/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.6.1.ufo.UNBOUNDED.pals.c -------------------------------------------------------------------------------- This is Ultimate 0.2.3-dev-f954360 [2023-04-02 05:19:09,383 INFO L177 SettingsManager]: Resetting all preferences to default values... [2023-04-02 05:19:09,385 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2023-04-02 05:19:09,417 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2023-04-02 05:19:09,417 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2023-04-02 05:19:09,419 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2023-04-02 05:19:09,422 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2023-04-02 05:19:09,425 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2023-04-02 05:19:09,426 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2023-04-02 05:19:09,430 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2023-04-02 05:19:09,431 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2023-04-02 05:19:09,432 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2023-04-02 05:19:09,432 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2023-04-02 05:19:09,434 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2023-04-02 05:19:09,435 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2023-04-02 05:19:09,436 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2023-04-02 05:19:09,436 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2023-04-02 05:19:09,437 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2023-04-02 05:19:09,438 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2023-04-02 05:19:09,442 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2023-04-02 05:19:09,443 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2023-04-02 05:19:09,444 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2023-04-02 05:19:09,444 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2023-04-02 05:19:09,445 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2023-04-02 05:19:09,451 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2023-04-02 05:19:09,451 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2023-04-02 05:19:09,452 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2023-04-02 05:19:09,453 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2023-04-02 05:19:09,453 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2023-04-02 05:19:09,454 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2023-04-02 05:19:09,454 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2023-04-02 05:19:09,454 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2023-04-02 05:19:09,455 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2023-04-02 05:19:09,456 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2023-04-02 05:19:09,456 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2023-04-02 05:19:09,456 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2023-04-02 05:19:09,457 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2023-04-02 05:19:09,457 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2023-04-02 05:19:09,457 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2023-04-02 05:19:09,458 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2023-04-02 05:19:09,458 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2023-04-02 05:19:09,459 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 05:19:09,480 INFO L113 SettingsManager]: Loading preferences was successful [2023-04-02 05:19:09,480 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2023-04-02 05:19:09,480 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-04-02 05:19:09,480 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-04-02 05:19:09,481 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-04-02 05:19:09,481 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-04-02 05:19:09,482 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-04-02 05:19:09,482 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2023-04-02 05:19:09,482 INFO L138 SettingsManager]: * Use SBE=true [2023-04-02 05:19:09,482 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-04-02 05:19:09,483 INFO L138 SettingsManager]: * sizeof long=4 [2023-04-02 05:19:09,483 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2023-04-02 05:19:09,483 INFO L138 SettingsManager]: * sizeof POINTER=4 [2023-04-02 05:19:09,483 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2023-04-02 05:19:09,483 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-04-02 05:19:09,483 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-04-02 05:19:09,483 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-04-02 05:19:09,484 INFO L138 SettingsManager]: * sizeof long double=12 [2023-04-02 05:19:09,484 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2023-04-02 05:19:09,484 INFO L138 SettingsManager]: * Use constant arrays=true [2023-04-02 05:19:09,484 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-04-02 05:19:09,484 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-04-02 05:19:09,484 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-04-02 05:19:09,484 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2023-04-02 05:19:09,484 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-04-02 05:19:09,485 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-04-02 05:19:09,485 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-04-02 05:19:09,485 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-04-02 05:19:09,485 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2023-04-02 05:19:09,485 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-04-02 05:19:09,485 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-04-02 05:19:09,485 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-04-02 05:19:09,486 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-04-02 05:19:09,486 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-04-02 05:19:09,486 INFO L138 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-04-02 05:19:09,486 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2023-04-02 05:19:09,679 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-04-02 05:19:09,694 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-04-02 05:19:09,696 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-04-02 05:19:09,696 INFO L271 PluginConnector]: Initializing CDTParser... [2023-04-02 05:19:09,699 INFO L275 PluginConnector]: CDTParser initialized [2023-04-02 05:19:09,700 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/seq-mthreaded/pals_lcr.6.1.ufo.UNBOUNDED.pals.c [2023-04-02 05:19:10,713 INFO L500 CDTParser]: Created temporary CDT project at NULL [2023-04-02 05:19:10,939 INFO L351 CDTParser]: Found 1 translation units. [2023-04-02 05:19:10,939 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/seq-mthreaded/pals_lcr.6.1.ufo.UNBOUNDED.pals.c [2023-04-02 05:19:10,946 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/df9b8fa89/3f2257043782416aa58ec8402220c0cc/FLAG65b219ca0 [2023-04-02 05:19:10,959 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/df9b8fa89/3f2257043782416aa58ec8402220c0cc [2023-04-02 05:19:10,961 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-04-02 05:19:10,962 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2023-04-02 05:19:10,963 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-04-02 05:19:10,963 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-04-02 05:19:10,965 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2023-04-02 05:19:10,965 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.04 05:19:10" (1/1) ... [2023-04-02 05:19:10,966 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7be000df and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.04 05:19:10, skipping insertion in model container [2023-04-02 05:19:10,966 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.04 05:19:10" (1/1) ... [2023-04-02 05:19:10,970 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2023-04-02 05:19:10,997 INFO L178 MainTranslator]: Built tables and reachable declarations [2023-04-02 05:19:11,179 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.6.1.ufo.UNBOUNDED.pals.c[15140,15153] [2023-04-02 05:19:11,182 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-04-02 05:19:11,189 INFO L203 MainTranslator]: Completed pre-run [2023-04-02 05:19:11,235 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.6.1.ufo.UNBOUNDED.pals.c[15140,15153] [2023-04-02 05:19:11,235 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-04-02 05:19:11,247 INFO L208 MainTranslator]: Completed translation [2023-04-02 05:19:11,247 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.04 05:19:11 WrapperNode [2023-04-02 05:19:11,247 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-04-02 05:19:11,248 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-04-02 05:19:11,248 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2023-04-02 05:19:11,248 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2023-04-02 05:19:11,256 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.04 05:19:11" (1/1) ... [2023-04-02 05:19:11,256 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.04 05:19:11" (1/1) ... [2023-04-02 05:19:11,263 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.04 05:19:11" (1/1) ... [2023-04-02 05:19:11,263 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.04 05:19:11" (1/1) ... [2023-04-02 05:19:11,271 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.04 05:19:11" (1/1) ... [2023-04-02 05:19:11,276 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.04 05:19:11" (1/1) ... [2023-04-02 05:19:11,278 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.04 05:19:11" (1/1) ... [2023-04-02 05:19:11,279 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.04 05:19:11" (1/1) ... [2023-04-02 05:19:11,281 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-04-02 05:19:11,286 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-04-02 05:19:11,286 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2023-04-02 05:19:11,286 INFO L275 PluginConnector]: RCFGBuilder initialized [2023-04-02 05:19:11,286 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.04 05:19:11" (1/1) ... [2023-04-02 05:19:11,290 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-04-02 05:19:11,297 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-04-02 05:19:11,307 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 05:19:11,324 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 05:19:11,341 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2023-04-02 05:19:11,341 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-04-02 05:19:11,342 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2023-04-02 05:19:11,342 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2023-04-02 05:19:11,342 INFO L138 BoogieDeclarations]: Found implementation of procedure node1 [2023-04-02 05:19:11,342 INFO L138 BoogieDeclarations]: Found implementation of procedure node2 [2023-04-02 05:19:11,342 INFO L138 BoogieDeclarations]: Found implementation of procedure node3 [2023-04-02 05:19:11,342 INFO L138 BoogieDeclarations]: Found implementation of procedure node4 [2023-04-02 05:19:11,342 INFO L138 BoogieDeclarations]: Found implementation of procedure node5 [2023-04-02 05:19:11,342 INFO L138 BoogieDeclarations]: Found implementation of procedure node6 [2023-04-02 05:19:11,342 INFO L138 BoogieDeclarations]: Found implementation of procedure init [2023-04-02 05:19:11,342 INFO L138 BoogieDeclarations]: Found implementation of procedure check [2023-04-02 05:19:11,343 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2023-04-02 05:19:11,343 INFO L138 BoogieDeclarations]: Found implementation of procedure assert [2023-04-02 05:19:11,343 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2023-04-02 05:19:11,343 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2023-04-02 05:19:11,343 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2023-04-02 05:19:11,343 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-04-02 05:19:11,343 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_bool [2023-04-02 05:19:11,343 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_char [2023-04-02 05:19:11,343 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_uchar [2023-04-02 05:19:11,343 INFO L130 BoogieDeclarations]: Found specification of procedure assert [2023-04-02 05:19:11,344 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2023-04-02 05:19:11,344 INFO L130 BoogieDeclarations]: Found specification of procedure read [2023-04-02 05:19:11,344 INFO L130 BoogieDeclarations]: Found specification of procedure write [2023-04-02 05:19:11,344 INFO L130 BoogieDeclarations]: Found specification of procedure node1 [2023-04-02 05:19:11,344 INFO L130 BoogieDeclarations]: Found specification of procedure node2 [2023-04-02 05:19:11,344 INFO L130 BoogieDeclarations]: Found specification of procedure node3 [2023-04-02 05:19:11,344 INFO L130 BoogieDeclarations]: Found specification of procedure node4 [2023-04-02 05:19:11,344 INFO L130 BoogieDeclarations]: Found specification of procedure node5 [2023-04-02 05:19:11,344 INFO L130 BoogieDeclarations]: Found specification of procedure node6 [2023-04-02 05:19:11,344 INFO L130 BoogieDeclarations]: Found specification of procedure init [2023-04-02 05:19:11,345 INFO L130 BoogieDeclarations]: Found specification of procedure check [2023-04-02 05:19:11,345 INFO L130 BoogieDeclarations]: Found specification of procedure main [2023-04-02 05:19:11,345 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2023-04-02 05:19:11,345 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-04-02 05:19:11,345 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-04-02 05:19:11,345 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-04-02 05:19:11,345 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-04-02 05:19:11,345 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-04-02 05:19:11,489 INFO L236 CfgBuilder]: Building ICFG [2023-04-02 05:19:11,491 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-04-02 05:19:11,936 INFO L277 CfgBuilder]: Performing block encoding [2023-04-02 05:19:11,942 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-04-02 05:19:11,942 INFO L302 CfgBuilder]: Removed 1 assume(true) statements. [2023-04-02 05:19:11,943 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.04 05:19:11 BoogieIcfgContainer [2023-04-02 05:19:11,943 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-04-02 05:19:11,945 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-04-02 05:19:11,945 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2023-04-02 05:19:11,947 INFO L275 PluginConnector]: TraceAbstraction initialized [2023-04-02 05:19:11,948 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 02.04 05:19:10" (1/3) ... [2023-04-02 05:19:11,948 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@f1a0c6a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.04 05:19:11, skipping insertion in model container [2023-04-02 05:19:11,948 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.04 05:19:11" (2/3) ... [2023-04-02 05:19:11,948 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@f1a0c6a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.04 05:19:11, skipping insertion in model container [2023-04-02 05:19:11,948 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.04 05:19:11" (3/3) ... [2023-04-02 05:19:11,949 INFO L112 eAbstractionObserver]: Analyzing ICFG pals_lcr.6.1.ufo.UNBOUNDED.pals.c [2023-04-02 05:19:11,962 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-04-02 05:19:11,962 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-04-02 05:19:11,996 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-04-02 05:19:12,000 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;@3208d08, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-04-02 05:19:12,001 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-04-02 05:19:12,005 INFO L276 IsEmpty]: Start isEmpty. Operand has 139 states, 113 states have (on average 1.663716814159292) internal successors, (188), 115 states have internal predecessors, (188), 12 states have call successors, (12), 12 states have call predecessors, (12), 12 states have return successors, (12), 12 states have call predecessors, (12), 12 states have call successors, (12) [2023-04-02 05:19:12,012 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2023-04-02 05:19:12,012 INFO L187 NwaCegarLoop]: Found error trace [2023-04-02 05:19:12,012 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] [2023-04-02 05:19:12,013 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-02 05:19:12,016 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-02 05:19:12,016 INFO L85 PathProgramCache]: Analyzing trace with hash 1148041867, now seen corresponding path program 1 times [2023-04-02 05:19:12,022 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-02 05:19:12,022 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1664562927] [2023-04-02 05:19:12,022 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 05:19:12,023 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-02 05:19:12,221 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:19:12,443 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-02 05:19:12,454 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:19:12,473 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2023-04-02 05:19:12,475 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:19:12,477 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2023-04-02 05:19:12,478 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:19:12,508 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2023-04-02 05:19:12,511 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:19:12,528 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2023-04-02 05:19:12,531 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:19:12,543 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2023-04-02 05:19:12,551 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:19:12,570 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2023-04-02 05:19:12,575 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:19:12,600 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2023-04-02 05:19:12,607 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:19:12,629 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2023-04-02 05:19:12,632 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:19:12,641 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2023-04-02 05:19:12,644 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:19:12,649 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 05:19:12,650 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-02 05:19:12,650 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1664562927] [2023-04-02 05:19:12,651 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1664562927] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-02 05:19:12,651 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-02 05:19:12,651 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2023-04-02 05:19:12,652 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1904563210] [2023-04-02 05:19:12,652 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-02 05:19:12,656 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-04-02 05:19:12,656 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-02 05:19:12,688 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-04-02 05:19:12,689 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2023-04-02 05:19:12,692 INFO L87 Difference]: Start difference. First operand has 139 states, 113 states have (on average 1.663716814159292) internal successors, (188), 115 states have internal predecessors, (188), 12 states have call successors, (12), 12 states have call predecessors, (12), 12 states have return successors, (12), 12 states have call predecessors, (12), 12 states have call successors, (12) Second operand has 9 states, 9 states have (on average 4.444444444444445) internal successors, (40), 2 states have internal predecessors, (40), 2 states have call successors, (12), 9 states have call predecessors, (12), 2 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) [2023-04-02 05:19:13,571 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-02 05:19:13,571 INFO L93 Difference]: Finished difference Result 219 states and 326 transitions. [2023-04-02 05:19:13,572 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-04-02 05:19:13,573 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 4.444444444444445) internal successors, (40), 2 states have internal predecessors, (40), 2 states have call successors, (12), 9 states have call predecessors, (12), 2 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) Word has length 62 [2023-04-02 05:19:13,574 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-02 05:19:13,579 INFO L225 Difference]: With dead ends: 219 [2023-04-02 05:19:13,579 INFO L226 Difference]: Without dead ends: 135 [2023-04-02 05:19:13,582 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=69, Invalid=141, Unknown=0, NotChecked=0, Total=210 [2023-04-02 05:19:13,584 INFO L413 NwaCegarLoop]: 30 mSDtfsCounter, 529 mSDsluCounter, 30 mSDsCounter, 0 mSdLazyCounter, 373 mSolverCounterSat, 22 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 529 SdHoareTripleChecker+Valid, 60 SdHoareTripleChecker+Invalid, 395 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 22 IncrementalHoareTripleChecker+Valid, 373 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2023-04-02 05:19:13,585 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [529 Valid, 60 Invalid, 395 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [22 Valid, 373 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2023-04-02 05:19:13,597 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 135 states. [2023-04-02 05:19:13,622 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 135 to 134. [2023-04-02 05:19:13,623 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 134 states, 110 states have (on average 1.6454545454545455) internal successors, (181), 111 states have internal predecessors, (181), 12 states have call successors, (12), 12 states have call predecessors, (12), 11 states have return successors, (11), 11 states have call predecessors, (11), 11 states have call successors, (11) [2023-04-02 05:19:13,628 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 134 states to 134 states and 204 transitions. [2023-04-02 05:19:13,630 INFO L78 Accepts]: Start accepts. Automaton has 134 states and 204 transitions. Word has length 62 [2023-04-02 05:19:13,630 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-02 05:19:13,631 INFO L495 AbstractCegarLoop]: Abstraction has 134 states and 204 transitions. [2023-04-02 05:19:13,631 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 4.444444444444445) internal successors, (40), 2 states have internal predecessors, (40), 2 states have call successors, (12), 9 states have call predecessors, (12), 2 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) [2023-04-02 05:19:13,631 INFO L276 IsEmpty]: Start isEmpty. Operand 134 states and 204 transitions. [2023-04-02 05:19:13,640 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2023-04-02 05:19:13,641 INFO L187 NwaCegarLoop]: Found error trace [2023-04-02 05:19:13,641 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-02 05:19:13,642 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-04-02 05:19:13,644 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-02 05:19:13,647 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-02 05:19:13,647 INFO L85 PathProgramCache]: Analyzing trace with hash 794953485, now seen corresponding path program 1 times [2023-04-02 05:19:13,647 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-02 05:19:13,648 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [436012552] [2023-04-02 05:19:13,648 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 05:19:13,648 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-02 05:19:13,675 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:19:13,877 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-02 05:19:13,880 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:19:13,885 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2023-04-02 05:19:13,888 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:19:13,922 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2023-04-02 05:19:13,928 