/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/pals_lcr.5.1.ufo.UNBOUNDED.pals.c -------------------------------------------------------------------------------- This is Ultimate 0.2.3-dev-f954360 [2023-04-02 05:17:24,356 INFO L177 SettingsManager]: Resetting all preferences to default values... [2023-04-02 05:17:24,357 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2023-04-02 05:17:24,381 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2023-04-02 05:17:24,381 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2023-04-02 05:17:24,382 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2023-04-02 05:17:24,383 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2023-04-02 05:17:24,385 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2023-04-02 05:17:24,387 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2023-04-02 05:17:24,387 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2023-04-02 05:17:24,388 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2023-04-02 05:17:24,389 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2023-04-02 05:17:24,389 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2023-04-02 05:17:24,390 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2023-04-02 05:17:24,391 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2023-04-02 05:17:24,392 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2023-04-02 05:17:24,392 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2023-04-02 05:17:24,394 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2023-04-02 05:17:24,395 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2023-04-02 05:17:24,397 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2023-04-02 05:17:24,398 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2023-04-02 05:17:24,401 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2023-04-02 05:17:24,402 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2023-04-02 05:17:24,403 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2023-04-02 05:17:24,406 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2023-04-02 05:17:24,406 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2023-04-02 05:17:24,407 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2023-04-02 05:17:24,407 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2023-04-02 05:17:24,408 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2023-04-02 05:17:24,408 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2023-04-02 05:17:24,409 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2023-04-02 05:17:24,409 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2023-04-02 05:17:24,410 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2023-04-02 05:17:24,410 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2023-04-02 05:17:24,411 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2023-04-02 05:17:24,412 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2023-04-02 05:17:24,412 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2023-04-02 05:17:24,412 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2023-04-02 05:17:24,413 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2023-04-02 05:17:24,413 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2023-04-02 05:17:24,414 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2023-04-02 05:17:24,422 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 05:17:24,455 INFO L113 SettingsManager]: Loading preferences was successful [2023-04-02 05:17:24,455 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2023-04-02 05:17:24,455 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-04-02 05:17:24,456 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-04-02 05:17:24,456 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-04-02 05:17:24,456 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-04-02 05:17:24,457 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-04-02 05:17:24,457 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2023-04-02 05:17:24,457 INFO L138 SettingsManager]: * Use SBE=true [2023-04-02 05:17:24,457 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-04-02 05:17:24,457 INFO L138 SettingsManager]: * sizeof long=4 [2023-04-02 05:17:24,457 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2023-04-02 05:17:24,458 INFO L138 SettingsManager]: * sizeof POINTER=4 [2023-04-02 05:17:24,458 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2023-04-02 05:17:24,458 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-04-02 05:17:24,458 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-04-02 05:17:24,458 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-04-02 05:17:24,458 INFO L138 SettingsManager]: * sizeof long double=12 [2023-04-02 05:17:24,458 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2023-04-02 05:17:24,458 INFO L138 SettingsManager]: * Use constant arrays=true [2023-04-02 05:17:24,458 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-04-02 05:17:24,459 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-04-02 05:17:24,459 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-04-02 05:17:24,459 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2023-04-02 05:17:24,459 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-04-02 05:17:24,459 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-04-02 05:17:24,459 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-04-02 05:17:24,459 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-04-02 05:17:24,459 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2023-04-02 05:17:24,460 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-04-02 05:17:24,460 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-04-02 05:17:24,460 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-04-02 05:17:24,460 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-04-02 05:17:24,460 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-04-02 05:17:24,460 INFO L138 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-04-02 05:17:24,460 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2023-04-02 05:17:24,698 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-04-02 05:17:24,718 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-04-02 05:17:24,720 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-04-02 05:17:24,721 INFO L271 PluginConnector]: Initializing CDTParser... [2023-04-02 05:17:24,721 INFO L275 PluginConnector]: CDTParser initialized [2023-04-02 05:17:24,722 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/seq-mthreaded/pals_lcr.5.1.ufo.UNBOUNDED.pals.c [2023-04-02 05:17:25,877 INFO L500 CDTParser]: Created temporary CDT project at NULL [2023-04-02 05:17:26,109 INFO L351 CDTParser]: Found 1 translation units. [2023-04-02 05:17:26,109 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/seq-mthreaded/pals_lcr.5.1.ufo.UNBOUNDED.pals.c [2023-04-02 05:17:26,117 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/8bb2f4b7c/0c0a20bafa1b464cac4c27e3fae98999/FLAG7e3421e3d [2023-04-02 05:17:26,128 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/8bb2f4b7c/0c0a20bafa1b464cac4c27e3fae98999 [2023-04-02 05:17:26,130 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-04-02 05:17:26,131 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2023-04-02 05:17:26,132 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-04-02 05:17:26,133 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-04-02 05:17:26,138 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2023-04-02 05:17:26,139 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.04 05:17:26" (1/1) ... [2023-04-02 05:17:26,139 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@33e1c60b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.04 05:17:26, skipping insertion in model container [2023-04-02 05:17:26,139 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.04 05:17:26" (1/1) ... [2023-04-02 05:17:26,144 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2023-04-02 05:17:26,176 INFO L178 MainTranslator]: Built tables and reachable declarations [2023-04-02 05:17:26,357 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/pals_lcr.5.1.ufo.UNBOUNDED.pals.c[11298,11311] [2023-04-02 05:17:26,361 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-04-02 05:17:26,370 INFO L203 MainTranslator]: Completed pre-run [2023-04-02 05:17:26,409 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/pals_lcr.5.1.ufo.UNBOUNDED.pals.c[11298,11311] [2023-04-02 05:17:26,409 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-04-02 05:17:26,423 INFO L208 MainTranslator]: Completed translation [2023-04-02 05:17:26,423 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.04 05:17:26 WrapperNode [2023-04-02 05:17:26,423 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-04-02 05:17:26,424 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-04-02 05:17:26,424 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2023-04-02 05:17:26,425 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2023-04-02 05:17:26,435 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.04 05:17:26" (1/1) ... [2023-04-02 05:17:26,435 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.04 05:17:26" (1/1) ... [2023-04-02 05:17:26,442 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.04 05:17:26" (1/1) ... [2023-04-02 05:17:26,443 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.04 05:17:26" (1/1) ... [2023-04-02 05:17:26,458 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.04 05:17:26" (1/1) ... [2023-04-02 05:17:26,470 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.04 05:17:26" (1/1) ... [2023-04-02 05:17:26,472 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.04 05:17:26" (1/1) ... [2023-04-02 05:17:26,473 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.04 05:17:26" (1/1) ... [2023-04-02 05:17:26,476 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-04-02 05:17:26,477 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-04-02 05:17:26,477 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2023-04-02 05:17:26,477 INFO L275 PluginConnector]: RCFGBuilder initialized [2023-04-02 05:17:26,478 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.04 05:17:26" (1/1) ... [2023-04-02 05:17:26,489 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-04-02 05:17:26,501 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-04-02 05:17:26,513 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 05:17:26,515 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 05:17:26,545 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2023-04-02 05:17:26,545 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-04-02 05:17:26,548 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2023-04-02 05:17:26,548 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2023-04-02 05:17:26,548 INFO L138 BoogieDeclarations]: Found implementation of procedure node1 [2023-04-02 05:17:26,548 INFO L138 BoogieDeclarations]: Found implementation of procedure node2 [2023-04-02 05:17:26,548 INFO L138 BoogieDeclarations]: Found implementation of procedure node3 [2023-04-02 05:17:26,549 INFO L138 BoogieDeclarations]: Found implementation of procedure node4 [2023-04-02 05:17:26,549 INFO L138 BoogieDeclarations]: Found implementation of procedure node5 [2023-04-02 05:17:26,549 INFO L138 BoogieDeclarations]: Found implementation of procedure init [2023-04-02 05:17:26,552 INFO L138 BoogieDeclarations]: Found implementation of procedure check [2023-04-02 05:17:26,552 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2023-04-02 05:17:26,552 INFO L138 BoogieDeclarations]: Found implementation of procedure assert [2023-04-02 05:17:26,553 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2023-04-02 05:17:26,553 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2023-04-02 05:17:26,553 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2023-04-02 05:17:26,553 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-04-02 05:17:26,553 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_bool [2023-04-02 05:17:26,553 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_char [2023-04-02 05:17:26,553 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_uchar [2023-04-02 05:17:26,553 INFO L130 BoogieDeclarations]: Found specification of procedure assert [2023-04-02 05:17:26,553 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2023-04-02 05:17:26,553 INFO L130 BoogieDeclarations]: Found specification of procedure read [2023-04-02 05:17:26,554 INFO L130 BoogieDeclarations]: Found specification of procedure write [2023-04-02 05:17:26,554 INFO L130 BoogieDeclarations]: Found specification of procedure node1 [2023-04-02 05:17:26,554 INFO L130 BoogieDeclarations]: Found specification of procedure node2 [2023-04-02 05:17:26,554 INFO L130 BoogieDeclarations]: Found specification of procedure node3 [2023-04-02 05:17:26,554 INFO L130 BoogieDeclarations]: Found specification of procedure node4 [2023-04-02 05:17:26,554 INFO L130 BoogieDeclarations]: Found specification of procedure node5 [2023-04-02 05:17:26,554 INFO L130 BoogieDeclarations]: Found specification of procedure init [2023-04-02 05:17:26,554 INFO L130 BoogieDeclarations]: Found specification of procedure check [2023-04-02 05:17:26,554 INFO L130 BoogieDeclarations]: Found specification of procedure main [2023-04-02 05:17:26,555 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2023-04-02 05:17:26,555 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-04-02 05:17:26,555 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-04-02 05:17:26,555 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-04-02 05:17:26,555 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-04-02 05:17:26,555 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-04-02 05:17:26,645 INFO L236 CfgBuilder]: Building ICFG [2023-04-02 05:17:26,646 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-04-02 05:17:27,095 INFO L277 CfgBuilder]: Performing block encoding [2023-04-02 05:17:27,101 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-04-02 05:17:27,101 INFO L302 CfgBuilder]: Removed 1 assume(true) statements. [2023-04-02 05:17:27,103 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.04 05:17:27 BoogieIcfgContainer [2023-04-02 05:17:27,103 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-04-02 05:17:27,105 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-04-02 05:17:27,105 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2023-04-02 05:17:27,113 INFO L275 PluginConnector]: TraceAbstraction initialized [2023-04-02 05:17:27,113 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 02.04 05:17:26" (1/3) ... [2023-04-02 05:17:27,114 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5ce9a709 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.04 05:17:27, skipping insertion in model container [2023-04-02 05:17:27,114 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.04 05:17:26" (2/3) ... [2023-04-02 05:17:27,114 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5ce9a709 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.04 05:17:27, skipping insertion in model container [2023-04-02 05:17:27,114 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.04 05:17:27" (3/3) ... [2023-04-02 05:17:27,115 INFO L112 eAbstractionObserver]: Analyzing ICFG pals_lcr.5.1.ufo.UNBOUNDED.pals.c [2023-04-02 05:17:27,129 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-04-02 05:17:27,129 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-04-02 05:17:27,172 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-04-02 05:17:27,177 INFO L357 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=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;@8ef816c, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-04-02 05:17:27,177 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-04-02 05:17:27,182 INFO L276 IsEmpty]: Start isEmpty. Operand has 121 states, 97 states have (on average 1.6391752577319587) internal successors, (159), 99 states have internal predecessors, (159), 11 states have call successors, (11), 11 states have call predecessors, (11), 11 states have return successors, (11), 11 states have call predecessors, (11), 11 states have call successors, (11) [2023-04-02 05:17:27,191 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2023-04-02 05:17:27,191 INFO L187 NwaCegarLoop]: Found error trace [2023-04-02 05:17:27,192 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] [2023-04-02 05:17:27,192 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-02 05:17:27,196 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-02 05:17:27,196 INFO L85 PathProgramCache]: Analyzing trace with hash -642962173, now seen corresponding path program 1 times [2023-04-02 05:17:27,201 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-02 05:17:27,202 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1482340139] [2023-04-02 05:17:27,202 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 05:17:27,202 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-02 05:17:27,333 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:17:27,617 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-02 05:17:27,639 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:17:27,660 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2023-04-02 05:17:27,663 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:17:27,678 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2023-04-02 05:17:27,683 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:17:27,707 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2023-04-02 05:17:27,720 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:17:27,746 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2023-04-02 05:17:27,749 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:17:27,765 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2023-04-02 05:17:27,770 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:17:27,795 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2023-04-02 05:17:27,799 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:17:27,828 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2023-04-02 05:17:27,834 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:17:27,839 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2023-04-02 05:17:27,841 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:17:27,848 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 05:17:27,849 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-02 05:17:27,849 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1482340139] [2023-04-02 05:17:27,850 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1482340139] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-02 05:17:27,850 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-02 05:17:27,850 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-04-02 05:17:27,851 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [342538542] [2023-04-02 05:17:27,852 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-02 05:17:27,856 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-04-02 05:17:27,856 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-02 05:17:27,896 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-04-02 05:17:27,896 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2023-04-02 05:17:27,898 INFO L87 Difference]: Start difference. First operand has 121 states, 97 states have (on average 1.6391752577319587) internal successors, (159), 99 states have internal predecessors, (159), 11 states have call successors, (11), 11 states have call predecessors, (11), 11 states have return successors, (11), 11 states have call predecessors, (11), 11 states have call successors, (11) Second operand has 8 states, 8 states have (on average 4.625) internal successors, (37), 2 states have internal predecessors, (37), 2 states have call successors, (11), 8 states have call predecessors, (11), 2 states have return successors, (9), 2 states have call predecessors, (9), 2 states have call successors, (9) [2023-04-02 05:17:28,640 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-02 05:17:28,640 INFO L93 Difference]: Finished difference Result 192 states and 282 transitions. [2023-04-02 05:17:28,641 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-04-02 05:17:28,643 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 4.625) internal successors, (37), 2 states have internal predecessors, (37), 2 states have call successors, (11), 8 states have call predecessors, (11), 2 states have return successors, (9), 2 states have call predecessors, (9), 2 states have call successors, (9) Word has length 57 [2023-04-02 05:17:28,643 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-02 05:17:28,650 INFO L225 Difference]: With dead ends: 192 [2023-04-02 05:17:28,650 INFO L226 Difference]: Without dead ends: 117 [2023-04-02 05:17:28,654 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=53, Invalid=103, Unknown=0, NotChecked=0, Total=156 [2023-04-02 05:17:28,659 INFO L413 NwaCegarLoop]: 28 mSDtfsCounter, 669 mSDsluCounter, 25 mSDsCounter, 0 mSdLazyCounter, 273 mSolverCounterSat, 50 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 669 SdHoareTripleChecker+Valid, 53 SdHoareTripleChecker+Invalid, 323 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 50 IncrementalHoareTripleChecker+Valid, 273 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-04-02 05:17:28,661 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [669 Valid, 53 Invalid, 323 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [50 Valid, 273 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-04-02 05:17:28,674 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 117 states. [2023-04-02 05:17:28,708 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 117 to 116. [2023-04-02 05:17:28,710 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 116 states, 94 states have (on average 1.6170212765957446) internal successors, (152), 95 states have internal predecessors, (152), 11 states have call successors, (11), 11 states have call predecessors, (11), 10 states have return successors, (10), 10 states have call predecessors, (10), 10 states have call successors, (10) [2023-04-02 05:17:28,711 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 116 states to 116 states and 173 transitions. [2023-04-02 05:17:28,712 INFO L78 Accepts]: Start accepts. Automaton has 116 states and 173 transitions. Word has length 57 [2023-04-02 05:17:28,713 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-02 05:17:28,713 INFO L495 AbstractCegarLoop]: Abstraction has 116 states and 173 transitions. [2023-04-02 05:17:28,713 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 4.625) internal successors, (37), 2 states have internal predecessors, (37), 2 states have call successors, (11), 8 states have call predecessors, (11), 2 states have return successors, (9), 2 states have call predecessors, (9), 2 states have call successors, (9) [2023-04-02 05:17:28,713 INFO L276 IsEmpty]: Start isEmpty. Operand 116 states and 173 transitions. [2023-04-02 05:17:28,715 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2023-04-02 05:17:28,715 INFO L187 NwaCegarLoop]: Found error trace [2023-04-02 05:17:28,715 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] [2023-04-02 05:17:28,716 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-04-02 05:17:28,716 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-02 05:17:28,716 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-02 05:17:28,717 INFO L85 PathProgramCache]: Analyzing trace with hash -394815679, now seen corresponding path program 1 times [2023-04-02 05:17:28,717 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-02 05:17:28,717 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [189986627] [2023-04-02 05:17:28,717 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 05:17:28,717 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-02 05:17:28,760 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:17:29,022 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-02 05:17:29,027 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:17:29,049 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2023-04-02 05:17:29,055 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:17:29,105 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2023-04-02 05:17:29,114 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:17:29,157 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2023-04-02 05:17:29,160 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:17:29,179 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2023-04-02 05:17:29,187 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:17:29,215 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2023-04-02 05:17:29,218 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:17:29,239 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2023-04-02 05:17:29,242 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:17:29,262 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2023-04-02 05:17:29,272 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:17:29,276 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2023-04-02 05:17:29,278 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:17:29,280 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 05:17:29,281 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-02 05:17:29,281 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [189986627] [2023-04-02 05:17:29,282 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [189986627] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-02 05:17:29,282 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-02 05:17:29,282 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2023-04-02 05:17:29,282 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1382229628] [2023-04-02 05:17:29,282 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-02 05:17:29,284 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2023-04-02 05:17:29,284 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-02 05:17:29,285 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2023-04-02 05:17:29,285 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=152, Unknown=0, NotChecked=0, Total=182 [2023-04-02 05:17:29,286 INFO L87 Difference]: Start difference. First operand 116 states and 173 transitions. Second operand has 14 states, 13 states have (on average 2.8461538461538463) internal successors, (37), 7 states have internal predecessors, (37), 3 states have call successors, (11), 8 states have call predecessors, (11), 3 states have return successors, (9), 3 states have call predecessors, (9), 3 states have call successors, (9) [2023-04-02 05:17:30,671 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-02 05:17:30,672 INFO L93 Difference]: Finished difference Result 190 states and 274 transitions. [2023-04-02 05:17:30,672 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-04-02 05:17:30,672 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 13 states have (on average 2.8461538461538463) internal successors, (37), 7 states have internal predecessors, (37), 3 states have call successors, (11), 8 states have call predecessors, (11), 3 states