/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -s ../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-PN-SemanticLbe.epf -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -i ../../../trunk/examples/svcomp/weaver/parallel-simple-equiv.wvr.c -------------------------------------------------------------------------------- This is Ultimate 0.2.2-wip.dk.repeated-lipton-8d0d62b [2022-12-05 21:21:15,413 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-12-05 21:21:15,415 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-12-05 21:21:15,446 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-12-05 21:21:15,446 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-12-05 21:21:15,448 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-12-05 21:21:15,451 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-12-05 21:21:15,481 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-12-05 21:21:15,485 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-12-05 21:21:15,490 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-12-05 21:21:15,491 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-12-05 21:21:15,492 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-12-05 21:21:15,492 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-12-05 21:21:15,494 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-12-05 21:21:15,495 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-12-05 21:21:15,497 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-12-05 21:21:15,498 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-12-05 21:21:15,498 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-12-05 21:21:15,500 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-12-05 21:21:15,504 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-12-05 21:21:15,505 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-12-05 21:21:15,506 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-12-05 21:21:15,507 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-12-05 21:21:15,507 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-12-05 21:21:15,513 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-12-05 21:21:15,513 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-12-05 21:21:15,513 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-12-05 21:21:15,514 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-12-05 21:21:15,515 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-12-05 21:21:15,515 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-12-05 21:21:15,515 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-12-05 21:21:15,517 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-12-05 21:21:15,518 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-12-05 21:21:15,518 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-12-05 21:21:15,519 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-12-05 21:21:15,519 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-12-05 21:21:15,519 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-12-05 21:21:15,520 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-12-05 21:21:15,520 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-12-05 21:21:15,520 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-12-05 21:21:15,521 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-12-05 21:21:15,521 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-PN-SemanticLbe.epf [2022-12-05 21:21:15,544 INFO L113 SettingsManager]: Loading preferences was successful [2022-12-05 21:21:15,544 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-12-05 21:21:15,545 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-12-05 21:21:15,546 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-12-05 21:21:15,546 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-12-05 21:21:15,547 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-12-05 21:21:15,547 INFO L138 SettingsManager]: * Use SBE=true [2022-12-05 21:21:15,547 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-12-05 21:21:15,547 INFO L138 SettingsManager]: * sizeof long=4 [2022-12-05 21:21:15,547 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-12-05 21:21:15,548 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-12-05 21:21:15,548 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-12-05 21:21:15,548 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-12-05 21:21:15,548 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-12-05 21:21:15,548 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-12-05 21:21:15,548 INFO L138 SettingsManager]: * sizeof long double=12 [2022-12-05 21:21:15,548 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-12-05 21:21:15,548 INFO L138 SettingsManager]: * Use constant arrays=true [2022-12-05 21:21:15,548 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-12-05 21:21:15,549 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-12-05 21:21:15,549 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-12-05 21:21:15,549 INFO L138 SettingsManager]: * To the following directory=./dump/ [2022-12-05 21:21:15,549 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-12-05 21:21:15,549 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-05 21:21:15,549 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-12-05 21:21:15,549 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-12-05 21:21:15,549 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-12-05 21:21:15,549 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-12-05 21:21:15,549 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-12-05 21:21:15,550 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-12-05 21:21:15,550 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2022-12-05 21:21:15,789 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-12-05 21:21:15,802 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-12-05 21:21:15,804 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-12-05 21:21:15,805 INFO L271 PluginConnector]: Initializing CDTParser... [2022-12-05 21:21:15,805 INFO L275 PluginConnector]: CDTParser initialized [2022-12-05 21:21:15,806 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/weaver/parallel-simple-equiv.wvr.c [2022-12-05 21:21:16,919 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-12-05 21:21:17,066 INFO L351 CDTParser]: Found 1 translation units. [2022-12-05 21:21:17,066 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/weaver/parallel-simple-equiv.wvr.c [2022-12-05 21:21:17,071 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/2d684fef4/acbd3376c6e5470eb0a66807a39ce14b/FLAGe38de3502 [2022-12-05 21:21:17,082 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/2d684fef4/acbd3376c6e5470eb0a66807a39ce14b [2022-12-05 21:21:17,083 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-12-05 21:21:17,084 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2022-12-05 21:21:17,085 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-12-05 21:21:17,085 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-12-05 21:21:17,087 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-12-05 21:21:17,087 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 05.12 09:21:17" (1/1) ... [2022-12-05 21:21:17,088 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2d49cc87 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.12 09:21:17, skipping insertion in model container [2022-12-05 21:21:17,088 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 05.12 09:21:17" (1/1) ... [2022-12-05 21:21:17,092 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-12-05 21:21:17,105 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-12-05 21:21:17,206 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-05 21:21:17,208 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-05 21:21:17,210 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-05 21:21:17,211 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-05 21:21:17,222 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/weaver/parallel-simple-equiv.wvr.c[2212,2225] [2022-12-05 21:21:17,226 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-05 21:21:17,235 INFO L203 MainTranslator]: Completed pre-run [2022-12-05 21:21:17,247 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-05 21:21:17,248 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-05 21:21:17,248 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-05 21:21:17,248 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-05 21:21:17,259 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/weaver/parallel-simple-equiv.wvr.c[2212,2225] [2022-12-05 21:21:17,264 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-05 21:21:17,275 INFO L208 MainTranslator]: Completed translation [2022-12-05 21:21:17,276 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.12 09:21:17 WrapperNode [2022-12-05 21:21:17,276 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-12-05 21:21:17,277 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-12-05 21:21:17,277 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-12-05 21:21:17,277 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-12-05 21:21:17,282 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.12 09:21:17" (1/1) ... [2022-12-05 21:21:17,288 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.12 09:21:17" (1/1) ... [2022-12-05 21:21:17,307 INFO L138 Inliner]: procedures = 22, calls = 30, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 71 [2022-12-05 21:21:17,307 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-12-05 21:21:17,308 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-12-05 21:21:17,308 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-12-05 21:21:17,308 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-12-05 21:21:17,314 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.12 09:21:17" (1/1) ... [2022-12-05 21:21:17,314 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.12 09:21:17" (1/1) ... [2022-12-05 21:21:17,322 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.12 09:21:17" (1/1) ... [2022-12-05 21:21:17,323 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.12 09:21:17" (1/1) ... [2022-12-05 21:21:17,332 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.12 09:21:17" (1/1) ... [2022-12-05 21:21:17,333 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.12 09:21:17" (1/1) ... [2022-12-05 21:21:17,334 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.12 09:21:17" (1/1) ... [2022-12-05 21:21:17,334 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.12 09:21:17" (1/1) ... [2022-12-05 21:21:17,335 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-12-05 21:21:17,336 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-12-05 21:21:17,336 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-12-05 21:21:17,336 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-12-05 21:21:17,337 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.12 09:21:17" (1/1) ... [2022-12-05 21:21:17,340 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-05 21:21:17,349 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-12-05 21:21:17,359 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) [2022-12-05 21:21:17,368 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 [2022-12-05 21:21:17,395 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-12-05 21:21:17,395 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2022-12-05 21:21:17,396 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2022-12-05 21:21:17,396 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2022-12-05 21:21:17,396 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2022-12-05 21:21:17,396 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2022-12-05 21:21:17,396 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2022-12-05 21:21:17,396 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-12-05 21:21:17,397 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-12-05 21:21:17,397 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-12-05 21:21:17,397 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2022-12-05 21:21:17,397 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2022-12-05 21:21:17,397 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-12-05 21:21:17,397 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-12-05 21:21:17,398 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-12-05 21:21:17,398 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-12-05 21:21:17,399 WARN L210 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2022-12-05 21:21:17,511 INFO L236 CfgBuilder]: Building ICFG [2022-12-05 21:21:17,513 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2022-12-05 21:21:17,679 INFO L277 CfgBuilder]: Performing block encoding [2022-12-05 21:21:17,695 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-12-05 21:21:17,696 INFO L302 CfgBuilder]: Removed 0 assume(true) statements. [2022-12-05 21:21:17,697 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 05.12 09:21:17 BoogieIcfgContainer [2022-12-05 21:21:17,697 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-12-05 21:21:17,699 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-12-05 21:21:17,699 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-12-05 21:21:17,701 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-12-05 21:21:17,703 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 05.12 09:21:17" (1/3) ... [2022-12-05 21:21:17,703 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6c599006 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 05.12 09:21:17, skipping insertion in model container [2022-12-05 21:21:17,704 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.12 09:21:17" (2/3) ... [2022-12-05 21:21:17,704 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6c599006 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 05.12 09:21:17, skipping insertion in model container [2022-12-05 21:21:17,704 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 05.12 09:21:17" (3/3) ... [2022-12-05 21:21:17,705 INFO L112 eAbstractionObserver]: Analyzing ICFG parallel-simple-equiv.wvr.c [2022-12-05 21:21:17,717 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-12-05 21:21:17,718 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-12-05 21:21:17,718 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-12-05 21:21:17,769 INFO L144 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2022-12-05 21:21:17,793 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 95 places, 87 transitions, 198 flow [2022-12-05 21:21:17,847 INFO L130 PetriNetUnfolder]: 2/84 cut-off events. [2022-12-05 21:21:17,847 INFO L131 PetriNetUnfolder]: For 3/3 co-relation queries the response was YES. [2022-12-05 21:21:17,850 INFO L83 FinitePrefix]: Finished finitePrefix Result has 97 conditions, 84 events. 2/84 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 2. Compared 24 event pairs, 0 based on Foata normal form. 0/81 useless extension candidates. Maximal degree in co-relation 52. Up to 2 conditions per place. [2022-12-05 21:21:17,850 INFO L82 GeneralOperation]: Start removeDead. Operand has 95 places, 87 transitions, 198 flow [2022-12-05 21:21:17,853 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 82 places, 74 transitions, 166 flow [2022-12-05 21:21:17,854 INFO L195 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2022-12-05 21:21:17,868 INFO L167 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 82 places, 74 transitions, 166 flow [2022-12-05 21:21:17,871 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 82 places, 74 transitions, 166 flow [2022-12-05 21:21:17,887 INFO L130 PetriNetUnfolder]: 2/74 cut-off events. [2022-12-05 21:21:17,887 INFO L131 PetriNetUnfolder]: For 3/3 co-relation queries the response was YES. [2022-12-05 21:21:17,888 INFO L83 FinitePrefix]: Finished finitePrefix Result has 87 conditions, 74 events. 2/74 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 2. Compared 23 event pairs, 0 based on Foata normal form. 0/72 useless extension candidates. Maximal degree in co-relation 52. Up to 2 conditions per place. [2022-12-05 21:21:17,889 INFO L184 LiptonReduction]: Starting Lipton reduction on Petri net that has 82 places, 74 transitions, 166 flow [2022-12-05 21:21:17,889 INFO L188 LiptonReduction]: Number of co-enabled transitions 360 [2022-12-05 21:21:20,385 INFO L203 LiptonReduction]: Total number of compositions: 58 [2022-12-05 21:21:20,396 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-12-05 21:21:20,401 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=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@222da438, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, Conditionality=CONDITIONAL_DISJUNCTIVE, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-12-05 21:21:20,401 INFO L358 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2022-12-05 21:21:20,404 INFO L130 PetriNetUnfolder]: 0/15 cut-off events. [2022-12-05 21:21:20,404 INFO L131 PetriNetUnfolder]: For 3/3 co-relation queries the response was YES. [2022-12-05 21:21:20,405 INFO L205 CegarLoopForPetriNet]: Found error trace [2022-12-05 21:21:20,405 INFO L213 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-05 21:21:20,405 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-12-05 21:21:20,409 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-05 21:21:20,409 INFO L85 PathProgramCache]: Analyzing trace with hash -991814671, now seen corresponding path program 1 times [2022-12-05 21:21:20,415 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-05 21:21:20,416 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1302536425] [2022-12-05 21:21:20,416 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-05 21:21:20,416 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-05 21:21:20,549 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-05 21:21:20,941 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-05 21:21:20,941 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-05 21:21:20,942 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1302536425] [2022-12-05 21:21:20,942 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1302536425] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-05 21:21:20,942 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-05 21:21:20,942 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-12-05 21:21:20,943 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1881487876] [2022-12-05 21:21:20,944 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-05 21:21:20,949 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-12-05 21:21:20,949 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-05 21:21:20,962 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-12-05 21:21:20,962 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-12-05 21:21:20,963 INFO L490 CegarLoopForPetriNet]: Number of universal loopers: 0 out of 16 [2022-12-05 21:21:20,964 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 26 places, 16 transitions, 50 flow. Second operand has 5 states, 4 states have (on average 4.0) internal successors, (16), 4 states have internal predecessors, (16), 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) [2022-12-05 21:21:20,964 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-05 21:21:20,964 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 0 of 16 [2022-12-05 21:21:20,965 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-05 21:21:21,090 INFO L130 PetriNetUnfolder]: 40/96 cut-off events. [2022-12-05 21:21:21,091 INFO L131 PetriNetUnfolder]: For 21/21 co-relation queries the response was YES. [2022-12-05 21:21:21,092 INFO L83 FinitePrefix]: Finished finitePrefix Result has 222 conditions, 96 events. 40/96 cut-off events. For 21/21 co-relation queries the response was YES. Maximal size of possible extension queue 10. Compared 245 event pairs, 13 based on Foata normal form. 1/97 useless extension candidates. Maximal degree in co-relation 168. Up to 67 conditions per place. [2022-12-05 21:21:21,093 INFO L137 encePairwiseOnDemand]: 11/16 looper letters, 20 selfloop transitions, 3 changer transitions 14/37 dead transitions. [2022-12-05 21:21:21,093 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 30 places, 37 transitions, 184 flow [2022-12-05 21:21:21,094 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-12-05 21:21:21,096 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-12-05 21:21:21,100 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 38 transitions. [2022-12-05 21:21:21,102 INFO L535 CegarLoopForPetriNet]: DFA transition density 0.475 [2022-12-05 21:21:21,104 INFO L175 Difference]: Start difference. First operand has 26 places, 16 transitions, 50 flow. Second operand 5 states and 38 transitions. [2022-12-05 21:21:21,105 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 30 places, 37 transitions, 184 flow [2022-12-05 21:21:21,107 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 24 places, 37 transitions, 160 flow, removed 0 selfloop flow, removed 6 redundant places. [2022-12-05 21:21:21,110 INFO L231 Difference]: Finished difference. Result has 27 places, 18 transitions, 67 flow [2022-12-05 21:21:21,111 INFO L276 CegarLoopForPetriNet]: {PETRI_ALPHABET=16, PETRI_DIFFERENCE_MINUEND_FLOW=38, PETRI_DIFFERENCE_MINUEND_PLACES=20, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=16, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=13, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=67, PETRI_PLACES=27, PETRI_TRANSITIONS=18} [2022-12-05 21:21:21,116 INFO L294 CegarLoopForPetriNet]: 26 programPoint places, 1 predicate places. [2022-12-05 21:21:21,116 INFO L495 AbstractCegarLoop]: Abstraction has has 27 places, 18 transitions, 67 flow [2022-12-05 21:21:21,116 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 4.0) internal successors, (16), 4 states have internal predecessors, (16), 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) [2022-12-05 21:21:21,116 INFO L205 CegarLoopForPetriNet]: Found error trace [2022-12-05 21:21:21,116 INFO L213 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-05 21:21:21,117 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-12-05 21:21:21,117 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-12-05 21:21:21,118 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-05 21:21:21,118 INFO L85 PathProgramCache]: Analyzing trace with hash 937613143, now seen corresponding path program 2 times [2022-12-05 21:21:21,118 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-05 21:21:21,118 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1009395830] [2022-12-05 21:21:21,118 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-05 21:21:21,119 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-05 21:21:21,176 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-05 21:21:21,334 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-05 21:21:21,335 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-05 21:21:21,335 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1009395830] [2022-12-05 21:21:21,335 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1009395830] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-05 21:21:21,335 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-05 21:21:21,335 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-12-05 21:21:21,335 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [737517880] [2022-12-05 21:21:21,335 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-05 21:21:21,336 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-12-05 21:21:21,336 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-05 21:21:21,337 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-12-05 21:21:21,337 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-12-05 21:21:21,337 INFO L490 CegarLoopForPetriNet]: Number of universal loopers: 0 out of 16 [2022-12-05 21:21:21,337 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 27 places, 18 transitions, 67 flow. Second operand has 5 states, 4 states have (on average 4.0) internal successors, (16), 4 states have internal predecessors, (16), 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) [2022-12-05 21:21:21,337 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-05 21:21:21,337 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 0 of 16 [2022-12-05 21:21:21,337 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-05 21:21:21,429 INFO L130 PetriNetUnfolder]: 31/79 cut-off events. [2022-12-05 21:21:21,429 INFO L131 PetriNetUnfolder]: For 70/70 co-relation queries the response was YES. [2022-12-05 21:21:21,429 INFO L83 FinitePrefix]: Finished finitePrefix Result has 253 conditions, 79 events. 31/79 cut-off events. For 70/70 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 197 event pairs, 1 based on Foata normal form. 1/80 useless extension candidates. Maximal degree in co-relation 107. Up to 40 conditions per place. [2022-12-05 21:21:21,430 INFO L137 encePairwiseOnDemand]: 11/16 looper letters, 22 selfloop transitions, 4 changer transitions 15/41 dead transitions. [2022-12-05 21:21:21,430 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 29 places, 41 transitions, 218 flow [2022-12-05 21:21:21,430 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-12-05 21:21:21,430 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-12-05 21:21:21,431 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 42 transitions. [2022-12-05 21:21:21,431 INFO L535 CegarLoopForPetriNet]: DFA transition density 0.525 [2022-12-05 21:21:21,431 INFO L175 Difference]: Start difference. First operand has 27 places, 18 transitions, 67 flow. Second operand 5 states and 42 transitions. [2022-12-05 21:21:21,431 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 29 places, 41 transitions, 218 flow [2022-12-05 21:21:21,432 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 26 places, 41 transitions, 197 flow, removed 9 selfloop flow, removed 3 redundant places. [2022-12-05 21:21:21,432 INFO L231 Difference]: Finished difference. Result has 28 places, 18 transitions, 74 flow [2022-12-05 21:21:21,433 INFO L276 CegarLoopForPetriNet]: {PETRI_ALPHABET=16, PETRI_DIFFERENCE_MINUEND_FLOW=54, PETRI_DIFFERENCE_MINUEND_PLACES=22, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=18, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=14, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=74, PETRI_PLACES=28, PETRI_TRANSITIONS=18} [2022-12-05 21:21:21,433 INFO L294 CegarLoopForPetriNet]: 26 programPoint places, 2 predicate places. [2022-12-05 21:21:21,433 INFO L495 AbstractCegarLoop]: Abstraction has has 28 places, 18 transitions, 74 flow [2022-12-05 21:21:21,433 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 4.0) internal successors, (16), 4 states have internal predecessors, (16), 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) [2022-12-05 21:21:21,433 INFO L205 CegarLoopForPetriNet]: Found error trace [2022-12-05 21:21:21,433 INFO L213 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-05 21:21:21,434 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-12-05 21:21:21,434 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-12-05 21:21:21,434 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-05 21:21:21,434 INFO L85 PathProgramCache]: Analyzing trace with hash -404368381, now seen corresponding path program 3 times [2022-12-05 21:21:21,434 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-05 21:21:21,434 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [808341111] [2022-12-05 21:21:21,434 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-05 21:21:21,435 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-05 21:21:21,453 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-05 21:21:21,622 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-05 21:21:21,622 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-05 21:21:21,625 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [808341111] [2022-12-05 21:21:21,625 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [808341111] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-05 21:21:21,625 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-05 21:21:21,625 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-12-05 21:21:21,625 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [574869042] [2022-12-05 21:21:21,626 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-05 21:21:21,626 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-12-05 21:21:21,626 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-05 21:21:21,627 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-12-05 21:21:21,627 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-12-05 21:21:21,627 INFO L490 CegarLoopForPetriNet]: Number of universal loopers: 0 out of 16 [2022-12-05 21:21:21,627 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 28 places, 18 transitions, 74 flow. Second operand has 5 states, 4 states have (on average 4.0) internal successors, (16), 4 states have internal predecessors, (16), 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) [2022-12-05 21:21:21,627 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-05 21:21:21,627 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 0 of 16 [2022-12-05 21:21:21,627 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-05 21:21:21,712 INFO L130 PetriNetUnfolder]: 17/49 cut-off events. [2022-12-05 21:21:21,712 INFO L131 PetriNetUnfolder]: For 61/61 co-relation queries the response was YES. [2022-12-05 21:21:21,713 INFO L83 FinitePrefix]: Finished finitePrefix Result has 172 conditions, 49 events. 17/49 cut-off events. For 61/61 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 94 event pairs, 1 based on Foata normal form. 1/50 useless extension candidates. Maximal degree in co-relation 64. Up to 23 conditions per place. [2022-12-05 21:21:21,713 INFO L137 encePairwiseOnDemand]: 11/16 looper letters, 0 selfloop transitions, 0 changer transitions 27/27 dead transitions. [2022-12-05 21:21:21,713 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 30 places, 27 transitions, 148 flow [2022-12-05 21:21:21,714 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-12-05 21:21:21,714 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-12-05 21:21:21,715 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 28 transitions. [2022-12-05 21:21:21,715 INFO L535 CegarLoopForPetriNet]: DFA transition density 0.35 [2022-12-05 21:21:21,715 INFO L175 Difference]: Start difference. First operand has 28 places, 18 transitions, 74 flow. Second operand 5 states and 28 transitions. [2022-12-05 21:21:21,715 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 30 places, 27 transitions, 148 flow [2022-12-05 21:21:21,716 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 26 places, 27 transitions, 136 flow, removed 1 selfloop flow, removed 4 redundant places. [2022-12-05 21:21:21,716 INFO L231 Difference]: Finished difference. Result has 26 places, 0 transitions, 0 flow [2022-12-05 21:21:21,716 INFO L276 CegarLoopForPetriNet]: {PETRI_ALPHABET=16, PETRI_DIFFERENCE_MINUEND_FLOW=58, PETRI_DIFFERENCE_MINUEND_PLACES=22, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=17, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=17, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=0, PETRI_PLACES=26, PETRI_TRANSITIONS=0} [2022-12-05 21:21:21,717 INFO L294 CegarLoopForPetriNet]: 26 programPoint places, 0 predicate places. [2022-12-05 21:21:21,717 INFO L495 AbstractCegarLoop]: Abstraction has has 26 places, 0 transitions, 0 flow [2022-12-05 21:21:21,717 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 4.0) internal successors, (16), 4 states have internal predecessors, (16), 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) [2022-12-05 21:21:21,719 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (3 of 4 remaining) [2022-12-05 21:21:21,720 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (2 of 4 remaining) [2022-12-05 21:21:21,720 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 4 remaining) [2022-12-05 21:21:21,720 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 4 remaining) [2022-12-05 21:21:21,720 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-12-05 21:21:21,720 INFO L458 BasicCegarLoop]: Path program histogram: [3] [2022-12-05 21:21:21,723 INFO L228 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2022-12-05 21:21:21,723 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2022-12-05 21:21:21,726 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 05.12 09:21:21 BasicIcfg [2022-12-05 21:21:21,726 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-12-05 21:21:21,726 INFO L158 Benchmark]: Toolchain (without parser) took 4641.83ms. Allocated memory was 184.5MB in the beginning and 238.0MB in the end (delta: 53.5MB). Free memory was 149.7MB in the beginning and 203.0MB in the end (delta: -53.3MB). Peak memory consumption was 1.2MB. Max. memory is 8.0GB. [2022-12-05 21:21:21,726 INFO L158 Benchmark]: CDTParser took 0.13ms. Allocated memory is still 184.5MB. Free memory was 162.1MB in the beginning and 162.0MB in the end (delta: 67.0kB). There was no memory consumed. Max. memory is 8.0GB. [2022-12-05 21:21:21,727 INFO L158 Benchmark]: CACSL2BoogieTranslator took 190.96ms. Allocated memory is still 184.5MB. Free memory was 149.7MB in the beginning and 138.6MB in the end (delta: 11.0MB). Peak memory consumption was 10.5MB. Max. memory is 8.0GB. [2022-12-05 21:21:21,727 INFO L158 Benchmark]: Boogie Procedure Inliner took 30.62ms. Allocated memory is still 184.5MB. Free memory was 138.6MB in the beginning and 137.0MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. [2022-12-05 21:21:21,727 INFO L158 Benchmark]: Boogie Preprocessor took 27.52ms. Allocated memory is still 184.5MB. Free memory was 137.0MB in the beginning and 135.5MB in the end (delta: 1.5MB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. [2022-12-05 21:21:21,728 INFO L158 Benchmark]: RCFGBuilder took 361.22ms. Allocated memory is still 184.5MB. Free memory was 135.5MB in the beginning and 121.3MB in the end (delta: 14.2MB). Peak memory consumption was 14.7MB. Max. memory is 8.0GB. [2022-12-05 21:21:21,728 INFO L158 Benchmark]: TraceAbstraction took 4027.17ms. Allocated memory was 184.5MB in the beginning and 238.0MB in the end (delta: 53.5MB). Free memory was 120.8MB in the beginning and 203.0MB in the end (delta: -82.1MB). There was no memory consumed. Max. memory is 8.0GB. [2022-12-05 21:21:21,729 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.13ms. Allocated memory is still 184.5MB. Free memory was 162.1MB in the beginning and 162.0MB in the end (delta: 67.0kB). There was no memory consumed. Max. memory is 8.0GB. * CACSL2BoogieTranslator took 190.96ms. Allocated memory is still 184.5MB. Free memory was 149.7MB in the beginning and 138.6MB in the end (delta: 11.0MB). Peak memory consumption was 10.5MB. Max. memory is 8.0GB. * Boogie Procedure Inliner took 30.62ms. Allocated memory is still 184.5MB. Free memory was 138.6MB in the beginning and 137.0MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. * Boogie Preprocessor took 27.52ms. Allocated memory is still 184.5MB. Free memory was 137.0MB in the beginning and 135.5MB in the end (delta: 1.5MB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. * RCFGBuilder took 361.22ms. Allocated memory is still 184.5MB. Free memory was 135.5MB in the beginning and 121.3MB in the end (delta: 14.2MB). Peak memory consumption was 14.7MB. Max. memory is 8.0GB. * TraceAbstraction took 4027.17ms. Allocated memory was 184.5MB in the beginning and 238.0MB in the end (delta: 53.5MB). Free memory was 120.8MB in the beginning and 203.0MB in the end (delta: -82.1MB). There was no memory consumed. Max. memory is 8.0GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 2.5s, 82 PlacesBefore, 26 PlacesAfterwards, 74 TransitionsBefore, 16 TransitionsAfterwards, 360 CoEnabledTransitionPairs, 2 FixpointIterations, 0 TrivialSequentialCompositions, 0 ConcurrentSequentialCompositions, 35 TrivialYvCompositions, 21 ConcurrentYvCompositions, 2 ChoiceCompositions, 58 TotalNumberOfCompositions, Independence Relation Statistics: ConditionTransformingIndependenceRelation.Independence Queries: [ total: 162, independent: 162, independent conditional: 162, independent unconditional: 0, dependent: 0, dependent conditional: 0, dependent unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , ConditionTransformingIndependenceRelation.Statistics on underlying relation: DisjunctiveConditionalIndependenceRelation.Independence Queries: [ total: 162, independent: 162, independent conditional: 0, independent unconditional: 162, dependent: 0, dependent conditional: 0, dependent unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , DisjunctiveConditionalIndependenceRelation.Statistics on underlying relation: SemanticConditionEliminator.Independence Queries: [ total: 162, independent: 162, independent conditional: 0, independent unconditional: 162, dependent: 0, dependent conditional: 0, dependent unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticConditionEliminator.Statistics on underlying relation: CachedIndependenceRelation.Independence Queries: [ total: 162, independent: 162, independent conditional: 0, independent unconditional: 162, dependent: 0, dependent conditional: 0, dependent unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: UnionIndependenceRelation.Independence Queries: [ total: 162, independent: 162, independent conditional: 0, independent unconditional: 162, dependent: 0, dependent conditional: 0, dependent unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , UnionIndependenceRelation.Statistics on underlying relations: [ SyntacticIndependenceRelation.Independence Queries: [ total: 162, independent: 160, independent conditional: 0, independent unconditional: 160, dependent: 2, dependent conditional: 0, dependent unconditional: 2, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Independence Queries: [ total: 2, independent: 2, independent conditional: 0, independent unconditional: 2, dependent: 0, dependent conditional: 0, dependent unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Query Time [ms]: [ total: 4, independent: 4, independent conditional: 0, independent unconditional: 4, dependent: 0, dependent conditional: 0, dependent unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] ], Cache Queries: [ total: 162, independent: 0, independent conditional: 0, independent unconditional: 0, dependent: 0, dependent conditional: 0, dependent unconditional: 0, unknown: 162, unknown conditional: 0, unknown unconditional: 162] , Statistics on independence cache: Total cache size (in pairs): 240, Positive cache size: 240, Positive conditional cache size: 0, Positive unconditional cache size: 240, Negative cache size: 0, Negative conditional cache size: 0, Negative unconditional cache size: 0, Unknown cache size: 0, Unknown conditional cache size: 0, Unknown unconditional cache size: 0, Eliminated conditions: 0, Maximal queried relation: -1 - PositiveResult [Line: 82]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 7 procedures, 104 locations, 4 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 0.0s, RemoveRedundantFlowTime: 0.0s, RemoveRedundantFlowUnfoldingTime: 0.0s, BackfoldingTime: 0.0s, BackfoldingUnfoldingTime: 0.0s, FlowIncreaseByBackfolding: 0, BasicCegarLoop: OverallTime: 3.9s, OverallIterations: 3, TraceHistogramMax: 1, PathProgramHistogramMax: 3, EmptinessCheckTime: 0.0s, AutomataDifference: 0.3s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 2.6s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 28 SdHoareTripleChecker+Valid, 0.2s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 28 mSDsluCounter, 0 SdHoareTripleChecker+Invalid, 0.2s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 0 mSDsCounter, 6 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 284 IncrementalHoareTripleChecker+Invalid, 290 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 6 mSolverCounterUnsat, 0 mSDtfsCounter, 284 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 12 GetRequests, 0 SyntacticMatches, 3 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=74occurred in iteration=2, InterpolantAutomatonStates: 15, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.7s InterpolantComputationTime, 48 NumberOfCodeBlocks, 48 NumberOfCodeBlocksAsserted, 3 NumberOfCheckSat, 45 ConstructedInterpolants, 0 QuantifiedInterpolants, 1064 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 3 InterpolantComputations, 3 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2022-12-05 21:21:21,749 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request...