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:19:13,961 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2023-04-02 05:19:13,965 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:19:13,980 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2023-04-02 05:19:13,982 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:19:13,997 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2023-04-02 05:19:13,999 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:19:14,016 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2023-04-02 05:19:14,019 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:19:14,036 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2023-04-02 05:19:14,038 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:19:14,058 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2023-04-02 05:19:14,064 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:19:14,066 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2023-04-02 05:19:14,067 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:19:14,069 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 05:19:14,069 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-02 05:19:14,070 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [436012552] [2023-04-02 05:19:14,070 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [436012552] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-02 05:19:14,070 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-02 05:19:14,070 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2023-04-02 05:19:14,070 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [789086760] [2023-04-02 05:19:14,070 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-02 05:19:14,071 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2023-04-02 05:19:14,071 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-02 05:19:14,072 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2023-04-02 05:19:14,072 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=177, Unknown=0, NotChecked=0, Total=210 [2023-04-02 05:19:14,073 INFO L87 Difference]: Start difference. First operand 134 states and 204 transitions. Second operand has 15 states, 14 states have (on average 2.857142857142857) internal successors, (40), 7 states have internal predecessors, (40), 3 states have call successors, (12), 9 states have call predecessors, (12), 3 states have return successors, (10), 3 states have call predecessors, (10), 3 states have call successors, (10) [2023-04-02 05:19:15,618 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-02 05:19:15,619 INFO L93 Difference]: Finished difference Result 217 states and 318 transitions. [2023-04-02 05:19:15,619 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-04-02 05:19:15,619 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 14 states have (on average 2.857142857142857) internal successors, (40), 7 states have internal predecessors, (40), 3 states have call successors, (12), 9 states have call predecessors, (12), 3 states have return successors, (10), 3 states have call predecessors, (10), 3 states have call successors, (10) Word has length 62 [2023-04-02 05:19:15,619 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-02 05:19:15,621 INFO L225 Difference]: With dead ends: 217 [2023-04-02 05:19:15,621 INFO L226 Difference]: Without dead ends: 135 [2023-04-02 05:19:15,621 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 67 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=149, Invalid=451, Unknown=0, NotChecked=0, Total=600 [2023-04-02 05:19:15,622 INFO L413 NwaCegarLoop]: 28 mSDtfsCounter, 426 mSDsluCounter, 130 mSDsCounter, 0 mSdLazyCounter, 1477 mSolverCounterSat, 52 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 434 SdHoareTripleChecker+Valid, 158 SdHoareTripleChecker+Invalid, 1529 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 52 IncrementalHoareTripleChecker+Valid, 1477 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2023-04-02 05:19:15,622 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [434 Valid, 158 Invalid, 1529 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [52 Valid, 1477 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2023-04-02 05:19:15,623 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 135 states. [2023-04-02 05:19:15,651 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 135 to 134. [2023-04-02 05:19:15,651 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 134 states, 110 states have (on average 1.2818181818181817) internal successors, (141), 111 states have internal predecessors, (141), 12 states have call successors, (12), 12 states have call predecessors, (12), 11 states have return successors, (11), 11 states have call predecessors, (11), 11 states have call successors, (11) [2023-04-02 05:19:15,652 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 134 states to 134 states and 164 transitions. [2023-04-02 05:19:15,652 INFO L78 Accepts]: Start accepts. Automaton has 134 states and 164 transitions. Word has length 62 [2023-04-02 05:19:15,652 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-02 05:19:15,652 INFO L495 AbstractCegarLoop]: Abstraction has 134 states and 164 transitions. [2023-04-02 05:19:15,653 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 14 states have (on average 2.857142857142857) internal successors, (40), 7 states have internal predecessors, (40), 3 states have call successors, (12), 9 states have call predecessors, (12), 3 states have return successors, (10), 3 states have call predecessors, (10), 3 states have call successors, (10) [2023-04-02 05:19:15,653 INFO L276 IsEmpty]: Start isEmpty. Operand 134 states and 164 transitions. [2023-04-02 05:19:15,654 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 102 [2023-04-02 05:19:15,654 INFO L187 NwaCegarLoop]: Found error trace [2023-04-02 05:19:15,654 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-02 05:19:15,654 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-04-02 05:19:15,654 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-02 05:19:15,654 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-02 05:19:15,654 INFO L85 PathProgramCache]: Analyzing trace with hash 504454448, now seen corresponding path program 1 times [2023-04-02 05:19:15,655 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-02 05:19:15,655 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [721061870] [2023-04-02 05:19:15,655 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 05:19:15,655 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-02 05:19:15,685 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:19:16,035 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-02 05:19:16,039 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:19:16,042 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2023-04-02 05:19:16,045 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:19:16,103 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2023-04-02 05:19:16,105 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:19:16,117 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2023-04-02 05:19:16,122 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:19:16,158 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2023-04-02 05:19:16,164 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:19:16,191 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2023-04-02 05:19:16,193 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:19:16,225 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2023-04-02 05:19:16,228 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:19:16,272 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2023-04-02 05:19:16,274 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:19:16,308 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2023-04-02 05:19:16,310 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:19:16,347 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2023-04-02 05:19:16,350 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:19:16,375 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 05:19:16,375 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-02 05:19:16,375 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [721061870] [2023-04-02 05:19:16,375 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [721061870] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-02 05:19:16,376 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-02 05:19:16,376 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [22] imperfect sequences [] total 22 [2023-04-02 05:19:16,376 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1673912134] [2023-04-02 05:19:16,376 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-02 05:19:16,377 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2023-04-02 05:19:16,377 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-02 05:19:16,378 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2023-04-02 05:19:16,378 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=59, Invalid=403, Unknown=0, NotChecked=0, Total=462 [2023-04-02 05:19:16,378 INFO L87 Difference]: Start difference. First operand 134 states and 164 transitions. Second operand has 22 states, 22 states have (on average 3.590909090909091) internal successors, (79), 15 states have internal predecessors, (79), 3 states have call successors, (12), 9 states have call predecessors, (12), 9 states have return successors, (10), 3 states have call predecessors, (10), 2 states have call successors, (10) [2023-04-02 05:19:29,476 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-02 05:19:29,476 INFO L93 Difference]: Finished difference Result 1562 states and 2224 transitions. [2023-04-02 05:19:29,477 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 167 states. [2023-04-02 05:19:29,477 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 22 states have (on average 3.590909090909091) internal successors, (79), 15 states have internal predecessors, (79), 3 states have call successors, (12), 9 states have call predecessors, (12), 9 states have return successors, (10), 3 states have call predecessors, (10), 2 states have call successors, (10) Word has length 101 [2023-04-02 05:19:29,478 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-02 05:19:29,489 INFO L225 Difference]: With dead ends: 1562 [2023-04-02 05:19:29,489 INFO L226 Difference]: Without dead ends: 1486 [2023-04-02 05:19:29,509 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 215 GetRequests, 34 SyntacticMatches, 0 SemanticMatches, 181 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12808 ImplicationChecksByTransitivity, 9.5s TimeCoverageRelationStatistics Valid=4801, Invalid=28505, Unknown=0, NotChecked=0, Total=33306 [2023-04-02 05:19:29,511 INFO L413 NwaCegarLoop]: 65 mSDtfsCounter, 5954 mSDsluCounter, 247 mSDsCounter, 0 mSdLazyCounter, 4269 mSolverCounterSat, 744 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5969 SdHoareTripleChecker+Valid, 312 SdHoareTripleChecker+Invalid, 5013 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 744 IncrementalHoareTripleChecker+Valid, 4269 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.4s IncrementalHoareTripleChecker+Time [2023-04-02 05:19:29,513 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5969 Valid, 312 Invalid, 5013 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [744 Valid, 4269 Invalid, 0 Unknown, 0 Unchecked, 3.4s Time] [2023-04-02 05:19:29,516 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1486 states. [2023-04-02 05:19:29,622 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1486 to 532. [2023-04-02 05:19:29,623 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 532 states, 416 states have (on average 1.4134615384615385) internal successors, (588), 429 states have internal predecessors, (588), 52 states have call successors, (52), 52 states have call predecessors, (52), 63 states have return successors, (91), 51 states have call predecessors, (91), 51 states have call successors, (91) [2023-04-02 05:19:29,626 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 532 states to 532 states and 731 transitions. [2023-04-02 05:19:29,626 INFO L78 Accepts]: Start accepts. Automaton has 532 states and 731 transitions. Word has length 101 [2023-04-02 05:19:29,626 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-02 05:19:29,626 INFO L495 AbstractCegarLoop]: Abstraction has 532 states and 731 transitions. [2023-04-02 05:19:29,626 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 22 states have (on average 3.590909090909091) internal successors, (79), 15 states have internal predecessors, (79), 3 states have call successors, (12), 9 states have call predecessors, (12), 9 states have return successors, (10), 3 states have call predecessors, (10), 2 states have call successors, (10) [2023-04-02 05:19:29,627 INFO L276 IsEmpty]: Start isEmpty. Operand 532 states and 731 transitions. [2023-04-02 05:19:29,632 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 104 [2023-04-02 05:19:29,633 INFO L187 NwaCegarLoop]: Found error trace [2023-04-02 05:19:29,633 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-02 05:19:29,633 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-04-02 05:19:29,633 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-02 05:19:29,634 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-02 05:19:29,634 INFO L85 PathProgramCache]: Analyzing trace with hash 1153614848, now seen corresponding path program 1 times [2023-04-02 05:19:29,634 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-02 05:19:29,634 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1027534615] [2023-04-02 05:19:29,634 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 05:19:29,634 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-02 05:19:29,664 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:19:29,789 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-02 05:19:29,792 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:19:29,806 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2023-04-02 05:19:29,808 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:19:29,812 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2023-04-02 05:19:29,812 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:19:29,820 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2023-04-02 05:19:29,821 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:19:29,834 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2023-04-02 05:19:29,835 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:19:29,844 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2023-04-02 05:19:29,845 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:19:29,855 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2023-04-02 05:19:29,856 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:19:29,868 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2023-04-02 05:19:29,870 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:19:29,881 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2023-04-02 05:19:29,882 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:19:29,885 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2023-04-02 05:19:29,887 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:19:29,898 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 05:19:29,898 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-02 05:19:29,898 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1027534615] [2023-04-02 05:19:29,898 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1027534615] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-02 05:19:29,898 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-02 05:19:29,898 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2023-04-02 05:19:29,898 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [242516455] [2023-04-02 05:19:29,898 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-02 05:19:29,899 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-04-02 05:19:29,899 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-02 05:19:29,900 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-04-02 05:19:29,900 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2023-04-02 05:19:29,900 INFO L87 Difference]: Start difference. First operand 532 states and 731 transitions. Second operand has 10 states, 10 states have (on average 8.1) internal successors, (81), 3 states have internal predecessors, (81), 2 states have call successors, (12), 9 states have call predecessors, (12), 2 states have return successors, (10), 2 states have call predecessors, (10), 1 states have call successors, (10) [2023-04-02 05:19:31,224 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-02 05:19:31,224 INFO L93 Difference]: Finished difference Result 1446 states and 2039 transitions. [2023-04-02 05:19:31,225 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2023-04-02 05:19:31,225 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 8.1) internal successors, (81), 3 states have internal predecessors, (81), 2 states have call successors, (12), 9 states have call predecessors, (12), 2 states have return successors, (10), 2 states have call predecessors, (10), 1 states have call successors, (10) Word has length 103 [2023-04-02 05:19:31,225 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-02 05:19:31,229 INFO L225 Difference]: With dead ends: 1446 [2023-04-02 05:19:31,229 INFO L226 Difference]: Without dead ends: 972 [2023-04-02 05:19:31,231 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 49 GetRequests, 28 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 72 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=147, Invalid=359, Unknown=0, NotChecked=0, Total=506 [2023-04-02 05:19:31,231 INFO L413 NwaCegarLoop]: 43 mSDtfsCounter, 900 mSDsluCounter, 61 mSDsCounter, 0 mSdLazyCounter, 620 mSolverCounterSat, 75 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 906 SdHoareTripleChecker+Valid, 104 SdHoareTripleChecker+Invalid, 695 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 75 IncrementalHoareTripleChecker+Valid, 620 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2023-04-02 05:19:31,231 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [906 Valid, 104 Invalid, 695 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [75 Valid, 620 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2023-04-02 05:19:31,232 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 972 states. [2023-04-02 05:19:31,333 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 972 to 952. [2023-04-02 05:19:31,334 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 952 states, 730 states have (on average 1.4164383561643836) internal successors, (1034), 753 states have internal predecessors, (1034), 100 states have call successors, (100), 100 states have call predecessors, (100), 121 states have return successors, (189), 99 states have call predecessors, (189), 99 states have call successors, (189) [2023-04-02 05:19:31,338 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 952 states to 952 states and 1323 transitions. [2023-04-02 05:19:31,338 INFO L78 Accepts]: Start accepts. Automaton has 952 states and 1323 transitions. Word has length 103 [2023-04-02 05:19:31,338 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-02 05:19:31,338 INFO L495 AbstractCegarLoop]: Abstraction has 952 states and 1323 transitions. [2023-04-02 05:19:31,338 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 8.1) internal successors, (81), 3 states have internal predecessors, (81), 2 states have call successors, (12), 9 states have call predecessors, (12), 2 states have return successors, (10), 2 states have call predecessors, (10), 1 states have call successors, (10) [2023-04-02 05:19:31,338 INFO L276 IsEmpty]: Start isEmpty. Operand 952 states and 1323 transitions. [2023-04-02 05:19:31,339 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 104 [2023-04-02 05:19:31,339 INFO L187 NwaCegarLoop]: Found error trace [2023-04-02 05:19:31,339 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-02 05:19:31,340 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-04-02 05:19:31,340 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-02 05:19:31,340 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-02 05:19:31,340 INFO L85 PathProgramCache]: Analyzing trace with hash -134087608, now seen corresponding path program 1 times [2023-04-02 05:19:31,340 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-02 05:19:31,340 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [333599049] [2023-04-02 05:19:31,340 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 05:19:31,340 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-02 05:19:31,375 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:19:31,723 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-02 05:19:31,726 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:19:31,729 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2023-04-02 05:19:31,732 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:19:31,802 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2023-04-02 05:19:31,805 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:19:31,820 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2023-04-02 05:19:31,822 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:19:31,886 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2023-04-02 05:19:31,889 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:19:31,923 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2023-04-02 05:19:31,925 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:19:31,963 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2023-04-02 05:19:31,967 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:19:32,004 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2023-04-02 05:19:32,012 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:19:32,051 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2023-04-02 05:19:32,054 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:19:32,079 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2023-04-02 05:19:32,082 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:19:32,101 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 05:19:32,101 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-02 05:19:32,101 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [333599049] [2023-04-02 05:19:32,101 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [333599049] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-02 05:19:32,101 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-02 05:19:32,101 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [22] imperfect sequences [] total 22 [2023-04-02 05:19:32,103 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [940936885] [2023-04-02 05:19:32,103 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-02 05:19:32,104 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2023-04-02 05:19:32,104 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-02 05:19:32,105 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2023-04-02 05:19:32,105 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=59, Invalid=403, Unknown=0, NotChecked=0, Total=462 [2023-04-02 05:19:32,105 INFO L87 Difference]: Start difference. First operand 952 states and 1323 transitions. Second operand has 22 states, 22 states have (on average 3.6818181818181817) internal successors, (81), 15 states have internal predecessors, (81), 3 states have call successors, (12), 9 states have call predecessors, (12), 9 states have return successors, (10), 3 states have call predecessors, (10), 2 states have call successors, (10) [2023-04-02 05:19:46,268 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-02 05:19:46,268 INFO L93 Difference]: Finished difference Result 4319 states and 6186 transitions. [2023-04-02 05:19:46,268 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 164 states. [2023-04-02 05:19:46,269 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 22 states have (on average 3.6818181818181817) internal successors, (81), 15 states have internal predecessors, (81), 3 states have call successors, (12), 9 states have call predecessors, (12), 9 states have return successors, (10), 3 states have call predecessors, (10), 2 states have call successors, (10) Word has length 103 [2023-04-02 05:19:46,269 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-02 05:19:46,284 INFO L225 Difference]: With dead ends: 4319 [2023-04-02 05:19:46,284 INFO L226 Difference]: Without dead ends: 3425 [2023-04-02 05:19:46,291 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 211 GetRequests, 32 SyntacticMatches, 1 SemanticMatches, 178 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12552 ImplicationChecksByTransitivity, 10.4s TimeCoverageRelationStatistics Valid=4683, Invalid=27537, Unknown=0, NotChecked=0, Total=32220 [2023-04-02 05:19:46,292 INFO L413 NwaCegarLoop]: 67 mSDtfsCounter, 7662 mSDsluCounter, 212 mSDsCounter, 0 mSdLazyCounter, 3918 mSolverCounterSat, 988 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7677 SdHoareTripleChecker+Valid, 279 SdHoareTripleChecker+Invalid, 4906 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 988 IncrementalHoareTripleChecker+Valid, 3918 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.3s IncrementalHoareTripleChecker+Time [2023-04-02 05:19:46,292 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [7677 Valid, 279 Invalid, 4906 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [988 Valid, 3918 Invalid, 0 Unknown, 0 Unchecked, 3.3s Time] [2023-04-02 05:19:46,294 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3425 states. [2023-04-02 05:19:46,746 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3425 to 3321. [2023-04-02 05:19:46,751 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3321 states, 2546 states have (on average 1.4536527886881383) internal successors, (3701), 2598 states have internal predecessors, (3701), 362 states have call successors, (362), 362 states have call predecessors, (362), 412 states have return successors, (714), 361 states have call predecessors, (714), 361 states have call successors, (714) [2023-04-02 05:19:46,760 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3321 states to 3321 states and 4777 transitions. [2023-04-02 05:19:46,760 INFO L78 Accepts]: Start accepts. Automaton has 3321 states and 4777 transitions. Word has length 103 [2023-04-02 05:19:46,760 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-02 05:19:46,761 INFO L495 AbstractCegarLoop]: Abstraction has 3321 states and 4777 transitions. [2023-04-02 05:19:46,761 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 22 states have (on average 3.6818181818181817) internal successors, (81), 15 states have internal predecessors, (81), 3 states have call successors, (12), 9 states have call predecessors, (12), 9 states have return successors, (10), 3 states have call predecessors, (10), 2 states have call successors, (10) [2023-04-02 05:19:46,761 INFO L276 IsEmpty]: Start isEmpty. Operand 3321 states and 4777 transitions. [2023-04-02 05:19:46,762 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 105 [2023-04-02 05:19:46,762 INFO L187 NwaCegarLoop]: Found error trace [2023-04-02 05:19:46,763 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-02 05:19:46,763 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-04-02 05:19:46,763 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-02 05:19:46,763 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-02 05:19:46,763 INFO L85 PathProgramCache]: Analyzing trace with hash -432301485, now seen corresponding path program 1 times [2023-04-02 05:19:46,763 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-02 05:19:46,763 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [491669518] [2023-04-02 05:19:46,763 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 05:19:46,763 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-02 05:19:46,829 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:19:47,000 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-02 05:19:47,003 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:19:47,006 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2023-04-02 05:19:47,009 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:19:47,022 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2023-04-02 05:19:47,023 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:19:47,032 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2023-04-02 05:19:47,035 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:19:47,065 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2023-04-02 05:19:47,067 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:19:47,079 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2023-04-02 05:19:47,082 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:19:47,094 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2023-04-02 05:19:47,096 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:19:47,108 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2023-04-02 05:19:47,110 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:19:47,126 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2023-04-02 05:19:47,127 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:19:47,136 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2023-04-02 05:19:47,137 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:19:47,150 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 05:19:47,150 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-02 05:19:47,150 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [491669518] [2023-04-02 05:19:47,150 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [491669518] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-02 05:19:47,150 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-02 05:19:47,150 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2023-04-02 05:19:47,151 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [469295614] [2023-04-02 05:19:47,151 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-02 05:19:47,151 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-04-02 05:19:47,151 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-02 05:19:47,152 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-04-02 05:19:47,152 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2023-04-02 05:19:47,152 INFO L87 Difference]: Start difference. First operand 3321 states and 4777 transitions. Second operand has 12 states, 12 states have (on average 6.833333333333333) internal successors, (82), 5 states have internal predecessors, (82), 3 states have call successors, (12), 9 states have call predecessors, (12), 4 states have return successors, (10), 3 states have call predecessors, (10), 2 states have call successors, (10) [2023-04-02 05:19:49,513 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-02 05:19:49,514 INFO L93 Difference]: Finished difference Result 7869 states and 11379 transitions. [2023-04-02 05:19:49,514 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2023-04-02 05:19:49,514 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 6.833333333333333) internal successors, (82), 5 states have internal predecessors, (82), 3 states have call successors, (12), 9 states have call predecessors, (12), 4 states have return successors, (10), 3 states have call predecessors, (10), 2 states have call successors, (10) Word has length 104 [2023-04-02 05:19:49,515 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-02 05:19:49,529 INFO L225 Difference]: With dead ends: 7869 [2023-04-02 05:19:49,530 INFO L226 Difference]: Without dead ends: 4606 [2023-04-02 05:19:49,536 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 64 GetRequests, 33 SyntacticMatches, 0 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 216 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=262, Invalid=794, Unknown=0, NotChecked=0, Total=1056 [2023-04-02 05:19:49,537 INFO L413 NwaCegarLoop]: 33 mSDtfsCounter, 1123 mSDsluCounter, 68 mSDsCounter, 0 mSdLazyCounter, 910 mSolverCounterSat, 62 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1131 SdHoareTripleChecker+Valid, 101 SdHoareTripleChecker+Invalid, 972 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 62 IncrementalHoareTripleChecker+Valid, 910 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2023-04-02 05:19:49,537 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1131 Valid, 101 Invalid, 972 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [62 Valid, 910 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2023-04-02 05:19:49,540 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4606 states. [2023-04-02 05:19:50,159 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4606 to 4528. [2023-04-02 05:19:50,165 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4528 states, 3452 states have (on average 1.4455388180764774) internal successors, (4990), 3537 states have internal predecessors, (4990), 496 states have call successors, (496), 496 states have call predecessors, (496), 579 states have return successors, (994), 495 states have call predecessors, (994), 495 states have call successors, (994) [2023-04-02 05:19:50,177 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4528 states to 4528 states and 6480 transitions. [2023-04-02 05:19:50,179 INFO L78 Accepts]: Start accepts. Automaton has 4528 states and 6480 transitions. Word has length 104 [2023-04-02 05:19:50,180 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-02 05:19:50,180 INFO L495 AbstractCegarLoop]: Abstraction has 4528 states and 6480 transitions. [2023-04-02 05:19:50,180 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 6.833333333333333) internal successors, (82), 5 states have internal predecessors, (82), 3 states have call successors, (12), 9 states have call predecessors, (12), 4 states have return successors, (10), 3 states have call predecessors, (10), 2 states have call successors, (10) [2023-04-02 05:19:50,180 INFO L276 IsEmpty]: Start isEmpty. Operand 4528 states and 6480 transitions. [2023-04-02 05:19:50,182 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 105 [2023-04-02 05:19:50,182 INFO L187 NwaCegarLoop]: Found error trace [2023-04-02 05:19:50,183 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-02 05:19:50,183 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-04-02 05:19:50,183 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-02 05:19:50,183 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-02 05:19:50,183 INFO L85 PathProgramCache]: Analyzing trace with hash 1215123476, now seen corresponding path program 1 times [2023-04-02 05:19:50,183 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-02 05:19:50,183 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [501993603] [2023-04-02 05:19:50,183 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 05:19:50,184 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-02 05:19:50,198 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:19:50,532 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-02 05:19:50,536 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:19:50,539 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2023-04-02 05:19:50,542 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:19:50,574 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2023-04-02 05:19:50,575 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:19:50,591 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2023-04-02 05:19:50,592 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:19:50,609 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2023-04-02 05:19:50,610 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:19:50,627 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2023-04-02 05:19:50,628 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:19:50,646 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2023-04-02 05:19:50,648 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:19:50,670 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2023-04-02 05:19:50,671 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:19:50,694 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2023-04-02 05:19:50,695 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:19:50,697 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2023-04-02 05:19:50,698 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:19:50,726 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 05:19:50,726 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-02 05:19:50,726 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [501993603] [2023-04-02 05:19:50,726 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [501993603] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-02 05:19:50,727 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-02 05:19:50,727 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [19] imperfect sequences [] total 19 [2023-04-02 05:19:50,727 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [638993207] [2023-04-02 05:19:50,727 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-02 05:19:50,727 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2023-04-02 05:19:50,727 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-02 05:19:50,728 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2023-04-02 05:19:50,728 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=301, Unknown=0, NotChecked=0, Total=342 [2023-04-02 05:19:50,728 INFO L87 Difference]: Start difference. First operand 4528 states and 6480 transitions. Second operand has 19 states, 17 states have (on average 4.823529411764706) internal successors, (82), 9 states have internal predecessors, (82), 3 states have call successors, (12), 9 states have call predecessors, (12), 3 states have return successors, (10), 3 states have call predecessors, (10), 2 states have call successors, (10) [2023-04-02 05:19:53,090 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-02 05:19:53,090 INFO L93 Difference]: Finished difference Result 4903 states and 7297 transitions. [2023-04-02 05:19:53,091 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2023-04-02 05:19:53,091 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 17 states have (on average 4.823529411764706) internal successors, (82), 9 states have internal predecessors, (82), 3 states have call successors, (12), 9 states have call predecessors, (12), 3 states have return successors, (10), 3 states have call predecessors, (10), 2 states have call successors, (10) Word has length 104 [2023-04-02 05:19:53,091 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-02 05:19:53,110 INFO L225 Difference]: With dead ends: 4903 [2023-04-02 05:19:53,111 INFO L226 Difference]: Without dead ends: 4901 [2023-04-02 05:19:53,112 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 52 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 75 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=195, Invalid=797, Unknown=0, NotChecked=0, Total=992 [2023-04-02 05:19:53,113 INFO L413 NwaCegarLoop]: 45 mSDtfsCounter, 706 mSDsluCounter, 285 mSDsCounter, 0 mSdLazyCounter, 1928 mSolverCounterSat, 57 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 715 SdHoareTripleChecker+Valid, 330 SdHoareTripleChecker+Invalid, 1985 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 57 IncrementalHoareTripleChecker+Valid, 1928 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2023-04-02 05:19:53,113 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [715 Valid, 330 Invalid, 1985 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [57 Valid, 1928 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2023-04-02 05:19:53,116 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4901 states. [2023-04-02 05:19:53,784 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4901 to 4582. [2023-04-02 05:19:53,791 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4582 states, 3488 states have (on average 1.4377866972477065) internal successors, (5015), 3579 states have internal predecessors, (5015), 502 states have call successors, (502), 502 states have call predecessors, (502), 591 states have return successors, (1012), 501 states have call predecessors, (1012), 501 states have call successors, (1012) [2023-04-02 05:19:53,800 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4582 states to 4582 states and 6529 transitions. [2023-04-02 05:19:53,801 INFO L78 Accepts]: Start accepts. Automaton has 4582 states and 6529 transitions. Word has length 104 [2023-04-02 05:19:53,801 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-02 05:19:53,801 INFO L495 AbstractCegarLoop]: Abstraction has 4582 states and 6529 transitions. [2023-04-02 05:19:53,801 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 17 states have (on average 4.823529411764706) internal successors, (82), 9 states have internal predecessors, (82), 3 states have call successors, (12), 9 states have call predecessors, (12), 3 states have return successors, (10), 3 states have call predecessors, (10), 2 states have call successors, (10) [2023-04-02 05:19:53,801 INFO L276 IsEmpty]: Start isEmpty. Operand 4582 states and 6529 transitions. [2023-04-02 05:19:53,805 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 106 [2023-04-02 05:19:53,805 INFO L187 NwaCegarLoop]: Found error trace [2023-04-02 05:19:53,805 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-02 05:19:53,805 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-04-02 05:19:53,805 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-02 05:19:53,806 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-02 05:19:53,806 INFO L85 PathProgramCache]: Analyzing trace with hash -1776423560, now seen corresponding path program 1 times [2023-04-02 05:19:53,806 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-02 05:19:53,806 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [766272520] [2023-04-02 05:19:53,806 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 05:19:53,807 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-02 05:19:53,821 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:19:53,976 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-02 05:19:53,980 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:19:54,002 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2023-04-02 05:19:54,005 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:19:54,038 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2023-04-02 05:19:54,039 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:19:54,048 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2023-04-02 05:19:54,050 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:19:54,061 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2023-04-02 05:19:54,062 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:19:54,073 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2023-04-02 05:19:54,075 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:19:54,136 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2023-04-02 05:19:54,139 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:19:54,157 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2023-04-02 05:19:54,159 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:19:54,178 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2023-04-02 05:19:54,179 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:19:54,181 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2023-04-02 05:19:54,182 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:19:54,183 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 05:19:54,183 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-02 05:19:54,183 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [766272520] [2023-04-02 05:19:54,183 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [766272520] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-02 05:19:54,184 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-02 05:19:54,184 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2023-04-02 05:19:54,184 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [44661112] [2023-04-02 05:19:54,184 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-02 05:19:54,184 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2023-04-02 05:19:54,184 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-02 05:19:54,184 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2023-04-02 05:19:54,185 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=203, Unknown=0, NotChecked=0, Total=240 [2023-04-02 05:19:54,185 INFO L87 Difference]: Start difference. First operand 4582 states and 6529 transitions. Second operand has 16 states, 16 states have (on average 5.1875) internal successors, (83), 9 states have internal predecessors, (83), 5 states have call successors, (12), 10 states have call predecessors, (12), 4 states have return successors, (10), 4 states have call predecessors, (10), 5 states have call successors, (10) [2023-04-02 05:19:57,510 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-02 05:19:57,510 INFO L93 Difference]: Finished difference Result 11450 states and 16291 transitions. [2023-04-02 05:19:57,510 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2023-04-02 05:19:57,511 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 5.1875) internal successors, (83), 9 states have internal predecessors, (83), 5 states have call successors, (12), 10 states have call predecessors, (12), 4 states have return successors, (10), 4 states have call predecessors, (10), 5 states have call successors, (10) Word has length 105 [2023-04-02 05:19:57,511 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-02 05:19:57,534 INFO L225 Difference]: With dead ends: 11450 [2023-04-02 05:19:57,534 INFO L226 Difference]: Without dead ends: 6926 [2023-04-02 05:19:57,544 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 60 GetRequests, 25 SyntacticMatches, 0 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 172 ImplicationChecksByTransitivity, 2.0s TimeCoverageRelationStatistics Valid=344, Invalid=988, Unknown=0, NotChecked=0, Total=1332 [2023-04-02 05:19:57,545 INFO L413 NwaCegarLoop]: 19 mSDtfsCounter, 1398 mSDsluCounter, 50 mSDsCounter, 0 mSdLazyCounter, 880 mSolverCounterSat, 139 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1398 SdHoareTripleChecker+Valid, 69 SdHoareTripleChecker+Invalid, 1019 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 139 IncrementalHoareTripleChecker+Valid, 880 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2023-04-02 05:19:57,545 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1398 Valid, 69 Invalid, 1019 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [139 Valid, 880 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2023-04-02 05:19:57,550 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6926 states. [2023-04-02 05:19:58,300 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6926 to 4719. [2023-04-02 05:19:58,306 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4719 states, 3584 states have (on average 1.435546875) internal successors, (5145), 3690 states have internal predecessors, (5145), 515 states have call successors, (515), 515 states have call predecessors, (515), 619 states have return successors, (1048), 513 states have call predecessors, (1048), 514 states have call successors, (1048) [2023-04-02 05:19:58,315 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4719 states to 4719 states and 6708 transitions. [2023-04-02 05:19:58,315 INFO L78 Accepts]: Start accepts. Automaton has 4719 states and 6708 transitions. Word has length 105 [2023-04-02 05:19:58,316 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-02 05:19:58,316 INFO L495 AbstractCegarLoop]: Abstraction has 4719 states and 6708 transitions. [2023-04-02 05:19:58,316 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 5.1875) internal successors, (83), 9 states have internal predecessors, (83), 5 states have call successors, (12), 10 states have call predecessors, (12), 4 states have return successors, (10), 4 states have call predecessors, (10), 5 states have call successors, (10) [2023-04-02 05:19:58,316 INFO L276 IsEmpty]: Start isEmpty. Operand 4719 states and 6708 transitions. [2023-04-02 05:19:58,318 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 106 [2023-04-02 05:19:58,318 INFO L187 NwaCegarLoop]: Found error trace [2023-04-02 05:19:58,318 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-02 05:19:58,318 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-04-02 05:19:58,318 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-02 05:19:58,318 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-02 05:19:58,318 INFO L85 PathProgramCache]: Analyzing trace with hash -1771453336, now seen corresponding path program 1 times [2023-04-02 05:19:58,318 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-02 05:19:58,318 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1698824820] [2023-04-02 05:19:58,319 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 05:19:58,319 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-02 05:19:58,331 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:19:58,507 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-02 05:19:58,510 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:19:58,518 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2023-04-02 05:19:58,521 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:19:58,536 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2023-04-02 05:19:58,537 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:19:58,549 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2023-04-02 05:19:58,550 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:19:58,563 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2023-04-02 05:19:58,564 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:19:58,577 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2023-04-02 05:19:58,579 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:19:58,593 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2023-04-02 05:19:58,594 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:19:58,642 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2023-04-02 05:19:58,644 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:19:58,663 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2023-04-02 05:19:58,665 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:19:58,666 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2023-04-02 05:19:58,667 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:19:58,667 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 05:19:58,668 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-02 05:19:58,668 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1698824820] [2023-04-02 05:19:58,668 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1698824820] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-02 05:19:58,668 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-02 05:19:58,668 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2023-04-02 05:19:58,668 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1588346401] [2023-04-02 05:19:58,668 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-02 05:19:58,669 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2023-04-02 05:19:58,669 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-02 05:19:58,669 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2023-04-02 05:19:58,670 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=203, Unknown=0, NotChecked=0, Total=240 [2023-04-02 05:19:58,670 INFO L87 Difference]: Start difference. First operand 4719 states and 6708 transitions. Second operand has 16 states, 16 states have (on average 5.1875) internal successors, (83), 9 states have internal predecessors, (83), 5 states have call successors, (12), 10 states have call predecessors, (12), 4 states have return successors, (10), 4 states have call predecessors, (10), 5 states have call successors, (10) [2023-04-02 05:20:01,822 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-02 05:20:01,822 INFO L93 Difference]: Finished difference Result 11068 states and 15649 transitions. [2023-04-02 05:20:01,823 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2023-04-02 05:20:01,823 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 5.1875) internal successors, (83), 9 states have internal predecessors, (83), 5 states have call successors, (12), 10 states have call predecessors, (12), 4 states have return successors, (10), 4 states have call predecessors, (10), 5 states have call successors, (10) Word has length 105 [2023-04-02 05:20:01,823 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-02 05:20:01,841 INFO L225 Difference]: With dead ends: 11068 [2023-04-02 05:20:01,841 INFO L226 Difference]: Without dead ends: 6457 [2023-04-02 05:20:01,850 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 60 GetRequests, 25 SyntacticMatches, 0 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 173 ImplicationChecksByTransitivity, 1.9s TimeCoverageRelationStatistics Valid=344, Invalid=988, Unknown=0, NotChecked=0, Total=1332 [2023-04-02 05:20:01,851 INFO L413 NwaCegarLoop]: 19 mSDtfsCounter, 1612 mSDsluCounter, 53 mSDsCounter, 0 mSdLazyCounter, 848 mSolverCounterSat, 203 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1612 SdHoareTripleChecker+Valid, 72 SdHoareTripleChecker+Invalid, 1051 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 203 IncrementalHoareTripleChecker+Valid, 848 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2023-04-02 05:20:01,870 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1612 Valid, 72 Invalid, 1051 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [203 Valid, 848 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2023-04-02 05:20:01,874 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6457 states. [2023-04-02 05:20:02,689 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6457 to 4809. [2023-04-02 05:20:02,704 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4809 states, 3652 states have (on average 1.4340087623220152) internal successors, (5237), 3762 states have internal predecessors, (5237), 524 states have call successors, (524), 524 states have call predecessors, (524), 632 states have return successors, (1063), 522 states have call predecessors, (1063), 523 states have call successors, (1063) [2023-04-02 05:20:02,714 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4809 states to 4809 states and 6824 transitions. [2023-04-02 05:20:02,714 INFO L78 Accepts]: Start accepts. Automaton has 4809 states and 6824 transitions. Word has length 105 [2023-04-02 05:20:02,715 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-02 05:20:02,715 INFO L495 AbstractCegarLoop]: Abstraction has 4809 states and 6824 transitions. [2023-04-02 05:20:02,715 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 5.1875) internal successors, (83), 9 states have internal predecessors, (83), 5 states have call successors, (12), 10 states have call predecessors, (12), 4 states have return successors, (10), 4 states have call predecessors, (10), 5 states have call successors, (10) [2023-04-02 05:20:02,715 INFO L276 IsEmpty]: Start isEmpty. Operand 4809 states and 6824 transitions. [2023-04-02 05:20:02,717 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 106 [2023-04-02 05:20:02,717 INFO L187 NwaCegarLoop]: Found error trace [2023-04-02 05:20:02,717 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-02 05:20:02,717 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-04-02 05:20:02,717 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-02 05:20:02,717 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-02 05:20:02,717 INFO L85 PathProgramCache]: Analyzing trace with hash 1851276536, now seen corresponding path program 1 times [2023-04-02 05:20:02,718 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-02 05:20:02,718 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [610817363] [2023-04-02 05:20:02,718 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 05:20:02,718 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-02 05:20:02,735 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:20:02,895 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-02 05:20:02,898 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:20:02,905 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2023-04-02 05:20:02,907 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:20:02,920 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2023-04-02 05:20:02,920 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:20:02,931 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2023-04-02 05:20:02,932 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:20:02,943 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2023-04-02 05:20:02,944 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:20:02,956 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2023-04-02 05:20:02,958 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:20:02,971 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2023-04-02 05:20:02,972 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:20:02,987 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2023-04-02 05:20:02,988 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:20:03,035 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2023-04-02 05:20:03,036 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:20:03,037 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2023-04-02 05:20:03,038 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:20:03,039 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 05:20:03,039 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-02 05:20:03,039 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [610817363] [2023-04-02 05:20:03,039 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [610817363] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-02 05:20:03,039 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-02 05:20:03,039 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2023-04-02 05:20:03,039 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [725171478] [2023-04-02 05:20:03,039 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-02 05:20:03,040 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2023-04-02 05:20:03,040 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-02 05:20:03,040 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2023-04-02 05:20:03,040 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=203, Unknown=0, NotChecked=0, Total=240 [2023-04-02 05:20:03,040 INFO L87 Difference]: Start difference. First operand 4809 states and 6824 transitions. Second operand has 16 states, 16 states have (on average 5.1875) internal successors, (83), 9 states have internal predecessors, (83), 5 states have call successors, (12), 10 states have call predecessors, (12), 4 states have return successors, (10), 4 states have call predecessors, (10), 5 states have call successors, (10) [2023-04-02 05:20:06,150 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-02 05:20:06,150 INFO L93 Difference]: Finished difference Result 10572 states and 14890 transitions. [2023-04-02 05:20:06,150 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2023-04-02 05:20:06,151 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 5.1875) internal successors, (83), 9 states have internal predecessors, (83), 5 states have call successors, (12), 10 states have call predecessors, (12), 4 states have return successors, (10), 4 states have call predecessors, (10), 5 states have call successors, (10) Word has length 105 [2023-04-02 05:20:06,151 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-02 05:20:06,165 INFO L225 Difference]: With dead ends: 10572 [2023-04-02 05:20:06,165 INFO L226 Difference]: Without dead ends: 5925 [2023-04-02 05:20:06,172 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 60 GetRequests, 25 SyntacticMatches, 0 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 174 ImplicationChecksByTransitivity, 1.9s TimeCoverageRelationStatistics Valid=344, Invalid=988, Unknown=0, NotChecked=0, Total=1332 [2023-04-02 05:20:06,172 INFO L413 NwaCegarLoop]: 19 mSDtfsCounter, 1750 mSDsluCounter, 53 mSDsCounter, 0 mSdLazyCounter, 836 mSolverCounterSat, 234 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1750 SdHoareTripleChecker+Valid, 72 SdHoareTripleChecker+Invalid, 1070 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 234 IncrementalHoareTripleChecker+Valid, 836 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2023-04-02 05:20:06,173 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1750 Valid, 72 Invalid, 1070 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [234 Valid, 836 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2023-04-02 05:20:06,177 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5925 states. [2023-04-02 05:20:06,959 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5925 to 4899. [2023-04-02 05:20:06,966 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4899 states, 3720 states have (on average 1.4325268817204302) internal successors, (5329), 3834 states have internal predecessors, (5329), 533 states have call successors, (533), 533 states have call predecessors, (533), 645 states have return successors, (1078), 531 states have call predecessors, (1078), 532 states have call successors, (1078) [2023-04-02 05:20:06,976 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4899 states to 4899 states and 6940 transitions. [2023-04-02 05:20:06,977 INFO L78 Accepts]: Start accepts. Automaton has 4899 states and 6940 transitions. Word has length 105 [2023-04-02 05:20:06,977 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-02 05:20:06,977 INFO L495 AbstractCegarLoop]: Abstraction has 4899 states and 6940 transitions. [2023-04-02 05:20:06,977 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 5.1875) internal successors, (83), 9 states have internal predecessors, (83), 5 states have call successors, (12), 10 states have call predecessors, (12), 4 states have return successors, (10), 4 states have call predecessors, (10), 5 states have call successors, (10) [2023-04-02 05:20:06,977 INFO L276 IsEmpty]: Start isEmpty. Operand 4899 states and 6940 transitions. [2023-04-02 05:20:06,979 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 106 [2023-04-02 05:20:06,979 INFO L187 NwaCegarLoop]: Found error trace [2023-04-02 05:20:06,979 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-02 05:20:06,979 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2023-04-02 05:20:06,979 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-02 05:20:06,979 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-02 05:20:06,979 INFO L85 PathProgramCache]: Analyzing trace with hash 883722216, now seen corresponding path program 1 times [2023-04-02 05:20:06,979 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-02 05:20:06,979 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1230279218] [2023-04-02 05:20:06,980 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 05:20:06,980 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-02 05:20:06,996 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:20:07,189 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-02 05:20:07,193 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:20:07,207 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2023-04-02 05:20:07,209 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:20:07,221 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2023-04-02 05:20:07,222 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:20:07,232 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2023-04-02 05:20:07,234 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:20:07,264 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2023-04-02 05:20:07,265 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:20:07,277 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2023-04-02 05:20:07,278 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:20:07,291 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2023-04-02 05:20:07,293 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:20:07,305 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2023-04-02 05:20:07,307 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:20:07,321 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2023-04-02 05:20:07,323 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:20:07,356 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2023-04-02 05:20:07,358 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:20:07,359 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 05:20:07,359 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-02 05:20:07,359 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1230279218] [2023-04-02 05:20:07,359 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1230279218] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-02 05:20:07,359 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-02 05:20:07,360 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2023-04-02 05:20:07,360 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1207813694] [2023-04-02 05:20:07,360 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-02 05:20:07,360 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2023-04-02 05:20:07,360 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-02 05:20:07,360 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2023-04-02 05:20:07,361 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=203, Unknown=0, NotChecked=0, Total=240 [2023-04-02 05:20:07,361 INFO L87 Difference]: Start difference. First operand 4899 states and 6940 transitions. Second operand has 16 states, 16 states have (on average 5.1875) internal successors, (83), 9 states have internal predecessors, (83), 5 states have call successors, (12), 10 states have call predecessors, (12), 4 states have return successors, (10), 4 states have call predecessors, (10), 5 states have call successors, (10) [2023-04-02 05:20:10,427 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-02 05:20:10,428 INFO L93 Difference]: Finished difference Result 10076 states and 14131 transitions. [2023-04-02 05:20:10,428 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2023-04-02 05:20:10,428 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 5.1875) internal successors, (83), 9 states have internal predecessors, (83), 5 states have call successors, (12), 10 states have call predecessors, (12), 4 states have return successors, (10), 4 states have call predecessors, (10), 5 states have call successors, (10) Word has length 105 [2023-04-02 05:20:10,428 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-02 05:20:10,444 INFO L225 Difference]: With dead ends: 10076 [2023-04-02 05:20:10,444 INFO L226 Difference]: Without dead ends: 5393 [2023-04-02 05:20:10,453 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 60 GetRequests, 25 SyntacticMatches, 0 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 175 ImplicationChecksByTransitivity, 2.0s TimeCoverageRelationStatistics Valid=344, Invalid=988, Unknown=0, NotChecked=0, Total=1332 [2023-04-02 05:20:10,453 INFO L413 NwaCegarLoop]: 19 mSDtfsCounter, 1584 mSDsluCounter, 49 mSDsCounter, 0 mSdLazyCounter, 853 mSolverCounterSat, 184 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1584 SdHoareTripleChecker+Valid, 68 SdHoareTripleChecker+Invalid, 1037 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 184 IncrementalHoareTripleChecker+Valid, 853 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2023-04-02 05:20:10,453 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1584 Valid, 68 Invalid, 1037 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [184 Valid, 853 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2023-04-02 05:20:10,457 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5393 states. [2023-04-02 05:20:11,324 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5393 to 4953. [2023-04-02 05:20:11,329 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4953 states, 3762 states have (on average 1.4308878256246678) internal successors, (5383), 3876 states have internal predecessors, (5383), 539 states have call successors, (539), 539 states have call predecessors, (539), 651 states have return successors, (1084), 537 states have call predecessors, (1084), 538 states have call successors, (1084) [2023-04-02 05:20:11,338 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4953 states to 4953 states and 7006 transitions. [2023-04-02 05:20:11,339 INFO L78 Accepts]: Start accepts. Automaton has 4953 states and 7006 transitions. Word has length 105 [2023-04-02 05:20:11,339 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-02 05:20:11,339 INFO L495 AbstractCegarLoop]: Abstraction has 4953 states and 7006 transitions. [2023-04-02 05:20:11,339 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 5.1875) internal successors, (83), 9 states have internal predecessors, (83), 5 states have call successors, (12), 10 states have call predecessors, (12), 4 states have return successors, (10), 4 states have call predecessors, (10), 5 states have call successors, (10) [2023-04-02 05:20:11,339 INFO L276 IsEmpty]: Start isEmpty. Operand 4953 states and 7006 transitions. [2023-04-02 05:20:11,340 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 106 [2023-04-02 05:20:11,340 INFO L187 NwaCegarLoop]: Found error trace [2023-04-02 05:20:11,340 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-02 05:20:11,341 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2023-04-02 05:20:11,341 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-02 05:20:11,341 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-02 05:20:11,341 INFO L85 PathProgramCache]: Analyzing trace with hash 1879796072, now seen corresponding path program 1 times [2023-04-02 05:20:11,341 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-02 05:20:11,341 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [194823844] [2023-04-02 05:20:11,341 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 05:20:11,341 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-02 05:20:11,354 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:20:11,532 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-02 05:20:11,536 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:20:11,544 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2023-04-02 05:20:11,547 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:20:11,560 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2023-04-02 05:20:11,561 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:20:11,574 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2023-04-02 05:20:11,576 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:20:11,588 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2023-04-02 05:20:11,591 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:20:11,635 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2023-04-02 05:20:11,637 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:20:11,658 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2023-04-02 05:20:11,659 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:20:11,677 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2023-04-02 05:20:11,679 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:20:11,698 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2023-04-02 05:20:11,699 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:20:11,700 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2023-04-02 05:20:11,701 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:20:11,702 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 05:20:11,702 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-02 05:20:11,702 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [194823844] [2023-04-02 05:20:11,702 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [194823844] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-02 05:20:11,703 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-02 05:20:11,703 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2023-04-02 05:20:11,703 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2075347657] [2023-04-02 05:20:11,703 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-02 05:20:11,703 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2023-04-02 05:20:11,703 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-02 05:20:11,704 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2023-04-02 05:20:11,704 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=203, Unknown=0, NotChecked=0, Total=240 [2023-04-02 05:20:11,704 INFO L87 Difference]: Start difference. First operand 4953 states and 7006 transitions. Second operand has 16 states, 16 states have (on average 5.1875) internal successors, (83), 9 states have internal predecessors, (83), 5 states have call successors, (12), 10 states have call predecessors, (12), 4 states have return successors, (10), 4 states have call predecessors, (10), 5 states have call successors, (10) [2023-04-02 05:20:15,136 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-02 05:20:15,136 INFO L93 Difference]: Finished difference Result 12687 states and 18001 transitions. [2023-04-02 05:20:15,136 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2023-04-02 05:20:15,136 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 5.1875) internal successors, (83), 9 states have internal predecessors, (83), 5 states have call successors, (12), 10 states have call predecessors, (12), 4 states have return successors, (10), 4 states have call predecessors, (10), 5 states have call successors, (10) Word has length 105 [2023-04-02 05:20:15,137 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-02 05:20:15,155 INFO L225 Difference]: With dead ends: 12687 [2023-04-02 05:20:15,155 INFO L226 Difference]: Without dead ends: 7827 [2023-04-02 05:20:15,163 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 60 GetRequests, 25 SyntacticMatches, 0 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 171 ImplicationChecksByTransitivity, 2.0s TimeCoverageRelationStatistics Valid=344, Invalid=988, Unknown=0, NotChecked=0, Total=1332 [2023-04-02 05:20:15,164 INFO L413 NwaCegarLoop]: 19 mSDtfsCounter, 1492 mSDsluCounter, 53 mSDsCounter, 0 mSdLazyCounter, 872 mSolverCounterSat, 189 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1492 SdHoareTripleChecker+Valid, 72 SdHoareTripleChecker+Invalid, 1061 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 189 IncrementalHoareTripleChecker+Valid, 872 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2023-04-02 05:20:15,164 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1492 Valid, 72 Invalid, 1061 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [189 Valid, 872 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2023-04-02 05:20:15,169 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7827 states. [2023-04-02 05:20:16,046 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7827 to 5747. [2023-04-02 05:20:16,051 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5747 states, 4354 states have (on average 1.4441892512632062) internal successors, (6288), 4524 states have internal predecessors, (6288), 612 states have call successors, (612), 612 states have call predecessors, (612), 780 states have return successors, (1276), 610 states have call predecessors, (1276), 611 states have call successors, (1276) [2023-04-02 05:20:16,060 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5747 states to 5747 states and 8176 transitions. [2023-04-02 05:20:16,062 INFO L78 Accepts]: Start accepts. Automaton has 5747 states and 8176 transitions. Word has length 105 [2023-04-02 05:20:16,062 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-02 05:20:16,062 INFO L495 AbstractCegarLoop]: Abstraction has 5747 states and 8176 transitions. [2023-04-02 05:20:16,062 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 5.1875) internal successors, (83), 9 states have internal predecessors, (83), 5 states have call successors, (12), 10 states have call predecessors, (12), 4 states have return successors, (10), 4 states have call predecessors, (10), 5 states have call successors, (10) [2023-04-02 05:20:16,062 INFO L276 IsEmpty]: Start isEmpty. Operand 5747 states and 8176 transitions. [2023-04-02 05:20:16,064 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 108 [2023-04-02 05:20:16,064 INFO L187 NwaCegarLoop]: Found error trace [2023-04-02 05:20:16,064 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-02 05:20:16,064 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2023-04-02 05:20:16,064 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-02 05:20:16,064 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-02 05:20:16,064 INFO L85 PathProgramCache]: Analyzing trace with hash 924112189, now seen corresponding path program 1 times [2023-04-02 05:20:16,064 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-02 05:20:16,064 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [523132921] [2023-04-02 05:20:16,065 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 05:20:16,065 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-02 05:20:16,078 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:20:16,248 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-02 05:20:16,251 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:20:16,257 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2023-04-02 05:20:16,259 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:20:16,271 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2023-04-02 05:20:16,272 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:20:16,283 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2023-04-02 05:20:16,284 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:20:16,324 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2023-04-02 05:20:16,325 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:20:16,341 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2023-04-02 05:20:16,342 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:20:16,359 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2023-04-02 05:20:16,360 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:20:16,378 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2023-04-02 05:20:16,380 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:20:16,399 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2023-04-02 05:20:16,400 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:20:16,401 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2023-04-02 05:20:16,402 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:20:16,403 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 05:20:16,403 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-02 05:20:16,403 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [523132921] [2023-04-02 05:20:16,403 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [523132921] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-02 05:20:16,403 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-02 05:20:16,403 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2023-04-02 05:20:16,403 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [759083333] [2023-04-02 05:20:16,403 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-02 05:20:16,404 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2023-04-02 05:20:16,404 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-02 05:20:16,404 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2023-04-02 05:20:16,404 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=203, Unknown=0, NotChecked=0, Total=240 [2023-04-02 05:20:16,405 INFO L87 Difference]: Start difference. First operand 5747 states and 8176 transitions. Second operand has 16 states, 16 states have (on average 5.3125) internal successors, (85), 9 states have internal predecessors, (85), 5 states have call successors, (12), 10 states have call predecessors, (12), 4 states have return successors, (10), 3 states have call predecessors, (10), 5 states have call successors, (10) [2023-04-02 05:20:19,762 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-02 05:20:19,762 INFO L93 Difference]: Finished difference Result 11299 states and 16186 transitions. [2023-04-02 05:20:19,763 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2023-04-02 05:20:19,763 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 5.3125) internal successors, (85), 9 states have internal predecessors, (85), 5 states have call successors, (12), 10 states have call predecessors, (12), 4 states have return successors, (10), 3 states have call predecessors, (10), 5 states have call successors, (10) Word has length 107 [2023-04-02 05:20:19,763 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-02 05:20:19,778 INFO L225 Difference]: With dead ends: 11299 [2023-04-02 05:20:19,779 INFO L226 Difference]: Without dead ends: 7307 [2023-04-02 05:20:19,784 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 60 GetRequests, 25 SyntacticMatches, 0 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 170 ImplicationChecksByTransitivity, 2.0s TimeCoverageRelationStatistics Valid=344, Invalid=988, Unknown=0, NotChecked=0, Total=1332 [2023-04-02 05:20:19,785 INFO L413 NwaCegarLoop]: 19 mSDtfsCounter, 1481 mSDsluCounter, 53 mSDsCounter, 0 mSdLazyCounter, 874 mSolverCounterSat, 193 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1481 SdHoareTripleChecker+Valid, 72 SdHoareTripleChecker+Invalid, 1067 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 193 IncrementalHoareTripleChecker+Valid, 874 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2023-04-02 05:20:19,785 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1481 Valid, 72 Invalid, 1067 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [193 Valid, 874 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2023-04-02 05:20:19,789 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7307 states. [2023-04-02 05:20:20,691 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7307 to 5660. [2023-04-02 05:20:20,696 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5660 states, 4302 states have (on average 1.4481636448163644) internal successors, (6230), 4445 states have internal predecessors, (6230), 608 states have call successors, (608), 608 states have call predecessors, (608), 749 states have return successors, (1246), 606 states have call predecessors, (1246), 607 states have call successors, (1246) [2023-04-02 05:20:20,705 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5660 states to 5660 states and 8084 transitions. [2023-04-02 05:20:20,706 INFO L78 Accepts]: Start accepts. Automaton has 5660 states and 8084 transitions. Word has length 107 [2023-04-02 05:20:20,707 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-02 05:20:20,707 INFO L495 AbstractCegarLoop]: Abstraction has 5660 states and 8084 transitions. [2023-04-02 05:20:20,707 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 5.3125) internal successors, (85), 9 states have internal predecessors, (85), 5 states have call successors, (12), 10 states have call predecessors, (12), 4 states have return successors, (10), 3 states have call predecessors, (10), 5 states have call successors, (10) [2023-04-02 05:20:20,707 INFO L276 IsEmpty]: Start isEmpty. Operand 5660 states and 8084 transitions. [2023-04-02 05:20:20,707 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 109 [2023-04-02 05:20:20,708 INFO L187 NwaCegarLoop]: Found error trace [2023-04-02 05:20:20,708 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-02 05:20:20,708 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2023-04-02 05:20:20,708 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-02 05:20:20,708 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-02 05:20:20,708 INFO L85 PathProgramCache]: Analyzing trace with hash 1690240636, now seen corresponding path program 1 times [2023-04-02 05:20:20,708 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-02 05:20:20,708 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [249536837] [2023-04-02 05:20:20,708 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 05:20:20,708 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-02 05:20:20,729 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:20:20,910 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-02 05:20:20,912 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:20:20,915 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2023-04-02 05:20:20,916 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:20:20,926 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2023-04-02 05:20:20,927 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:20:20,938 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2023-04-02 05:20:20,941 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:20:20,979 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2023-04-02 05:20:20,981 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:20:20,993 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2023-04-02 05:20:20,994 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:20:21,006 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2023-04-02 05:20:21,008 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:20:21,022 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2023-04-02 05:20:21,024 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:20:21,039 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2023-04-02 05:20:21,041 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:20:21,042 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2023-04-02 05:20:21,043 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:20:21,044 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 05:20:21,044 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-02 05:20:21,044 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [249536837] [2023-04-02 05:20:21,044 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [249536837] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-02 05:20:21,044 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-02 05:20:21,045 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2023-04-02 05:20:21,045 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1327169384] [2023-04-02 05:20:21,045 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-02 05:20:21,045 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-04-02 05:20:21,045 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-02 05:20:21,045 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-04-02 05:20:21,045 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2023-04-02 05:20:21,046 INFO L87 Difference]: Start difference. First operand 5660 states and 8084 transitions. Second operand has 12 states, 12 states have (on average 7.166666666666667) internal successors, (86), 5 states have internal predecessors, (86), 3 states have call successors, (12), 9 states have call predecessors, (12), 3 states have return successors, (10), 3 states have call predecessors, (10), 3 states have call successors, (10) [2023-04-02 05:20:23,592 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-02 05:20:23,593 INFO L93 Difference]: Finished difference Result 11135 states and 15947 transitions. [2023-04-02 05:20:23,593 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2023-04-02 05:20:23,593 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 7.166666666666667) internal successors, (86), 5 states have internal predecessors, (86), 3 states have call successors, (12), 9 states have call predecessors, (12), 3 states have return successors, (10), 3 states have call predecessors, (10), 3 states have call successors, (10) Word has length 108 [2023-04-02 05:20:23,594 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-02 05:20:23,611 INFO L225 Difference]: With dead ends: 11135 [2023-04-02 05:20:23,611 INFO L226 Difference]: Without dead ends: 6899 [2023-04-02 05:20:23,619 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 51 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 105 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=192, Invalid=510, Unknown=0, NotChecked=0, Total=702 [2023-04-02 05:20:23,619 INFO L413 NwaCegarLoop]: 39 mSDtfsCounter, 884 mSDsluCounter, 66 mSDsCounter, 0 mSdLazyCounter, 837 mSolverCounterSat, 75 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 891 SdHoareTripleChecker+Valid, 105 SdHoareTripleChecker+Invalid, 912 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 75 IncrementalHoareTripleChecker+Valid, 837 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2023-04-02 05:20:23,619 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [891 Valid, 105 Invalid, 912 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [75 Valid, 837 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2023-04-02 05:20:23,624 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6899 states. [2023-04-02 05:20:24,763 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6899 to 6496. [2023-04-02 05:20:24,768 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6496 states, 4927 states have (on average 1.4245991475542927) internal successors, (7019), 5045 states have internal predecessors, (7019), 726 states have call successors, (726), 726 states have call predecessors, (726), 842 states have return successors, (1419), 724 states have call predecessors, (1419), 725 states have call successors, (1419) [2023-04-02 05:20:24,778 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6496 states to 6496 states and 9164 transitions. [2023-04-02 05:20:24,779 INFO L78 Accepts]: Start accepts. Automaton has 6496 states and 9164 transitions. Word has length 108 [2023-04-02 05:20:24,779 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-02 05:20:24,779 INFO L495 AbstractCegarLoop]: Abstraction has 6496 states and 9164 transitions. [2023-04-02 05:20:24,779 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 7.166666666666667) internal successors, (86), 5 states have internal predecessors, (86), 3 states have call successors, (12), 9 states have call predecessors, (12), 3 states have return successors, (10), 3 states have call predecessors, (10), 3 states have call successors, (10) [2023-04-02 05:20:24,779 INFO L276 IsEmpty]: Start isEmpty. Operand 6496 states and 9164 transitions. [2023-04-02 05:20:24,781 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 153 [2023-04-02 05:20:24,782 INFO L187 NwaCegarLoop]: Found error trace [2023-04-02 05:20:24,782 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, 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 05:20:24,782 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2023-04-02 05:20:24,782 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-02 05:20:24,782 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-02 05:20:24,782 INFO L85 PathProgramCache]: Analyzing trace with hash -1446924670, now seen corresponding path program 1 times [2023-04-02 05:20:24,782 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-02 05:20:24,782 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [866580457] [2023-04-02 05:20:24,782 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 05:20:24,783 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-02 05:20:24,797 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:20:25,132 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-02 05:20:25,134 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:20:25,137 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2023-04-02 05:20:25,140 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:20:25,149 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2023-04-02 05:20:25,150 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:20:25,160 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2023-04-02 05:20:25,161 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:20:25,171 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2023-04-02 05:20:25,172 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:20:25,183 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2023-04-02 05:20:25,185 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:20:25,206 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2023-04-02 05:20:25,207 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:20:25,220 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2023-04-02 05:20:25,222 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:20:25,236 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2023-04-02 05:20:25,237 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:20:25,239 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2023-04-02 05:20:25,240 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:20:25,256 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2023-04-02 05:20:25,257 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:20:25,259 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 106 [2023-04-02 05:20:25,260 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:20:25,274 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 111 [2023-04-02 05:20:25,275 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:20:25,289 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 116 [2023-04-02 05:20:25,290 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:20:25,300 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 125 [2023-04-02 05:20:25,301 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:20:25,315 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 130 [2023-04-02 05:20:25,317 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:20:25,331 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 135 [2023-04-02 05:20:25,332 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:20:25,347 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 141 [2023-04-02 05:20:25,348 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:20:25,361 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 24 proven. 10 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2023-04-02 05:20:25,361 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-02 05:20:25,361 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [866580457] [2023-04-02 05:20:25,361 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [866580457] provided 0 perfect and 1 imperfect interpolant sequences [2023-04-02 05:20:25,361 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1389016833] [2023-04-02 05:20:25,361 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 05:20:25,361 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-02 05:20:25,361 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-04-02 05:20:25,374 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 05:20:25,378 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 05:20:25,552 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:20:25,559 INFO L262 TraceCheckSpWp]: Trace formula consists of 1087 conjuncts, 27 conjunts are in the unsatisfiable core [2023-04-02 05:20:25,572 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-04-02 05:20:26,863 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 28 proven. 