./Ultimate.py --spec ../../../trunk/examples/svcomp/properties/unreach-call.prp --file ../../../trunk/examples/svcomp/weaver/spaghetti.wvr.c --full-output --witness-type correctness_witness --witnessparser.only.consider.loop.invariants false --validate ./goblint.2023-12-19_14-39-08.files/SV-COMP24_unreach-call/spaghetti.wvr.yml/witness.yml --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 80b1b132 Calling Ultimate with: /root/.sdkman/candidates/java/current/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReachWitnessValidation.xml -i ../../../trunk/examples/svcomp/weaver/spaghetti.wvr.c ./goblint.2023-12-19_14-39-08.files/SV-COMP24_unreach-call/spaghetti.wvr.yml/witness.yml -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --traceabstraction.compute.hoare.annotation.of.negated.interpolant.automaton,.abstraction.and.cfg false --witnessparser.only.consider.loop.invariants false --- Real Ultimate output --- This is Ultimate 0.2.4-?-80b1b13-m [2024-01-31 17:19:58,558 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-01-31 17:19:58,626 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-01-31 17:19:58,633 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-01-31 17:19:58,634 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-01-31 17:19:58,654 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-01-31 17:19:58,657 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-01-31 17:19:58,658 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-01-31 17:19:58,658 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-01-31 17:19:58,662 INFO L153 SettingsManager]: * Use memory slicer=true [2024-01-31 17:19:58,663 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-01-31 17:19:58,663 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-01-31 17:19:58,663 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-01-31 17:19:58,664 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-01-31 17:19:58,665 INFO L153 SettingsManager]: * Use SBE=true [2024-01-31 17:19:58,665 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-01-31 17:19:58,665 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-01-31 17:19:58,665 INFO L153 SettingsManager]: * sizeof long=4 [2024-01-31 17:19:58,665 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-01-31 17:19:58,666 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-01-31 17:19:58,666 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-01-31 17:19:58,666 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-01-31 17:19:58,666 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-01-31 17:19:58,666 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-01-31 17:19:58,667 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-01-31 17:19:58,667 INFO L153 SettingsManager]: * sizeof long double=12 [2024-01-31 17:19:58,667 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-01-31 17:19:58,667 INFO L153 SettingsManager]: * Use constant arrays=true [2024-01-31 17:19:58,668 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-01-31 17:19:58,668 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-01-31 17:19:58,669 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-01-31 17:19:58,669 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-01-31 17:19:58,669 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-01-31 17:19:58,669 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-01-31 17:19:58,669 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-01-31 17:19:58,670 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-01-31 17:19:58,670 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-01-31 17:19:58,670 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-01-31 17:19:58,670 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-01-31 17:19:58,670 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-01-31 17:19:58,670 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2024-01-31 17:19:58,671 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-01-31 17:19:58,671 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-01-31 17:19:58,671 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessparser: Only consider loop invariants -> false [2024-01-31 17:19:58,885 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-01-31 17:19:58,899 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-01-31 17:19:58,901 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-01-31 17:19:58,902 INFO L270 PluginConnector]: Initializing Witness Parser... [2024-01-31 17:19:58,903 INFO L274 PluginConnector]: Witness Parser initialized [2024-01-31 17:19:58,904 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/./goblint.2023-12-19_14-39-08.files/SV-COMP24_unreach-call/spaghetti.wvr.yml/witness.yml [2024-01-31 17:19:59,074 INFO L270 PluginConnector]: Initializing CDTParser... [2024-01-31 17:19:59,074 INFO L274 PluginConnector]: CDTParser initialized [2024-01-31 17:19:59,074 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/weaver/spaghetti.wvr.c [2024-01-31 17:20:00,178 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-01-31 17:20:00,362 INFO L384 CDTParser]: Found 1 translation units. [2024-01-31 17:20:00,362 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/weaver/spaghetti.wvr.c [2024-01-31 17:20:00,372 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/63712ef1e/e679500e8ecc453fa93f985394faa51b/FLAGe1511230c [2024-01-31 17:20:00,393 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/63712ef1e/e679500e8ecc453fa93f985394faa51b [2024-01-31 17:20:00,394 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-01-31 17:20:00,396 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2024-01-31 17:20:00,397 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-01-31 17:20:00,397 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-01-31 17:20:00,401 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-01-31 17:20:00,401 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 31.01 05:19:59" (1/2) ... [2024-01-31 17:20:00,403 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@60658cb0 and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 31.01 05:20:00, skipping insertion in model container [2024-01-31 17:20:00,404 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 31.01 05:19:59" (1/2) ... [2024-01-31 17:20:00,405 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@c65cf58 and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 31.01 05:20:00, skipping insertion in model container [2024-01-31 17:20:00,405 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 31.01 05:20:00" (2/2) ... [2024-01-31 17:20:00,405 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@60658cb0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 05:20:00, skipping insertion in model container [2024-01-31 17:20:00,406 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 31.01 05:20:00" (2/2) ... [2024-01-31 17:20:00,406 INFO L83 nessWitnessExtractor]: Extracting all invariants from correctness witness [2024-01-31 17:20:00,439 INFO L93 nessWitnessExtractor]: Witness did not contain any usable entries. [2024-01-31 17:20:00,464 INFO L179 MainTranslator]: Built tables and reachable declarations [2024-01-31 17:20:00,613 WARN L239 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/weaver/spaghetti.wvr.c[3273,3286] [2024-01-31 17:20:00,617 INFO L209 PostProcessor]: Analyzing one entry point: main [2024-01-31 17:20:00,627 INFO L204 MainTranslator]: Completed pre-run [2024-01-31 17:20:00,642 WARN L239 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/weaver/spaghetti.wvr.c[3273,3286] [2024-01-31 17:20:00,643 INFO L209 PostProcessor]: Analyzing one entry point: main [2024-01-31 17:20:00,654 INFO L208 MainTranslator]: Completed translation [2024-01-31 17:20:00,655 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 05:20:00 WrapperNode [2024-01-31 17:20:00,655 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-01-31 17:20:00,656 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-01-31 17:20:00,656 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-01-31 17:20:00,656 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-01-31 17:20:00,661 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 05:20:00" (1/1) ... [2024-01-31 17:20:00,667 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 05:20:00" (1/1) ... [2024-01-31 17:20:00,686 INFO L138 Inliner]: procedures = 23, calls = 59, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 79 [2024-01-31 17:20:00,686 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-01-31 17:20:00,687 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-01-31 17:20:00,687 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-01-31 17:20:00,687 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-01-31 17:20:00,695 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 05:20:00" (1/1) ... [2024-01-31 17:20:00,695 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 05:20:00" (1/1) ... [2024-01-31 17:20:00,697 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 05:20:00" (1/1) ... [2024-01-31 17:20:00,709 INFO L175 MemorySlicer]: Split 10 memory accesses to 5 slices as follows [2, 2, 2, 2, 2]. 20 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2, 0, 0, 0, 0]. The 4 writes are split as follows [0, 1, 1, 1, 1]. [2024-01-31 17:20:00,709 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 05:20:00" (1/1) ... [2024-01-31 17:20:00,710 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 05:20:00" (1/1) ... [2024-01-31 17:20:00,717 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 05:20:00" (1/1) ... [2024-01-31 17:20:00,720 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 05:20:00" (1/1) ... [2024-01-31 17:20:00,721 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 05:20:00" (1/1) ... [2024-01-31 17:20:00,722 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 05:20:00" (1/1) ... [2024-01-31 17:20:00,724 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-01-31 17:20:00,724 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-01-31 17:20:00,724 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-01-31 17:20:00,725 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-01-31 17:20:00,725 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 05:20:00" (1/1) ... [2024-01-31 17:20:00,729 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-01-31 17:20:00,740 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-01-31 17:20:00,755 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-01-31 17:20:00,771 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-01-31 17:20:00,794 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-01-31 17:20:00,794 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2024-01-31 17:20:00,794 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2024-01-31 17:20:00,795 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2024-01-31 17:20:00,795 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2024-01-31 17:20:00,795 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2024-01-31 17:20:00,795 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2024-01-31 17:20:00,795 INFO L130 BoogieDeclarations]: Found specification of procedure thread4 [2024-01-31 17:20:00,795 INFO L138 BoogieDeclarations]: Found implementation of procedure thread4 [2024-01-31 17:20:00,795 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-01-31 17:20:00,796 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-01-31 17:20:00,796 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2024-01-31 17:20:00,796 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#3 [2024-01-31 17:20:00,796 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#4 [2024-01-31 17:20:00,796 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2024-01-31 17:20:00,796 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-01-31 17:20:00,796 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2024-01-31 17:20:00,797 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#2 [2024-01-31 17:20:00,797 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#3 [2024-01-31 17:20:00,797 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#4 [2024-01-31 17:20:00,797 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2024-01-31 17:20:00,797 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2024-01-31 17:20:00,797 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-01-31 17:20:00,798 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-01-31 17:20:00,798 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2024-01-31 17:20:00,798 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2024-01-31 17:20:00,798 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#2 [2024-01-31 17:20:00,798 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#3 [2024-01-31 17:20:00,798 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#4 [2024-01-31 17:20:00,798 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2024-01-31 17:20:00,800 WARN L214 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2024-01-31 17:20:00,883 INFO L244 CfgBuilder]: Building ICFG [2024-01-31 17:20:00,885 INFO L270 CfgBuilder]: Building CFG for each procedure with an implementation [2024-01-31 17:20:01,024 INFO L289 CfgBuilder]: Ommited future-live optimization because the input is a concurrent program. [2024-01-31 17:20:01,024 INFO L293 CfgBuilder]: Performing block encoding [2024-01-31 17:20:01,125 INFO L315 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-01-31 17:20:01,125 INFO L320 CfgBuilder]: Removed 4 assume(true) statements. [2024-01-31 17:20:01,126 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 31.01 05:20:01 BoogieIcfgContainer [2024-01-31 17:20:01,126 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-01-31 17:20:01,136 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-01-31 17:20:01,137 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-01-31 17:20:01,140 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-01-31 17:20:01,140 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 31.01 05:19:59" (1/4) ... [2024-01-31 17:20:01,141 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6f78fb84 and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CORRECTNESS_WITNESS 31.01 05:20:01, skipping insertion in model container [2024-01-31 17:20:01,141 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 31.01 05:20:00" (2/4) ... [2024-01-31 17:20:01,141 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6f78fb84 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 31.01 05:20:01, skipping insertion in model container [2024-01-31 17:20:01,142 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 05:20:00" (3/4) ... [2024-01-31 17:20:01,142 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6f78fb84 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 31.01 05:20:01, skipping insertion in model container [2024-01-31 17:20:01,143 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 31.01 05:20:01" (4/4) ... [2024-01-31 17:20:01,144 INFO L112 eAbstractionObserver]: Analyzing ICFG spaghetti.wvr.c [2024-01-31 17:20:01,163 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-01-31 17:20:01,164 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-01-31 17:20:01,164 INFO L518 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-01-31 17:20:01,210 INFO L144 ThreadInstanceAdder]: Constructed 4 joinOtherThreadTransitions. [2024-01-31 17:20:01,254 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 66 places, 61 transitions, 150 flow [2024-01-31 17:20:01,305 INFO L124 PetriNetUnfolderBase]: 8/57 cut-off events. [2024-01-31 17:20:01,305 INFO L125 PetriNetUnfolderBase]: For 4/4 co-relation queries the response was YES. [2024-01-31 17:20:01,312 INFO L83 FinitePrefix]: Finished finitePrefix Result has 74 conditions, 57 events. 8/57 cut-off events. For 4/4 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 131 event pairs, 0 based on Foata normal form. 0/48 useless extension candidates. Maximal degree in co-relation 51. Up to 2 conditions per place. [2024-01-31 17:20:01,312 INFO L82 GeneralOperation]: Start removeDead. Operand has 66 places, 61 transitions, 150 flow [2024-01-31 17:20:01,315 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 61 places, 56 transitions, 136 flow [2024-01-31 17:20:01,329 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-01-31 17:20:01,336 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=LoopHeads, 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;@4c4ee4a2, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-01-31 17:20:01,336 INFO L358 AbstractCegarLoop]: Starting to check reachability of 5 error locations. [2024-01-31 17:20:01,352 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-01-31 17:20:01,355 INFO L124 PetriNetUnfolderBase]: 8/55 cut-off events. [2024-01-31 17:20:01,355 INFO L125 PetriNetUnfolderBase]: For 4/4 co-relation queries the response was YES. [2024-01-31 17:20:01,355 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-31 17:20:01,356 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-01-31 17:20:01,356 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 2 more)] === [2024-01-31 17:20:01,360 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-31 17:20:01,361 INFO L85 PathProgramCache]: Analyzing trace with hash 1067597777, now seen corresponding path program 1 times [2024-01-31 17:20:01,368 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-31 17:20:01,369 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [121845182] [2024-01-31 17:20:01,369 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-31 17:20:01,369 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-31 17:20:01,452 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-31 17:20:01,621 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-31 17:20:01,622 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-31 17:20:01,622 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [121845182] [2024-01-31 17:20:01,623 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [121845182] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-31 17:20:01,623 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-31 17:20:01,623 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-01-31 17:20:01,625 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [447146236] [2024-01-31 17:20:01,625 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-31 17:20:01,633 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-01-31 17:20:01,637 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-31 17:20:01,657 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-01-31 17:20:01,658 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-01-31 17:20:01,660 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 25 out of 61 [2024-01-31 17:20:01,662 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 61 places, 56 transitions, 136 flow. Second operand has 2 states, 2 states have (on average 37.5) internal successors, (75), 2 states have internal predecessors, (75), 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) [2024-01-31 17:20:01,663 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-31 17:20:01,663 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 25 of 61 [2024-01-31 17:20:01,664 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-31 17:20:02,233 INFO L124 PetriNetUnfolderBase]: 4024/6317 cut-off events. [2024-01-31 17:20:02,233 INFO L125 PetriNetUnfolderBase]: For 162/162 co-relation queries the response was YES. [2024-01-31 17:20:02,248 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11864 conditions, 6317 events. 4024/6317 cut-off events. For 162/162 co-relation queries the response was YES. Maximal size of possible extension queue 393. Compared 42319 event pairs, 3057 based on Foata normal form. 1370/5918 useless extension candidates. Maximal degree in co-relation 10294. Up to 5185 conditions per place. [2024-01-31 17:20:02,275 INFO L140 encePairwiseOnDemand]: 57/61 looper letters, 31 selfloop transitions, 0 changer transitions 0/52 dead transitions. [2024-01-31 17:20:02,276 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 62 places, 52 transitions, 190 flow [2024-01-31 17:20:02,277 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-01-31 17:20:02,278 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2024-01-31 17:20:02,283 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 85 transitions. [2024-01-31 17:20:02,285 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6967213114754098 [2024-01-31 17:20:02,286 INFO L175 Difference]: Start difference. First operand has 61 places, 56 transitions, 136 flow. Second operand 2 states and 85 transitions. [2024-01-31 17:20:02,287 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 62 places, 52 transitions, 190 flow [2024-01-31 17:20:02,302 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 54 places, 52 transitions, 174 flow, removed 0 selfloop flow, removed 8 redundant places. [2024-01-31 17:20:02,307 INFO L231 Difference]: Finished difference. Result has 54 places, 52 transitions, 112 flow [2024-01-31 17:20:02,308 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=61, PETRI_DIFFERENCE_MINUEND_FLOW=112, PETRI_DIFFERENCE_MINUEND_PLACES=53, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=52, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=52, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=112, PETRI_PLACES=54, PETRI_TRANSITIONS=52} [2024-01-31 17:20:02,312 INFO L281 CegarLoopForPetriNet]: 61 programPoint places, -7 predicate places. [2024-01-31 17:20:02,312 INFO L495 AbstractCegarLoop]: Abstraction has has 54 places, 52 transitions, 112 flow [2024-01-31 17:20:02,313 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 37.5) internal successors, (75), 2 states have internal predecessors, (75), 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) [2024-01-31 17:20:02,313 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-31 17:20:02,313 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-01-31 17:20:02,313 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-01-31 17:20:02,314 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 2 more)] === [2024-01-31 17:20:02,314 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-31 17:20:02,314 INFO L85 PathProgramCache]: Analyzing trace with hash 2070224299, now seen corresponding path program 1 times [2024-01-31 17:20:02,314 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-31 17:20:02,314 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [318154566] [2024-01-31 17:20:02,314 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-31 17:20:02,314 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-31 17:20:02,413 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-31 17:20:02,602 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-31 17:20:02,602 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-31 17:20:02,602 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [318154566] [2024-01-31 17:20:02,603 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [318154566] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-31 17:20:02,603 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-31 17:20:02,603 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-01-31 17:20:02,603 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1141988109] [2024-01-31 17:20:02,604 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-31 17:20:02,605 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-01-31 17:20:02,606 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-31 17:20:02,606 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-01-31 17:20:02,606 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-01-31 17:20:02,633 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 19 out of 61 [2024-01-31 17:20:02,633 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 54 places, 52 transitions, 112 flow. Second operand has 4 states, 4 states have (on average 26.25) internal successors, (105), 4 states have internal predecessors, (105), 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) [2024-01-31 17:20:02,634 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-31 17:20:02,634 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 19 of 61 [2024-01-31 17:20:02,634 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-31 17:20:03,804 INFO L124 PetriNetUnfolderBase]: 16090/21999 cut-off events. [2024-01-31 17:20:03,804 INFO L125 PetriNetUnfolderBase]: For 192/192 co-relation queries the response was YES. [2024-01-31 17:20:03,830 INFO L83 FinitePrefix]: Finished finitePrefix Result has 43702 conditions, 21999 events. 16090/21999 cut-off events. For 192/192 co-relation queries the response was YES. Maximal size of possible extension queue 1400. Compared 139007 event pairs, 5040 based on Foata normal form. 1/17518 useless extension candidates. Maximal degree in co-relation 43699. Up to 8634 conditions per place. [2024-01-31 17:20:03,898 INFO L140 encePairwiseOnDemand]: 52/61 looper letters, 82 selfloop transitions, 10 changer transitions 1/108 dead transitions. [2024-01-31 17:20:03,899 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 57 places, 108 transitions, 418 flow [2024-01-31 17:20:03,901 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-01-31 17:20:03,902 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-01-31 17:20:03,904 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 170 transitions. [2024-01-31 17:20:03,905 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6967213114754098 [2024-01-31 17:20:03,909 INFO L175 Difference]: Start difference. First operand has 54 places, 52 transitions, 112 flow. Second operand 4 states and 170 transitions. [2024-01-31 17:20:03,909 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 57 places, 108 transitions, 418 flow [2024-01-31 17:20:03,910 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 57 places, 108 transitions, 418 flow, removed 0 selfloop flow, removed 0 redundant places. [2024-01-31 17:20:03,913 INFO L231 Difference]: Finished difference. Result has 60 places, 62 transitions, 190 flow [2024-01-31 17:20:03,913 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=61, PETRI_DIFFERENCE_MINUEND_FLOW=112, PETRI_DIFFERENCE_MINUEND_PLACES=54, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=52, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=44, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=190, PETRI_PLACES=60, PETRI_TRANSITIONS=62} [2024-01-31 17:20:03,913 INFO L281 CegarLoopForPetriNet]: 61 programPoint places, -1 predicate places. [2024-01-31 17:20:03,914 INFO L495 AbstractCegarLoop]: Abstraction has has 60 places, 62 transitions, 190 flow [2024-01-31 17:20:03,914 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 26.25) internal successors, (105), 4 states have internal predecessors, (105), 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) [2024-01-31 17:20:03,914 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-31 17:20:03,914 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-01-31 17:20:03,914 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-01-31 17:20:03,914 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 2 more)] === [2024-01-31 17:20:03,915 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-31 17:20:03,915 INFO L85 PathProgramCache]: Analyzing trace with hash 1685209187, now seen corresponding path program 2 times [2024-01-31 17:20:03,915 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-31 17:20:03,915 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1951728549] [2024-01-31 17:20:03,916 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-31 17:20:03,916 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-31 17:20:03,960 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-31 17:20:04,053 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-31 17:20:04,054 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-31 17:20:04,054 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1951728549] [2024-01-31 17:20:04,054 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1951728549] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-31 17:20:04,054 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-31 17:20:04,054 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-01-31 17:20:04,054 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [339063301] [2024-01-31 17:20:04,054 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-31 17:20:04,055 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-01-31 17:20:04,055 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-31 17:20:04,055 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-01-31 17:20:04,055 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-01-31 17:20:04,072 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 19 out of 61 [2024-01-31 17:20:04,072 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 60 places, 62 transitions, 190 flow. Second operand has 4 states, 4 states have (on average 26.25) internal successors, (105), 4 states have internal predecessors, (105), 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) [2024-01-31 17:20:04,072 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-31 17:20:04,072 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 19 of 61 [2024-01-31 17:20:04,072 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-31 17:20:05,527 INFO L124 PetriNetUnfolderBase]: 19480/27096 cut-off events. [2024-01-31 17:20:05,528 INFO L125 PetriNetUnfolderBase]: For 9353/9353 co-relation queries the response was YES. [2024-01-31 17:20:05,570 INFO L83 FinitePrefix]: Finished finitePrefix Result has 63044 conditions, 27096 events. 19480/27096 cut-off events. For 9353/9353 co-relation queries the response was YES. Maximal size of possible extension queue 1693. Compared 177375 event pairs, 6452 based on Foata normal form. 1/21956 useless extension candidates. Maximal degree in co-relation 63038. Up to 11826 conditions per place. [2024-01-31 17:20:05,586 INFO L140 encePairwiseOnDemand]: 52/61 looper letters, 0 selfloop transitions, 0 changer transitions 124/124 dead transitions. [2024-01-31 17:20:05,586 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 61 places, 124 transitions, 608 flow [2024-01-31 17:20:05,587 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-01-31 17:20:05,587 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-01-31 17:20:05,590 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 169 transitions. [2024-01-31 17:20:05,590 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6926229508196722 [2024-01-31 17:20:05,590 INFO L175 Difference]: Start difference. First operand has 60 places, 62 transitions, 190 flow. Second operand 4 states and 169 transitions. [2024-01-31 17:20:05,590 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 61 places, 124 transitions, 608 flow [2024-01-31 17:20:05,595 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 61 places, 124 transitions, 608 flow, removed 0 selfloop flow, removed 0 redundant places. [2024-01-31 17:20:05,596 INFO L231 Difference]: Finished difference. Result has 61 places, 0 transitions, 0 flow [2024-01-31 17:20:05,596 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=61, PETRI_DIFFERENCE_MINUEND_FLOW=184, PETRI_DIFFERENCE_MINUEND_PLACES=58, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=60, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=60, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=0, PETRI_PLACES=61, PETRI_TRANSITIONS=0} [2024-01-31 17:20:05,597 INFO L281 CegarLoopForPetriNet]: 61 programPoint places, 0 predicate places. [2024-01-31 17:20:05,597 INFO L495 AbstractCegarLoop]: Abstraction has has 61 places, 0 transitions, 0 flow [2024-01-31 17:20:05,598 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 26.25) internal successors, (105), 4 states have internal predecessors, (105), 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) [2024-01-31 17:20:05,600 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (4 of 5 remaining) [2024-01-31 17:20:05,600 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (3 of 5 remaining) [2024-01-31 17:20:05,600 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (2 of 5 remaining) [2024-01-31 17:20:05,601 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 5 remaining) [2024-01-31 17:20:05,603 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr3INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 5 remaining) [2024-01-31 17:20:05,603 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-01-31 17:20:05,604 INFO L445 BasicCegarLoop]: Path program histogram: [2, 1] [2024-01-31 17:20:05,608 INFO L229 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2024-01-31 17:20:05,608 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2024-01-31 17:20:05,613 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 31.01 05:20:05 BasicIcfg [2024-01-31 17:20:05,614 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2024-01-31 17:20:05,614 INFO L158 Benchmark]: Toolchain (without parser) took 5218.53ms. Allocated memory was 167.8MB in the beginning and 805.3MB in the end (delta: 637.5MB). Free memory was 138.5MB in the beginning and 441.5MB in the end (delta: -303.0MB). Peak memory consumption was 453.2MB. Max. memory is 16.1GB. [2024-01-31 17:20:05,617 INFO L158 Benchmark]: Witness Parser took 0.16ms. Allocated memory is still 130.0MB. Free memory is still 88.0MB. There was no memory consumed. Max. memory is 16.1GB. [2024-01-31 17:20:05,617 INFO L158 Benchmark]: CDTParser took 0.13ms. Allocated memory is still 130.0MB. Free memory is still 99.7MB. There was no memory consumed. Max. memory is 16.1GB. [2024-01-31 17:20:05,617 INFO L158 Benchmark]: CACSL2BoogieTranslator took 258.19ms. Allocated memory is still 167.8MB. Free memory was 138.5MB in the beginning and 125.0MB in the end (delta: 13.4MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. [2024-01-31 17:20:05,619 INFO L158 Benchmark]: Boogie Procedure Inliner took 30.87ms. Allocated memory is still 167.8MB. Free memory was 125.0MB in the beginning and 122.9MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2024-01-31 17:20:05,619 INFO L158 Benchmark]: Boogie Preprocessor took 36.90ms. Allocated memory is still 167.8MB. Free memory was 122.9MB in the beginning and 120.8MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2024-01-31 17:20:05,620 INFO L158 Benchmark]: RCFGBuilder took 401.52ms. Allocated memory is still 167.8MB. Free memory was 120.8MB in the beginning and 93.6MB in the end (delta: 27.3MB). Peak memory consumption was 27.3MB. Max. memory is 16.1GB. [2024-01-31 17:20:05,620 INFO L158 Benchmark]: TraceAbstraction took 4477.36ms. Allocated memory was 167.8MB in the beginning and 805.3MB in the end (delta: 637.5MB). Free memory was 92.3MB in the beginning and 441.5MB in the end (delta: -349.1MB). Peak memory consumption was 407.1MB. Max. memory is 16.1GB. [2024-01-31 17:20:05,624 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * Witness Parser took 0.16ms. Allocated memory is still 130.0MB. Free memory is still 88.0MB. There was no memory consumed. Max. memory is 16.1GB. * CDTParser took 0.13ms. Allocated memory is still 130.0MB. Free memory is still 99.7MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 258.19ms. Allocated memory is still 167.8MB. Free memory was 138.5MB in the beginning and 125.0MB in the end (delta: 13.4MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 30.87ms. Allocated memory is still 167.8MB. Free memory was 125.0MB in the beginning and 122.9MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 36.90ms. Allocated memory is still 167.8MB. Free memory was 122.9MB in the beginning and 120.8MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 401.52ms. Allocated memory is still 167.8MB. Free memory was 120.8MB in the beginning and 93.6MB in the end (delta: 27.3MB). Peak memory consumption was 27.3MB. Max. memory is 16.1GB. * TraceAbstraction took 4477.36ms. Allocated memory was 167.8MB in the beginning and 805.3MB in the end (delta: 637.5MB). Free memory was 92.3MB in the beginning and 441.5MB in the end (delta: -349.1MB). Peak memory consumption was 407.1MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 127]: a call to reach_error is unreachable For all program executions holds that a call to reach_error is unreachable at this location - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 9 procedures, 92 locations, 5 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: 4.4s, OverallIterations: 3, TraceHistogramMax: 1, PathProgramHistogramMax: 2, EmptinessCheckTime: 0.0s, AutomataDifference: 3.5s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.1s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 111 SdHoareTripleChecker+Valid, 0.3s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 76 mSDsluCounter, 30 SdHoareTripleChecker+Invalid, 0.2s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 12 mSDsCounter, 28 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 358 IncrementalHoareTripleChecker+Invalid, 386 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 28 mSolverCounterUnsat, 18 mSDtfsCounter, 358 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 10 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=190occurred in iteration=2, InterpolantAutomatonStates: 10, 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, 0.4s InterpolantComputationTime, 110 NumberOfCodeBlocks, 110 NumberOfCodeBlocksAsserted, 3 NumberOfCheckSat, 107 ConstructedInterpolants, 0 QuantifiedInterpolants, 257 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! [2024-01-31 17:20:05,646 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: TRUE