/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-pthread/cs_stateful-1.i -------------------------------------------------------------------------------- This is Ultimate 0.2.3-dev-f954360 [2023-04-02 07:07:35,200 INFO L177 SettingsManager]: Resetting all preferences to default values... [2023-04-02 07:07:35,202 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2023-04-02 07:07:35,235 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2023-04-02 07:07:35,236 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2023-04-02 07:07:35,238 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2023-04-02 07:07:35,240 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2023-04-02 07:07:35,242 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2023-04-02 07:07:35,245 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2023-04-02 07:07:35,249 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2023-04-02 07:07:35,250 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2023-04-02 07:07:35,251 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2023-04-02 07:07:35,251 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2023-04-02 07:07:35,253 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2023-04-02 07:07:35,254 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2023-04-02 07:07:35,255 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2023-04-02 07:07:35,255 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2023-04-02 07:07:35,256 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2023-04-02 07:07:35,257 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2023-04-02 07:07:35,261 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2023-04-02 07:07:35,262 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2023-04-02 07:07:35,263 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2023-04-02 07:07:35,264 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2023-04-02 07:07:35,265 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2023-04-02 07:07:35,270 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2023-04-02 07:07:35,270 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2023-04-02 07:07:35,270 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2023-04-02 07:07:35,272 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2023-04-02 07:07:35,272 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2023-04-02 07:07:35,273 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2023-04-02 07:07:35,273 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2023-04-02 07:07:35,273 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2023-04-02 07:07:35,274 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2023-04-02 07:07:35,275 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2023-04-02 07:07:35,275 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2023-04-02 07:07:35,275 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2023-04-02 07:07:35,276 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2023-04-02 07:07:35,276 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2023-04-02 07:07:35,276 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2023-04-02 07:07:35,276 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2023-04-02 07:07:35,277 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2023-04-02 07:07:35,278 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 07:07:35,302 INFO L113 SettingsManager]: Loading preferences was successful [2023-04-02 07:07:35,302 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2023-04-02 07:07:35,302 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-04-02 07:07:35,302 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-04-02 07:07:35,304 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-04-02 07:07:35,304 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-04-02 07:07:35,304 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-04-02 07:07:35,304 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2023-04-02 07:07:35,304 INFO L138 SettingsManager]: * Use SBE=true [2023-04-02 07:07:35,304 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-04-02 07:07:35,305 INFO L138 SettingsManager]: * sizeof long=4 [2023-04-02 07:07:35,305 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2023-04-02 07:07:35,305 INFO L138 SettingsManager]: * sizeof POINTER=4 [2023-04-02 07:07:35,305 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2023-04-02 07:07:35,305 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-04-02 07:07:35,305 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-04-02 07:07:35,306 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-04-02 07:07:35,306 INFO L138 SettingsManager]: * sizeof long double=12 [2023-04-02 07:07:35,306 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2023-04-02 07:07:35,306 INFO L138 SettingsManager]: * Use constant arrays=true [2023-04-02 07:07:35,306 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-04-02 07:07:35,306 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-04-02 07:07:35,306 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-04-02 07:07:35,306 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2023-04-02 07:07:35,306 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-04-02 07:07:35,306 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-04-02 07:07:35,307 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-04-02 07:07:35,307 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-04-02 07:07:35,307 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2023-04-02 07:07:35,307 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-04-02 07:07:35,307 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-04-02 07:07:35,307 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-04-02 07:07:35,307 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-04-02 07:07:35,307 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-04-02 07:07:35,307 INFO L138 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-04-02 07:07:35,308 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2023-04-02 07:07:35,506 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-04-02 07:07:35,522 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-04-02 07:07:35,524 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-04-02 07:07:35,525 INFO L271 PluginConnector]: Initializing CDTParser... [2023-04-02 07:07:35,526 INFO L275 PluginConnector]: CDTParser initialized [2023-04-02 07:07:35,527 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/seq-pthread/cs_stateful-1.i [2023-04-02 07:07:36,635 INFO L500 CDTParser]: Created temporary CDT project at NULL [2023-04-02 07:07:36,900 INFO L351 CDTParser]: Found 1 translation units. [2023-04-02 07:07:36,900 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/seq-pthread/cs_stateful-1.i [2023-04-02 07:07:36,912 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c0222e7b1/6b48edc978b845918ccff1140de16201/FLAGf5ec566fa [2023-04-02 07:07:36,924 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c0222e7b1/6b48edc978b845918ccff1140de16201 [2023-04-02 07:07:36,926 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-04-02 07:07:36,927 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2023-04-02 07:07:36,928 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-04-02 07:07:36,928 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-04-02 07:07:36,934 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2023-04-02 07:07:36,935 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.04 07:07:36" (1/1) ... [2023-04-02 07:07:36,936 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3d874a33 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.04 07:07:36, skipping insertion in model container [2023-04-02 07:07:36,936 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.04 07:07:36" (1/1) ... [2023-04-02 07:07:36,941 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2023-04-02 07:07:36,987 INFO L178 MainTranslator]: Built tables and reachable declarations [2023-04-02 07:07:37,240 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-pthread/cs_stateful-1.i[23400,23413] [2023-04-02 07:07:37,346 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-04-02 07:07:37,356 INFO L203 MainTranslator]: Completed pre-run [2023-04-02 07:07:37,373 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-pthread/cs_stateful-1.i[23400,23413] [2023-04-02 07:07:37,397 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-04-02 07:07:37,432 INFO L208 MainTranslator]: Completed translation [2023-04-02 07:07:37,433 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.04 07:07:37 WrapperNode [2023-04-02 07:07:37,433 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-04-02 07:07:37,434 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-04-02 07:07:37,434 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2023-04-02 07:07:37,434 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2023-04-02 07:07:37,442 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.04 07:07:37" (1/1) ... [2023-04-02 07:07:37,443 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.04 07:07:37" (1/1) ... [2023-04-02 07:07:37,490 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.04 07:07:37" (1/1) ... [2023-04-02 07:07:37,491 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.04 07:07:37" (1/1) ... [2023-04-02 07:07:37,517 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.04 07:07:37" (1/1) ... [2023-04-02 07:07:37,523 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.04 07:07:37" (1/1) ... [2023-04-02 07:07:37,531 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.04 07:07:37" (1/1) ... [2023-04-02 07:07:37,534 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.04 07:07:37" (1/1) ... [2023-04-02 07:07:37,541 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-04-02 07:07:37,542 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-04-02 07:07:37,542 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2023-04-02 07:07:37,542 INFO L275 PluginConnector]: RCFGBuilder initialized [2023-04-02 07:07:37,543 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.04 07:07:37" (1/1) ... [2023-04-02 07:07:37,561 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-04-02 07:07:37,572 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-04-02 07:07:37,594 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 07:07:37,620 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 07:07:37,635 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2023-04-02 07:07:37,636 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-04-02 07:07:37,637 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~TO~$Pointer$ [2023-04-02 07:07:37,638 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2023-04-02 07:07:37,638 INFO L138 BoogieDeclarations]: Found implementation of procedure __bswap_32 [2023-04-02 07:07:37,638 INFO L138 BoogieDeclarations]: Found implementation of procedure __bswap_64 [2023-04-02 07:07:37,638 INFO L138 BoogieDeclarations]: Found implementation of procedure __uint16_identity [2023-04-02 07:07:37,638 INFO L138 BoogieDeclarations]: Found implementation of procedure __uint32_identity [2023-04-02 07:07:37,638 INFO L138 BoogieDeclarations]: Found implementation of procedure __uint64_identity [2023-04-02 07:07:37,638 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2023-04-02 07:07:37,638 INFO L138 BoogieDeclarations]: Found implementation of procedure __CS_cs [2023-04-02 07:07:37,638 INFO L138 BoogieDeclarations]: Found implementation of procedure __CS_pthread_mutex_init [2023-04-02 07:07:37,638 INFO L138 BoogieDeclarations]: Found implementation of procedure __CS_pthread_mutex_destroy [2023-04-02 07:07:37,638 INFO L138 BoogieDeclarations]: Found implementation of procedure __CS_pthread_mutex_lock [2023-04-02 07:07:37,638 INFO L138 BoogieDeclarations]: Found implementation of procedure __CS_pthread_mutex_unlock [2023-04-02 07:07:37,639 INFO L138 BoogieDeclarations]: Found implementation of procedure __CS_pthread_cond_init [2023-04-02 07:07:37,639 INFO L138 BoogieDeclarations]: Found implementation of procedure __CS_pthread_cond_signal [2023-04-02 07:07:37,639 INFO L138 BoogieDeclarations]: Found implementation of procedure __CS_pthread_cond_broadcast [2023-04-02 07:07:37,639 INFO L138 BoogieDeclarations]: Found implementation of procedure __CS_pthread_cond_wait [2023-04-02 07:07:37,639 INFO L138 BoogieDeclarations]: Found implementation of procedure __CS_assert [2023-04-02 07:07:37,639 INFO L138 BoogieDeclarations]: Found implementation of procedure __CS_assume [2023-04-02 07:07:37,639 INFO L138 BoogieDeclarations]: Found implementation of procedure __CS_pthread_join [2023-04-02 07:07:37,639 INFO L138 BoogieDeclarations]: Found implementation of procedure __CS_pthread_create [2023-04-02 07:07:37,639 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2023-04-02 07:07:37,639 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2023-04-02 07:07:37,639 INFO L138 BoogieDeclarations]: Found implementation of procedure main_thread [2023-04-02 07:07:37,639 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2023-04-02 07:07:37,639 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2023-04-02 07:07:37,640 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2023-04-02 07:07:37,640 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_perror_fail [2023-04-02 07:07:37,640 INFO L130 BoogieDeclarations]: Found specification of procedure __assert [2023-04-02 07:07:37,640 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2023-04-02 07:07:37,640 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-04-02 07:07:37,640 INFO L130 BoogieDeclarations]: Found specification of procedure __ctype_get_mb_cur_max [2023-04-02 07:07:37,641 INFO L130 BoogieDeclarations]: Found specification of procedure atof [2023-04-02 07:07:37,641 INFO L130 BoogieDeclarations]: Found specification of procedure atoi [2023-04-02 07:07:37,641 INFO L130 BoogieDeclarations]: Found specification of procedure atol [2023-04-02 07:07:37,641 INFO L130 BoogieDeclarations]: Found specification of procedure atoll [2023-04-02 07:07:37,641 INFO L130 BoogieDeclarations]: Found specification of procedure strtod [2023-04-02 07:07:37,641 INFO L130 BoogieDeclarations]: Found specification of procedure strtof [2023-04-02 07:07:37,641 INFO L130 BoogieDeclarations]: Found specification of procedure strtold [2023-04-02 07:07:37,641 INFO L130 BoogieDeclarations]: Found specification of procedure strtol [2023-04-02 07:07:37,641 INFO L130 BoogieDeclarations]: Found specification of procedure strtoul [2023-04-02 07:07:37,641 INFO L130 BoogieDeclarations]: Found specification of procedure strtoq [2023-04-02 07:07:37,641 INFO L130 BoogieDeclarations]: Found specification of procedure strtouq [2023-04-02 07:07:37,641 INFO L130 BoogieDeclarations]: Found specification of procedure strtoll [2023-04-02 07:07:37,641 INFO L130 BoogieDeclarations]: Found specification of procedure strtoull [2023-04-02 07:07:37,641 INFO L130 BoogieDeclarations]: Found specification of procedure l64a [2023-04-02 07:07:37,642 INFO L130 BoogieDeclarations]: Found specification of procedure a64l [2023-04-02 07:07:37,642 INFO L130 BoogieDeclarations]: Found specification of procedure __bswap_32 [2023-04-02 07:07:37,642 INFO L130 BoogieDeclarations]: Found specification of procedure __bswap_64 [2023-04-02 07:07:37,642 INFO L130 BoogieDeclarations]: Found specification of procedure __uint16_identity [2023-04-02 07:07:37,643 INFO L130 BoogieDeclarations]: Found specification of procedure __uint32_identity [2023-04-02 07:07:37,643 INFO L130 BoogieDeclarations]: Found specification of procedure __uint64_identity [2023-04-02 07:07:37,643 INFO L130 BoogieDeclarations]: Found specification of procedure select [2023-04-02 07:07:37,643 INFO L130 BoogieDeclarations]: Found specification of procedure pselect [2023-04-02 07:07:37,643 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_major [2023-04-02 07:07:37,644 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_minor [2023-04-02 07:07:37,644 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_makedev [2023-04-02 07:07:37,644 INFO L130 BoogieDeclarations]: Found specification of procedure random [2023-04-02 07:07:37,644 INFO L130 BoogieDeclarations]: Found specification of procedure srandom [2023-04-02 07:07:37,644 INFO L130 BoogieDeclarations]: Found specification of procedure initstate [2023-04-02 07:07:37,644 INFO L130 BoogieDeclarations]: Found specification of procedure setstate [2023-04-02 07:07:37,644 INFO L130 BoogieDeclarations]: Found specification of procedure random_r [2023-04-02 07:07:37,645 INFO L130 BoogieDeclarations]: Found specification of procedure srandom_r [2023-04-02 07:07:37,645 INFO L130 BoogieDeclarations]: Found specification of procedure initstate_r [2023-04-02 07:07:37,645 INFO L130 BoogieDeclarations]: Found specification of procedure setstate_r [2023-04-02 07:07:37,645 INFO L130 BoogieDeclarations]: Found specification of procedure rand [2023-04-02 07:07:37,645 INFO L130 BoogieDeclarations]: Found specification of procedure srand [2023-04-02 07:07:37,645 INFO L130 BoogieDeclarations]: Found specification of procedure rand_r [2023-04-02 07:07:37,645 INFO L130 BoogieDeclarations]: Found specification of procedure drand48 [2023-04-02 07:07:37,645 INFO L130 BoogieDeclarations]: Found specification of procedure erand48 [2023-04-02 07:07:37,645 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48 [2023-04-02 07:07:37,645 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48 [2023-04-02 07:07:37,645 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48 [2023-04-02 07:07:37,645 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48 [2023-04-02 07:07:37,645 INFO L130 BoogieDeclarations]: Found specification of procedure srand48 [2023-04-02 07:07:37,645 INFO L130 BoogieDeclarations]: Found specification of procedure seed48 [2023-04-02 07:07:37,645 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48 [2023-04-02 07:07:37,646 INFO L130 BoogieDeclarations]: Found specification of procedure drand48_r [2023-04-02 07:07:37,646 INFO L130 BoogieDeclarations]: Found specification of procedure erand48_r [2023-04-02 07:07:37,646 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48_r [2023-04-02 07:07:37,646 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48_r [2023-04-02 07:07:37,646 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48_r [2023-04-02 07:07:37,646 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48_r [2023-04-02 07:07:37,646 INFO L130 BoogieDeclarations]: Found specification of procedure srand48_r [2023-04-02 07:07:37,646 INFO L130 BoogieDeclarations]: Found specification of procedure seed48_r [2023-04-02 07:07:37,646 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48_r [2023-04-02 07:07:37,647 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2023-04-02 07:07:37,647 INFO L130 BoogieDeclarations]: Found specification of procedure calloc [2023-04-02 07:07:37,647 INFO L130 BoogieDeclarations]: Found specification of procedure realloc [2023-04-02 07:07:37,647 INFO L130 BoogieDeclarations]: Found specification of procedure free [2023-04-02 07:07:37,647 INFO L130 BoogieDeclarations]: Found specification of procedure alloca [2023-04-02 07:07:37,647 INFO L130 BoogieDeclarations]: Found specification of procedure valloc [2023-04-02 07:07:37,647 INFO L130 BoogieDeclarations]: Found specification of procedure posix_memalign [2023-04-02 07:07:37,647 INFO L130 BoogieDeclarations]: Found specification of procedure aligned_alloc [2023-04-02 07:07:37,647 INFO L130 BoogieDeclarations]: Found specification of procedure atexit [2023-04-02 07:07:37,647 INFO L130 BoogieDeclarations]: Found specification of procedure at_quick_exit [2023-04-02 07:07:37,647 INFO L130 BoogieDeclarations]: Found specification of procedure on_exit [2023-04-02 07:07:37,647 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2023-04-02 07:07:37,647 INFO L130 BoogieDeclarations]: Found specification of procedure quick_exit [2023-04-02 07:07:37,648 INFO L130 BoogieDeclarations]: Found specification of procedure _Exit [2023-04-02 07:07:37,648 INFO L130 BoogieDeclarations]: Found specification of procedure getenv [2023-04-02 07:07:37,648 INFO L130 BoogieDeclarations]: Found specification of procedure putenv [2023-04-02 07:07:37,648 INFO L130 BoogieDeclarations]: Found specification of procedure setenv [2023-04-02 07:07:37,648 INFO L130 BoogieDeclarations]: Found specification of procedure unsetenv [2023-04-02 07:07:37,648 INFO L130 BoogieDeclarations]: Found specification of procedure clearenv [2023-04-02 07:07:37,648 INFO L130 BoogieDeclarations]: Found specification of procedure mktemp [2023-04-02 07:07:37,648 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemp [2023-04-02 07:07:37,648 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemps [2023-04-02 07:07:37,648 INFO L130 BoogieDeclarations]: Found specification of procedure mkdtemp [2023-04-02 07:07:37,648 INFO L130 BoogieDeclarations]: Found specification of procedure system [2023-04-02 07:07:37,648 INFO L130 BoogieDeclarations]: Found specification of procedure realpath [2023-04-02 07:07:37,649 INFO L130 BoogieDeclarations]: Found specification of procedure bsearch [2023-04-02 07:07:37,649 INFO L130 BoogieDeclarations]: Found specification of procedure qsort [2023-04-02 07:07:37,649 INFO L130 BoogieDeclarations]: Found specification of procedure abs [2023-04-02 07:07:37,649 INFO L130 BoogieDeclarations]: Found specification of procedure labs [2023-04-02 07:07:37,649 INFO L130 BoogieDeclarations]: Found specification of procedure llabs [2023-04-02 07:07:37,649 INFO L130 BoogieDeclarations]: Found specification of procedure div [2023-04-02 07:07:37,649 INFO L130 BoogieDeclarations]: Found specification of procedure ldiv [2023-04-02 07:07:37,649 INFO L130 BoogieDeclarations]: Found specification of procedure lldiv [2023-04-02 07:07:37,649 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt [2023-04-02 07:07:37,650 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt [2023-04-02 07:07:37,650 INFO L130 BoogieDeclarations]: Found specification of procedure gcvt [2023-04-02 07:07:37,650 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt [2023-04-02 07:07:37,650 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt [2023-04-02 07:07:37,651 INFO L130 BoogieDeclarations]: Found specification of procedure qgcvt [2023-04-02 07:07:37,651 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt_r [2023-04-02 07:07:37,651 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt_r [2023-04-02 07:07:37,653 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt_r [2023-04-02 07:07:37,653 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt_r [2023-04-02 07:07:37,653 INFO L130 BoogieDeclarations]: Found specification of procedure mblen [2023-04-02 07:07:37,653 INFO L130 BoogieDeclarations]: Found specification of procedure mbtowc [2023-04-02 07:07:37,653 INFO L130 BoogieDeclarations]: Found specification of procedure wctomb [2023-04-02 07:07:37,653 INFO L130 BoogieDeclarations]: Found specification of procedure mbstowcs [2023-04-02 07:07:37,653 INFO L130 BoogieDeclarations]: Found specification of procedure wcstombs [2023-04-02 07:07:37,653 INFO L130 BoogieDeclarations]: Found specification of procedure rpmatch [2023-04-02 07:07:37,653 INFO L130 BoogieDeclarations]: Found specification of procedure getsubopt [2023-04-02 07:07:37,653 INFO L130 BoogieDeclarations]: Found specification of procedure getloadavg [2023-04-02 07:07:37,653 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2023-04-02 07:07:37,653 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2023-04-02 07:07:37,653 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_uchar [2023-04-02 07:07:37,654 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_ulong [2023-04-02 07:07:37,654 INFO L130 BoogieDeclarations]: Found specification of procedure __CS_cs [2023-04-02 07:07:37,654 INFO L130 BoogieDeclarations]: Found specification of procedure __CS_pthread_mutex_init [2023-04-02 07:07:37,654 INFO L130 BoogieDeclarations]: Found specification of procedure __CS_pthread_mutex_destroy [2023-04-02 07:07:37,654 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-04-02 07:07:37,654 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-04-02 07:07:37,654 INFO L130 BoogieDeclarations]: Found specification of procedure __CS_pthread_mutex_lock [2023-04-02 07:07:37,654 INFO L130 BoogieDeclarations]: Found specification of procedure __CS_pthread_mutex_unlock [2023-04-02 07:07:37,654 INFO L130 BoogieDeclarations]: Found specification of procedure __CS_pthread_cond_init [2023-04-02 07:07:37,654 INFO L130 BoogieDeclarations]: Found specification of procedure __CS_pthread_cond_signal [2023-04-02 07:07:37,654 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2023-04-02 07:07:37,654 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2023-04-02 07:07:37,654 INFO L130 BoogieDeclarations]: Found specification of procedure __CS_pthread_cond_broadcast [2023-04-02 07:07:37,654 INFO L130 BoogieDeclarations]: Found specification of procedure __CS_pthread_cond_wait [2023-04-02 07:07:37,654 INFO L130 BoogieDeclarations]: Found specification of procedure __CS_assert [2023-04-02 07:07:37,654 INFO L130 BoogieDeclarations]: Found specification of procedure __CS_assume [2023-04-02 07:07:37,655 INFO L130 BoogieDeclarations]: Found specification of procedure __CS_pthread_join [2023-04-02 07:07:37,655 INFO L130 BoogieDeclarations]: Found specification of procedure __CS_pthread_create [2023-04-02 07:07:37,655 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2023-04-02 07:07:37,655 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2023-04-02 07:07:37,655 INFO L130 BoogieDeclarations]: Found specification of procedure main_thread [2023-04-02 07:07:37,655 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-04-02 07:07:37,655 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-04-02 07:07:37,655 INFO L130 BoogieDeclarations]: Found specification of procedure main [2023-04-02 07:07:37,655 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~TO~$Pointer$ [2023-04-02 07:07:37,655 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2023-04-02 07:07:37,655 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-04-02 07:07:37,655 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2023-04-02 07:07:37,655 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-04-02 07:07:37,927 INFO L236 CfgBuilder]: Building ICFG [2023-04-02 07:07:37,931 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-04-02 07:07:38,124 INFO L771 $ProcedureCfgBuilder]: dead code at ProgramPoint L746: SUMMARY for call __CS_cs(); srcloc: null [2023-04-02 07:07:38,124 INFO L771 $ProcedureCfgBuilder]: dead code at ProgramPoint L746-1: assume 0 != (if ~__CS_ret~0 % 256 % 4294967296 <= 2147483647 then ~__CS_ret~0 % 256 % 4294967296 else ~__CS_ret~0 % 256 % 4294967296 - 4294967296);#res.base, #res.offset := 0, 0;call ULTIMATE.dealloc(~#t1~0.base, ~#t1~0.offset);havoc ~#t1~0.base, ~#t1~0.offset;call ULTIMATE.dealloc(~#t2~0.base, ~#t2~0.offset);havoc ~#t2~0.base, ~#t2~0.offset; [2023-04-02 07:07:38,124 INFO L771 $ProcedureCfgBuilder]: dead code at ProgramPoint L746-1: assume !(0 != (if ~__CS_ret~0 % 256 % 4294967296 <= 2147483647 then ~__CS_ret~0 % 256 % 4294967296 else ~__CS_ret~0 % 256 % 4294967296 - 4294967296)); [2023-04-02 07:07:38,124 INFO L771 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##29: assume !(0 != (if ~__CS_ret~0 % 256 % 4294967296 <= 2147483647 then ~__CS_ret~0 % 256 % 4294967296 else ~__CS_ret~0 % 256 % 4294967296 - 4294967296)); [2023-04-02 07:07:38,125 INFO L771 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##28: assume 0 != (if ~__CS_ret~0 % 256 % 4294967296 <= 2147483647 then ~__CS_ret~0 % 256 % 4294967296 else ~__CS_ret~0 % 256 % 4294967296 - 4294967296);#res.base, #res.offset := 0, 0;call ULTIMATE.dealloc(~#t1~0.base, ~#t1~0.offset);havoc ~#t1~0.base, ~#t1~0.offset;call ULTIMATE.dealloc(~#t2~0.base, ~#t2~0.offset);havoc ~#t2~0.base, ~#t2~0.offset; [2023-04-02 07:07:38,125 INFO L771 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##27: assume !(0 != (if ~__CS_ret~0 % 256 % 4294967296 <= 2147483647 then ~__CS_ret~0 % 256 % 4294967296 else ~__CS_ret~0 % 256 % 4294967296 - 4294967296)); [2023-04-02 07:07:38,125 INFO L771 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##26: assume 0 != (if ~__CS_ret~0 % 256 % 4294967296 <= 2147483647 then ~__CS_ret~0 % 256 % 4294967296 else ~__CS_ret~0 % 256 % 4294967296 - 4294967296);#res.base, #res.offset := 0, 0;call ULTIMATE.dealloc(~#t1~0.base, ~#t1~0.offset);havoc ~#t1~0.base, ~#t1~0.offset;call ULTIMATE.dealloc(~#t2~0.base, ~#t2~0.offset);havoc ~#t2~0.base, ~#t2~0.offset; [2023-04-02 07:07:40,350 INFO L277 CfgBuilder]: Performing block encoding [2023-04-02 07:07:40,359 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-04-02 07:07:40,359 INFO L302 CfgBuilder]: Removed 4 assume(true) statements. [2023-04-02 07:07:40,362 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.04 07:07:40 BoogieIcfgContainer [2023-04-02 07:07:40,362 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-04-02 07:07:40,364 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-04-02 07:07:40,364 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2023-04-02 07:07:40,366 INFO L275 PluginConnector]: TraceAbstraction initialized [2023-04-02 07:07:40,366 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 02.04 07:07:36" (1/3) ... [2023-04-02 07:07:40,367 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7cb6a63e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.04 07:07:40, skipping insertion in model container [2023-04-02 07:07:40,367 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.04 07:07:37" (2/3) ... [2023-04-02 07:07:40,367 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7cb6a63e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.04 07:07:40, skipping insertion in model container [2023-04-02 07:07:40,367 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.04 07:07:40" (3/3) ... [2023-04-02 07:07:40,368 INFO L112 eAbstractionObserver]: Analyzing ICFG cs_stateful-1.i [2023-04-02 07:07:40,381 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-04-02 07:07:40,381 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-04-02 07:07:40,429 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-04-02 07:07:40,435 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;@3a87cfe4, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-04-02 07:07:40,435 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-04-02 07:07:40,440 INFO L276 IsEmpty]: Start isEmpty. Operand has 190 states, 127 states have (on average 1.4724409448818898) internal successors, (187), 128 states have internal predecessors, (187), 48 states have call successors, (48), 13 states have call predecessors, (48), 13 states have return successors, (48), 48 states have call predecessors, (48), 48 states have call successors, (48) [2023-04-02 07:07:40,450 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2023-04-02 07:07:40,450 INFO L187 NwaCegarLoop]: Found error trace [2023-04-02 07:07:40,451 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] [2023-04-02 07:07:40,451 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-02 07:07:40,461 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-02 07:07:40,461 INFO L85 PathProgramCache]: Analyzing trace with hash -1979930045, now seen corresponding path program 1 times [2023-04-02 07:07:40,468 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-02 07:07:40,469 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [950167184] [2023-04-02 07:07:40,469 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 07:07:40,469 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-02 07:07:40,706 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 07:07:40,990 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-02 07:07:41,002 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 07:07:41,022 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 07:07:41,023 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-02 07:07:41,023 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [950167184] [2023-04-02 07:07:41,023 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [950167184] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-02 07:07:41,023 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-02 07:07:41,024 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-04-02 07:07:41,025 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1056971639] [2023-04-02 07:07:41,025 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-02 07:07:41,028 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-04-02 07:07:41,028 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-02 07:07:41,054 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-04-02 07:07:41,054 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-04-02 07:07:41,058 INFO L87 Difference]: Start difference. First operand has 190 states, 127 states have (on average 1.4724409448818898) internal successors, (187), 128 states have internal predecessors, (187), 48 states have call successors, (48), 13 states have call predecessors, (48), 13 states have return successors, (48), 48 states have call predecessors, (48), 48 states have call successors, (48) Second operand has 3 states, 3 states have (on average 11.0) internal successors, (33), 2 states have internal predecessors, (33), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-02 07:07:43,125 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-04-02 07:07:45,130 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-04-02 07:07:46,004 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-02 07:07:46,004 INFO L93 Difference]: Finished difference Result 382 states and 610 transitions. [2023-04-02 07:07:46,006 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-04-02 07:07:46,007 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 11.0) internal successors, (33), 2 states have internal predecessors, (33), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 37 [2023-04-02 07:07:46,007 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-02 07:07:46,014 INFO L225 Difference]: With dead ends: 382 [2023-04-02 07:07:46,014 INFO L226 Difference]: Without dead ends: 191 [2023-04-02 07:07:46,018 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-04-02 07:07:46,020 INFO L413 NwaCegarLoop]: 222 mSDtfsCounter, 44 mSDsluCounter, 4 mSDsCounter, 0 mSdLazyCounter, 243 mSolverCounterSat, 47 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 44 SdHoareTripleChecker+Valid, 226 SdHoareTripleChecker+Invalid, 292 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 47 IncrementalHoareTripleChecker+Valid, 243 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.8s IncrementalHoareTripleChecker+Time [2023-04-02 07:07:46,021 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [44 Valid, 226 Invalid, 292 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [47 Valid, 243 Invalid, 2 Unknown, 0 Unchecked, 4.8s Time] [2023-04-02 07:07:46,033 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 191 states. [2023-04-02 07:07:46,077 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 191 to 183. [2023-04-02 07:07:46,078 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 183 states, 123 states have (on average 1.3577235772357723) internal successors, (167), 123 states have internal predecessors, (167), 48 states have call successors, (48), 13 states have call predecessors, (48), 11 states have return successors, (46), 46 states have call predecessors, (46), 46 states have call successors, (46) [2023-04-02 07:07:46,080 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 183 states to 183 states and 261 transitions. [2023-04-02 07:07:46,081 INFO L78 Accepts]: Start accepts. Automaton has 183 states and 261 transitions. Word has length 37 [2023-04-02 07:07:46,081 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-02 07:07:46,081 INFO L495 AbstractCegarLoop]: Abstraction has 183 states and 261 transitions. [2023-04-02 07:07:46,081 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 11.0) internal successors, (33), 2 states have internal predecessors, (33), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-02 07:07:46,082 INFO L276 IsEmpty]: Start isEmpty. Operand 183 states and 261 transitions. [2023-04-02 07:07:46,083 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2023-04-02 07:07:46,083 INFO L187 NwaCegarLoop]: Found error trace [2023-04-02 07:07:46,084 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] [2023-04-02 07:07:46,084 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-04-02 07:07:46,084 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-02 07:07:46,084 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-02 07:07:46,084 INFO L85 PathProgramCache]: Analyzing trace with hash -180811967, now seen corresponding path program 1 times [2023-04-02 07:07:46,085 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-02 07:07:46,085 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [775754164] [2023-04-02 07:07:46,085 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 07:07:46,085 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-02 07:07:46,214 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 07:07:46,478 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-02 07:07:46,483 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 07:07:46,489 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 07:07:46,489 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-02 07:07:46,489 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [775754164] [2023-04-02 07:07:46,490 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [775754164] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-02 07:07:46,490 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-02 07:07:46,490 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-04-02 07:07:46,490 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [528915301] [2023-04-02 07:07:46,490 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-02 07:07:46,491 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-04-02 07:07:46,491 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-02 07:07:46,492 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-04-02 07:07:46,492 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-04-02 07:07:46,492 INFO L87 Difference]: Start difference. First operand 183 states and 261 transitions. Second operand has 4 states, 4 states have (on average 8.25) internal successors, (33), 3 states have internal predecessors, (33), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-02 07:07:48,458 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.86s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-04-02 07:07:50,473 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-04-02 07:07:52,487 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-04-02 07:07:53,182 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-02 07:07:53,182 INFO L93 Difference]: Finished difference Result 368 states and 532 transitions. [2023-04-02 07:07:53,183 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-04-02 07:07:53,183 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 8.25) internal successors, (33), 3 states have internal predecessors, (33), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 37 [2023-04-02 07:07:53,183 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-02 07:07:53,189 INFO L225 Difference]: With dead ends: 368 [2023-04-02 07:07:53,189 INFO L226 Difference]: Without dead ends: 196 [2023-04-02 07:07:53,192 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-04-02 07:07:53,193 INFO L413 NwaCegarLoop]: 217 mSDtfsCounter, 53 mSDsluCounter, 199 mSDsCounter, 0 mSdLazyCounter, 314 mSolverCounterSat, 47 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 53 SdHoareTripleChecker+Valid, 416 SdHoareTripleChecker+Invalid, 363 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 47 IncrementalHoareTripleChecker+Valid, 314 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.5s IncrementalHoareTripleChecker+Time [2023-04-02 07:07:53,195 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [53 Valid, 416 Invalid, 363 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [47 Valid, 314 Invalid, 2 Unknown, 0 Unchecked, 6.5s Time] [2023-04-02 07:07:53,197 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 196 states. [2023-04-02 07:07:53,229 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 196 to 184. [2023-04-02 07:07:53,229 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 184 states, 124 states have (on average 1.3548387096774193) internal successors, (168), 124 states have internal predecessors, (168), 48 states have call successors, (48), 13 states have call predecessors, (48), 11 states have return successors, (46), 46 states have call predecessors, (46), 46 states have call successors, (46) [2023-04-02 07:07:53,231 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 184 states to 184 states and 262 transitions. [2023-04-02 07:07:53,231 INFO L78 Accepts]: Start accepts. Automaton has 184 states and 262 transitions. Word has length 37 [2023-04-02 07:07:53,231 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-02 07:07:53,231 INFO L495 AbstractCegarLoop]: Abstraction has 184 states and 262 transitions. [2023-04-02 07:07:53,231 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 8.25) internal successors, (33), 3 states have internal predecessors, (33), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-02 07:07:53,232 INFO L276 IsEmpty]: Start isEmpty. Operand 184 states and 262 transitions. [2023-04-02 07:07:53,237 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2023-04-02 07:07:53,237 INFO L187 NwaCegarLoop]: Found error trace [2023-04-02 07:07:53,237 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] [2023-04-02 07:07:53,237 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-04-02 07:07:53,249 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-02 07:07:53,250 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-02 07:07:53,250 INFO L85 PathProgramCache]: Analyzing trace with hash -1196410887, now seen corresponding path program 1 times [2023-04-02 07:07:53,250 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-02 07:07:53,250 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1979661845] [2023-04-02 07:07:53,250 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 07:07:53,250 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-02 07:07:53,306 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 07:07:53,543 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-02 07:07:53,548 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 07:07:53,557 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-02 07:07:53,558 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-02 07:07:53,558 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1979661845] [2023-04-02 07:07:53,558 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1979661845] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-02 07:07:53,558 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-02 07:07:53,558 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-04-02 07:07:53,559 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [25670435] [2023-04-02 07:07:53,559 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-02 07:07:53,559 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-04-02 07:07:53,559 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-02 07:07:53,560 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-04-02 07:07:53,560 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-04-02 07:07:53,560 INFO L87 Difference]: Start difference. First operand 184 states and 262 transitions. Second operand has 4 states, 4 states have (on average 9.25) internal successors, (37), 3 states have internal predecessors, (37), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-02 07:07:55,903 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-04-02 07:07:57,907 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-04-02 07:07:58,553 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-02 07:07:58,553 INFO L93 Difference]: Finished difference Result 371 states and 536 transitions. [2023-04-02 07:07:58,553 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-04-02 07:07:58,554 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 9.25) internal successors, (37), 3 states have internal predecessors, (37), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 41 [2023-04-02 07:07:58,554 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-02 07:07:58,555 INFO L225 Difference]: With dead ends: 371 [2023-04-02 07:07:58,555 INFO L226 Difference]: Without dead ends: 194 [2023-04-02 07:07:58,556 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-04-02 07:07:58,556 INFO L413 NwaCegarLoop]: 217 mSDtfsCounter, 45 mSDsluCounter, 199 mSDsCounter, 0 mSdLazyCounter, 314 mSolverCounterSat, 47 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 45 SdHoareTripleChecker+Valid, 416 SdHoareTripleChecker+Invalid, 363 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 47 IncrementalHoareTripleChecker+Valid, 314 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.9s IncrementalHoareTripleChecker+Time [2023-04-02 07:07:58,557 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [45 Valid, 416 Invalid, 363 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [47 Valid, 314 Invalid, 2 Unknown, 0 Unchecked, 4.9s Time] [2023-04-02 07:07:58,557 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 194 states. [2023-04-02 07:07:58,588 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 194 to 185. [2023-04-02 07:07:58,589 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 185 states, 125 states have (on average 1.352) internal successors, (169), 125 states have internal predecessors, (169), 48 states have call successors, (48), 13 states have call predecessors, (48), 11 states have return successors, (46), 46 states have call predecessors, (46), 46 states have call successors, (46) [2023-04-02 07:07:58,590 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 185 states to 185 states and 263 transitions. [2023-04-02 07:07:58,590 INFO L78 Accepts]: Start accepts. Automaton has 185 states and 263 transitions. Word has length 41 [2023-04-02 07:07:58,590 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-02 07:07:58,590 INFO L495 AbstractCegarLoop]: Abstraction has 185 states and 263 transitions. [2023-04-02 07:07:58,590 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 9.25) internal successors, (37), 3 states have internal predecessors, (37), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-02 07:07:58,590 INFO L276 IsEmpty]: Start isEmpty. Operand 185 states and 263 transitions. [2023-04-02 07:07:58,591 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2023-04-02 07:07:58,591 INFO L187 NwaCegarLoop]: Found error trace [2023-04-02 07:07:58,591 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] [2023-04-02 07:07:58,591 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-04-02 07:07:58,591 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-02 07:07:58,592 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-02 07:07:58,592 INFO L85 PathProgramCache]: Analyzing trace with hash -1054850693, now seen corresponding path program 1 times [2023-04-02 07:07:58,592 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-02 07:07:58,592 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1812480909] [2023-04-02 07:07:58,592 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 07:07:58,592 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-02 07:07:58,700 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 07:07:58,997 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-02 07:07:59,002 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 07:07:59,009 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-02 07:07:59,009 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-02 07:07:59,010 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1812480909] [2023-04-02 07:07:59,010 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1812480909] provided 0 perfect and 1 imperfect interpolant sequences [2023-04-02 07:07:59,010 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [221268201] [2023-04-02 07:07:59,010 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 07:07:59,010 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-02 07:07:59,010 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-04-02 07:07:59,013 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 07:07:59,016 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 07:07:59,593 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 07:07:59,603 INFO L262 TraceCheckSpWp]: Trace formula consists of 1861 conjuncts, 3 conjunts are in the unsatisfiable core [2023-04-02 07:07:59,608 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-04-02 07:07:59,680 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-02 07:07:59,680 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-04-02 07:07:59,757 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-02 07:07:59,758 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [221268201] provided 0 perfect and 2 imperfect interpolant sequences [2023-04-02 07:07:59,758 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-04-02 07:07:59,758 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 4, 4] total 7 [2023-04-02 07:07:59,758 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [693032125] [2023-04-02 07:07:59,758 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-04-02 07:07:59,758 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-04-02 07:07:59,758 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-02 07:07:59,759 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-04-02 07:07:59,759 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2023-04-02 07:07:59,759 INFO L87 Difference]: Start difference. First operand 185 states and 263 transitions. Second operand has 7 states, 7 states have (on average 6.714285714285714) internal successors, (47), 6 states have internal predecessors, (47), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-02 07:08:02,043 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-04-02 07:08:04,048 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-04-02 07:08:06,056 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-04-02 07:08:08,062 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-04-02 07:08:10,242 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-04-02 07:08:10,980 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-02 07:08:10,980 INFO L93 Difference]: Finished difference Result 375 states and 541 transitions. [2023-04-02 07:08:10,980 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-04-02 07:08:10,980 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 6.714285714285714) internal successors, (47), 6 states have internal predecessors, (47), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 43 [2023-04-02 07:08:10,981 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-02 07:08:10,984 INFO L225 Difference]: With dead ends: 375 [2023-04-02 07:08:10,984 INFO L226 Difference]: Without dead ends: 197 [2023-04-02 07:08:10,985 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 94 GetRequests, 85 SyntacticMatches, 1 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=36, Invalid=54, Unknown=0, NotChecked=0, Total=90 [2023-04-02 07:08:10,986 INFO L413 NwaCegarLoop]: 217 mSDtfsCounter, 48 mSDsluCounter, 396 mSDsCounter, 0 mSdLazyCounter, 390 mSolverCounterSat, 48 mSolverCounterUnsat, 5 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 10.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 48 SdHoareTripleChecker+Valid, 613 SdHoareTripleChecker+Invalid, 443 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 48 IncrementalHoareTripleChecker+Valid, 390 IncrementalHoareTripleChecker+Invalid, 5 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 10.9s IncrementalHoareTripleChecker+Time [2023-04-02 07:08:10,987 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [48 Valid, 613 Invalid, 443 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [48 Valid, 390 Invalid, 5 Unknown, 0 Unchecked, 10.9s Time] [2023-04-02 07:08:10,989 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 197 states. [2023-04-02 07:08:11,007 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 197 to 189. [2023-04-02 07:08:11,007 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 189 states, 129 states have (on average 1.3410852713178294) internal successors, (173), 129 states have internal predecessors, (173), 48 states have call successors, (48), 13 states have call predecessors, (48), 11 states have return successors, (46), 46 states have call predecessors, (46), 46 states have call successors, (46) [2023-04-02 07:08:11,008 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 189 states to 189 states and 267 transitions. [2023-04-02 07:08:11,009 INFO L78 Accepts]: Start accepts. Automaton has 189 states and 267 transitions. Word has length 43 [2023-04-02 07:08:11,009 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-02 07:08:11,009 INFO L495 AbstractCegarLoop]: Abstraction has 189 states and 267 transitions. [2023-04-02 07:08:11,009 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 6.714285714285714) internal successors, (47), 6 states have internal predecessors, (47), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-02 07:08:11,009 INFO L276 IsEmpty]: Start isEmpty. Operand 189 states and 267 transitions. [2023-04-02 07:08:11,009 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2023-04-02 07:08:11,010 INFO L187 NwaCegarLoop]: Found error trace [2023-04-02 07:08:11,010 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 07:08:11,022 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-04-02 07:08:11,222 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-02 07:08:11,223 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-02 07:08:11,223 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-02 07:08:11,223 INFO L85 PathProgramCache]: Analyzing trace with hash 1142909695, now seen corresponding path program 2 times [2023-04-02 07:08:11,223 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-02 07:08:11,223 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2076183109] [2023-04-02 07:08:11,224 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 07:08:11,224 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-02 07:08:11,362 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 07:08:11,656 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-02 07:08:11,660 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 07:08:11,668 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2023-04-02 07:08:11,668 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-02 07:08:11,668 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2076183109] [2023-04-02 07:08:11,668 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2076183109] provided 0 perfect and 1 imperfect interpolant sequences [2023-04-02 07:08:11,669 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1262284610] [2023-04-02 07:08:11,669 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-04-02 07:08:11,669 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-02 07:08:11,669 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-04-02 07:08:11,670 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 07:08:11,673 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 07:08:12,953 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2023-04-02 07:08:12,954 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-04-02 07:08:12,963 INFO L262 TraceCheckSpWp]: Trace formula consists of 1744 conjuncts, 7 conjunts are in the unsatisfiable core [2023-04-02 07:08:12,967 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-04-02 07:08:12,981 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2023-04-02 07:08:12,982 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-04-02 07:08:12,982 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1262284610] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-02 07:08:12,982 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-04-02 07:08:12,982 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [5] total 6 [2023-04-02 07:08:12,982 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1856738312] [2023-04-02 07:08:12,982 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-02 07:08:12,982 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-04-02 07:08:12,982 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-02 07:08:12,983 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-04-02 07:08:12,983 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-04-02 07:08:12,983 INFO L87 Difference]: Start difference. First operand 189 states and 267 transitions. Second operand has 3 states, 3 states have (on average 13.0) internal successors, (39), 3 states have internal predecessors, (39), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-02 07:08:12,999 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-02 07:08:13,000 INFO L93 Difference]: Finished difference Result 356 states and 507 transitions. [2023-04-02 07:08:13,000 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-04-02 07:08:13,000 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 13.0) internal successors, (39), 3 states have internal predecessors, (39), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 47 [2023-04-02 07:08:13,000 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-02 07:08:13,001 INFO L225 Difference]: With dead ends: 356 [2023-04-02 07:08:13,001 INFO L226 Difference]: Without dead ends: 189 [2023-04-02 07:08:13,002 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 52 GetRequests, 48 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-04-02 07:08:13,002 INFO L413 NwaCegarLoop]: 259 mSDtfsCounter, 0 mSDsluCounter, 258 mSDsCounter, 0 mSdLazyCounter, 2 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 517 SdHoareTripleChecker+Invalid, 2 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 2 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-04-02 07:08:13,003 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 517 Invalid, 2 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 2 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-04-02 07:08:13,003 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 189 states. [2023-04-02 07:08:13,015 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 189 to 189. [2023-04-02 07:08:13,016 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 189 states, 129 states have (on average 1.3333333333333333) internal successors, (172), 129 states have internal predecessors, (172), 48 states have call successors, (48), 13 states have call predecessors, (48), 11 states have return successors, (46), 46 states have call predecessors, (46), 46 states have call successors, (46) [2023-04-02 07:08:13,017 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 189 states to 189 states and 266 transitions. [2023-04-02 07:08:13,017 INFO L78 Accepts]: Start accepts. Automaton has 189 states and 266 transitions. Word has length 47 [2023-04-02 07:08:13,017 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-02 07:08:13,017 INFO L495 AbstractCegarLoop]: Abstraction has 189 states and 266 transitions. [2023-04-02 07:08:13,017 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 13.0) internal successors, (39), 3 states have internal predecessors, (39), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-02 07:08:13,017 INFO L276 IsEmpty]: Start isEmpty. Operand 189 states and 266 transitions. [2023-04-02 07:08:13,018 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2023-04-02 07:08:13,018 INFO L187 NwaCegarLoop]: Found error trace [2023-04-02 07:08:13,018 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 07:08:13,028 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2023-04-02 07:08:13,228 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-02 07:08:13,228 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-02 07:08:13,229 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-02 07:08:13,229 INFO L85 PathProgramCache]: Analyzing trace with hash -1744429293, now seen corresponding path program 1 times [2023-04-02 07:08:13,229 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-02 07:08:13,229 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [581270800] [2023-04-02 07:08:13,229 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 07:08:13,229 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-02 07:08:13,346 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 07:08:13,643 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-02 07:08:13,647 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 07:08:13,676 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2023-04-02 07:08:13,680 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 07:08:13,685 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-04-02 07:08:13,688 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 07:08:13,700 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-04-02 07:08:13,702 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 07:08:13,707 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2023-04-02 07:08:13,707 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-02 07:08:13,707 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [581270800] [2023-04-02 07:08:13,707 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [581270800] provided 0 perfect and 1 imperfect interpolant sequences [2023-04-02 07:08:13,707 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1451605572] [2023-04-02 07:08:13,707 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 07:08:13,707 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-02 07:08:13,708 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-04-02 07:08:13,723 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 07:08:13,724 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 07:08:14,531 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 07:08:14,541 INFO L262 TraceCheckSpWp]: Trace formula consists of 2094 conjuncts, 3 conjunts are in the unsatisfiable core [2023-04-02 07:08:14,557 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-04-02 07:08:14,592 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2023-04-02 07:08:14,592 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-04-02 07:08:14,660 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2023-04-02 07:08:14,660 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1451605572] provided 0 perfect and 2 imperfect interpolant sequences [2023-04-02 07:08:14,660 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-04-02 07:08:14,660 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 4, 4] total 8 [2023-04-02 07:08:14,661 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [677780698] [2023-04-02 07:08:14,661 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-04-02 07:08:14,661 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-04-02 07:08:14,661 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-02 07:08:14,662 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-04-02 07:08:14,676 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2023-04-02 07:08:14,678 INFO L87 Difference]: Start difference. First operand 189 states and 266 transitions. Second operand has 8 states, 8 states have (on average 9.5) internal successors, (76), 5 states have internal predecessors, (76), 2 states have call successors, (13), 5 states have call predecessors, (13), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2023-04-02 07:08:17,001 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-04-02 07:08:18,397 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.39s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-04-02 07:08:20,411 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-04-02 07:08:22,420 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-04-02 07:08:24,430 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-04-02 07:08:26,442 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-04-02 07:08:28,449 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-04-02 07:08:28,814 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-02 07:08:28,814 INFO L93 Difference]: Finished difference Result 379 states and 541 transitions. [2023-04-02 07:08:28,814 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-04-02 07:08:28,814 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 9.5) internal successors, (76), 5 states have internal predecessors, (76), 2 states have call successors, (13), 5 states have call predecessors, (13), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) Word has length 67 [2023-04-02 07:08:28,814 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-02 07:08:28,815 INFO L225 Difference]: With dead ends: 379 [2023-04-02 07:08:28,816 INFO L226 Difference]: Without dead ends: 207 [2023-04-02 07:08:28,816 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 149 GetRequests, 138 SyntacticMatches, 2 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2023-04-02 07:08:28,817 INFO L413 NwaCegarLoop]: 216 mSDtfsCounter, 131 mSDsluCounter, 482 mSDsCounter, 0 mSdLazyCounter, 318 mSolverCounterSat, 140 mSolverCounterUnsat, 6 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 13.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 131 SdHoareTripleChecker+Valid, 698 SdHoareTripleChecker+Invalid, 464 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 140 IncrementalHoareTripleChecker+Valid, 318 IncrementalHoareTripleChecker+Invalid, 6 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 13.9s IncrementalHoareTripleChecker+Time [2023-04-02 07:08:28,817 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [131 Valid, 698 Invalid, 464 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [140 Valid, 318 Invalid, 6 Unknown, 0 Unchecked, 13.9s Time] [2023-04-02 07:08:28,817 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 207 states. [2023-04-02 07:08:28,831 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 207 to 199. [2023-04-02 07:08:28,831 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 199 states, 139 states have (on average 1.316546762589928) internal successors, (183), 139 states have internal predecessors, (183), 48 states have call successors, (48), 13 states have call predecessors, (48), 11 states have return successors, (46), 46 states have call predecessors, (46), 46 states have call successors, (46) [2023-04-02 07:08:28,832 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 199 states to 199 states and 277 transitions. [2023-04-02 07:08:28,833 INFO L78 Accepts]: Start accepts. Automaton has 199 states and 277 transitions. Word has length 67 [2023-04-02 07:08:28,833 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-02 07:08:28,833 INFO L495 AbstractCegarLoop]: Abstraction has 199 states and 277 transitions. [2023-04-02 07:08:28,833 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 9.5) internal successors, (76), 5 states have internal predecessors, (76), 2 states have call successors, (13), 5 states have call predecessors, (13), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2023-04-02 07:08:28,833 INFO L276 IsEmpty]: Start isEmpty. Operand 199 states and 277 transitions. [2023-04-02 07:08:28,834 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2023-04-02 07:08:28,834 INFO L187 NwaCegarLoop]: Found error trace [2023-04-02 07:08:28,834 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 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] [2023-04-02 07:08:28,847 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2023-04-02 07:08:29,043 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-02 07:08:29,043 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-02 07:08:29,044 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-02 07:08:29,044 INFO L85 PathProgramCache]: Analyzing trace with hash -626924975, now seen corresponding path program 2 times [2023-04-02 07:08:29,044 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-02 07:08:29,044 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [221116241] [2023-04-02 07:08:29,044 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 07:08:29,044 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-02 07:08:29,236 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 07:08:29,981 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-02 07:08:29,987 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 07:08:30,014 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2023-04-02 07:08:30,021 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 07:08:30,073 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-04-02 07:08:30,079 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 07:08:30,103 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-04-02 07:08:30,105 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 07:08:30,108 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 48 trivial. 0 not checked. [2023-04-02 07:08:30,108 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-02 07:08:30,108 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [221116241] [2023-04-02 07:08:30,108 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [221116241] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-02 07:08:30,108 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-02 07:08:30,108 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2023-04-02 07:08:30,108 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [668024333] [2023-04-02 07:08:30,108 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-02 07:08:30,109 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-04-02 07:08:30,109 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-02 07:08:30,109 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-04-02 07:08:30,110 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2023-04-02 07:08:30,110 INFO L87 Difference]: Start difference. First operand 199 states and 277 transitions. Second operand has 10 states, 10 states have (on average 5.3) internal successors, (53), 6 states have internal predecessors, (53), 3 states have call successors, (6), 5 states have call predecessors, (6), 4 states have return successors, (4), 3 states have call predecessors, (4), 3 states have call successors, (4) [2023-04-02 07:08:32,411 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-04-02 07:08:34,417 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-04-02 07:08:36,425 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-04-02 07:08:38,443 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-04-02 07:08:40,448 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-04-02 07:08:42,457 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-04-02 07:08:44,125 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-02 07:08:44,125 INFO L93 Difference]: Finished difference Result 436 states and 652 transitions. [2023-04-02 07:08:44,125 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2023-04-02 07:08:44,125 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 5.3) internal successors, (53), 6 states have internal predecessors, (53), 3 states have call successors, (6), 5 states have call predecessors, (6), 4 states have return successors, (4), 3 states have call predecessors, (4), 3 states have call successors, (4) Word has length 77 [2023-04-02 07:08:44,126 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-02 07:08:44,131 INFO L225 Difference]: With dead ends: 436 [2023-04-02 07:08:44,131 INFO L226 Difference]: Without dead ends: 409 [2023-04-02 07:08:44,131 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 29 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=108, Invalid=198, Unknown=0, NotChecked=0, Total=306 [2023-04-02 07:08:44,132 INFO L413 NwaCegarLoop]: 240 mSDtfsCounter, 620 mSDsluCounter, 729 mSDsCounter, 0 mSdLazyCounter, 1171 mSolverCounterSat, 383 mSolverCounterUnsat, 6 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 13.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 652 SdHoareTripleChecker+Valid, 969 SdHoareTripleChecker+Invalid, 1560 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 383 IncrementalHoareTripleChecker+Valid, 1171 IncrementalHoareTripleChecker+Invalid, 6 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 13.5s IncrementalHoareTripleChecker+Time [2023-04-02 07:08:44,132 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [652 Valid, 969 Invalid, 1560 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [383 Valid, 1171 Invalid, 6 Unknown, 0 Unchecked, 13.5s Time] [2023-04-02 07:08:44,133 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 409 states. [2023-04-02 07:08:44,186 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 409 to 395. [2023-04-02 07:08:44,187 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 395 states, 258 states have (on average 1.375968992248062) internal successors, (355), 258 states have internal predecessors, (355), 109 states have call successors, (109), 23 states have call predecessors, (109), 27 states have return successors, (132), 113 states have call predecessors, (132), 107 states have call successors, (132) [2023-04-02 07:08:44,190 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 395 states to 395 states and 596 transitions. [2023-04-02 07:08:44,190 INFO L78 Accepts]: Start accepts. Automaton has 395 states and 596 transitions. Word has length 77 [2023-04-02 07:08:44,191 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-02 07:08:44,191 INFO L495 AbstractCegarLoop]: Abstraction has 395 states and 596 transitions. [2023-04-02 07:08:44,191 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 5.3) internal successors, (53), 6 states have internal predecessors, (53), 3 states have call successors, (6), 5 states have call predecessors, (6), 4 states have return successors, (4), 3 states have call predecessors, (4), 3 states have call successors, (4) [2023-04-02 07:08:44,191 INFO L276 IsEmpty]: Start isEmpty. Operand 395 states and 596 transitions. [2023-04-02 07:08:44,195 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 132 [2023-04-02 07:08:44,195 INFO L187 NwaCegarLoop]: Found error trace [2023-04-02 07:08:44,195 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 5, 5, 5, 5, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-02 07:08:44,195 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-04-02 07:08:44,195 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-02 07:08:44,196 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-02 07:08:44,196 INFO L85 PathProgramCache]: Analyzing trace with hash -1723210324, now seen corresponding path program 1 times [2023-04-02 07:08:44,196 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-02 07:08:44,196 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2117921936] [2023-04-02 07:08:44,196 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 07:08:44,196 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-02 07:08:44,382 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 07:08:45,293 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-02 07:08:45,300 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 07:08:45,332 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2023-04-02 07:08:45,347 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 07:08:45,372 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-04-02 07:08:45,376 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 07:08:45,399 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-04-02 07:08:45,401 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 07:08:45,405 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2023-04-02 07:08:45,416 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 07:08:45,468 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-04-02 07:08:45,476 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 07:08:45,488 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-04-02 07:08:45,490 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 07:08:45,501 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-04-02 07:08:45,503 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 07:08:45,505 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-04-02 07:08:45,506 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 07:08:45,510 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2023-04-02 07:08:45,511 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 07:08:45,527 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2023-04-02 07:08:45,529 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 07:08:45,530 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2023-04-02 07:08:45,531 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 07:08:45,534 INFO L134 CoverageAnalysis]: Checked inductivity of 103 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 99 trivial. 0 not checked. [2023-04-02 07:08:45,534 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-02 07:08:45,534 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2117921936] [2023-04-02 07:08:45,534 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2117921936] provided 0 perfect and 1 imperfect interpolant sequences [2023-04-02 07:08:45,534 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [275199317] [2023-04-02 07:08:45,534 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 07:08:45,534 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-02 07:08:45,534 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-04-02 07:08:45,535 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 07:08:45,564 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 07:08:46,463 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 07:08:46,475 INFO L262 TraceCheckSpWp]: Trace formula consists of 2548 conjuncts, 14 conjunts are in the unsatisfiable core [2023-04-02 07:08:46,479 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-04-02 07:08:46,505 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 16 [2023-04-02 07:08:46,550 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 14 [2023-04-02 07:08:46,622 INFO L134 CoverageAnalysis]: Checked inductivity of 103 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 98 trivial. 0 not checked. [2023-04-02 07:08:46,622 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-04-02 07:08:46,657 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 8 [2023-04-02 07:08:46,784 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2023-04-02 07:08:46,840 INFO L134 CoverageAnalysis]: Checked inductivity of 103 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 98 trivial. 0 not checked. [2023-04-02 07:08:46,840 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [275199317] provided 0 perfect and 2 imperfect interpolant sequences [2023-04-02 07:08:46,840 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-04-02 07:08:46,841 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 5, 5] total 16 [2023-04-02 07:08:46,841 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [53584614] [2023-04-02 07:08:46,841 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-04-02 07:08:46,842 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2023-04-02 07:08:46,842 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-02 07:08:46,842 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2023-04-02 07:08:46,842 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=48, Invalid=192, Unknown=0, NotChecked=0, Total=240 [2023-04-02 07:08:46,842 INFO L87 Difference]: Start difference. First operand 395 states and 596 transitions. Second operand has 16 states, 16 states have (on average 8.5) internal successors, (136), 10 states have internal predecessors, (136), 10 states have call successors, (32), 13 states have call predecessors, (32), 9 states have return successors, (23), 10 states have call predecessors, (23), 9 states have call successors, (23) [2023-04-02 07:08:49,282 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-04-02 07:08:51,287 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-04-02 07:08:53,291 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-04-02 07:08:55,297 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-04-02 07:08:57,547 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-04-02 07:08:59,556 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-04-02 07:09:01,561 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-04-02 07:09:03,565 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-04-02 07:09:05,569 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-04-02 07:09:07,749 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-02 07:09:07,749 INFO L93 Difference]: Finished difference Result 917 states and 1437 transitions. [2023-04-02 07:09:07,749 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2023-04-02 07:09:07,749 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 8.5) internal successors, (136), 10 states have internal predecessors, (136), 10 states have call successors, (32), 13 states have call predecessors, (32), 9 states have return successors, (23), 10 states have call predecessors, (23), 9 states have call successors, (23) Word has length 131 [2023-04-02 07:09:07,750 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-02 07:09:07,754 INFO L225 Difference]: With dead ends: 917 [2023-04-02 07:09:07,754 INFO L226 Difference]: Without dead ends: 890 [2023-04-02 07:09:07,755 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 314 GetRequests, 284 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 170 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=284, Invalid=708, Unknown=0, NotChecked=0, Total=992 [2023-04-02 07:09:07,755 INFO L413 NwaCegarLoop]: 140 mSDtfsCounter, 874 mSDsluCounter, 901 mSDsCounter, 0 mSdLazyCounter, 1816 mSolverCounterSat, 664 mSolverCounterUnsat, 9 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 19.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 874 SdHoareTripleChecker+Valid, 1041 SdHoareTripleChecker+Invalid, 2489 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 664 IncrementalHoareTripleChecker+Valid, 1816 IncrementalHoareTripleChecker+Invalid, 9 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 19.9s IncrementalHoareTripleChecker+Time [2023-04-02 07:09:07,755 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [874 Valid, 1041 Invalid, 2489 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [664 Valid, 1816 Invalid, 9 Unknown, 0 Unchecked, 19.9s Time] [2023-04-02 07:09:07,757 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 890 states. [2023-04-02 07:09:07,826 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 890 to 817. [2023-04-02 07:09:07,828 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 817 states, 516 states have (on average 1.4108527131782946) internal successors, (728), 520 states have internal predecessors, (728), 237 states have call successors, (237), 43 states have call predecessors, (237), 63 states have return successors, (324), 253 states have call predecessors, (324), 235 states have call successors, (324) [2023-04-02 07:09:07,833 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 817 states to 817 states and 1289 transitions. [2023-04-02 07:09:07,833 INFO L78 Accepts]: Start accepts. Automaton has 817 states and 1289 transitions. Word has length 131 [2023-04-02 07:09:07,835 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-02 07:09:07,836 INFO L495 AbstractCegarLoop]: Abstraction has 817 states and 1289 transitions. [2023-04-02 07:09:07,836 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 8.5) internal successors, (136), 10 states have internal predecessors, (136), 10 states have call successors, (32), 13 states have call predecessors, (32), 9 states have return successors, (23), 10 states have call predecessors, (23), 9 states have call successors, (23) [2023-04-02 07:09:07,836 INFO L276 IsEmpty]: Start isEmpty. Operand 817 states and 1289 transitions. [2023-04-02 07:09:07,838 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 132 [2023-04-02 07:09:07,839 INFO L187 NwaCegarLoop]: Found error trace [2023-04-02 07:09:07,839 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 5, 5, 5, 5, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-02 07:09:07,853 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 07:09:08,045 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-02 07:09:08,045 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-02 07:09:08,045 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-02 07:09:08,045 INFO L85 PathProgramCache]: Analyzing trace with hash 688071250, now seen corresponding path program 1 times [2023-04-02 07:09:08,046 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-02 07:09:08,046 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [371266676] [2023-04-02 07:09:08,046 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 07:09:08,046 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-02 07:09:14,673 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 07:10:40,522 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-02 07:10:40,529 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 07:10:40,643 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2023-04-02 07:10:40,647 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 07:10:40,685 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-04-02 07:10:40,688 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 07:10:40,705 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-04-02 07:10:40,707 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 07:10:40,709 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2023-04-02 07:10:40,719 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 07:10:40,741 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-04-02 07:10:40,745 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 07:10:40,751 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-04-02 07:10:40,753 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 07:10:40,767 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-04-02 07:10:40,769 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 07:10:40,770 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-04-02 07:10:40,771 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 07:10:40,773 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2023-04-02 07:10:40,775 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 07:10:40,791 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2023-04-02 07:10:40,793 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 07:10:40,794 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2023-04-02 07:10:40,795 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 07:10:40,798 INFO L134 CoverageAnalysis]: Checked inductivity of 103 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 99 trivial. 0 not checked. [2023-04-02 07:10:40,798 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-02 07:10:40,799 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [371266676] [2023-04-02 07:10:40,799 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [371266676] provided 0 perfect and 1 imperfect interpolant sequences [2023-04-02 07:10:40,799 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1027839695] [2023-04-02 07:10:40,799 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 07:10:40,799 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-02 07:10:40,799 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-04-02 07:10:40,801 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 07:10:40,805 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 07:10:41,810 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 07:10:41,822 INFO L262 TraceCheckSpWp]: Trace formula consists of 2545 conjuncts, 19 conjunts are in the unsatisfiable core [2023-04-02 07:10:41,827 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-04-02 07:10:41,998 INFO L134 CoverageAnalysis]: Checked inductivity of 103 backedges. 43 proven. 0 refuted. 0 times theorem prover too weak. 60 trivial. 0 not checked. [2023-04-02 07:10:41,998 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-04-02 07:10:41,999 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1027839695] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-02 07:10:41,999 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-04-02 07:10:41,999 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [15] total 20 [2023-04-02 07:10:41,999 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1885321537] [2023-04-02 07:10:41,999 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-02 07:10:41,999 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-04-02 07:10:41,999 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-02 07:10:42,000 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-04-02 07:10:42,000 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=59, Invalid=321, Unknown=0, NotChecked=0, Total=380 [2023-04-02 07:10:42,000 INFO L87 Difference]: Start difference. First operand 817 states and 1289 transitions. Second operand has 7 states, 7 states have (on average 11.714285714285714) internal successors, (82), 6 states have internal predecessors, (82), 4 states have call successors, (14), 4 states have call predecessors, (14), 4 states have return successors, (12), 3 states have call predecessors, (12), 4 states have call successors, (12) [2023-04-02 07:10:42,785 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-02 07:10:42,786 INFO L93 Difference]: Finished difference Result 1951 states and 3098 transitions. [2023-04-02 07:10:42,786 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-04-02 07:10:42,786 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 11.714285714285714) internal successors, (82), 6 states have internal predecessors, (82), 4 states have call successors, (14), 4 states have call predecessors, (14), 4 states have return successors, (12), 3 states have call predecessors, (12), 4 states have call successors, (12) Word has length 131 [2023-04-02 07:10:42,787 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-02 07:10:42,791 INFO L225 Difference]: With dead ends: 1951 [2023-04-02 07:10:42,791 INFO L226 Difference]: Without dead ends: 1164 [2023-04-02 07:10:42,795 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 177 GetRequests, 156 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 101 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=76, Invalid=430, Unknown=0, NotChecked=0, Total=506 [2023-04-02 07:10:42,796 INFO L413 NwaCegarLoop]: 265 mSDtfsCounter, 358 mSDsluCounter, 466 mSDsCounter, 0 mSdLazyCounter, 860 mSolverCounterSat, 144 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 380 SdHoareTripleChecker+Valid, 731 SdHoareTripleChecker+Invalid, 1004 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 144 IncrementalHoareTripleChecker+Valid, 860 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2023-04-02 07:10:42,796 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [380 Valid, 731 Invalid, 1004 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [144 Valid, 860 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2023-04-02 07:10:42,798 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1164 states. [2023-04-02 07:10:42,868 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1164 to 1108. [2023-04-02 07:10:42,870 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1108 states, 722 states have (on average 1.3102493074792243) internal successors, (946), 701 states have internal predecessors, (946), 272 states have call successors, (272), 53 states have call predecessors, (272), 113 states have return successors, (459), 353 states have call predecessors, (459), 270 states have call successors, (459) [2023-04-02 07:10:42,875 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1108 states to 1108 states and 1677 transitions. [2023-04-02 07:10:42,875 INFO L78 Accepts]: Start accepts. Automaton has 1108 states and 1677 transitions. Word has length 131 [2023-04-02 07:10:42,875 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-02 07:10:42,875 INFO L495 AbstractCegarLoop]: Abstraction has 1108 states and 1677 transitions. [2023-04-02 07:10:42,876 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 11.714285714285714) internal successors, (82), 6 states have internal predecessors, (82), 4 states have call successors, (14), 4 states have call predecessors, (14), 4 states have return successors, (12), 3 states have call predecessors, (12), 4 states have call successors, (12) [2023-04-02 07:10:42,876 INFO L276 IsEmpty]: Start isEmpty. Operand 1108 states and 1677 transitions. [2023-04-02 07:10:42,878 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 133 [2023-04-02 07:10:42,878 INFO L187 NwaCegarLoop]: Found error trace [2023-04-02 07:10:42,878 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 5, 5, 5, 5, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-02 07:10:42,904 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 07:10:43,093 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-02 07:10:43,093 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-02 07:10:43,093 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-02 07:10:43,093 INFO L85 PathProgramCache]: Analyzing trace with hash -1829845829, now seen corresponding path program 1 times [2023-04-02 07:10:43,094 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-02 07:10:43,094 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [299084434] [2023-04-02 07:10:43,094 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 07:10:43,094 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-02 07:10:52,820 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat