, (309), 178 states have internal predecessors, (309), 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 9 states, 9 states have (on average 10.11111111111111) internal successors, (91), 8 states have internal predecessors, (91), 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 06:38:52,623 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-02 06:38:52,624 INFO L93 Difference]: Finished difference Result 1156 states and 1843 transitions. [2023-04-02 06:38:52,625 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-04-02 06:38:52,626 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 10.11111111111111) internal successors, (91), 8 states have internal predecessors, (91), 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 94 [2023-04-02 06:38:52,627 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-02 06:38:52,641 INFO L225 Difference]: With dead ends: 1156 [2023-04-02 06:38:52,641 INFO L226 Difference]: Without dead ends: 1028 [2023-04-02 06:38:52,645 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=111, Invalid=231, Unknown=0, NotChecked=0, Total=342 [2023-04-02 06:38:52,647 INFO L413 NwaCegarLoop]: 728 mSDtfsCounter, 2025 mSDsluCounter, 3934 mSDsCounter, 0 mSdLazyCounter, 1089 mSolverCounterSat, 28 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2025 SdHoareTripleChecker+Valid, 4662 SdHoareTripleChecker+Invalid, 1117 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 28 IncrementalHoareTripleChecker+Valid, 1089 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2023-04-02 06:38:52,648 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2025 Valid, 4662 Invalid, 1117 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [28 Valid, 1089 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2023-04-02 06:38:52,664 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1028 states. [2023-04-02 06:38:52,714 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1028 to 271. [2023-04-02 06:38:52,716 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 271 states, 267 states have (on average 1.449438202247191) internal successors, (387), 267 states have internal predecessors, (387), 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 06:38:52,717 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 271 states to 271 states and 390 transitions. [2023-04-02 06:38:52,718 INFO L78 Accepts]: Start accepts. Automaton has 271 states and 390 transitions. Word has length 94 [2023-04-02 06:38:52,719 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-02 06:38:52,719 INFO L495 AbstractCegarLoop]: Abstraction has 271 states and 390 transitions. [2023-04-02 06:38:52,719 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 10.11111111111111) internal successors, (91), 8 states have internal predecessors, (91), 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 06:38:52,719 INFO L276 IsEmpty]: Start isEmpty. Operand 271 states and 390 transitions. [2023-04-02 06:38:52,722 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 97 [2023-04-02 06:38:52,722 INFO L187 NwaCegarLoop]: Found error trace [2023-04-02 06:38:52,722 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-02 06:38:52,722 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-04-02 06:38:52,722 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-02 06:38:52,723 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-02 06:38:52,723 INFO L85 PathProgramCache]: Analyzing trace with hash -1833771758, now seen corresponding path program 1 times [2023-04-02 06:38:52,723 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-02 06:38:52,724 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [712734445] [2023-04-02 06:38:52,724 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 06:38:52,724 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-02 06:38:52,755 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 06:38:53,119 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-02 06:38:53,127 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 06:38:53,138 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 06:38:53,139 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-02 06:38:53,139 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [712734445] [2023-04-02 06:38:53,140 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [712734445] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-02 06:38:53,140 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-02 06:38:53,140 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2023-04-02 06:38:53,140 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [737615555] [2023-04-02 06:38:53,140 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-02 06:38:53,141 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-04-02 06:38:53,142 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-02 06:38:53,143 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-04-02 06:38:53,143 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2023-04-02 06:38:53,143 INFO L87 Difference]: Start difference. First operand 271 states and 390 transitions. Second operand has 9 states, 9 states have (on average 10.333333333333334) internal successors, (93), 8 states have internal predecessors, (93), 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 06:38:54,710 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-02 06:38:54,711 INFO L93 Difference]: Finished difference Result 1224 states and 1892 transitions. [2023-04-02 06:38:54,711 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-04-02 06:38:54,712 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 10.333333333333334) internal successors, (93), 8 states have internal predecessors, (93), 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 96 [2023-04-02 06:38:54,712 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-02 06:38:54,717 INFO L225 Difference]: With dead ends: 1224 [2023-04-02 06:38:54,717 INFO L226 Difference]: Without dead ends: 1086 [2023-04-02 06:38:54,719 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=68, Invalid=142, Unknown=0, NotChecked=0, Total=210 [2023-04-02 06:38:54,720 INFO L413 NwaCegarLoop]: 687 mSDtfsCounter, 1442 mSDsluCounter, 1757 mSDsCounter, 0 mSdLazyCounter, 887 mSolverCounterSat, 17 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1442 SdHoareTripleChecker+Valid, 2444 SdHoareTripleChecker+Invalid, 904 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 887 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2023-04-02 06:38:54,721 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1442 Valid, 2444 Invalid, 904 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [17 Valid, 887 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2023-04-02 06:38:54,722 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1086 states. [2023-04-02 06:38:54,793 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1086 to 334. [2023-04-02 06:38:54,794 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 334 states, 330 states have (on average 1.4757575757575758) internal successors, (487), 330 states have internal predecessors, (487), 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 06:38:54,796 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 334 states to 334 states and 490 transitions. [2023-04-02 06:38:54,796 INFO L78 Accepts]: Start accepts. Automaton has 334 states and 490 transitions. Word has length 96 [2023-04-02 06:38:54,797 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-02 06:38:54,797 INFO L495 AbstractCegarLoop]: Abstraction has 334 states and 490 transitions. [2023-04-02 06:38:54,797 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 10.333333333333334) internal successors, (93), 8 states have internal predecessors, (93), 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 06:38:54,797 INFO L276 IsEmpty]: Start isEmpty. Operand 334 states and 490 transitions. [2023-04-02 06:38:54,798 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 97 [2023-04-02 06:38:54,798 INFO L187 NwaCegarLoop]: Found error trace [2023-04-02 06:38:54,799 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 06:38:54,799 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-04-02 06:38:54,799 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-02 06:38:54,799 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-02 06:38:54,800 INFO L85 PathProgramCache]: Analyzing trace with hash -1843430877, now seen corresponding path program 1 times [2023-04-02 06:38:54,800 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-02 06:38:54,800 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1939108988] [2023-04-02 06:38:54,800 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 06:38:54,800 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-02 06:38:54,828 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 06:38:55,142 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-02 06:38:55,148 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 06:38:55,154 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 06:38:55,154 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-02 06:38:55,155 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1939108988] [2023-04-02 06:38:55,155 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1939108988] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-02 06:38:55,155 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-02 06:38:55,155 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2023-04-02 06:38:55,155 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [758866614] [2023-04-02 06:38:55,155 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-02 06:38:55,156 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-04-02 06:38:55,156 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-02 06:38:55,156 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-04-02 06:38:55,157 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2023-04-02 06:38:55,157 INFO L87 Difference]: Start difference. First operand 334 states and 490 transitions. Second operand has 9 states, 9 states have (on average 10.333333333333334) internal successors, (93), 8 states have internal predecessors, (93), 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 06:38:56,573 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-02 06:38:56,573 INFO L93 Difference]: Finished difference Result 1313 states and 2033 transitions. [2023-04-02 06:38:56,574 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-04-02 06:38:56,574 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 10.333333333333334) internal successors, (93), 8 states have internal predecessors, (93), 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 96 [2023-04-02 06:38:56,575 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-02 06:38:56,579 INFO L225 Difference]: With dead ends: 1313 [2023-04-02 06:38:56,580 INFO L226 Difference]: Without dead ends: 1175 [2023-04-02 06:38:56,581 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=68, Invalid=142, Unknown=0, NotChecked=0, Total=210 [2023-04-02 06:38:56,582 INFO L413 NwaCegarLoop]: 576 mSDtfsCounter, 1435 mSDsluCounter, 1399 mSDsCounter, 0 mSdLazyCounter, 752 mSolverCounterSat, 17 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1435 SdHoareTripleChecker+Valid, 1975 SdHoareTripleChecker+Invalid, 769 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 752 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2023-04-02 06:38:56,582 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1435 Valid, 1975 Invalid, 769 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [17 Valid, 752 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2023-04-02 06:38:56,584 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1175 states. [2023-04-02 06:38:56,646 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1175 to 517. [2023-04-02 06:38:56,647 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 517 states, 513 states have (on average 1.5146198830409356) internal successors, (777), 513 states have internal predecessors, (777), 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 06:38:56,649 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 517 states to 517 states and 780 transitions. [2023-04-02 06:38:56,649 INFO L78 Accepts]: Start accepts. Automaton has 517 states and 780 transitions. Word has length 96 [2023-04-02 06:38:56,650 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-02 06:38:56,650 INFO L495 AbstractCegarLoop]: Abstraction has 517 states and 780 transitions. [2023-04-02 06:38:56,650 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 10.333333333333334) internal successors, (93), 8 states have internal predecessors, (93), 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 06:38:56,650 INFO L276 IsEmpty]: Start isEmpty. Operand 517 states and 780 transitions. [2023-04-02 06:38:56,652 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 97 [2023-04-02 06:38:56,652 INFO L187 NwaCegarLoop]: Found error trace [2023-04-02 06:38:56,652 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-02 06:38:56,652 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-04-02 06:38:56,652 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-02 06:38:56,653 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-02 06:38:56,653 INFO L85 PathProgramCache]: Analyzing trace with hash -396279027, now seen corresponding path program 1 times [2023-04-02 06:38:56,653 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-02 06:38:56,653 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1344382659] [2023-04-02 06:38:56,653 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 06:38:56,653 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-02 06:38:56,677 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 06:38:56,997 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-02 06:38:57,003 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 06:38:57,010 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 06:38:57,010 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-02 06:38:57,011 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1344382659] [2023-04-02 06:38:57,011 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1344382659] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-02 06:38:57,011 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-02 06:38:57,011 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2023-04-02 06:38:57,011 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [729869947] [2023-04-02 06:38:57,011 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-02 06:38:57,012 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-04-02 06:38:57,012 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-02 06:38:57,013 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-04-02 06:38:57,013 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2023-04-02 06:38:57,013 INFO L87 Difference]: Start difference. First operand 517 states and 780 transitions. Second operand has 9 states, 9 states have (on average 10.333333333333334) internal successors, (93), 8 states have internal predecessors, (93), 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 06:38:58,149 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-02 06:38:58,150 INFO L93 Difference]: Finished difference Result 1397 states and 2166 transitions. [2023-04-02 06:38:58,150 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-04-02 06:38:58,151 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 10.333333333333334) internal successors, (93), 8 states have internal predecessors, (93), 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 96 [2023-04-02 06:38:58,151 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-02 06:38:58,156 INFO L225 Difference]: With dead ends: 1397 [2023-04-02 06:38:58,156 INFO L226 Difference]: Without dead ends: 1259 [2023-04-02 06:38:58,157 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=68, Invalid=142, Unknown=0, NotChecked=0, Total=210 [2023-04-02 06:38:58,159 INFO L413 NwaCegarLoop]: 458 mSDtfsCounter, 1640 mSDsluCounter, 1387 mSDsCounter, 0 mSdLazyCounter, 612 mSolverCounterSat, 17 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1640 SdHoareTripleChecker+Valid, 1845 SdHoareTripleChecker+Invalid, 629 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 612 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2023-04-02 06:38:58,159 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1640 Valid, 1845 Invalid, 629 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [17 Valid, 612 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2023-04-02 06:38:58,161 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1259 states. [2023-04-02 06:38:58,242 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1259 to 596. [2023-04-02 06:38:58,243 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 596 states, 592 states have (on average 1.5236486486486487) internal successors, (902), 592 states have internal predecessors, (902), 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 06:38:58,246 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 596 states to 596 states and 905 transitions. [2023-04-02 06:38:58,246 INFO L78 Accepts]: Start accepts. Automaton has 596 states and 905 transitions. Word has length 96 [2023-04-02 06:38:58,246 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-02 06:38:58,246 INFO L495 AbstractCegarLoop]: Abstraction has 596 states and 905 transitions. [2023-04-02 06:38:58,246 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 10.333333333333334) internal successors, (93), 8 states have internal predecessors, (93), 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 06:38:58,247 INFO L276 IsEmpty]: Start isEmpty. Operand 596 states and 905 transitions. [2023-04-02 06:38:58,248 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 97 [2023-04-02 06:38:58,248 INFO L187 NwaCegarLoop]: Found error trace [2023-04-02 06:38:58,248 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-02 06:38:58,248 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-04-02 06:38:58,248 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-02 06:38:58,249 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-02 06:38:58,249 INFO L85 PathProgramCache]: Analyzing trace with hash 754291518, now seen corresponding path program 1 times [2023-04-02 06:38:58,249 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-02 06:38:58,249 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1366960248] [2023-04-02 06:38:58,249 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 06:38:58,249 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-02 06:38:58,271 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 06:38:58,582 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-02 06:38:58,587 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 06:38:58,595 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 06:38:58,595 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-02 06:38:58,595 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1366960248] [2023-04-02 06:38:58,595 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1366960248] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-02 06:38:58,596 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-02 06:38:58,596 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2023-04-02 06:38:58,596 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1948185579] [2023-04-02 06:38:58,596 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-02 06:38:58,596 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-04-02 06:38:58,597 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-02 06:38:58,597 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-04-02 06:38:58,597 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2023-04-02 06:38:58,598 INFO L87 Difference]: Start difference. First operand 596 states and 905 transitions. Second operand has 9 states, 9 states have (on average 10.333333333333334) internal successors, (93), 8 states have internal predecessors, (93), 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 06:38:59,625 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-02 06:38:59,625 INFO L93 Difference]: Finished difference Result 1471 states and 2283 transitions. [2023-04-02 06:38:59,625 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-04-02 06:38:59,626 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 10.333333333333334) internal successors, (93), 8 states have internal predecessors, (93), 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 96 [2023-04-02 06:38:59,626 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-02 06:38:59,632 INFO L225 Difference]: With dead ends: 1471 [2023-04-02 06:38:59,632 INFO L226 Difference]: Without dead ends: 1333 [2023-04-02 06:38:59,633 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=68, Invalid=142, Unknown=0, NotChecked=0, Total=210 [2023-04-02 06:38:59,634 INFO L413 NwaCegarLoop]: 348 mSDtfsCounter, 2053 mSDsluCounter, 1384 mSDsCounter, 0 mSdLazyCounter, 483 mSolverCounterSat, 17 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2053 SdHoareTripleChecker+Valid, 1732 SdHoareTripleChecker+Invalid, 500 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 483 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2023-04-02 06:38:59,634 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2053 Valid, 1732 Invalid, 500 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [17 Valid, 483 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2023-04-02 06:38:59,636 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1333 states. [2023-04-02 06:38:59,758 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1333 to 670. [2023-04-02 06:38:59,760 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 670 states, 666 states have (on average 1.53003003003003) internal successors, (1019), 666 states have internal predecessors, (1019), 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 06:38:59,764 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 670 states to 670 states and 1022 transitions. [2023-04-02 06:38:59,764 INFO L78 Accepts]: Start accepts. Automaton has 670 states and 1022 transitions. Word has length 96 [2023-04-02 06:38:59,764 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-02 06:38:59,764 INFO L495 AbstractCegarLoop]: Abstraction has 670 states and 1022 transitions. [2023-04-02 06:38:59,765 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 10.333333333333334) internal successors, (93), 8 states have internal predecessors, (93), 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 06:38:59,765 INFO L276 IsEmpty]: Start isEmpty. Operand 670 states and 1022 transitions. [2023-04-02 06:38:59,766 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 97 [2023-04-02 06:38:59,766 INFO L187 NwaCegarLoop]: Found error trace [2023-04-02 06:38:59,766 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-02 06:38:59,766 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-04-02 06:38:59,766 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-02 06:38:59,767 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-02 06:38:59,767 INFO L85 PathProgramCache]: Analyzing trace with hash 1680006068, now seen corresponding path program 1 times [2023-04-02 06:38:59,768 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-02 06:38:59,768 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2086453952] [2023-04-02 06:38:59,768 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 06:38:59,768 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-02 06:38:59,789 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 06:39:00,236 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-02 06:39:00,241 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 06:39:00,248 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 06:39:00,248 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-02 06:39:00,248 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2086453952] [2023-04-02 06:39:00,248 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2086453952] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-02 06:39:00,248 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-02 06:39:00,248 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2023-04-02 06:39:00,249 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1410138907] [2023-04-02 06:39:00,249 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-02 06:39:00,249 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-04-02 06:39:00,249 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-02 06:39:00,250 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-04-02 06:39:00,250 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2023-04-02 06:39:00,250 INFO L87 Difference]: Start difference. First operand 670 states and 1022 transitions. Second operand has 9 states, 9 states have (on average 10.333333333333334) internal successors, (93), 8 states have internal predecessors, (93), 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 06:39:01,129 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-02 06:39:01,129 INFO L93 Difference]: Finished difference Result 1422 states and 2213 transitions. [2023-04-02 06:39:01,130 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-04-02 06:39:01,130 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 10.333333333333334) internal successors, (93), 8 states have internal predecessors, (93), 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 96 [2023-04-02 06:39:01,131 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-02 06:39:01,134 INFO L225 Difference]: With dead ends: 1422 [2023-04-02 06:39:01,134 INFO L226 Difference]: Without dead ends: 944 [2023-04-02 06:39:01,135 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=65, Invalid=117, Unknown=0, NotChecked=0, Total=182 [2023-04-02 06:39:01,136 INFO L413 NwaCegarLoop]: 230 mSDtfsCounter, 722 mSDsluCounter, 732 mSDsCounter, 0 mSdLazyCounter, 341 mSolverCounterSat, 19 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 722 SdHoareTripleChecker+Valid, 962 SdHoareTripleChecker+Invalid, 360 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 19 IncrementalHoareTripleChecker+Valid, 341 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-04-02 06:39:01,136 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [722 Valid, 962 Invalid, 360 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [19 Valid, 341 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-04-02 06:39:01,138 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 944 states. [2023-04-02 06:39:01,300 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 944 to 942. [2023-04-02 06:39:01,302 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 942 states, 938 states have (on average 1.5405117270788913) internal successors, (1445), 938 states have internal predecessors, (1445), 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 06:39:01,305 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 942 states to 942 states and 1448 transitions. [2023-04-02 06:39:01,305 INFO L78 Accepts]: Start accepts. Automaton has 942 states and 1448 transitions. Word has length 96 [2023-04-02 06:39:01,305 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-02 06:39:01,305 INFO L495 AbstractCegarLoop]: Abstraction has 942 states and 1448 transitions. [2023-04-02 06:39:01,306 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 10.333333333333334) internal successors, (93), 8 states have internal predecessors, (93), 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 06:39:01,306 INFO L276 IsEmpty]: Start isEmpty. Operand 942 states and 1448 transitions. [2023-04-02 06:39:01,306 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 97 [2023-04-02 06:39:01,307 INFO L187 NwaCegarLoop]: Found error trace [2023-04-02 06:39:01,307 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-02 06:39:01,307 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-04-02 06:39:01,307 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-02 06:39:01,307 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-02 06:39:01,307 INFO L85 PathProgramCache]: Analyzing trace with hash 1436881717, now seen corresponding path program 1 times [2023-04-02 06:39:01,308 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-02 06:39:01,308 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [600972139] [2023-04-02 06:39:01,308 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 06:39:01,308 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-02 06:39:01,336 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 06:39:01,533 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-02 06:39:01,539 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 06:39:01,546 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 06:39:01,546 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-02 06:39:01,546 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [600972139] [2023-04-02 06:39:01,547 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [600972139] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-02 06:39:01,547 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-02 06:39:01,547 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-04-02 06:39:01,547 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [850473997] [2023-04-02 06:39:01,547 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-02 06:39:01,547 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-04-02 06:39:01,548 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-02 06:39:01,548 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-04-02 06:39:01,548 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-04-02 06:39:01,548 INFO L87 Difference]: Start difference. First operand 942 states and 1448 transitions. Second operand has 4 states, 4 states have (on average 23.25) internal successors, (93), 3 states have internal predecessors, (93), 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 06:39:02,088 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-02 06:39:02,088 INFO L93 Difference]: Finished difference Result 1698 states and 2638 transitions. [2023-04-02 06:39:02,089 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-04-02 06:39:02,089 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 23.25) internal successors, (93), 3 states have internal predecessors, (93), 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 96 [2023-04-02 06:39:02,089 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-02 06:39:02,092 INFO L225 Difference]: With dead ends: 1698 [2023-04-02 06:39:02,093 INFO L226 Difference]: Without dead ends: 937 [2023-04-02 06:39:02,094 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-04-02 06:39:02,095 INFO L413 NwaCegarLoop]: 239 mSDtfsCounter, 0 mSDsluCounter, 231 mSDsCounter, 0 mSdLazyCounter, 250 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 470 SdHoareTripleChecker+Invalid, 251 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 250 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-04-02 06:39:02,095 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 470 Invalid, 251 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 250 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-04-02 06:39:02,096 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 937 states. [2023-04-02 06:39:02,242 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 937 to 937. [2023-04-02 06:39:02,244 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 937 states, 933 states have (on average 1.5316184351554127) internal successors, (1429), 933 states have internal predecessors, (1429), 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 06:39:02,247 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 937 states to 937 states and 1432 transitions. [2023-04-02 06:39:02,247 INFO L78 Accepts]: Start accepts. Automaton has 937 states and 1432 transitions. Word has length 96 [2023-04-02 06:39:02,248 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-02 06:39:02,248 INFO L495 AbstractCegarLoop]: Abstraction has 937 states and 1432 transitions. [2023-04-02 06:39:02,248 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 23.25) internal successors, (93), 3 states have internal predecessors, (93), 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 06:39:02,248 INFO L276 IsEmpty]: Start isEmpty. Operand 937 states and 1432 transitions. [2023-04-02 06:39:02,249 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 97 [2023-04-02 06:39:02,249 INFO L187 NwaCegarLoop]: Found error trace [2023-04-02 06:39:02,249 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-02 06:39:02,249 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-04-02 06:39:02,250 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-02 06:39:02,250 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-02 06:39:02,250 INFO L85 PathProgramCache]: Analyzing trace with hash -1709749513, now seen corresponding path program 1 times [2023-04-02 06:39:02,250 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-02 06:39:02,250 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1004426031] [2023-04-02 06:39:02,250 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 06:39:02,251 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-02 06:39:02,271 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 06:39:02,568 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-02 06:39:02,572 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 06:39:02,578 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 06:39:02,578 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-02 06:39:02,579 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1004426031] [2023-04-02 06:39:02,579 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1004426031] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-02 06:39:02,579 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-02 06:39:02,579 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2023-04-02 06:39:02,579 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1905520093] [2023-04-02 06:39:02,579 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-02 06:39:02,579 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-04-02 06:39:02,580 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-02 06:39:02,580 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-04-02 06:39:02,580 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2023-04-02 06:39:02,580 INFO L87 Difference]: Start difference. First operand 937 states and 1432 transitions. Second operand has 9 states, 9 states have (on average 10.333333333333334) internal successors, (93), 8 states have internal predecessors, (93), 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 06:39:03,891 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-02 06:39:03,892 INFO L93 Difference]: Finished difference Result 1801 states and 2778 transitions. [2023-04-02 06:39:03,892 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-04-02 06:39:03,892 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 10.333333333333334) internal successors, (93), 8 states have internal predecessors, (93), 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 96 [2023-04-02 06:39:03,893 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-02 06:39:03,898 INFO L225 Difference]: With dead ends: 1801 [2023-04-02 06:39:03,898 INFO L226 Difference]: Without dead ends: 1664 [2023-04-02 06:39:03,899 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=68, Invalid=142, Unknown=0, NotChecked=0, Total=210 [2023-04-02 06:39:03,900 INFO L413 NwaCegarLoop]: 441 mSDtfsCounter, 1537 mSDsluCounter, 1682 mSDsCounter, 0 mSdLazyCounter, 639 mSolverCounterSat, 17 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1537 SdHoareTripleChecker+Valid, 2123 SdHoareTripleChecker+Invalid, 656 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 639 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2023-04-02 06:39:03,900 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1537 Valid, 2123 Invalid, 656 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [17 Valid, 639 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2023-04-02 06:39:03,902 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1664 states. [2023-04-02 06:39:04,077 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1664 to 1073. [2023-04-02 06:39:04,079 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1073 states, 1069 states have (on average 1.5360149672591206) internal successors, (1642), 1069 states have internal predecessors, (1642), 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 06:39:04,084 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1073 states to 1073 states and 1645 transitions. [2023-04-02 06:39:04,084 INFO L78 Accepts]: Start accepts. Automaton has 1073 states and 1645 transitions. Word has length 96 [2023-04-02 06:39:04,085 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-02 06:39:04,085 INFO L495 AbstractCegarLoop]: Abstraction has 1073 states and 1645 transitions. [2023-04-02 06:39:04,085 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 10.333333333333334) internal successors, (93), 8 states have internal predecessors, (93), 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 06:39:04,085 INFO L276 IsEmpty]: Start isEmpty. Operand 1073 states and 1645 transitions. [2023-04-02 06:39:04,086 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 97 [2023-04-02 06:39:04,086 INFO L187 NwaCegarLoop]: Found error trace [2023-04-02 06:39:04,086 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-02 06:39:04,086 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-04-02 06:39:04,086 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-02 06:39:04,087 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-02 06:39:04,087 INFO L85 PathProgramCache]: Analyzing trace with hash -1195466840, now seen corresponding path program 1 times [2023-04-02 06:39:04,087 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-02 06:39:04,087 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [206285019] [2023-04-02 06:39:04,087 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 06:39:04,088 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-02 06:39:04,112 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 06:39:04,402 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-02 06:39:04,406 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 06:39:04,412 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 06:39:04,412 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-02 06:39:04,412 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [206285019] [2023-04-02 06:39:04,412 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [206285019] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-02 06:39:04,413 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-02 06:39:04,413 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2023-04-02 06:39:04,413 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1710959561] [2023-04-02 06:39:04,413 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-02 06:39:04,413 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-04-02 06:39:04,413 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-02 06:39:04,414 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-04-02 06:39:04,414 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2023-04-02 06:39:04,414 INFO L87 Difference]: Start difference. First operand 1073 states and 1645 transitions. Second operand has 9 states, 9 states have (on average 10.333333333333334) internal successors, (93), 8 states have internal predecessors, (93), 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 06:39:05,524 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-02 06:39:05,524 INFO L93 Difference]: Finished difference Result 1947 states and 3007 transitions. [2023-04-02 06:39:05,524 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-04-02 06:39:05,524 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 10.333333333333334) internal successors, (93), 8 states have internal predecessors, (93), 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 96 [2023-04-02 06:39:05,525 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-02 06:39:05,531 INFO L225 Difference]: With dead ends: 1947 [2023-04-02 06:39:05,531 INFO L226 Difference]: Without dead ends: 1810 [2023-04-02 06:39:05,532 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=68, Invalid=142, Unknown=0, NotChecked=0, Total=210 [2023-04-02 06:39:05,536 INFO L413 NwaCegarLoop]: 364 mSDtfsCounter, 1600 mSDsluCounter, 2159 mSDsCounter, 0 mSdLazyCounter, 529 mSolverCounterSat, 17 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1600 SdHoareTripleChecker+Valid, 2523 SdHoareTripleChecker+Invalid, 546 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 529 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2023-04-02 06:39:05,536 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1600 Valid, 2523 Invalid, 546 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [17 Valid, 529 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2023-04-02 06:39:05,538 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1810 states. [2023-04-02 06:39:05,756 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1810 to 1224. [2023-04-02 06:39:05,759 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1224 states, 1220 states have (on average 1.5401639344262295) internal successors, (1879), 1220 states have internal predecessors, (1879), 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 06:39:05,762 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1224 states to 1224 states and 1882 transitions. [2023-04-02 06:39:05,763 INFO L78 Accepts]: Start accepts. Automaton has 1224 states and 1882 transitions. Word has length 96 [2023-04-02 06:39:05,763 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-02 06:39:05,763 INFO L495 AbstractCegarLoop]: Abstraction has 1224 states and 1882 transitions. [2023-04-02 06:39:05,763 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 10.333333333333334) internal successors, (93), 8 states have internal predecessors, (93), 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 06:39:05,763 INFO L276 IsEmpty]: Start isEmpty. Operand 1224 states and 1882 transitions. [2023-04-02 06:39:05,764 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 98 [2023-04-02 06:39:05,764 INFO L187 NwaCegarLoop]: Found error trace [2023-04-02 06:39:05,764 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-02 06:39:05,765 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-04-02 06:39:05,765 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-02 06:39:05,765 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-02 06:39:05,765 INFO L85 PathProgramCache]: Analyzing trace with hash 538671320, now seen corresponding path program 1 times [2023-04-02 06:39:05,765 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-02 06:39:05,765 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [544827605] [2023-04-02 06:39:05,765 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 06:39:05,766 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-02 06:39:05,801 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 06:39:06,003 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-02 06:39:06,010 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 06:39:06,026 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 06:39:06,027 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-02 06:39:06,027 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [544827605] [2023-04-02 06:39:06,027 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [544827605] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-02 06:39:06,027 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-02 06:39:06,027 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-04-02 06:39:06,027 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [215612847] [2023-04-02 06:39:06,027 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-02 06:39:06,028 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-04-02 06:39:06,028 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-02 06:39:06,028 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-04-02 06:39:06,028 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2023-04-02 06:39:06,028 INFO L87 Difference]: Start difference. First operand 1224 states and 1882 transitions. Second operand has 6 states, 5 states have (on average 18.8) internal successors, (94), 4 states have internal predecessors, (94), 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 06:39:06,777 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-02 06:39:06,777 INFO L93 Difference]: Finished difference Result 2378 states and 3688 transitions. [2023-04-02 06:39:06,778 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-04-02 06:39:06,778 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 18.8) internal successors, (94), 4 states have internal predecessors, (94), 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 97 [2023-04-02 06:39:06,778 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-02 06:39:06,782 INFO L225 Difference]: With dead ends: 2378 [2023-04-02 06:39:06,783 INFO L226 Difference]: Without dead ends: 1224 [2023-04-02 06:39:06,785 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2023-04-02 06:39:06,785 INFO L413 NwaCegarLoop]: 126 mSDtfsCounter, 595 mSDsluCounter, 48 mSDsCounter, 0 mSdLazyCounter, 349 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 595 SdHoareTripleChecker+Valid, 174 SdHoareTripleChecker+Invalid, 359 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 349 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-04-02 06:39:06,786 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [595 Valid, 174 Invalid, 359 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 349 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-04-02 06:39:06,787 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1224 states. [2023-04-02 06:39:07,012 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1224 to 1224. [2023-04-02 06:39:07,014 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1224 states, 1220 states have (on average 1.527049180327869) internal successors, (1863), 1220 states have internal predecessors, (1863), 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 06:39:07,017 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1224 states to 1224 states and 1866 transitions. [2023-04-02 06:39:07,017 INFO L78 Accepts]: Start accepts. Automaton has 1224 states and 1866 transitions. Word has length 97 [2023-04-02 06:39:07,018 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-02 06:39:07,018 INFO L495 AbstractCegarLoop]: Abstraction has 1224 states and 1866 transitions. [2023-04-02 06:39:07,018 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 18.8) internal successors, (94), 4 states have internal predecessors, (94), 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 06:39:07,018 INFO L276 IsEmpty]: Start isEmpty. Operand 1224 states and 1866 transitions. [2023-04-02 06:39:07,019 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99 [2023-04-02 06:39:07,019 INFO L187 NwaCegarLoop]: Found error trace [2023-04-02 06:39:07,019 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-02 06:39:07,019 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2023-04-02 06:39:07,020 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-02 06:39:07,020 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-02 06:39:07,020 INFO L85 PathProgramCache]: Analyzing trace with hash 183072137, now seen corresponding path program 1 times [2023-04-02 06:39:07,020 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-02 06:39:07,020 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1139364704] [2023-04-02 06:39:07,021 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 06:39:07,021 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-02 06:39:07,045 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 06:39:07,242 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-02 06:39:07,249 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 06:39:07,269 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 06:39:07,269 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-02 06:39:07,269 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1139364704] [2023-04-02 06:39:07,269 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1139364704] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-02 06:39:07,269 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-02 06:39:07,269 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-04-02 06:39:07,269 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1379075572] [2023-04-02 06:39:07,270 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-02 06:39:07,270 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-04-02 06:39:07,270 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-02 06:39:07,271 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-04-02 06:39:07,271 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2023-04-02 06:39:07,271 INFO L87 Difference]: Start difference. First operand 1224 states and 1866 transitions. Second operand has 6 states, 5 states have (on average 19.0) internal successors, (95), 4 states have internal predecessors, (95), 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 06:39:07,987 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-02 06:39:07,988 INFO L93 Difference]: Finished difference Result 2394 states and 3676 transitions. [2023-04-02 06:39:07,988 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-04-02 06:39:07,988 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 19.0) internal successors, (95), 4 states have internal predecessors, (95), 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 98 [2023-04-02 06:39:07,988 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-02 06:39:07,992 INFO L225 Difference]: With dead ends: 2394 [2023-04-02 06:39:07,992 INFO L226 Difference]: Without dead ends: 1224 [2023-04-02 06:39:07,994 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2023-04-02 06:39:07,994 INFO L413 NwaCegarLoop]: 126 mSDtfsCounter, 633 mSDsluCounter, 16 mSDsCounter, 0 mSdLazyCounter, 345 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 633 SdHoareTripleChecker+Valid, 142 SdHoareTripleChecker+Invalid, 355 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 345 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-04-02 06:39:07,995 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [633 Valid, 142 Invalid, 355 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 345 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-04-02 06:39:07,996 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1224 states. [2023-04-02 06:39:08,224 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1224 to 1224. [2023-04-02 06:39:08,226 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1224 states, 1220 states have (on average 1.5139344262295082) internal successors, (1847), 1220 states have internal predecessors, (1847), 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 06:39:08,229 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1224 states to 1224 states and 1850 transitions. [2023-04-02 06:39:08,230 INFO L78 Accepts]: Start accepts. Automaton has 1224 states and 1850 transitions. Word has length 98 [2023-04-02 06:39:08,230 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-02 06:39:08,230 INFO L495 AbstractCegarLoop]: Abstraction has 1224 states and 1850 transitions. [2023-04-02 06:39:08,230 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 19.0) internal successors, (95), 4 states have internal predecessors, (95), 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 06:39:08,230 INFO L276 IsEmpty]: Start isEmpty. Operand 1224 states and 1850 transitions. [2023-04-02 06:39:08,231 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2023-04-02 06:39:08,231 INFO L187 NwaCegarLoop]: Found error trace [2023-04-02 06:39:08,231 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 06:39:08,232 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2023-04-02 06:39:08,232 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-02 06:39:08,232 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-02 06:39:08,232 INFO L85 PathProgramCache]: Analyzing trace with hash 1323006776, now seen corresponding path program 1 times [2023-04-02 06:39:08,232 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-02 06:39:08,232 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [681166342] [2023-04-02 06:39:08,232 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 06:39:08,233 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-02 06:39:08,264 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 06:39:08,513 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-02 06:39:08,519 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 06:39:08,532 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 06:39:08,533 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-02 06:39:08,533 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [681166342] [2023-04-02 06:39:08,533 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [681166342] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-02 06:39:08,533 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-02 06:39:08,533 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-04-02 06:39:08,533 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1228912253] [2023-04-02 06:39:08,533 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-02 06:39:08,534 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-04-02 06:39:08,534 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-02 06:39:08,534 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-04-02 06:39:08,534 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2023-04-02 06:39:08,534 INFO L87 Difference]: Start difference. First operand 1224 states and 1850 transitions. Second operand has 6 states, 5 states have (on average 19.2) internal successors, (96), 4 states have internal predecessors, (96), 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 06:39:09,325 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-02 06:39:09,325 INFO L93 Difference]: Finished difference Result 2390 states and 3640 transitions. [2023-04-02 06:39:09,325 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-04-02 06:39:09,326 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 19.2) internal successors, (96), 4 states have internal predecessors, (96), 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 99 [2023-04-02 06:39:09,326 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-02 06:39:09,330 INFO L225 Difference]: With dead ends: 2390 [2023-04-02 06:39:09,330 INFO L226 Difference]: Without dead ends: 1224 [2023-04-02 06:39:09,332 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2023-04-02 06:39:09,333 INFO L413 NwaCegarLoop]: 126 mSDtfsCounter, 615 mSDsluCounter, 24 mSDsCounter, 0 mSdLazyCounter, 341 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 615 SdHoareTripleChecker+Valid, 150 SdHoareTripleChecker+Invalid, 351 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 341 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-04-02 06:39:09,333 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [615 Valid, 150 Invalid, 351 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 341 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-04-02 06:39:09,334 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1224 states. [2023-04-02 06:39:09,588 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1224 to 1224. [2023-04-02 06:39:09,590 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1224 states, 1220 states have (on average 1.5008196721311475) internal successors, (1831), 1220 states have internal predecessors, (1831), 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 06:39:09,598 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1224 states to 1224 states and 1834 transitions. [2023-04-02 06:39:09,598 INFO L78 Accepts]: Start accepts. Automaton has 1224 states and 1834 transitions. Word has length 99 [2023-04-02 06:39:09,598 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-02 06:39:09,598 INFO L495 AbstractCegarLoop]: Abstraction has 1224 states and 1834 transitions. [2023-04-02 06:39:09,598 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 19.2) internal successors, (96), 4 states have internal predecessors, (96), 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 06:39:09,599 INFO L276 IsEmpty]: Start isEmpty. Operand 1224 states and 1834 transitions. [2023-04-02 06:39:09,599 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 101 [2023-04-02 06:39:09,600 INFO L187 NwaCegarLoop]: Found error trace [2023-04-02 06:39:09,600 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 06:39:09,600 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2023-04-02 06:39:09,600 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-02 06:39:09,600 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-02 06:39:09,600 INFO L85 PathProgramCache]: Analyzing trace with hash 1981420184, now seen corresponding path program 1 times [2023-04-02 06:39:09,601 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-02 06:39:09,601 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1988904026] [2023-04-02 06:39:09,601 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 06:39:09,601 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-02 06:39:09,630 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 06:39:09,859 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-02 06:39:09,865 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 06:39:09,878 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 06:39:09,878 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-02 06:39:09,878 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1988904026] [2023-04-02 06:39:09,878 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1988904026] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-02 06:39:09,878 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-02 06:39:09,878 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-04-02 06:39:09,879 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2088602098] [2023-04-02 06:39:09,879 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-02 06:39:09,879 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-04-02 06:39:09,879 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-02 06:39:09,879 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-04-02 06:39:09,880 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2023-04-02 06:39:09,880 INFO L87 Difference]: Start difference. First operand 1224 states and 1834 transitions. Second operand has 6 states, 5 states have (on average 19.4) internal successors, (97), 4 states have internal predecessors, (97), 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 06:39:10,540 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-02 06:39:10,540 INFO L93 Difference]: Finished difference Result 2386 states and 3604 transitions. [2023-04-02 06:39:10,540 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-04-02 06:39:10,541 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 19.4) internal successors, (97), 4 states have internal predecessors, (97), 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 100 [2023-04-02 06:39:10,541 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-02 06:39:10,544 INFO L225 Difference]: With dead ends: 2386 [2023-04-02 06:39:10,544 INFO L226 Difference]: Without dead ends: 1224 [2023-04-02 06:39:10,547 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2023-04-02 06:39:10,547 INFO L413 NwaCegarLoop]: 126 mSDtfsCounter, 597 mSDsluCounter, 32 mSDsCounter, 0 mSdLazyCounter, 337 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 597 SdHoareTripleChecker+Valid, 158 SdHoareTripleChecker+Invalid, 347 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 337 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-04-02 06:39:10,548 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [597 Valid, 158 Invalid, 347 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 337 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-04-02 06:39:10,549 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1224 states. [2023-04-02 06:39:10,786 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1224 to 1224. [2023-04-02 06:39:10,789 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1224 states, 1220 states have (on average 1.4877049180327868) internal successors, (1815), 1220 states have internal predecessors, (1815), 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 06:39:10,791 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1224 states to 1224 states and 1818 transitions. [2023-04-02 06:39:10,791 INFO L78 Accepts]: Start accepts. Automaton has 1224 states and 1818 transitions. Word has length 100 [2023-04-02 06:39:10,791 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-02 06:39:10,791 INFO L495 AbstractCegarLoop]: Abstraction has 1224 states and 1818 transitions. [2023-04-02 06:39:10,791 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 19.4) internal successors, (97), 4 states have internal predecessors, (97), 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 06:39:10,791 INFO L276 IsEmpty]: Start isEmpty. Operand 1224 states and 1818 transitions. [2023-04-02 06:39:10,792 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 102 [2023-04-02 06:39:10,792 INFO L187 NwaCegarLoop]: Found error trace [2023-04-02 06:39:10,792 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 06:39:10,793 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2023-04-02 06:39:10,793 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-02 06:39:10,793 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-02 06:39:10,793 INFO L85 PathProgramCache]: Analyzing trace with hash 706184681, now seen corresponding path program 1 times [2023-04-02 06:39:10,793 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-02 06:39:10,793 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [715402120] [2023-04-02 06:39:10,794 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 06:39:10,794 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-02 06:39:10,822 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 06:39:11,040 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-02 06:39:11,046 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 06:39:11,065 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 06:39:11,065 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-02 06:39:11,066 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [715402120] [2023-04-02 06:39:11,066 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [715402120] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-02 06:39:11,066 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-02 06:39:11,066 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-04-02 06:39:11,066 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [870573191] [2023-04-02 06:39:11,066 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-02 06:39:11,066 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-04-02 06:39:11,066 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-02 06:39:11,067 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-04-02 06:39:11,067 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2023-04-02 06:39:11,067 INFO L87 Difference]: Start difference. First operand 1224 states and 1818 transitions. Second operand has 6 states, 5 states have (on average 19.6) internal successors, (98), 4 states have internal predecessors, (98), 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 06:39:11,713 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-02 06:39:11,713 INFO L93 Difference]: Finished difference Result 2382 states and 3568 transitions. [2023-04-02 06:39:11,714 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-04-02 06:39:11,714 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 19.6) internal successors, (98), 4 states have internal predecessors, (98), 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 101 [2023-04-02 06:39:11,714 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-02 06:39:11,718 INFO L225 Difference]: With dead ends: 2382 [2023-04-02 06:39:11,718 INFO L226 Difference]: Without dead ends: 1224 [2023-04-02 06:39:11,742 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2023-04-02 06:39:11,743 INFO L413 NwaCegarLoop]: 126 mSDtfsCounter, 579 mSDsluCounter, 40 mSDsCounter, 0 mSdLazyCounter, 333 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 579 SdHoareTripleChecker+Valid, 166 SdHoareTripleChecker+Invalid, 343 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 333 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-04-02 06:39:11,744 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [579 Valid, 166 Invalid, 343 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 333 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-04-02 06:39:11,746 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1224 states. [2023-04-02 06:39:11,954 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1224 to 1224. [2023-04-02 06:39:11,956 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1224 states, 1220 states have (on average 1.4745901639344263) internal successors, (1799), 1220 states have internal predecessors, (1799), 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 06:39:11,958 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1224 states to 1224 states and 1802 transitions. [2023-04-02 06:39:11,958 INFO L78 Accepts]: Start accepts. Automaton has 1224 states and 1802 transitions. Word has length 101 [2023-04-02 06:39:11,958 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-02 06:39:11,958 INFO L495 AbstractCegarLoop]: Abstraction has 1224 states and 1802 transitions. [2023-04-02 06:39:11,958 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 19.6) internal successors, (98), 4 states have internal predecessors, (98), 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 06:39:11,959 INFO L276 IsEmpty]: Start isEmpty. Operand 1224 states and 1802 transitions. [2023-04-02 06:39:11,959 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 103 [2023-04-02 06:39:11,960 INFO L187 NwaCegarLoop]: Found error trace [2023-04-02 06:39:11,960 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 06:39:11,960 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2023-04-02 06:39:11,960 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-02 06:39:11,960 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-02 06:39:11,960 INFO L85 PathProgramCache]: Analyzing trace with hash -1147710425, now seen corresponding path program 1 times [2023-04-02 06:39:11,961 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-02 06:39:11,961 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1463099907] [2023-04-02 06:39:11,961 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 06:39:11,961 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-02 06:39:11,983 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 06:39:12,186 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-02 06:39:12,192 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 06:39:12,204 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 06:39:12,204 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-02 06:39:12,204 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1463099907] [2023-04-02 06:39:12,204 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1463099907] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-02 06:39:12,204 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-02 06:39:12,205 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-04-02 06:39:12,205 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1131980724] [2023-04-02 06:39:12,205 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-02 06:39:12,205 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-04-02 06:39:12,205 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-02 06:39:12,206 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-04-02 06:39:12,206 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2023-04-02 06:39:12,206 INFO L87 Difference]: Start difference. First operand 1224 states and 1802 transitions. Second operand has 6 states, 5 states have (on average 19.8) internal successors, (99), 4 states have internal predecessors, (99), 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 06:39:13,097 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-02 06:39:13,097 INFO L93 Difference]: Finished difference Result 3510 states and 5221 transitions. [2023-04-02 06:39:13,098 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-04-02 06:39:13,098 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 19.8) internal successors, (99), 4 states have internal predecessors, (99), 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 102 [2023-04-02 06:39:13,098 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-02 06:39:13,104 INFO L225 Difference]: With dead ends: 3510 [2023-04-02 06:39:13,104 INFO L226 Difference]: Without dead ends: 2336 [2023-04-02 06:39:13,105 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2023-04-02 06:39:13,106 INFO L413 NwaCegarLoop]: 126 mSDtfsCounter, 908 mSDsluCounter, 85 mSDsCounter, 0 mSdLazyCounter, 399 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 908 SdHoareTripleChecker+Valid, 211 SdHoareTripleChecker+Invalid, 410 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 399 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-04-02 06:39:13,106 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [908 Valid, 211 Invalid, 410 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 399 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-04-02 06:39:13,108 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2336 states. [2023-04-02 06:39:13,603 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2336 to 2334. [2023-04-02 06:39:13,606 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2334 states, 2330 states have (on average 1.48068669527897) internal successors, (3450), 2330 states have internal predecessors, (3450), 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 06:39:13,609 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2334 states to 2334 states and 3453 transitions. [2023-04-02 06:39:13,609 INFO L78 Accepts]: Start accepts. Automaton has 2334 states and 3453 transitions. Word has length 102 [2023-04-02 06:39:13,609 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-02 06:39:13,609 INFO L495 AbstractCegarLoop]: Abstraction has 2334 states and 3453 transitions. [2023-04-02 06:39:13,609 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 19.8) internal successors, (99), 4 states have internal predecessors, (99), 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 06:39:13,609 INFO L276 IsEmpty]: Start isEmpty. Operand 2334 states and 3453 transitions. [2023-04-02 06:39:13,610 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 104 [2023-04-02 06:39:13,611 INFO L187 NwaCegarLoop]: Found error trace [2023-04-02 06:39:13,611 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 06:39:13,611 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2023-04-02 06:39:13,611 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-02 06:39:13,611 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-02 06:39:13,611 INFO L85 PathProgramCache]: Analyzing trace with hash -707709979, now seen corresponding path program 1 times [2023-04-02 06:39:13,612 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-02 06:39:13,612 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [620424531] [2023-04-02 06:39:13,612 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 06:39:13,612 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-02 06:39:13,636 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 06:39:13,970 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-02 06:39:13,975 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 06:39:13,982 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 06:39:13,983 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-02 06:39:13,983 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [620424531] [2023-04-02 06:39:13,985 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [620424531] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-02 06:39:13,985 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-02 06:39:13,985 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-04-02 06:39:13,985 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2084656753] [2023-04-02 06:39:13,985 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-02 06:39:13,986 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-04-02 06:39:13,986 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-02 06:39:13,986 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-04-02 06:39:13,986 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2023-04-02 06:39:13,986 INFO L87 Difference]: Start difference. First operand 2334 states and 3453 transitions. Second operand has 6 states, 6 states have (on average 16.666666666666668) internal successors, (100), 5 states have internal predecessors, (100), 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 06:39:15,204 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-02 06:39:15,204 INFO L93 Difference]: Finished difference Result 2860 states and 4194 transitions. [2023-04-02 06:39:15,204 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-04-02 06:39:15,204 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 16.666666666666668) internal successors, (100), 5 states have internal predecessors, (100), 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 103 [2023-04-02 06:39:15,205 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-02 06:39:15,213 INFO L225 Difference]: With dead ends: 2860 [2023-04-02 06:39:15,213 INFO L226 Difference]: Without dead ends: 2858 [2023-04-02 06:39:15,214 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2023-04-02 06:39:15,214 INFO L413 NwaCegarLoop]: 231 mSDtfsCounter, 196 mSDsluCounter, 679 mSDsCounter, 0 mSdLazyCounter, 263 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 196 SdHoareTripleChecker+Valid, 910 SdHoareTripleChecker+Invalid, 264 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 263 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-04-02 06:39:15,215 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [196 Valid, 910 Invalid, 264 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 263 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-04-02 06:39:15,218 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2858 states. [2023-04-02 06:39:15,672 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2858 to 2334. [2023-04-02 06:39:15,675 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2334 states, 2330 states have (on average 1.4738197424892703) internal successors, (3434), 2330 states have internal predecessors, (3434), 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 06:39:15,677 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2334 states to 2334 states and 3437 transitions. [2023-04-02 06:39:15,677 INFO L78 Accepts]: Start accepts. Automaton has 2334 states and 3437 transitions. Word has length 103 [2023-04-02 06:39:15,678 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-02 06:39:15,678 INFO L495 AbstractCegarLoop]: Abstraction has 2334 states and 3437 transitions. [2023-04-02 06:39:15,678 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 16.666666666666668) internal successors, (100), 5 states have internal predecessors, (100), 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 06:39:15,678 INFO L276 IsEmpty]: Start isEmpty. Operand 2334 states and 3437 transitions. [2023-04-02 06:39:15,679 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 105 [2023-04-02 06:39:15,679 INFO L187 NwaCegarLoop]: Found error trace [2023-04-02 06:39:15,679 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 06:39:15,680 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2023-04-02 06:39:15,680 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-02 06:39:15,680 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-02 06:39:15,680 INFO L85 PathProgramCache]: Analyzing trace with hash 710997304, now seen corresponding path program 1 times [2023-04-02 06:39:15,680 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-02 06:39:15,680 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [366707135] [2023-04-02 06:39:15,680 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 06:39:15,681 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-02 06:39:15,714 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 06:39:16,160 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-02 06:39:16,166 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 06:39:16,182 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 06:39:16,183 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-02 06:39:16,183 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [366707135] [2023-04-02 06:39:16,183 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [366707135] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-02 06:39:16,183 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-02 06:39:16,183 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2023-04-02 06:39:16,183 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1269439064] [2023-04-02 06:39:16,183 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-02 06:39:16,184 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2023-04-02 06:39:16,184 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-02 06:39:16,184 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2023-04-02 06:39:16,184 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=91, Unknown=0, NotChecked=0, Total=110 [2023-04-02 06:39:16,185 INFO L87 Difference]: Start difference. First operand 2334 states and 3437 transitions. Second operand has 11 states, 10 states have (on average 10.1) internal successors, (101), 9 states have internal predecessors, (101), 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 06:39:18,467 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-02 06:39:18,468 INFO L93 Difference]: Finished difference Result 6751 states and 9967 transitions. [2023-04-02 06:39:18,468 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2023-04-02 06:39:18,468 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 10 states have (on average 10.1) internal successors, (101), 9 states have internal predecessors, (101), 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 104 [2023-04-02 06:39:18,469 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-02 06:39:18,483 INFO L225 Difference]: With dead ends: 6751 [2023-04-02 06:39:18,484 INFO L226 Difference]: Without dead ends: 4580 [2023-04-02 06:39:18,487 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 67 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=141, Invalid=411, Unknown=0, NotChecked=0, Total=552 [2023-04-02 06:39:18,488 INFO L413 NwaCegarLoop]: 121 mSDtfsCounter, 1909 mSDsluCounter, 326 mSDsCounter, 0 mSdLazyCounter, 638 mSolverCounterSat, 18 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1909 SdHoareTripleChecker+Valid, 447 SdHoareTripleChecker+Invalid, 656 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 18 IncrementalHoareTripleChecker+Valid, 638 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2023-04-02 06:39:18,488 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1909 Valid, 447 Invalid, 656 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [18 Valid, 638 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2023-04-02 06:39:18,493 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4580 states. [2023-04-02 06:39:19,135 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4580 to 2334. [2023-04-02 06:39:19,137 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2334 states, 2330 states have (on average 1.471244635193133) internal successors, (3428), 2330 states have internal predecessors, (3428), 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 06:39:19,140 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2334 states to 2334 states and 3431 transitions. [2023-04-02 06:39:19,140 INFO L78 Accepts]: Start accepts. Automaton has 2334 states and 3431 transitions. Word has length 104 [2023-04-02 06:39:19,140 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-02 06:39:19,140 INFO L495 AbstractCegarLoop]: Abstraction has 2334 states and 3431 transitions. [2023-04-02 06:39:19,140 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 10 states have (on average 10.1) internal successors, (101), 9 states have internal predecessors, (101), 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 06:39:19,141 INFO L276 IsEmpty]: Start isEmpty. Operand 2334 states and 3431 transitions. [2023-04-02 06:39:19,142 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 105 [2023-04-02 06:39:19,142 INFO L187 NwaCegarLoop]: Found error trace [2023-04-02 06:39:19,142 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 06:39:19,142 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2023-04-02 06:39:19,142 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-02 06:39:19,143 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-02 06:39:19,143 INFO L85 PathProgramCache]: Analyzing trace with hash 1358961341, now seen corresponding path program 1 times [2023-04-02 06:39:19,143 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-02 06:39:19,143 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1619137185] [2023-04-02 06:39:19,143 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 06:39:19,143 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-02 06:39:19,173 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 06:39:19,583 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-02 06:39:19,588 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 06:39:19,607 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 06:39:19,607 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-02 06:39:19,608 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1619137185] [2023-04-02 06:39:19,608 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1619137185] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-02 06:39:19,608 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-02 06:39:19,608 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2023-04-02 06:39:19,608 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1835146822] [2023-04-02 06:39:19,608 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-02 06:39:19,608 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2023-04-02 06:39:19,608 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-02 06:39:19,609 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2023-04-02 06:39:19,609 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=91, Unknown=0, NotChecked=0, Total=110 [2023-04-02 06:39:19,609 INFO L87 Difference]: Start difference. First operand 2334 states and 3431 transitions. Second operand has 11 states, 10 states have (on average 10.1) internal successors, (101), 9 states have internal predecessors, (101), 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 06:39:21,515 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-02 06:39:21,515 INFO L93 Difference]: Finished difference Result 5692 states and 8378 transitions. [2023-04-02 06:39:21,516 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2023-04-02 06:39:21,516 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 10 states have (on average 10.1) internal successors, (101), 9 states have internal predecessors, (101), 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 104 [2023-04-02 06:39:21,516 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-02 06:39:21,523 INFO L225 Difference]: With dead ends: 5692 [2023-04-02 06:39:21,523 INFO L226 Difference]: Without dead ends: 3506 [2023-04-02 06:39:21,527 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 67 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=141, Invalid=411, Unknown=0, NotChecked=0, Total=552 [2023-04-02 06:39:21,527 INFO L413 NwaCegarLoop]: 121 mSDtfsCounter, 1956 mSDsluCounter, 320 mSDsCounter, 0 mSdLazyCounter, 633 mSolverCounterSat, 18 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1956 SdHoareTripleChecker+Valid, 441 SdHoareTripleChecker+Invalid, 651 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 18 IncrementalHoareTripleChecker+Valid, 633 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2023-04-02 06:39:21,528 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1956 Valid, 441 Invalid, 651 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [18 Valid, 633 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2023-04-02 06:39:21,530 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3506 states. [2023-04-02 06:39:22,156 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3506 to 2334. [2023-04-02 06:39:22,159 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2334 states, 2330 states have (on average 1.4699570815450644) internal successors, (3425), 2330 states have internal predecessors, (3425), 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 06:39:22,162 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2334 states to 2334 states and 3428 transitions. [2023-04-02 06:39:22,163 INFO L78 Accepts]: Start accepts. Automaton has 2334 states and 3428 transitions. Word has length 104 [2023-04-02 06:39:22,163 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-02 06:39:22,163 INFO L495 AbstractCegarLoop]: Abstraction has 2334 states and 3428 transitions. [2023-04-02 06:39:22,163 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 10 states have (on average 10.1) internal successors, (101), 9 states have internal predecessors, (101), 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 06:39:22,163 INFO L276 IsEmpty]: Start isEmpty. Operand 2334 states and 3428 transitions. [2023-04-02 06:39:22,164 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 105 [2023-04-02 06:39:22,164 INFO L187 NwaCegarLoop]: Found error trace [2023-04-02 06:39:22,164 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 06:39:22,164 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2023-04-02 06:39:22,165 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-02 06:39:22,165 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-02 06:39:22,165 INFO L85 PathProgramCache]: Analyzing trace with hash 666482574, now seen corresponding path program 1 times [2023-04-02 06:39:22,165 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-02 06:39:22,165 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [260997074] [2023-04-02 06:39:22,165 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 06:39:22,166 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-02 06:39:22,192 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 06:39:22,554 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-02 06:39:22,560 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 06:39:22,573 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 06:39:22,573 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-02 06:39:22,573 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [260997074] [2023-04-02 06:39:22,573 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [260997074] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-02 06:39:22,573 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-02 06:39:22,573 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2023-04-02 06:39:22,573 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [863693147] [2023-04-02 06:39:22,573 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-02 06:39:22,575 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-04-02 06:39:22,575 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-02 06:39:22,575 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-04-02 06:39:22,576 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2023-04-02 06:39:22,576 INFO L87 Difference]: Start difference. First operand 2334 states and 3428 transitions. Second operand has 10 states, 9 states have (on average 11.222222222222221) internal successors, (101), 8 states have internal predecessors, (101), 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 06:39:24,603 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-02 06:39:24,603 INFO L93 Difference]: Finished difference Result 6500 states and 9593 transitions. [2023-04-02 06:39:24,603 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-04-02 06:39:24,603 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 11.222222222222221) internal successors, (101), 8 states have internal predecessors, (101), 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 104 [2023-04-02 06:39:24,604 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-02 06:39:24,612 INFO L225 Difference]: With dead ends: 6500 [2023-04-02 06:39:24,612 INFO L226 Difference]: Without dead ends: 4375 [2023-04-02 06:39:24,615 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=100, Invalid=242, Unknown=0, NotChecked=0, Total=342 [2023-04-02 06:39:24,616 INFO L413 NwaCegarLoop]: 121 mSDtfsCounter, 1318 mSDsluCounter, 269 mSDsCounter, 0 mSdLazyCounter, 534 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1318 SdHoareTripleChecker+Valid, 390 SdHoareTripleChecker+Invalid, 547 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 534 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-04-02 06:39:24,616 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1318 Valid, 390 Invalid, 547 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 534 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-04-02 06:39:24,619 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4375 states. [2023-04-02 06:39:25,447 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4375 to 2334. [2023-04-02 06:39:25,450 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2334 states, 2330 states have (on average 1.4695278969957082) internal successors, (3424), 2330 states have internal predecessors, (3424), 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 06:39:25,454 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2334 states to 2334 states and 3427 transitions. [2023-04-02 06:39:25,454 INFO L78 Accepts]: Start accepts. Automaton has 2334 states and 3427 transitions. Word has length 104 [2023-04-02 06:39:25,454 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-02 06:39:25,454 INFO L495 AbstractCegarLoop]: Abstraction has 2334 states and 3427 transitions. [2023-04-02 06:39:25,455 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 9 states have (on average 11.222222222222221) internal successors, (101), 8 states have internal predecessors, (101), 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 06:39:25,455 INFO L276 IsEmpty]: Start isEmpty. Operand 2334 states and 3427 transitions. [2023-04-02 06:39:25,456 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 106 [2023-04-02 06:39:25,456 INFO L187 NwaCegarLoop]: Found error trace [2023-04-02 06:39:25,456 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 06:39:25,456 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2023-04-02 06:39:25,457 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-02 06:39:25,457 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-02 06:39:25,457 INFO L85 PathProgramCache]: Analyzing trace with hash -2039201714, now seen corresponding path program 1 times [2023-04-02 06:39:25,457 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-02 06:39:25,458 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [973126704] [2023-04-02 06:39:25,458 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 06:39:25,458 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-02 06:39:25,487 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 06:39:25,955 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-02 06:39:25,962 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 06:39:25,976 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 06:39:25,977 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-02 06:39:25,977 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [973126704] [2023-04-02 06:39:25,977 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [973126704] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-02 06:39:25,977 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-02 06:39:25,977 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2023-04-02 06:39:25,977 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [430632847] [2023-04-02 06:39:25,977 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-02 06:39:25,977 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2023-04-02 06:39:25,978 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-02 06:39:25,978 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2023-04-02 06:39:25,978 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2023-04-02 06:39:25,978 INFO L87 Difference]: Start difference. First operand 2334 states and 3427 transitions. Second operand has 11 states, 10 states have (on average 10.2) internal successors, (102), 9 states have internal predecessors, (102), 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 06:39:28,248 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-02 06:39:28,248 INFO L93 Difference]: Finished difference Result 6631 states and 9765 transitions. [2023-04-02 06:39:28,249 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2023-04-02 06:39:28,249 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 10 states have (on average 10.2) internal successors, (102), 9 states have internal predecessors, (102), 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 105 [2023-04-02 06:39:28,249 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-02 06:39:28,257 INFO L225 Difference]: With dead ends: 6631 [2023-04-02 06:39:28,257 INFO L226 Difference]: Without dead ends: 4535 [2023-04-02 06:39:28,260 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 83 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=145, Invalid=407, Unknown=0, NotChecked=0, Total=552 [2023-04-02 06:39:28,260 INFO L413 NwaCegarLoop]: 121 mSDtfsCounter, 1105 mSDsluCounter, 337 mSDsCounter, 0 mSdLazyCounter, 630 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1105 SdHoareTripleChecker+Valid, 458 SdHoareTripleChecker+Invalid, 645 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 630 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2023-04-02 06:39:28,261 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1105 Valid, 458 Invalid, 645 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 630 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2023-04-02 06:39:28,264 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4535 states. [2023-04-02 06:39:29,025 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4535 to 2334. [2023-04-02 06:39:29,028 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2334 states, 2330 states have (on average 1.4648068669527896) internal successors, (3413), 2330 states have internal predecessors, (3413), 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 06:39:29,031 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2334 states to 2334 states and 3416 transitions. [2023-04-02 06:39:29,031 INFO L78 Accepts]: Start accepts. Automaton has 2334 states and 3416 transitions. Word has length 105 [2023-04-02 06:39:29,032 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-02 06:39:29,032 INFO L495 AbstractCegarLoop]: Abstraction has 2334 states and 3416 transitions. [2023-04-02 06:39:29,032 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 10 states have (on average 10.2) internal successors, (102), 9 states have internal predecessors, (102), 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 06:39:29,032 INFO L276 IsEmpty]: Start isEmpty. Operand 2334 states and 3416 transitions. [2023-04-02 06:39:29,035 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 107 [2023-04-02 06:39:29,035 INFO L187 NwaCegarLoop]: Found error trace [2023-04-02 06:39:29,035 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 06:39:29,035 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2023-04-02 06:39:29,035 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-02 06:39:29,035 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-02 06:39:29,035 INFO L85 PathProgramCache]: Analyzing trace with hash -1802025570, now seen corresponding path program 1 times [2023-04-02 06:39:29,036 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-02 06:39:29,036 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1576366809] [2023-04-02 06:39:29,036 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 06:39:29,036 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-02 06:39:29,070 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 06:39:29,450 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-02 06:39:29,456 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 06:39:29,471 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 06:39:29,471 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-02 06:39:29,471 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1576366809] [2023-04-02 06:39:29,471 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1576366809] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-02 06:39:29,471 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-02 06:39:29,471 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2023-04-02 06:39:29,471 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [322102360] [2023-04-02 06:39:29,471 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-02 06:39:29,473 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2023-04-02 06:39:29,473 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-02 06:39:29,474 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2023-04-02 06:39:29,474 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2023-04-02 06:39:29,474 INFO L87 Difference]: Start difference. First operand 2334 states and 3416 transitions. Second operand has 11 states, 10 states have (on average 10.3) internal successors, (103), 9 states have internal predecessors, (103), 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 06:39:31,813 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-02 06:39:31,814 INFO L93 Difference]: Finished difference Result 6531 states and 9594 transitions. [2023-04-02 06:39:31,814 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2023-04-02 06:39:31,814 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 10 states have (on average 10.3) internal successors, (103), 9 states have internal predecessors, (103), 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 106 [2023-04-02 06:39:31,815 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-02 06:39:31,823 INFO L225 Difference]: With dead ends: 6531 [2023-04-02 06:39:31,824 INFO L226 Difference]: Without dead ends: 4490 [2023-04-02 06:39:31,829 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 81 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=145, Invalid=407, Unknown=0, NotChecked=0, Total=552 [2023-04-02 06:39:31,829 INFO L413 NwaCegarLoop]: 127 mSDtfsCounter, 1319 mSDsluCounter, 354 mSDsCounter, 0 mSdLazyCounter, 666 mSolverCounterSat, 18 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1319 SdHoareTripleChecker+Valid, 481 SdHoareTripleChecker+Invalid, 684 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 18 IncrementalHoareTripleChecker+Valid, 666 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2023-04-02 06:39:31,830 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1319 Valid, 481 Invalid, 684 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [18 Valid, 666 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2023-04-02 06:39:31,834 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4490 states. [2023-04-02 06:39:32,712 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4490 to 2334. [2023-04-02 06:39:32,714 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2334 states, 2330 states have (on average 1.4592274678111588) internal successors, (3400), 2330 states have internal predecessors, (3400), 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 06:39:32,716 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2334 states to 2334 states and 3403 transitions. [2023-04-02 06:39:32,717 INFO L78 Accepts]: Start accepts. Automaton has 2334 states and 3403 transitions. Word has length 106 [2023-04-02 06:39:32,717 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-02 06:39:32,717 INFO L495 AbstractCegarLoop]: Abstraction has 2334 states and 3403 transitions. [2023-04-02 06:39:32,717 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 10 states have (on average 10.3) internal successors, (103), 9 states have internal predecessors, (103), 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 06:39:32,717 INFO L276 IsEmpty]: Start isEmpty. Operand 2334 states and 3403 transitions. [2023-04-02 06:39:32,718 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 108 [2023-04-02 06:39:32,718 INFO L187 NwaCegarLoop]: Found error trace [2023-04-02 06:39:32,718 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 06:39:32,718 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2023-04-02 06:39:32,718 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-02 06:39:32,719 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-02 06:39:32,719 INFO L85 PathProgramCache]: Analyzing trace with hash 1157707966, now seen corresponding path program 1 times [2023-04-02 06:39:32,719 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-02 06:39:32,719 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1704243314] [2023-04-02 06:39:32,719 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 06:39:32,719 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-02 06:39:32,760 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 06:39:33,471 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-02 06:39:33,477 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 06:39:33,493 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 06:39:33,493 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-02 06:39:33,493 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1704243314] [2023-04-02 06:39:33,494 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1704243314] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-02 06:39:33,494 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-02 06:39:33,494 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2023-04-02 06:39:33,494 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1151834475] [2023-04-02 06:39:33,494 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-02 06:39:33,494 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2023-04-02 06:39:33,494 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-02 06:39:33,495 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2023-04-02 06:39:33,495 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=154, Unknown=0, NotChecked=0, Total=182 [2023-04-02 06:39:33,495 INFO L87 Difference]: Start difference. First operand 2334 states and 3403 transitions. Second operand has 14 states, 13 states have (on average 8.0) internal successors, (104), 12 states have internal predecessors, (104), 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 06:39:56,073 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-02 06:39:56,073 INFO L93 Difference]: Finished difference Result 47367 states and 69549 transitions. [2023-04-02 06:39:56,074 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 43 states. [2023-04-02 06:39:56,074 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 13 states have (on average 8.0) internal successors, (104), 12 states have internal predecessors, (104), 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 107 [2023-04-02 06:39:56,074 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-02 06:39:56,161 INFO L225 Difference]: With dead ends: 47367 [2023-04-02 06:39:56,161 INFO L226 Difference]: Without dead ends: 45226 [2023-04-02 06:39:56,180 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 52 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 890 ImplicationChecksByTransitivity, 2.0s TimeCoverageRelationStatistics Valid=653, Invalid=2209, Unknown=0, NotChecked=0, Total=2862 [2023-04-02 06:39:56,181 INFO L413 NwaCegarLoop]: 228 mSDtfsCounter, 4955 mSDsluCounter, 1444 mSDsCounter, 0 mSdLazyCounter, 1943 mSolverCounterSat, 72 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4955 SdHoareTripleChecker+Valid, 1672 SdHoareTripleChecker+Invalid, 2015 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 72 IncrementalHoareTripleChecker+Valid, 1943 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.7s IncrementalHoareTripleChecker+Time [2023-04-02 06:39:56,181 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4955 Valid, 1672 Invalid, 2015 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [72 Valid, 1943 Invalid, 0 Unknown, 0 Unchecked, 1.7s Time] [2023-04-02 06:39:56,223 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 45226 states. [2023-04-02 06:39:57,746 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 45226 to 2352. [2023-04-02 06:39:57,749 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2352 states, 2348 states have (on average 1.4544293015332197) internal successors, (3415), 2348 states have internal predecessors, (3415), 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 06:39:57,751 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2352 states to 2352 states and 3418 transitions. [2023-04-02 06:39:57,751 INFO L78 Accepts]: Start accepts. Automaton has 2352 states and 3418 transitions. Word has length 107 [2023-04-02 06:39:57,751 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-02 06:39:57,751 INFO L495 AbstractCegarLoop]: Abstraction has 2352 states and 3418 transitions. [2023-04-02 06:39:57,751 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 13 states have (on average 8.0) internal successors, (104), 12 states have internal predecessors, (104), 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 06:39:57,751 INFO L276 IsEmpty]: Start isEmpty. Operand 2352 states and 3418 transitions. [2023-04-02 06:39:57,752 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 109 [2023-04-02 06:39:57,752 INFO L187 NwaCegarLoop]: Found error trace [2023-04-02 06:39:57,753 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 06:39:57,753 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2023-04-02 06:39:57,753 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-02 06:39:57,753 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-02 06:39:57,753 INFO L85 PathProgramCache]: Analyzing trace with hash 1227216483, now seen corresponding path program 1 times [2023-04-02 06:39:57,753 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-02 06:39:57,754 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [170789607] [2023-04-02 06:39:57,754 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 06:39:57,754 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-02 06:39:57,795 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 06:39:58,528 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-02 06:39:58,532 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 06:39:58,537 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 06:39:58,538 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-02 06:39:58,538 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [170789607] [2023-04-02 06:39:58,538 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [170789607] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-02 06:39:58,538 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-02 06:39:58,538 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2023-04-02 06:39:58,538 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1916328692] [2023-04-02 06:39:58,538 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-02 06:39:58,538 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2023-04-02 06:39:58,539 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-02 06:39:58,539 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2023-04-02 06:39:58,539 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=154, Unknown=0, NotChecked=0, Total=182 [2023-04-02 06:39:58,539 INFO L87 Difference]: Start difference. First operand 2352 states and 3418 transitions. Second operand has 14 states, 14 states have (on average 7.5) internal successors, (105), 13 states have internal predecessors, (105), 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 06:40:03,641 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-02 06:40:03,641 INFO L93 Difference]: Finished difference Result 5682 states and 8318 transitions. [2023-04-02 06:40:03,642 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2023-04-02 06:40:03,642 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 7.5) internal successors, (105), 13 states have internal predecessors, (105), 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 108 [2023-04-02 06:40:03,642 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-02 06:40:03,650 INFO L225 Difference]: With dead ends: 5682 [2023-04-02 06:40:03,650 INFO L226 Difference]: Without dead ends: 5052 [2023-04-02 06:40:03,652 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 80 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=165, Invalid=537, Unknown=0, NotChecked=0, Total=702 [2023-04-02 06:40:03,653 INFO L413 NwaCegarLoop]: 560 mSDtfsCounter, 1428 mSDsluCounter, 2459 mSDsCounter, 0 mSdLazyCounter, 1081 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1428 SdHoareTripleChecker+Valid, 3019 SdHoareTripleChecker+Invalid, 1094 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 1081 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2023-04-02 06:40:03,653 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1428 Valid, 3019 Invalid, 1094 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 1081 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2023-04-02 06:40:03,656 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5052 states. [2023-04-02 06:40:05,087 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5052 to 2291. [2023-04-02 06:40:05,089 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2291 states, 2287 states have (on average 1.455181460428509) internal successors, (3328), 2287 states have internal predecessors, (3328), 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 06:40:05,091 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2291 states to 2291 states and 3331 transitions. [2023-04-02 06:40:05,091 INFO L78 Accepts]: Start accepts. Automaton has 2291 states and 3331 transitions. Word has length 108 [2023-04-02 06:40:05,091 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-02 06:40:05,091 INFO L495 AbstractCegarLoop]: Abstraction has 2291 states and 3331 transitions. [2023-04-02 06:40:05,091 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 7.5) internal successors, (105), 13 states have internal predecessors, (105), 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 06:40:05,091 INFO L276 IsEmpty]: Start isEmpty. Operand 2291 states and 3331 transitions. [2023-04-02 06:40:05,092 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 109 [2023-04-02 06:40:05,092 INFO L187 NwaCegarLoop]: Found error trace [2023-04-02 06:40:05,092 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 06:40:05,092 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2023-04-02 06:40:05,092 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-02 06:40:05,092 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-02 06:40:05,092 INFO L85 PathProgramCache]: Analyzing trace with hash -1054355260, now seen corresponding path program 1 times [2023-04-02 06:40:05,092 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-02 06:40:05,093 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2041866160] [2023-04-02 06:40:05,093 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 06:40:05,093 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-02 06:40:05,143 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 06:40:07,999 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-02 06:40:08,003 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 06:40:08,009 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 06:40:08,009 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-02 06:40:08,009 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2041866160] [2023-04-02 06:40:08,009 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2041866160] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-02 06:40:08,009 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-02 06:40:08,009 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [39] imperfect sequences [] total 39 [2023-04-02 06:40:08,010 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1468996526] [2023-04-02 06:40:08,010 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-02 06:40:08,010 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 39 states [2023-04-02 06:40:08,010 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-02 06:40:08,011 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 39 interpolants. [2023-04-02 06:40:08,011 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=104, Invalid=1378, Unknown=0, NotChecked=0, Total=1482 [2023-04-02 06:40:08,011 INFO L87 Difference]: Start difference. First operand 2291 states and 3331 transitions. Second operand has 39 states, 39 states have (on average 2.6923076923076925) internal successors, (105), 38 states have internal predecessors, (105), 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 06:40:25,005 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-02 06:40:25,005 INFO L93 Difference]: Finished difference Result 7317 states and 10722 transitions. [2023-04-02 06:40:25,006 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 43 states. [2023-04-02 06:40:25,006 INFO L78 Accepts]: Start accepts. Automaton has has 39 states, 39 states have (on average 2.6923076923076925) internal successors, (105), 38 states have internal predecessors, (105), 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 108 [2023-04-02 06:40:25,006 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-02 06:40:25,013 INFO L225 Difference]: With dead ends: 7317 [2023-04-02 06:40:25,014 INFO L226 Difference]: Without dead ends: 6773 [2023-04-02 06:40:25,016 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 76 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 73 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 816 ImplicationChecksByTransitivity, 6.2s TimeCoverageRelationStatistics Valid=799, Invalid=4751, Unknown=0, NotChecked=0, Total=5550 [2023-04-02 06:40:25,016 INFO L413 NwaCegarLoop]: 779 mSDtfsCounter, 2038 mSDsluCounter, 17855 mSDsCounter, 0 mSdLazyCounter, 13823 mSolverCounterSat, 42 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2038 SdHoareTripleChecker+Valid, 18634 SdHoareTripleChecker+Invalid, 13865 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 42 IncrementalHoareTripleChecker+Valid, 13823 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7.7s IncrementalHoareTripleChecker+Time [2023-04-02 06:40:25,016 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2038 Valid, 18634 Invalid, 13865 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [42 Valid, 13823 Invalid, 0 Unknown, 0 Unchecked, 7.7s Time] [2023-04-02 06:40:25,020 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6773 states. [2023-04-02 06:40:26,439 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6773 to 2320. [2023-04-02 06:40:26,442 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2320 states, 2316 states have (on average 1.4525043177892918) internal successors, (3364), 2316 states have internal predecessors, (3364), 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 06:40:26,444 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2320 states to 2320 states and 3367 transitions. [2023-04-02 06:40:26,445 INFO L78 Accepts]: Start accepts. Automaton has 2320 states and 3367 transitions. Word has length 108 [2023-04-02 06:40:26,445 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-02 06:40:26,445 INFO L495 AbstractCegarLoop]: Abstraction has 2320 states and 3367 transitions. [2023-04-02 06:40:26,445 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 39 states, 39 states have (on average 2.6923076923076925) internal successors, (105), 38 states have internal predecessors, (105), 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 06:40:26,445 INFO L276 IsEmpty]: Start isEmpty. Operand 2320 states and 3367 transitions. [2023-04-02 06:40:26,446 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 109 [2023-04-02 06:40:26,446 INFO L187 NwaCegarLoop]: Found error trace [2023-04-02 06:40:26,446 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 06:40:26,446 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2023-04-02 06:40:26,446 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-02 06:40:26,447 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-02 06:40:26,447 INFO L85 PathProgramCache]: Analyzing trace with hash -126821341, now seen corresponding path program 1 times [2023-04-02 06:40:26,447 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-02 06:40:26,447 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1324418662] [2023-04-02 06:40:26,447 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 06:40:26,447 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-02 06:40:26,481 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 06:40:27,207 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-02 06:40:27,211 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 06:40:27,216 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 06:40:27,216 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-02 06:40:27,217 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1324418662] [2023-04-02 06:40:27,218 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1324418662] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-02 06:40:27,218 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-02 06:40:27,218 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2023-04-02 06:40:27,218 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [573081398] [2023-04-02 06:40:27,218 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-02 06:40:27,218 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2023-04-02 06:40:27,218 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-02 06:40:27,219 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2023-04-02 06:40:27,219 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=154, Unknown=0, NotChecked=0, Total=182 [2023-04-02 06:40:27,219 INFO L87 Difference]: Start difference. First operand 2320 states and 3367 transitions. Second operand has 14 states, 14 states have (on average 7.5) internal successors, (105), 13 states have internal predecessors, (105), 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 06:40:34,953 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-02 06:40:34,953 INFO L93 Difference]: Finished difference Result 9022 states and 13270 transitions. [2023-04-02 06:40:34,954 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2023-04-02 06:40:34,954 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 7.5) internal successors, (105), 13 states have internal predecessors, (105), 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 108 [2023-04-02 06:40:34,954 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-02 06:40:34,962 INFO L225 Difference]: With dead ends: 9022 [2023-04-02 06:40:34,962 INFO L226 Difference]: Without dead ends: 8476 [2023-04-02 06:40:34,963 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 80 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=165, Invalid=537, Unknown=0, NotChecked=0, Total=702 [2023-04-02 06:40:34,963 INFO L413 NwaCegarLoop]: 383 mSDtfsCounter, 1389 mSDsluCounter, 1892 mSDsCounter, 0 mSdLazyCounter, 881 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1389 SdHoareTripleChecker+Valid, 2275 SdHoareTripleChecker+Invalid, 894 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 881 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2023-04-02 06:40:34,964 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1389 Valid, 2275 Invalid, 894 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 881 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2023-04-02 06:40:34,968 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8476 states. [2023-04-02 06:40:36,555 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8476 to 2316. [2023-04-02 06:40:36,558 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2316 states, 2312 states have (on average 1.4485294117647058) internal successors, (3349), 2312 states have internal predecessors, (3349), 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 06:40:36,560 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2316 states to 2316 states and 3352 transitions. [2023-04-02 06:40:36,560 INFO L78 Accepts]: Start accepts. Automaton has 2316 states and 3352 transitions. Word has length 108 [2023-04-02 06:40:36,560 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-02 06:40:36,560 INFO L495 AbstractCegarLoop]: Abstraction has 2316 states and 3352 transitions. [2023-04-02 06:40:36,561 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 7.5) internal successors, (105), 13 states have internal predecessors, (105), 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 06:40:36,561 INFO L276 IsEmpty]: Start isEmpty. Operand 2316 states and 3352 transitions. [2023-04-02 06:40:36,561 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 109 [2023-04-02 06:40:36,561 INFO L187 NwaCegarLoop]: Found error trace [2023-04-02 06:40:36,562 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 06:40:36,562 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2023-04-02 06:40:36,562 INFO L420 AbstractCegarLoop]: === Iteration 26 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-02 06:40:36,562 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-02 06:40:36,562 INFO L85 PathProgramCache]: Analyzing trace with hash -676885148, now seen corresponding path program 1 times [2023-04-02 06:40:36,562 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-02 06:40:36,562 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [685173426] [2023-04-02 06:40:36,563 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 06:40:36,563 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-02 06:40:36,599 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 06:40:37,289 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-02 06:40:37,294 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 06:40:37,299 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 06:40:37,299 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-02 06:40:37,299 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [685173426] [2023-04-02 06:40:37,299 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [685173426] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-02 06:40:37,299 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-02 06:40:37,299 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2023-04-02 06:40:37,299 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1720879960] [2023-04-02 06:40:37,299 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-02 06:40:37,300 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2023-04-02 06:40:37,300 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-02 06:40:37,300 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2023-04-02 06:40:37,301 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=154, Unknown=0, NotChecked=0, Total=182 [2023-04-02 06:40:37,302 INFO L87 Difference]: Start difference. First operand 2316 states and 3352 transitions. Second operand has 14 states, 14 states have (on average 7.5) internal successors, (105), 13 states have internal predecessors, (105), 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 06:40:46,351 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-02 06:40:46,351 INFO L93 Difference]: Finished difference Result 9248 states and 13556 transitions. [2023-04-02 06:40:46,352 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2023-04-02 06:40:46,352 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 7.5) internal successors, (105), 13 states have internal predecessors, (105), 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 108 [2023-04-02 06:40:46,352 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-02 06:40:46,361 INFO L225 Difference]: With dead ends: 9248 [2023-04-02 06:40:46,361 INFO L226 Difference]: Without dead ends: 8647 [2023-04-02 06:40:46,363 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 80 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=165, Invalid=537, Unknown=0, NotChecked=0, Total=702 [2023-04-02 06:40:46,363 INFO L413 NwaCegarLoop]: 535 mSDtfsCounter, 1224 mSDsluCounter, 2147 mSDsCounter, 0 mSdLazyCounter, 1026 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1224 SdHoareTripleChecker+Valid, 2682 SdHoareTripleChecker+Invalid, 1039 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 1026 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2023-04-02 06:40:46,363 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1224 Valid, 2682 Invalid, 1039 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 1026 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2023-04-02 06:40:46,368 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8647 states. [2023-04-02 06:40:48,202 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8647 to 2274. [2023-04-02 06:40:48,209 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2274 states, 2270 states have (on average 1.449339207048458) internal successors, (3290), 2270 states have internal predecessors, (3290), 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 06:40:48,213 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2274 states to 2274 states and 3293 transitions. [2023-04-02 06:40:48,214 INFO L78 Accepts]: Start accepts. Automaton has 2274 states and 3293 transitions. Word has length 108 [2023-04-02 06:40:48,215 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-02 06:40:48,215 INFO L495 AbstractCegarLoop]: Abstraction has 2274 states and 3293 transitions. [2023-04-02 06:40:48,215 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 7.5) internal successors, (105), 13 states have internal predecessors, (105), 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 06:40:48,215 INFO L276 IsEmpty]: Start isEmpty. Operand 2274 states and 3293 transitions. [2023-04-02 06:40:48,216 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 109 [2023-04-02 06:40:48,216 INFO L187 NwaCegarLoop]: Found error trace [2023-04-02 06:40:48,216 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 06:40:48,216 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2023-04-02 06:40:48,216 INFO L420 AbstractCegarLoop]: === Iteration 27 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-02 06:40:48,217 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-02 06:40:48,217 INFO L85 PathProgramCache]: Analyzing trace with hash 1894111202, now seen corresponding path program 1 times [2023-04-02 06:40:48,217 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-02 06:40:48,217 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1351776986] [2023-04-02 06:40:48,217 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 06:40:48,217 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-02 06:40:48,260 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 06:40:48,881 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-02 06:40:48,886 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 06:40:48,891 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 06:40:48,891 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-02 06:40:48,891 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1351776986] [2023-04-02 06:40:48,891 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1351776986] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-02 06:40:48,891 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-02 06:40:48,892 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2023-04-02 06:40:48,892 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [706854388] [2023-04-02 06:40:48,892 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-02 06:40:48,892 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-04-02 06:40:48,892 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-02 06:40:48,893 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-04-02 06:40:48,893 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=107, Unknown=0, NotChecked=0, Total=132 [2023-04-02 06:40:48,893 INFO L87 Difference]: Start difference. First operand 2274 states and 3293 transitions. Second operand has 12 states, 12 states have (on average 8.75) internal successors, (105), 11 states have internal predecessors, (105), 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 06:40:58,966 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-02 06:40:58,966 INFO L93 Difference]: Finished difference Result 8914 states and 13117 transitions. [2023-04-02 06:40:58,967 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-04-02 06:40:58,967 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 8.75) internal successors, (105), 11 states have internal predecessors, (105), 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 108 [2023-04-02 06:40:58,967 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-02 06:40:58,977 INFO L225 Difference]: With dead ends: 8914 [2023-04-02 06:40:58,977 INFO L226 Difference]: Without dead ends: 8332 [2023-04-02 06:40:58,978 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 61 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=142, Invalid=364, Unknown=0, NotChecked=0, Total=506 [2023-04-02 06:40:58,979 INFO L413 NwaCegarLoop]: 500 mSDtfsCounter, 1147 mSDsluCounter, 1271 mSDsCounter, 0 mSdLazyCounter, 849 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1147 SdHoareTripleChecker+Valid, 1771 SdHoareTripleChecker+Invalid, 862 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 849 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2023-04-02 06:40:58,979 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1147 Valid, 1771 Invalid, 862 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 849 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2023-04-02 06:40:58,984 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8332 states. [2023-04-02 06:41:00,928 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8332 to 2240. [2023-04-02 06:41:00,930 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2240 states, 2236 states have (on average 1.451252236135957) internal successors, (3245), 2236 states have internal predecessors, (3245), 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 06:41:00,934 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2240 states to 2240 states and 3248 transitions. [2023-04-02 06:41:00,934 INFO L78 Accepts]: Start accepts. Automaton has 2240 states and 3248 transitions. Word has length 108 [2023-04-02 06:41:00,934 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-02 06:41:00,934 INFO L495 AbstractCegarLoop]: Abstraction has 2240 states and 3248 transitions. [2023-04-02 06:41:00,934 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 8.75) internal successors, (105), 11 states have internal predecessors, (105), 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 06:41:00,934 INFO L276 IsEmpty]: Start isEmpty. Operand 2240 states and 3248 transitions. [2023-04-02 06:41:00,935 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 110 [2023-04-02 06:41:00,935 INFO L187 NwaCegarLoop]: Found error trace [2023-04-02 06:41:00,935 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 06:41:00,936 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2023-04-02 06:41:00,936 INFO L420 AbstractCegarLoop]: === Iteration 28 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-02 06:41:00,936 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-02 06:41:00,936 INFO L85 PathProgramCache]: Analyzing trace with hash -1656079709, now seen corresponding path program 1 times [2023-04-02 06:41:00,936 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-02 06:41:00,936 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2063521945] [2023-04-02 06:41:00,936 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 06:41:00,937 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-02 06:41:00,970 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 06:41:01,661 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-02 06:41:01,664 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 06:41:01,669 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 06:41:01,669 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-02 06:41:01,669 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2063521945] [2023-04-02 06:41:01,669 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2063521945] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-02 06:41:01,669 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-02 06:41:01,669 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2023-04-02 06:41:01,669 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [705592572] [2023-04-02 06:41:01,669 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-02 06:41:01,670 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2023-04-02 06:41:01,670 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-02 06:41:01,670 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2023-04-02 06:41:01,670 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=154, Unknown=0, NotChecked=0, Total=182 [2023-04-02 06:41:01,671 INFO L87 Difference]: Start difference. First operand 2240 states and 3248 transitions. Second operand has 14 states, 14 states have (on average 7.571428571428571) internal successors, (106), 13 states have internal predecessors, (106), 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 06:41:11,703 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-02 06:41:11,703 INFO L93 Difference]: Finished difference Result 8972 states and 13191 transitions. [2023-04-02 06:41:11,703 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2023-04-02 06:41:11,704 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 7.571428571428571) internal successors, (106), 13 states have internal predecessors, (106), 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 109 [2023-04-02 06:41:11,704 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-02 06:41:11,714 INFO L225 Difference]: With dead ends: 8972 [2023-04-02 06:41:11,714 INFO L226 Difference]: Without dead ends: 8387 [2023-04-02 06:41:11,716 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 80 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=165, Invalid=537, Unknown=0, NotChecked=0, Total=702 [2023-04-02 06:41:11,716 INFO L413 NwaCegarLoop]: 506 mSDtfsCounter, 1192 mSDsluCounter, 2456 mSDsCounter, 0 mSdLazyCounter, 1054 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1192 SdHoareTripleChecker+Valid, 2962 SdHoareTripleChecker+Invalid, 1067 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 1054 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2023-04-02 06:41:11,716 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1192 Valid, 2962 Invalid, 1067 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 1054 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2023-04-02 06:41:11,722 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8387 states. [2023-04-02 06:41:13,841 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8387 to 2196. [2023-04-02 06:41:13,843 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2196 states, 2192 states have (on average 1.4543795620437956) internal successors, (3188), 2192 states have internal predecessors, (3188), 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 06:41:13,845 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2196 states to 2196 states and 3191 transitions. [2023-04-02 06:41:13,845 INFO L78 Accepts]: Start accepts. Automaton has 2196 states and 3191 transitions. Word has length 109 [2023-04-02 06:41:13,846 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-02 06:41:13,846 INFO L495 AbstractCegarLoop]: Abstraction has 2196 states and 3191 transitions. [2023-04-02 06:41:13,846 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 7.571428571428571) internal successors, (106), 13 states have internal predecessors, (106), 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 06:41:13,846 INFO L276 IsEmpty]: Start isEmpty. Operand 2196 states and 3191 transitions. [2023-04-02 06:41:13,846 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 110 [2023-04-02 06:41:13,846 INFO L187 NwaCegarLoop]: Found error trace [2023-04-02 06:41:13,846 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 06:41:13,847 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2023-04-02 06:41:13,847 INFO L420 AbstractCegarLoop]: === Iteration 29 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-02 06:41:13,847 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-02 06:41:13,847 INFO L85 PathProgramCache]: Analyzing trace with hash -1368398589, now seen corresponding path program 1 times [2023-04-02 06:41:13,847 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-02 06:41:13,847 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1241819412] [2023-04-02 06:41:13,847 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 06:41:13,848 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-02 06:41:13,869 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 06:41:14,236 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-02 06:41:14,240 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 06:41:14,254 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 06:41:14,254 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-02 06:41:14,254 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1241819412] [2023-04-02 06:41:14,254 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1241819412] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-02 06:41:14,254 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-02 06:41:14,255 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2023-04-02 06:41:14,255 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2147301244] [2023-04-02 06:41:14,255 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-02 06:41:14,255 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2023-04-02 06:41:14,255 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-02 06:41:14,256 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2023-04-02 06:41:14,256 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2023-04-02 06:41:14,256 INFO L87 Difference]: Start difference. First operand 2196 states and 3191 transitions. Second operand has 11 states, 10 states have (on average 10.6) internal successors, (106), 9 states have internal predecessors, (106), 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 06:41:19,616 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-02 06:41:19,616 INFO L93 Difference]: Finished difference Result 6384 states and 9345 transitions. [2023-04-02 06:41:19,617 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2023-04-02 06:41:19,617 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 10 states have (on average 10.6) internal successors, (106), 9 states have internal predecessors, (106), 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 109 [2023-04-02 06:41:19,617 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-02 06:41:19,622 INFO L225 Difference]: With dead ends: 6384 [2023-04-02 06:41:19,622 INFO L226 Difference]: Without dead ends: 4322 [2023-04-02 06:41:19,624 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 80 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=145, Invalid=407, Unknown=0, NotChecked=0, Total=552 [2023-04-02 06:41:19,624 INFO L413 NwaCegarLoop]: 182 mSDtfsCounter, 936 mSDsluCounter, 450 mSDsCounter, 0 mSdLazyCounter, 915 mSolverCounterSat, 17 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 936 SdHoareTripleChecker+Valid, 632 SdHoareTripleChecker+Invalid, 932 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 915 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2023-04-02 06:41:19,625 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [936 Valid, 632 Invalid, 932 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [17 Valid, 915 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2023-04-02 06:41:19,627 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4322 states. [2023-04-02 06:41:21,979 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4322 to 2190. [2023-04-02 06:41:21,981 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2190 states, 2186 states have (on average 1.454711802378774) internal successors, (3180), 2186 states have internal predecessors, (3180), 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 06:41:21,984 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2190 states to 2190 states and 3183 transitions. [2023-04-02 06:41:21,984 INFO L78 Accepts]: Start accepts. Automaton has 2190 states and 3183 transitions. Word has length 109 [2023-04-02 06:41:21,984 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-02 06:41:21,984 INFO L495 AbstractCegarLoop]: Abstraction has 2190 states and 3183 transitions. [2023-04-02 06:41:21,984 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 10 states have (on average 10.6) internal successors, (106), 9 states have internal predecessors, (106), 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 06:41:21,984 INFO L276 IsEmpty]: Start isEmpty. Operand 2190 states and 3183 transitions. [2023-04-02 06:41:21,985 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 111 [2023-04-02 06:41:21,985 INFO L187 NwaCegarLoop]: Found error trace [2023-04-02 06:41:21,985 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 06:41:21,985 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2023-04-02 06:41:21,985 INFO L420 AbstractCegarLoop]: === Iteration 30 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-02 06:41:21,986 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-02 06:41:21,986 INFO L85 PathProgramCache]: Analyzing trace with hash -1589749852, now seen corresponding path program 1 times [2023-04-02 06:41:21,986 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-02 06:41:21,986 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [110690538] [2023-04-02 06:41:21,986 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 06:41:21,986 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-02 06:41:22,033 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 06:41:22,781 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-02 06:41:22,785 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 06:41:22,790 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 06:41:22,791 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-02 06:41:22,792 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [110690538] [2023-04-02 06:41:22,793 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [110690538] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-02 06:41:22,793 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-02 06:41:22,793 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2023-04-02 06:41:22,793 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [740452251] [2023-04-02 06:41:22,793 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-02 06:41:22,793 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2023-04-02 06:41:22,793 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-02 06:41:22,794 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2023-04-02 06:41:22,794 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=153, Unknown=0, NotChecked=0, Total=182 [2023-04-02 06:41:22,794 INFO L87 Difference]: Start difference. First operand 2190 states and 3183 transitions. Second operand has 14 states, 14 states have (on average 7.642857142857143) internal successors, (107), 13 states have internal predecessors, (107), 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 06:41:33,808 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-02 06:41:33,809 INFO L93 Difference]: Finished difference Result 8862 states and 13048 transitions. [2023-04-02 06:41:33,809 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2023-04-02 06:41:33,809 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 7.642857142857143) internal successors, (107), 13 states have internal predecessors, (107), 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 110 [2023-04-02 06:41:33,809 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-02 06:41:33,817 INFO L225 Difference]: With dead ends: 8862 [2023-04-02 06:41:33,817 INFO L226 Difference]: Without dead ends: 8304 [2023-04-02 06:41:33,819 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 89 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=166, Invalid=536, Unknown=0, NotChecked=0, Total=702 [2023-04-02 06:41:33,820 INFO L413 NwaCegarLoop]: 488 mSDtfsCounter, 1131 mSDsluCounter, 2351 mSDsCounter, 0 mSdLazyCounter, 1031 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1131 SdHoareTripleChecker+Valid, 2839 SdHoareTripleChecker+Invalid, 1044 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 1031 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2023-04-02 06:41:33,820 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1131 Valid, 2839 Invalid, 1044 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 1031 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2023-04-02 06:41:33,824 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8304 states. [2023-04-02 06:41:36,107 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8304 to 2161. [2023-04-02 06:41:36,109 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2161 states, 2157 states have (on average 1.4571163653222068) internal successors, (3143), 2157 states have internal predecessors, (3143), 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 06:41:36,111 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2161 states to 2161 states and 3146 transitions. [2023-04-02 06:41:36,111 INFO L78 Accepts]: Start accepts. Automaton has 2161 states and 3146 transitions. Word has length 110 [2023-04-02 06:41:36,111 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-02 06:41:36,111 INFO L495 AbstractCegarLoop]: Abstraction has 2161 states and 3146 transitions. [2023-04-02 06:41:36,111 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 7.642857142857143) internal successors, (107), 13 states have internal predecessors, (107), 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 06:41:36,111 INFO L276 IsEmpty]: Start isEmpty. Operand 2161 states and 3146 transitions. [2023-04-02 06:41:36,113 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 142 [2023-04-02 06:41:36,113 INFO L187 NwaCegarLoop]: Found error trace [2023-04-02 06:41:36,113 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 06:41:36,113 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2023-04-02 06:41:36,114 INFO L420 AbstractCegarLoop]: === Iteration 31 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-02 06:41:36,114 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-02 06:41:36,114 INFO L85 PathProgramCache]: Analyzing trace with hash 2018202281, now seen corresponding path program 1 times [2023-04-02 06:41:36,114 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-02 06:41:36,114 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [228651788] [2023-04-02 06:41:36,114 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 06:41:36,114 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-02 06:41:36,142 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 06:41:36,380 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-02 06:41:36,384 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 06:41:36,394 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-02 06:41:36,394 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-02 06:41:36,394 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [228651788] [2023-04-02 06:41:36,394 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [228651788] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-02 06:41:36,394 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-02 06:41:36,394 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-04-02 06:41:36,395 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [387641737] [2023-04-02 06:41:36,395 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-02 06:41:36,395 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-04-02 06:41:36,395 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-02 06:41:36,396 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-04-02 06:41:36,396 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2023-04-02 06:41:36,396 INFO L87 Difference]: Start difference. First operand 2161 states and 3146 transitions. Second operand has 8 states, 7 states have (on average 19.714285714285715) internal successors, (138), 6 states have internal predecessors, (138), 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 06:41:49,469 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-02 06:41:49,469 INFO L93 Difference]: Finished difference Result 12853 states and 18934 transitions. [2023-04-02 06:41:49,469 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2023-04-02 06:41:49,469 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 19.714285714285715) internal successors, (138), 6 states have internal predecessors, (138), 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 141 [2023-04-02 06:41:49,470 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-02 06:41:49,480 INFO L225 Difference]: With dead ends: 12853 [2023-04-02 06:41:49,481 INFO L226 Difference]: Without dead ends: 10825 [2023-04-02 06:41:49,484 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=82, Invalid=190, Unknown=0, NotChecked=0, Total=272 [2023-04-02 06:41:49,484 INFO L413 NwaCegarLoop]: 190 mSDtfsCounter, 1410 mSDsluCounter, 367 mSDsCounter, 0 mSdLazyCounter, 797 mSolverCounterSat, 18 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1410 SdHoareTripleChecker+Valid, 557 SdHoareTripleChecker+Invalid, 815 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 18 IncrementalHoareTripleChecker+Valid, 797 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2023-04-02 06:41:49,484 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1410 Valid, 557 Invalid, 815 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [18 Valid, 797 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2023-04-02 06:41:49,488 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10825 states. [2023-04-02 06:41:54,276 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10825 to 4487. [2023-04-02 06:41:54,280 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4487 states, 4483 states have (on average 1.4641980816417577) internal successors, (6564), 4483 states have internal predecessors, (6564), 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 06:41:54,288 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4487 states to 4487 states and 6567 transitions. [2023-04-02 06:41:54,289 INFO L78 Accepts]: Start accepts. Automaton has 4487 states and 6567 transitions. Word has length 141 [2023-04-02 06:41:54,289 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-02 06:41:54,289 INFO L495 AbstractCegarLoop]: Abstraction has 4487 states and 6567 transitions. [2023-04-02 06:41:54,289 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 19.714285714285715) internal successors, (138), 6 states have internal predecessors, (138), 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 06:41:54,289 INFO L276 IsEmpty]: Start isEmpty. Operand 4487 states and 6567 transitions. [2023-04-02 06:41:54,291 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 142 [2023-04-02 06:41:54,292 INFO L187 NwaCegarLoop]: Found error trace [2023-04-02 06:41:54,292 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 06:41:54,292 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30 [2023-04-02 06:41:54,292 INFO L420 AbstractCegarLoop]: === Iteration 32 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-02 06:41:54,292 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-02 06:41:54,293 INFO L85 PathProgramCache]: Analyzing trace with hash 30389685, now seen corresponding path program 1 times [2023-04-02 06:41:54,293 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-02 06:41:54,293 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [521876714] [2023-04-02 06:41:54,293 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 06:41:54,293 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-02 06:41:54,317 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 06:41:54,546 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-02 06:41:54,550 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 06:41:54,561 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-02 06:41:54,561 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-02 06:41:54,561 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [521876714] [2023-04-02 06:41:54,561 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [521876714] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-02 06:41:54,561 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-02 06:41:54,561 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-04-02 06:41:54,561 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1391726173] [2023-04-02 06:41:54,561 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-02 06:41:54,562 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-04-02 06:41:54,562 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-02 06:41:54,562 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-04-02 06:41:54,562 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2023-04-02 06:41:54,562 INFO L87 Difference]: Start difference. First operand 4487 states and 6567 transitions. Second operand has 8 states, 7 states have (on average 19.714285714285715) internal successors, (138), 6 states have internal predecessors, (138), 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 06:42:19,414 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-02 06:42:19,414 INFO L93 Difference]: Finished difference Result 25863 states and 38019 transitions. [2023-04-02 06:42:19,414 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2023-04-02 06:42:19,414 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 19.714285714285715) internal successors, (138), 6 states have internal predecessors, (138), 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 141 [2023-04-02 06:42:19,415 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-02 06:42:19,438 INFO L225 Difference]: With dead ends: 25863 [2023-04-02 06:42:19,439 INFO L226 Difference]: Without dead ends: 21509 [2023-04-02 06:42:19,445 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=82, Invalid=190, Unknown=0, NotChecked=0, Total=272 [2023-04-02 06:42:19,446 INFO L413 NwaCegarLoop]: 141 mSDtfsCounter, 1990 mSDsluCounter, 293 mSDsCounter, 0 mSdLazyCounter, 583 mSolverCounterSat, 26 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1990 SdHoareTripleChecker+Valid, 434 SdHoareTripleChecker+Invalid, 609 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 26 IncrementalHoareTripleChecker+Valid, 583 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2023-04-02 06:42:19,446 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1990 Valid, 434 Invalid, 609 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [26 Valid, 583 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2023-04-02 06:42:19,456 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21509 states. [2023-04-02 06:42:29,531 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21509 to 9439. [2023-04-02 06:42:29,537 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9439 states, 9435 states have (on average 1.4653948065712772) internal successors, (13826), 9435 states have internal predecessors, (13826), 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 06:42:29,547 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9439 states to 9439 states and 13829 transitions. [2023-04-02 06:42:29,548 INFO L78 Accepts]: Start accepts. Automaton has 9439 states and 13829 transitions. Word has length 141 [2023-04-02 06:42:29,548 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-02 06:42:29,548 INFO L495 AbstractCegarLoop]: Abstraction has 9439 states and 13829 transitions. [2023-04-02 06:42:29,548 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 19.714285714285715) internal successors, (138), 6 states have internal predecessors, (138), 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 06:42:29,548 INFO L276 IsEmpty]: Start isEmpty. Operand 9439 states and 13829 transitions. [2023-04-02 06:42:29,551 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 142 [2023-04-02 06:42:29,551 INFO L187 NwaCegarLoop]: Found error trace [2023-04-02 06:42:29,551 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 06:42:29,551 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31 [2023-04-02 06:42:29,551 INFO L420 AbstractCegarLoop]: === Iteration 33 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-02 06:42:29,552 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-02 06:42:29,552 INFO L85 PathProgramCache]: Analyzing trace with hash -358195273, now seen corresponding path program 1 times [2023-04-02 06:42:29,552 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-02 06:42:29,552 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [247817268] [2023-04-02 06:42:29,552 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 06:42:29,552 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-02 06:42:29,578 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 06:42:29,806 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-02 06:42:29,810 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 06:42:29,818 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-02 06:42:29,818 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-02 06:42:29,818 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [247817268] [2023-04-02 06:42:29,818 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [247817268] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-02 06:42:29,818 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-02 06:42:29,818 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-04-02 06:42:29,818 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [962010601] [2023-04-02 06:42:29,819 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-02 06:42:29,819 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-04-02 06:42:29,819 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-02 06:42:29,819 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-04-02 06:42:29,819 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2023-04-02 06:42:29,820 INFO L87 Difference]: Start difference. First operand 9439 states and 13829 transitions. Second operand has 8 states, 7 states have (on average 19.714285714285715) internal successors, (138), 6 states have internal predecessors, (138), 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)