0 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2023-04-02 05:20:26,863 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-04-02 05:20:26,863 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1389016833] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-02 05:20:26,863 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-04-02 05:20:26,863 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [21] total 35 [2023-04-02 05:20:26,863 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2032180308] [2023-04-02 05:20:26,863 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-02 05:20:26,864 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2023-04-02 05:20:26,864 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-02 05:20:26,864 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2023-04-02 05:20:26,864 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=128, Invalid=1062, Unknown=0, NotChecked=0, Total=1190 [2023-04-02 05:20:26,865 INFO L87 Difference]: Start difference. First operand 6496 states and 9164 transitions. Second operand has 16 states, 16 states have (on average 6.625) internal successors, (106), 16 states have internal predecessors, (106), 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 05:20:29,669 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-02 05:20:29,669 INFO L93 Difference]: Finished difference Result 12897 states and 18262 transitions. [2023-04-02 05:20:29,677 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-04-02 05:20:29,677 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 6.625) internal successors, (106), 16 states have internal predecessors, (106), 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 152 [2023-04-02 05:20:29,677 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-02 05:20:29,695 INFO L225 Difference]: With dead ends: 12897 [2023-04-02 05:20:29,695 INFO L226 Difference]: Without dead ends: 9624 [2023-04-02 05:20:29,701 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 205 GetRequests, 170 SyntacticMatches, 0 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 309 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=159, Invalid=1173, Unknown=0, NotChecked=0, Total=1332 [2023-04-02 05:20:29,702 INFO L413 NwaCegarLoop]: 61 mSDtfsCounter, 1445 mSDsluCounter, 720 mSDsCounter, 0 mSdLazyCounter, 2313 mSolverCounterSat, 99 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1451 SdHoareTripleChecker+Valid, 781 SdHoareTripleChecker+Invalid, 2412 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 99 IncrementalHoareTripleChecker+Valid, 2313 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2023-04-02 05:20:29,702 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1451 Valid, 781 Invalid, 2412 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [99 Valid, 2313 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2023-04-02 05:20:29,707 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9624 states. [2023-04-02 05:20:31,469 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9624 to 9612. [2023-04-02 05:20:31,477 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9612 states, 7295 states have (on average 1.428101439342015) internal successors, (10418), 7453 states have internal predecessors, (10418), 1080 states have call successors, (1080), 1080 states have call predecessors, (1080), 1236 states have return successors, (2118), 1078 states have call predecessors, (2118), 1079 states have call successors, (2118) [2023-04-02 05:20:31,491 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9612 states to 9612 states and 13616 transitions. [2023-04-02 05:20:31,491 INFO L78 Accepts]: Start accepts. Automaton has 9612 states and 13616 transitions. Word has length 152 [2023-04-02 05:20:31,492 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-02 05:20:31,492 INFO L495 AbstractCegarLoop]: Abstraction has 9612 states and 13616 transitions. [2023-04-02 05:20:31,492 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 6.625) internal successors, (106), 16 states have internal predecessors, (106), 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 05:20:31,492 INFO L276 IsEmpty]: Start isEmpty. Operand 9612 states and 13616 transitions. [2023-04-02 05:20:31,494 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 153 [2023-04-02 05:20:31,494 INFO L187 NwaCegarLoop]: Found error trace [2023-04-02 05:20:31,494 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, 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 05:20:31,503 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 05:20:31,700 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,SelfDestructingSolverStorable14 [2023-04-02 05:20:31,701 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-02 05:20:31,701 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-02 05:20:31,701 INFO L85 PathProgramCache]: Analyzing trace with hash -1441954446, now seen corresponding path program 1 times [2023-04-02 05:20:31,701 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-02 05:20:31,701 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1341257986] [2023-04-02 05:20:31,701 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 05:20:31,701 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-02 05:20:31,723 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:20:32,065 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-02 05:20:32,068 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:20:32,071 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2023-04-02 05:20:32,073 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:20:32,079 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2023-04-02 05:20:32,080 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:20:32,091 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2023-04-02 05:20:32,092 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:20:32,104 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2023-04-02 05:20:32,105 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:20:32,117 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2023-04-02 05:20:32,118 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:20:32,131 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2023-04-02 05:20:32,133 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:20:32,156 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2023-04-02 05:20:32,158 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:20:32,173 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2023-04-02 05:20:32,174 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:20:32,176 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2023-04-02 05:20:32,177 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:20:32,189 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2023-04-02 05:20:32,191 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:20:32,192 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 106 [2023-04-02 05:20:32,194 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:20:32,210 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 111 [2023-04-02 05:20:32,212 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:20:32,226 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 116 [2023-04-02 05:20:32,228 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:20:32,243 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 121 [2023-04-02 05:20:32,244 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:20:32,256 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 130 [2023-04-02 05:20:32,257 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:20:32,272 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 135 [2023-04-02 05:20:32,274 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:20:32,289 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 141 [2023-04-02 05:20:32,290 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:20:32,304 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 23 proven. 11 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2023-04-02 05:20:32,304 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-02 05:20:32,305 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1341257986] [2023-04-02 05:20:32,305 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1341257986] provided 0 perfect and 1 imperfect interpolant sequences [2023-04-02 05:20:32,305 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1130885374] [2023-04-02 05:20:32,305 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 05:20:32,305 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-02 05:20:32,305 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-04-02 05:20:32,306 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 05:20:32,309 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 05:20:32,482 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:20:32,488 INFO L262 TraceCheckSpWp]: Trace formula consists of 1087 conjuncts, 27 conjunts are in the unsatisfiable core [2023-04-02 05:20:32,499 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-04-02 05:20:33,547 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 23 proven. 0 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2023-04-02 05:20:33,547 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-04-02 05:20:33,548 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1130885374] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-02 05:20:33,548 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-04-02 05:20:33,548 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [21] total 34 [2023-04-02 05:20:33,548 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [201424845] [2023-04-02 05:20:33,548 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-02 05:20:33,548 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2023-04-02 05:20:33,548 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-02 05:20:33,549 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2023-04-02 05:20:33,549 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=123, Invalid=999, Unknown=0, NotChecked=0, Total=1122 [2023-04-02 05:20:33,549 INFO L87 Difference]: Start difference. First operand 9612 states and 13616 transitions. Second operand has 15 states, 15 states have (on average 6.866666666666666) internal successors, (103), 15 states have internal predecessors, (103), 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 05:20:36,688 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-02 05:20:36,688 INFO L93 Difference]: Finished difference Result 15962 states and 22632 transitions. [2023-04-02 05:20:36,689 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-04-02 05:20:36,689 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 6.866666666666666) internal successors, (103), 15 states have internal predecessors, (103), 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 152 [2023-04-02 05:20:36,689 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-02 05:20:36,719 INFO L225 Difference]: With dead ends: 15962 [2023-04-02 05:20:36,719 INFO L226 Difference]: Without dead ends: 11558 [2023-04-02 05:20:36,731 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 205 GetRequests, 171 SyntacticMatches, 0 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 285 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=153, Invalid=1107, Unknown=0, NotChecked=0, Total=1260 [2023-04-02 05:20:36,731 INFO L413 NwaCegarLoop]: 58 mSDtfsCounter, 1417 mSDsluCounter, 639 mSDsCounter, 0 mSdLazyCounter, 1958 mSolverCounterSat, 99 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1423 SdHoareTripleChecker+Valid, 697 SdHoareTripleChecker+Invalid, 2057 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 99 IncrementalHoareTripleChecker+Valid, 1958 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2023-04-02 05:20:36,732 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1423 Valid, 697 Invalid, 2057 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [99 Valid, 1958 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2023-04-02 05:20:36,740 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11558 states. [2023-04-02 05:20:38,929 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11558 to 11546. [2023-04-02 05:20:38,937 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11546 states, 8766 states have (on average 1.4289299566506959) internal successors, (12526), 8945 states have internal predecessors, (12526), 1301 states have call successors, (1301), 1301 states have call predecessors, (1301), 1478 states have return successors, (2553), 1299 states have call predecessors, (2553), 1300 states have call successors, (2553) [2023-04-02 05:20:38,956 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11546 states to 11546 states and 16380 transitions. [2023-04-02 05:20:38,957 INFO L78 Accepts]: Start accepts. Automaton has 11546 states and 16380 transitions. Word has length 152 [2023-04-02 05:20:38,958 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-02 05:20:38,958 INFO L495 AbstractCegarLoop]: Abstraction has 11546 states and 16380 transitions. [2023-04-02 05:20:38,958 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 6.866666666666666) internal successors, (103), 15 states have internal predecessors, (103), 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 05:20:38,958 INFO L276 IsEmpty]: Start isEmpty. Operand 11546 states and 16380 transitions. [2023-04-02 05:20:38,964 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 153 [2023-04-02 05:20:38,964 INFO L187 NwaCegarLoop]: Found error trace [2023-04-02 05:20:38,964 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, 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 05:20:38,972 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-04-02 05:20:39,166 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,SelfDestructingSolverStorable15 [2023-04-02 05:20:39,167 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-02 05:20:39,167 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-02 05:20:39,167 INFO L85 PathProgramCache]: Analyzing trace with hash -2114191870, now seen corresponding path program 1 times [2023-04-02 05:20:39,167 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-02 05:20:39,167 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1549546202] [2023-04-02 05:20:39,167 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 05:20:39,167 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-02 05:20:39,182 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:20:39,494 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-02 05:20:39,496 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:20:39,499 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2023-04-02 05:20:39,503 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:20:39,512 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2023-04-02 05:20:39,513 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:20:39,523 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2023-04-02 05:20:39,524 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:20:39,534 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2023-04-02 05:20:39,536 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:20:39,546 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2023-04-02 05:20:39,548 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:20:39,559 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2023-04-02 05:20:39,560 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:20:39,572 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2023-04-02 05:20:39,574 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:20:39,613 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2023-04-02 05:20:39,615 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:20:39,616 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2023-04-02 05:20:39,617 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:20:39,627 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2023-04-02 05:20:39,628 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:20:39,630 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 106 [2023-04-02 05:20:39,631 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:20:39,647 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 111 [2023-04-02 05:20:39,648 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:20:39,664 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 116 [2023-04-02 05:20:39,665 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:20:39,679 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 121 [2023-04-02 05:20:39,680 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:20:39,694 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 126 [2023-04-02 05:20:39,695 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:20:39,706 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 135 [2023-04-02 05:20:39,707 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:20:39,722 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 141 [2023-04-02 05:20:39,723 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:20:39,735 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 22 proven. 12 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2023-04-02 05:20:39,736 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-02 05:20:39,736 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1549546202] [2023-04-02 05:20:39,736 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1549546202] provided 0 perfect and 1 imperfect interpolant sequences [2023-04-02 05:20:39,736 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [770380799] [2023-04-02 05:20:39,736 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 05:20:39,736 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-02 05:20:39,736 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-04-02 05:20:39,737 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 05:20:39,738 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 05:20:39,887 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:20:39,891 INFO L262 TraceCheckSpWp]: Trace formula consists of 1087 conjuncts, 27 conjunts are in the unsatisfiable core [2023-04-02 05:20:39,898 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-04-02 05:20:40,903 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 18 proven. 0 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2023-04-02 05:20:40,903 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-04-02 05:20:40,903 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [770380799] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-02 05:20:40,903 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-04-02 05:20:40,903 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [21] total 33 [2023-04-02 05:20:40,904 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2048631067] [2023-04-02 05:20:40,904 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-02 05:20:40,904 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2023-04-02 05:20:40,904 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-02 05:20:40,904 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2023-04-02 05:20:40,905 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=117, Invalid=939, Unknown=0, NotChecked=0, Total=1056 [2023-04-02 05:20:40,905 INFO L87 Difference]: Start difference. First operand 11546 states and 16380 transitions. Second operand has 14 states, 14 states have (on average 7.142857142857143) internal successors, (100), 14 states have internal predecessors, (100), 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 05:20:43,948 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-02 05:20:43,948 INFO L93 Difference]: Finished difference Result 19007 states and 26973 transitions. [2023-04-02 05:20:43,949 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-04-02 05:20:43,949 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 7.142857142857143) internal successors, (100), 14 states have internal predecessors, (100), 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 152 [2023-04-02 05:20:43,949 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-02 05:20:43,970 INFO L225 Difference]: With dead ends: 19007 [2023-04-02 05:20:43,970 INFO L226 Difference]: Without dead ends: 12356 [2023-04-02 05:20:43,978 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 204 GetRequests, 172 SyntacticMatches, 0 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 261 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=132, Invalid=990, Unknown=0, NotChecked=0, Total=1122 [2023-04-02 05:20:43,978 INFO L413 NwaCegarLoop]: 40 mSDtfsCounter, 1335 mSDsluCounter, 473 mSDsCounter, 0 mSdLazyCounter, 1432 mSolverCounterSat, 114 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1342 SdHoareTripleChecker+Valid, 513 SdHoareTripleChecker+Invalid, 1546 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 114 IncrementalHoareTripleChecker+Valid, 1432 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2023-04-02 05:20:43,979 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1342 Valid, 513 Invalid, 1546 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [114 Valid, 1432 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2023-04-02 05:20:43,984 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12356 states. [2023-04-02 05:20:46,214 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12356 to 12346. [2023-04-02 05:20:46,223 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12346 states, 9376 states have (on average 1.4286476109215016) internal successors, (13395), 9561 states have internal predecessors, (13395), 1393 states have call successors, (1393), 1393 states have call predecessors, (1393), 1576 states have return successors, (2732), 1391 states have call predecessors, (2732), 1392 states have call successors, (2732) [2023-04-02 05:20:46,241 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12346 states to 12346 states and 17520 transitions. [2023-04-02 05:20:46,243 INFO L78 Accepts]: Start accepts. Automaton has 12346 states and 17520 transitions. Word has length 152 [2023-04-02 05:20:46,243 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-02 05:20:46,243 INFO L495 AbstractCegarLoop]: Abstraction has 12346 states and 17520 transitions. [2023-04-02 05:20:46,243 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 7.142857142857143) internal successors, (100), 14 states have internal predecessors, (100), 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 05:20:46,243 INFO L276 IsEmpty]: Start isEmpty. Operand 12346 states and 17520 transitions. [2023-04-02 05:20:46,245 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 153 [2023-04-02 05:20:46,245 INFO L187 NwaCegarLoop]: Found error trace [2023-04-02 05:20:46,245 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, 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 05:20:46,257 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2023-04-02 05:20:46,455 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-02 05:20:46,455 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-02 05:20:46,455 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-02 05:20:46,455 INFO L85 PathProgramCache]: Analyzing trace with hash 1213221106, now seen corresponding path program 1 times [2023-04-02 05:20:46,455 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-02 05:20:46,455 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [692615050] [2023-04-02 05:20:46,455 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 05:20:46,456 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-02 05:20:46,473 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:20:46,868 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-02 05:20:46,871 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:20:46,874 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2023-04-02 05:20:46,875 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:20:46,907 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2023-04-02 05:20:46,908 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:20:46,922 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2023-04-02 05:20:46,923 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:20:46,949 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2023-04-02 05:20:46,951 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:20:46,976 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2023-04-02 05:20:46,978 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:20:47,010 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2023-04-02 05:20:47,012 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:20:47,045 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2023-04-02 05:20:47,047 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:20:47,076 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2023-04-02 05:20:47,077 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:20:47,078 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2023-04-02 05:20:47,079 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:20:47,080 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2023-04-02 05:20:47,081 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:20:47,082 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 106 [2023-04-02 05:20:47,082 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:20:47,087 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 111 [2023-04-02 05:20:47,088 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:20:47,093 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 116 [2023-04-02 05:20:47,095 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:20:47,100 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 121 [2023-04-02 05:20:47,101 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:20:47,106 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 126 [2023-04-02 05:20:47,108 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:20:47,113 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 131 [2023-04-02 05:20:47,114 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:20:47,126 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 141 [2023-04-02 05:20:47,127 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:20:47,141 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 11 proven. 0 refuted. 0 times theorem prover too weak. 31 trivial. 0 not checked. [2023-04-02 05:20:47,142 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-02 05:20:47,142 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [692615050] [2023-04-02 05:20:47,142 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [692615050] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-02 05:20:47,142 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-02 05:20:47,142 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [22] imperfect sequences [] total 22 [2023-04-02 05:20:47,142 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1041739188] [2023-04-02 05:20:47,142 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-02 05:20:47,143 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2023-04-02 05:20:47,143 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-02 05:20:47,143 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2023-04-02 05:20:47,143 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=59, Invalid=403, Unknown=0, NotChecked=0, Total=462 [2023-04-02 05:20:47,143 INFO L87 Difference]: Start difference. First operand 12346 states and 17520 transitions. Second operand has 22 states, 22 states have (on average 4.363636363636363) internal successors, (96), 15 states have internal predecessors, (96), 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 05:21:07,369 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-02 05:21:07,369 INFO L93 Difference]: Finished difference Result 28534 states and 40748 transitions. [2023-04-02 05:21:07,369 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 218 states. [2023-04-02 05:21:07,370 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 22 states have (on average 4.363636363636363) internal successors, (96), 15 states have internal predecessors, (96), 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 152 [2023-04-02 05:21:07,370 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-02 05:21:07,412 INFO L225 Difference]: With dead ends: 28534 [2023-04-02 05:21:07,412 INFO L226 Difference]: Without dead ends: 19077 [2023-04-02 05:21:07,430 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 318 GetRequests, 87 SyntacticMatches, 0 SemanticMatches, 231 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 22179 ImplicationChecksByTransitivity, 11.7s TimeCoverageRelationStatistics Valid=6591, Invalid=47465, Unknown=0, NotChecked=0, Total=54056 [2023-04-02 05:21:07,430 INFO L413 NwaCegarLoop]: 98 mSDtfsCounter, 3888 mSDsluCounter, 395 mSDsCounter, 0 mSdLazyCounter, 7508 mSolverCounterSat, 401 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3911 SdHoareTripleChecker+Valid, 493 SdHoareTripleChecker+Invalid, 7909 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 401 IncrementalHoareTripleChecker+Valid, 7508 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.8s IncrementalHoareTripleChecker+Time [2023-04-02 05:21:07,431 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3911 Valid, 493 Invalid, 7909 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [401 Valid, 7508 Invalid, 0 Unknown, 0 Unchecked, 4.8s Time] [2023-04-02 05:21:07,442 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19077 states. [2023-04-02 05:21:11,070 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19077 to 18720. [2023-04-02 05:21:11,083 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 18720 states, 14217 states have (on average 1.4293451501723289) internal successors, (20321), 14477 states have internal predecessors, (20321), 2122 states have call successors, (2122), 2122 states have call predecessors, (2122), 2380 states have return successors, (4188), 2120 states have call predecessors, (4188), 2121 states have call successors, (4188) [2023-04-02 05:21:11,114 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18720 states to 18720 states and 26631 transitions. [2023-04-02 05:21:11,116 INFO L78 Accepts]: Start accepts. Automaton has 18720 states and 26631 transitions. Word has length 152 [2023-04-02 05:21:11,116 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-02 05:21:11,116 INFO L495 AbstractCegarLoop]: Abstraction has 18720 states and 26631 transitions. [2023-04-02 05:21:11,116 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 22 states have (on average 4.363636363636363) internal successors, (96), 15 states have internal predecessors, (96), 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 05:21:11,116 INFO L276 IsEmpty]: Start isEmpty. Operand 18720 states and 26631 transitions. [2023-04-02 05:21:11,118 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 153 [2023-04-02 05:21:11,118 INFO L187 NwaCegarLoop]: Found error trace [2023-04-02 05:21:11,119 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, 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 05:21:11,119 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2023-04-02 05:21:11,119 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-02 05:21:11,119 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-02 05:21:11,119 INFO L85 PathProgramCache]: Analyzing trace with hash -2085672334, now seen corresponding path program 1 times [2023-04-02 05:21:11,119 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-02 05:21:11,119 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1538063049] [2023-04-02 05:21:11,119 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 05:21:11,119 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-02 05:21:11,139 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:21:11,452 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-02 05:21:11,454 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:21:11,457 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2023-04-02 05:21:11,459 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:21:11,469 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2023-04-02 05:21:11,470 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:21:11,480 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2023-04-02 05:21:11,481 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:21:11,493 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2023-04-02 05:21:11,494 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:21:11,513 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2023-04-02 05:21:11,514 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:21:11,532 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2023-04-02 05:21:11,534 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:21:11,547 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2023-04-02 05:21:11,549 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:21:11,564 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2023-04-02 05:21:11,565 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:21:11,567 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2023-04-02 05:21:11,568 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:21:11,579 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2023-04-02 05:21:11,580 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:21:11,582 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 106 [2023-04-02 05:21:11,583 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:21:11,596 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 111 [2023-04-02 05:21:11,598 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:21:11,608 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 120 [2023-04-02 05:21:11,609 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:21:11,623 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 125 [2023-04-02 05:21:11,625 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:21:11,640 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 130 [2023-04-02 05:21:11,642 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:21:11,655 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 135 [2023-04-02 05:21:11,657 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:21:11,671 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 141 [2023-04-02 05:21:11,672 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:21:11,684 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 25 proven. 9 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2023-04-02 05:21:11,684 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-02 05:21:11,684 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1538063049] [2023-04-02 05:21:11,684 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1538063049] provided 0 perfect and 1 imperfect interpolant sequences [2023-04-02 05:21:11,684 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2023930760] [2023-04-02 05:21:11,685 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 05:21:11,685 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-02 05:21:11,685 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-04-02 05:21:11,686 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 05:21:11,688 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 05:21:11,830 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:21:11,833 INFO L262 TraceCheckSpWp]: Trace formula consists of 1087 conjuncts, 27 conjunts are in the unsatisfiable core [2023-04-02 05:21:11,837 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-04-02 05:21:12,916 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 33 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2023-04-02 05:21:12,916 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-04-02 05:21:12,916 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2023930760] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-02 05:21:12,916 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-04-02 05:21:12,916 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [17] imperfect sequences [21] total 36 [2023-04-02 05:21:12,917 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1141979982] [2023-04-02 05:21:12,917 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-02 05:21:12,918 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2023-04-02 05:21:12,918 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-02 05:21:12,918 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2023-04-02 05:21:12,918 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=132, Invalid=1128, Unknown=0, NotChecked=0, Total=1260 [2023-04-02 05:21:12,919 INFO L87 Difference]: Start difference. First operand 18720 states and 26631 transitions. Second operand has 17 states, 17 states have (on average 6.411764705882353) internal successors, (109), 17 states have internal predecessors, (109), 4 states have call successors, (18), 13 states have call predecessors, (18), 13 states have return successors, (17), 4 states have call predecessors, (17), 3 states have call successors, (17) [2023-04-02 05:21:18,930 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-02 05:21:18,930 INFO L93 Difference]: Finished difference Result 30478 states and 43422 transitions. [2023-04-02 05:21:18,930 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-04-02 05:21:18,930 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 6.411764705882353) internal successors, (109), 17 states have internal predecessors, (109), 4 states have call successors, (18), 13 states have call predecessors, (18), 13 states have return successors, (17), 4 states have call predecessors, (17), 3 states have call successors, (17) Word has length 152 [2023-04-02 05:21:18,931 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-02 05:21:19,001 INFO L225 Difference]: With dead ends: 30478 [2023-04-02 05:21:19,001 INFO L226 Difference]: Without dead ends: 26026 [2023-04-02 05:21:19,015 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 205 GetRequests, 169 SyntacticMatches, 0 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 336 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=164, Invalid=1242, Unknown=0, NotChecked=0, Total=1406 [2023-04-02 05:21:19,015 INFO L413 NwaCegarLoop]: 62 mSDtfsCounter, 1466 mSDsluCounter, 1096 mSDsCounter, 0 mSdLazyCounter, 2743 mSolverCounterSat, 100 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1472 SdHoareTripleChecker+Valid, 1158 SdHoareTripleChecker+Invalid, 2843 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 100 IncrementalHoareTripleChecker+Valid, 2743 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2023-04-02 05:21:19,016 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1472 Valid, 1158 Invalid, 2843 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [100 Valid, 2743 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2023-04-02 05:21:19,034 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26026 states. [2023-04-02 05:21:24,214 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26026 to 26002. [2023-04-02 05:21:24,232 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 26002 states, 19752 states have (on average 1.4322093965168083) internal successors, (28289), 20101 states have internal predecessors, (28289), 2951 states have call successors, (2951), 2951 states have call predecessors, (2951), 3298 states have return successors, (5835), 2949 states have call predecessors, (5835), 2950 states have call successors, (5835) [2023-04-02 05:21:24,281 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26002 states to 26002 states and 37075 transitions. [2023-04-02 05:21:24,282 INFO L78 Accepts]: Start accepts. Automaton has 26002 states and 37075 transitions. Word has length 152 [2023-04-02 05:21:24,282 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-02 05:21:24,283 INFO L495 AbstractCegarLoop]: Abstraction has 26002 states and 37075 transitions. [2023-04-02 05:21:24,283 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 6.411764705882353) internal successors, (109), 17 states have internal predecessors, (109), 4 states have call successors, (18), 13 states have call predecessors, (18), 13 states have return successors, (17), 4 states have call predecessors, (17), 3 states have call successors, (17) [2023-04-02 05:21:24,283 INFO L276 IsEmpty]: Start isEmpty. Operand 26002 states and 37075 transitions. [2023-04-02 05:21:24,286 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 155 [2023-04-02 05:21:24,286 INFO L187 NwaCegarLoop]: Found error trace [2023-04-02 05:21:24,286 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, 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] [2023-04-02 05:21:24,293 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 05:21:24,488 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-02 05:21:24,488 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-02 05:21:24,488 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-02 05:21:24,488 INFO L85 PathProgramCache]: Analyzing trace with hash 1491288346, now seen corresponding path program 1 times [2023-04-02 05:21:24,488 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-02 05:21:24,489 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2133785204] [2023-04-02 05:21:24,489 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 05:21:24,489 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-02 05:21:24,504 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:21:24,650 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-02 05:21:24,653 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:21:24,655 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2023-04-02 05:21:24,656 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:21:24,658 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2023-04-02 05:21:24,659 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:21:24,681 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2023-04-02 05:21:24,683 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:21:24,693 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2023-04-02 05:21:24,694 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:21:24,705 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2023-04-02 05:21:24,709 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:21:24,726 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2023-04-02 05:21:24,727 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:21:24,738 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2023-04-02 05:21:24,740 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:21:24,752 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2023-04-02 05:21:24,753 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:21:24,755 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2023-04-02 05:21:24,755 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:21:24,756 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2023-04-02 05:21:24,757 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:21:24,758 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 106 [2023-04-02 05:21:24,759 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:21:24,782 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 111 [2023-04-02 05:21:24,783 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:21:24,784 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 116 [2023-04-02 05:21:24,785 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:21:24,786 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 125 [2023-04-02 05:21:24,787 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:21:24,788 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 130 [2023-04-02 05:21:24,789 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:21:24,790 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 135 [2023-04-02 05:21:24,790 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:21:24,791 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 141 [2023-04-02 05:21:24,792 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:21:24,793 INFO L134 CoverageAnalysis]: Checked inductivity of 44 backedges. 14 proven. 2 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2023-04-02 05:21:24,793 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-02 05:21:24,793 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2133785204] [2023-04-02 05:21:24,793 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2133785204] provided 0 perfect and 1 imperfect interpolant sequences [2023-04-02 05:21:24,793 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2068111963] [2023-04-02 05:21:24,793 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 05:21:24,793 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-02 05:21:24,793 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-04-02 05:21:24,794 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 05:21:24,796 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 05:21:24,961 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:21:24,965 INFO L262 TraceCheckSpWp]: Trace formula consists of 1089 conjuncts, 14 conjunts are in the unsatisfiable core [2023-04-02 05:21:24,967 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-04-02 05:21:25,096 INFO L134 CoverageAnalysis]: Checked inductivity of 44 backedges. 42 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-02 05:21:25,096 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-04-02 05:21:25,330 INFO L134 CoverageAnalysis]: Checked inductivity of 44 backedges. 17 proven. 4 refuted. 0 times theorem prover too weak. 23 trivial. 0 not checked. [2023-04-02 05:21:25,331 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2068111963] provided 0 perfect and 2 imperfect interpolant sequences [2023-04-02 05:21:25,331 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-04-02 05:21:25,331 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 6, 9] total 22 [2023-04-02 05:21:25,333 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1207956323] [2023-04-02 05:21:25,333 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-04-02 05:21:25,334 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2023-04-02 05:21:25,334 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-02 05:21:25,335 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2023-04-02 05:21:25,335 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=75, Invalid=387, Unknown=0, NotChecked=0, Total=462 [2023-04-02 05:21:25,335 INFO L87 Difference]: Start difference. First operand 26002 states and 37075 transitions. Second operand has 22 states, 21 states have (on average 8.333333333333334) internal successors, (175), 14 states have internal predecessors, (175), 7 states have call successors, (49), 14 states have call predecessors, (49), 9 states have return successors, (43), 7 states have call predecessors, (43), 7 states have call successors, (43) [2023-04-02 05:21:36,511 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-02 05:21:36,512 INFO L93 Difference]: Finished difference Result 63385 states and 90514 transitions. [2023-04-02 05:21:36,512 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 41 states. [2023-04-02 05:21:36,512 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 21 states have (on average 8.333333333333334) internal successors, (175), 14 states have internal predecessors, (175), 7 states have call successors, (49), 14 states have call predecessors, (49), 9 states have return successors, (43), 7 states have call predecessors, (43), 7 states have call successors, (43) Word has length 154 [2023-04-02 05:21:36,513 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-02 05:21:36,613 INFO L225 Difference]: With dead ends: 63385 [2023-04-02 05:21:36,613 INFO L226 Difference]: Without dead ends: 37459 [2023-04-02 05:21:36,658 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 405 GetRequests, 350 SyntacticMatches, 0 SemanticMatches, 55 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 756 ImplicationChecksByTransitivity, 2.5s TimeCoverageRelationStatistics Valid=652, Invalid=2540, Unknown=0, NotChecked=0, Total=3192 [2023-04-02 05:21:36,658 INFO L413 NwaCegarLoop]: 40 mSDtfsCounter, 2193 mSDsluCounter, 166 mSDsCounter, 0 mSdLazyCounter, 2429 mSolverCounterSat, 241 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2199 SdHoareTripleChecker+Valid, 206 SdHoareTripleChecker+Invalid, 2670 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 241 IncrementalHoareTripleChecker+Valid, 2429 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2023-04-02 05:21:36,659 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2199 Valid, 206 Invalid, 2670 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [241 Valid, 2429 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2023-04-02 05:21:36,686 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37459 states. [2023-04-02 05:21:44,032 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37459 to 36277. [2023-04-02 05:21:44,060 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 36277 states, 27388 states have (on average 1.4052139623192639) internal successors, (38486), 27970 states have internal predecessors, (38486), 4154 states have call successors, (4154), 4154 states have call predecessors, (4154), 4734 states have return successors, (7996), 4152 states have call predecessors, (7996), 4153 states have call successors, (7996) [2023-04-02 05:21:44,129 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36277 states to 36277 states and 50636 transitions. [2023-04-02 05:21:44,132 INFO L78 Accepts]: Start accepts. Automaton has 36277 states and 50636 transitions. Word has length 154 [2023-04-02 05:21:44,132 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-02 05:21:44,132 INFO L495 AbstractCegarLoop]: Abstraction has 36277 states and 50636 transitions. [2023-04-02 05:21:44,132 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 21 states have (on average 8.333333333333334) internal successors, (175), 14 states have internal predecessors, (175), 7 states have call successors, (49), 14 states have call predecessors, (49), 9 states have return successors, (43), 7 states have call predecessors, (43), 7 states have call successors, (43) [2023-04-02 05:21:44,132 INFO L276 IsEmpty]: Start isEmpty. Operand 36277 states and 50636 transitions. [2023-04-02 05:21:44,134 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 155 [2023-04-02 05:21:44,134 INFO L187 NwaCegarLoop]: Found error trace [2023-04-02 05:21:44,134 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, 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] [2023-04-02 05:21:44,141 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2023-04-02 05:21:44,338 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-02 05:21:44,339 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-02 05:21:44,339 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-02 05:21:44,339 INFO L85 PathProgramCache]: Analyzing trace with hash -255034425, now seen corresponding path program 1 times [2023-04-02 05:21:44,339 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-02 05:21:44,339 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [829305764] [2023-04-02 05:21:44,339 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 05:21:44,339 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-02 05:21:44,354 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:21:44,656 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-02 05:21:44,659 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:21:44,662 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2023-04-02 05:21:44,664 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:21:44,670 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2023-04-02 05:21:44,671 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:21:44,682 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2023-04-02 05:21:44,683 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:21:44,703 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2023-04-02 05:21:44,704 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:21:44,716 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2023-04-02 05:21:44,717 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:21:44,729 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2023-04-02 05:21:44,730 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:21:44,747 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2023-04-02 05:21:44,748 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:21:44,761 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2023-04-02 05:21:44,762 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:21:44,765 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2023-04-02 05:21:44,767 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:21:44,777 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2023-04-02 05:21:44,779 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:21:44,780 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 106 [2023-04-02 05:21:44,781 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:21:44,791 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 117 [2023-04-02 05:21:44,792 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:21:44,805 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 122 [2023-04-02 05:21:44,807 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:21:44,822 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 127 [2023-04-02 05:21:44,823 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:21:44,838 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 132 [2023-04-02 05:21:44,839 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:21:44,855 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 137 [2023-04-02 05:21:44,857 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:21:44,871 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 143 [2023-04-02 05:21:44,873 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:21:44,885 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 26 proven. 8 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2023-04-02 05:21:44,886 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-02 05:21:44,886 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [829305764] [2023-04-02 05:21:44,886 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [829305764] provided 0 perfect and 1 imperfect interpolant sequences [2023-04-02 05:21:44,886 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [644242496] [2023-04-02 05:21:44,886 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 05:21:44,886 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-02 05:21:44,886 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-04-02 05:21:44,890 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 05:21:44,892 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 05:21:45,048 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:21:45,052 INFO L262 TraceCheckSpWp]: Trace formula consists of 1090 conjuncts, 27 conjunts are in the unsatisfiable core [2023-04-02 05:21:45,055 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-04-02 05:21:46,179 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 38 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-04-02 05:21:46,179 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-04-02 05:21:46,179 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [644242496] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-02 05:21:46,179 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-04-02 05:21:46,180 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [21] total 37 [2023-04-02 05:21:46,180 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1904875714] [2023-04-02 05:21:46,180 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-02 05:21:46,180 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2023-04-02 05:21:46,180 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-02 05:21:46,181 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2023-04-02 05:21:46,181 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=135, Invalid=1197, Unknown=0, NotChecked=0, Total=1332 [2023-04-02 05:21:46,181 INFO L87 Difference]: Start difference. First operand 36277 states and 50636 transitions. Second operand has 18 states, 18 states have (on average 6.333333333333333) internal successors, (114), 18 states have internal predecessors, (114), 4 states have call successors, (19), 14 states have call predecessors, (19), 14 states have return successors, (18), 4 states have call predecessors, (18), 3 states have call successors, (18) [2023-04-02 05:21:56,339 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-02 05:21:56,339 INFO L93 Difference]: Finished difference Result 52728 states and 73567 transitions. [2023-04-02 05:21:56,340 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-04-02 05:21:56,340 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 6.333333333333333) internal successors, (114), 18 states have internal predecessors, (114), 4 states have call successors, (19), 14 states have call predecessors, (19), 14 states have return successors, (18), 4 states have call predecessors, (18), 3 states have call successors, (18) Word has length 154 [2023-04-02 05:21:56,340 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-02 05:21:56,468 INFO L225 Difference]: With dead ends: 52728 [2023-04-02 05:21:56,468 INFO L226 Difference]: Without dead ends: 49284 [2023-04-02 05:21:56,490 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 207 GetRequests, 170 SyntacticMatches, 0 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 366 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=168, Invalid=1314, Unknown=0, NotChecked=0, Total=1482 [2023-04-02 05:21:56,491 INFO L413 NwaCegarLoop]: 56 mSDtfsCounter, 1650 mSDsluCounter, 725 mSDsCounter, 0 mSdLazyCounter, 2837 mSolverCounterSat, 118 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1656 SdHoareTripleChecker+Valid, 781 SdHoareTripleChecker+Invalid, 2955 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 118 IncrementalHoareTripleChecker+Valid, 2837 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2023-04-02 05:21:56,491 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1656 Valid, 781 Invalid, 2955 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [118 Valid, 2837 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2023-04-02 05:21:56,524 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 49284 states. [2023-04-02 05:22:05,731 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 49284 to 48840. [2023-04-02 05:22:05,768 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 48840 states, 36877 states have (on average 1.4057813813488083) internal successors, (51841), 37647 states have internal predecessors, (51841), 5597 states have call successors, (5597), 5597 states have call predecessors, (5597), 6365 states have return successors, (10766), 5595 states have call predecessors, (10766), 5596 states have call successors, (10766) [2023-04-02 05:22:05,880 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 48840 states to 48840 states and 68204 transitions. [2023-04-02 05:22:05,882 INFO L78 Accepts]: Start accepts. Automaton has 48840 states and 68204 transitions. Word has length 154 [2023-04-02 05:22:05,882 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-02 05:22:05,882 INFO L495 AbstractCegarLoop]: Abstraction has 48840 states and 68204 transitions. [2023-04-02 05:22:05,882 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 6.333333333333333) internal successors, (114), 18 states have internal predecessors, (114), 4 states have call successors, (19), 14 states have call predecessors, (19), 14 states have return successors, (18), 4 states have call predecessors, (18), 3 states have call successors, (18) [2023-04-02 05:22:05,882 INFO L276 IsEmpty]: Start isEmpty. Operand 48840 states and 68204 transitions. [2023-04-02 05:22:05,885 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 156 [2023-04-02 05:22:05,885 INFO L187 NwaCegarLoop]: Found error trace [2023-04-02 05:22:05,886 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, 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] [2023-04-02 05:22:05,892 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2023-04-02 05:22:06,089 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-02 05:22:06,089 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-02 05:22:06,089 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-02 05:22:06,089 INFO L85 PathProgramCache]: Analyzing trace with hash -503566030, now seen corresponding path program 1 times [2023-04-02 05:22:06,090 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-02 05:22:06,090 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1618237134] [2023-04-02 05:22:06,090 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 05:22:06,090 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-02 05:22:06,108 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:22:06,276 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-02 05:22:06,278 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:22:06,282 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2023-04-02 05:22:06,284 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:22:06,286 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2023-04-02 05:22:06,286 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:22:06,295 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2023-04-02 05:22:06,296 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:22:06,305 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2023-04-02 05:22:06,307 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:22:06,320 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2023-04-02 05:22:06,322 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:22:06,334 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2023-04-02 05:22:06,336 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:22:06,349 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2023-04-02 05:22:06,351 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:22:06,364 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2023-04-02 05:22:06,366 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:22:06,368 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2023-04-02 05:22:06,368 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:22:06,369 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2023-04-02 05:22:06,370 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:22:06,371 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 106 [2023-04-02 05:22:06,372 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:22:06,374 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 115 [2023-04-02 05:22:06,375 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:22:06,402 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 120 [2023-04-02 05:22:06,404 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:22:06,405 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 125 [2023-04-02 05:22:06,406 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:22:06,407 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 130 [2023-04-02 05:22:06,407 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:22:06,408 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 135 [2023-04-02 05:22:06,409 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:22:06,410 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 141 [2023-04-02 05:22:06,410 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:22:06,411 INFO L134 CoverageAnalysis]: Checked inductivity of 44 backedges. 14 proven. 2 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2023-04-02 05:22:06,411 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-02 05:22:06,411 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1618237134] [2023-04-02 05:22:06,411 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1618237134] provided 0 perfect and 1 imperfect interpolant sequences [2023-04-02 05:22:06,412 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [182603894] [2023-04-02 05:22:06,412 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 05:22:06,412 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-02 05:22:06,412 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-04-02 05:22:06,417 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 05:22:06,422 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 05:22:06,600 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:22:06,605 INFO L262 TraceCheckSpWp]: Trace formula consists of 1089 conjuncts, 14 conjunts are in the unsatisfiable core [2023-04-02 05:22:06,608 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-04-02 05:22:06,965 INFO L134 CoverageAnalysis]: Checked inductivity of 44 backedges. 37 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-02 05:22:06,965 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-04-02 05:22:07,194 INFO L134 CoverageAnalysis]: Checked inductivity of 44 backedges. 19 proven. 2 refuted. 0 times theorem prover too weak. 23 trivial. 0 not checked. [2023-04-02 05:22:07,195 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [182603894] provided 0 perfect and 2 imperfect interpolant sequences [2023-04-02 05:22:07,195 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-04-02 05:22:07,195 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 9, 8] total 22 [2023-04-02 05:22:07,195 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [909044522] [2023-04-02 05:22:07,195 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-04-02 05:22:07,196 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2023-04-02 05:22:07,196 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-02 05:22:07,197 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2023-04-02 05:22:07,197 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=86, Invalid=376, Unknown=0, NotChecked=0, Total=462 [2023-04-02 05:22:07,197 INFO L87 Difference]: Start difference. First operand 48840 states and 68204 transitions. Second operand has 22 states, 21 states have (on average 8.523809523809524) internal successors, (179), 14 states have internal predecessors, (179), 7 states have call successors, (49), 15 states have call predecessors, (49), 10 states have return successors, (42), 7 states have call predecessors, (42), 7 states have call successors, (42) [2023-04-02 05:22:29,857 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-02 05:22:29,858 INFO L93 Difference]: Finished difference Result 144906 states and 203427 transitions. [2023-04-02 05:22:29,860 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 42 states. [2023-04-02 05:22:29,860 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 21 states have (on average 8.523809523809524) internal successors, (179), 14 states have internal predecessors, (179), 7 states have call successors, (49), 15 states have call predecessors, (49), 10 states have return successors, (42), 7 states have call predecessors, (42), 7 states have call successors, (42) Word has length 155 [2023-04-02 05:22:29,860 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-02 05:22:30,194 INFO L225 Difference]: With dead ends: 144906 [2023-04-02 05:22:30,194 INFO L226 Difference]: Without dead ends: 96192 [2023-04-02 05:22:30,267 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 406 GetRequests, 351 SyntacticMatches, 0 SemanticMatches, 55 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 806 ImplicationChecksByTransitivity, 3.0s TimeCoverageRelationStatistics Valid=699, Invalid=2493, Unknown=0, NotChecked=0, Total=3192 [2023-04-02 05:22:30,268 INFO L413 NwaCegarLoop]: 26 mSDtfsCounter, 1832 mSDsluCounter, 119 mSDsCounter, 0 mSdLazyCounter, 1917 mSolverCounterSat, 127 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1840 SdHoareTripleChecker+Valid, 145 SdHoareTripleChecker+Invalid, 2044 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 127 IncrementalHoareTripleChecker+Valid, 1917 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2023-04-02 05:22:30,268 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1840 Valid, 145 Invalid, 2044 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [127 Valid, 1917 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2023-04-02 05:22:30,346 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 96192 states. [2023-04-02 05:22:49,330 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 96192 to 93176. [2023-04-02 05:22:49,410 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 93176 states, 69789 states have (on average 1.3849890383871384) internal successors, (96657), 71219 states have internal predecessors, (96657), 10979 states have call successors, (10979), 10979 states have call predecessors, (10979), 12407 states have return successors, (21660), 10977 states have call predecessors, (21660), 10978 states have call successors, (21660) [2023-04-02 05:22:49,946 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 93176 states to 93176 states and 129296 transitions. [2023-04-02 05:22:49,954 INFO L78 Accepts]: Start accepts. Automaton has 93176 states and 129296 transitions. Word has length 155 [2023-04-02 05:22:49,954 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-02 05:22:49,955 INFO L495 AbstractCegarLoop]: Abstraction has 93176 states and 129296 transitions. [2023-04-02 05:22:49,955 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 21 states have (on average 8.523809523809524) internal successors, (179), 14 states have internal predecessors, (179), 7 states have call successors, (49), 15 states have call predecessors, (49), 10 states have return successors, (42), 7 states have call predecessors, (42), 7 states have call successors, (42) [2023-04-02 05:22:49,955 INFO L276 IsEmpty]: Start isEmpty. Operand 93176 states and 129296 transitions. [2023-04-02 05:22:49,959 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 158 [2023-04-02 05:22:49,960 INFO L187 NwaCegarLoop]: Found error trace [2023-04-02 05:22:49,960 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, 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] [2023-04-02 05:22:49,965 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2023-04-02 05:22:50,165 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-02 05:22:50,166 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-02 05:22:50,166 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-02 05:22:50,166 INFO L85 PathProgramCache]: Analyzing trace with hash 982339940, now seen corresponding path program 1 times [2023-04-02 05:22:50,166 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-02 05:22:50,166 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [398612888] [2023-04-02 05:22:50,166 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 05:22:50,166 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-02 05:22:50,190 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:22:50,359 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-02 05:22:50,361 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:22:50,363 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2023-04-02 05:22:50,365 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:22:50,368 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2023-04-02 05:22:50,368 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:22:50,378 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2023-04-02 05:22:50,379 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:22:50,390 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2023-04-02 05:22:50,391 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:22:50,402 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2023-04-02 05:22:50,403 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:22:50,417 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2023-04-02 05:22:50,418 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:22:50,438 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2023-04-02 05:22:50,439 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:22:50,460 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2023-04-02 05:22:50,462 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:22:50,464 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2023-04-02 05:22:50,465 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:22:50,466 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2023-04-02 05:22:50,467 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:22:50,468 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 106 [2023-04-02 05:22:50,469 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:22:50,470 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 115 [2023-04-02 05:22:50,471 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:22:50,473 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 122 [2023-04-02 05:22:50,474 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:22:50,497 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 127 [2023-04-02 05:22:50,499 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:22:50,500 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 132 [2023-04-02 05:22:50,501 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:22:50,502 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 137 [2023-04-02 05:22:50,503 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:22:50,504 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 143 [2023-04-02 05:22:50,505 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:22:50,506 INFO L134 CoverageAnalysis]: Checked inductivity of 44 backedges. 14 proven. 2 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2023-04-02 05:22:50,506 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-02 05:22:50,506 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [398612888] [2023-04-02 05:22:50,506 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [398612888] provided 0 perfect and 1 imperfect interpolant sequences [2023-04-02 05:22:50,506 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2067184303] [2023-04-02 05:22:50,506 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 05:22:50,506 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-02 05:22:50,506 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-04-02 05:22:50,507 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 05:22:50,508 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 05:22:50,676 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:22:50,680 INFO L262 TraceCheckSpWp]: Trace formula consists of 1092 conjuncts, 14 conjunts are in the unsatisfiable core [2023-04-02 05:22:50,683 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-04-02 05:22:50,830 INFO L134 CoverageAnalysis]: Checked inductivity of 44 backedges. 32 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-02 05:22:50,831 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-04-02 05:22:51,029 INFO L134 CoverageAnalysis]: Checked inductivity of 44 backedges. 19 proven. 2 refuted. 0 times theorem prover too weak. 23 trivial. 0 not checked. [2023-04-02 05:22:51,029 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2067184303] provided 0 perfect and 2 imperfect interpolant sequences [2023-04-02 05:22:51,029 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-04-02 05:22:51,029 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 9, 8] total 22 [2023-04-02 05:22:51,029 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1204738318] [2023-04-02 05:22:51,029 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-04-02 05:22:51,030 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2023-04-02 05:22:51,030 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-02 05:22:51,030 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2023-04-02 05:22:51,030 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=86, Invalid=376, Unknown=0, NotChecked=0, Total=462 [2023-04-02 05:22:51,030 INFO L87 Difference]: Start difference. First operand 93176 states and 129296 transitions. Second operand has 22 states, 21 states have (on average 8.761904761904763) internal successors, (184), 14 states have internal predecessors, (184), 7 states have call successors, (49), 16 states have call predecessors, (49), 10 states have return successors, (42), 7 states have call predecessors, (42), 7 states have call successors, (42)