have return successors, (9), 3 states have call predecessors, (9), 3 states have call successors, (9) Word has length 57 [2023-04-02 05:17:30,673 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-02 05:17:30,674 INFO L225 Difference]: With dead ends: 190 [2023-04-02 05:17:30,674 INFO L226 Difference]: Without dead ends: 117 [2023-04-02 05:17:30,675 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 54 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=125, Invalid=381, Unknown=0, NotChecked=0, Total=506 [2023-04-02 05:17:30,676 INFO L413 NwaCegarLoop]: 26 mSDtfsCounter, 686 mSDsluCounter, 118 mSDsCounter, 0 mSdLazyCounter, 1179 mSolverCounterSat, 86 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 693 SdHoareTripleChecker+Valid, 144 SdHoareTripleChecker+Invalid, 1265 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 86 IncrementalHoareTripleChecker+Valid, 1179 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2023-04-02 05:17:30,677 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [693 Valid, 144 Invalid, 1265 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [86 Valid, 1179 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2023-04-02 05:17:30,678 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 117 states. [2023-04-02 05:17:30,696 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 117 to 116. [2023-04-02 05:17:30,697 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 116 states, 94 states have (on average 1.2872340425531914) internal successors, (121), 95 states have internal predecessors, (121), 11 states have call successors, (11), 11 states have call predecessors, (11), 10 states have return successors, (10), 10 states have call predecessors, (10), 10 states have call successors, (10) [2023-04-02 05:17:30,697 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 116 states to 116 states and 142 transitions. [2023-04-02 05:17:30,698 INFO L78 Accepts]: Start accepts. Automaton has 116 states and 142 transitions. Word has length 57 [2023-04-02 05:17:30,698 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-02 05:17:30,698 INFO L495 AbstractCegarLoop]: Abstraction has 116 states and 142 transitions. [2023-04-02 05:17:30,698 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 13 states have (on average 2.8461538461538463) internal successors, (37), 7 states have internal predecessors, (37), 3 states have call successors, (11), 8 states have call predecessors, (11), 3 states have return successors, (9), 3 states have call predecessors, (9), 3 states have call successors, (9) [2023-04-02 05:17:30,698 INFO L276 IsEmpty]: Start isEmpty. Operand 116 states and 142 transitions. [2023-04-02 05:17:30,700 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 88 [2023-04-02 05:17:30,700 INFO L187 NwaCegarLoop]: Found error trace [2023-04-02 05:17:30,701 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] [2023-04-02 05:17:30,701 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-04-02 05:17:30,701 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-02 05:17:30,701 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-02 05:17:30,701 INFO L85 PathProgramCache]: Analyzing trace with hash 435796952, now seen corresponding path program 1 times [2023-04-02 05:17:30,702 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-02 05:17:30,702 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1552181796] [2023-04-02 05:17:30,702 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 05:17:30,702 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-02 05:17:30,730 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:17:31,114 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-02 05:17:31,118 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:17:31,123 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2023-04-02 05:17:31,127 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:17:31,205 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2023-04-02 05:17:31,208 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:17:31,225 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2023-04-02 05:17:31,229 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:17:31,269 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2023-04-02 05:17:31,272 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:17:31,309 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2023-04-02 05:17:31,312 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:17:31,348 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2023-04-02 05:17:31,350 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:17:31,393 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2023-04-02 05:17:31,396 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:17:31,417 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2023-04-02 05:17:31,419 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:17:31,436 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 05:17:31,436 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-02 05:17:31,437 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1552181796] [2023-04-02 05:17:31,437 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1552181796] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-02 05:17:31,437 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-02 05:17:31,437 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [19] imperfect sequences [] total 19 [2023-04-02 05:17:31,437 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2004891609] [2023-04-02 05:17:31,437 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-02 05:17:31,438 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2023-04-02 05:17:31,438 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-02 05:17:31,439 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2023-04-02 05:17:31,439 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=50, Invalid=292, Unknown=0, NotChecked=0, Total=342 [2023-04-02 05:17:31,439 INFO L87 Difference]: Start difference. First operand 116 states and 142 transitions. Second operand has 19 states, 19 states have (on average 3.526315789473684) internal successors, (67), 13 states have internal predecessors, (67), 3 states have call successors, (11), 8 states have call predecessors, (11), 8 states have return successors, (9), 3 states have call predecessors, (9), 2 states have call successors, (9) [2023-04-02 05:17:40,234 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-02 05:17:40,234 INFO L93 Difference]: Finished difference Result 1164 states and 1644 transitions. [2023-04-02 05:17:40,237 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 122 states. [2023-04-02 05:17:40,237 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 3.526315789473684) internal successors, (67), 13 states have internal predecessors, (67), 3 states have call successors, (11), 8 states have call predecessors, (11), 8 states have return successors, (9), 3 states have call predecessors, (9), 2 states have call successors, (9) Word has length 87 [2023-04-02 05:17:40,237 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-02 05:17:40,247 INFO L225 Difference]: With dead ends: 1164 [2023-04-02 05:17:40,247 INFO L226 Difference]: Without dead ends: 1097 [2023-04-02 05:17:40,253 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 163 GetRequests, 30 SyntacticMatches, 0 SemanticMatches, 133 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6570 ImplicationChecksByTransitivity, 6.0s TimeCoverageRelationStatistics Valid=2884, Invalid=15206, Unknown=0, NotChecked=0, Total=18090 [2023-04-02 05:17:40,254 INFO L413 NwaCegarLoop]: 60 mSDtfsCounter, 3591 mSDsluCounter, 206 mSDsCounter, 0 mSdLazyCounter, 3392 mSolverCounterSat, 450 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3604 SdHoareTripleChecker+Valid, 266 SdHoareTripleChecker+Invalid, 3842 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 450 IncrementalHoareTripleChecker+Valid, 3392 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.7s IncrementalHoareTripleChecker+Time [2023-04-02 05:17:40,255 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3604 Valid, 266 Invalid, 3842 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [450 Valid, 3392 Invalid, 0 Unknown, 0 Unchecked, 2.7s Time] [2023-04-02 05:17:40,257 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1097 states. [2023-04-02 05:17:40,360 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1097 to 463. [2023-04-02 05:17:40,361 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 463 states, 361 states have (on average 1.4099722991689752) internal successors, (509), 372 states have internal predecessors, (509), 46 states have call successors, (46), 46 states have call predecessors, (46), 55 states have return successors, (79), 45 states have call predecessors, (79), 45 states have call successors, (79) [2023-04-02 05:17:40,364 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 463 states to 463 states and 634 transitions. [2023-04-02 05:17:40,364 INFO L78 Accepts]: Start accepts. Automaton has 463 states and 634 transitions. Word has length 87 [2023-04-02 05:17:40,366 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-02 05:17:40,366 INFO L495 AbstractCegarLoop]: Abstraction has 463 states and 634 transitions. [2023-04-02 05:17:40,366 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 3.526315789473684) internal successors, (67), 13 states have internal predecessors, (67), 3 states have call successors, (11), 8 states have call predecessors, (11), 8 states have return successors, (9), 3 states have call predecessors, (9), 2 states have call successors, (9) [2023-04-02 05:17:40,366 INFO L276 IsEmpty]: Start isEmpty. Operand 463 states and 634 transitions. [2023-04-02 05:17:40,371 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 90 [2023-04-02 05:17:40,371 INFO L187 NwaCegarLoop]: Found error trace [2023-04-02 05:17:40,371 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] [2023-04-02 05:17:40,371 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-04-02 05:17:40,372 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-02 05:17:40,372 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-02 05:17:40,372 INFO L85 PathProgramCache]: Analyzing trace with hash 469318344, now seen corresponding path program 1 times [2023-04-02 05:17:40,372 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-02 05:17:40,372 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [48879944] [2023-04-02 05:17:40,373 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 05:17:40,373 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-02 05:17:40,392 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:17:40,504 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-02 05:17:40,507 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:17:40,511 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2023-04-02 05:17:40,514 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:17:40,519 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2023-04-02 05:17:40,520 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:17:40,532 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2023-04-02 05:17:40,533 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:17:40,543 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2023-04-02 05:17:40,545 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:17:40,566 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2023-04-02 05:17:40,568 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:17:40,581 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2023-04-02 05:17:40,583 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:17:40,595 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2023-04-02 05:17:40,597 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:17:40,599 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2023-04-02 05:17:40,616 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:17:40,628 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 05:17:40,629 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-02 05:17:40,629 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [48879944] [2023-04-02 05:17:40,629 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [48879944] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-02 05:17:40,629 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-02 05:17:40,629 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2023-04-02 05:17:40,629 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2133911674] [2023-04-02 05:17:40,630 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-02 05:17:40,631 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-04-02 05:17:40,631 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-02 05:17:40,631 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-04-02 05:17:40,632 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2023-04-02 05:17:40,632 INFO L87 Difference]: Start difference. First operand 463 states and 634 transitions. Second operand has 9 states, 9 states have (on average 7.666666666666667) internal successors, (69), 3 states have internal predecessors, (69), 2 states have call successors, (11), 8 states have call predecessors, (11), 2 states have return successors, (9), 2 states have call predecessors, (9), 1 states have call successors, (9) [2023-04-02 05:17:41,793 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-02 05:17:41,793 INFO L93 Difference]: Finished difference Result 1257 states and 1766 transitions. [2023-04-02 05:17:41,793 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-04-02 05:17:41,794 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 7.666666666666667) internal successors, (69), 3 states have internal predecessors, (69), 2 states have call successors, (11), 8 states have call predecessors, (11), 2 states have return successors, (9), 2 states have call predecessors, (9), 1 states have call successors, (9) Word has length 89 [2023-04-02 05:17:41,794 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-02 05:17:41,802 INFO L225 Difference]: With dead ends: 1257 [2023-04-02 05:17:41,802 INFO L226 Difference]: Without dead ends: 843 [2023-04-02 05:17:41,807 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 25 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 50 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=114, Invalid=266, Unknown=0, NotChecked=0, Total=380 [2023-04-02 05:17:41,816 INFO L413 NwaCegarLoop]: 40 mSDtfsCounter, 402 mSDsluCounter, 53 mSDsCounter, 0 mSdLazyCounter, 589 mSolverCounterSat, 23 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 407 SdHoareTripleChecker+Valid, 93 SdHoareTripleChecker+Invalid, 612 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 23 IncrementalHoareTripleChecker+Valid, 589 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2023-04-02 05:17:41,818 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [407 Valid, 93 Invalid, 612 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [23 Valid, 589 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2023-04-02 05:17:41,819 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 843 states. [2023-04-02 05:17:41,977 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 843 to 823. [2023-04-02 05:17:41,979 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 823 states, 629 states have (on average 1.4069952305246423) internal successors, (885), 648 states have internal predecessors, (885), 88 states have call successors, (88), 88 states have call predecessors, (88), 105 states have return successors, (165), 87 states have call predecessors, (165), 87 states have call successors, (165) [2023-04-02 05:17:41,982 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 823 states to 823 states and 1138 transitions. [2023-04-02 05:17:41,982 INFO L78 Accepts]: Start accepts. Automaton has 823 states and 1138 transitions. Word has length 89 [2023-04-02 05:17:41,983 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-02 05:17:41,983 INFO L495 AbstractCegarLoop]: Abstraction has 823 states and 1138 transitions. [2023-04-02 05:17:41,983 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 7.666666666666667) internal successors, (69), 3 states have internal predecessors, (69), 2 states have call successors, (11), 8 states have call predecessors, (11), 2 states have return successors, (9), 2 states have call predecessors, (9), 1 states have call successors, (9) [2023-04-02 05:17:41,983 INFO L276 IsEmpty]: Start isEmpty. Operand 823 states and 1138 transitions. [2023-04-02 05:17:41,984 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 90 [2023-04-02 05:17:41,985 INFO L187 NwaCegarLoop]: Found error trace [2023-04-02 05:17:41,985 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] [2023-04-02 05:17:41,985 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-04-02 05:17:41,985 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-02 05:17:41,985 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-02 05:17:41,985 INFO L85 PathProgramCache]: Analyzing trace with hash -818384112, now seen corresponding path program 1 times [2023-04-02 05:17:41,986 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-02 05:17:41,986 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [992251131] [2023-04-02 05:17:41,986 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 05:17:41,986 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-02 05:17:42,026 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:17:42,378 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-02 05:17:42,381 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:17:42,385 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2023-04-02 05:17:42,388 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:17:42,482 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2023-04-02 05:17:42,484 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:17:42,500 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2023-04-02 05:17:42,503 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:17:42,535 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2023-04-02 05:17:42,538 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:17:42,573 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2023-04-02 05:17:42,575 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:17:42,620 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2023-04-02 05:17:42,622 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:17:42,665 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2023-04-02 05:17:42,668 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:17:42,690 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2023-04-02 05:17:42,692 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:17:42,710 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 05:17:42,711 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-02 05:17:42,711 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [992251131] [2023-04-02 05:17:42,711 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [992251131] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-02 05:17:42,711 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-02 05:17:42,711 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [19] imperfect sequences [] total 19 [2023-04-02 05:17:42,711 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1711939534] [2023-04-02 05:17:42,712 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-02 05:17:42,712 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2023-04-02 05:17:42,712 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-02 05:17:42,713 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2023-04-02 05:17:42,713 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=50, Invalid=292, Unknown=0, NotChecked=0, Total=342 [2023-04-02 05:17:42,713 INFO L87 Difference]: Start difference. First operand 823 states and 1138 transitions. Second operand has 19 states, 19 states have (on average 3.6315789473684212) internal successors, (69), 13 states have internal predecessors, (69), 3 states have call successors, (11), 8 states have call predecessors, (11), 8 states have return successors, (9), 3 states have call predecessors, (9), 2 states have call successors, (9) [2023-04-02 05:17:52,119 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-02 05:17:52,120 INFO L93 Difference]: Finished difference Result 3248 states and 4613 transitions. [2023-04-02 05:17:52,120 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 119 states. [2023-04-02 05:17:52,120 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 3.6315789473684212) internal successors, (69), 13 states have internal predecessors, (69), 3 states have call successors, (11), 8 states have call predecessors, (11), 8 states have return successors, (9), 3 states have call predecessors, (9), 2 states have call successors, (9) Word has length 89 [2023-04-02 05:17:52,121 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-02 05:17:52,131 INFO L225 Difference]: With dead ends: 3248 [2023-04-02 05:17:52,132 INFO L226 Difference]: Without dead ends: 2474 [2023-04-02 05:17:52,139 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 159 GetRequests, 28 SyntacticMatches, 1 SemanticMatches, 130 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6385 ImplicationChecksByTransitivity, 6.5s TimeCoverageRelationStatistics Valid=2787, Invalid=14505, Unknown=0, NotChecked=0, Total=17292 [2023-04-02 05:17:52,140 INFO L413 NwaCegarLoop]: 61 mSDtfsCounter, 3325 mSDsluCounter, 222 mSDsCounter, 0 mSdLazyCounter, 3248 mSolverCounterSat, 472 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3338 SdHoareTripleChecker+Valid, 283 SdHoareTripleChecker+Invalid, 3720 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 472 IncrementalHoareTripleChecker+Valid, 3248 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.6s IncrementalHoareTripleChecker+Time [2023-04-02 05:17:52,140 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3338 Valid, 283 Invalid, 3720 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [472 Valid, 3248 Invalid, 0 Unknown, 0 Unchecked, 2.6s Time] [2023-04-02 05:17:52,143 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2474 states. [2023-04-02 05:17:52,518 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2474 to 2389. [2023-04-02 05:17:52,523 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2389 states, 1828 states have (on average 1.438730853391685) internal successors, (2630), 1866 states have internal predecessors, (2630), 262 states have call successors, (262), 262 states have call predecessors, (262), 298 states have return successors, (514), 261 states have call predecessors, (514), 261 states have call successors, (514) [2023-04-02 05:17:52,533 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2389 states to 2389 states and 3406 transitions. [2023-04-02 05:17:52,534 INFO L78 Accepts]: Start accepts. Automaton has 2389 states and 3406 transitions. Word has length 89 [2023-04-02 05:17:52,534 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-02 05:17:52,534 INFO L495 AbstractCegarLoop]: Abstraction has 2389 states and 3406 transitions. [2023-04-02 05:17:52,534 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 3.6315789473684212) internal successors, (69), 13 states have internal predecessors, (69), 3 states have call successors, (11), 8 states have call predecessors, (11), 8 states have return successors, (9), 3 states have call predecessors, (9), 2 states have call successors, (9) [2023-04-02 05:17:52,534 INFO L276 IsEmpty]: Start isEmpty. Operand 2389 states and 3406 transitions. [2023-04-02 05:17:52,536 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 91 [2023-04-02 05:17:52,536 INFO L187 NwaCegarLoop]: Found error trace [2023-04-02 05:17:52,536 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] [2023-04-02 05:17:52,536 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-04-02 05:17:52,537 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-02 05:17:52,537 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-02 05:17:52,537 INFO L85 PathProgramCache]: Analyzing trace with hash 930305436, now seen corresponding path program 1 times [2023-04-02 05:17:52,537 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-02 05:17:52,537 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [470760364] [2023-04-02 05:17:52,538 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 05:17:52,538 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-02 05:17:52,573 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:17:52,766 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-02 05:17:52,770 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:17:52,774 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2023-04-02 05:17:52,777 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:17:52,796 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2023-04-02 05:17:52,800 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:17:52,812 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2023-04-02 05:17:52,826 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:17:52,853 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2023-04-02 05:17:52,855 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:17:52,868 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2023-04-02 05:17:52,870 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:17:52,884 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2023-04-02 05:17:52,886 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:17:52,900 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2023-04-02 05:17:52,902 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:17:52,905 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2023-04-02 05:17:52,906 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:17:52,918 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 05:17:52,918 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-02 05:17:52,919 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [470760364] [2023-04-02 05:17:52,919 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [470760364] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-02 05:17:52,919 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-02 05:17:52,919 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2023-04-02 05:17:52,919 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1678891696] [2023-04-02 05:17:52,919 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-02 05:17:52,930 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2023-04-02 05:17:52,930 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-02 05:17:52,938 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2023-04-02 05:17:52,938 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2023-04-02 05:17:52,939 INFO L87 Difference]: Start difference. First operand 2389 states and 3406 transitions. Second operand has 11 states, 11 states have (on average 6.363636363636363) internal successors, (70), 5 states have internal predecessors, (70), 3 states have call successors, (11), 8 states have call predecessors, (11), 4 states have return successors, (9), 3 states have call predecessors, (9), 2 states have call successors, (9) [2023-04-02 05:17:54,792 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-02 05:17:54,793 INFO L93 Difference]: Finished difference Result 5627 states and 8070 transitions. [2023-04-02 05:17:54,793 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2023-04-02 05:17:54,794 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 6.363636363636363) internal successors, (70), 5 states have internal predecessors, (70), 3 states have call successors, (11), 8 states have call predecessors, (11), 4 states have return successors, (9), 3 states have call predecessors, (9), 2 states have call successors, (9) Word has length 90 [2023-04-02 05:17:54,794 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-02 05:17:54,808 INFO L225 Difference]: With dead ends: 5627 [2023-04-02 05:17:54,808 INFO L226 Difference]: Without dead ends: 3287 [2023-04-02 05:17:54,814 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 56 GetRequests, 29 SyntacticMatches, 0 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 158 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=208, Invalid=604, Unknown=0, NotChecked=0, Total=812 [2023-04-02 05:17:54,815 INFO L413 NwaCegarLoop]: 31 mSDtfsCounter, 942 mSDsluCounter, 66 mSDsCounter, 0 mSdLazyCounter, 746 mSolverCounterSat, 88 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 949 SdHoareTripleChecker+Valid, 97 SdHoareTripleChecker+Invalid, 834 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 88 IncrementalHoareTripleChecker+Valid, 746 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2023-04-02 05:17:54,815 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [949 Valid, 97 Invalid, 834 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [88 Valid, 746 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2023-04-02 05:17:54,818 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3287 states. [2023-04-02 05:17:55,388 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3287 to 3222. [2023-04-02 05:17:55,394 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3222 states, 2450 states have (on average 1.4293877551020409) internal successors, (3502), 2513 states have internal predecessors, (3502), 355 states have call successors, (355), 355 states have call predecessors, (355), 416 states have return successors, (710), 354 states have call predecessors, (710), 354 states have call successors, (710) [2023-04-02 05:17:55,406 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3222 states to 3222 states and 4567 transitions. [2023-04-02 05:17:55,407 INFO L78 Accepts]: Start accepts. Automaton has 3222 states and 4567 transitions. Word has length 90 [2023-04-02 05:17:55,408 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-02 05:17:55,409 INFO L495 AbstractCegarLoop]: Abstraction has 3222 states and 4567 transitions. [2023-04-02 05:17:55,409 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 6.363636363636363) internal successors, (70), 5 states have internal predecessors, (70), 3 states have call successors, (11), 8 states have call predecessors, (11), 4 states have return successors, (9), 3 states have call predecessors, (9), 2 states have call successors, (9) [2023-04-02 05:17:55,409 INFO L276 IsEmpty]: Start isEmpty. Operand 3222 states and 4567 transitions. [2023-04-02 05:17:55,415 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 91 [2023-04-02 05:17:55,415 INFO L187 NwaCegarLoop]: Found error trace [2023-04-02 05:17:55,415 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] [2023-04-02 05:17:55,415 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-04-02 05:17:55,416 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-02 05:17:55,416 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-02 05:17:55,416 INFO L85 PathProgramCache]: Analyzing trace with hash -1717236899, now seen corresponding path program 1 times [2023-04-02 05:17:55,416 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-02 05:17:55,416 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1460153404] [2023-04-02 05:17:55,417 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 05:17:55,417 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-02 05:17:55,438 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:17:55,792 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-02 05:17:55,801 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:17:55,804 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2023-04-02 05:17:55,807 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:17:55,849 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2023-04-02 05:17:55,851 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:17:55,870 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2023-04-02 05:17:55,872 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:17:55,891 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2023-04-02 05:17:55,892 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:17:55,915 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2023-04-02 05:17:55,918 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:17:55,939 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2023-04-02 05:17:55,942 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:17:55,964 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2023-04-02 05:17:55,966 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:17:55,968 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2023-04-02 05:17:55,970 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:17:56,008 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 05:17:56,009 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-02 05:17:56,009 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1460153404] [2023-04-02 05:17:56,009 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1460153404] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-02 05:17:56,009 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-02 05:17:56,009 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2023-04-02 05:17:56,009 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1307602003] [2023-04-02 05:17:56,009 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-02 05:17:56,010 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2023-04-02 05:17:56,010 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-02 05:17:56,010 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2023-04-02 05:17:56,011 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=268, Unknown=0, NotChecked=0, Total=306 [2023-04-02 05:17:56,011 INFO L87 Difference]: Start difference. First operand 3222 states and 4567 transitions. Second operand has 18 states, 16 states have (on average 4.375) internal successors, (70), 9 states have internal predecessors, (70), 3 states have call successors, (11), 8 states have call predecessors, (11), 3 states have return successors, (9), 3 states have call predecessors, (9), 2 states have call successors, (9) [2023-04-02 05:17:58,080 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-02 05:17:58,080 INFO L93 Difference]: Finished difference Result 3508 states and 5169 transitions. [2023-04-02 05:17:58,080 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2023-04-02 05:17:58,081 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 16 states have (on average 4.375) internal successors, (70), 9 states have internal predecessors, (70), 3 states have call successors, (11), 8 states have call predecessors, (11), 3 states have return successors, (9), 3 states have call predecessors, (9), 2 states have call successors, (9) Word has length 90 [2023-04-02 05:17:58,081 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-02 05:17:58,096 INFO L225 Difference]: With dead ends: 3508 [2023-04-02 05:17:58,096 INFO L226 Difference]: Without dead ends: 3506 [2023-04-02 05:17:58,098 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 63 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=167, Invalid=703, Unknown=0, NotChecked=0, Total=870 [2023-04-02 05:17:58,098 INFO L413 NwaCegarLoop]: 41 mSDtfsCounter, 286 mSDsluCounter, 262 mSDsCounter, 0 mSdLazyCounter, 1701 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 294 SdHoareTripleChecker+Valid, 303 SdHoareTripleChecker+Invalid, 1713 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 1701 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2023-04-02 05:17:58,098 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [294 Valid, 303 Invalid, 1713 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 1701 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2023-04-02 05:17:58,101 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3506 states. [2023-04-02 05:17:58,656 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3506 to 3267. [2023-04-02 05:17:58,662 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3267 states, 2480 states have (on average 1.4205645161290323) internal successors, (3523), 2548 states have internal predecessors, (3523), 360 states have call successors, (360), 360 states have call predecessors, (360), 426 states have return successors, (725), 359 states have call predecessors, (725), 359 states have call successors, (725) [2023-04-02 05:17:58,674 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3267 states to 3267 states and 4608 transitions. [2023-04-02 05:17:58,674 INFO L78 Accepts]: Start accepts. Automaton has 3267 states and 4608 transitions. Word has length 90 [2023-04-02 05:17:58,674 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-02 05:17:58,675 INFO L495 AbstractCegarLoop]: Abstraction has 3267 states and 4608 transitions. [2023-04-02 05:17:58,675 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 16 states have (on average 4.375) internal successors, (70), 9 states have internal predecessors, (70), 3 states have call successors, (11), 8 states have call predecessors, (11), 3 states have return successors, (9), 3 states have call predecessors, (9), 2 states have call successors, (9) [2023-04-02 05:17:58,675 INFO L276 IsEmpty]: Start isEmpty. Operand 3267 states and 4608 transitions. [2023-04-02 05:17:58,678 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2023-04-02 05:17:58,678 INFO L187 NwaCegarLoop]: Found error trace [2023-04-02 05:17:58,678 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] [2023-04-02 05:17:58,678 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-04-02 05:17:58,678 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-02 05:17:58,679 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-02 05:17:58,679 INFO L85 PathProgramCache]: Analyzing trace with hash 1132431712, now seen corresponding path program 1 times [2023-04-02 05:17:58,679 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-02 05:17:58,679 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1893233820] [2023-04-02 05:17:58,679 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 05:17:58,679 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-02 05:17:58,695 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:17:58,876 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-02 05:17:58,881 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:17:58,914 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2023-04-02 05:17:58,917 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:17:58,937 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2023-04-02 05:17:58,939 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:17:58,953 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2023-04-02 05:17:58,955 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:17:58,970 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2023-04-02 05:17:58,972 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:17:59,030 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2023-04-02 05:17:59,033 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:17:59,053 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2023-04-02 05:17:59,054 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:17:59,076 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2023-04-02 05:17:59,077 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:17:59,080 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2023-04-02 05:17:59,081 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:17:59,083 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-02 05:17:59,083 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-02 05:17:59,083 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1893233820] [2023-04-02 05:17:59,083 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1893233820] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-02 05:17:59,083 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-02 05:17:59,083 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2023-04-02 05:17:59,083 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1403150978] [2023-04-02 05:17:59,083 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-02 05:17:59,084 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2023-04-02 05:17:59,084 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-02 05:17:59,084 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2023-04-02 05:17:59,085 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=176, Unknown=0, NotChecked=0, Total=210 [2023-04-02 05:17:59,085 INFO L87 Difference]: Start difference. First operand 3267 states and 4608 transitions. Second operand has 15 states, 15 states have (on average 4.733333333333333) internal successors, (71), 9 states have internal predecessors, (71), 5 states have call successors, (11), 9 states have call predecessors, (11), 4 states have return successors, (9), 4 states have call predecessors, (9), 5 states have call successors, (9) [2023-04-02 05:18:01,811 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-02 05:18:01,812 INFO L93 Difference]: Finished difference Result 8351 states and 11785 transitions. [2023-04-02 05:18:01,813 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2023-04-02 05:18:01,814 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 4.733333333333333) internal successors, (71), 9 states have internal predecessors, (71), 5 states have call successors, (11), 9 states have call predecessors, (11), 4 states have return successors, (9), 4 states have call predecessors, (9), 5 states have call successors, (9) Word has length 91 [2023-04-02 05:18:01,814 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-02 05:18:01,838 INFO L225 Difference]: With dead ends: 8351 [2023-04-02 05:18:01,839 INFO L226 Difference]: Without dead ends: 5133 [2023-04-02 05:18:01,847 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 137 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=292, Invalid=830, Unknown=0, NotChecked=0, Total=1122 [2023-04-02 05:18:01,848 INFO L413 NwaCegarLoop]: 18 mSDtfsCounter, 998 mSDsluCounter, 49 mSDsCounter, 0 mSdLazyCounter, 766 mSolverCounterSat, 124 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 998 SdHoareTripleChecker+Valid, 67 SdHoareTripleChecker+Invalid, 890 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 124 IncrementalHoareTripleChecker+Valid, 766 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2023-04-02 05:18:01,849 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [998 Valid, 67 Invalid, 890 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [124 Valid, 766 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2023-04-02 05:18:01,854 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5133 states. [2023-04-02 05:18:02,456 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5133 to 3344. [2023-04-02 05:18:02,462 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3344 states, 2534 states have (on average 1.4191002367797947) internal successors, (3596), 2611 states have internal predecessors, (3596), 367 states have call successors, (367), 367 states have call predecessors, (367), 442 states have return successors, (746), 365 states have call predecessors, (746), 366 states have call successors, (746) [2023-04-02 05:18:02,470 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3344 states to 3344 states and 4709 transitions. [2023-04-02 05:18:02,471 INFO L78 Accepts]: Start accepts. Automaton has 3344 states and 4709 transitions. Word has length 91 [2023-04-02 05:18:02,471 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-02 05:18:02,471 INFO L495 AbstractCegarLoop]: Abstraction has 3344 states and 4709 transitions. [2023-04-02 05:18:02,472 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 4.733333333333333) internal successors, (71), 9 states have internal predecessors, (71), 5 states have call successors, (11), 9 states have call predecessors, (11), 4 states have return successors, (9), 4 states have call predecessors, (9), 5 states have call successors, (9) [2023-04-02 05:18:02,472 INFO L276 IsEmpty]: Start isEmpty. Operand 3344 states and 4709 transitions. [2023-04-02 05:18:02,474 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2023-04-02 05:18:02,474 INFO L187 NwaCegarLoop]: Found error trace [2023-04-02 05:18:02,474 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] [2023-04-02 05:18:02,474 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-04-02 05:18:02,475 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-02 05:18:02,475 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-02 05:18:02,475 INFO L85 PathProgramCache]: Analyzing trace with hash -1061528752, now seen corresponding path program 1 times [2023-04-02 05:18:02,475 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-02 05:18:02,476 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1854992065] [2023-04-02 05:18:02,476 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 05:18:02,476 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-02 05:18:02,493 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:18:02,657 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-02 05:18:02,661 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:18:02,670 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2023-04-02 05:18:02,672 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:18:02,687 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2023-04-02 05:18:02,688 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:18:02,701 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2023-04-02 05:18:02,705 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:18:02,719 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2023-04-02 05:18:02,722 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:18:02,740 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2023-04-02 05:18:02,742 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:18:02,807 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2023-04-02 05:18:02,808 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:18:02,830 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2023-04-02 05:18:02,833 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:18:02,835 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2023-04-02 05:18:02,835 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:18:02,836 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 05:18:02,837 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-02 05:18:02,837 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1854992065] [2023-04-02 05:18:02,837 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1854992065] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-02 05:18:02,837 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-02 05:18:02,837 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2023-04-02 05:18:02,837 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1026555485] [2023-04-02 05:18:02,837 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-02 05:18:02,838 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2023-04-02 05:18:02,838 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-02 05:18:02,838 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2023-04-02 05:18:02,839 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=176, Unknown=0, NotChecked=0, Total=210 [2023-04-02 05:18:02,839 INFO L87 Difference]: Start difference. First operand 3344 states and 4709 transitions. Second operand has 15 states, 15 states have (on average 4.733333333333333) internal successors, (71), 9 states have internal predecessors, (71), 5 states have call successors, (11), 9 states have call predecessors, (11), 4 states have return successors, (9), 4 states have call predecessors, (9), 5 states have call successors, (9) [2023-04-02 05:18:05,402 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-02 05:18:05,403 INFO L93 Difference]: Finished difference Result 8020 states and 11244 transitions. [2023-04-02 05:18:05,404 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2023-04-02 05:18:05,404 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 4.733333333333333) internal successors, (71), 9 states have internal predecessors, (71), 5 states have call successors, (11), 9 states have call predecessors, (11), 4 states have return successors, (9), 4 states have call predecessors, (9), 5 states have call successors, (9) Word has length 91 [2023-04-02 05:18:05,404 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-02 05:18:05,425 INFO L225 Difference]: With dead ends: 8020 [2023-04-02 05:18:05,425 INFO L226 Difference]: Without dead ends: 4739 [2023-04-02 05:18:05,433 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 138 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=292, Invalid=830, Unknown=0, NotChecked=0, Total=1122 [2023-04-02 05:18:05,435 INFO L413 NwaCegarLoop]: 18 mSDtfsCounter, 1063 mSDsluCounter, 48 mSDsCounter, 0 mSdLazyCounter, 744 mSolverCounterSat, 137 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1063 SdHoareTripleChecker+Valid, 66 SdHoareTripleChecker+Invalid, 881 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 137 IncrementalHoareTripleChecker+Valid, 744 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2023-04-02 05:18:05,436 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1063 Valid, 66 Invalid, 881 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [137 Valid, 744 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2023-04-02 05:18:05,440 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4739 states. [2023-04-02 05:18:06,108 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4739 to 3407. [2023-04-02 05:18:06,114 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3407 states, 2581 states have (on average 1.418442464161178) internal successors, (3661), 2662 states have internal predecessors, (3661), 373 states have call successors, (373), 373 states have call predecessors, (373), 452 states have return successors, (758), 371 states have call predecessors, (758), 372 states have call successors, (758) [2023-04-02 05:18:06,122 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3407 states to 3407 states and 4792 transitions. [2023-04-02 05:18:06,123 INFO L78 Accepts]: Start accepts. Automaton has 3407 states and 4792 transitions. Word has length 91 [2023-04-02 05:18:06,123 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-02 05:18:06,124 INFO L495 AbstractCegarLoop]: Abstraction has 3407 states and 4792 transitions. [2023-04-02 05:18:06,124 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 4.733333333333333) internal successors, (71), 9 states have internal predecessors, (71), 5 states have call successors, (11), 9 states have call predecessors, (11), 4 states have return successors, (9), 4 states have call predecessors, (9), 5 states have call successors, (9) [2023-04-02 05:18:06,124 INFO L276 IsEmpty]: Start isEmpty. Operand 3407 states and 4792 transitions. [2023-04-02 05:18:06,126 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2023-04-02 05:18:06,126 INFO L187 NwaCegarLoop]: Found error trace [2023-04-02 05:18:06,126 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] [2023-04-02 05:18:06,127 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-04-02 05:18:06,127 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-02 05:18:06,127 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-02 05:18:06,127 INFO L85 PathProgramCache]: Analyzing trace with hash 797986400, now seen corresponding path program 1 times [2023-04-02 05:18:06,127 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-02 05:18:06,127 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [181354638] [2023-04-02 05:18:06,127 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 05:18:06,128 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-02 05:18:06,147 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:18:06,323 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-02 05:18:06,327 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:18:06,336 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2023-04-02 05:18:06,338 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:18:06,355 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2023-04-02 05:18:06,356 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:18:06,369 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2023-04-02 05:18:06,381 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:18:06,397 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2023-04-02 05:18:06,399 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:18:06,414 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2023-04-02 05:18:06,416 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:18:06,432 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2023-04-02 05:18:06,434 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:18:06,495 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2023-04-02 05:18:06,497 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:18:06,499 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2023-04-02 05:18:06,500 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:18:06,501 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 05:18:06,501 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-02 05:18:06,501 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [181354638] [2023-04-02 05:18:06,501 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [181354638] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-02 05:18:06,501 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-02 05:18:06,501 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2023-04-02 05:18:06,502 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1198785936] [2023-04-02 05:18:06,502 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-02 05:18:06,502 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2023-04-02 05:18:06,503 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-02 05:18:06,503 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2023-04-02 05:18:06,503 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=176, Unknown=0, NotChecked=0, Total=210 [2023-04-02 05:18:06,504 INFO L87 Difference]: Start difference. First operand 3407 states and 4792 transitions. Second operand has 15 states, 15 states have (on average 4.733333333333333) internal successors, (71), 9 states have internal predecessors, (71), 5 states have call successors, (11), 9 states have call predecessors, (11), 4 states have return successors, (9), 4 states have call predecessors, (9), 5 states have call successors, (9) [2023-04-02 05:18:09,048 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-02 05:18:09,048 INFO L93 Difference]: Finished difference Result 7614 states and 10626 transitions. [2023-04-02 05:18:09,048 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2023-04-02 05:18:09,049 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 4.733333333333333) internal successors, (71), 9 states have internal predecessors, (71), 5 states have call successors, (11), 9 states have call predecessors, (11), 4 states have return successors, (9), 4 states have call predecessors, (9), 5 states have call successors, (9) Word has length 91 [2023-04-02 05:18:09,049 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-02 05:18:09,068 INFO L225 Difference]: With dead ends: 7614 [2023-04-02 05:18:09,068 INFO L226 Difference]: Without dead ends: 4297 [2023-04-02 05:18:09,078 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 139 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=292, Invalid=830, Unknown=0, NotChecked=0, Total=1122 [2023-04-02 05:18:09,078 INFO L413 NwaCegarLoop]: 18 mSDtfsCounter, 974 mSDsluCounter, 49 mSDsCounter, 0 mSdLazyCounter, 782 mSolverCounterSat, 122 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 974 SdHoareTripleChecker+Valid, 67 SdHoareTripleChecker+Invalid, 904 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 122 IncrementalHoareTripleChecker+Valid, 782 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2023-04-02 05:18:09,079 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [974 Valid, 67 Invalid, 904 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [122 Valid, 782 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2023-04-02 05:18:09,083 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4297 states. [2023-04-02 05:18:09,633 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4297 to 3470. [2023-04-02 05:18:09,639 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3470 states, 2628 states have (on average 1.417808219178082) internal successors, (3726), 2713 states have internal predecessors, (3726), 379 states have call successors, (379), 379 states have call predecessors, (379), 462 states have return successors, (770), 377 states have call predecessors, (770), 378 states have call successors, (770) [2023-04-02 05:18:09,647 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3470 states to 3470 states and 4875 transitions. [2023-04-02 05:18:09,648 INFO L78 Accepts]: Start accepts. Automaton has 3470 states and 4875 transitions. Word has length 91 [2023-04-02 05:18:09,648 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-02 05:18:09,648 INFO L495 AbstractCegarLoop]: Abstraction has 3470 states and 4875 transitions. [2023-04-02 05:18:09,649 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 4.733333333333333) internal successors, (71), 9 states have internal predecessors, (71), 5 states have call successors, (11), 9 states have call predecessors, (11), 4 states have return successors, (9), 4 states have call predecessors, (9), 5 states have call successors, (9) [2023-04-02 05:18:09,649 INFO L276 IsEmpty]: Start isEmpty. Operand 3470 states and 4875 transitions. [2023-04-02 05:18:09,650 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2023-04-02 05:18:09,650 INFO L187 NwaCegarLoop]: Found error trace [2023-04-02 05:18:09,650 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] [2023-04-02 05:18:09,650 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2023-04-02 05:18:09,650 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-02 05:18:09,651 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-02 05:18:09,651 INFO L85 PathProgramCache]: Analyzing trace with hash 1097882576, now seen corresponding path program 1 times [2023-04-02 05:18:09,651 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-02 05:18:09,651 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [867816618] [2023-04-02 05:18:09,651 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 05:18:09,651 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-02 05:18:09,665 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:18:09,841 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-02 05:18:09,844 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:18:09,852 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2023-04-02 05:18:09,855 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:18:09,869 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2023-04-02 05:18:09,870 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:18:09,883 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2023-04-02 05:18:09,885 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:18:09,898 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2023-04-02 05:18:09,900 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:18:09,915 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2023-04-02 05:18:09,916 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:18:09,931 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2023-04-02 05:18:09,933 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:18:09,949 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2023-04-02 05:18:09,951 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:18:09,990 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2023-04-02 05:18:09,992 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:18:09,993 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 05:18:09,993 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-02 05:18:09,993 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [867816618] [2023-04-02 05:18:09,993 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [867816618] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-02 05:18:09,993 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-02 05:18:09,993 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2023-04-02 05:18:09,993 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [101730168] [2023-04-02 05:18:09,994 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-02 05:18:09,994 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2023-04-02 05:18:09,994 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-02 05:18:09,994 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2023-04-02 05:18:09,995 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=176, Unknown=0, NotChecked=0, Total=210 [2023-04-02 05:18:09,995 INFO L87 Difference]: Start difference. First operand 3470 states and 4875 transitions. Second operand has 15 states, 15 states have (on average 4.733333333333333) internal successors, (71), 9 states have internal predecessors, (71), 5 states have call successors, (11), 9 states have call predecessors, (11), 4 states have return successors, (9), 4 states have call predecessors, (9), 5 states have call successors, (9) [2023-04-02 05:18:12,236 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-02 05:18:12,236 INFO L93 Difference]: Finished difference Result 7208 states and 10008 transitions. [2023-04-02 05:18:12,237 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2023-04-02 05:18:12,237 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 4.733333333333333) internal successors, (71), 9 states have internal predecessors, (71), 5 states have call successors, (11), 9 states have call predecessors, (11), 4 states have return successors, (9), 4 states have call predecessors, (9), 5 states have call successors, (9) Word has length 91 [2023-04-02 05:18:12,237 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-02 05:18:12,250 INFO L225 Difference]: With dead ends: 7208 [2023-04-02 05:18:12,250 INFO L226 Difference]: Without dead ends: 3855 [2023-04-02 05:18:12,257 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 140 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=292, Invalid=830, Unknown=0, NotChecked=0, Total=1122 [2023-04-02 05:18:12,258 INFO L413 NwaCegarLoop]: 18 mSDtfsCounter, 1168 mSDsluCounter, 44 mSDsCounter, 0 mSdLazyCounter, 726 mSolverCounterSat, 149 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1168 SdHoareTripleChecker+Valid, 62 SdHoareTripleChecker+Invalid, 875 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 149 IncrementalHoareTripleChecker+Valid, 726 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2023-04-02 05:18:12,258 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1168 Valid, 62 Invalid, 875 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [149 Valid, 726 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2023-04-02 05:18:12,262 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3855 states. [2023-04-02 05:18:12,756 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3855 to 3497. [2023-04-02 05:18:12,761 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3497 states, 2649 states have (on average 1.4167610419026047) internal successors, (3753), 2734 states have internal predecessors, (3753), 382 states have call successors, (382), 382 states have call predecessors, (382), 465 states have return successors, (773), 380 states have call predecessors, (773), 381 states have call successors, (773) [2023-04-02 05:18:12,770 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3497 states to 3497 states and 4908 transitions. [2023-04-02 05:18:12,771 INFO L78 Accepts]: Start accepts. Automaton has 3497 states and 4908 transitions. Word has length 91 [2023-04-02 05:18:12,771 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-02 05:18:12,771 INFO L495 AbstractCegarLoop]: Abstraction has 3497 states and 4908 transitions. [2023-04-02 05:18:12,771 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 4.733333333333333) internal successors, (71), 9 states have internal predecessors, (71), 5 states have call successors, (11), 9 states have call predecessors, (11), 4 states have return successors, (9), 4 states have call predecessors, (9), 5 states have call successors, (9) [2023-04-02 05:18:12,771 INFO L276 IsEmpty]: Start isEmpty. Operand 3497 states and 4908 transitions. [2023-04-02 05:18:12,772 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2023-04-02 05:18:12,772 INFO L187 NwaCegarLoop]: Found error trace [2023-04-02 05:18:12,773 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] [2023-04-02 05:18:12,773 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2023-04-02 05:18:12,773 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-02 05:18:12,773 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-02 05:18:12,773 INFO L85 PathProgramCache]: Analyzing trace with hash 196699851, now seen corresponding path program 1 times [2023-04-02 05:18:12,773 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-02 05:18:12,773 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2127656760] [2023-04-02 05:18:12,774 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 05:18:12,774 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-02 05:18:12,789 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:18:12,961 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-02 05:18:12,965 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:18:12,973 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2023-04-02 05:18:12,975 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:18:12,989 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2023-04-02 05:18:12,990 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:18:13,003 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2023-04-02 05:18:13,005 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:18:13,055 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2023-04-02 05:18:13,056 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:18:13,076 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2023-04-02 05:18:13,078 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:18:13,097 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2023-04-02 05:18:13,099 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:18:13,119 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2023-04-02 05:18:13,122 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:18:13,124 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2023-04-02 05:18:13,125 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:18:13,126 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 05:18:13,126 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-02 05:18:13,126 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2127656760] [2023-04-02 05:18:13,126 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2127656760] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-02 05:18:13,126 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-02 05:18:13,126 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2023-04-02 05:18:13,126 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [893108899] [2023-04-02 05:18:13,127 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-02 05:18:13,127 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2023-04-02 05:18:13,127 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-02 05:18:13,127 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2023-04-02 05:18:13,128 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=176, Unknown=0, NotChecked=0, Total=210 [2023-04-02 05:18:13,128 INFO L87 Difference]: Start difference. First operand 3497 states and 4908 transitions. Second operand has 15 states, 15 states have (on average 4.866666666666666) internal successors, (73), 9 states have internal predecessors, (73), 5 states have call successors, (11), 9 states have call predecessors, (11), 4 states have return successors, (9), 3 states have call predecessors, (9), 5 states have call successors, (9) [2023-04-02 05:18:15,775 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-02 05:18:15,776 INFO L93 Difference]: Finished difference Result 6739 states and 9530 transitions. [2023-04-02 05:18:15,776 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2023-04-02 05:18:15,776 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 4.866666666666666) internal successors, (73), 9 states have internal predecessors, (73), 5 states have call successors, (11), 9 states have call predecessors, (11), 4 states have return successors, (9), 3 states have call predecessors, (9), 5 states have call successors, (9) Word has length 93 [2023-04-02 05:18:15,776 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-02 05:18:15,791 INFO L225 Difference]: With dead ends: 6739 [2023-04-02 05:18:15,791 INFO L226 Difference]: Without dead ends: 4242 [2023-04-02 05:18:15,797 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 136 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=292, Invalid=830, Unknown=0, NotChecked=0, Total=1122 [2023-04-02 05:18:15,798 INFO L413 NwaCegarLoop]: 18 mSDtfsCounter, 1035 mSDsluCounter, 45 mSDsCounter, 0 mSdLazyCounter, 765 mSolverCounterSat, 126 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1035 SdHoareTripleChecker+Valid, 63 SdHoareTripleChecker+Invalid, 891 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 126 IncrementalHoareTripleChecker+Valid, 765 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2023-04-02 05:18:15,798 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1035 Valid, 63 Invalid, 891 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [126 Valid, 765 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2023-04-02 05:18:15,802 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4242 states. [2023-04-02 05:18:16,341 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4242 to 3781. [2023-04-02 05:18:16,346 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3781 states, 2870 states have (on average 1.4278745644599302) internal successors, (4098), 2960 states have internal predecessors, (4098), 411 states have call successors, (411), 411 states have call predecessors, (411), 499 states have return successors, (830), 409 states have call predecessors, (830), 410 states have call successors, (830) [2023-04-02 05:18:16,355 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3781 states to 3781 states and 5339 transitions. [2023-04-02 05:18:16,355 INFO L78 Accepts]: Start accepts. Automaton has 3781 states and 5339 transitions. Word has length 93 [2023-04-02 05:18:16,355 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-02 05:18:16,355 INFO L495 AbstractCegarLoop]: Abstraction has 3781 states and 5339 transitions. [2023-04-02 05:18:16,356 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 4.866666666666666) internal successors, (73), 9 states have internal predecessors, (73), 5 states have call successors, (11), 9 states have call predecessors, (11), 4 states have return successors, (9), 3 states have call predecessors, (9), 5 states have call successors, (9) [2023-04-02 05:18:16,356 INFO L276 IsEmpty]: Start isEmpty. Operand 3781 states and 5339 transitions. [2023-04-02 05:18:16,356 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2023-04-02 05:18:16,356 INFO L187 NwaCegarLoop]: Found error trace [2023-04-02 05:18:16,357 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 05:18:16,357 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2023-04-02 05:18:16,357 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-02 05:18:16,357 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-02 05:18:16,357 INFO L85 PathProgramCache]: Analyzing trace with hash -557662445, now seen corresponding path program 1 times [2023-04-02 05:18:16,357 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-02 05:18:16,357 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1999089062] [2023-04-02 05:18:16,358 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 05:18:16,358 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-02 05:18:16,380 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:18:16,557 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-02 05:18:16,560 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:18:16,563 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2023-04-02 05:18:16,565 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:18:16,575 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2023-04-02 05:18:16,576 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:18:16,587 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2023-04-02 05:18:16,590 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:18:16,630 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2023-04-02 05:18:16,632 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:18:16,647 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2023-04-02 05:18:16,648 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:18:16,663 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2023-04-02 05:18:16,666 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:18:16,682 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2023-04-02 05:18:16,683 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:18:16,685 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2023-04-02 05:18:16,686 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:18:16,687 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-02 05:18:16,687 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-02 05:18:16,688 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1999089062] [2023-04-02 05:18:16,688 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1999089062] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-02 05:18:16,688 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-02 05:18:16,688 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2023-04-02 05:18:16,688 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [334901610] [2023-04-02 05:18:16,688 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-02 05:18:16,688 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2023-04-02 05:18:16,688 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-02 05:18:16,689 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2023-04-02 05:18:16,689 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2023-04-02 05:18:16,689 INFO L87 Difference]: Start difference. First operand 3781 states and 5339 transitions. Second operand has 11 states, 11 states have (on average 6.7272727272727275) internal successors, (74), 5 states have internal predecessors, (74), 3 states have call successors, (11), 8 states have call predecessors, (11), 3 states have return successors, (9), 3 states have call predecessors, (9), 3 states have call successors, (9) [2023-04-02 05:18:18,418 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-02 05:18:18,419 INFO L93 Difference]: Finished difference Result 7451 states and 10559 transitions. [2023-04-02 05:18:18,419 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2023-04-02 05:18:18,419 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 6.7272727272727275) internal successors, (74), 5 states have internal predecessors, (74), 3 states have call successors, (11), 8 states have call predecessors, (11), 3 states have return successors, (9), 3 states have call predecessors, (9), 3 states have call successors, (9) Word has length 94 [2023-04-02 05:18:18,420 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-02 05:18:18,442 INFO L225 Difference]: With dead ends: 7451 [2023-04-02 05:18:18,443 INFO L226 Difference]: Without dead ends: 4672 [2023-04-02 05:18:18,450 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 78 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=154, Invalid=398, Unknown=0, NotChecked=0, Total=552 [2023-04-02 05:18:18,451 INFO L413 NwaCegarLoop]: 36 mSDtfsCounter, 709 mSDsluCounter, 59 mSDsCounter, 0 mSdLazyCounter, 683 mSolverCounterSat, 69 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 715 SdHoareTripleChecker+Valid, 95 SdHoareTripleChecker+Invalid, 752 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 69 IncrementalHoareTripleChecker+Valid, 683 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2023-04-02 05:18:18,451 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [715 Valid, 95 Invalid, 752 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [69 Valid, 683 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2023-04-02 05:18:18,456 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4672 states. [2023-04-02 05:18:19,170 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4672 to 4648. [2023-04-02 05:18:19,175 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4648 states, 3516 states have (on average 1.4061433447098977) internal successors, (4944), 3599 states have internal predecessors, (4944), 525 states have call successors, (525), 525 states have call predecessors, (525), 606 states have return successors, (1017), 523 states have call predecessors, (1017), 524 states have call successors, (1017) [2023-04-02 05:18:19,186 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4648 states to 4648 states and 6486 transitions. [2023-04-02 05:18:19,186 INFO L78 Accepts]: Start accepts. Automaton has 4648 states and 6486 transitions. Word has length 94 [2023-04-02 05:18:19,187 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-02 05:18:19,187 INFO L495 AbstractCegarLoop]: Abstraction has 4648 states and 6486 transitions. [2023-04-02 05:18:19,187 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 6.7272727272727275) internal successors, (74), 5 states have internal predecessors, (74), 3 states have call successors, (11), 8 states have call predecessors, (11), 3 states have return successors, (9), 3 states have call predecessors, (9), 3 states have call successors, (9) [2023-04-02 05:18:19,188 INFO L276 IsEmpty]: Start isEmpty. Operand 4648 states and 6486 transitions. [2023-04-02 05:18:19,190 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 134 [2023-04-02 05:18:19,190 INFO L187 NwaCegarLoop]: Found error trace [2023-04-02 05:18:19,191 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2023-04-02 05:18:19,191 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2023-04-02 05:18:19,191 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-02 05:18:19,191 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-02 05:18:19,191 INFO L85 PathProgramCache]: Analyzing trace with hash -1336343266, now seen corresponding path program 1 times [2023-04-02 05:18:19,192 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-02 05:18:19,192 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1652459609] [2023-04-02 05:18:19,192 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 05:18:19,192 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-02 05:18:19,213 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:18:19,574 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-02 05:18:19,576 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:18:19,579 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2023-04-02 05:18:19,581 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:18:19,590 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2023-04-02 05:18:19,591 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:18:19,603 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2023-04-02 05:18:19,606 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:18:19,618 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2023-04-02 05:18:19,620 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:18:19,644 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2023-04-02 05:18:19,646 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:18:19,661 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2023-04-02 05:18:19,662 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:18:19,678 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2023-04-02 05:18:19,680 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:18:19,682 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2023-04-02 05:18:19,683 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:18:19,695 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2023-04-02 05:18:19,697 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:18:19,699 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2023-04-02 05:18:19,700 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:18:19,716 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 97 [2023-04-02 05:18:19,717 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:18:19,729 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 106 [2023-04-02 05:18:19,731 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:18:19,749 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 111 [2023-04-02 05:18:19,751 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:18:19,769 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 116 [2023-04-02 05:18:19,772 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:18:19,790 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 122 [2023-04-02 05:18:19,791 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:18:19,808 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 21 proven. 9 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2023-04-02 05:18:19,808 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-02 05:18:19,808 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1652459609] [2023-04-02 05:18:19,808 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1652459609] provided 0 perfect and 1 imperfect interpolant sequences [2023-04-02 05:18:19,809 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1505255191] [2023-04-02 05:18:19,809 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 05:18:19,809 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-02 05:18:19,809 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-04-02 05:18:19,812 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-04-02 05:18:19,832 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-04-02 05:18:20,033 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:18:20,057 INFO L262 TraceCheckSpWp]: Trace formula consists of 929 conjuncts, 22 conjunts are in the unsatisfiable core [2023-04-02 05:18:20,067 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-04-02 05:18:21,053 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 28 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2023-04-02 05:18:21,054 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-04-02 05:18:21,054 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1505255191] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-02 05:18:21,054 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-04-02 05:18:21,054 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [19] total 31 [2023-04-02 05:18:21,054 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1681213462] [2023-04-02 05:18:21,054 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-02 05:18:21,055 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2023-04-02 05:18:21,055 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-02 05:18:21,056 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2023-04-02 05:18:21,056 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=105, Invalid=825, Unknown=0, NotChecked=0, Total=930 [2023-04-02 05:18:21,056 INFO L87 Difference]: Start difference. First operand 4648 states and 6486 transitions. Second operand has 14 states, 14 states have (on average 6.714285714285714) internal successors, (94), 14 states have internal predecessors, (94), 4 states have call successors, (16), 11 states have call predecessors, (16), 11 states have return successors, (15), 4 states have call predecessors, (15), 3 states have call successors, (15) [2023-04-02 05:18:23,161 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-02 05:18:23,161 INFO L93 Difference]: Finished difference Result 9235 states and 12953 transitions. [2023-04-02 05:18:23,162 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-04-02 05:18:23,162 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 6.714285714285714) internal successors, (94), 14 states have internal predecessors, (94), 4 states have call successors, (16), 11 states have call predecessors, (16), 11 states have return successors, (15), 4 states have call predecessors, (15), 3 states have call successors, (15) Word has length 133 [2023-04-02 05:18:23,162 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-02 05:18:23,183 INFO L225 Difference]: With dead ends: 9235 [2023-04-02 05:18:23,184 INFO L226 Difference]: Without dead ends: 7432 [2023-04-02 05:18:23,190 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 181 GetRequests, 150 SyntacticMatches, 0 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 239 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=132, Invalid=924, Unknown=0, NotChecked=0, Total=1056 [2023-04-02 05:18:23,191 INFO L413 NwaCegarLoop]: 55 mSDtfsCounter, 951 mSDsluCounter, 541 mSDsCounter, 0 mSdLazyCounter, 1835 mSolverCounterSat, 76 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 957 SdHoareTripleChecker+Valid, 596 SdHoareTripleChecker+Invalid, 1911 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 76 IncrementalHoareTripleChecker+Valid, 1835 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2023-04-02 05:18:23,191 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [957 Valid, 596 Invalid, 1911 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [76 Valid, 1835 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2023-04-02 05:18:23,198 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7432 states. [2023-04-02 05:18:24,365 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7432 to 7422. [2023-04-02 05:18:24,372 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7422 states, 5618 states have (on average 1.4106443574225702) internal successors, (7925), 5741 states have internal predecessors, (7925), 841 states have call successors, (841), 841 states have call predecessors, (841), 962 states have return successors, (1640), 839 states have call predecessors, (1640), 840 states have call successors, (1640) [2023-04-02 05:18:24,392 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7422 states to 7422 states and 10406 transitions. [2023-04-02 05:18:24,393 INFO L78 Accepts]: Start accepts. Automaton has 7422 states and 10406 transitions. Word has length 133 [2023-04-02 05:18:24,394 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-02 05:18:24,394 INFO L495 AbstractCegarLoop]: Abstraction has 7422 states and 10406 transitions. [2023-04-02 05:18:24,394 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 6.714285714285714) internal successors, (94), 14 states have internal predecessors, (94), 4 states have call successors, (16), 11 states have call predecessors, (16), 11 states have return successors, (15), 4 states have call predecessors, (15), 3 states have call successors, (15) [2023-04-02 05:18:24,394 INFO L276 IsEmpty]: Start isEmpty. Operand 7422 states and 10406 transitions. [2023-04-02 05:18:24,397 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 134 [2023-04-02 05:18:24,397 INFO L187 NwaCegarLoop]: Found error trace [2023-04-02 05:18:24,397 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2023-04-02 05:18:24,406 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2023-04-02 05:18:24,603 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2023-04-02 05:18:24,603 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-02 05:18:24,604 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-02 05:18:24,604 INFO L85 PathProgramCache]: Analyzing trace with hash 764663566, now seen corresponding path program 1 times [2023-04-02 05:18:24,604 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-02 05:18:24,604 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1853977132] [2023-04-02 05:18:24,604 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 05:18:24,604 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-02 05:18:24,624 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:18:24,926 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-02 05:18:24,928 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:18:24,931 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2023-04-02 05:18:24,933 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:18:24,940 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2023-04-02 05:18:24,940 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:18:24,952 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2023-04-02 05:18:24,954 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:18:24,967 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2023-04-02 05:18:24,969 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:18:24,983 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2023-04-02 05:18:24,984 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:18:25,011 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2023-04-02 05:18:25,012 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:18:25,029 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2023-04-02 05:18:25,031 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:18:25,034 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2023-04-02 05:18:25,035 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:18:25,047 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2023-04-02 05:18:25,048 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:18:25,050 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2023-04-02 05:18:25,051 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:18:25,066 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 97 [2023-04-02 05:18:25,068 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:18:25,083 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 102 [2023-04-02 05:18:25,085 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:18:25,097 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 111 [2023-04-02 05:18:25,099 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:18:25,115 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 116 [2023-04-02 05:18:25,117 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:18:25,140 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 122 [2023-04-02 05:18:25,142 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:18:25,155 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 20 proven. 10 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2023-04-02 05:18:25,156 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-02 05:18:25,156 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1853977132] [2023-04-02 05:18:25,156 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1853977132] provided 0 perfect and 1 imperfect interpolant sequences [2023-04-02 05:18:25,156 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1012663369] [2023-04-02 05:18:25,156 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 05:18:25,156 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-02 05:18:25,156 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-04-02 05:18:25,157 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-04-02 05:18:25,160 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-04-02 05:18:25,326 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:18:25,351 INFO L262 TraceCheckSpWp]: Trace formula consists of 929 conjuncts, 22 conjunts are in the unsatisfiable core [2023-04-02 05:18:25,357 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-04-02 05:18:26,259 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 23 proven. 0 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2023-04-02 05:18:26,259 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-04-02 05:18:26,260 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1012663369] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-02 05:18:26,260 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-04-02 05:18:26,260 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [19] total 30 [2023-04-02 05:18:26,260 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [961482677] [2023-04-02 05:18:26,260 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-02 05:18:26,260 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2023-04-02 05:18:26,261 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-02 05:18:26,261 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2023-04-02 05:18:26,261 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=101, Invalid=769, Unknown=0, NotChecked=0, Total=870 [2023-04-02 05:18:26,262 INFO L87 Difference]: Start difference. First operand 7422 states and 10406 transitions. Second operand has 13 states, 13 states have (on average 7.0) internal successors, (91), 13 states have internal predecessors, (91), 4 states have call successors, (15), 10 states have call predecessors, (15), 10 states have return successors, (14), 4 states have call predecessors, (14), 3 states have call successors, (14) [2023-04-02 05:18:28,362 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-02 05:18:28,362 INFO L93 Difference]: Finished difference Result 11958 states and 16791 transitions. [2023-04-02 05:18:28,363 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-04-02 05:18:28,363 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 7.0) internal successors, (91), 13 states have internal predecessors, (91), 4 states have call successors, (15), 10 states have call predecessors, (15), 10 states have return successors, (14), 4 states have call predecessors, (14), 3 states have call successors, (14) Word has length 133 [2023-04-02 05:18:28,363 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-02 05:18:28,388 INFO L225 Difference]: With dead ends: 11958 [2023-04-02 05:18:28,388 INFO L226 Difference]: Without dead ends: 9150 [2023-04-02 05:18:28,395 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 181 GetRequests, 151 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 217 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=127, Invalid=865, Unknown=0, NotChecked=0, Total=992 [2023-04-02 05:18:28,396 INFO L413 NwaCegarLoop]: 52 mSDtfsCounter, 999 mSDsluCounter, 369 mSDsCounter, 0 mSdLazyCounter, 1495 mSolverCounterSat, 78 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1005 SdHoareTripleChecker+Valid, 421 SdHoareTripleChecker+Invalid, 1573 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 78 IncrementalHoareTripleChecker+Valid, 1495 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2023-04-02 05:18:28,396 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1005 Valid, 421 Invalid, 1573 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [78 Valid, 1495 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2023-04-02 05:18:28,404 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9150 states. [2023-04-02 05:18:29,880 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9150 to 9140. [2023-04-02 05:18:29,888 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9140 states, 6921 states have (on average 1.4115012281462216) internal successors, (9769), 7065 states have internal predecessors, (9769), 1038 states have call successors, (1038), 1038 states have call predecessors, (1038), 1180 states have return successors, (2027), 1036 states have call predecessors, (2027), 1037 states have call successors, (2027) [2023-04-02 05:18:29,913 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9140 states to 9140 states and 12834 transitions. [2023-04-02 05:18:29,914 INFO L78 Accepts]: Start accepts. Automaton has 9140 states and 12834 transitions. Word has length 133 [2023-04-02 05:18:29,914 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-02 05:18:29,914 INFO L495 AbstractCegarLoop]: Abstraction has 9140 states and 12834 transitions. [2023-04-02 05:18:29,914 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 7.0) internal successors, (91), 13 states have internal predecessors, (91), 4 states have call successors, (15), 10 states have call predecessors, (15), 10 states have return successors, (14), 4 states have call predecessors, (14), 3 states have call successors, (14) [2023-04-02 05:18:29,914 INFO L276 IsEmpty]: Start isEmpty. Operand 9140 states and 12834 transitions. [2023-04-02 05:18:29,917 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 134 [2023-04-02 05:18:29,917 INFO L187 NwaCegarLoop]: Found error trace [2023-04-02 05:18:29,917 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2023-04-02 05:18:29,925 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2023-04-02 05:18:30,124 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2023-04-02 05:18:30,124 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-02 05:18:30,124 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-02 05:18:30,124 INFO L85 PathProgramCache]: Analyzing trace with hash -1670788578, now seen corresponding path program 1 times [2023-04-02 05:18:30,125 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-02 05:18:30,125 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1348392260] [2023-04-02 05:18:30,125 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 05:18:30,125 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-02 05:18:30,144 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:18:30,447 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-02 05:18:30,449 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:18:30,452 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2023-04-02 05:18:30,454 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:18:30,460 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2023-04-02 05:18:30,460 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:18:30,472 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2023-04-02 05:18:30,474 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:18:30,485 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2023-04-02 05:18:30,487 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:18:30,500 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2023-04-02 05:18:30,501 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:18:30,515 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2023-04-02 05:18:30,517 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:18:30,549 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2023-04-02 05:18:30,551 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:18:30,553 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2023-04-02 05:18:30,554 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:18:30,565 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2023-04-02 05:18:30,567 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:18:30,568 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2023-04-02 05:18:30,569 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:18:30,585 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 97 [2023-04-02 05:18:30,587 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:18:30,603 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 102 [2023-04-02 05:18:30,605 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:18:30,621 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 107 [2023-04-02 05:18:30,623 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:18:30,635 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 116 [2023-04-02 05:18:30,637 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:18:30,654 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 122 [2023-04-02 05:18:30,655 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:18:30,669 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 19 proven. 11 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2023-04-02 05:18:30,670 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-02 05:18:30,670 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1348392260] [2023-04-02 05:18:30,670 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1348392260] provided 0 perfect and 1 imperfect interpolant sequences [2023-04-02 05:18:30,670 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [747865293] [2023-04-02 05:18:30,670 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 05:18:30,670 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-02 05:18:30,671 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-04-02 05:18:30,672 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-04-02 05:18:30,675 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-04-02 05:18:30,830 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:18:30,834 INFO L262 TraceCheckSpWp]: Trace formula consists of 929 conjuncts, 22 conjunts are in the unsatisfiable core [2023-04-02 05:18:30,839 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-04-02 05:18:31,597 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 18 proven. 0 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2023-04-02 05:18:31,598 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-04-02 05:18:31,598 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [747865293] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-02 05:18:31,599 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-04-02 05:18:31,599 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [19] total 29 [2023-04-02 05:18:31,599 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1161754417] [2023-04-02 05:18:31,599 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-02 05:18:31,599 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-04-02 05:18:31,600 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-02 05:18:31,602 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-04-02 05:18:31,603 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=96, Invalid=716, Unknown=0, NotChecked=0, Total=812 [2023-04-02 05:18:31,603 INFO L87 Difference]: Start difference. First operand 9140 states and 12834 transitions. Second operand has 12 states, 12 states have (on average 7.333333333333333) internal successors, (88), 12 states have internal predecessors, (88), 4 states have call successors, (14), 9 states have call predecessors, (14), 9 states have return successors, (13), 4 states have call predecessors, (13), 3 states have call successors, (13) [2023-04-02 05:18:33,729 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-02 05:18:33,729 INFO L93 Difference]: Finished difference Result 14661 states and 20600 transitions. [2023-04-02 05:18:33,730 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-04-02 05:18:33,730 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 7.333333333333333) internal successors, (88), 12 states have internal predecessors, (88), 4 states have call successors, (14), 9 states have call predecessors, (14), 9 states have return successors, (13), 4 states have call predecessors, (13), 3 states have call successors, (13) Word has length 133 [2023-04-02 05:18:33,730 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-02 05:18:33,759 INFO L225 Difference]: With dead ends: 14661 [2023-04-02 05:18:33,759 INFO L226 Difference]: Without dead ends: 9858 [2023-04-02 05:18:33,771 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 180 GetRequests, 152 SyntacticMatches, 0 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 195 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=109, Invalid=761, Unknown=0, NotChecked=0, Total=870 [2023-04-02 05:18:33,772 INFO L413 NwaCegarLoop]: 35 mSDtfsCounter, 801 mSDsluCounter, 478 mSDsCounter, 0 mSdLazyCounter, 1255 mSolverCounterSat, 65 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 808 SdHoareTripleChecker+Valid, 513 SdHoareTripleChecker+Invalid, 1320 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 65 IncrementalHoareTripleChecker+Valid, 1255 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2023-04-02 05:18:33,772 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [808 Valid, 513 Invalid, 1320 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [65 Valid, 1255 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2023-04-02 05:18:33,779 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9858 states. [2023-04-02 05:18:35,389 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9858 to 9850. [2023-04-02 05:18:35,399 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9850 states, 7461 states have (on average 1.4110709020238574) internal successors, (10528), 7611 states have internal predecessors, (10528), 1120 states have call successors, (1120), 1120 states have call predecessors, (1120), 1268 states have return successors, (2186), 1118 states have call predecessors, (2186), 1119 states have call successors, (2186) [2023-04-02 05:18:35,425 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9850 states to 9850 states and 13834 transitions. [2023-04-02 05:18:35,427 INFO L78 Accepts]: Start accepts. Automaton has 9850 states and 13834 transitions. Word has length 133 [2023-04-02 05:18:35,427 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-02 05:18:35,427 INFO L495 AbstractCegarLoop]: Abstraction has 9850 states and 13834 transitions. [2023-04-02 05:18:35,427 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 7.333333333333333) internal successors, (88), 12 states have internal predecessors, (88), 4 states have call successors, (14), 9 states have call predecessors, (14), 9 states have return successors, (13), 4 states have call predecessors, (13), 3 states have call successors, (13) [2023-04-02 05:18:35,428 INFO L276 IsEmpty]: Start isEmpty. Operand 9850 states and 13834 transitions. [2023-04-02 05:18:35,430 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 134 [2023-04-02 05:18:35,430 INFO L187 NwaCegarLoop]: Found error trace [2023-04-02 05:18:35,430 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2023-04-02 05:18:35,440 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2023-04-02 05:18:35,636 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-02 05:18:35,637 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-02 05:18:35,637 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-02 05:18:35,637 INFO L85 PathProgramCache]: Analyzing trace with hash -1370892402, now seen corresponding path program 1 times [2023-04-02 05:18:35,637 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-02 05:18:35,637 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [461384984] [2023-04-02 05:18:35,638 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 05:18:35,638 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-02 05:18:35,664 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:18:36,087 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-02 05:18:36,089 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:18:36,092 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2023-04-02 05:18:36,095 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:18:36,126 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2023-04-02 05:18:36,127 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:18:36,141 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2023-04-02 05:18:36,144 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:18:36,170 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2023-04-02 05:18:36,206 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:18:36,237 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2023-04-02 05:18:36,239 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:18:36,274 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2023-04-02 05:18:36,276 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:18:36,313 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2023-04-02 05:18:36,315 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:18:36,317 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2023-04-02 05:18:36,318 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:18:36,323 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2023-04-02 05:18:36,324 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:18:36,326 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2023-04-02 05:18:36,328 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:18:36,334 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 97 [2023-04-02 05:18:36,336 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:18:36,342 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 102 [2023-04-02 05:18:36,344 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:18:36,350 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 107 [2023-04-02 05:18:36,352 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:18:36,358 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 112 [2023-04-02 05:18:36,360 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:18:36,372 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 122 [2023-04-02 05:18:36,374 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:18:36,389 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 11 proven. 0 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2023-04-02 05:18:36,389 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-02 05:18:36,389 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [461384984] [2023-04-02 05:18:36,389 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [461384984] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-02 05:18:36,389 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-02 05:18:36,389 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [19] imperfect sequences [] total 19 [2023-04-02 05:18:36,389 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [166012014] [2023-04-02 05:18:36,390 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-02 05:18:36,390 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2023-04-02 05:18:36,390 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-02 05:18:36,391 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2023-04-02 05:18:36,391 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=50, Invalid=292, Unknown=0, NotChecked=0, Total=342 [2023-04-02 05:18:36,392 INFO L87 Difference]: Start difference. First operand 9850 states and 13834 transitions. Second operand has 19 states, 19 states have (on average 4.421052631578948) internal successors, (84), 13 states have internal predecessors, (84), 4 states have call successors, (13), 8 states have call predecessors, (13), 8 states have return successors, (12), 4 states have call predecessors, (12), 3 states have call successors, (12) [2023-04-02 05:18:48,410 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-02 05:18:48,410 INFO L93 Difference]: Finished difference Result 21861 states and 30931 transitions. [2023-04-02 05:18:48,410 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 153 states. [2023-04-02 05:18:48,411 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 4.421052631578948) internal successors, (84), 13 states have internal predecessors, (84), 4 states have call successors, (13), 8 states have call predecessors, (13), 8 states have return successors, (12), 4 states have call predecessors, (12), 3 states have call successors, (12) Word has length 133 [2023-04-02 05:18:48,411 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-02 05:18:48,459 INFO L225 Difference]: With dead ends: 21861 [2023-04-02 05:18:48,460 INFO L226 Difference]: Without dead ends: 14576 [2023-04-02 05:18:48,483 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 236 GetRequests, 73 SyntacticMatches, 0 SemanticMatches, 163 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10530 ImplicationChecksByTransitivity, 6.9s TimeCoverageRelationStatistics Valid=3699, Invalid=23361, Unknown=0, NotChecked=0, Total=27060 [2023-04-02 05:18:48,484 INFO L413 NwaCegarLoop]: 91 mSDtfsCounter, 3158 mSDsluCounter, 316 mSDsCounter, 0 mSdLazyCounter, 5060 mSolverCounterSat, 416 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3177 SdHoareTripleChecker+Valid, 407 SdHoareTripleChecker+Invalid, 5476 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 416 IncrementalHoareTripleChecker+Valid, 5060 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.0s IncrementalHoareTripleChecker+Time [2023-04-02 05:18:48,484 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3177 Valid, 407 Invalid, 5476 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [416 Valid, 5060 Invalid, 0 Unknown, 0 Unchecked, 3.0s Time] [2023-04-02 05:18:48,496 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14576 states. [2023-04-02 05:18:50,947 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14576 to 14263. [2023-04-02 05:18:50,958 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14263 states, 10806 states have (on average 1.4114380899500278) internal successors, (15252), 11004 states have internal predecessors, (15252), 1630 states have call successors, (1630), 1630 states have call predecessors, (1630), 1826 states have return successors, (3200), 1628 states have call predecessors, (3200), 1629 states have call successors, (3200) [2023-04-02 05:18:50,993 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14263 states to 14263 states and 20082 transitions. [2023-04-02 05:18:50,995 INFO L78 Accepts]: Start accepts. Automaton has 14263 states and 20082 transitions. Word has length 133 [2023-04-02 05:18:50,995 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-02 05:18:50,995 INFO L495 AbstractCegarLoop]: Abstraction has 14263 states and 20082 transitions. [2023-04-02 05:18:50,995 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 4.421052631578948) internal successors, (84), 13 states have internal predecessors, (84), 4 states have call successors, (13), 8 states have call predecessors, (13), 8 states have return successors, (12), 4 states have call predecessors, (12), 3 states have call successors, (12) [2023-04-02 05:18:50,996 INFO L276 IsEmpty]: Start isEmpty. Operand 14263 states and 20082 transitions. [2023-04-02 05:18:50,998 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 136 [2023-04-02 05:18:50,999 INFO L187 NwaCegarLoop]: Found error trace [2023-04-02 05:18:50,999 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2023-04-02 05:18:50,999 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2023-04-02 05:18:50,999 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-02 05:18:50,999 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-02 05:18:51,000 INFO L85 PathProgramCache]: Analyzing trace with hash -1474106615, now seen corresponding path program 1 times [2023-04-02 05:18:51,000 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-02 05:18:51,000 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [468548996] [2023-04-02 05:18:51,000 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 05:18:51,000 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-02 05:18:51,020 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:18:51,342 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-02 05:18:51,345 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:18:51,348 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2023-04-02 05:18:51,350 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:18:51,357 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2023-04-02 05:18:51,358 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:18:51,369 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2023-04-02 05:18:51,372 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:18:51,394 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2023-04-02 05:18:51,396 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:18:51,410 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2023-04-02 05:18:51,411 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:18:51,425 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2023-04-02 05:18:51,427 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:18:51,442 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2023-04-02 05:18:51,444 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:18:51,446 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2023-04-02 05:18:51,447 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:18:51,459 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2023-04-02 05:18:51,460 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:18:51,462 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2023-04-02 05:18:51,463 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:18:51,475 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2023-04-02 05:18:51,477 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:18:51,493 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 108 [2023-04-02 05:18:51,495 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:18:51,511 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 113 [2023-04-02 05:18:51,513 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:18:51,529 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2023-04-02 05:18:51,531 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:18:51,547 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 124 [2023-04-02 05:18:51,549 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:18:51,563 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 22 proven. 8 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2023-04-02 05:18:51,563 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-02 05:18:51,563 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [468548996] [2023-04-02 05:18:51,563 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [468548996] provided 0 perfect and 1 imperfect interpolant sequences [2023-04-02 05:18:51,563 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [714600712] [2023-04-02 05:18:51,563 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 05:18:51,563 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-02 05:18:51,564 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-04-02 05:18:51,565 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-04-02 05:18:51,567 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-04-02 05:18:51,725 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:18:51,729 INFO L262 TraceCheckSpWp]: Trace formula consists of 932 conjuncts, 22 conjunts are in the unsatisfiable core [2023-04-02 05:18:51,733 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-04-02 05:18:52,620 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 33 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-04-02 05:18:52,620 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-04-02 05:18:52,620 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [714600712] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-02 05:18:52,620 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-04-02 05:18:52,620 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [19] total 32 [2023-04-02 05:18:52,621 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1456275363] [2023-04-02 05:18:52,621 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-02 05:18:52,621 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2023-04-02 05:18:52,621 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-02 05:18:52,622 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2023-04-02 05:18:52,622 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=108, Invalid=884, Unknown=0, NotChecked=0, Total=992 [2023-04-02 05:18:52,622 INFO L87 Difference]: Start difference. First operand 14263 states and 20082 transitions. Second operand has 15 states, 15 states have (on average 6.6) internal successors, (99), 15 states have internal predecessors, (99), 4 states have call successors, (17), 12 states have call predecessors, (17), 12 states have return successors, (16), 4 states have call predecessors, (16), 3 states have call successors, (16) [2023-04-02 05:18:56,032 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-02 05:18:56,032 INFO L93 Difference]: Finished difference Result 20417 states and 28776 transitions. [2023-04-02 05:18:56,033 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-04-02 05:18:56,033 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 6.6) internal successors, (99), 15 states have internal predecessors, (99), 4 states have call successors, (17), 12 states have call predecessors, (17), 12 states have return successors, (16), 4 states have call predecessors, (16), 3 states have call successors, (16) Word has length 135 [2023-04-02 05:18:56,033 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-02 05:18:56,095 INFO L225 Difference]: With dead ends: 20417 [2023-04-02 05:18:56,095 INFO L226 Difference]: Without dead ends: 18796 [2023-04-02 05:18:56,107 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 183 GetRequests, 151 SyntacticMatches, 0 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 264 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=136, Invalid=986, Unknown=0, NotChecked=0, Total=1122 [2023-04-02 05:18:56,108 INFO L413 NwaCegarLoop]: 55 mSDtfsCounter, 1124 mSDsluCounter, 660 mSDsCounter, 0 mSdLazyCounter, 2060 mSolverCounterSat, 84 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1130 SdHoareTripleChecker+Valid, 715 SdHoareTripleChecker+Invalid, 2144 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 84 IncrementalHoareTripleChecker+Valid, 2060 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2023-04-02 05:18:56,108 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1130 Valid, 715 Invalid, 2144 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [84 Valid, 2060 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2023-04-02 05:18:56,122 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18796 states. [2023-04-02 05:18:59,088 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18796 to 18777. [2023-04-02 05:18:59,105 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 18777 states, 14230 states have (on average 1.4125087842586086) internal successors, (20100), 14474 states have internal predecessors, (20100), 2152 states have call successors, (2152), 2152 states have call predecessors, (2152), 2394 states have return successors, (4220), 2150 states have call predecessors, (4220), 2151 states have call successors, (4220) [2023-04-02 05:18:59,142 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18777 states to 18777 states and 26472 transitions. [2023-04-02 05:18:59,143 INFO L78 Accepts]: Start accepts. Automaton has 18777 states and 26472 transitions. Word has length 135 [2023-04-02 05:18:59,145 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-02 05:18:59,145 INFO L495 AbstractCegarLoop]: Abstraction has 18777 states and 26472 transitions. [2023-04-02 05:18:59,145 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 6.6) internal successors, (99), 15 states have internal predecessors, (99), 4 states have call successors, (17), 12 states have call predecessors, (17), 12 states have return successors, (16), 4 states have call predecessors, (16), 3 states have call successors, (16) [2023-04-02 05:18:59,145 INFO L276 IsEmpty]: Start isEmpty. Operand 18777 states and 26472 transitions. [2023-04-02 05:18:59,148 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 136 [2023-04-02 05:18:59,148 INFO L187 NwaCegarLoop]: Found error trace [2023-04-02 05:18:59,149 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2023-04-02 05:18:59,156 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2023-04-02 05:18:59,355 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2023-04-02 05:18:59,356 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-02 05:18:59,356 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-02 05:18:59,356 INFO L85 PathProgramCache]: Analyzing trace with hash 1256882902, now seen corresponding path program 1 times [2023-04-02 05:18:59,356 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-02 05:18:59,356 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1439621780] [2023-04-02 05:18:59,356 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 05:18:59,357 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-02 05:18:59,414 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:18:59,584 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-02 05:18:59,588 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:18:59,591 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2023-04-02 05:18:59,592 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:18:59,595 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2023-04-02 05:18:59,595 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:18:59,605 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2023-04-02 05:18:59,607 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:18:59,619 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2023-04-02 05:18:59,621 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:18:59,633 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2023-04-02 05:18:59,634 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:18:59,647 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2023-04-02 05:18:59,648 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:18:59,661 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2023-04-02 05:18:59,663 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:18:59,665 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2023-04-02 05:18:59,666 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:18:59,668 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2023-04-02 05:18:59,669 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:18:59,670 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2023-04-02 05:18:59,671 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:18:59,700 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 97 [2023-04-02 05:18:59,702 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:18:59,710 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 106 [2023-04-02 05:18:59,711 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:18:59,713 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 111 [2023-04-02 05:18:59,714 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:18:59,716 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 116 [2023-04-02 05:18:59,717 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:18:59,719 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 122 [2023-04-02 05:18:59,720 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:18:59,721 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 13 proven. 2 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2023-04-02 05:18:59,722 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-02 05:18:59,722 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1439621780] [2023-04-02 05:18:59,722 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1439621780] provided 0 perfect and 1 imperfect interpolant sequences [2023-04-02 05:18:59,722 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1721673959] [2023-04-02 05:18:59,722 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 05:18:59,722 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-02 05:18:59,722 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-04-02 05:18:59,723 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-04-02 05:18:59,726 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-04-02 05:18:59,892 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:18:59,896 INFO L262 TraceCheckSpWp]: Trace formula consists of 931 conjuncts, 14 conjunts are in the unsatisfiable core [2023-04-02 05:18:59,900 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-04-02 05:19:00,051 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 37 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-02 05:19:00,051 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-04-02 05:19:00,322 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 17 proven. 3 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2023-04-02 05:19:00,323 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1721673959] provided 0 perfect and 2 imperfect interpolant sequences [2023-04-02 05:19:00,323 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-04-02 05:19:00,323 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 6, 9] total 21 [2023-04-02 05:19:00,323 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [73404785] [2023-04-02 05:19:00,323 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-04-02 05:19:00,324 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2023-04-02 05:19:00,324 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-02 05:19:00,325 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2023-04-02 05:19:00,325 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=72, Invalid=348, Unknown=0, NotChecked=0, Total=420 [2023-04-02 05:19:00,326 INFO L87 Difference]: Start difference. First operand 18777 states and 26472 transitions. Second operand has 21 states, 20 states have (on average 7.8) internal successors, (156), 14 states have internal predecessors, (156), 7 states have call successors, (43), 13 states have call predecessors, (43), 9 states have return successors, (37), 7 states have call predecessors, (37), 7 states have call successors, (37) [2023-04-02 05:19:07,575 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-02 05:19:07,576 INFO L93 Difference]: Finished difference Result 47787 states and 67448 transitions. [2023-04-02 05:19:07,576 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2023-04-02 05:19:07,576 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 20 states have (on average 7.8) internal successors, (156), 14 states have internal predecessors, (156), 7 states have call successors, (43), 13 states have call predecessors, (43), 9 states have return successors, (37), 7 states have call predecessors, (37), 7 states have call successors, (37) Word has length 135 [2023-04-02 05:19:07,577 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-02 05:19:07,698 INFO L225 Difference]: With dead ends: 47787 [2023-04-02 05:19:07,698 INFO L226 Difference]: Without dead ends: 29068 [2023-04-02 05:19:07,738 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 355 GetRequests, 305 SyntacticMatches, 0 SemanticMatches, 50 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 607 ImplicationChecksByTransitivity, 1.9s TimeCoverageRelationStatistics Valid=548, Invalid=2104, Unknown=0, NotChecked=0, Total=2652 [2023-04-02 05:19:07,738 INFO L413 NwaCegarLoop]: 39 mSDtfsCounter, 1346 mSDsluCounter, 148 mSDsCounter, 0 mSdLazyCounter, 2410 mSolverCounterSat, 118 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1352 SdHoareTripleChecker+Valid, 187 SdHoareTripleChecker+Invalid, 2528 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 118 IncrementalHoareTripleChecker+Valid, 2410 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2023-04-02 05:19:07,739 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1352 Valid, 187 Invalid, 2528 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [118 Valid, 2410 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2023-04-02 05:19:07,766 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29068 states. [2023-04-02 05:19:12,423 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29068 to 27998. [2023-04-02 05:19:12,444 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 27998 states, 21077 states have (on average 1.381838022488969) internal successors, (29125), 21535 states have internal predecessors, (29125), 3232 states have call successors, (3232), 3232 states have call predecessors, (3232), 3688 states have return successors, (6143), 3230 states have call predecessors, (6143), 3231 states have call successors, (6143) [2023-04-02 05:19:12,500 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27998 states to 27998 states and 38500 transitions. [2023-04-02 05:19:12,503 INFO L78 Accepts]: Start accepts. Automaton has 27998 states and 38500 transitions. Word has length 135 [2023-04-02 05:19:12,503 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-02 05:19:12,503 INFO L495 AbstractCegarLoop]: Abstraction has 27998 states and 38500 transitions. [2023-04-02 05:19:12,503 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 20 states have (on average 7.8) internal successors, (156), 14 states have internal predecessors, (156), 7 states have call successors, (43), 13 states have call predecessors, (43), 9 states have return successors, (37), 7 states have call predecessors, (37), 7 states have call successors, (37) [2023-04-02 05:19:12,503 INFO L276 IsEmpty]: Start isEmpty. Operand 27998 states and 38500 transitions. [2023-04-02 05:19:12,506 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 137 [2023-04-02 05:19:12,506 INFO L187 NwaCegarLoop]: Found error trace [2023-04-02 05:19:12,506 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2023-04-02 05:19:12,513 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2023-04-02 05:19:12,713 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-02 05:19:12,713 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-02 05:19:12,714 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-02 05:19:12,714 INFO L85 PathProgramCache]: Analyzing trace with hash -813055339, now seen corresponding path program 1 times [2023-04-02 05:19:12,714 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-02 05:19:12,714 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1410146936] [2023-04-02 05:19:12,714 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 05:19:12,714 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-02 05:19:12,745 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:19:12,955 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-02 05:19:12,958 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:19:12,961 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2023-04-02 05:19:12,962 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:19:12,965 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2023-04-02 05:19:12,965 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:19:12,981 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2023-04-02 05:19:12,982 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:19:12,994 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2023-04-02 05:19:12,996 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:19:13,010 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2023-04-02 05:19:13,012 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:19:13,026 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2023-04-02 05:19:13,028 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:19:13,042 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2023-04-02 05:19:13,043 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:19:13,045 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2023-04-02 05:19:13,046 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:19:13,048 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2023-04-02 05:19:13,049 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:19:13,050 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2023-04-02 05:19:13,051 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:19:13,053 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 101 [2023-04-02 05:19:13,054 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:19:13,087 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 106 [2023-04-02 05:19:13,089 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:19:13,090 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 111 [2023-04-02 05:19:13,091 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:19:13,092 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 116 [2023-04-02 05:19:13,093 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:19:13,094 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 122 [2023-04-02 05:19:13,096 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:19:13,098 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 13 proven. 2 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2023-04-02 05:19:13,098 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-02 05:19:13,098 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1410146936] [2023-04-02 05:19:13,098 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1410146936] provided 0 perfect and 1 imperfect interpolant sequences [2023-04-02 05:19:13,098 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1796639894] [2023-04-02 05:19:13,098 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 05:19:13,098 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-02 05:19:13,098 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-04-02 05:19:13,099 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-04-02 05:19:13,102 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2023-04-02 05:19:13,259 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:19:13,263 INFO L262 TraceCheckSpWp]: Trace formula consists of 931 conjuncts, 14 conjunts are in the unsatisfiable core [2023-04-02 05:19:13,267 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-04-02 05:19:13,426 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 32 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-02 05:19:13,426 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-04-02 05:19:13,626 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 18 proven. 2 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2023-04-02 05:19:13,626 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1796639894] provided 0 perfect and 2 imperfect interpolant sequences [2023-04-02 05:19:13,626 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-04-02 05:19:13,626 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 9, 8] total 21 [2023-04-02 05:19:13,626 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [851360314] [2023-04-02 05:19:13,626 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-04-02 05:19:13,627 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2023-04-02 05:19:13,627 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-02 05:19:13,628 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2023-04-02 05:19:13,628 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=83, Invalid=337, Unknown=0, NotChecked=0, Total=420 [2023-04-02 05:19:13,628 INFO L87 Difference]: Start difference. First operand 27998 states and 38500 transitions. Second operand has 21 states, 20 states have (on average 8.0) internal successors, (160), 14 states have internal predecessors, (160), 7 states have call successors, (43), 14 states have call predecessors, (43), 10 states have return successors, (37), 7 states have call predecessors, (37), 7 states have call successors, (37) [2023-04-02 05:19:17,718 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-02 05:19:17,719 INFO L93 Difference]: Finished difference Result 41833 states and 57422 transitions. [2023-04-02 05:19:17,719 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2023-04-02 05:19:17,719 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 20 states have (on average 8.0) internal successors, (160), 14 states have internal predecessors, (160), 7 states have call successors, (43), 14 states have call predecessors, (43), 10 states have return successors, (37), 7 states have call predecessors, (37), 7 states have call successors, (37) Word has length 136 [2023-04-02 05:19:17,719 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-02 05:19:17,759 INFO L225 Difference]: With dead ends: 41833 [2023-04-02 05:19:17,759 INFO L226 Difference]: Without dead ends: 13943 [2023-04-02 05:19:17,802 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 333 GetRequests, 297 SyntacticMatches, 0 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 289 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=359, Invalid=1047, Unknown=0, NotChecked=0, Total=1406 [2023-04-02 05:19:17,803 INFO L413 NwaCegarLoop]: 24 mSDtfsCounter, 958 mSDsluCounter, 101 mSDsCounter, 0 mSdLazyCounter, 1078 mSolverCounterSat, 84 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 959 SdHoareTripleChecker+Valid, 125 SdHoareTripleChecker+Invalid, 1162 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 84 IncrementalHoareTripleChecker+Valid, 1078 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2023-04-02 05:19:17,803 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [959 Valid, 125 Invalid, 1162 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [84 Valid, 1078 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2023-04-02 05:19:17,815 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13943 states. [2023-04-02 05:19:19,954 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13943 to 13863. [2023-04-02 05:19:19,963 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13863 states, 10420 states have (on average 1.367370441458733) internal successors, (14248), 10644 states have internal predecessors, (14248), 1610 states have call successors, (1610), 1610 states have call predecessors, (1610), 1832 states have return successors, (2931), 1608 states have call predecessors, (2931), 1609 states have call successors, (2931) [2023-04-02 05:19:19,985 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13863 states to 13863 states and 18789 transitions. [2023-04-02 05:19:19,988 INFO L78 Accepts]: Start accepts. Automaton has 13863 states and 18789 transitions. Word has length 136 [2023-04-02 05:19:19,988 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-02 05:19:19,988 INFO L495 AbstractCegarLoop]: Abstraction has 13863 states and 18789 transitions. [2023-04-02 05:19:19,988 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 20 states have (on average 8.0) internal successors, (160), 14 states have internal predecessors, (160), 7 states have call successors, (43), 14 states have call predecessors, (43), 10 states have return successors, (37), 7 states have call predecessors, (37), 7 states have call successors, (37) [2023-04-02 05:19:19,988 INFO L276 IsEmpty]: Start isEmpty. Operand 13863 states and 18789 transitions. [2023-04-02 05:19:19,990 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 139 [2023-04-02 05:19:19,991 INFO L187 NwaCegarLoop]: Found error trace [2023-04-02 05:19:19,991 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2023-04-02 05:19:19,996 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2023-04-02 05:19:20,193 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-02 05:19:20,193 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-02 05:19:20,193 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-02 05:19:20,193 INFO L85 PathProgramCache]: Analyzing trace with hash 1098409667, now seen corresponding path program 1 times [2023-04-02 05:19:20,193 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-02 05:19:20,194 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [175427195] [2023-04-02 05:19:20,194 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 05:19:20,194 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-02 05:19:20,213 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:19:20,386 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-02 05:19:20,389 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:19:20,392 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2023-04-02 05:19:20,393 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:19:20,396 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2023-04-02 05:19:20,397 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:19:20,407 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2023-04-02 05:19:20,408 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:19:20,419 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2023-04-02 05:19:20,420 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:19:20,432 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2023-04-02 05:19:20,436 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:19:20,458 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2023-04-02 05:19:20,460 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:19:20,474 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2023-04-02 05:19:20,476 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:19:20,477 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2023-04-02 05:19:20,479 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:19:20,480 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2023-04-02 05:19:20,481 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:19:20,482 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2023-04-02 05:19:20,484 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:19:20,485 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 101 [2023-04-02 05:19:20,486 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:19:20,488 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 108 [2023-04-02 05:19:20,489 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:19:20,515 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 113 [2023-04-02 05:19:20,516 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:19:20,518 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2023-04-02 05:19:20,519 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:19:20,520 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 124 [2023-04-02 05:19:20,521 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:19:20,522 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 13 proven. 2 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2023-04-02 05:19:20,522 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-02 05:19:20,522 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [175427195] [2023-04-02 05:19:20,522 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [175427195] provided 0 perfect and 1 imperfect interpolant sequences [2023-04-02 05:19:20,523 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2100773486] [2023-04-02 05:19:20,523 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 05:19:20,523 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-02 05:19:20,523 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-04-02 05:19:20,524 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-04-02 05:19:20,526 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2023-04-02 05:19:20,678 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:19:20,681 INFO L262 TraceCheckSpWp]: Trace formula consists of 934 conjuncts, 14 conjunts are in the unsatisfiable core [2023-04-02 05:19:20,684 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-04-02 05:19:20,828 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 27 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-02 05:19:20,828 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-04-02 05:19:21,022 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 18 proven. 2 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2023-04-02 05:19:21,022 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2100773486] provided 0 perfect and 2 imperfect interpolant sequences [2023-04-02 05:19:21,022 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-04-02 05:19:21,022 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 9, 8] total 21 [2023-04-02 05:19:21,023 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [89869592] [2023-04-02 05:19:21,023 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-04-02 05:19:21,023 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2023-04-02 05:19:21,023 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-02 05:19:21,024 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2023-04-02 05:19:21,024 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=83, Invalid=337, Unknown=0, NotChecked=0, Total=420 [2023-04-02 05:19:21,024 INFO L87 Difference]: Start difference. First operand 13863 states and 18789 transitions. Second operand has 21 states, 20 states have (on average 8.25) internal successors, (165), 14 states have internal predecessors, (165), 7 states have call successors, (43), 15 states have call predecessors, (43), 10 states have return successors, (37), 7 states have call predecessors, (37), 7 states have call successors, (37) [2023-04-02 05:19:27,710 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-02 05:19:27,710 INFO L93 Difference]: Finished difference Result 41235 states and 56304 transitions. [2023-04-02 05:19:27,710 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2023-04-02 05:19:27,711 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 20 states have (on average 8.25) internal successors, (165), 14 states have internal predecessors, (165), 7 states have call successors, (43), 15 states have call predecessors, (43), 10 states have return successors, (37), 7 states have call predecessors, (37), 7 states have call successors, (37) Word has length 138 [2023-04-02 05:19:27,711 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-02 05:19:27,804 INFO L225 Difference]: With dead ends: 41235 [2023-04-02 05:19:27,804 INFO L226 Difference]: Without dead ends: 27480 [2023-04-02 05:19:27,838 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 358 GetRequests, 308 SyntacticMatches, 0 SemanticMatches, 50 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 651 ImplicationChecksByTransitivity, 2.1s TimeCoverageRelationStatistics Valid=592, Invalid=2060, Unknown=0, NotChecked=0, Total=2652 [2023-04-02 05:19:27,839 INFO L413 NwaCegarLoop]: 27 mSDtfsCounter, 2191 mSDsluCounter, 76 mSDsCounter, 0 mSdLazyCounter, 1268 mSolverCounterSat, 223 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2199 SdHoareTripleChecker+Valid, 103 SdHoareTripleChecker+Invalid, 1491 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 223 IncrementalHoareTripleChecker+Valid, 1268 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2023-04-02 05:19:27,839 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2199 Valid, 103 Invalid, 1491 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [223 Valid, 1268 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2023-04-02 05:19:27,862 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27480 states. [2023-04-02 05:19:32,194 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27480 to 26439. [2023-04-02 05:19:32,220 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 26439 states, 19663 states have (on average 1.3407923511163098) internal successors, (26364), 20076 states have internal predecessors, (26364), 3182 states have call successors, (3182), 3182 states have call predecessors, (3182), 3593 states have return successors, (5997), 3180 states have call predecessors, (5997), 3181 states have call successors, (5997) [2023-04-02 05:19:32,286 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26439 states to 26439 states and 35543 transitions. [2023-04-02 05:19:32,289 INFO L78 Accepts]: Start accepts. Automaton has 26439 states and 35543 transitions. Word has length 138 [2023-04-02 05:19:32,289 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-02 05:19:32,289 INFO L495 AbstractCegarLoop]: Abstraction has 26439 states and 35543 transitions. [2023-04-02 05:19:32,289 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 20 states have (on average 8.25) internal successors, (165), 14 states have internal predecessors, (165), 7 states have call successors, (43), 15 states have call predecessors, (43), 10 states have return successors, (37), 7 states have call predecessors, (37), 7 states have call successors, (37) [2023-04-02 05:19:32,289 INFO L276 IsEmpty]: Start isEmpty. Operand 26439 states and 35543 transitions. [2023-04-02 05:19:32,292 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 141 [2023-04-02 05:19:32,293 INFO L187 NwaCegarLoop]: Found error trace [2023-04-02 05:19:32,293 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2023-04-02 05:19:32,300 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2023-04-02 05:19:32,500 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-02 05:19:32,500 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-02 05:19:32,500 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-02 05:19:32,501 INFO L85 PathProgramCache]: Analyzing trace with hash -1666068843, now seen corresponding path program 1 times [2023-04-02 05:19:32,501 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-02 05:19:32,501 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [150255497] [2023-04-02 05:19:32,501 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 05:19:32,501 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-02 05:19:32,521 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:19:32,691 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-02 05:19:32,693 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:19:32,696 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2023-04-02 05:19:32,697 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:19:32,700 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2023-04-02 05:19:32,700 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:19:32,711 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2023-04-02 05:19:32,712 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:19:32,723 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2023-04-02 05:19:32,724 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:19:32,736 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2023-04-02 05:19:32,738 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:19:32,751 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2023-04-02 05:19:32,753 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:19:32,768 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2023-04-02 05:19:32,769 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:19:32,771 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2023-04-02 05:19:32,773 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:19:32,774 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2023-04-02 05:19:32,775 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:19:32,776 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2023-04-02 05:19:32,777 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:19:32,779 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2023-04-02 05:19:32,780 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:19:32,781 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 110 [2023-04-02 05:19:32,782 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:19:32,784 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 115 [2023-04-02 05:19:32,785 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:19:32,812 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 120 [2023-04-02 05:19:32,813 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:19:32,815 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 126 [2023-04-02 05:19:32,816 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:19:32,817 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 13 proven. 2 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2023-04-02 05:19:32,817 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-02 05:19:32,817 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [150255497] [2023-04-02 05:19:32,817 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [150255497] provided 0 perfect and 1 imperfect interpolant sequences [2023-04-02 05:19:32,817 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1836491093] [2023-04-02 05:19:32,817 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 05:19:32,818 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-02 05:19:32,818 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-04-02 05:19:32,821 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-04-02 05:19:32,844 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2023-04-02 05:19:32,981 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:19:32,984 INFO L262 TraceCheckSpWp]: Trace formula consists of 937 conjuncts, 14 conjunts are in the unsatisfiable core [2023-04-02 05:19:32,987 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-04-02 05:19:33,154 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 22 proven. 17 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-02 05:19:33,154 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-04-02 05:19:33,354 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 18 proven. 2 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2023-04-02 05:19:33,354 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1836491093] provided 0 perfect and 2 imperfect interpolant sequences [2023-04-02 05:19:33,355 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-04-02 05:19:33,355 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 9, 8] total 21 [2023-04-02 05:19:33,355 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2062291788] [2023-04-02 05:19:33,355 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-04-02 05:19:33,355 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2023-04-02 05:19:33,356 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-02 05:19:33,356 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2023-04-02 05:19:33,356 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=83, Invalid=337, Unknown=0, NotChecked=0, Total=420 [2023-04-02 05:19:33,357 INFO L87 Difference]: Start difference. First operand 26439 states and 35543 transitions. Second operand has 21 states, 20 states have (on average 8.5) internal successors, (170), 14 states have internal predecessors, (170), 7 states have call successors, (43), 15 states have call predecessors, (43), 10 states have return successors, (37), 7 states have call predecessors, (37), 7 states have call successors, (37) [2023-04-02 05:19:44,548 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-02 05:19:44,549 INFO L93 Difference]: Finished difference Result 78862 states and 106871 transitions. [2023-04-02 05:19:44,550 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2023-04-02 05:19:44,551 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 20 states have (on average 8.5) internal successors, (170), 14 states have internal predecessors, (170), 7 states have call successors, (43), 15 states have call predecessors, (43), 10 states have return successors, (37), 7 states have call predecessors, (37), 7 states have call successors, (37) Word has length 140 [2023-04-02 05:19:44,551 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-02 05:19:44,739 INFO L225 Difference]: With dead ends: 78862 [2023-04-02 05:19:44,739 INFO L226 Difference]: Without dead ends: 52572 [2023-04-02 05:19:44,798 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 362 GetRequests, 312 SyntacticMatches, 0 SemanticMatches, 50 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 646 ImplicationChecksByTransitivity, 2.1s TimeCoverageRelationStatistics Valid=590, Invalid=2062, Unknown=0, NotChecked=0, Total=2652 [2023-04-02 05:19:44,798 INFO L413 NwaCegarLoop]: 29 mSDtfsCounter, 1688 mSDsluCounter, 105 mSDsCounter, 0 mSdLazyCounter, 1513 mSolverCounterSat, 145 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1697 SdHoareTripleChecker+Valid, 134 SdHoareTripleChecker+Invalid, 1658 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 145 IncrementalHoareTripleChecker+Valid, 1513 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2023-04-02 05:19:44,799 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1697 Valid, 134 Invalid, 1658 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [145 Valid, 1513 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2023-04-02 05:19:44,848 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 52572 states. [2023-04-02 05:19:53,710 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 52572 to 50404. [2023-04-02 05:19:53,750 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 50404 states, 37035 states have (on average 1.3098690427973538) internal successors, (48511), 37781 states have internal predecessors, (48511), 6312 states have call successors, (6312), 6312 states have call predecessors, (6312), 7056 states have return successors, (12303), 6310 states have call predecessors, (12303), 6311 states have call successors, (12303) [2023-04-02 05:19:53,866 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 50404 states to 50404 states and 67126 transitions. [2023-04-02 05:19:53,871 INFO L78 Accepts]: Start accepts. Automaton has 50404 states and 67126 transitions. Word has length 140 [2023-04-02 05:19:53,871 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-02 05:19:53,871 INFO L495 AbstractCegarLoop]: Abstraction has 50404 states and 67126 transitions. [2023-04-02 05:19:53,872 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 20 states have (on average 8.5) internal successors, (170), 14 states have internal predecessors, (170), 7 states have call successors, (43), 15 states have call predecessors, (43), 10 states have return successors, (37), 7 states have call predecessors, (37), 7 states have call successors, (37) [2023-04-02 05:19:53,872 INFO L276 IsEmpty]: Start isEmpty. Operand 50404 states and 67126 transitions. [2023-04-02 05:19:53,876 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 143 [2023-04-02 05:19:53,876 INFO L187 NwaCegarLoop]: Found error trace [2023-04-02 05:19:53,876 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2023-04-02 05:19:53,883 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2023-04-02 05:19:54,077 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable21 [2023-04-02 05:19:54,077 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-02 05:19:54,077 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-02 05:19:54,077 INFO L85 PathProgramCache]: Analyzing trace with hash -1024540541, now seen corresponding path program 1 times [2023-04-02 05:19:54,078 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-02 05:19:54,078 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1952537218] [2023-04-02 05:19:54,078 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 05:19:54,078 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-02 05:19:54,094 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:19:54,251 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-02 05:19:54,254 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:19:54,256 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2023-04-02 05:19:54,258 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:19:54,261 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2023-04-02 05:19:54,261 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:19:54,272 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2023-04-02 05:19:54,273 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:19:54,283 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2023-04-02 05:19:54,285 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:19:54,296 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2023-04-02 05:19:54,298 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:19:54,310 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2023-04-02 05:19:54,311 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:19:54,323 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2023-04-02 05:19:54,324 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:19:54,327 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2023-04-02 05:19:54,328 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:19:54,330 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2023-04-02 05:19:54,330 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:19:54,332 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2023-04-02 05:19:54,333 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:19:54,335 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2023-04-02 05:19:54,336 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:19:54,337 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 112 [2023-04-02 05:19:54,338 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:19:54,340 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 117 [2023-04-02 05:19:54,341 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:19:54,342 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 122 [2023-04-02 05:19:54,344 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:19:54,368 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 128 [2023-04-02 05:19:54,370 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:19:54,371 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 13 proven. 2 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2023-04-02 05:19:54,371 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-02 05:19:54,372 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1952537218] [2023-04-02 05:19:54,372 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1952537218] provided 0 perfect and 1 imperfect interpolant sequences [2023-04-02 05:19:54,372 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [913968586] [2023-04-02 05:19:54,372 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 05:19:54,372 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-02 05:19:54,372 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-04-02 05:19:54,377 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-04-02 05:19:54,381 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2023-04-02 05:19:54,534 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:19:54,537 INFO L262 TraceCheckSpWp]: Trace formula consists of 940 conjuncts, 14 conjunts are in the unsatisfiable core [2023-04-02 05:19:54,540 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-04-02 05:19:54,692 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 17 proven. 22 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-02 05:19:54,692 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-04-02 05:19:54,872 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 18 proven. 2 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2023-04-02 05:19:54,873 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [913968586] provided 0 perfect and 2 imperfect interpolant sequences [2023-04-02 05:19:54,873 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-04-02 05:19:54,873 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 9, 8] total 21 [2023-04-02 05:19:54,873 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1498880671] [2023-04-02 05:19:54,873 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-04-02 05:19:54,874 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2023-04-02 05:19:54,874 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-02 05:19:54,875 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2023-04-02 05:19:54,875 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=83, Invalid=337, Unknown=0, NotChecked=0, Total=420 [2023-04-02 05:19:54,875 INFO L87 Difference]: Start difference. First operand 50404 states and 67126 transitions. Second operand has 21 states, 20 states have (on average 8.75) internal successors, (175), 14 states have internal predecessors, (175), 7 states have call successors, (43), 15 states have call predecessors, (43), 10 states have return successors, (37), 7 states have call predecessors, (37), 7 states have call successors, (37) [2023-04-02 05:20:14,545 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-02 05:20:14,545 INFO L93 Difference]: Finished difference Result 150562 states and 202293 transitions. [2023-04-02 05:20:14,546 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2023-04-02 05:20:14,546 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 20 states have (on average 8.75) internal successors, (175), 14 states have internal predecessors, (175), 7 states have call successors, (43), 15 states have call predecessors, (43), 10 states have return successors, (37), 7 states have call predecessors, (37), 7 states have call successors, (37) Word has length 142 [2023-04-02 05:20:14,546 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-02 05:20:14,935 INFO L225 Difference]: With dead ends: 150562 [2023-04-02 05:20:14,935 INFO L226 Difference]: Without dead ends: 100371 [2023-04-02 05:20:15,025 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 366 GetRequests, 316 SyntacticMatches, 0 SemanticMatches, 50 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 639 ImplicationChecksByTransitivity, 2.1s TimeCoverageRelationStatistics Valid=588, Invalid=2064, Unknown=0, NotChecked=0, Total=2652 [2023-04-02 05:20:15,026 INFO L413 NwaCegarLoop]: 31 mSDtfsCounter, 1641 mSDsluCounter, 88 mSDsCounter, 0 mSdLazyCounter, 1337 mSolverCounterSat, 153 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1651 SdHoareTripleChecker+Valid, 119 SdHoareTripleChecker+Invalid, 1490 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 153 IncrementalHoareTripleChecker+Valid, 1337 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2023-04-02 05:20:15,026 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1651 Valid, 119 Invalid, 1490 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [153 Valid, 1337 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2023-04-02 05:20:15,106 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 100371 states. [2023-04-02 05:20:32,251 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 100371 to 95837. [2023-04-02 05:20:32,333 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 95837 states, 69481 states have (on average 1.2763489299232884) internal successors, (88682), 70786 states have internal predecessors, (88682), 12526 states have call successors, (12526), 12526 states have call predecessors, (12526), 13829 states have return successors, (25098), 12524 states have call predecessors, (25098), 12525 states have call successors, (25098) [2023-04-02 05:20:32,801 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 95837 states to 95837 states and 126306 transitions. [2023-04-02 05:20:32,810 INFO L78 Accepts]: Start accepts. Automaton has 95837 states and 126306 transitions. Word has length 142 [2023-04-02 05:20:32,810 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-02 05:20:32,810 INFO L495 AbstractCegarLoop]: Abstraction has 95837 states and 126306 transitions. [2023-04-02 05:20:32,810 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 20 states have (on average 8.75) internal successors, (175), 14 states have internal predecessors, (175), 7 states have call successors, (43), 15 states have call predecessors, (43), 10 states have return successors, (37), 7 states have call predecessors, (37), 7 states have call successors, (37) [2023-04-02 05:20:32,810 INFO L276 IsEmpty]: Start isEmpty. Operand 95837 states and 126306 transitions. [2023-04-02 05:20:32,818 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 145 [2023-04-02 05:20:32,818 INFO L187 NwaCegarLoop]: Found error trace [2023-04-02 05:20:32,818 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2023-04-02 05:20:32,824 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2023-04-02 05:20:33,019 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22,10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-02 05:20:33,020 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-02 05:20:33,020 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-02 05:20:33,020 INFO L85 PathProgramCache]: Analyzing trace with hash -1168834603, now seen corresponding path program 1 times [2023-04-02 05:20:33,020 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-02 05:20:33,020 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [487873883] [2023-04-02 05:20:33,020 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 05:20:33,021 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-02 05:20:33,050 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:20:33,661 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-02 05:20:33,665 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:20:33,677 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2023-04-02 05:20:33,682 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:20:33,721 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2023-04-02 05:20:33,723 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:20:33,740 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2023-04-02 05:20:33,742 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:20:33,761 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2023-04-02 05:20:33,764 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:20:33,781 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2023-04-02 05:20:33,783 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:20:33,805 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2023-04-02 05:20:33,806 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:20:33,829 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2023-04-02 05:20:33,832 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:20:34,013 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2023-04-02 05:20:34,014 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:20:34,016 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2023-04-02 05:20:34,017 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:20:34,018 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2023-04-02 05:20:34,019 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:20:34,070 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2023-04-02 05:20:34,071 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:20:34,072 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 112 [2023-04-02 05:20:34,073 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:20:34,074 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 117 [2023-04-02 05:20:34,075 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:20:34,077 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 122 [2023-04-02 05:20:34,077 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:20:34,078 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 130 [2023-04-02 05:20:34,079 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:20:34,080 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 13 proven. 5 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2023-04-02 05:20:34,080 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-02 05:20:34,081 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [487873883] [2023-04-02 05:20:34,081 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [487873883] provided 0 perfect and 1 imperfect interpolant sequences [2023-04-02 05:20:34,081 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [777379545] [2023-04-02 05:20:34,081 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 05:20:34,081 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-02 05:20:34,081 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-04-02 05:20:34,082 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-04-02 05:20:34,087 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2023-04-02 05:20:34,229 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:20:34,232 INFO L262 TraceCheckSpWp]: Trace formula consists of 943 conjuncts, 6 conjunts are in the unsatisfiable core [2023-04-02 05:20:34,234 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-04-02 05:20:34,344 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 16 proven. 0 refuted. 0 times theorem prover too weak. 23 trivial. 0 not checked. [2023-04-02 05:20:34,345 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-04-02 05:20:34,345 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [777379545] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-02 05:20:34,345 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-04-02 05:20:34,345 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [21] total 24 [2023-04-02 05:20:34,345 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [213820184] [2023-04-02 05:20:34,345 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-02 05:20:34,346 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-04-02 05:20:34,346 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-02 05:20:34,346 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-04-02 05:20:34,346 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=60, Invalid=492, Unknown=0, NotChecked=0, Total=552 [2023-04-02 05:20:34,346 INFO L87 Difference]: Start difference. First operand 95837 states and 126306 transitions. Second operand has 5 states, 5 states have (on average 19.8) internal successors, (99), 5 states have internal predecessors, (99), 3 states have call successors, (14), 4 states have call predecessors, (14), 4 states have return successors, (13), 3 states have call predecessors, (13), 3 states have call successors, (13) [2023-04-02 05:20:43,459 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-02 05:20:43,460 INFO L93 Difference]: Finished difference Result 142896 states and 188308 transitions. [2023-04-02 05:20:43,460 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-04-02 05:20:43,460 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 19.8) internal successors, (99), 5 states have internal predecessors, (99), 3 states have call successors, (14), 4 states have call predecessors, (14), 4 states have return successors, (13), 3 states have call predecessors, (13), 3 states have call successors, (13) Word has length 144 [2023-04-02 05:20:43,460 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-02 05:20:43,753 INFO L225 Difference]: With dead ends: 142896 [2023-04-02 05:20:43,753 INFO L226 Difference]: Without dead ends: 47241 [2023-04-02 05:20:43,853 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 191 GetRequests, 166 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 84 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=72, Invalid=630, Unknown=0, NotChecked=0, Total=702 [2023-04-02 05:20:43,854 INFO L413 NwaCegarLoop]: 43 mSDtfsCounter, 182 mSDsluCounter, 47 mSDsCounter, 0 mSdLazyCounter, 400 mSolverCounterSat, 17 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 186 SdHoareTripleChecker+Valid, 90 SdHoareTripleChecker+Invalid, 417 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 400 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-04-02 05:20:43,854 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [186 Valid, 90 Invalid, 417 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [17 Valid, 400 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-04-02 05:20:43,880 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 47241 states. [2023-04-02 05:20:52,291 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 47241 to 47239. [2023-04-02 05:20:52,328 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 47239 states, 34186 states have (on average 1.2597847071900778) internal successors, (43067), 34822 states have internal predecessors, (43067), 6209 states have call successors, (6209), 6209 states have call predecessors, (6209), 6843 states have return successors, (11481), 6207 states have call predecessors, (11481), 6208 states have call successors, (11481) [2023-04-02 05:20:52,431 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 47239 states to 47239 states and 60757 transitions. [2023-04-02 05:20:52,442 INFO L78 Accepts]: Start accepts. Automaton has 47239 states and 60757 transitions. Word has length 144 [2023-04-02 05:20:52,443 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-02 05:20:52,443 INFO L495 AbstractCegarLoop]: Abstraction has 47239 states and 60757 transitions. [2023-04-02 05:20:52,443 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 19.8) internal successors, (99), 5 states have internal predecessors, (99), 3 states have call successors, (14), 4 states have call predecessors, (14), 4 states have return successors, (13), 3 states have call predecessors, (13), 3 states have call successors, (13) [2023-04-02 05:20:52,443 INFO L276 IsEmpty]: Start isEmpty. Operand 47239 states and 60757 transitions. [2023-04-02 05:20:52,448 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 145 [2023-04-02 05:20:52,448 INFO L187 NwaCegarLoop]: Found error trace [2023-04-02 05:20:52,448 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2023-04-02 05:20:52,455 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2023-04-02 05:20:52,650 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable23 [2023-04-02 05:20:52,651 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-02 05:20:52,651 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-02 05:20:52,651 INFO L85 PathProgramCache]: Analyzing trace with hash -557910251, now seen corresponding path program 2 times [2023-04-02 05:20:52,651 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-02 05:20:52,651 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1752905492] [2023-04-02 05:20:52,651 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 05:20:52,651 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-02 05:20:52,674 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:20:53,220 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-02 05:20:53,223 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:20:53,234 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2023-04-02 05:20:53,237 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:20:53,268 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2023-04-02 05:20:53,269 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:20:53,287 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2023-04-02 05:20:53,289 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:20:53,313 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2023-04-02 05:20:53,315 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:20:53,335 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2023-04-02 05:20:53,336 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:20:53,357 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2023-04-02 05:20:53,359 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:20:53,381 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2023-04-02 05:20:53,383 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:20:53,453 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2023-04-02 05:20:53,454 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:20:53,455 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2023-04-02 05:20:53,456 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:20:53,457 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2023-04-02 05:20:53,458 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:20:53,504 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2023-04-02 05:20:53,506 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:20:53,507 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 110 [2023-04-02 05:20:53,508 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:20:53,508 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 117 [2023-04-02 05:20:53,509 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:20:53,510 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 122 [2023-04-02 05:20:53,511 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:20:53,512 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 130 [2023-04-02 05:20:53,513 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:20:53,514 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 13 proven. 5 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2023-04-02 05:20:53,514 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-02 05:20:53,514 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1752905492] [2023-04-02 05:20:53,514 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1752905492] provided 0 perfect and 1 imperfect interpolant sequences [2023-04-02 05:20:53,514 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [220384210] [2023-04-02 05:20:53,514 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-04-02 05:20:53,515 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-02 05:20:53,515 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-04-02 05:20:53,517 INFO L229 MonitoredProcess]: Starting monitored process 12 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-04-02 05:20:53,524 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2023-04-02 05:20:53,684 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-04-02 05:20:53,684 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-04-02 05:20:53,687 INFO L262 TraceCheckSpWp]: Trace formula consists of 943 conjuncts, 6 conjunts are in the unsatisfiable core [2023-04-02 05:20:53,690 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-04-02 05:20:53,799 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 21 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2023-04-02 05:20:53,799 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-04-02 05:20:53,799 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [220384210] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-02 05:20:53,799 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-04-02 05:20:53,799 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [21] total 24 [2023-04-02 05:20:53,799 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1668610760] [2023-04-02 05:20:53,800 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-02 05:20:53,800 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-04-02 05:20:53,800 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-02 05:20:53,800 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-04-02 05:20:53,801 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=59, Invalid=493, Unknown=0, NotChecked=0, Total=552 [2023-04-02 05:20:53,801 INFO L87 Difference]: Start difference. First operand 47239 states and 60757 transitions. Second operand has 5 states, 5 states have (on average 20.2) internal successors, (101), 5 states have internal predecessors, (101), 3 states have call successors, (15), 4 states have call predecessors, (15), 4 states have return successors, (14), 3 states have call predecessors, (14), 3 states have call successors, (14) [2023-04-02 05:20:58,476 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-02 05:20:58,476 INFO L93 Difference]: Finished difference Result 70392 states and 90479 transitions. [2023-04-02 05:20:58,476 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-04-02 05:20:58,476 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 20.2) internal successors, (101), 5 states have internal predecessors, (101), 3 states have call successors, (15), 4 states have call predecessors, (15), 4 states have return successors, (14), 3 states have call predecessors, (14), 3 states have call successors, (14) Word has length 144 [2023-04-02 05:20:58,477 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-02 05:20:58,534 INFO L225 Difference]: With dead ends: 70392 [2023-04-02 05:20:58,534 INFO L226 Difference]: Without dead ends: 23276 [2023-04-02 05:20:58,593 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 191 GetRequests, 166 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 84 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=71, Invalid=631, Unknown=0, NotChecked=0, Total=702 [2023-04-02 05:20:58,593 INFO L413 NwaCegarLoop]: 41 mSDtfsCounter, 170 mSDsluCounter, 47 mSDsCounter, 0 mSdLazyCounter, 382 mSolverCounterSat, 18 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 173 SdHoareTripleChecker+Valid, 88 SdHoareTripleChecker+Invalid, 400 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 18 IncrementalHoareTripleChecker+Valid, 382 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-04-02 05:20:58,593 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [173 Valid, 88 Invalid, 400 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [18 Valid, 382 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-04-02 05:20:58,611 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23276 states. [2023-04-02 05:21:02,795 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23276 to 23274. [2023-04-02 05:21:02,813 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 23274 states, 16812 states have (on average 1.2422079467047347) internal successors, (20884), 17125 states have internal predecessors, (20884), 3075 states have call successors, (3075), 3075 states have call predecessors, (3075), 3386 states have return successors, (5171), 3073 states have call predecessors, (5171), 3074 states have call successors, (5171) [2023-04-02 05:21:02,859 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23274 states to 23274 states and 29130 transitions. [2023-04-02 05:21:02,865 INFO L78 Accepts]: Start accepts. Automaton has 23274 states and 29130 transitions. Word has length 144 [2023-04-02 05:21:02,868 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-02 05:21:02,869 INFO L495 AbstractCegarLoop]: Abstraction has 23274 states and 29130 transitions. [2023-04-02 05:21:02,869 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 20.2) internal successors, (101), 5 states have internal predecessors, (101), 3 states have call successors, (15), 4 states have call predecessors, (15), 4 states have return successors, (14), 3 states have call predecessors, (14), 3 states have call successors, (14) [2023-04-02 05:21:02,869 INFO L276 IsEmpty]: Start isEmpty. Operand 23274 states and 29130 transitions. [2023-04-02 05:21:02,872 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 145 [2023-04-02 05:21:02,873 INFO L187 NwaCegarLoop]: Found error trace [2023-04-02 05:21:02,873 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2023-04-02 05:21:02,880 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2023-04-02 05:21:03,073 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable24 [2023-04-02 05:21:03,074 INFO L420 AbstractCegarLoop]: === Iteration 26 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-02 05:21:03,074 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-02 05:21:03,074 INFO L85 PathProgramCache]: Analyzing trace with hash -415665067, now seen corresponding path program 3 times [2023-04-02 05:21:03,074 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-02 05:21:03,074 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2118369329] [2023-04-02 05:21:03,074 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 05:21:03,074 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-02 05:21:03,089 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:21:03,423 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-02 05:21:03,426 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:21:03,434 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2023-04-02 05:21:03,436 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:21:03,464 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2023-04-02 05:21:03,465 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:21:03,479 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2023-04-02 05:21:03,480 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:21:03,507 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2023-04-02 05:21:03,509 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat