/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_peterson.i -------------------------------------------------------------------------------- This is Ultimate 0.2.2-dev-05d3305-m [2022-10-15 17:47:56,392 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-10-15 17:47:56,397 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-10-15 17:47:56,460 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-10-15 17:47:56,461 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-10-15 17:47:56,466 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-10-15 17:47:56,471 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-10-15 17:47:56,480 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-10-15 17:47:56,500 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-10-15 17:47:56,501 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-10-15 17:47:56,505 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-10-15 17:47:56,513 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-10-15 17:47:56,514 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-10-15 17:47:56,515 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-10-15 17:47:56,521 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-10-15 17:47:56,526 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-10-15 17:47:56,527 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-10-15 17:47:56,528 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-10-15 17:47:56,538 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-10-15 17:47:56,546 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-10-15 17:47:56,559 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-10-15 17:47:56,562 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-10-15 17:47:56,563 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-10-15 17:47:56,568 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-10-15 17:47:56,579 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-10-15 17:47:56,580 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-10-15 17:47:56,580 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-10-15 17:47:56,581 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-10-15 17:47:56,582 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-10-15 17:47:56,583 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-10-15 17:47:56,584 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-10-15 17:47:56,585 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-10-15 17:47:56,586 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-10-15 17:47:56,587 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-10-15 17:47:56,588 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-10-15 17:47:56,588 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-10-15 17:47:56,589 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-10-15 17:47:56,589 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-10-15 17:47:56,590 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-10-15 17:47:56,591 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-10-15 17:47:56,592 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-10-15 17:47:56,593 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 17:47:56,622 INFO L113 SettingsManager]: Loading preferences was successful [2022-10-15 17:47:56,623 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-10-15 17:47:56,623 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-10-15 17:47:56,623 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-10-15 17:47:56,624 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-10-15 17:47:56,625 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-10-15 17:47:56,626 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-10-15 17:47:56,626 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-10-15 17:47:56,626 INFO L138 SettingsManager]: * Use SBE=true [2022-10-15 17:47:56,627 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-10-15 17:47:56,627 INFO L138 SettingsManager]: * sizeof long=4 [2022-10-15 17:47:56,627 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-10-15 17:47:56,627 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-10-15 17:47:56,627 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-10-15 17:47:56,628 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-10-15 17:47:56,628 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2022-10-15 17:47:56,628 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2022-10-15 17:47:56,628 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2022-10-15 17:47:56,628 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-10-15 17:47:56,629 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2022-10-15 17:47:56,629 INFO L138 SettingsManager]: * sizeof long double=12 [2022-10-15 17:47:56,629 INFO L138 SettingsManager]: * Use constant arrays=true [2022-10-15 17:47:56,629 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-10-15 17:47:56,629 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-10-15 17:47:56,630 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-10-15 17:47:56,630 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-10-15 17:47:56,630 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-10-15 17:47:56,630 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-10-15 17:47:56,631 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-10-15 17:47:56,631 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-10-15 17:47:56,631 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2022-10-15 17:47:57,075 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-10-15 17:47:57,103 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-10-15 17:47:57,107 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-10-15 17:47:57,108 INFO L271 PluginConnector]: Initializing CDTParser... [2022-10-15 17:47:57,109 INFO L275 PluginConnector]: CDTParser initialized [2022-10-15 17:47:57,111 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/seq-pthread/cs_peterson.i [2022-10-15 17:47:57,214 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/1c122ea2c/f1c5beed876d4ba2badd8caf81807069/FLAGa68559e74 [2022-10-15 17:47:57,975 INFO L306 CDTParser]: Found 1 translation units. [2022-10-15 17:47:57,976 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/seq-pthread/cs_peterson.i [2022-10-15 17:47:58,006 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/1c122ea2c/f1c5beed876d4ba2badd8caf81807069/FLAGa68559e74 [2022-10-15 17:47:58,217 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/1c122ea2c/f1c5beed876d4ba2badd8caf81807069 [2022-10-15 17:47:58,223 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-10-15 17:47:58,231 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2022-10-15 17:47:58,235 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-10-15 17:47:58,235 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-10-15 17:47:58,240 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-10-15 17:47:58,241 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.10 05:47:58" (1/1) ... [2022-10-15 17:47:58,244 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@384509cd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 05:47:58, skipping insertion in model container [2022-10-15 17:47:58,245 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.10 05:47:58" (1/1) ... [2022-10-15 17:47:58,254 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-10-15 17:47:58,345 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-10-15 17:47:58,737 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_peterson.i[23605,23618] [2022-10-15 17:47:58,934 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-10-15 17:47:58,952 INFO L203 MainTranslator]: Completed pre-run [2022-10-15 17:47:59,069 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_peterson.i[23605,23618] [2022-10-15 17:47:59,177 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-10-15 17:47:59,249 INFO L208 MainTranslator]: Completed translation [2022-10-15 17:47:59,249 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 05:47:59 WrapperNode [2022-10-15 17:47:59,251 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-10-15 17:47:59,253 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-10-15 17:47:59,257 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-10-15 17:47:59,257 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-10-15 17:47:59,266 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 05:47:59" (1/1) ... [2022-10-15 17:47:59,306 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 05:47:59" (1/1) ... [2022-10-15 17:47:59,381 INFO L138 Inliner]: procedures = 145, calls = 276, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 432 [2022-10-15 17:47:59,381 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-10-15 17:47:59,382 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-10-15 17:47:59,383 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-10-15 17:47:59,383 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-10-15 17:47:59,395 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 05:47:59" (1/1) ... [2022-10-15 17:47:59,395 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 05:47:59" (1/1) ... [2022-10-15 17:47:59,411 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 05:47:59" (1/1) ... [2022-10-15 17:47:59,411 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 05:47:59" (1/1) ... [2022-10-15 17:47:59,438 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 05:47:59" (1/1) ... [2022-10-15 17:47:59,445 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 05:47:59" (1/1) ... [2022-10-15 17:47:59,450 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 05:47:59" (1/1) ... [2022-10-15 17:47:59,454 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 05:47:59" (1/1) ... [2022-10-15 17:47:59,462 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-10-15 17:47:59,463 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-10-15 17:47:59,463 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-10-15 17:47:59,463 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-10-15 17:47:59,464 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 05:47:59" (1/1) ... [2022-10-15 17:47:59,479 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-10-15 17:47:59,508 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-10-15 17:47:59,540 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 17:47:59,551 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 17:47:59,612 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-10-15 17:47:59,612 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-10-15 17:47:59,612 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2022-10-15 17:47:59,612 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2022-10-15 17:47:59,613 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-10-15 17:47:59,613 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-10-15 17:47:59,613 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2022-10-15 17:47:59,613 INFO L130 BoogieDeclarations]: Found specification of procedure __CS_pthread_create [2022-10-15 17:47:59,613 INFO L138 BoogieDeclarations]: Found implementation of procedure __CS_pthread_create [2022-10-15 17:47:59,613 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2022-10-15 17:47:59,614 INFO L130 BoogieDeclarations]: Found specification of procedure __CS_pthread_join [2022-10-15 17:47:59,614 INFO L138 BoogieDeclarations]: Found implementation of procedure __CS_pthread_join [2022-10-15 17:47:59,614 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~TO~$Pointer$ [2022-10-15 17:47:59,614 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~TO~$Pointer$ [2022-10-15 17:47:59,614 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-10-15 17:47:59,614 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2022-10-15 17:47:59,615 INFO L130 BoogieDeclarations]: Found specification of procedure __CS_cs [2022-10-15 17:47:59,615 INFO L138 BoogieDeclarations]: Found implementation of procedure __CS_cs [2022-10-15 17:47:59,615 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-10-15 17:47:59,615 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-10-15 17:47:59,615 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-10-15 17:47:59,816 INFO L235 CfgBuilder]: Building ICFG [2022-10-15 17:47:59,825 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-10-15 17:48:01,252 INFO L276 CfgBuilder]: Performing block encoding [2022-10-15 17:48:01,266 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-10-15 17:48:01,266 INFO L300 CfgBuilder]: Removed 2 assume(true) statements. [2022-10-15 17:48:01,270 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.10 05:48:01 BoogieIcfgContainer [2022-10-15 17:48:01,271 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-10-15 17:48:01,274 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-10-15 17:48:01,274 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-10-15 17:48:01,278 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-10-15 17:48:01,278 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 15.10 05:47:58" (1/3) ... [2022-10-15 17:48:01,279 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@48b5db31 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.10 05:48:01, skipping insertion in model container [2022-10-15 17:48:01,279 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 05:47:59" (2/3) ... [2022-10-15 17:48:01,280 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@48b5db31 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.10 05:48:01, skipping insertion in model container [2022-10-15 17:48:01,280 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.10 05:48:01" (3/3) ... [2022-10-15 17:48:01,282 INFO L112 eAbstractionObserver]: Analyzing ICFG cs_peterson.i [2022-10-15 17:48:01,306 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-10-15 17:48:01,306 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 223 error locations. [2022-10-15 17:48:01,375 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-10-15 17:48:01,385 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;@7994e825, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-10-15 17:48:01,385 INFO L358 AbstractCegarLoop]: Starting to check reachability of 223 error locations. [2022-10-15 17:48:01,393 INFO L276 IsEmpty]: Start isEmpty. Operand has 478 states, 215 states have (on average 2.144186046511628) internal successors, (461), 438 states have internal predecessors, (461), 34 states have call successors, (34), 5 states have call predecessors, (34), 5 states have return successors, (34), 34 states have call predecessors, (34), 34 states have call successors, (34) [2022-10-15 17:48:01,401 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2022-10-15 17:48:01,401 INFO L187 NwaCegarLoop]: Found error trace [2022-10-15 17:48:01,402 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1] [2022-10-15 17:48:01,403 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 220 more)] === [2022-10-15 17:48:01,409 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-15 17:48:01,410 INFO L85 PathProgramCache]: Analyzing trace with hash 4405638, now seen corresponding path program 1 times [2022-10-15 17:48:01,421 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-15 17:48:01,422 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [639486560] [2022-10-15 17:48:01,422 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-15 17:48:01,423 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-15 17:48:01,644 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 17:48:01,809 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 17:48:01,810 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-15 17:48:01,810 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [639486560] [2022-10-15 17:48:01,811 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [639486560] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-15 17:48:01,811 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-15 17:48:01,811 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-10-15 17:48:01,813 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [766873471] [2022-10-15 17:48:01,814 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-15 17:48:01,820 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-10-15 17:48:01,821 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-15 17:48:01,856 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-10-15 17:48:01,857 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-10-15 17:48:01,861 INFO L87 Difference]: Start difference. First operand has 478 states, 215 states have (on average 2.144186046511628) internal successors, (461), 438 states have internal predecessors, (461), 34 states have call successors, (34), 5 states have call predecessors, (34), 5 states have return successors, (34), 34 states have call predecessors, (34), 34 states have call successors, (34) Second operand has 2 states, 2 states have (on average 2.0) internal successors, (4), 2 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 17:48:01,925 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-15 17:48:01,925 INFO L93 Difference]: Finished difference Result 474 states and 521 transitions. [2022-10-15 17:48:01,926 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-10-15 17:48:01,928 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 2.0) internal successors, (4), 2 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 17:48:01,928 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-15 17:48:01,946 INFO L225 Difference]: With dead ends: 474 [2022-10-15 17:48:01,946 INFO L226 Difference]: Without dead ends: 472 [2022-10-15 17:48:01,949 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-10-15 17:48:01,954 INFO L413 NwaCegarLoop]: 521 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 521 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-10-15 17:48:01,955 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 521 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-10-15 17:48:01,980 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 472 states. [2022-10-15 17:48:02,068 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 472 to 472. [2022-10-15 17:48:02,076 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 472 states, 214 states have (on average 2.107476635514019) internal successors, (451), 432 states have internal predecessors, (451), 34 states have call successors, (34), 5 states have call predecessors, (34), 5 states have return successors, (34), 34 states have call predecessors, (34), 34 states have call successors, (34) [2022-10-15 17:48:02,094 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 472 states to 472 states and 519 transitions. [2022-10-15 17:48:02,095 INFO L78 Accepts]: Start accepts. Automaton has 472 states and 519 transitions. Word has length 4 [2022-10-15 17:48:02,096 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-15 17:48:02,098 INFO L495 AbstractCegarLoop]: Abstraction has 472 states and 519 transitions. [2022-10-15 17:48:02,098 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 2.0) internal successors, (4), 2 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 17:48:02,098 INFO L276 IsEmpty]: Start isEmpty. Operand 472 states and 519 transitions. [2022-10-15 17:48:02,099 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2022-10-15 17:48:02,099 INFO L187 NwaCegarLoop]: Found error trace [2022-10-15 17:48:02,099 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1] [2022-10-15 17:48:02,100 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-10-15 17:48:02,100 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr12REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [__CS_pthread_joinErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, __CS_pthread_joinErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, __CS_pthread_joinErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 220 more)] === [2022-10-15 17:48:02,101 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-15 17:48:02,102 INFO L85 PathProgramCache]: Analyzing trace with hash 4404336, now seen corresponding path program 1 times [2022-10-15 17:48:02,102 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-15 17:48:02,102 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1376282258] [2022-10-15 17:48:02,102 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-15 17:48:02,103 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-15 17:48:02,154 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 17:48:02,336 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 17:48:02,337 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-15 17:48:02,337 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1376282258] [2022-10-15 17:48:02,338 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1376282258] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-15 17:48:02,338 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-15 17:48:02,338 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-10-15 17:48:02,338 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [338498633] [2022-10-15 17:48:02,339 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-15 17:48:02,344 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-10-15 17:48:02,344 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-15 17:48:02,345 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-10-15 17:48:02,345 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-10-15 17:48:02,345 INFO L87 Difference]: Start difference. First operand 472 states and 519 transitions. 