/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -s ../../../trunk/examples/settings/default/automizer/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf -i ../sv-benchmarks/c/seq-pthread/cs_dekker.i -------------------------------------------------------------------------------- This is Ultimate 0.2.2-dev-05d3305-m [2022-10-15 17:47:26,332 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-10-15 17:47:26,336 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-10-15 17:47:26,377 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-10-15 17:47:26,378 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-10-15 17:47:26,380 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-10-15 17:47:26,382 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-10-15 17:47:26,395 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-10-15 17:47:26,398 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-10-15 17:47:26,399 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-10-15 17:47:26,401 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-10-15 17:47:26,402 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-10-15 17:47:26,403 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-10-15 17:47:26,404 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-10-15 17:47:26,406 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-10-15 17:47:26,407 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-10-15 17:47:26,408 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-10-15 17:47:26,409 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-10-15 17:47:26,412 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-10-15 17:47:26,414 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-10-15 17:47:26,416 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-10-15 17:47:26,418 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-10-15 17:47:26,419 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-10-15 17:47:26,420 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-10-15 17:47:26,428 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2022-10-15 17:47:26,432 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-10-15 17:47:26,433 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-10-15 17:47:26,434 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-10-15 17:47:26,436 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-10-15 17:47:26,437 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-10-15 17:47:26,437 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-10-15 17:47:26,438 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-10-15 17:47:26,438 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-10-15 17:47:26,439 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-10-15 17:47:26,440 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-10-15 17:47:26,441 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-10-15 17:47:26,448 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2022-10-15 17:47:26,476 INFO L113 SettingsManager]: Loading preferences was successful [2022-10-15 17:47:26,477 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-10-15 17:47:26,477 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-10-15 17:47:26,477 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-10-15 17:47:26,478 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-10-15 17:47:26,479 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-10-15 17:47:26,479 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-10-15 17:47:26,480 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-10-15 17:47:26,480 INFO L138 SettingsManager]: * Use SBE=true [2022-10-15 17:47:26,480 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-10-15 17:47:26,480 INFO L138 SettingsManager]: * sizeof long=4 [2022-10-15 17:47:26,480 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-10-15 17:47:26,481 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-10-15 17:47:26,481 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-10-15 17:47:26,481 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-10-15 17:47:26,481 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2022-10-15 17:47:26,481 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2022-10-15 17:47:26,481 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2022-10-15 17:47:26,482 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-10-15 17:47:26,482 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2022-10-15 17:47:26,482 INFO L138 SettingsManager]: * sizeof long double=12 [2022-10-15 17:47:26,482 INFO L138 SettingsManager]: * Use constant arrays=true [2022-10-15 17:47:26,483 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-10-15 17:47:26,483 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-10-15 17:47:26,483 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-10-15 17:47:26,483 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-10-15 17:47:26,483 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-10-15 17:47:26,484 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-10-15 17:47:26,484 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-10-15 17:47:26,484 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-10-15 17:47:26,484 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2022-10-15 17:47:26,866 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-10-15 17:47:26,891 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-10-15 17:47:26,894 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-10-15 17:47:26,896 INFO L271 PluginConnector]: Initializing CDTParser... [2022-10-15 17:47:26,897 INFO L275 PluginConnector]: CDTParser initialized [2022-10-15 17:47:26,899 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/seq-pthread/cs_dekker.i [2022-10-15 17:47:26,985 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/48090c834/e6c80421a24a44fc8933b94faa4fe498/FLAG35bc8f57a [2022-10-15 17:47:27,824 INFO L306 CDTParser]: Found 1 translation units. [2022-10-15 17:47:27,825 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/seq-pthread/cs_dekker.i [2022-10-15 17:47:27,843 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/48090c834/e6c80421a24a44fc8933b94faa4fe498/FLAG35bc8f57a [2022-10-15 17:47:27,871 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/48090c834/e6c80421a24a44fc8933b94faa4fe498 [2022-10-15 17:47:27,874 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-10-15 17:47:27,880 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2022-10-15 17:47:27,883 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-10-15 17:47:27,883 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-10-15 17:47:27,888 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-10-15 17:47:27,888 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.10 05:47:27" (1/1) ... [2022-10-15 17:47:27,890 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@22e3a979 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 05:47:27, skipping insertion in model container [2022-10-15 17:47:27,891 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.10 05:47:27" (1/1) ... [2022-10-15 17:47:27,899 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-10-15 17:47:27,988 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-10-15 17:47:28,304 WARN L230 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_dekker.i[23603,23616] [2022-10-15 17:47:28,482 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-10-15 17:47:28,498 INFO L203 MainTranslator]: Completed pre-run [2022-10-15 17:47:28,535 WARN L230 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_dekker.i[23603,23616] [2022-10-15 17:47:28,612 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-10-15 17:47:28,662 INFO L208 MainTranslator]: Completed translation [2022-10-15 17:47:28,663 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 05:47:28 WrapperNode [2022-10-15 17:47:28,663 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-10-15 17:47:28,664 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-10-15 17:47:28,664 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-10-15 17:47:28,665 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-10-15 17:47:28,674 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 05:47:28" (1/1) ... [2022-10-15 17:47:28,722 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 05:47:28" (1/1) ... [2022-10-15 17:47:28,783 INFO L138 Inliner]: procedures = 145, calls = 300, calls flagged for inlining = 5, calls inlined = 5, statements flattened = 452 [2022-10-15 17:47:28,783 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-10-15 17:47:28,784 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-10-15 17:47:28,784 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-10-15 17:47:28,784 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-10-15 17:47:28,796 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 05:47:28" (1/1) ... [2022-10-15 17:47:28,796 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 05:47:28" (1/1) ... [2022-10-15 17:47:28,804 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 05:47:28" (1/1) ... [2022-10-15 17:47:28,805 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 05:47:28" (1/1) ... [2022-10-15 17:47:28,830 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 05:47:28" (1/1) ... [2022-10-15 17:47:28,836 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 05:47:28" (1/1) ... [2022-10-15 17:47:28,840 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 05:47:28" (1/1) ... [2022-10-15 17:47:28,843 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 05:47:28" (1/1) ... [2022-10-15 17:47:28,850 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-10-15 17:47:28,851 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-10-15 17:47:28,851 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-10-15 17:47:28,851 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-10-15 17:47:28,852 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 05:47:28" (1/1) ... [2022-10-15 17:47:28,860 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-10-15 17:47:28,877 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-10-15 17:47:28,895 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) [2022-10-15 17:47:28,907 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 [2022-10-15 17:47:28,963 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-10-15 17:47:28,964 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-10-15 17:47:28,964 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2022-10-15 17:47:28,964 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2022-10-15 17:47:28,964 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-10-15 17:47:28,964 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-10-15 17:47:28,964 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2022-10-15 17:47:28,964 INFO L130 BoogieDeclarations]: Found specification of procedure __CS_pthread_create [2022-10-15 17:47:28,965 INFO L138 BoogieDeclarations]: Found implementation of procedure __CS_pthread_create [2022-10-15 17:47:28,965 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2022-10-15 17:47:28,965 INFO L130 BoogieDeclarations]: Found specification of procedure __CS_pthread_join [2022-10-15 17:47:28,965 INFO L138 BoogieDeclarations]: Found implementation of procedure __CS_pthread_join [2022-10-15 17:47:28,965 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~TO~$Pointer$ [2022-10-15 17:47:28,965 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~TO~$Pointer$ [2022-10-15 17:47:28,965 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-10-15 17:47:28,966 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2022-10-15 17:47:28,966 INFO L130 BoogieDeclarations]: Found specification of procedure __CS_cs [2022-10-15 17:47:28,966 INFO L138 BoogieDeclarations]: Found implementation of procedure __CS_cs [2022-10-15 17:47:28,966 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-10-15 17:47:28,966 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-10-15 17:47:28,966 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-10-15 17:47:29,247 INFO L235 CfgBuilder]: Building ICFG [2022-10-15 17:47:29,251 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-10-15 17:47:30,747 INFO L276 CfgBuilder]: Performing block encoding [2022-10-15 17:47:30,771 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-10-15 17:47:30,771 INFO L300 CfgBuilder]: Removed 2 assume(true) statements. [2022-10-15 17:47:30,776 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.10 05:47:30 BoogieIcfgContainer [2022-10-15 17:47:30,776 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-10-15 17:47:30,780 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-10-15 17:47:30,780 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-10-15 17:47:30,785 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-10-15 17:47:30,785 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 15.10 05:47:27" (1/3) ... [2022-10-15 17:47:30,786 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5133ba and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.10 05:47:30, skipping insertion in model container [2022-10-15 17:47:30,787 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 05:47:28" (2/3) ... [2022-10-15 17:47:30,787 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5133ba and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.10 05:47:30, skipping insertion in model container [2022-10-15 17:47:30,787 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.10 05:47:30" (3/3) ... [2022-10-15 17:47:30,789 INFO L112 eAbstractionObserver]: Analyzing ICFG cs_dekker.i [2022-10-15 17:47:30,811 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-10-15 17:47:30,812 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 227 error locations. [2022-10-15 17:47:30,886 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-10-15 17:47:30,897 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=false, mAutomataTypeConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=All, 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;@15e33aa6, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-10-15 17:47:30,897 INFO L358 AbstractCegarLoop]: Starting to check reachability of 227 error locations. [2022-10-15 17:47:30,919 INFO L276 IsEmpty]: Start isEmpty. Operand has 492 states, 224 states have (on average 2.1294642857142856) internal successors, (477), 451 states have internal predecessors, (477), 35 states have call successors, (35), 5 states have call predecessors, (35), 5 states have return successors, (35), 35 states have call predecessors, (35), 35 states have call successors, (35) [2022-10-15 17:47:30,933 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2022-10-15 17:47:30,933 INFO L187 NwaCegarLoop]: Found error trace [2022-10-15 17:47:30,934 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1] [2022-10-15 17:47:30,938 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr12REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [__CS_pthread_joinErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, __CS_pthread_joinErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, __CS_pthread_joinErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 224 more)] === [2022-10-15 17:47:30,943 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-15 17:47:30,944 INFO L85 PathProgramCache]: Analyzing trace with hash 5266288, now seen corresponding path program 1 times [2022-10-15 17:47:30,954 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-15 17:47:30,954 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1799512314] [2022-10-15 17:47:30,954 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-15 17:47:30,955 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-15 17:47:31,303 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 17:47:31,605 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-15 17:47:31,606 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-15 17:47:31,606 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1799512314] [2022-10-15 17:47:31,611 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1799512314] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-15 17:47:31,611 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-15 17:47:31,611 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-10-15 17:47:31,618 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1017480544] [2022-10-15 17:47:31,623 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-15 17:47:31,634 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-10-15 17:47:31,635 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-15 17:47:31,692 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-10-15 17:47:31,693 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-10-15 17:47:31,698 INFO L87 Difference]: Start difference. First operand has 492 states, 224 states have (on average 2.1294642857142856) internal successors, (477), 451 states have internal predecessors, (477), 35 states have call successors, (35), 5 states have call predecessors, (35), 5 states have return successors, (35), 35 states have call predecessors, (35), 35 states have call successors, (35) Second operand has 3 states, 3 states have (on average 1.3333333333333333) internal successors, (4), 3 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-15 17:47:32,005 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-15 17:47:32,007 INFO L93 Difference]: Finished difference Result 516 states and 568 transitions. [2022-10-15 17:47:32,009 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-10-15 17:47:32,011 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 1.3333333333333333) internal successors, (4), 3 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 4 [2022-10-15 17:47:32,014 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-15 17:47:32,047 INFO L225 Difference]: With dead ends: 516 [2022-10-15 17:47:32,047 INFO L226 Difference]: Without dead ends: 514 [2022-10-15 17:47:32,051 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-10-15 17:47:32,057 INFO L413 NwaCegarLoop]: 525 mSDtfsCounter, 28 mSDsluCounter, 523 mSDsCounter, 0 mSdLazyCounter, 29 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 28 SdHoareTripleChecker+Valid, 1048 SdHoareTripleChecker+Invalid, 29 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 29 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-10-15 17:47:32,059 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [28 Valid, 1048 Invalid, 29 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 29 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-10-15 17:47:32,092 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 514 states. [2022-10-15 17:47:32,224 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 514 to 487. [2022-10-15 17:47:32,232 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 487 states, 224 states have (on average 2.0892857142857144) internal successors, (468), 446 states have internal predecessors, (468), 35 states have call successors, (35), 5 states have call predecessors, (35), 5 states have return successors, (35), 35 states have call predecessors, (35), 35 states have call successors, (35) [2022-10-15 17:47:32,244 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 487 states to 487 states and 538 transitions. [2022-10-15 17:47:32,247 INFO L78 Accepts]: Start accepts. Automaton has 487 states and 538 transitions. Word has length 4 [2022-10-15 17:47:32,247 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-15 17:47:32,247 INFO L495 AbstractCegarLoop]: Abstraction has 487 states and 538 transitions. [2022-10-15 17:47:32,248 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 1.3333333333333333) internal successors, (4), 3 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-15 17:47:32,248 INFO L276 IsEmpty]: Start isEmpty. Operand 487 states and 538 transitions. [2022-10-15 17:47:32,248 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2022-10-15 17:47:32,249 INFO L187 NwaCegarLoop]: Found error trace [2022-10-15 17:47:32,249 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1] [2022-10-15 17:47:32,249 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-10-15 17:47:32,250 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [__CS_pthread_joinErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, __CS_pthread_joinErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, __CS_pthread_joinErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 224 more)] === [2022-10-15 17:47:32,250 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-15 17:47:32,251 INFO L85 PathProgramCache]: Analyzing trace with hash 5266309, now seen corresponding path program 1 times [2022-10-15 17:47:32,251 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-15 17:47:32,251 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1312366414] [2022-10-15 17:47:32,252 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-15 17:47:32,252 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-15 17:47:32,321 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 17:47:33,135 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-15 17:47:33,135 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-15 17:47:33,136 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1312366414] [2022-10-15 17:47:33,136 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1312366414] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-15 17:47:33,136 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-15 17:47:33,136 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-10-15 17:47:33,137 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [687362276] [2022-10-15 17:47:33,137 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-15 17:47:33,139 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-10-15 17:47:33,139 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-15 17:47:33,140 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-10-15 17:47:33,140 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-10-15 17:47:33,140 INFO L87 Difference]: Start difference. First operand 487 states and 538 transitions. Second operand has 3 states, 2 states have (on average 2.0) internal successors, (4), 3 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-15 17:47:33,802 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-15 17:47:33,803 INFO L93 Difference]: Finished difference Result 604 states and 671 transitions. [2022-10-15 17:47:33,803 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-10-15 17:47:33,805 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 2.0) internal successors, (4), 3 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 4 [2022-10-15 17:47:33,805 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-15 17:47:33,813 INFO L225 Difference]: With dead ends: 604 [2022-10-15 17:47:33,813 INFO L226 Difference]: Without dead ends: 604 [2022-10-15 17:47:33,818 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-10-15 17:47:33,820 INFO L413 NwaCegarLoop]: 356 mSDtfsCounter, 347 mSDsluCounter, 159 mSDsCounter, 0 mSdLazyCounter, 318 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 367 SdHoareTripleChecker+Valid, 515 SdHoareTripleChecker+Invalid, 323 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 318 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-10-15 17:47:33,822 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [367 Valid, 515 Invalid, 323 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 318 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-10-15 17:47:33,827 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 604 states. [2022-10-15 17:47:33,859 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 604 to 537. [2022-10-15 17:47:33,862 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 537 states, 266 states have (on average 2.1165413533834587) internal successors, (563), 484 states have internal predecessors, (563), 47 states have call successors, (47), 5 states have call predecessors, (47), 5 states have return successors, (47), 47 states have call predecessors, (47), 47 states have call successors, (47) [2022-10-15 17:47:33,866 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 537 states to 537 states and 657 transitions. [2022-10-15 17:47:33,867 INFO L78 Accepts]: Start accepts. Automaton has 537 states and 657 transitions. Word has length 4 [2022-10-15 17:47:33,868 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-15 17:47:33,873 INFO L495 AbstractCegarLoop]: Abstraction has 537 states and 657 transitions. [2022-10-15 17:47:33,878 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 2.0) internal successors, (4), 3 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-15 17:47:33,878 INFO L276 IsEmpty]: Start isEmpty. Operand 537 states and 657 transitions. [2022-10-15 17:47:33,878 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2022-10-15 17:47:33,878 INFO L187 NwaCegarLoop]: Found error trace [2022-10-15 17:47:33,879 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1] [2022-10-15 17:47:33,879 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-10-15 17:47:33,880 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [__CS_pthread_joinErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, __CS_pthread_joinErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, __CS_pthread_joinErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 224 more)] === [2022-10-15 17:47:33,880 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-15 17:47:33,881 INFO L85 PathProgramCache]: Analyzing trace with hash 5266310, now seen corresponding path program 1 times [2022-10-15 17:47:33,881 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-15 17:47:33,881 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1957924510] [2022-10-15 17:47:33,881 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-15 17:47:33,882 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-15 17:47:33,960 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 17:47:34,592 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-15 17:47:34,593 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-15 17:47:34,593 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1957924510] [2022-10-15 17:47:34,594 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1957924510] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-15 17:47:34,595 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-15 17:47:34,595 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-10-15 17:47:34,595 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [415277925] [2022-10-15 17:47:34,596 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-15 17:47:34,597 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-10-15 17:47:34,597 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-15 17:47:34,598 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-10-15 17:47:34,598 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-10-15 17:47:34,599 INFO L87 Difference]: Start difference. First operand 537 states and 657 transitions. Second operand has 3 states, 2 states have (on average 2.0) internal successors, (4), 3 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-15 17:47:35,087 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-15 17:47:35,087 INFO L93 Difference]: Finished difference Result 562 states and 683 transitions. [2022-10-15 17:47:35,090 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-10-15 17:47:35,090 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 2.0) internal successors, (4), 3 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 4 [2022-10-15 17:47:35,091 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-15 17:47:35,095 INFO L225 Difference]: With dead ends: 562 [2022-10-15 17:47:35,095 INFO L226 Difference]: Without dead ends: 562 [2022-10-15 17:47:35,099 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-10-15 17:47:35,102 INFO L413 NwaCegarLoop]: 520 mSDtfsCounter, 25 mSDsluCounter, 305 mSDsCounter, 0 mSdLazyCounter, 240 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 25 SdHoareTripleChecker+Valid, 825 SdHoareTripleChecker+Invalid, 240 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 240 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-10-15 17:47:35,103 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [25 Valid, 825 Invalid, 240 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 240 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-10-15 17:47:35,105 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 562 states. [2022-10-15 17:47:35,120 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 562 to 538. [2022-10-15 17:47:35,122 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 538 states, 267 states have (on average 2.1123595505617976) internal successors, (564), 485 states have internal predecessors, (564), 47 states have call successors, (47), 5 states have call predecessors, (47), 5 states have return successors, (47), 47 states have call predecessors, (47), 47 states have call successors, (47) [2022-10-15 17:47:35,128 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 538 states to 538 states and 658 transitions. [2022-10-15 17:47:35,128 INFO L78 Accepts]: Start accepts. Automaton has 538 states and 658 transitions. Word has length 4 [2022-10-15 17:47:35,128 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-15 17:47:35,129 INFO L495 AbstractCegarLoop]: Abstraction has 538 states and 658 transitions. [2022-10-15 17:47:35,129 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 2.0) internal successors, (4), 3 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-15 17:47:35,129 INFO L276 IsEmpty]: Start isEmpty. Operand 538 states and 658 transitions. [2022-10-15 17:47:35,130 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2022-10-15 17:47:35,130 INFO L187 NwaCegarLoop]: Found error trace [2022-10-15 17:47:35,130 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2022-10-15 17:47:35,130 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-10-15 17:47:35,131 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [__CS_pthread_joinErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, __CS_pthread_joinErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, __CS_pthread_joinErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 224 more)] === [2022-10-15 17:47:35,131 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-15 17:47:35,132 INFO L85 PathProgramCache]: Analyzing trace with hash 765959654, now seen corresponding path program 1 times [2022-10-15 17:47:35,132 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-15 17:47:35,132 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1519257825] [2022-10-15 17:47:35,132 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-15 17:47:35,133 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-15 17:47:35,172 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 17:47:35,373 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-15 17:47:35,373 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-15 17:47:35,374 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1519257825] [2022-10-15 17:47:35,374 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1519257825] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-15 17:47:35,374 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-15 17:47:35,374 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-10-15 17:47:35,375 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1201741368] [2022-10-15 17:47:35,375 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-15 17:47:35,375 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-10-15 17:47:35,376 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-15 17:47:35,376 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-10-15 17:47:35,376 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-10-15 17:47:35,377 INFO L87 Difference]: Start difference. First operand 538 states and 658 transitions. Second operand has 3 states, 2 states have (on average 3.0) internal successors, (6), 3 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-15 17:47:35,946 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-15 17:47:35,946 INFO L93 Difference]: Finished difference Result 615 states and 684 transitions. [2022-10-15 17:47:35,946 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-10-15 17:47:35,947 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 3.0) internal successors, (6), 3 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 6 [2022-10-15 17:47:35,947 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-15 17:47:35,957 INFO L225 Difference]: With dead ends: 615 [2022-10-15 17:47:35,958 INFO L226 Difference]: Without dead ends: 615 [2022-10-15 17:47:35,958 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-10-15 17:47:35,966 INFO L413 NwaCegarLoop]: 359 mSDtfsCounter, 340 mSDsluCounter, 167 mSDsCounter, 0 mSdLazyCounter, 320 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 360 SdHoareTripleChecker+Valid, 526 SdHoareTripleChecker+Invalid, 325 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 320 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-10-15 17:47:35,967 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [360 Valid, 526 Invalid, 325 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 320 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-10-15 17:47:35,971 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 615 states. [2022-10-15 17:47:36,005 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 615 to 542. [2022-10-15 17:47:36,006 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 542 states, 273 states have (on average 2.0952380952380953) internal successors, (572), 487 states have internal predecessors, (572), 49 states have call successors, (49), 5 states have call predecessors, (49), 5 states have return successors, (49), 49 states have call predecessors, (49), 49 states have call successors, (49) [2022-10-15 17:47:36,011 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 542 states to 542 states and 670 transitions. [2022-10-15 17:47:36,012 INFO L78 Accepts]: Start accepts. Automaton has 542 states and 670 transitions. Word has length 6 [2022-10-15 17:47:36,012 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-15 17:47:36,012 INFO L495 AbstractCegarLoop]: Abstraction has 542 states and 670 transitions. [2022-10-15 17:47:36,013 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 3.0) internal successors, (6), 3 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-15 17:47:36,013 INFO L276 IsEmpty]: Start isEmpty. Operand 542 states and 670 transitions. [2022-10-15 17:47:36,013 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2022-10-15 17:47:36,013 INFO L187 NwaCegarLoop]: Found error trace [2022-10-15 17:47:36,014 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2022-10-15 17:47:36,014 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-10-15 17:47:36,014 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [__CS_pthread_joinErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, __CS_pthread_joinErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, __CS_pthread_joinErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 224 more)] === [2022-10-15 17:47:36,015 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-15 17:47:36,016 INFO L85 PathProgramCache]: Analyzing trace with hash 765959655, now seen corresponding path program 1 times [2022-10-15 17:47:36,016 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-15 17:47:36,017 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [203756696] [2022-10-15 17:47:36,017 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-15 17:47:36,017 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-15 17:47:36,076 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 17:47:36,512 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-15 17:47:36,512 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-15 17:47:36,513 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [203756696] [2022-10-15 17:47:36,513 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [203756696] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-15 17:47:36,513 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-15 17:47:36,513 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-10-15 17:47:36,514 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1966669136] [2022-10-15 17:47:36,515 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-15 17:47:36,516 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-10-15 17:47:36,516 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-15 17:47:36,517 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-10-15 17:47:36,517 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-10-15 17:47:36,517 INFO L87 Difference]: Start difference. First operand 542 states and 670 transitions. Second operand has 3 states, 2 states have (on average 3.0) internal successors, (6), 3 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-15 17:47:37,015 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-15 17:47:37,015 INFO L93 Difference]: Finished difference Result 564 states and 693 transitions. [2022-10-15 17:47:37,016 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-10-15 17:47:37,016 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 3.0) internal successors, (6), 3 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 6 [2022-10-15 17:47:37,016 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-15 17:47:37,020 INFO L225 Difference]: With dead ends: 564 [2022-10-15 17:47:37,021 INFO L226 Difference]: Without dead ends: 564 [2022-10-15 17:47:37,021 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-10-15 17:47:37,023 INFO L413 NwaCegarLoop]: 517 mSDtfsCounter, 21 mSDsluCounter, 301 mSDsCounter, 0 mSdLazyCounter, 239 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 21 SdHoareTripleChecker+Valid, 818 SdHoareTripleChecker+Invalid, 239 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 239 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-10-15 17:47:37,027 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [21 Valid, 818 Invalid, 239 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 239 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-10-15 17:47:37,043 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 564 states. [2022-10-15 17:47:37,065 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 564 to 544. [2022-10-15 17:47:37,069 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 544 states, 275 states have (on average 2.0872727272727274) internal successors, (574), 489 states have internal predecessors, (574), 49 states have call successors, (49), 5 states have call predecessors, (49), 5 states have return successors, (49), 49 states have call predecessors, (49), 49 states have call successors, (49) [2022-10-15 17:47:37,078 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 544 states to 544 states and 672 transitions. [2022-10-15 17:47:37,079 INFO L78 Accepts]: Start accepts. Automaton has 544 states and 672 transitions. Word has length 6 [2022-10-15 17:47:37,079 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-15 17:47:37,079 INFO L495 AbstractCegarLoop]: Abstraction has 544 states and 672 transitions. [2022-10-15 17:47:37,080 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 3.0) internal successors, (6), 3 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-15 17:47:37,080 INFO L276 IsEmpty]: Start isEmpty. Operand 544 states and 672 transitions. [2022-10-15 17:47:37,081 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2022-10-15 17:47:37,081 INFO L187 NwaCegarLoop]: Found error trace [2022-10-15 17:47:37,081 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2022-10-15 17:47:37,082 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-10-15 17:47:37,082 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [__CS_pthread_joinErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, __CS_pthread_joinErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, __CS_pthread_joinErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 224 more)] === [2022-10-15 17:47:37,083 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-15 17:47:37,083 INFO L85 PathProgramCache]: Analyzing trace with hash 1647824007, now seen corresponding path program 1 times [2022-10-15 17:47:37,083 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-15 17:47:37,088 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1791585719] [2022-10-15 17:47:37,088 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-15 17:47:37,089 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-15 17:47:37,123 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 17:47:37,254 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-15 17:47:37,255 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-15 17:47:37,255 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1791585719] [2022-10-15 17:47:37,255 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1791585719] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-15 17:47:37,255 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-15 17:47:37,256 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-10-15 17:47:37,256 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1142742980] [2022-10-15 17:47:37,256 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-15 17:47:37,257 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-10-15 17:47:37,257 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-15 17:47:37,257 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-10-15 17:47:37,257 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-10-15 17:47:37,258 INFO L87 Difference]: Start difference. First operand 544 states and 672 transitions. Second operand has 3 states, 2 states have (on average 4.0) internal successors, (8), 3 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-15 17:47:37,803 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-15 17:47:37,803 INFO L93 Difference]: Finished difference Result 627 states and 698 transitions. [2022-10-15 17:47:37,804 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-10-15 17:47:37,804 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 4.0) internal successors, (8), 3 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 8 [2022-10-15 17:47:37,804 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-15 17:47:37,808 INFO L225 Difference]: With dead ends: 627 [2022-10-15 17:47:37,809 INFO L226 Difference]: Without dead ends: 627 [2022-10-15 17:47:37,809 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-10-15 17:47:37,810 INFO L413 NwaCegarLoop]: 362 mSDtfsCounter, 333 mSDsluCounter, 175 mSDsCounter, 0 mSdLazyCounter, 322 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 353 SdHoareTripleChecker+Valid, 537 SdHoareTripleChecker+Invalid, 327 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 322 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-10-15 17:47:37,811 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [353 Valid, 537 Invalid, 327 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 322 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-10-15 17:47:37,813 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 627 states. [2022-10-15 17:47:37,829 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 627 to 548. [2022-10-15 17:47:37,830 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 548 states, 281 states have (on average 2.0711743772241995) internal successors, (582), 491 states have internal predecessors, (582), 51 states have call successors, (51), 5 states have call predecessors, (51), 5 states have return successors, (51), 51 states have call predecessors, (51), 51 states have call successors, (51) [2022-10-15 17:47:37,835 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 548 states to 548 states and 684 transitions. [2022-10-15 17:47:37,835 INFO L78 Accepts]: Start accepts. Automaton has 548 states and 684 transitions. Word has length 8 [2022-10-15 17:47:37,835 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-15 17:47:37,836 INFO L495 AbstractCegarLoop]: Abstraction has 548 states and 684 transitions. [2022-10-15 17:47:37,836 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 4.0) internal successors, (8), 3 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-15 17:47:37,836 INFO L276 IsEmpty]: Start isEmpty. Operand 548 states and 684 transitions. [2022-10-15 17:47:37,837 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2022-10-15 17:47:37,837 INFO L187 NwaCegarLoop]: Found error trace [2022-10-15 17:47:37,837 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2022-10-15 17:47:37,837 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-10-15 17:47:37,838 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [__CS_pthread_joinErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, __CS_pthread_joinErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, __CS_pthread_joinErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 224 more)] === [2022-10-15 17:47:37,838 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-15 17:47:37,838 INFO L85 PathProgramCache]: Analyzing trace with hash 1647824008, now seen corresponding path program 1 times [2022-10-15 17:47:37,839 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-15 17:47:37,839 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1132630471] [2022-10-15 17:47:37,839 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-15 17:47:37,839 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-15 17:47:37,872 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 17:47:38,045 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-15 17:47:38,046 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-15 17:47:38,046 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1132630471] [2022-10-15 17:47:38,046 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1132630471] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-15 17:47:38,046 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-15 17:47:38,047 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-10-15 17:47:38,047 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1275343870] [2022-10-15 17:47:38,047 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-15 17:47:38,048 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-10-15 17:47:38,048 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-15 17:47:38,048 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-10-15 17:47:38,049 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-10-15 17:47:38,049 INFO L87 Difference]: Start difference. First operand 548 states and 684 transitions. Second operand has 3 states, 2 states have (on average 4.0) internal successors, (8), 3 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-15 17:47:38,534 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-15 17:47:38,535 INFO L93 Difference]: Finished difference Result 566 states and 703 transitions. [2022-10-15 17:47:38,535 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-10-15 17:47:38,536 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 4.0) internal successors, (8), 3 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 8 [2022-10-15 17:47:38,536 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-15 17:47:38,541 INFO L225 Difference]: With dead ends: 566 [2022-10-15 17:47:38,541 INFO L226 Difference]: Without dead ends: 566 [2022-10-15 17:47:38,542 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-10-15 17:47:38,543 INFO L413 NwaCegarLoop]: 514 mSDtfsCounter, 17 mSDsluCounter, 297 mSDsCounter, 0 mSdLazyCounter, 238 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 17 SdHoareTripleChecker+Valid, 811 SdHoareTripleChecker+Invalid, 238 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 238 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-10-15 17:47:38,543 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [17 Valid, 811 Invalid, 238 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 238 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-10-15 17:47:38,546 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 566 states. [2022-10-15 17:47:38,563 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 566 to 550. [2022-10-15 17:47:38,565 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 550 states, 283 states have (on average 2.0636042402826855) internal successors, (584), 493 states have internal predecessors, (584), 51 states have call successors, (51), 5 states have call predecessors, (51), 5 states have return successors, (51), 51 states have call predecessors, (51), 51 states have call successors, (51) [2022-10-15 17:47:38,570 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 550 states to 550 states and 686 transitions. [2022-10-15 17:47:38,571 INFO L78 Accepts]: Start accepts. Automaton has 550 states and 686 transitions. Word has length 8 [2022-10-15 17:47:38,571 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-15 17:47:38,572 INFO L495 AbstractCegarLoop]: Abstraction has 550 states and 686 transitions. [2022-10-15 17:47:38,572 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 4.0) internal successors, (8), 3 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-15 17:47:38,572 INFO L276 IsEmpty]: Start isEmpty. Operand 550 states and 686 transitions. [2022-10-15 17:47:38,573 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2022-10-15 17:47:38,573 INFO L187 NwaCegarLoop]: Found error trace [2022-10-15 17:47:38,573 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-15 17:47:38,573 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-10-15 17:47:38,574 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr6REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [__CS_pthread_joinErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, __CS_pthread_joinErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, __CS_pthread_joinErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 224 more)] === [2022-10-15 17:47:38,574 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-15 17:47:38,575 INFO L85 PathProgramCache]: Analyzing trace with hash -1284057240, now seen corresponding path program 1 times [2022-10-15 17:47:38,575 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-15 17:47:38,575 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [963886292] [2022-10-15 17:47:38,575 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-15 17:47:38,576 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-15 17:47:38,612 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 17:47:38,693 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-15 17:47:38,694 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-15 17:47:38,694 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [963886292] [2022-10-15 17:47:38,694 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [963886292] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-15 17:47:38,694 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-15 17:47:38,695 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-10-15 17:47:38,695 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1728368770] [2022-10-15 17:47:38,695 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-15 17:47:38,696 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-10-15 17:47:38,696 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-15 17:47:38,696 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-10-15 17:47:38,697 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-10-15 17:47:38,697 INFO L87 Difference]: Start difference. First operand 550 states and 686 transitions. Second operand has 3 states, 2 states have (on average 5.0) internal successors, (10), 3 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-15 17:47:39,212 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-15 17:47:39,213 INFO L93 Difference]: Finished difference Result 639 states and 712 transitions. [2022-10-15 17:47:39,213 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-10-15 17:47:39,213 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 5.0) internal successors, (10), 3 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 10 [2022-10-15 17:47:39,214 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-15 17:47:39,218 INFO L225 Difference]: With dead ends: 639 [2022-10-15 17:47:39,218 INFO L226 Difference]: Without dead ends: 639 [2022-10-15 17:47:39,219 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-10-15 17:47:39,220 INFO L413 NwaCegarLoop]: 365 mSDtfsCounter, 326 mSDsluCounter, 183 mSDsCounter, 0 mSdLazyCounter, 324 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 346 SdHoareTripleChecker+Valid, 548 SdHoareTripleChecker+Invalid, 329 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 324 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-10-15 17:47:39,220 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [346 Valid, 548 Invalid, 329 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 324 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-10-15 17:47:39,222 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 639 states. [2022-10-15 17:47:39,237 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 639 to 554. [2022-10-15 17:47:39,239 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 554 states, 289 states have (on average 2.0484429065743943) internal successors, (592), 495 states have internal predecessors, (592), 53 states have call successors, (53), 5 states have call predecessors, (53), 5 states have return successors, (53), 53 states have call predecessors, (53), 53 states have call successors, (53) [2022-10-15 17:47:39,243 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 554 states to 554 states and 698 transitions. [2022-10-15 17:47:39,243 INFO L78 Accepts]: Start accepts. Automaton has 554 states and 698 transitions. Word has length 10 [2022-10-15 17:47:39,243 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-15 17:47:39,244 INFO L495 AbstractCegarLoop]: Abstraction has 554 states and 698 transitions. [2022-10-15 17:47:39,244 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 5.0) internal successors, (10), 3 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-15 17:47:39,244 INFO L276 IsEmpty]: Start isEmpty. Operand 554 states and 698 transitions. [2022-10-15 17:47:39,245 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2022-10-15 17:47:39,245 INFO L187 NwaCegarLoop]: Found error trace [2022-10-15 17:47:39,245 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-15 17:47:39,245 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-10-15 17:47:39,245 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr7REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [__CS_pthread_joinErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, __CS_pthread_joinErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, __CS_pthread_joinErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 224 more)] === [2022-10-15 17:47:39,246 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-15 17:47:39,246 INFO L85 PathProgramCache]: Analyzing trace with hash -1284057239, now seen corresponding path program 1 times [2022-10-15 17:47:39,247 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-15 17:47:39,247 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1428928726] [2022-10-15 17:47:39,247 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-15 17:47:39,247 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-15 17:47:39,282 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 17:47:39,449 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-15 17:47:39,450 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-15 17:47:39,450 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1428928726] [2022-10-15 17:47:39,450 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1428928726] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-15 17:47:39,450 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-15 17:47:39,451 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-10-15 17:47:39,451 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1359236551] [2022-10-15 17:47:39,451 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-15 17:47:39,452 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-10-15 17:47:39,452 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-15 17:47:39,452 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-10-15 17:47:39,453 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-10-15 17:47:39,453 INFO L87 Difference]: Start difference. First operand 554 states and 698 transitions. Second operand has 3 states, 2 states have (on average 5.0) internal successors, (10), 3 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-15 17:47:40,014 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-15 17:47:40,014 INFO L93 Difference]: Finished difference Result 568 states and 713 transitions. [2022-10-15 17:47:40,015 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-10-15 17:47:40,015 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 5.0) internal successors, (10), 3 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 10 [2022-10-15 17:47:40,016 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-15 17:47:40,021 INFO L225 Difference]: With dead ends: 568 [2022-10-15 17:47:40,022 INFO L226 Difference]: Without dead ends: 568 [2022-10-15 17:47:40,022 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-10-15 17:47:40,023 INFO L413 NwaCegarLoop]: 511 mSDtfsCounter, 13 mSDsluCounter, 293 mSDsCounter, 0 mSdLazyCounter, 237 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 13 SdHoareTripleChecker+Valid, 804 SdHoareTripleChecker+Invalid, 237 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 237 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-10-15 17:47:40,023 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [13 Valid, 804 Invalid, 237 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 237 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-10-15 17:47:40,026 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 568 states. [2022-10-15 17:47:40,043 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 568 to 556. [2022-10-15 17:47:40,045 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 556 states, 291 states have (on average 2.0412371134020617) internal successors, (594), 497 states have internal predecessors, (594), 53 states have call successors, (53), 5 states have call predecessors, (53), 5 states have return successors, (53), 53 states have call predecessors, (53), 53 states have call successors, (53) [2022-10-15 17:47:40,049 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 556 states to 556 states and 700 transitions. [2022-10-15 17:47:40,050 INFO L78 Accepts]: Start accepts. Automaton has 556 states and 700 transitions. Word has length 10 [2022-10-15 17:47:40,050 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-15 17:47:40,050 INFO L495 AbstractCegarLoop]: Abstraction has 556 states and 700 transitions. [2022-10-15 17:47:40,050 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 5.0) internal successors, (10), 3 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-15 17:47:40,051 INFO L276 IsEmpty]: Start isEmpty. Operand 556 states and 700 transitions. [2022-10-15 17:47:40,051 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2022-10-15 17:47:40,051 INFO L187 NwaCegarLoop]: Found error trace [2022-10-15 17:47:40,052 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-15 17:47:40,052 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-10-15 17:47:40,052 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr8REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [__CS_pthread_joinErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, __CS_pthread_joinErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, __CS_pthread_joinErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 224 more)] === [2022-10-15 17:47:40,053 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-15 17:47:40,053 INFO L85 PathProgramCache]: Analyzing trace with hash 1924604930, now seen corresponding path program 1 times [2022-10-15 17:47:40,053 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-15 17:47:40,053 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1290696512] [2022-10-15 17:47:40,054 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-15 17:47:40,054 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-15 17:47:40,156 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 17:47:41,084 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-15 17:47:41,085 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-15 17:47:41,085 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1290696512] [2022-10-15 17:47:41,085 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1290696512] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-15 17:47:41,085 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-15 17:47:41,085 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-10-15 17:47:41,086 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1437651706] [2022-10-15 17:47:41,086 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-15 17:47:41,087 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-10-15 17:47:41,087 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-15 17:47:41,088 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-10-15 17:47:41,088 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2022-10-15 17:47:41,089 INFO L87 Difference]: Start difference. First operand 556 states and 700 transitions. Second operand has 7 states, 6 states have (on average 2.1666666666666665) internal successors, (13), 7 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-15 17:47:41,694 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-15 17:47:41,694 INFO L93 Difference]: Finished difference Result 563 states and 696 transitions. [2022-10-15 17:47:41,695 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-10-15 17:47:41,695 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 2.1666666666666665) internal successors, (13), 7 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 13 [2022-10-15 17:47:41,696 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-15 17:47:41,700 INFO L225 Difference]: With dead ends: 563 [2022-10-15 17:47:41,700 INFO L226 Difference]: Without dead ends: 563 [2022-10-15 17:47:41,701 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2022-10-15 17:47:41,702 INFO L413 NwaCegarLoop]: 336 mSDtfsCounter, 645 mSDsluCounter, 222 mSDsCounter, 0 mSdLazyCounter, 333 mSolverCounterSat, 36 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 665 SdHoareTripleChecker+Valid, 558 SdHoareTripleChecker+Invalid, 369 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 36 IncrementalHoareTripleChecker+Valid, 333 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-10-15 17:47:41,702 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [665 Valid, 558 Invalid, 369 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [36 Valid, 333 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-10-15 17:47:41,704 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 563 states. [2022-10-15 17:47:41,719 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 563 to 544. [2022-10-15 17:47:41,721 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 544 states, 291 states have (on average 1.9793814432989691) internal successors, (576), 485 states have internal predecessors, (576), 53 states have call successors, (53), 5 states have call predecessors, (53), 5 states have return successors, (53), 53 states have call predecessors, (53), 53 states have call successors, (53) [2022-10-15 17:47:41,725 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 544 states to 544 states and 682 transitions. [2022-10-15 17:47:41,726 INFO L78 Accepts]: Start accepts. Automaton has 544 states and 682 transitions. Word has length 13 [2022-10-15 17:47:41,726 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-15 17:47:41,726 INFO L495 AbstractCegarLoop]: Abstraction has 544 states and 682 transitions. [2022-10-15 17:47:41,727 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 2.1666666666666665) internal successors, (13), 7 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-15 17:47:41,727 INFO L276 IsEmpty]: Start isEmpty. Operand 544 states and 682 transitions. [2022-10-15 17:47:41,727 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2022-10-15 17:47:41,728 INFO L187 NwaCegarLoop]: Found error trace [2022-10-15 17:47:41,728 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-15 17:47:41,728 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-10-15 17:47:41,728 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr9REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [__CS_pthread_joinErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, __CS_pthread_joinErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, __CS_pthread_joinErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 224 more)] === [2022-10-15 17:47:41,729 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-15 17:47:41,729 INFO L85 PathProgramCache]: Analyzing trace with hash 1924604931, now seen corresponding path program 1 times [2022-10-15 17:47:41,730 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-15 17:47:41,730 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2033025748] [2022-10-15 17:47:41,730 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-15 17:47:41,730 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-15 17:47:41,798 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 17:47:43,013 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-15 17:47:43,014 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-15 17:47:43,014 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2033025748] [2022-10-15 17:47:43,014 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2033025748] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-15 17:47:43,014 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-15 17:47:43,014 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-10-15 17:47:43,015 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1729274859] [2022-10-15 17:47:43,015 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-15 17:47:43,015 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-10-15 17:47:43,015 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-15 17:47:43,016 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-10-15 17:47:43,016 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2022-10-15 17:47:43,016 INFO L87 Difference]: Start difference. First operand 544 states and 682 transitions. Second operand has 7 states, 6 states have (on average 2.1666666666666665) internal successors, (13), 7 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-15 17:47:44,391 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-15 17:47:44,392 INFO L93 Difference]: Finished difference Result 563 states and 702 transitions. [2022-10-15 17:47:44,392 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-10-15 17:47:44,392 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 2.1666666666666665) internal successors, (13), 7 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 13 [2022-10-15 17:47:44,393 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-15 17:47:44,397 INFO L225 Difference]: With dead ends: 563 [2022-10-15 17:47:44,397 INFO L226 Difference]: Without dead ends: 563 [2022-10-15 17:47:44,398 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=29, Invalid=43, Unknown=0, NotChecked=0, Total=72 [2022-10-15 17:47:44,399 INFO L413 NwaCegarLoop]: 497 mSDtfsCounter, 55 mSDsluCounter, 1124 mSDsCounter, 0 mSdLazyCounter, 939 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 55 SdHoareTripleChecker+Valid, 1621 SdHoareTripleChecker+Invalid, 943 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 939 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2022-10-15 17:47:44,399 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [55 Valid, 1621 Invalid, 943 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 939 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2022-10-15 17:47:44,401 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 563 states. [2022-10-15 17:47:44,416 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 563 to 547. [2022-10-15 17:47:44,418 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 547 states, 294 states have (on average 1.969387755102041) internal successors, (579), 488 states have internal predecessors, (579), 53 states have call successors, (53), 5 states have call predecessors, (53), 5 states have return successors, (53), 53 states have call predecessors, (53), 53 states have call successors, (53) [2022-10-15 17:47:44,422 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 547 states to 547 states and 685 transitions. [2022-10-15 17:47:44,423 INFO L78 Accepts]: Start accepts. Automaton has 547 states and 685 transitions. Word has length 13 [2022-10-15 17:47:44,423 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-15 17:47:44,423 INFO L495 AbstractCegarLoop]: Abstraction has 547 states and 685 transitions. [2022-10-15 17:47:44,423 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 2.1666666666666665) internal successors, (13), 7 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-15 17:47:44,424 INFO L276 IsEmpty]: Start isEmpty. Operand 547 states and 685 transitions. [2022-10-15 17:47:44,424 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2022-10-15 17:47:44,424 INFO L187 NwaCegarLoop]: Found error trace [2022-10-15 17:47:44,425 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-15 17:47:44,425 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-10-15 17:47:44,425 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr10REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [__CS_pthread_joinErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, __CS_pthread_joinErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, __CS_pthread_joinErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 224 more)] === [2022-10-15 17:47:44,426 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-15 17:47:44,426 INFO L85 PathProgramCache]: Analyzing trace with hash -1585562077, now seen corresponding path program 1 times [2022-10-15 17:47:44,426 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-15 17:47:44,426 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [453158298] [2022-10-15 17:47:44,426 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-15 17:47:44,427 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-15 17:47:44,479 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 17:47:44,980 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-15 17:47:44,980 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-15 17:47:44,980 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [453158298] [2022-10-15 17:47:44,981 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [453158298] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-15 17:47:44,981 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-15 17:47:44,981 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-10-15 17:47:44,982 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1950664522] [2022-10-15 17:47:44,982 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-15 17:47:44,982 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-10-15 17:47:44,983 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-15 17:47:44,983 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-10-15 17:47:44,984 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2022-10-15 17:47:44,984 INFO L87 Difference]: Start difference. First operand 547 states and 685 transitions. Second operand has 7 states, 6 states have (on average 2.5) internal successors, (15), 7 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-15 17:47:45,647 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-15 17:47:45,648 INFO L93 Difference]: Finished difference Result 572 states and 681 transitions. [2022-10-15 17:47:45,648 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-10-15 17:47:45,648 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 2.5) internal successors, (15), 7 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 15 [2022-10-15 17:47:45,649 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-15 17:47:45,653 INFO L225 Difference]: With dead ends: 572 [2022-10-15 17:47:45,653 INFO L226 Difference]: Without dead ends: 572 [2022-10-15 17:47:45,654 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2022-10-15 17:47:45,655 INFO L413 NwaCegarLoop]: 343 mSDtfsCounter, 926 mSDsluCounter, 270 mSDsCounter, 0 mSdLazyCounter, 358 mSolverCounterSat, 58 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 946 SdHoareTripleChecker+Valid, 613 SdHoareTripleChecker+Invalid, 416 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 58 IncrementalHoareTripleChecker+Valid, 358 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-10-15 17:47:45,655 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [946 Valid, 613 Invalid, 416 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [58 Valid, 358 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-10-15 17:47:45,658 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 572 states. [2022-10-15 17:47:45,673 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 572 to 535. [2022-10-15 17:47:45,675 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 535 states, 294 states have (on average 1.9081632653061225) internal successors, (561), 476 states have internal predecessors, (561), 53 states have call successors, (53), 5 states have call predecessors, (53), 5 states have return successors, (53), 53 states have call predecessors, (53), 53 states have call successors, (53) [2022-10-15 17:47:45,679 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 535 states to 535 states and 667 transitions. [2022-10-15 17:47:45,679 INFO L78 Accepts]: Start accepts. Automaton has 535 states and 667 transitions. Word has length 15 [2022-10-15 17:47:45,680 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-15 17:47:45,680 INFO L495 AbstractCegarLoop]: Abstraction has 535 states and 667 transitions. [2022-10-15 17:47:45,680 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 2.5) internal successors, (15), 7 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-15 17:47:45,680 INFO L276 IsEmpty]: Start isEmpty. Operand 535 states and 667 transitions. [2022-10-15 17:47:45,681 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2022-10-15 17:47:45,681 INFO L187 NwaCegarLoop]: Found error trace [2022-10-15 17:47:45,681 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-15 17:47:45,681 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2022-10-15 17:47:45,682 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr11REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [__CS_pthread_joinErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, __CS_pthread_joinErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, __CS_pthread_joinErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 224 more)] === [2022-10-15 17:47:45,682 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-15 17:47:45,682 INFO L85 PathProgramCache]: Analyzing trace with hash -1585562076, now seen corresponding path program 1 times [2022-10-15 17:47:45,682 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-15 17:47:45,683 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [5183644] [2022-10-15 17:47:45,683 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-15 17:47:45,683 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-15 17:47:45,746 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 17:47:46,622 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-15 17:47:46,623 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-15 17:47:46,623 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [5183644] [2022-10-15 17:47:46,623 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [5183644] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-15 17:47:46,624 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-15 17:47:46,624 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-10-15 17:47:46,624 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [181330267] [2022-10-15 17:47:46,624 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-15 17:47:46,625 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-10-15 17:47:46,625 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-15 17:47:46,626 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-10-15 17:47:46,626 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2022-10-15 17:47:46,626 INFO L87 Difference]: Start difference. First operand 535 states and 667 transitions. Second operand has 7 states, 6 states have (on average 2.5) internal successors, (15), 7 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-15 17:47:47,405 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-15 17:47:47,406 INFO L93 Difference]: Finished difference Result 548 states and 681 transitions. [2022-10-15 17:47:47,406 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-10-15 17:47:47,406 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 2.5) internal successors, (15), 7 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 15 [2022-10-15 17:47:47,407 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-15 17:47:47,410 INFO L225 Difference]: With dead ends: 548 [2022-10-15 17:47:47,411 INFO L226 Difference]: Without dead ends: 548 [2022-10-15 17:47:47,411 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=25, Invalid=31, Unknown=0, NotChecked=0, Total=56 [2022-10-15 17:47:47,412 INFO L413 NwaCegarLoop]: 485 mSDtfsCounter, 44 mSDsluCounter, 542 mSDsCounter, 0 mSdLazyCounter, 480 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 44 SdHoareTripleChecker+Valid, 1027 SdHoareTripleChecker+Invalid, 484 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 480 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-10-15 17:47:47,412 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [44 Valid, 1027 Invalid, 484 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 480 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-10-15 17:47:47,414 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 548 states. [2022-10-15 17:47:47,425 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 548 to 537. [2022-10-15 17:47:47,427 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 537 states, 296 states have (on average 1.902027027027027) internal successors, (563), 478 states have internal predecessors, (563), 53 states have call successors, (53), 5 states have call predecessors, (53), 5 states have return successors, (53), 53 states have call predecessors, (53), 53 states have call successors, (53) [2022-10-15 17:47:47,430 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 537 states to 537 states and 669 transitions. [2022-10-15 17:47:47,431 INFO L78 Accepts]: Start accepts. Automaton has 537 states and 669 transitions. Word has length 15 [2022-10-15 17:47:47,431 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-15 17:47:47,431 INFO L495 AbstractCegarLoop]: Abstraction has 537 states and 669 transitions. [2022-10-15 17:47:47,431 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 2.5) internal successors, (15), 7 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-15 17:47:47,431 INFO L276 IsEmpty]: Start isEmpty. Operand 537 states and 669 transitions. [2022-10-15 17:47:47,432 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2022-10-15 17:47:47,432 INFO L187 NwaCegarLoop]: Found error trace [2022-10-15 17:47:47,432 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-15 17:47:47,433 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2022-10-15 17:47:47,433 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr9REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [__CS_pthread_joinErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, __CS_pthread_joinErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, __CS_pthread_joinErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 224 more)] === [2022-10-15 17:47:47,433 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-15 17:47:47,434 INFO L85 PathProgramCache]: Analyzing trace with hash 509892967, now seen corresponding path program 1 times [2022-10-15 17:47:47,434 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-15 17:47:47,434 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1527145521] [2022-10-15 17:47:47,434 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-15 17:47:47,434 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-15 17:47:47,505 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 17:47:48,954 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-15 17:47:48,954 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-15 17:47:48,954 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1527145521] [2022-10-15 17:47:48,955 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1527145521] provided 0 perfect and 1 imperfect interpolant sequences [2022-10-15 17:47:48,955 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2053315143] [2022-10-15 17:47:48,955 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-15 17:47:48,955 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-15 17:47:48,956 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-10-15 17:47:48,963 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) [2022-10-15 17:47:48,990 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-10-15 17:47:49,193 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 17:47:49,216 INFO L263 TraceCheckSpWp]: Trace formula consists of 446 conjuncts, 49 conjunts are in the unsatisfiable core [2022-10-15 17:47:49,234 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-10-15 17:47:49,390 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-10-15 17:47:49,393 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-10-15 17:47:49,395 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-10-15 17:47:49,398 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-10-15 17:47:49,400 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-10-15 17:47:49,402 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-10-15 17:47:49,404 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-10-15 17:47:49,406 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-10-15 17:47:49,409 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-10-15 17:47:49,411 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-10-15 17:47:49,413 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-10-15 17:47:49,417 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-10-15 17:47:49,419 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-10-15 17:47:49,421 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-10-15 17:47:49,425 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-10-15 17:47:49,454 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 15 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 31 [2022-10-15 17:47:49,533 INFO L356 Elim1Store]: treesize reduction 80, result has 1.2 percent of original size [2022-10-15 17:47:49,534 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 0 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 10 case distinctions, treesize of input 86 treesize of output 76 [2022-10-15 17:47:49,774 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-15 17:47:49,774 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-10-15 17:47:50,066 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-15 17:47:50,067 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2053315143] provided 0 perfect and 2 imperfect interpolant sequences [2022-10-15 17:47:50,067 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-10-15 17:47:50,067 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 4, 4] total 12 [2022-10-15 17:47:50,068 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [398096395] [2022-10-15 17:47:50,068 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-10-15 17:47:50,068 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2022-10-15 17:47:50,069 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-15 17:47:50,069 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2022-10-15 17:47:50,069 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=53, Invalid=103, Unknown=0, NotChecked=0, Total=156 [2022-10-15 17:47:50,070 INFO L87 Difference]: Start difference. First operand 537 states and 669 transitions. Second operand has 13 states, 12 states have (on average 4.583333333333333) internal successors, (55), 13 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-15 17:47:53,390 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-15 17:47:53,390 INFO L93 Difference]: Finished difference Result 894 states and 1058 transitions. [2022-10-15 17:47:53,391 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-10-15 17:47:53,391 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 12 states have (on average 4.583333333333333) internal successors, (55), 13 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 19 [2022-10-15 17:47:53,391 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-15 17:47:53,398 INFO L225 Difference]: With dead ends: 894 [2022-10-15 17:47:53,398 INFO L226 Difference]: Without dead ends: 894 [2022-10-15 17:47:53,398 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 51 GetRequests, 33 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 79 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=134, Invalid=246, Unknown=0, NotChecked=0, Total=380 [2022-10-15 17:47:53,399 INFO L413 NwaCegarLoop]: 325 mSDtfsCounter, 396 mSDsluCounter, 2181 mSDsCounter, 0 mSdLazyCounter, 2683 mSolverCounterSat, 19 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 416 SdHoareTripleChecker+Valid, 2506 SdHoareTripleChecker+Invalid, 2702 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 19 IncrementalHoareTripleChecker+Valid, 2683 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.9s IncrementalHoareTripleChecker+Time [2022-10-15 17:47:53,400 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [416 Valid, 2506 Invalid, 2702 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [19 Valid, 2683 Invalid, 0 Unknown, 0 Unchecked, 2.9s Time] [2022-10-15 17:47:53,402 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 894 states. [2022-10-15 17:47:53,417 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 894 to 564. [2022-10-15 17:47:53,419 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 564 states, 323 states have (on average 1.8606811145510835) internal successors, (601), 505 states have internal predecessors, (601), 53 states have call successors, (53), 5 states have call predecessors, (53), 5 states have return successors, (53), 53 states have call predecessors, (53), 53 states have call successors, (53) [2022-10-15 17:47:53,422 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 564 states to 564 states and 707 transitions. [2022-10-15 17:47:53,423 INFO L78 Accepts]: Start accepts. Automaton has 564 states and 707 transitions. Word has length 19 [2022-10-15 17:47:53,423 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-15 17:47:53,423 INFO L495 AbstractCegarLoop]: Abstraction has 564 states and 707 transitions. [2022-10-15 17:47:53,423 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 12 states have (on average 4.583333333333333) internal successors, (55), 13 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-15 17:47:53,423 INFO L276 IsEmpty]: Start isEmpty. Operand 564 states and 707 transitions. [2022-10-15 17:47:53,424 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2022-10-15 17:47:53,424 INFO L187 NwaCegarLoop]: Found error trace [2022-10-15 17:47:53,424 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-15 17:47:53,490 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-10-15 17:47:53,640 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2022-10-15 17:47:53,640 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr11REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [__CS_pthread_joinErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, __CS_pthread_joinErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, __CS_pthread_joinErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 224 more)] === [2022-10-15 17:47:53,641 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-15 17:47:53,641 INFO L85 PathProgramCache]: Analyzing trace with hash 380873352, now seen corresponding path program 1 times [2022-10-15 17:47:53,641 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-15 17:47:53,641 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [444131795] [2022-10-15 17:47:53,642 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-15 17:47:53,642 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-15 17:47:53,732 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 17:47:54,960 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-15 17:47:54,961 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-15 17:47:54,961 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [444131795] [2022-10-15 17:47:54,961 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [444131795] provided 0 perfect and 1 imperfect interpolant sequences [2022-10-15 17:47:54,961 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [419432456] [2022-10-15 17:47:54,962 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-15 17:47:54,962 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-15 17:47:54,962 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-10-15 17:47:54,964 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) [2022-10-15 17:47:54,973 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-10-15 17:47:55,186 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 17:47:55,192 INFO L263 TraceCheckSpWp]: Trace formula consists of 463 conjuncts, 34 conjunts are in the unsatisfiable core [2022-10-15 17:47:55,198 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-10-15 17:47:55,258 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-10-15 17:47:55,260 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-10-15 17:47:55,261 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-10-15 17:47:55,263 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-10-15 17:47:55,264 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-10-15 17:47:55,266 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-10-15 17:47:55,268 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-10-15 17:47:55,269 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-10-15 17:47:55,270 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-10-15 17:47:55,271 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-10-15 17:47:55,326 INFO L356 Elim1Store]: treesize reduction 81, result has 20.6 percent of original size [2022-10-15 17:47:55,327 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 10 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 1 case distinctions, treesize of input 21 treesize of output 47 [2022-10-15 17:47:55,410 INFO L356 Elim1Store]: treesize reduction 48, result has 2.0 percent of original size [2022-10-15 17:47:55,411 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 792 treesize of output 746 [2022-10-15 17:47:55,937 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-15 17:47:55,937 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-10-15 17:47:56,182 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-15 17:47:56,183 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [419432456] provided 0 perfect and 2 imperfect interpolant sequences [2022-10-15 17:47:56,183 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-10-15 17:47:56,183 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 4, 4] total 13 [2022-10-15 17:47:56,183 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1943024557] [2022-10-15 17:47:56,184 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-10-15 17:47:56,184 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-10-15 17:47:56,184 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-15 17:47:56,185 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-10-15 17:47:56,185 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=52, Invalid=130, Unknown=0, NotChecked=0, Total=182 [2022-10-15 17:47:56,186 INFO L87 Difference]: Start difference. First operand 564 states and 707 transitions. Second operand has 14 states, 13 states have (on average 4.6923076923076925) internal successors, (61), 14 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-15 17:47:58,395 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-15 17:47:58,396 INFO L93 Difference]: Finished difference Result 894 states and 1058 transitions. [2022-10-15 17:47:58,397 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-10-15 17:47:58,397 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 13 states have (on average 4.6923076923076925) internal successors, (61), 14 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 21 [2022-10-15 17:47:58,397 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-15 17:47:58,403 INFO L225 Difference]: With dead ends: 894 [2022-10-15 17:47:58,403 INFO L226 Difference]: Without dead ends: 894 [2022-10-15 17:47:58,404 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 55 GetRequests, 35 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 84 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=149, Invalid=313, Unknown=0, NotChecked=0, Total=462 [2022-10-15 17:47:58,404 INFO L413 NwaCegarLoop]: 325 mSDtfsCounter, 402 mSDsluCounter, 1227 mSDsCounter, 0 mSdLazyCounter, 1603 mSolverCounterSat, 23 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 422 SdHoareTripleChecker+Valid, 1552 SdHoareTripleChecker+Invalid, 1626 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 23 IncrementalHoareTripleChecker+Valid, 1603 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.7s IncrementalHoareTripleChecker+Time [2022-10-15 17:47:58,405 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [422 Valid, 1552 Invalid, 1626 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [23 Valid, 1603 Invalid, 0 Unknown, 0 Unchecked, 1.7s Time] [2022-10-15 17:47:58,407 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 894 states. [2022-10-15 17:47:58,425 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 894 to 566. [2022-10-15 17:47:58,427 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 566 states, 325 states have (on average 1.8523076923076922) internal successors, (602), 507 states have internal predecessors, (602), 53 states have call successors, (53), 5 states have call predecessors, (53), 5 states have return successors, (53), 53 states have call predecessors, (53), 53 states have call successors, (53) [2022-10-15 17:47:58,430 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 566 states to 566 states and 708 transitions. [2022-10-15 17:47:58,430 INFO L78 Accepts]: Start accepts. Automaton has 566 states and 708 transitions. Word has length 21 [2022-10-15 17:47:58,431 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-15 17:47:58,431 INFO L495 AbstractCegarLoop]: Abstraction has 566 states and 708 transitions. [2022-10-15 17:47:58,431 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 13 states have (on average 4.6923076923076925) internal successors, (61), 14 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-15 17:47:58,431 INFO L276 IsEmpty]: Start isEmpty. Operand 566 states and 708 transitions. [2022-10-15 17:47:58,432 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2022-10-15 17:47:58,432 INFO L187 NwaCegarLoop]: Found error trace [2022-10-15 17:47:58,432 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-15 17:47:58,477 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2022-10-15 17:47:58,647 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2022-10-15 17:47:58,648 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr13REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [__CS_pthread_joinErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, __CS_pthread_joinErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, __CS_pthread_joinErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 224 more)] === [2022-10-15 17:47:58,649 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-15 17:47:58,649 INFO L85 PathProgramCache]: Analyzing trace with hash -619282330, now seen corresponding path program 1 times [2022-10-15 17:47:58,650 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-15 17:47:58,650 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1993205000] [2022-10-15 17:47:58,650 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-15 17:47:58,651 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-15 17:47:58,708 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 17:47:58,850 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2022-10-15 17:47:58,850 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-15 17:47:58,850 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1993205000] [2022-10-15 17:47:58,851 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1993205000] provided 0 perfect and 1 imperfect interpolant sequences [2022-10-15 17:47:58,851 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1061964859] [2022-10-15 17:47:58,851 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-15 17:47:58,851 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-15 17:47:58,851 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-10-15 17:47:58,853 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) [2022-10-15 17:47:58,874 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-10-15 17:47:59,089 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 17:47:59,096 INFO L263 TraceCheckSpWp]: Trace formula consists of 486 conjuncts, 4 conjunts are in the unsatisfiable core [2022-10-15 17:47:59,100 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-10-15 17:47:59,141 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 1 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-15 17:47:59,141 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-10-15 17:47:59,179 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 1 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-15 17:47:59,179 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1061964859] provided 0 perfect and 2 imperfect interpolant sequences [2022-10-15 17:47:59,180 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-10-15 17:47:59,180 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 5, 5] total 7 [2022-10-15 17:47:59,180 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1121074496] [2022-10-15 17:47:59,180 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-10-15 17:47:59,181 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-10-15 17:47:59,181 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-15 17:47:59,182 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-10-15 17:47:59,182 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2022-10-15 17:47:59,182 INFO L87 Difference]: Start difference. First operand 566 states and 708 transitions. Second operand has 7 states, 7 states have (on average 6.571428571428571) internal successors, (46), 7 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-15 17:47:59,376 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-15 17:47:59,376 INFO L93 Difference]: Finished difference Result 607 states and 741 transitions. [2022-10-15 17:47:59,377 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-10-15 17:47:59,377 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 6.571428571428571) internal successors, (46), 7 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 27 [2022-10-15 17:47:59,377 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-15 17:47:59,381 INFO L225 Difference]: With dead ends: 607 [2022-10-15 17:47:59,382 INFO L226 Difference]: Without dead ends: 607 [2022-10-15 17:47:59,382 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 62 GetRequests, 48 SyntacticMatches, 3 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 24 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=60, Invalid=96, Unknown=0, NotChecked=0, Total=156 [2022-10-15 17:47:59,383 INFO L413 NwaCegarLoop]: 481 mSDtfsCounter, 119 mSDsluCounter, 1914 mSDsCounter, 0 mSdLazyCounter, 87 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 119 SdHoareTripleChecker+Valid, 2395 SdHoareTripleChecker+Invalid, 100 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 87 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-10-15 17:47:59,383 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [119 Valid, 2395 Invalid, 100 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 87 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-10-15 17:47:59,385 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 607 states. [2022-10-15 17:47:59,400 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 607 to 585. [2022-10-15 17:47:59,402 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 585 states, 344 states have (on average 1.808139534883721) internal successors, (622), 526 states have internal predecessors, (622), 53 states have call successors, (53), 5 states have call predecessors, (53), 5 states have return successors, (53), 53 states have call predecessors, (53), 53 states have call successors, (53) [2022-10-15 17:47:59,406 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 585 states to 585 states and 728 transitions. [2022-10-15 17:47:59,406 INFO L78 Accepts]: Start accepts. Automaton has 585 states and 728 transitions. Word has length 27 [2022-10-15 17:47:59,406 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-15 17:47:59,406 INFO L495 AbstractCegarLoop]: Abstraction has 585 states and 728 transitions. [2022-10-15 17:47:59,407 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 6.571428571428571) internal successors, (46), 7 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-15 17:47:59,407 INFO L276 IsEmpty]: Start isEmpty. Operand 585 states and 728 transitions. [2022-10-15 17:47:59,408 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2022-10-15 17:47:59,408 INFO L187 NwaCegarLoop]: Found error trace [2022-10-15 17:47:59,408 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-15 17:47:59,454 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2022-10-15 17:47:59,622 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-15 17:47:59,623 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [__CS_pthread_joinErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, __CS_pthread_joinErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, __CS_pthread_joinErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 224 more)] === [2022-10-15 17:47:59,624 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-15 17:47:59,624 INFO L85 PathProgramCache]: Analyzing trace with hash -1699186977, now seen corresponding path program 1 times [2022-10-15 17:47:59,624 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-15 17:47:59,624 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1021317509] [2022-10-15 17:47:59,625 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-15 17:47:59,625 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-15 17:47:59,701 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 17:48:00,299 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2022-10-15 17:48:00,300 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-15 17:48:00,300 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1021317509] [2022-10-15 17:48:00,300 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1021317509] provided 0 perfect and 1 imperfect interpolant sequences [2022-10-15 17:48:00,300 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1029712795] [2022-10-15 17:48:00,300 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-15 17:48:00,301 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-15 17:48:00,301 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-10-15 17:48:00,302 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) [2022-10-15 17:48:00,325 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-10-15 17:48:00,557 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 17:48:00,564 INFO L263 TraceCheckSpWp]: Trace formula consists of 525 conjuncts, 23 conjunts are in the unsatisfiable core [2022-10-15 17:48:00,570 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-10-15 17:48:00,624 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-10-15 17:48:00,626 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-10-15 17:48:00,627 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-10-15 17:48:00,628 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-10-15 17:48:00,630 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-10-15 17:48:00,631 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-10-15 17:48:00,709 INFO L356 Elim1Store]: treesize reduction 138, result has 22.5 percent of original size [2022-10-15 17:48:00,710 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 6 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 2 case distinctions, treesize of input 21 treesize of output 60 [2022-10-15 17:48:00,753 INFO L356 Elim1Store]: treesize reduction 24, result has 4.0 percent of original size [2022-10-15 17:48:00,754 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 1109 treesize of output 1087 [2022-10-15 17:48:01,318 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2022-10-15 17:48:01,318 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-10-15 17:48:01,571 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2022-10-15 17:48:01,572 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1029712795] provided 0 perfect and 2 imperfect interpolant sequences [2022-10-15 17:48:01,572 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-10-15 17:48:01,572 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 7 [2022-10-15 17:48:01,573 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2110477203] [2022-10-15 17:48:01,573 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-10-15 17:48:01,573 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-10-15 17:48:01,573 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-15 17:48:01,574 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-10-15 17:48:01,574 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2022-10-15 17:48:01,575 INFO L87 Difference]: Start difference. First operand 585 states and 728 transitions. Second operand has 8 states, 7 states have (on average 8.714285714285714) internal successors, (61), 8 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-15 17:48:02,932 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-15 17:48:02,933 INFO L93 Difference]: Finished difference Result 906 states and 1073 transitions. [2022-10-15 17:48:02,933 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-10-15 17:48:02,933 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 8.714285714285714) internal successors, (61), 8 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 33 [2022-10-15 17:48:02,934 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-15 17:48:02,939 INFO L225 Difference]: With dead ends: 906 [2022-10-15 17:48:02,940 INFO L226 Difference]: Without dead ends: 906 [2022-10-15 17:48:02,940 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 68 GetRequests, 62 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2022-10-15 17:48:02,941 INFO L413 NwaCegarLoop]: 336 mSDtfsCounter, 384 mSDsluCounter, 984 mSDsCounter, 0 mSdLazyCounter, 1272 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 404 SdHoareTripleChecker+Valid, 1320 SdHoareTripleChecker+Invalid, 1275 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 1272 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2022-10-15 17:48:02,941 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [404 Valid, 1320 Invalid, 1275 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 1272 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2022-10-15 17:48:02,943 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 906 states. [2022-10-15 17:48:02,959 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 906 to 597. [2022-10-15 17:48:02,961 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 597 states, 356 states have (on average 1.7893258426966292) internal successors, (637), 538 states have internal predecessors, (637), 53 states have call successors, (53), 5 states have call predecessors, (53), 5 states have return successors, (53), 53 states have call predecessors, (53), 53 states have call successors, (53) [2022-10-15 17:48:02,964 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 597 states to 597 states and 743 transitions. [2022-10-15 17:48:02,964 INFO L78 Accepts]: Start accepts. Automaton has 597 states and 743 transitions. Word has length 33 [2022-10-15 17:48:02,964 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-15 17:48:02,964 INFO L495 AbstractCegarLoop]: Abstraction has 597 states and 743 transitions. [2022-10-15 17:48:02,965 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 8.714285714285714) internal successors, (61), 8 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-15 17:48:02,965 INFO L276 IsEmpty]: Start isEmpty. Operand 597 states and 743 transitions. [2022-10-15 17:48:02,966 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2022-10-15 17:48:02,966 INFO L187 NwaCegarLoop]: Found error trace [2022-10-15 17:48:02,966 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-15 17:48:03,008 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2022-10-15 17:48:03,180 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2022-10-15 17:48:03,181 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [__CS_pthread_joinErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, __CS_pthread_joinErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, __CS_pthread_joinErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 224 more)] === [2022-10-15 17:48:03,181 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-15 17:48:03,181 INFO L85 PathProgramCache]: Analyzing trace with hash -831109376, now seen corresponding path program 1 times [2022-10-15 17:48:03,182 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-15 17:48:03,182 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1690650723] [2022-10-15 17:48:03,182 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-15 17:48:03,183 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-15 17:48:03,246 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 17:48:04,021 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2022-10-15 17:48:04,022 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-15 17:48:04,022 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1690650723] [2022-10-15 17:48:04,022 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1690650723] provided 0 perfect and 1 imperfect interpolant sequences [2022-10-15 17:48:04,022 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [481032397] [2022-10-15 17:48:04,022 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-15 17:48:04,022 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-15 17:48:04,023 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-10-15 17:48:04,024 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) [2022-10-15 17:48:04,048 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-10-15 17:48:04,290 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 17:48:04,296 INFO L263 TraceCheckSpWp]: Trace formula consists of 543 conjuncts, 16 conjunts are in the unsatisfiable core [2022-10-15 17:48:04,300 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-10-15 17:48:04,343 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-10-15 17:48:04,345 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-10-15 17:48:04,346 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-10-15 17:48:04,441 INFO L356 Elim1Store]: treesize reduction 177, result has 23.7 percent of original size [2022-10-15 17:48:04,441 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 3 case distinctions, treesize of input 21 treesize of output 70 [2022-10-15 17:48:04,485 INFO L356 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2022-10-15 17:48:04,486 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 795 treesize of output 785 [2022-10-15 17:48:05,102 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2022-10-15 17:48:05,102 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-10-15 17:48:05,332 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2022-10-15 17:48:05,332 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [481032397] provided 0 perfect and 2 imperfect interpolant sequences [2022-10-15 17:48:05,332 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-10-15 17:48:05,332 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 7 [2022-10-15 17:48:05,333 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2080283899] [2022-10-15 17:48:05,333 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-10-15 17:48:05,333 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-10-15 17:48:05,333 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-15 17:48:05,334 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-10-15 17:48:05,334 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2022-10-15 17:48:05,334 INFO L87 Difference]: Start difference. First operand 597 states and 743 transitions. Second operand has 8 states, 7 states have (on average 9.571428571428571) internal successors, (67), 8 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-15 17:48:06,479 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-15 17:48:06,480 INFO L93 Difference]: Finished difference Result 907 states and 1074 transitions. [2022-10-15 17:48:06,480 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-10-15 17:48:06,480 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 9.571428571428571) internal successors, (67), 8 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 35 [2022-10-15 17:48:06,481 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-15 17:48:06,488 INFO L225 Difference]: With dead ends: 907 [2022-10-15 17:48:06,489 INFO L226 Difference]: Without dead ends: 907 [2022-10-15 17:48:06,490 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 71 GetRequests, 65 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2022-10-15 17:48:06,492 INFO L413 NwaCegarLoop]: 337 mSDtfsCounter, 365 mSDsluCounter, 712 mSDsCounter, 0 mSdLazyCounter, 1141 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 385 SdHoareTripleChecker+Valid, 1049 SdHoareTripleChecker+Invalid, 1144 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 1141 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2022-10-15 17:48:06,492 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [385 Valid, 1049 Invalid, 1144 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 1141 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2022-10-15 17:48:06,494 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 907 states. [2022-10-15 17:48:06,511 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 907 to 599. [2022-10-15 17:48:06,512 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 599 states, 358 states have (on average 1.782122905027933) internal successors, (638), 540 states have internal predecessors, (638), 53 states have call successors, (53), 5 states have call predecessors, (53), 5 states have return successors, (53), 53 states have call predecessors, (53), 53 states have call successors, (53) [2022-10-15 17:48:06,516 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 599 states to 599 states and 744 transitions. [2022-10-15 17:48:06,516 INFO L78 Accepts]: Start accepts. Automaton has 599 states and 744 transitions. Word has length 35 [2022-10-15 17:48:06,516 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-15 17:48:06,516 INFO L495 AbstractCegarLoop]: Abstraction has 599 states and 744 transitions. [2022-10-15 17:48:06,517 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 9.571428571428571) internal successors, (67), 8 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-15 17:48:06,517 INFO L276 IsEmpty]: Start isEmpty. Operand 599 states and 744 transitions. [2022-10-15 17:48:06,518 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2022-10-15 17:48:06,518 INFO L187 NwaCegarLoop]: Found error trace [2022-10-15 17:48:06,518 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-15 17:48:06,554 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2022-10-15 17:48:06,732 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2022-10-15 17:48:06,733 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [__CS_pthread_joinErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, __CS_pthread_joinErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, __CS_pthread_joinErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 224 more)] === [2022-10-15 17:48:06,734 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-15 17:48:06,734 INFO L85 PathProgramCache]: Analyzing trace with hash 167809889, now seen corresponding path program 1 times [2022-10-15 17:48:06,734 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-15 17:48:06,734 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1436346005] [2022-10-15 17:48:06,734 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-15 17:48:06,735 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-15 17:48:06,790 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 17:48:07,161 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2022-10-15 17:48:07,162 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-15 17:48:07,162 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1436346005] [2022-10-15 17:48:07,162 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1436346005] provided 0 perfect and 1 imperfect interpolant sequences [2022-10-15 17:48:07,162 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2130564836] [2022-10-15 17:48:07,162 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-15 17:48:07,163 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-15 17:48:07,164 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-10-15 17:48:07,165 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-10-15 17:48:07,193 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2022-10-15 17:48:07,465 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 17:48:07,470 INFO L263 TraceCheckSpWp]: Trace formula consists of 561 conjuncts, 11 conjunts are in the unsatisfiable core [2022-10-15 17:48:07,476 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-10-15 17:48:07,520 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-10-15 17:48:07,644 INFO L356 Elim1Store]: treesize reduction 200, result has 25.1 percent of original size [2022-10-15 17:48:07,645 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 4 case distinctions, treesize of input 21 treesize of output 77 [2022-10-15 17:48:07,694 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 106998 treesize of output 106486