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 17:48:02,495 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-15 17:48:02,495 INFO L93 Difference]: Finished difference Result 500 states and 548 transitions. [2022-10-15 17:48:02,496 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-10-15 17:48:02,496 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 17:48:02,496 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-15 17:48:02,500 INFO L225 Difference]: With dead ends: 500 [2022-10-15 17:48:02,500 INFO L226 Difference]: Without dead ends: 500 [2022-10-15 17:48:02,501 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 17:48:02,503 INFO L413 NwaCegarLoop]: 505 mSDtfsCounter, 28 mSDsluCounter, 503 mSDsCounter, 0 mSdLazyCounter, 29 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 28 SdHoareTripleChecker+Valid, 1008 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 17:48:02,503 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [28 Valid, 1008 Invalid, 29 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 29 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-10-15 17:48:02,505 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 500 states. [2022-10-15 17:48:02,525 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 500 to 473. [2022-10-15 17:48:02,527 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 473 states, 215 states have (on average 2.1023255813953488) internal successors, (452), 433 states have internal predecessors, (452), 34 states have call successors, (34), 5 states have call predecessors, (34), 5 states have return successors, (34), 34 states have call predecessors, (34), 34 states have call successors, (34) [2022-10-15 17:48:02,531 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 473 states to 473 states and 520 transitions. [2022-10-15 17:48:02,531 INFO L78 Accepts]: Start accepts. Automaton has 473 states and 520 transitions. Word has length 4 [2022-10-15 17:48:02,531 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-15 17:48:02,532 INFO L495 AbstractCegarLoop]: Abstraction has 473 states and 520 transitions. [2022-10-15 17:48:02,532 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 17:48:02,532 INFO L276 IsEmpty]: Start isEmpty. Operand 473 states and 520 transitions. [2022-10-15 17:48:02,532 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2022-10-15 17:48:02,533 INFO L187 NwaCegarLoop]: Found error trace [2022-10-15 17:48:02,533 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1] [2022-10-15 17:48:02,533 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-10-15 17:48:02,533 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [__CS_pthread_joinErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, __CS_pthread_joinErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, __CS_pthread_joinErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 220 more)] === [2022-10-15 17:48:02,534 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-15 17:48:02,534 INFO L85 PathProgramCache]: Analyzing trace with hash 4404357, now seen corresponding path program 1 times [2022-10-15 17:48:02,535 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-15 17:48:02,535 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [506714344] [2022-10-15 17:48:02,535 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-15 17:48:02,535 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-15 17:48:02,588 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 17:48:03,278 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 17:48:03,279 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-15 17:48:03,279 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [506714344] [2022-10-15 17:48:03,279 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [506714344] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-15 17:48:03,282 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-15 17:48:03,282 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-10-15 17:48:03,282 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [304476415] [2022-10-15 17:48:03,283 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-15 17:48:03,284 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-10-15 17:48:03,284 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-15 17:48:03,285 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-10-15 17:48:03,285 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-10-15 17:48:03,286 INFO L87 Difference]: Start difference. First operand 473 states and 520 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 17:48:03,804 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-15 17:48:03,804 INFO L93 Difference]: Finished difference Result 590 states and 653 transitions. [2022-10-15 17:48:03,806 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-10-15 17:48:03,806 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 17:48:03,806 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-15 17:48:03,814 INFO L225 Difference]: With dead ends: 590 [2022-10-15 17:48:03,814 INFO L226 Difference]: Without dead ends: 590 [2022-10-15 17:48:03,816 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 17:48:03,825 INFO L413 NwaCegarLoop]: 338 mSDtfsCounter, 347 mSDsluCounter, 146 mSDsCounter, 0 mSdLazyCounter, 313 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 367 SdHoareTripleChecker+Valid, 484 SdHoareTripleChecker+Invalid, 318 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 313 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-10-15 17:48:03,827 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [367 Valid, 484 Invalid, 318 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 313 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-10-15 17:48:03,831 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 590 states. [2022-10-15 17:48:03,856 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 590 to 523. [2022-10-15 17:48:03,858 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 523 states, 257 states have (on average 2.1284046692607004) internal successors, (547), 471 states have internal predecessors, (547), 46 states have call successors, (46), 5 states have call predecessors, (46), 5 states have return successors, (46), 46 states have call predecessors, (46), 46 states have call successors, (46) [2022-10-15 17:48:03,861 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 523 states to 523 states and 639 transitions. [2022-10-15 17:48:03,862 INFO L78 Accepts]: Start accepts. Automaton has 523 states and 639 transitions. Word has length 4 [2022-10-15 17:48:03,862 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-15 17:48:03,862 INFO L495 AbstractCegarLoop]: Abstraction has 523 states and 639 transitions. [2022-10-15 17:48:03,863 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 17:48:03,863 INFO L276 IsEmpty]: Start isEmpty. Operand 523 states and 639 transitions. [2022-10-15 17:48:03,863 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2022-10-15 17:48:03,863 INFO L187 NwaCegarLoop]: Found error trace [2022-10-15 17:48:03,863 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1] [2022-10-15 17:48:03,864 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-10-15 17:48:03,864 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [__CS_pthread_joinErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, __CS_pthread_joinErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, __CS_pthread_joinErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 220 more)] === [2022-10-15 17:48:03,865 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-15 17:48:03,865 INFO L85 PathProgramCache]: Analyzing trace with hash 4404358, now seen corresponding path program 1 times [2022-10-15 17:48:03,865 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-15 17:48:03,865 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [350939404] [2022-10-15 17:48:03,865 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-15 17:48:03,866 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-15 17:48:03,896 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 17:48:04,191 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 17:48:04,192 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-15 17:48:04,194 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [350939404] [2022-10-15 17:48:04,197 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [350939404] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-15 17:48:04,197 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-15 17:48:04,197 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-10-15 17:48:04,198 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1830386443] [2022-10-15 17:48:04,198 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-15 17:48:04,198 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-10-15 17:48:04,198 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-15 17:48:04,199 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-10-15 17:48:04,199 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-10-15 17:48:04,199 INFO L87 Difference]: Start difference. First operand 523 states and 639 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 17:48:04,577 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-15 17:48:04,577 INFO L93 Difference]: Finished difference Result 548 states and 665 transitions. [2022-10-15 17:48:04,577 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-10-15 17:48:04,578 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 17:48:04,578 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-15 17:48:04,582 INFO L225 Difference]: With dead ends: 548 [2022-10-15 17:48:04,582 INFO L226 Difference]: Without dead ends: 548 [2022-10-15 17:48:04,583 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 17:48:04,584 INFO L413 NwaCegarLoop]: 502 mSDtfsCounter, 25 mSDsluCounter, 291 mSDsCounter, 0 mSdLazyCounter, 236 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 25 SdHoareTripleChecker+Valid, 793 SdHoareTripleChecker+Invalid, 236 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 236 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-10-15 17:48:04,585 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [25 Valid, 793 Invalid, 236 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 236 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-10-15 17:48:04,587 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 548 states. [2022-10-15 17:48:04,601 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 548 to 524. [2022-10-15 17:48:04,603 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 524 states, 258 states have (on average 2.124031007751938) internal successors, (548), 472 states have internal predecessors, (548), 46 states have call successors, (46), 5 states have call predecessors, (46), 5 states have return successors, (46), 46 states have call predecessors, (46), 46 states have call successors, (46) [2022-10-15 17:48:04,609 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 524 states to 524 states and 640 transitions. [2022-10-15 17:48:04,609 INFO L78 Accepts]: Start accepts. Automaton has 524 states and 640 transitions. Word has length 4 [2022-10-15 17:48:04,610 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-15 17:48:04,610 INFO L495 AbstractCegarLoop]: Abstraction has 524 states and 640 transitions. [2022-10-15 17:48:04,610 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 17:48:04,610 INFO L276 IsEmpty]: Start isEmpty. Operand 524 states and 640 transitions. [2022-10-15 17:48:04,614 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2022-10-15 17:48:04,614 INFO L187 NwaCegarLoop]: Found error trace [2022-10-15 17:48:04,614 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2022-10-15 17:48:04,615 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-10-15 17:48:04,615 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [__CS_pthread_joinErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, __CS_pthread_joinErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, __CS_pthread_joinErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 220 more)] === [2022-10-15 17:48:04,616 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-15 17:48:04,616 INFO L85 PathProgramCache]: Analyzing trace with hash -62377114, now seen corresponding path program 1 times [2022-10-15 17:48:04,616 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-15 17:48:04,616 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1802018642] [2022-10-15 17:48:04,616 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-15 17:48:04,617 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-15 17:48:04,678 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 17:48:04,869 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 17:48:04,869 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-15 17:48:04,870 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1802018642] [2022-10-15 17:48:04,870 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1802018642] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-15 17:48:04,870 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-15 17:48:04,870 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-10-15 17:48:04,871 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [802254320] [2022-10-15 17:48:04,871 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-15 17:48:04,871 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-10-15 17:48:04,871 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-15 17:48:04,872 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-10-15 17:48:04,872 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-10-15 17:48:04,872 INFO L87 Difference]: Start difference. First operand 524 states and 640 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 17:48:05,330 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-15 17:48:05,330 INFO L93 Difference]: Finished difference Result 601 states and 666 transitions. [2022-10-15 17:48:05,331 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-10-15 17:48:05,331 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 17:48:05,331 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-15 17:48:05,336 INFO L225 Difference]: With dead ends: 601 [2022-10-15 17:48:05,336 INFO L226 Difference]: Without dead ends: 601 [2022-10-15 17:48:05,337 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 17:48:05,338 INFO L413 NwaCegarLoop]: 341 mSDtfsCounter, 340 mSDsluCounter, 154 mSDsCounter, 0 mSdLazyCounter, 315 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 360 SdHoareTripleChecker+Valid, 495 SdHoareTripleChecker+Invalid, 320 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 315 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-10-15 17:48:05,339 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [360 Valid, 495 Invalid, 320 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 315 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-10-15 17:48:05,341 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 601 states. [2022-10-15 17:48:05,356 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 601 to 528. [2022-10-15 17:48:05,357 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 528 states, 264 states have (on average 2.106060606060606) internal successors, (556), 474 states have internal predecessors, (556), 48 states have call successors, (48), 5 states have call predecessors, (48), 5 states have return successors, (48), 48 states have call predecessors, (48), 48 states have call successors, (48) [2022-10-15 17:48:05,361 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 528 states to 528 states and 652 transitions. [2022-10-15 17:48:05,361 INFO L78 Accepts]: Start accepts. Automaton has 528 states and 652 transitions. Word has length 6 [2022-10-15 17:48:05,362 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-15 17:48:05,362 INFO L495 AbstractCegarLoop]: Abstraction has 528 states and 652 transitions. [2022-10-15 17:48:05,362 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 17:48:05,362 INFO L276 IsEmpty]: Start isEmpty. Operand 528 states and 652 transitions. [2022-10-15 17:48:05,363 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2022-10-15 17:48:05,363 INFO L187 NwaCegarLoop]: Found error trace [2022-10-15 17:48:05,363 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2022-10-15 17:48:05,363 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-10-15 17:48:05,364 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [__CS_pthread_joinErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, __CS_pthread_joinErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, __CS_pthread_joinErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 220 more)] === [2022-10-15 17:48:05,364 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-15 17:48:05,364 INFO L85 PathProgramCache]: Analyzing trace with hash -62377113, now seen corresponding path program 1 times [2022-10-15 17:48:05,365 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-15 17:48:05,365 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1107193285] [2022-10-15 17:48:05,365 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-15 17:48:05,365 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-15 17:48:05,400 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 17:48:05,793 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 17:48:05,794 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-15 17:48:05,794 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1107193285] [2022-10-15 17:48:05,794 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1107193285] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-15 17:48:05,794 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-15 17:48:05,794 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-10-15 17:48:05,795 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [261341606] [2022-10-15 17:48:05,795 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-15 17:48:05,795 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-10-15 17:48:05,795 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-15 17:48:05,796 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-10-15 17:48:05,796 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-10-15 17:48:05,796 INFO L87 Difference]: Start difference. First operand 528 states and 652 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 17:48:06,165 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-15 17:48:06,165 INFO L93 Difference]: Finished difference Result 550 states and 675 transitions. [2022-10-15 17:48:06,166 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-10-15 17:48:06,166 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 17:48:06,166 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-15 17:48:06,170 INFO L225 Difference]: With dead ends: 550 [2022-10-15 17:48:06,170 INFO L226 Difference]: Without dead ends: 550 [2022-10-15 17:48:06,171 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 17:48:06,172 INFO L413 NwaCegarLoop]: 499 mSDtfsCounter, 21 mSDsluCounter, 287 mSDsCounter, 0 mSdLazyCounter, 235 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 21 SdHoareTripleChecker+Valid, 786 SdHoareTripleChecker+Invalid, 235 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 235 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-10-15 17:48:06,172 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [21 Valid, 786 Invalid, 235 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 235 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-10-15 17:48:06,175 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 550 states. [2022-10-15 17:48:06,190 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 550 to 530. [2022-10-15 17:48:06,191 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 530 states, 266 states have (on average 2.0977443609022557) internal successors, (558), 476 states have internal predecessors, (558), 48 states have call successors, (48), 5 states have call predecessors, (48), 5 states have return successors, (48), 48 states have call predecessors, (48), 48 states have call successors, (48) [2022-10-15 17:48:06,195 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 530 states to 530 states and 654 transitions. [2022-10-15 17:48:06,195 INFO L78 Accepts]: Start accepts. Automaton has 530 states and 654 transitions. Word has length 6 [2022-10-15 17:48:06,195 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-15 17:48:06,196 INFO L495 AbstractCegarLoop]: Abstraction has 530 states and 654 transitions. [2022-10-15 17:48:06,196 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 17:48:06,196 INFO L276 IsEmpty]: Start isEmpty. Operand 530 states and 654 transitions. [2022-10-15 17:48:06,196 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2022-10-15 17:48:06,197 INFO L187 NwaCegarLoop]: Found error trace [2022-10-15 17:48:06,197 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2022-10-15 17:48:06,197 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-10-15 17:48:06,197 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [__CS_pthread_joinErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, __CS_pthread_joinErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, __CS_pthread_joinErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 220 more)] === [2022-10-15 17:48:06,198 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-15 17:48:06,198 INFO L85 PathProgramCache]: Analyzing trace with hash 185138823, now seen corresponding path program 1 times [2022-10-15 17:48:06,198 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-15 17:48:06,198 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1282305038] [2022-10-15 17:48:06,199 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-15 17:48:06,199 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-15 17:48:06,228 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 17:48:06,466 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 17:48:06,466 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-15 17:48:06,467 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1282305038] [2022-10-15 17:48:06,467 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1282305038] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-15 17:48:06,467 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-15 17:48:06,467 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-10-15 17:48:06,467 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [594299790] [2022-10-15 17:48:06,467 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-15 17:48:06,468 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-10-15 17:48:06,468 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-15 17:48:06,469 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-10-15 17:48:06,469 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-10-15 17:48:06,469 INFO L87 Difference]: Start difference. First operand 530 states and 654 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 17:48:06,868 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-15 17:48:06,868 INFO L93 Difference]: Finished difference Result 613 states and 680 transitions. [2022-10-15 17:48:06,869 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-10-15 17:48:06,869 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 17:48:06,870 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-15 17:48:06,875 INFO L225 Difference]: With dead ends: 613 [2022-10-15 17:48:06,875 INFO L226 Difference]: Without dead ends: 613 [2022-10-15 17:48:06,876 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 17:48:06,877 INFO L413 NwaCegarLoop]: 344 mSDtfsCounter, 333 mSDsluCounter, 162 mSDsCounter, 0 mSdLazyCounter, 317 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 353 SdHoareTripleChecker+Valid, 506 SdHoareTripleChecker+Invalid, 322 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 317 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-10-15 17:48:06,877 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [353 Valid, 506 Invalid, 322 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 317 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-10-15 17:48:06,879 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 613 states. [2022-10-15 17:48:06,895 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 613 to 534. [2022-10-15 17:48:06,896 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 534 states, 272 states have (on average 2.0808823529411766) internal successors, (566), 478 states have internal predecessors, (566), 50 states have call successors, (50), 5 states have call predecessors, (50), 5 states have return successors, (50), 50 states have call predecessors, (50), 50 states have call successors, (50) [2022-10-15 17:48:06,900 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 534 states to 534 states and 666 transitions. [2022-10-15 17:48:06,900 INFO L78 Accepts]: Start accepts. Automaton has 534 states and 666 transitions. Word has length 8 [2022-10-15 17:48:06,901 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-15 17:48:06,901 INFO L495 AbstractCegarLoop]: Abstraction has 534 states and 666 transitions. [2022-10-15 17:48:06,901 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 17:48:06,901 INFO L276 IsEmpty]: Start isEmpty. Operand 534 states and 666 transitions. [2022-10-15 17:48:06,901 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2022-10-15 17:48:06,902 INFO L187 NwaCegarLoop]: Found error trace [2022-10-15 17:48:06,902 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2022-10-15 17:48:06,902 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-10-15 17:48:06,902 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [__CS_pthread_joinErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, __CS_pthread_joinErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, __CS_pthread_joinErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 220 more)] === [2022-10-15 17:48:06,903 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-15 17:48:06,903 INFO L85 PathProgramCache]: Analyzing trace with hash 185138824, now seen corresponding path program 1 times [2022-10-15 17:48:06,903 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-15 17:48:06,903 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1321431906] [2022-10-15 17:48:06,904 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-15 17:48:06,904 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-15 17:48:06,939 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 17:48:07,107 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 17:48:07,108 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-15 17:48:07,108 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1321431906] [2022-10-15 17:48:07,110 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1321431906] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-15 17:48:07,110 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-15 17:48:07,110 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-10-15 17:48:07,111 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1149216737] [2022-10-15 17:48:07,111 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-15 17:48:07,111 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-10-15 17:48:07,111 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-15 17:48:07,112 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-10-15 17:48:07,112 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-10-15 17:48:07,112 INFO L87 Difference]: Start difference. First operand 534 states and 666 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 17:48:07,482 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-15 17:48:07,482 INFO L93 Difference]: Finished difference Result 552 states and 685 transitions. [2022-10-15 17:48:07,483 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-10-15 17:48:07,483 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 17:48:07,484 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-15 17:48:07,487 INFO L225 Difference]: With dead ends: 552 [2022-10-15 17:48:07,488 INFO L226 Difference]: Without dead ends: 552 [2022-10-15 17:48:07,488 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 17:48:07,489 INFO L413 NwaCegarLoop]: 496 mSDtfsCounter, 17 mSDsluCounter, 283 mSDsCounter, 0 mSdLazyCounter, 234 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 17 SdHoareTripleChecker+Valid, 779 SdHoareTripleChecker+Invalid, 234 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 234 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-10-15 17:48:07,490 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [17 Valid, 779 Invalid, 234 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 234 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-10-15 17:48:07,492 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 552 states. [2022-10-15 17:48:07,506 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 552 to 536. [2022-10-15 17:48:07,507 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 536 states, 274 states have (on average 2.072992700729927) internal successors, (568), 480 states have internal predecessors, (568), 50 states have call successors, (50), 5 states have call predecessors, (50), 5 states have return successors, (50), 50 states have call predecessors, (50), 50 states have call successors, (50) [2022-10-15 17:48:07,511 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 536 states to 536 states and 668 transitions. [2022-10-15 17:48:07,511 INFO L78 Accepts]: Start accepts. Automaton has 536 states and 668 transitions. Word has length 8 [2022-10-15 17:48:07,511 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-15 17:48:07,512 INFO L495 AbstractCegarLoop]: Abstraction has 536 states and 668 transitions. [2022-10-15 17:48:07,512 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 17:48:07,512 INFO L276 IsEmpty]: Start isEmpty. Operand 536 states and 668 transitions. [2022-10-15 17:48:07,512 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2022-10-15 17:48:07,513 INFO L187 NwaCegarLoop]: Found error trace [2022-10-15 17:48:07,513 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-15 17:48:07,513 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-10-15 17:48:07,513 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr6REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [__CS_pthread_joinErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, __CS_pthread_joinErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, __CS_pthread_joinErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 220 more)] === [2022-10-15 17:48:07,514 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-15 17:48:07,514 INFO L85 PathProgramCache]: Analyzing trace with hash 1824753128, now seen corresponding path program 1 times [2022-10-15 17:48:07,514 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-15 17:48:07,514 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1736686382] [2022-10-15 17:48:07,514 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-15 17:48:07,515 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-15 17:48:07,542 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 17:48:07,605 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 17:48:07,606 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-15 17:48:07,606 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1736686382] [2022-10-15 17:48:07,606 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1736686382] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-15 17:48:07,606 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-15 17:48:07,607 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-10-15 17:48:07,607 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1619853711] [2022-10-15 17:48:07,607 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-15 17:48:07,607 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-10-15 17:48:07,607 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-15 17:48:07,608 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-10-15 17:48:07,608 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-10-15 17:48:07,608 INFO L87 Difference]: Start difference. First operand 536 states and 668 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 17:48:08,046 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-15 17:48:08,046 INFO L93 Difference]: Finished difference Result 625 states and 694 transitions. [2022-10-15 17:48:08,046 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-10-15 17:48:08,047 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 17:48:08,047 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-15 17:48:08,051 INFO L225 Difference]: With dead ends: 625 [2022-10-15 17:48:08,051 INFO L226 Difference]: Without dead ends: 625 [2022-10-15 17:48:08,052 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 17:48:08,053 INFO L413 NwaCegarLoop]: 347 mSDtfsCounter, 326 mSDsluCounter, 170 mSDsCounter, 0 mSdLazyCounter, 319 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 346 SdHoareTripleChecker+Valid, 517 SdHoareTripleChecker+Invalid, 324 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 319 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-10-15 17:48:08,053 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [346 Valid, 517 Invalid, 324 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 319 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-10-15 17:48:08,055 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 625 states. [2022-10-15 17:48:08,070 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 625 to 540. [2022-10-15 17:48:08,072 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 540 states, 280 states have (on average 2.057142857142857) internal successors, (576), 482 states have internal predecessors, (576), 52 states have call successors, (52), 5 states have call predecessors, (52), 5 states have return successors, (52), 52 states have call predecessors, (52), 52 states have call successors, (52) [2022-10-15 17:48:08,076 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 540 states to 540 states and 680 transitions. [2022-10-15 17:48:08,076 INFO L78 Accepts]: Start accepts. Automaton has 540 states and 680 transitions. Word has length 10 [2022-10-15 17:48:08,076 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-15 17:48:08,077 INFO L495 AbstractCegarLoop]: Abstraction has 540 states and 680 transitions. [2022-10-15 17:48:08,077 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 17:48:08,077 INFO L276 IsEmpty]: Start isEmpty. Operand 540 states and 680 transitions. [2022-10-15 17:48:08,078 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2022-10-15 17:48:08,078 INFO L187 NwaCegarLoop]: Found error trace [2022-10-15 17:48:08,078 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-15 17:48:08,078 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-10-15 17:48:08,078 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr7REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [__CS_pthread_joinErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, __CS_pthread_joinErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, __CS_pthread_joinErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 220 more)] === [2022-10-15 17:48:08,079 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-15 17:48:08,079 INFO L85 PathProgramCache]: Analyzing trace with hash 1824753129, now seen corresponding path program 1 times [2022-10-15 17:48:08,079 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-15 17:48:08,079 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [722645493] [2022-10-15 17:48:08,080 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-15 17:48:08,080 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-15 17:48:08,109 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 17:48:08,241 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 17:48:08,241 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-15 17:48:08,241 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [722645493] [2022-10-15 17:48:08,241 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [722645493] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-15 17:48:08,242 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-15 17:48:08,242 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-10-15 17:48:08,242 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1341908240] [2022-10-15 17:48:08,242 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-15 17:48:08,243 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-10-15 17:48:08,243 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-15 17:48:08,243 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-10-15 17:48:08,243 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-10-15 17:48:08,244 INFO L87 Difference]: Start difference. First operand 540 states and 680 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 17:48:08,591 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-15 17:48:08,591 INFO L93 Difference]: Finished difference Result 554 states and 695 transitions. [2022-10-15 17:48:08,592 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-10-15 17:48:08,592 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 17:48:08,592 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-15 17:48:08,596 INFO L225 Difference]: With dead ends: 554 [2022-10-15 17:48:08,596 INFO L226 Difference]: Without dead ends: 554 [2022-10-15 17:48:08,597 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 17:48:08,598 INFO L413 NwaCegarLoop]: 493 mSDtfsCounter, 13 mSDsluCounter, 279 mSDsCounter, 0 mSdLazyCounter, 233 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 13 SdHoareTripleChecker+Valid, 772 SdHoareTripleChecker+Invalid, 233 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 233 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-10-15 17:48:08,598 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [13 Valid, 772 Invalid, 233 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 233 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-10-15 17:48:08,600 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 554 states. [2022-10-15 17:48:08,613 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 554 to 542. [2022-10-15 17:48:08,614 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 542 states, 282 states have (on average 2.049645390070922) internal successors, (578), 484 states have internal predecessors, (578), 52 states have call successors, (52), 5 states have call predecessors, (52), 5 states have return successors, (52), 52 states have call predecessors, (52), 52 states have call successors, (52) [2022-10-15 17:48:08,617 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 542 states to 542 states and 682 transitions. [2022-10-15 17:48:08,618 INFO L78 Accepts]: Start accepts. Automaton has 542 states and 682 transitions. Word has length 10 [2022-10-15 17:48:08,618 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-15 17:48:08,618 INFO L495 AbstractCegarLoop]: Abstraction has 542 states and 682 transitions. [2022-10-15 17:48:08,618 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 17:48:08,619 INFO L276 IsEmpty]: Start isEmpty. Operand 542 states and 682 transitions. [2022-10-15 17:48:08,619 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2022-10-15 17:48:08,619 INFO L187 NwaCegarLoop]: Found error trace [2022-10-15 17:48:08,619 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-15 17:48:08,620 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-10-15 17:48:08,620 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr8REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [__CS_pthread_joinErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, __CS_pthread_joinErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, __CS_pthread_joinErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 220 more)] === [2022-10-15 17:48:08,620 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-15 17:48:08,621 INFO L85 PathProgramCache]: Analyzing trace with hash -180520730, now seen corresponding path program 1 times [2022-10-15 17:48:08,621 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-15 17:48:08,621 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2020014148] [2022-10-15 17:48:08,621 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-15 17:48:08,621 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-15 17:48:08,684 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 17:48:09,308 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 17:48:09,308 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-15 17:48:09,308 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2020014148] [2022-10-15 17:48:09,309 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2020014148] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-15 17:48:09,309 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-15 17:48:09,309 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-10-15 17:48:09,309 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [298330605] [2022-10-15 17:48:09,309 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-15 17:48:09,310 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-10-15 17:48:09,310 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-15 17:48:09,310 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-10-15 17:48:09,311 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2022-10-15 17:48:09,311 INFO L87 Difference]: Start difference. First operand 542 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 17:48:09,778 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-15 17:48:09,778 INFO L93 Difference]: Finished difference Result 549 states and 678 transitions. [2022-10-15 17:48:09,778 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-10-15 17:48:09,779 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 17:48:09,779 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-15 17:48:09,782 INFO L225 Difference]: With dead ends: 549 [2022-10-15 17:48:09,783 INFO L226 Difference]: Without dead ends: 549 [2022-10-15 17:48:09,783 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 17:48:09,784 INFO L413 NwaCegarLoop]: 318 mSDtfsCounter, 965 mSDsluCounter, 196 mSDsCounter, 0 mSdLazyCounter, 323 mSolverCounterSat, 58 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 985 SdHoareTripleChecker+Valid, 514 SdHoareTripleChecker+Invalid, 381 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 58 IncrementalHoareTripleChecker+Valid, 323 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-10-15 17:48:09,785 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [985 Valid, 514 Invalid, 381 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [58 Valid, 323 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-10-15 17:48:09,786 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 549 states. [2022-10-15 17:48:09,799 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 549 to 530. [2022-10-15 17:48:09,800 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 530 states, 282 states have (on average 1.9858156028368794) internal successors, (560), 472 states have internal predecessors, (560), 52 states have call successors, (52), 5 states have call predecessors, (52), 5 states have return successors, (52), 52 states have call predecessors, (52), 52 states have call successors, (52) [2022-10-15 17:48:09,804 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 530 states to 530 states and 664 transitions. [2022-10-15 17:48:09,804 INFO L78 Accepts]: Start accepts. Automaton has 530 states and 664 transitions. Word has length 13 [2022-10-15 17:48:09,804 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-15 17:48:09,804 INFO L495 AbstractCegarLoop]: Abstraction has 530 states and 664 transitions. [2022-10-15 17:48:09,805 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 17:48:09,805 INFO L276 IsEmpty]: Start isEmpty. Operand 530 states and 664 transitions. [2022-10-15 17:48:09,805 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2022-10-15 17:48:09,805 INFO L187 NwaCegarLoop]: Found error trace [2022-10-15 17:48:09,805 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-15 17:48:09,806 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-10-15 17:48:09,806 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr9REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [__CS_pthread_joinErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, __CS_pthread_joinErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, __CS_pthread_joinErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 220 more)] === [2022-10-15 17:48:09,806 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-15 17:48:09,806 INFO L85 PathProgramCache]: Analyzing trace with hash -180520729, now seen corresponding path program 1 times [2022-10-15 17:48:09,807 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-15 17:48:09,807 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [435842655] [2022-10-15 17:48:09,807 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-15 17:48:09,807 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-15 17:48:09,851 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 17:48:10,611 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 17:48:10,611 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-15 17:48:10,611 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [435842655] [2022-10-15 17:48:10,612 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [435842655] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-15 17:48:10,612 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-15 17:48:10,612 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-10-15 17:48:10,612 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [134757940] [2022-10-15 17:48:10,612 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-15 17:48:10,613 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-10-15 17:48:10,613 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-15 17:48:10,613 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-10-15 17:48:10,614 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2022-10-15 17:48:10,614 INFO L87 Difference]: Start difference. First operand 530 states and 664 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 17:48:11,457 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-15 17:48:11,457 INFO L93 Difference]: Finished difference Result 549 states and 684 transitions. [2022-10-15 17:48:11,458 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-10-15 17:48:11,458 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 17:48:11,458 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-15 17:48:11,462 INFO L225 Difference]: With dead ends: 549 [2022-10-15 17:48:11,462 INFO L226 Difference]: Without dead ends: 549 [2022-10-15 17:48:11,462 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 17:48:11,463 INFO L413 NwaCegarLoop]: 479 mSDtfsCounter, 96 mSDsluCounter, 794 mSDsCounter, 0 mSdLazyCounter, 689 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 96 SdHoareTripleChecker+Valid, 1273 SdHoareTripleChecker+Invalid, 697 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 689 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-10-15 17:48:11,464 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [96 Valid, 1273 Invalid, 697 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 689 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-10-15 17:48:11,465 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 549 states. [2022-10-15 17:48:11,478 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 549 to 533. [2022-10-15 17:48:11,479 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 533 states, 285 states have (on average 1.975438596491228) internal successors, (563), 475 states have internal predecessors, (563), 52 states have call successors, (52), 5 states have call predecessors, (52), 5 states have return successors, (52), 52 states have call predecessors, (52), 52 states have call successors, (52) [2022-10-15 17:48:11,483 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 533 states to 533 states and 667 transitions. [2022-10-15 17:48:11,483 INFO L78 Accepts]: Start accepts. Automaton has 533 states and 667 transitions. Word has length 13 [2022-10-15 17:48:11,483 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-15 17:48:11,483 INFO L495 AbstractCegarLoop]: Abstraction has 533 states and 667 transitions. [2022-10-15 17:48:11,484 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 17:48:11,484 INFO L276 IsEmpty]: Start isEmpty. Operand 533 states and 667 transitions. [2022-10-15 17:48:11,484 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2022-10-15 17:48:11,484 INFO L187 NwaCegarLoop]: Found error trace [2022-10-15 17:48:11,485 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-15 17:48:11,485 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2022-10-15 17:48:11,485 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr10REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [__CS_pthread_joinErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, __CS_pthread_joinErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, __CS_pthread_joinErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 220 more)] === [2022-10-15 17:48:11,486 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-15 17:48:11,486 INFO L85 PathProgramCache]: Analyzing trace with hash -1681725817, now seen corresponding path program 1 times [2022-10-15 17:48:11,486 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-15 17:48:11,486 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [189282842] [2022-10-15 17:48:11,486 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-15 17:48:11,487 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-15 17:48:11,548 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 17:48:12,014 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 17:48:12,015 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-15 17:48:12,015 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [189282842] [2022-10-15 17:48:12,015 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [189282842] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-15 17:48:12,015 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-15 17:48:12,015 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-10-15 17:48:12,016 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1042677407] [2022-10-15 17:48:12,016 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-15 17:48:12,016 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-10-15 17:48:12,016 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-15 17:48:12,017 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-10-15 17:48:12,017 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2022-10-15 17:48:12,017 INFO L87 Difference]: Start difference. First operand 533 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 17:48:12,436 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-15 17:48:12,436 INFO L93 Difference]: Finished difference Result 558 states and 663 transitions. [2022-10-15 17:48:12,436 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-10-15 17:48:12,436 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 17:48:12,437 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-15 17:48:12,440 INFO L225 Difference]: With dead ends: 558 [2022-10-15 17:48:12,440 INFO L226 Difference]: Without dead ends: 558 [2022-10-15 17:48:12,441 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 17:48:12,442 INFO L413 NwaCegarLoop]: 325 mSDtfsCounter, 926 mSDsluCounter, 244 mSDsCounter, 0 mSdLazyCounter, 348 mSolverCounterSat, 58 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 946 SdHoareTripleChecker+Valid, 569 SdHoareTripleChecker+Invalid, 406 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 58 IncrementalHoareTripleChecker+Valid, 348 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-10-15 17:48:12,442 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [946 Valid, 569 Invalid, 406 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [58 Valid, 348 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-10-15 17:48:12,444 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 558 states. [2022-10-15 17:48:12,456 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 558 to 521. [2022-10-15 17:48:12,457 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 521 states, 285 states have (on average 1.912280701754386) internal successors, (545), 463 states have internal predecessors, (545), 52 states have call successors, (52), 5 states have call predecessors, (52), 5 states have return successors, (52), 52 states have call predecessors, (52), 52 states have call successors, (52) [2022-10-15 17:48:12,460 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 521 states to 521 states and 649 transitions. [2022-10-15 17:48:12,461 INFO L78 Accepts]: Start accepts. Automaton has 521 states and 649 transitions. Word has length 15 [2022-10-15 17:48:12,461 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-15 17:48:12,461 INFO L495 AbstractCegarLoop]: Abstraction has 521 states and 649 transitions. [2022-10-15 17:48:12,461 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 17:48:12,461 INFO L276 IsEmpty]: Start isEmpty. Operand 521 states and 649 transitions. [2022-10-15 17:48:12,462 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2022-10-15 17:48:12,462 INFO L187 NwaCegarLoop]: Found error trace [2022-10-15 17:48:12,462 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-15 17:48:12,463 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2022-10-15 17:48:12,463 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr11REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [__CS_pthread_joinErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, __CS_pthread_joinErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, __CS_pthread_joinErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 220 more)] === [2022-10-15 17:48:12,463 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-15 17:48:12,463 INFO L85 PathProgramCache]: Analyzing trace with hash -1681725816, now seen corresponding path program 1 times [2022-10-15 17:48:12,464 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-15 17:48:12,464 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1189417235] [2022-10-15 17:48:12,464 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-15 17:48:12,464 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-15 17:48:12,530 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 17:48:13,142 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 17:48:13,142 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-15 17:48:13,143 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1189417235] [2022-10-15 17:48:13,143 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1189417235] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-15 17:48:13,143 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-15 17:48:13,143 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-10-15 17:48:13,143 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2057268507] [2022-10-15 17:48:13,143 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-15 17:48:13,144 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-10-15 17:48:13,144 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-15 17:48:13,145 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-10-15 17:48:13,145 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2022-10-15 17:48:13,145 INFO L87 Difference]: Start difference. First operand 521 states and 649 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 17:48:13,851 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-15 17:48:13,851 INFO L93 Difference]: Finished difference Result 534 states and 663 transitions. [2022-10-15 17:48:13,851 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-10-15 17:48:13,852 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 17:48:13,852 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-15 17:48:13,855 INFO L225 Difference]: With dead ends: 534 [2022-10-15 17:48:13,855 INFO L226 Difference]: Without dead ends: 534 [2022-10-15 17:48:13,856 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 17:48:13,856 INFO L413 NwaCegarLoop]: 467 mSDtfsCounter, 43 mSDsluCounter, 759 mSDsCounter, 0 mSdLazyCounter, 688 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 43 SdHoareTripleChecker+Valid, 1226 SdHoareTripleChecker+Invalid, 691 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 688 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-10-15 17:48:13,857 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [43 Valid, 1226 Invalid, 691 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 688 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-10-15 17:48:13,858 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 534 states. [2022-10-15 17:48:13,869 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 534 to 523. [2022-10-15 17:48:13,870 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 523 states, 287 states have (on average 1.9059233449477353) internal successors, (547), 465 states have internal predecessors, (547), 52 states have call successors, (52), 5 states have call predecessors, (52), 5 states have return successors, (52), 52 states have call predecessors, (52), 52 states have call successors, (52) [2022-10-15 17:48:13,873 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 523 states to 523 states and 651 transitions. [2022-10-15 17:48:13,873 INFO L78 Accepts]: Start accepts. Automaton has 523 states and 651 transitions. Word has length 15 [2022-10-15 17:48:13,873 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-15 17:48:13,873 INFO L495 AbstractCegarLoop]: Abstraction has 523 states and 651 transitions. [2022-10-15 17:48:13,874 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 17:48:13,874 INFO L276 IsEmpty]: Start isEmpty. Operand 523 states and 651 transitions. [2022-10-15 17:48:13,874 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2022-10-15 17:48:13,874 INFO L187 NwaCegarLoop]: Found error trace [2022-10-15 17:48:13,875 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 17:48:13,875 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2022-10-15 17:48:13,875 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr9REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [__CS_pthread_joinErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, __CS_pthread_joinErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, __CS_pthread_joinErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 220 more)] === [2022-10-15 17:48:13,875 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-15 17:48:13,876 INFO L85 PathProgramCache]: Analyzing trace with hash -1685518133, now seen corresponding path program 1 times [2022-10-15 17:48:13,876 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-15 17:48:13,876 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1474779899] [2022-10-15 17:48:13,876 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-15 17:48:13,876 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-15 17:48:13,930 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 17:48:15,055 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 17:48:15,056 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-15 17:48:15,056 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1474779899] [2022-10-15 17:48:15,056 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1474779899] provided 0 perfect and 1 imperfect interpolant sequences [2022-10-15 17:48:15,056 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1160432093] [2022-10-15 17:48:15,056 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-15 17:48:15,057 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-15 17:48:15,057 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-10-15 17:48:15,060 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 17:48:15,086 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 17:48:15,269 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 17:48:15,275 INFO L263 TraceCheckSpWp]: Trace formula consists of 446 conjuncts, 45 conjunts are in the unsatisfiable core [2022-10-15 17:48:15,285 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-10-15 17:48:15,453 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-10-15 17:48:15,457 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-10-15 17:48:15,459 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-10-15 17:48:15,461 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-10-15 17:48:15,465 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-10-15 17:48:15,467 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-10-15 17:48:15,470 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-10-15 17:48:15,471 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-10-15 17:48:15,473 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-10-15 17:48:15,475 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-10-15 17:48:15,477 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-10-15 17:48:15,479 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-10-15 17:48:15,480 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-10-15 17:48:15,553 INFO L356 Elim1Store]: treesize reduction 20, result has 48.7 percent of original size [2022-10-15 17:48:15,554 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 13 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 2 case distinctions, treesize of input 21 treesize of output 39 [2022-10-15 17:48:15,597 INFO L356 Elim1Store]: treesize reduction 48, result has 2.0 percent of original size [2022-10-15 17:48:15,598 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 73 treesize of output 65 [2022-10-15 17:48:15,927 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 17:48:15,927 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-10-15 17:48:16,126 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 17:48:16,127 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1160432093] provided 0 perfect and 2 imperfect interpolant sequences [2022-10-15 17:48:16,127 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-10-15 17:48:16,127 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 4, 4] total 12 [2022-10-15 17:48:16,129 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1892761823] [2022-10-15 17:48:16,130 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-10-15 17:48:16,130 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2022-10-15 17:48:16,130 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-15 17:48:16,131 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2022-10-15 17:48:16,131 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=109, Unknown=0, NotChecked=0, Total=156 [2022-10-15 17:48:16,131 INFO L87 Difference]: Start difference. First operand 523 states and 651 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 17:48:17,160 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-15 17:48:17,161 INFO L93 Difference]: Finished difference Result 534 states and 664 transitions. [2022-10-15 17:48:17,161 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-10-15 17:48:17,162 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 17:48:17,162 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-15 17:48:17,165 INFO L225 Difference]: With dead ends: 534 [2022-10-15 17:48:17,166 INFO L226 Difference]: Without dead ends: 534 [2022-10-15 17:48:17,166 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 35 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 39 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=61, Invalid=149, Unknown=0, NotChecked=0, Total=210 [2022-10-15 17:48:17,167 INFO L413 NwaCegarLoop]: 468 mSDtfsCounter, 10 mSDsluCounter, 1006 mSDsCounter, 0 mSdLazyCounter, 872 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10 SdHoareTripleChecker+Valid, 1474 SdHoareTripleChecker+Invalid, 887 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 872 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 13 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2022-10-15 17:48:17,167 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [10 Valid, 1474 Invalid, 887 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 872 Invalid, 0 Unknown, 13 Unchecked, 0.9s Time] [2022-10-15 17:48:17,169 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 534 states. [2022-10-15 17:48:17,206 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 534 to 533. [2022-10-15 17:48:17,207 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 533 states, 297 states have (on average 1.8855218855218856) internal successors, (560), 475 states have internal predecessors, (560), 52 states have call successors, (52), 5 states have call predecessors, (52), 5 states have return successors, (52), 52 states have call predecessors, (52), 52 states have call successors, (52) [2022-10-15 17:48:17,214 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 533 states to 533 states and 664 transitions. [2022-10-15 17:48:17,214 INFO L78 Accepts]: Start accepts. Automaton has 533 states and 664 transitions. Word has length 19 [2022-10-15 17:48:17,216 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-15 17:48:17,216 INFO L495 AbstractCegarLoop]: Abstraction has 533 states and 664 transitions. [2022-10-15 17:48:17,216 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 17:48:17,216 INFO L276 IsEmpty]: Start isEmpty. Operand 533 states and 664 transitions. [2022-10-15 17:48:17,217 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2022-10-15 17:48:17,217 INFO L187 NwaCegarLoop]: Found error trace [2022-10-15 17:48:17,217 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-15 17:48:17,262 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 17:48:17,431 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2022-10-15 17:48:17,432 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 220 more)] === [2022-10-15 17:48:17,433 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-15 17:48:17,434 INFO L85 PathProgramCache]: Analyzing trace with hash -580300314, now seen corresponding path program 1 times [2022-10-15 17:48:17,434 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-15 17:48:17,435 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1641351443] [2022-10-15 17:48:17,435 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-15 17:48:17,435 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-15 17:48:17,469 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 17:48:17,540 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-15 17:48:17,541 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-15 17:48:17,541 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1641351443] [2022-10-15 17:48:17,541 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1641351443] provided 0 perfect and 1 imperfect interpolant sequences [2022-10-15 17:48:17,541 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1745901869] [2022-10-15 17:48:17,541 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-15 17:48:17,541 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-15 17:48:17,542 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-10-15 17:48:17,543 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 17:48:17,567 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 17:48:17,723 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 17:48:17,727 INFO L263 TraceCheckSpWp]: Trace formula consists of 449 conjuncts, 3 conjunts are in the unsatisfiable core [2022-10-15 17:48:17,729 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-10-15 17:48:17,748 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-15 17:48:17,749 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-10-15 17:48:17,768 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-15 17:48:17,768 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1745901869] provided 0 perfect and 2 imperfect interpolant sequences [2022-10-15 17:48:17,768 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-10-15 17:48:17,768 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 6 [2022-10-15 17:48:17,769 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1622152332] [2022-10-15 17:48:17,769 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-10-15 17:48:17,769 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-10-15 17:48:17,770 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-15 17:48:17,770 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-10-15 17:48:17,770 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2022-10-15 17:48:17,770 INFO L87 Difference]: Start difference. First operand 533 states and 664 transitions. Second operand has 6 states, 6 states have (on average 6.0) internal successors, (36), 6 states have internal predecessors, (36), 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 17:48:17,836 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-15 17:48:17,836 INFO L93 Difference]: Finished difference Result 550 states and 679 transitions. [2022-10-15 17:48:17,837 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-10-15 17:48:17,837 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 6.0) internal successors, (36), 6 states have internal predecessors, (36), 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 17:48:17,837 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-15 17:48:17,840 INFO L225 Difference]: With dead ends: 550 [2022-10-15 17:48:17,841 INFO L226 Difference]: Without dead ends: 550 [2022-10-15 17:48:17,841 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 39 SyntacticMatches, 1 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2022-10-15 17:48:17,842 INFO L413 NwaCegarLoop]: 473 mSDtfsCounter, 22 mSDsluCounter, 942 mSDsCounter, 0 mSdLazyCounter, 33 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 22 SdHoareTripleChecker+Valid, 1415 SdHoareTripleChecker+Invalid, 35 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 33 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-10-15 17:48:17,842 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [22 Valid, 1415 Invalid, 35 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 33 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-10-15 17:48:17,844 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 550 states. [2022-10-15 17:48:17,856 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 550 to 546. [2022-10-15 17:48:17,858 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 546 states, 310 states have (on average 1.8548387096774193) internal successors, (575), 488 states have internal predecessors, (575), 52 states have call successors, (52), 5 states have call predecessors, (52), 5 states have return successors, (52), 52 states have call predecessors, (52), 52 states have call successors, (52) [2022-10-15 17:48:17,862 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 546 states to 546 states and 679 transitions. [2022-10-15 17:48:17,862 INFO L78 Accepts]: Start accepts. Automaton has 546 states and 679 transitions. Word has length 21 [2022-10-15 17:48:17,862 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-15 17:48:17,862 INFO L495 AbstractCegarLoop]: Abstraction has 546 states and 679 transitions. [2022-10-15 17:48:17,863 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 6.0) internal successors, (36), 6 states have internal predecessors, (36), 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 17:48:17,863 INFO L276 IsEmpty]: Start isEmpty. Operand 546 states and 679 transitions. [2022-10-15 17:48:17,864 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2022-10-15 17:48:17,864 INFO L187 NwaCegarLoop]: Found error trace [2022-10-15 17:48:17,864 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 17:48:17,915 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-10-15 17:48:18,077 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2022-10-15 17:48:18,077 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr11REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [__CS_pthread_joinErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, __CS_pthread_joinErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, __CS_pthread_joinErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 220 more)] === [2022-10-15 17:48:18,078 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-15 17:48:18,078 INFO L85 PathProgramCache]: Analyzing trace with hash -580252308, now seen corresponding path program 1 times [2022-10-15 17:48:18,078 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-15 17:48:18,078 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2097342179] [2022-10-15 17:48:18,078 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-15 17:48:18,079 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-15 17:48:18,125 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 17:48:18,890 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 17:48:18,890 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-15 17:48:18,890 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2097342179] [2022-10-15 17:48:18,890 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2097342179] provided 0 perfect and 1 imperfect interpolant sequences [2022-10-15 17:48:18,891 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1829073550] [2022-10-15 17:48:18,891 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-15 17:48:18,891 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-15 17:48:18,891 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-10-15 17:48:18,892 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 17:48:18,919 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 17:48:19,123 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 17:48:19,127 INFO L263 TraceCheckSpWp]: Trace formula consists of 463 conjuncts, 29 conjunts are in the unsatisfiable core [2022-10-15 17:48:19,132 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-10-15 17:48:19,223 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-10-15 17:48:19,224 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-10-15 17:48:19,225 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-10-15 17:48:19,227 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-10-15 17:48:19,228 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-10-15 17:48:19,230 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-10-15 17:48:19,234 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-10-15 17:48:19,236 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-10-15 17:48:19,304 INFO L356 Elim1Store]: treesize reduction 100, result has 28.6 percent of original size [2022-10-15 17:48:19,305 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 8 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 3 case distinctions, treesize of input 21 treesize of output 55 [2022-10-15 17:48:19,394 INFO L356 Elim1Store]: treesize reduction 32, result has 34.7 percent of original size [2022-10-15 17:48:19,397 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 1673 treesize of output 1641 [2022-10-15 17:48:20,159 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 17:48:20,159 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-10-15 17:48:20,380 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 17:48:20,380 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1829073550] provided 0 perfect and 2 imperfect interpolant sequences [2022-10-15 17:48:20,381 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-10-15 17:48:20,381 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 4, 4] total 13 [2022-10-15 17:48:20,381 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2051309972] [2022-10-15 17:48:20,381 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-10-15 17:48:20,382 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-10-15 17:48:20,382 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-15 17:48:20,382 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-10-15 17:48:20,382 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=125, Unknown=0, NotChecked=0, Total=182 [2022-10-15 17:48:20,383 INFO L87 Difference]: Start difference. First operand 546 states and 679 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 17:48:22,342 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-15 17:48:22,342 INFO L93 Difference]: Finished difference Result 900 states and 1061 transitions. [2022-10-15 17:48:22,342 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-10-15 17:48:22,342 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 17:48:22,343 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-15 17:48:22,348 INFO L225 Difference]: With dead ends: 900 [2022-10-15 17:48:22,348 INFO L226 Difference]: Without dead ends: 900 [2022-10-15 17:48:22,348 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 56 GetRequests, 35 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 115 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=172, Invalid=334, Unknown=0, NotChecked=0, Total=506 [2022-10-15 17:48:22,349 INFO L413 NwaCegarLoop]: 307 mSDtfsCounter, 409 mSDsluCounter, 1165 mSDsCounter, 0 mSdLazyCounter, 1599 mSolverCounterSat, 23 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 429 SdHoareTripleChecker+Valid, 1472 SdHoareTripleChecker+Invalid, 1622 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 23 IncrementalHoareTripleChecker+Valid, 1599 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2022-10-15 17:48:22,350 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [429 Valid, 1472 Invalid, 1622 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [23 Valid, 1599 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2022-10-15 17:48:22,351 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 900 states. [2022-10-15 17:48:22,365 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 900 to 572. [2022-10-15 17:48:22,366 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 572 states, 336 states have (on average 1.8154761904761905) internal successors, (610), 514 states have internal predecessors, (610), 52 states have call successors, (52), 5 states have call predecessors, (52), 5 states have return successors, (52), 52 states have call predecessors, (52), 52 states have call successors, (52) [2022-10-15 17:48:22,369 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 572 states to 572 states and 714 transitions. [2022-10-15 17:48:22,369 INFO L78 Accepts]: Start accepts. Automaton has 572 states and 714 transitions. Word has length 21 [2022-10-15 17:48:22,369 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-15 17:48:22,369 INFO L495 AbstractCegarLoop]: Abstraction has 572 states and 714 transitions. [2022-10-15 17:48:22,370 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 17:48:22,370 INFO L276 IsEmpty]: Start isEmpty. Operand 572 states and 714 transitions. [2022-10-15 17:48:22,371 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2022-10-15 17:48:22,371 INFO L187 NwaCegarLoop]: Found error trace [2022-10-15 17:48:22,371 INFO L195 NwaCegarLoop]: trace histogram [4, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-15 17:48:22,414 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2022-10-15 17:48:22,584 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-15 17:48:22,585 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr9REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [__CS_pthread_joinErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, __CS_pthread_joinErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, __CS_pthread_joinErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 220 more)] === [2022-10-15 17:48:22,585 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-15 17:48:22,586 INFO L85 PathProgramCache]: Analyzing trace with hash 14219155, now seen corresponding path program 2 times [2022-10-15 17:48:22,586 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-15 17:48:22,586 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1756222014] [2022-10-15 17:48:22,586 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-15 17:48:22,586 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-15 17:48:22,631 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 17:48:22,753 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 11 proven. 13 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-15 17:48:22,753 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-15 17:48:22,753 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1756222014] [2022-10-15 17:48:22,754 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1756222014] provided 0 perfect and 1 imperfect interpolant sequences [2022-10-15 17:48:22,754 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1065695185] [2022-10-15 17:48:22,754 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-10-15 17:48:22,754 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-15 17:48:22,754 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-10-15 17:48:22,756 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 17:48:22,765 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 17:48:23,239 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-10-15 17:48:23,239 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-10-15 17:48:23,244 INFO L263 TraceCheckSpWp]: Trace formula consists of 520 conjuncts, 5 conjunts are in the unsatisfiable core [2022-10-15 17:48:23,247 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-10-15 17:48:23,283 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 24 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-15 17:48:23,283 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-10-15 17:48:23,284 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1065695185] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-15 17:48:23,284 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-10-15 17:48:23,284 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [6] total 7 [2022-10-15 17:48:23,284 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [693804632] [2022-10-15 17:48:23,285 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-15 17:48:23,285 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-10-15 17:48:23,285 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-15 17:48:23,286 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-10-15 17:48:23,286 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2022-10-15 17:48:23,286 INFO L87 Difference]: Start difference. First operand 572 states and 714 transitions. Second operand has 6 states, 6 states have (on average 5.166666666666667) internal successors, (31), 6 states have internal predecessors, (31), 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 17:48:23,404 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-15 17:48:23,405 INFO L93 Difference]: Finished difference Result 575 states and 710 transitions. [2022-10-15 17:48:23,405 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-10-15 17:48:23,406 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 5.166666666666667) internal successors, (31), 6 states have internal predecessors, (31), 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 31 [2022-10-15 17:48:23,406 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-15 17:48:23,410 INFO L225 Difference]: With dead ends: 575 [2022-10-15 17:48:23,410 INFO L226 Difference]: Without dead ends: 575 [2022-10-15 17:48:23,410 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 31 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2022-10-15 17:48:23,411 INFO L413 NwaCegarLoop]: 485 mSDtfsCounter, 655 mSDsluCounter, 140 mSDsCounter, 0 mSdLazyCounter, 50 mSolverCounterSat, 24 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 678 SdHoareTripleChecker+Valid, 625 SdHoareTripleChecker+Invalid, 74 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 24 IncrementalHoareTripleChecker+Valid, 50 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-10-15 17:48:23,412 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [678 Valid, 625 Invalid, 74 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [24 Valid, 50 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-10-15 17:48:23,413 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 575 states. [2022-10-15 17:48:23,427 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 575 to 571. [2022-10-15 17:48:23,429 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 571 states, 335 states have (on average 1.808955223880597) internal successors, (606), 513 states have internal predecessors, (606), 52 states have call successors, (52), 5 states have call predecessors, (52), 5 states have return successors, (52), 52 states have call predecessors, (52), 52 states have call successors, (52) [2022-10-15 17:48:23,432 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 571 states to 571 states and 710 transitions. [2022-10-15 17:48:23,432 INFO L78 Accepts]: Start accepts. Automaton has 571 states and 710 transitions. Word has length 31 [2022-10-15 17:48:23,433 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-15 17:48:23,433 INFO L495 AbstractCegarLoop]: Abstraction has 571 states and 710 transitions. [2022-10-15 17:48:23,433 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 5.166666666666667) internal successors, (31), 6 states have internal predecessors, (31), 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 17:48:23,433 INFO L276 IsEmpty]: Start isEmpty. Operand 571 states and 710 transitions. [2022-10-15 17:48:23,434 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2022-10-15 17:48:23,434 INFO L187 NwaCegarLoop]: Found error trace [2022-10-15 17:48:23,435 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-15 17:48:23,481 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 17:48:23,649 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2022-10-15 17:48:23,649 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr13REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [__CS_pthread_joinErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, __CS_pthread_joinErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, __CS_pthread_joinErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 220 more)] === [2022-10-15 17:48:23,650 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-15 17:48:23,650 INFO L85 PathProgramCache]: Analyzing trace with hash 779660974, now seen corresponding path program 2 times [2022-10-15 17:48:23,650 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-15 17:48:23,651 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [922243845] [2022-10-15 17:48:23,651 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-15 17:48:23,651 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-15 17:48:23,696 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 17:48:23,802 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2022-10-15 17:48:23,802 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-15 17:48:23,802 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [922243845] [2022-10-15 17:48:23,803 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [922243845] provided 0 perfect and 1 imperfect interpolant sequences [2022-10-15 17:48:23,803 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [473457077] [2022-10-15 17:48:23,803 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-10-15 17:48:23,803 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-15 17:48:23,803 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-10-15 17:48:23,805 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 17:48:23,824 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 17:48:24,010 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2022-10-15 17:48:24,010 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-10-15 17:48:24,013 INFO L263 TraceCheckSpWp]: Trace formula consists of 334 conjuncts, 35 conjunts are in the unsatisfiable core [2022-10-15 17:48:24,017 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-10-15 17:48:24,043 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-10-15 17:48:24,045 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-10-15 17:48:24,046 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-10-15 17:48:24,049 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-10-15 17:48:24,051 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-10-15 17:48:24,052 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-10-15 17:48:24,056 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-10-15 17:48:24,058 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-10-15 17:48:24,062 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-10-15 17:48:24,065 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-10-15 17:48:24,067 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-10-15 17:48:24,136 INFO L356 Elim1Store]: treesize reduction 40, result has 48.1 percent of original size [2022-10-15 17:48:24,136 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 11 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 4 case distinctions, treesize of input 21 treesize of output 47 [2022-10-15 17:48:24,161 INFO L356 Elim1Store]: treesize reduction 48, result has 2.0 percent of original size [2022-10-15 17:48:24,162 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 65 treesize of output 57 [2022-10-15 17:48:24,476 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2022-10-15 17:48:24,476 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-10-15 17:48:24,476 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [473457077] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-15 17:48:24,476 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-10-15 17:48:24,477 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [4] total 5 [2022-10-15 17:48:24,478 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [269454918] [2022-10-15 17:48:24,478 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-15 17:48:24,480 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-10-15 17:48:24,480 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-15 17:48:24,480 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-10-15 17:48:24,481 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-10-15 17:48:24,481 INFO L87 Difference]: Start difference. First operand 571 states and 710 transitions. Second operand has 3 states, 2 states have (on average 10.5) internal successors, (21), 3 states have internal predecessors, (21), 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 17:48:24,490 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-15 17:48:24,490 INFO L93 Difference]: Finished difference Result 570 states and 709 transitions. [2022-10-15 17:48:24,491 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-10-15 17:48:24,491 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 10.5) internal successors, (21), 3 states have internal predecessors, (21), 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 17:48:24,492 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-15 17:48:24,495 INFO L225 Difference]: With dead ends: 570 [2022-10-15 17:48:24,496 INFO L226 Difference]: Without dead ends: 570 [2022-10-15 17:48:24,496 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 33 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-10-15 17:48:24,497 INFO L413 NwaCegarLoop]: 465 mSDtfsCounter, 0 mSDsluCounter, 246 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 711 SdHoareTripleChecker+Invalid, 219 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 219 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-10-15 17:48:24,497 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 711 Invalid, 219 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 219 Unchecked, 0.0s Time] [2022-10-15 17:48:24,499 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 570 states. [2022-10-15 17:48:24,513 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 570 to 570. [2022-10-15 17:48:24,514 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 570 states, 335 states have (on average 1.8059701492537314) internal successors, (605), 512 states have internal predecessors, (605), 52 states have call successors, (52), 5 states have call predecessors, (52), 5 states have return successors, (52), 52 states have call predecessors, (52), 52 states have call successors, (52) [2022-10-15 17:48:24,517 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 570 states to 570 states and 709 transitions. [2022-10-15 17:48:24,517 INFO L78 Accepts]: Start accepts. Automaton has 570 states and 709 transitions. Word has length 33 [2022-10-15 17:48:24,517 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-15 17:48:24,517 INFO L495 AbstractCegarLoop]: Abstraction has 570 states and 709 transitions. [2022-10-15 17:48:24,518 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 10.5) internal successors, (21), 3 states have internal predecessors, (21), 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 17:48:24,518 INFO L276 IsEmpty]: Start isEmpty. Operand 570 states and 709 transitions. [2022-10-15 17:48:24,521 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2022-10-15 17:48:24,521 INFO L187 NwaCegarLoop]: Found error trace [2022-10-15 17:48:24,521 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 17:48:24,567 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2022-10-15 17:48:24,738 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-15 17:48:24,739 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [__CS_pthread_joinErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, __CS_pthread_joinErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, __CS_pthread_joinErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 220 more)] === [2022-10-15 17:48:24,739 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-15 17:48:24,740 INFO L85 PathProgramCache]: Analyzing trace with hash 779660995, now seen corresponding path program 1 times [2022-10-15 17:48:24,740 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-15 17:48:24,740 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1955560561] [2022-10-15 17:48:24,741 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-15 17:48:24,741 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-15 17:48:24,801 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 17:48:25,623 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 17:48:25,623 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-15 17:48:25,623 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1955560561] [2022-10-15 17:48:25,623 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1955560561] provided 0 perfect and 1 imperfect interpolant sequences [2022-10-15 17:48:25,623 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [617967410] [2022-10-15 17:48:25,624 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-15 17:48:25,624 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-15 17:48:25,624 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-10-15 17:48:25,625 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 17:48:25,628 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 17:48:25,845 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 17:48:25,848 INFO L263 TraceCheckSpWp]: Trace formula consists of 525 conjuncts, 23 conjunts are in the unsatisfiable core [2022-10-15 17:48:25,864 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-10-15 17:48:25,903 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-10-15 17:48:25,904 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-10-15 17:48:25,905 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-10-15 17:48:25,906 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-10-15 17:48:25,907 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-10-15 17:48:25,908 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-10-15 17:48:25,966 INFO L356 Elim1Store]: treesize reduction 138, result has 22.5 percent of original size [2022-10-15 17:48:25,967 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 17:48:26,003 INFO L356 Elim1Store]: treesize reduction 24, result has 4.0 percent of original size [2022-10-15 17:48:26,004 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 809 treesize of output 787 [2022-10-15 17:48:26,401 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 17:48:26,401 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-10-15 17:48:26,615 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 17:48:26,616 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [617967410] provided 0 perfect and 2 imperfect interpolant sequences [2022-10-15 17:48:26,616 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-10-15 17:48:26,616 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 7 [2022-10-15 17:48:26,616 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1269204795] [2022-10-15 17:48:26,617 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-10-15 17:48:26,617 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-10-15 17:48:26,617 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-15 17:48:26,618 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-10-15 17:48:26,618 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2022-10-15 17:48:26,618 INFO L87 Difference]: Start difference. First operand 570 states and 709 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 17:48:28,069 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-15 17:48:28,069 INFO L93 Difference]: Finished difference Result 890 states and 1051 transitions. [2022-10-15 17:48:28,070 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-10-15 17:48:28,070 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 17:48:28,070 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-15 17:48:28,075 INFO L225 Difference]: With dead ends: 890 [2022-10-15 17:48:28,076 INFO L226 Difference]: Without dead ends: 890 [2022-10-15 17:48:28,076 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 67 GetRequests, 61 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2022-10-15 17:48:28,077 INFO L413 NwaCegarLoop]: 318 mSDtfsCounter, 358 mSDsluCounter, 1151 mSDsCounter, 0 mSdLazyCounter, 1512 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 378 SdHoareTripleChecker+Valid, 1469 SdHoareTripleChecker+Invalid, 1516 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 1512 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2022-10-15 17:48:28,077 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [378 Valid, 1469 Invalid, 1516 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 1512 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2022-10-15 17:48:28,079 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 890 states. [2022-10-15 17:48:28,091 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 890 to 582. [2022-10-15 17:48:28,093 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 582 states, 347 states have (on average 1.780979827089337) internal successors, (618), 524 states have internal predecessors, (618), 52 states have call successors, (52), 5 states have call predecessors, (52), 5 states have return successors, (52), 52 states have call predecessors, (52), 52 states have call successors, (52) [2022-10-15 17:48:28,096 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 582 states to 582 states and 722 transitions. [2022-10-15 17:48:28,096 INFO L78 Accepts]: Start accepts. Automaton has 582 states and 722 transitions. Word has length 33 [2022-10-15 17:48:28,096 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-15 17:48:28,097 INFO L495 AbstractCegarLoop]: Abstraction has 582 states and 722 transitions. [2022-10-15 17:48:28,097 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 17:48:28,097 INFO L276 IsEmpty]: Start isEmpty. Operand 582 states and 722 transitions. [2022-10-15 17:48:28,098 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2022-10-15 17:48:28,098 INFO L187 NwaCegarLoop]: Found error trace [2022-10-15 17:48:28,098 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 17:48:28,145 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2022-10-15 17:48:28,313 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-15 17:48:28,314 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [__CS_pthread_joinErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, __CS_pthread_joinErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, __CS_pthread_joinErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 220 more)] === [2022-10-15 17:48:28,315 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-15 17:48:28,315 INFO L85 PathProgramCache]: Analyzing trace with hash 1929908836, now seen corresponding path program 1 times [2022-10-15 17:48:28,315 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-15 17:48:28,316 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [315496436] [2022-10-15 17:48:28,316 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-15 17:48:28,316 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-15 17:48:28,370 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 17:48:28,722 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 17:48:28,722 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-15 17:48:28,723 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [315496436] [2022-10-15 17:48:28,723 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [315496436] provided 0 perfect and 1 imperfect interpolant sequences [2022-10-15 17:48:28,723 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [629360556] [2022-10-15 17:48:28,723 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-15 17:48:28,723 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-15 17:48:28,723 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-10-15 17:48:28,724 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-10-15 17:48:28,735 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2022-10-15 17:48:28,977 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 17:48:28,982 INFO L263 TraceCheckSpWp]: Trace formula consists of 543 conjuncts, 16 conjunts are in the unsatisfiable core [2022-10-15 17:48:28,986 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-10-15 17:48:29,027 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-10-15 17:48:29,028 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-10-15 17:48:29,029 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-10-15 17:48:29,114 INFO L356 Elim1Store]: treesize reduction 177, result has 23.7 percent of original size [2022-10-15 17:48:29,115 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 17:48:29,159 INFO L356 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2022-10-15 17:48:29,160 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 4781 treesize of output 4733 [2022-10-15 17:48:29,821 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 17:48:29,821 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-10-15 17:48:30,029 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 17:48:30,030 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [629360556] provided 0 perfect and 2 imperfect interpolant sequences [2022-10-15 17:48:30,030 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-10-15 17:48:30,030 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 7 [2022-10-15 17:48:30,031 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1004052502] [2022-10-15 17:48:30,031 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-10-15 17:48:30,031 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-10-15 17:48:30,032 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-15 17:48:30,032 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-10-15 17:48:30,032 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2022-10-15 17:48:30,033 INFO L87 Difference]: Start difference. First operand 582 states and 722 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 17:48:31,406 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-15 17:48:31,406 INFO L93 Difference]: Finished difference Result 891 states and 1052 transitions. [2022-10-15 17:48:31,406 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-10-15 17:48:31,407 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 17:48:31,407 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-15 17:48:31,413 INFO L225 Difference]: With dead ends: 891 [2022-10-15 17:48:31,413 INFO L226 Difference]: Without dead ends: 891 [2022-10-15 17:48:31,414 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 17:48:31,415 INFO L413 NwaCegarLoop]: 319 mSDtfsCounter, 347 mSDsluCounter, 1152 mSDsCounter, 0 mSdLazyCounter, 1513 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 367 SdHoareTripleChecker+Valid, 1471 SdHoareTripleChecker+Invalid, 1516 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 1513 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2022-10-15 17:48:31,416 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [367 Valid, 1471 Invalid, 1516 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 1513 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2022-10-15 17:48:31,419 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 891 states. [2022-10-15 17:48:31,451 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 891 to 584. [2022-10-15 17:48:31,453 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 584 states, 349 states have (on average 1.7736389684813754) internal successors, (619), 526 states have internal predecessors, (619), 52 states have call successors, (52), 5 states have call predecessors, (52), 5 states have return successors, (52), 52 states have call predecessors, (52), 52 states have call successors, (52) [2022-10-15 17:48:31,458 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 584 states to 584 states and 723 transitions. [2022-10-15 17:48:31,458 INFO L78 Accepts]: Start accepts. Automaton has 584 states and 723 transitions. Word has length 35 [2022-10-15 17:48:31,458 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-15 17:48:31,459 INFO L495 AbstractCegarLoop]: Abstraction has 584 states and 723 transitions. [2022-10-15 17:48:31,459 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 17:48:31,459 INFO L276 IsEmpty]: Start isEmpty. Operand 584 states and 723 transitions. [2022-10-15 17:48:31,462 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2022-10-15 17:48:31,462 INFO L187 NwaCegarLoop]: Found error trace [2022-10-15 17:48:31,462 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 17:48:31,498 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2022-10-15 17:48:31,677 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-15 17:48:31,678 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [__CS_pthread_joinErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, __CS_pthread_joinErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, __CS_pthread_joinErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 220 more)] === [2022-10-15 17:48:31,680 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-15 17:48:31,680 INFO L85 PathProgramCache]: Analyzing trace with hash -783478203, now seen corresponding path program 1 times [2022-10-15 17:48:31,680 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-15 17:48:31,681 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1368473998] [2022-10-15 17:48:31,681 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-15 17:48:31,681 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-15 17:48:31,743 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 17:48:32,064 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 17:48:32,065 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-15 17:48:32,065 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1368473998] [2022-10-15 17:48:32,065 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1368473998] provided 0 perfect and 1 imperfect interpolant sequences [2022-10-15 17:48:32,065 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2070184413] [2022-10-15 17:48:32,066 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-15 17:48:32,066 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-15 17:48:32,066 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-10-15 17:48:32,067 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-10-15 17:48:32,078 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2022-10-15 17:48:32,323 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 17:48:32,327 INFO L263 TraceCheckSpWp]: Trace formula consists of 561 conjuncts, 11 conjunts are in the unsatisfiable core [2022-10-15 17:48:32,330 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-10-15 17:48:32,358 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-10-15 17:48:32,464 INFO L356 Elim1Store]: treesize reduction 200, result has 25.1 percent of original size [2022-10-15 17:48:32,465 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 17:48:32,493 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 53494 treesize of output 53238 [2022-10-15 17:48:34,538 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 17:48:34,538 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-10-15 17:48:34,762 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 17:48:34,762 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2070184413] provided 0 perfect and 2 imperfect interpolant sequences [2022-10-15 17:48:34,763 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-10-15 17:48:34,763 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 7 [2022-10-15 17:48:34,763 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2035931483] [2022-10-15 17:48:34,763 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-10-15 17:48:34,763 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-10-15 17:48:34,764 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-15 17:48:34,764 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-10-15 17:48:34,764 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2022-10-15 17:48:34,764 INFO L87 Difference]: Start difference. First operand 584 states and 723 transitions. Second operand has 8 states, 7 states have (on average 10.428571428571429) internal successors, (73), 8 states have internal predecessors, (73), 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 17:48:35,664 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-15 17:48:35,667 INFO L93 Difference]: Finished difference Result 892 states and 1053 transitions. [2022-10-15 17:48:35,667 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-10-15 17:48:35,667 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 10.428571428571429) internal successors, (73), 8 states have internal predecessors, (73), 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 37 [2022-10-15 17:48:35,668 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-15 17:48:35,672 INFO L225 Difference]: With dead ends: 892 [2022-10-15 17:48:35,672 INFO L226 Difference]: Without dead ends: 892 [2022-10-15 17:48:35,673 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 75 GetRequests, 69 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 17:48:35,675 INFO L413 NwaCegarLoop]: 320 mSDtfsCounter, 339 mSDsluCounter, 484 mSDsCounter, 0 mSdLazyCounter, 737 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 359 SdHoareTripleChecker+Valid, 804 SdHoareTripleChecker+Invalid, 740 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 737 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2022-10-15 17:48:35,676 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [359 Valid, 804 Invalid, 740 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 737 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2022-10-15 17:48:35,678 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 892 states. [2022-10-15 17:48:35,696 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 892 to 586. [2022-10-15 17:48:35,698 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 586 states, 351 states have (on average 1.7663817663817665) internal successors, (620), 528 states have internal predecessors, (620), 52 states have call successors, (52), 5 states have call predecessors, (52), 5 states have return successors, (52), 52 states have call predecessors, (52), 52 states have call successors, (52) [2022-10-15 17:48:35,701 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 586 states to 586 states and 724 transitions. [2022-10-15 17:48:35,701 INFO L78 Accepts]: Start accepts. Automaton has 586 states and 724 transitions. Word has length 37 [2022-10-15 17:48:35,701 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-15 17:48:35,701 INFO L495 AbstractCegarLoop]: Abstraction has 586 states and 724 transitions. [2022-10-15 17:48:35,702 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 10.428571428571429) internal successors, (73), 8 states have internal predecessors, (73), 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 17:48:35,702 INFO L276 IsEmpty]: Start isEmpty. Operand 586 states and 724 transitions. [2022-10-15 17:48:35,702 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2022-10-15 17:48:35,702 INFO L187 NwaCegarLoop]: Found error trace [2022-10-15 17:48:35,703 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1] [2022-10-15 17:48:35,733 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2022-10-15 17:48:35,910 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable21 [2022-10-15 17:48:35,911 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr7REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [__CS_pthread_joinErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, __CS_pthread_joinErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, __CS_pthread_joinErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 220 more)] === [2022-10-15 17:48:35,912 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-15 17:48:35,912 INFO L85 PathProgramCache]: Analyzing trace with hash -1303273882, now seen corresponding path program 1 times [2022-10-15 17:48:35,913 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-15 17:48:35,913 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1564743736] [2022-10-15 17:48:35,913 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-15 17:48:35,913 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-15 17:48:35,965 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 17:48:36,235 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 1 proven. 6 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2022-10-15 17:48:36,236 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-15 17:48:36,236 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1564743736] [2022-10-15 17:48:36,236 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1564743736] provided 0 perfect and 1 imperfect interpolant sequences [2022-10-15 17:48:36,236 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1663607628] [2022-10-15 17:48:36,236 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-15 17:48:36,236 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-15 17:48:36,237 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-10-15 17:48:36,238 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-10-15 17:48:36,263 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2022-10-15 17:48:36,504 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 17:48:36,506 INFO L263 TraceCheckSpWp]: Trace formula consists of 579 conjuncts, 9 conjunts are in the unsatisfiable core [2022-10-15 17:48:36,510 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-10-15 17:48:36,629 INFO L356 Elim1Store]: treesize reduction 210, result has 26.6 percent of original size [2022-10-15 17:48:36,630 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 5 case distinctions, treesize of input 21 treesize of output 81 [2022-10-15 17:48:36,890 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2022-10-15 17:48:36,891 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-10-15 17:48:37,069 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2022-10-15 17:48:37,070 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1663607628] provided 0 perfect and 2 imperfect interpolant sequences [2022-10-15 17:48:37,070 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-10-15 17:48:37,070 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 3, 3] total 8 [2022-10-15 17:48:37,070 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1712121924] [2022-10-15 17:48:37,070 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-10-15 17:48:37,071 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-10-15 17:48:37,071 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-15 17:48:37,071 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-10-15 17:48:37,071 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2022-10-15 17:48:37,072 INFO L87 Difference]: Start difference. First operand 586 states and 724 transitions. Second operand has 9 states, 8 states have (on average 9.875) internal successors, (79), 9 states have internal predecessors, (79), 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 17:48:38,288 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-15 17:48:38,289 INFO L93 Difference]: Finished difference Result 669 states and 746 transitions. [2022-10-15 17:48:38,289 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-10-15 17:48:38,289 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 9.875) internal successors, (79), 9 states have internal predecessors, (79), 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 39 [2022-10-15 17:48:38,290 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-15 17:48:38,293 INFO L225 Difference]: With dead ends: 669 [2022-10-15 17:48:38,294 INFO L226 Difference]: Without dead ends: 669 [2022-10-15 17:48:38,294 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 83 GetRequests, 73 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=45, Invalid=87, Unknown=0, NotChecked=0, Total=132 [2022-10-15 17:48:38,295 INFO L413 NwaCegarLoop]: 319 mSDtfsCounter, 414 mSDsluCounter, 1087 mSDsCounter, 0 mSdLazyCounter, 1386 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 434 SdHoareTripleChecker+Valid, 1406 SdHoareTripleChecker+Invalid, 1400 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 1386 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2022-10-15 17:48:38,295 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [434 Valid, 1406 Invalid, 1400 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 1386 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2022-10-15 17:48:38,296 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 669 states. [2022-10-15 17:48:38,308 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 669 to 587. [2022-10-15 17:48:38,309 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 587 states, 354 states have (on average 1.7485875706214689) internal successors, (619), 528 states have internal predecessors, (619), 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 17:48:38,312 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 587 states to 587 states and 725 transitions. [2022-10-15 17:48:38,312 INFO L78 Accepts]: Start accepts. Automaton has 587 states and 725 transitions. Word has length 39 [2022-10-15 17:48:38,312 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-15 17:48:38,313 INFO L495 AbstractCegarLoop]: Abstraction has 587 states and 725 transitions. [2022-10-15 17:48:38,313 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 8 states have (on average 9.875) internal successors, (79), 9 states have internal predecessors, (79), 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 17:48:38,313 INFO L276 IsEmpty]: Start isEmpty. Operand 587 states and 725 transitions. [2022-10-15 17:48:38,313 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2022-10-15 17:48:38,316 INFO L187 NwaCegarLoop]: Found error trace [2022-10-15 17:48:38,316 INFO L195 NwaCegarLoop]: trace histogram [4, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1] [2022-10-15 17:48:38,351 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2022-10-15 17:48:38,531 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22,10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-15 17:48:38,532 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr9REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [__CS_pthread_joinErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, __CS_pthread_joinErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, __CS_pthread_joinErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 220 more)] === [2022-10-15 17:48:38,532 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-15 17:48:38,533 INFO L85 PathProgramCache]: Analyzing trace with hash 672215882, now seen corresponding path program 1 times [2022-10-15 17:48:38,533 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-15 17:48:38,533 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1008710935] [2022-10-15 17:48:38,534 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-15 17:48:38,534 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-15 17:48:38,618 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 17:48:40,096 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 0 proven. 23 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2022-10-15 17:48:40,097 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-15 17:48:40,097 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1008710935] [2022-10-15 17:48:40,097 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1008710935] provided 0 perfect and 1 imperfect interpolant sequences [2022-10-15 17:48:40,097 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [77493835] [2022-10-15 17:48:40,097 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-15 17:48:40,097 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-15 17:48:40,098 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-10-15 17:48:40,099 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-10-15 17:48:40,106 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2022-10-15 17:48:40,362 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 17:48:40,366 INFO L263 TraceCheckSpWp]: Trace formula consists of 598 conjuncts, 47 conjunts are in the unsatisfiable core [2022-10-15 17:48:40,369 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-10-15 17:48:40,393 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-10-15 17:48:40,394 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-10-15 17:48:40,400 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-10-15 17:48:40,402 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-10-15 17:48:40,403 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-10-15 17:48:40,405 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-10-15 17:48:40,406 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-10-15 17:48:40,408 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-10-15 17:48:40,410 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-10-15 17:48:40,411 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-10-15 17:48:40,413 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-10-15 17:48:40,415 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-10-15 17:48:40,417 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-10-15 17:48:40,419 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-10-15 17:48:40,420 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-10-15 17:48:40,424 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 17:48:40,447 INFO L356 Elim1Store]: treesize reduction 80, result has 1.2 percent of original size [2022-10-15 17:48:40,447 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 17:48:40,701 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2022-10-15 17:48:40,701 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-10-15 17:48:40,981 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2022-10-15 17:48:40,981 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [77493835] provided 0 perfect and 2 imperfect interpolant sequences [2022-10-15 17:48:40,982 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-10-15 17:48:40,982 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 4, 4] total 14 [2022-10-15 17:48:40,982 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [46207312] [2022-10-15 17:48:40,982 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-10-15 17:48:40,983 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2022-10-15 17:48:40,983 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-15 17:48:40,983 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2022-10-15 17:48:40,984 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=66, Invalid=144, Unknown=0, NotChecked=0, Total=210 [2022-10-15 17:48:40,984 INFO L87 Difference]: Start difference. First operand 587 states and 725 transitions. Second operand has 15 states, 14 states have (on average 6.5) internal successors, (91), 15 states have internal predecessors, (91), 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 17:48:42,822 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-15 17:48:42,823 INFO L93 Difference]: Finished difference Result 615 states and 751 transitions. [2022-10-15 17:48:42,823 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-10-15 17:48:42,823 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 14 states have (on average 6.5) internal successors, (91), 15 states have internal predecessors, (91), 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 42 [2022-10-15 17:48:42,823 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-15 17:48:42,826 INFO L225 Difference]: With dead ends: 615 [2022-10-15 17:48:42,826 INFO L226 Difference]: Without dead ends: 615 [2022-10-15 17:48:42,826 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 94 GetRequests, 77 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 50 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=106, Invalid=236, Unknown=0, NotChecked=0, Total=342 [2022-10-15 17:48:42,827 INFO L413 NwaCegarLoop]: 470 mSDtfsCounter, 83 mSDsluCounter, 2277 mSDsCounter, 0 mSdLazyCounter, 2058 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 83 SdHoareTripleChecker+Valid, 2747 SdHoareTripleChecker+Invalid, 2071 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 2058 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.7s IncrementalHoareTripleChecker+Time [2022-10-15 17:48:42,827 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [83 Valid, 2747 Invalid, 2071 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 2058 Invalid, 0 Unknown, 0 Unchecked, 1.7s Time] [2022-10-15 17:48:42,829 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 615 states. [2022-10-15 17:48:42,841 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 615 to 592. [2022-10-15 17:48:42,843 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 592 states, 359 states have (on average 1.732590529247911) internal successors, (622), 533 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 17:48:42,845 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 592 states to 592 states and 728 transitions. [2022-10-15 17:48:42,845 INFO L78 Accepts]: Start accepts. Automaton has 592 states and 728 transitions. Word has length 42 [2022-10-15 17:48:42,845 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-15 17:48:42,846 INFO L495 AbstractCegarLoop]: Abstraction has 592 states and 728 transitions. [2022-10-15 17:48:42,846 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 14 states have (on average 6.5) internal successors, (91), 15 states have internal predecessors, (91), 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 17:48:42,846 INFO L276 IsEmpty]: Start isEmpty. Operand 592 states and 728 transitions. [2022-10-15 17:48:42,847 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2022-10-15 17:48:42,847 INFO L187 NwaCegarLoop]: Found error trace [2022-10-15 17:48:42,847 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1] [2022-10-15 17:48:42,888 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2022-10-15 17:48:43,061 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable23 [2022-10-15 17:48:43,062 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr11REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [__CS_pthread_joinErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, __CS_pthread_joinErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, __CS_pthread_joinErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 220 more)] === [2022-10-15 17:48:43,062 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-15 17:48:43,063 INFO L85 PathProgramCache]: Analyzing trace with hash 1754371115, now seen corresponding path program 1 times [2022-10-15 17:48:43,063 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-15 17:48:43,063 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1609171121] [2022-10-15 17:48:43,064 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-15 17:48:43,064 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-15 17:48:43,136 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat