./Ultimate.py --spec ../../../trunk/examples/svcomp/properties/unreach-call.prp --file ../../../trunk/examples/svcomp/pthread-wmm/safe029_tso.i --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/safe029_tso.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/pthread-wmm/safe029_tso.i ./goblint.2023-12-19_14-39-08.files/SV-COMP24_unreach-call/safe029_tso.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 16:44:17,949 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-01-31 16:44:18,022 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-01-31 16:44:18,031 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-01-31 16:44:18,032 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-01-31 16:44:18,063 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-01-31 16:44:18,064 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-01-31 16:44:18,064 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-01-31 16:44:18,065 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-01-31 16:44:18,070 INFO L153 SettingsManager]: * Use memory slicer=true [2024-01-31 16:44:18,070 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-01-31 16:44:18,070 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-01-31 16:44:18,071 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-01-31 16:44:18,073 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-01-31 16:44:18,073 INFO L153 SettingsManager]: * Use SBE=true [2024-01-31 16:44:18,073 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-01-31 16:44:18,074 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-01-31 16:44:18,074 INFO L153 SettingsManager]: * sizeof long=4 [2024-01-31 16:44:18,074 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-01-31 16:44:18,074 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-01-31 16:44:18,074 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-01-31 16:44:18,075 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-01-31 16:44:18,075 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-01-31 16:44:18,075 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-01-31 16:44:18,076 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-01-31 16:44:18,076 INFO L153 SettingsManager]: * sizeof long double=12 [2024-01-31 16:44:18,076 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-01-31 16:44:18,076 INFO L153 SettingsManager]: * Use constant arrays=true [2024-01-31 16:44:18,077 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-01-31 16:44:18,077 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-01-31 16:44:18,078 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-01-31 16:44:18,078 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-01-31 16:44:18,078 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-01-31 16:44:18,078 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-01-31 16:44:18,079 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-01-31 16:44:18,079 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-01-31 16:44:18,079 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-01-31 16:44:18,094 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-01-31 16:44:18,095 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-01-31 16:44:18,095 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-01-31 16:44:18,095 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2024-01-31 16:44:18,095 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-01-31 16:44:18,096 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-01-31 16:44:18,096 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessparser: Only consider loop invariants -> false [2024-01-31 16:44:18,329 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-01-31 16:44:18,358 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-01-31 16:44:18,360 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-01-31 16:44:18,361 INFO L270 PluginConnector]: Initializing CDTParser... [2024-01-31 16:44:18,361 INFO L274 PluginConnector]: CDTParser initialized [2024-01-31 16:44:18,362 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-wmm/safe029_tso.i [2024-01-31 16:44:19,438 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-01-31 16:44:19,635 INFO L384 CDTParser]: Found 1 translation units. [2024-01-31 16:44:19,636 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/safe029_tso.i [2024-01-31 16:44:19,645 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c3ab5c775/3886a9fe47dc46fab14290bdda0f16a4/FLAG434b909f7 [2024-01-31 16:44:19,658 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c3ab5c775/3886a9fe47dc46fab14290bdda0f16a4 [2024-01-31 16:44:19,661 INFO L270 PluginConnector]: Initializing Witness Parser... [2024-01-31 16:44:19,661 INFO L274 PluginConnector]: Witness Parser initialized [2024-01-31 16:44:19,662 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/./goblint.2023-12-19_14-39-08.files/SV-COMP24_unreach-call/safe029_tso.yml/witness.yml [2024-01-31 16:44:19,813 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-01-31 16:44:19,814 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2024-01-31 16:44:19,815 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-01-31 16:44:19,815 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-01-31 16:44:19,819 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-01-31 16:44:19,820 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 31.01 04:44:19" (1/2) ... [2024-01-31 16:44:19,822 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1dfbfd78 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 04:44:19, skipping insertion in model container [2024-01-31 16:44:19,823 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 31.01 04:44:19" (1/2) ... [2024-01-31 16:44:19,825 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@3250a4c7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 04:44:19, skipping insertion in model container [2024-01-31 16:44:19,825 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 31.01 04:44:19" (2/2) ... [2024-01-31 16:44:19,826 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1dfbfd78 and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 31.01 04:44:19, skipping insertion in model container [2024-01-31 16:44:19,826 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 31.01 04:44:19" (2/2) ... [2024-01-31 16:44:19,826 INFO L83 nessWitnessExtractor]: Extracting all invariants from correctness witness [2024-01-31 16:44:20,017 INFO L96 nessWitnessExtractor]: Found the following entries in the witness: [2024-01-31 16:44:20,019 INFO L98 nessWitnessExtractor]: Location invariant after [L18-L18] expression == 1 [2024-01-31 16:44:20,019 INFO L98 nessWitnessExtractor]: Location invariant before [L18-L18] expression == 0 [2024-01-31 16:44:20,066 INFO L179 MainTranslator]: Built tables and reachable declarations [2024-01-31 16:44:20,227 WARN L239 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/safe029_tso.i[945,958] [2024-01-31 16:44:20,349 INFO L209 PostProcessor]: Analyzing one entry point: main [2024-01-31 16:44:20,356 INFO L204 MainTranslator]: Completed pre-run [2024-01-31 16:44:20,365 WARN L239 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/safe029_tso.i[945,958] Start Parsing Local [2024-01-31 16:44:20,386 WARN L424 MainDispatcher]: Unable to annotate ; with a witness entry [2024-01-31 16:44:20,418 INFO L209 PostProcessor]: Analyzing one entry point: main [2024-01-31 16:44:20,446 INFO L208 MainTranslator]: Completed translation [2024-01-31 16:44:20,447 INFO L201 PluginConnector]: Adding new model witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 31.01 04:44:20 WrapperNode [2024-01-31 16:44:20,447 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-01-31 16:44:20,448 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-01-31 16:44:20,448 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-01-31 16:44:20,448 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-01-31 16:44:20,463 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 31.01 04:44:20" (1/1) ... [2024-01-31 16:44:20,497 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 31.01 04:44:20" (1/1) ... [2024-01-31 16:44:20,540 INFO L138 Inliner]: procedures = 175, calls = 40, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 57 [2024-01-31 16:44:20,541 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-01-31 16:44:20,542 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-01-31 16:44:20,542 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-01-31 16:44:20,542 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-01-31 16:44:20,549 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 31.01 04:44:20" (1/1) ... [2024-01-31 16:44:20,550 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 31.01 04:44:20" (1/1) ... [2024-01-31 16:44:20,562 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 31.01 04:44:20" (1/1) ... [2024-01-31 16:44:20,572 INFO L175 MemorySlicer]: Split 4 memory accesses to 3 slices as follows [2, 1, 1]. 50 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2, 0, 0]. The 2 writes are split as follows [0, 1, 1]. [2024-01-31 16:44:20,573 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 31.01 04:44:20" (1/1) ... [2024-01-31 16:44:20,573 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 31.01 04:44:20" (1/1) ... [2024-01-31 16:44:20,576 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 31.01 04:44:20" (1/1) ... [2024-01-31 16:44:20,577 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 31.01 04:44:20" (1/1) ... [2024-01-31 16:44:20,578 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 31.01 04:44:20" (1/1) ... [2024-01-31 16:44:20,579 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 31.01 04:44:20" (1/1) ... [2024-01-31 16:44:20,581 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-01-31 16:44:20,582 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-01-31 16:44:20,582 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-01-31 16:44:20,582 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-01-31 16:44:20,582 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 31.01 04:44:20" (1/1) ... [2024-01-31 16:44:20,611 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-01-31 16:44:20,621 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-01-31 16:44:20,705 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 16:44:20,736 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 16:44:20,753 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-01-31 16:44:20,754 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2024-01-31 16:44:20,754 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#2 [2024-01-31 16:44:20,754 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2024-01-31 16:44:20,754 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-01-31 16:44:20,754 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2024-01-31 16:44:20,754 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2024-01-31 16:44:20,754 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2024-01-31 16:44:20,754 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2024-01-31 16:44:20,754 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2024-01-31 16:44:20,754 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2024-01-31 16:44:20,754 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-01-31 16:44:20,754 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-01-31 16:44:20,754 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2024-01-31 16:44:20,754 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2024-01-31 16:44:20,755 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-01-31 16:44:20,755 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-01-31 16:44:20,761 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 16:44:20,905 INFO L244 CfgBuilder]: Building ICFG [2024-01-31 16:44:20,907 INFO L270 CfgBuilder]: Building CFG for each procedure with an implementation [2024-01-31 16:44:21,038 INFO L289 CfgBuilder]: Ommited future-live optimization because the input is a concurrent program. [2024-01-31 16:44:21,038 INFO L293 CfgBuilder]: Performing block encoding [2024-01-31 16:44:21,114 INFO L315 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-01-31 16:44:21,114 INFO L320 CfgBuilder]: Removed 0 assume(true) statements. [2024-01-31 16:44:21,115 INFO L201 PluginConnector]: Adding new model witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 31.01 04:44:21 BoogieIcfgContainer [2024-01-31 16:44:21,115 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-01-31 16:44:21,120 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-01-31 16:44:21,121 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-01-31 16:44:21,123 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-01-31 16:44:21,123 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 31.01 04:44:19" (1/4) ... [2024-01-31 16:44:21,124 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2ab308f7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 31.01 04:44:21, skipping insertion in model container [2024-01-31 16:44:21,124 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 31.01 04:44:19" (2/4) ... [2024-01-31 16:44:21,124 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2ab308f7 and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CORRECTNESS_WITNESS 31.01 04:44:21, skipping insertion in model container [2024-01-31 16:44:21,124 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 31.01 04:44:20" (3/4) ... [2024-01-31 16:44:21,125 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2ab308f7 and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CORRECTNESS_WITNESS 31.01 04:44:21, skipping insertion in model container [2024-01-31 16:44:21,125 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 31.01 04:44:21" (4/4) ... [2024-01-31 16:44:21,126 INFO L112 eAbstractionObserver]: Analyzing ICFG safe029_tso.i [2024-01-31 16:44:21,140 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-01-31 16:44:21,141 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2024-01-31 16:44:21,141 INFO L518 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-01-31 16:44:21,176 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2024-01-31 16:44:21,216 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 37 places, 31 transitions, 70 flow [2024-01-31 16:44:21,247 INFO L124 PetriNetUnfolderBase]: 1/29 cut-off events. [2024-01-31 16:44:21,249 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-01-31 16:44:21,253 INFO L83 FinitePrefix]: Finished finitePrefix Result has 36 conditions, 29 events. 1/29 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 38 event pairs, 0 based on Foata normal form. 0/26 useless extension candidates. Maximal degree in co-relation 29. Up to 2 conditions per place. [2024-01-31 16:44:21,253 INFO L82 GeneralOperation]: Start removeDead. Operand has 37 places, 31 transitions, 70 flow [2024-01-31 16:44:21,256 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 33 places, 26 transitions, 58 flow [2024-01-31 16:44:21,269 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-01-31 16:44:21,277 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;@341d5b96, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-01-31 16:44:21,277 INFO L358 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2024-01-31 16:44:21,294 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-01-31 16:44:21,294 INFO L124 PetriNetUnfolderBase]: 0/23 cut-off events. [2024-01-31 16:44:21,294 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-01-31 16:44:21,295 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-31 16:44:21,295 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-01-31 16:44:21,296 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-01-31 16:44:21,300 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-31 16:44:21,300 INFO L85 PathProgramCache]: Analyzing trace with hash 843462837, now seen corresponding path program 1 times [2024-01-31 16:44:21,306 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-31 16:44:21,306 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1145623984] [2024-01-31 16:44:21,307 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-31 16:44:21,307 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-31 16:44:21,436 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-31 16:44:21,547 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 16:44:21,547 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-31 16:44:21,547 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1145623984] [2024-01-31 16:44:21,548 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1145623984] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-31 16:44:21,548 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-31 16:44:21,548 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-01-31 16:44:21,550 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [279129426] [2024-01-31 16:44:21,551 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-31 16:44:21,560 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-01-31 16:44:21,564 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-31 16:44:21,584 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-01-31 16:44:21,585 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-01-31 16:44:21,592 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 16 out of 31 [2024-01-31 16:44:21,594 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 33 places, 26 transitions, 58 flow. Second operand has 3 states, 3 states have (on average 19.0) internal successors, (57), 3 states have internal predecessors, (57), 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 16:44:21,594 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-31 16:44:21,594 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 16 of 31 [2024-01-31 16:44:21,594 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-31 16:44:21,644 INFO L124 PetriNetUnfolderBase]: 23/83 cut-off events. [2024-01-31 16:44:21,644 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-01-31 16:44:21,645 INFO L83 FinitePrefix]: Finished finitePrefix Result has 145 conditions, 83 events. 23/83 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 13. Compared 324 event pairs, 15 based on Foata normal form. 0/75 useless extension candidates. Maximal degree in co-relation 135. Up to 37 conditions per place. [2024-01-31 16:44:21,646 INFO L140 encePairwiseOnDemand]: 29/31 looper letters, 12 selfloop transitions, 1 changer transitions 0/27 dead transitions. [2024-01-31 16:44:21,646 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 34 places, 27 transitions, 86 flow [2024-01-31 16:44:21,647 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-01-31 16:44:21,649 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-01-31 16:44:21,655 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 62 transitions. [2024-01-31 16:44:21,657 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6666666666666666 [2024-01-31 16:44:21,658 INFO L175 Difference]: Start difference. First operand has 33 places, 26 transitions, 58 flow. Second operand 3 states and 62 transitions. [2024-01-31 16:44:21,659 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 34 places, 27 transitions, 86 flow [2024-01-31 16:44:21,660 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 32 places, 27 transitions, 84 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-01-31 16:44:21,662 INFO L231 Difference]: Finished difference. Result has 32 places, 25 transitions, 56 flow [2024-01-31 16:44:21,663 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=54, PETRI_DIFFERENCE_MINUEND_PLACES=30, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=25, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=24, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=56, PETRI_PLACES=32, PETRI_TRANSITIONS=25} [2024-01-31 16:44:21,666 INFO L281 CegarLoopForPetriNet]: 33 programPoint places, -1 predicate places. [2024-01-31 16:44:21,666 INFO L495 AbstractCegarLoop]: Abstraction has has 32 places, 25 transitions, 56 flow [2024-01-31 16:44:21,666 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 19.0) internal successors, (57), 3 states have internal predecessors, (57), 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 16:44:21,666 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-31 16:44:21,666 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-01-31 16:44:21,667 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-01-31 16:44:21,667 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-01-31 16:44:21,667 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-31 16:44:21,667 INFO L85 PathProgramCache]: Analyzing trace with hash 377544338, now seen corresponding path program 1 times [2024-01-31 16:44:21,668 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-31 16:44:21,668 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [720026745] [2024-01-31 16:44:21,668 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-31 16:44:21,668 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-31 16:44:21,720 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-31 16:44:21,936 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 16:44:21,936 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-31 16:44:21,936 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [720026745] [2024-01-31 16:44:21,937 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [720026745] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-31 16:44:21,937 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-31 16:44:21,937 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-01-31 16:44:21,937 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [981669273] [2024-01-31 16:44:21,938 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-31 16:44:21,938 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-01-31 16:44:21,939 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-31 16:44:21,939 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-01-31 16:44:21,939 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-01-31 16:44:21,960 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 31 [2024-01-31 16:44:21,961 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 32 places, 25 transitions, 56 flow. Second operand has 5 states, 5 states have (on average 15.0) internal successors, (75), 5 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 16:44:21,961 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-31 16:44:21,961 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 31 [2024-01-31 16:44:21,961 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-31 16:44:22,136 INFO L124 PetriNetUnfolderBase]: 88/244 cut-off events. [2024-01-31 16:44:22,137 INFO L125 PetriNetUnfolderBase]: For 8/8 co-relation queries the response was YES. [2024-01-31 16:44:22,138 INFO L83 FinitePrefix]: Finished finitePrefix Result has 435 conditions, 244 events. 88/244 cut-off events. For 8/8 co-relation queries the response was YES. Maximal size of possible extension queue 28. Compared 1261 event pairs, 42 based on Foata normal form. 9/243 useless extension candidates. Maximal degree in co-relation 426. Up to 133 conditions per place. [2024-01-31 16:44:22,140 INFO L140 encePairwiseOnDemand]: 25/31 looper letters, 17 selfloop transitions, 3 changer transitions 15/46 dead transitions. [2024-01-31 16:44:22,140 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 38 places, 46 transitions, 170 flow [2024-01-31 16:44:22,140 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-01-31 16:44:22,141 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-01-31 16:44:22,144 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 128 transitions. [2024-01-31 16:44:22,144 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5898617511520737 [2024-01-31 16:44:22,145 INFO L175 Difference]: Start difference. First operand has 32 places, 25 transitions, 56 flow. Second operand 7 states and 128 transitions. [2024-01-31 16:44:22,145 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 38 places, 46 transitions, 170 flow [2024-01-31 16:44:22,147 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 37 places, 46 transitions, 169 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-01-31 16:44:22,149 INFO L231 Difference]: Finished difference. Result has 42 places, 27 transitions, 90 flow [2024-01-31 16:44:22,149 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=55, PETRI_DIFFERENCE_MINUEND_PLACES=31, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=25, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=22, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=90, PETRI_PLACES=42, PETRI_TRANSITIONS=27} [2024-01-31 16:44:22,150 INFO L281 CegarLoopForPetriNet]: 33 programPoint places, 9 predicate places. [2024-01-31 16:44:22,150 INFO L495 AbstractCegarLoop]: Abstraction has has 42 places, 27 transitions, 90 flow [2024-01-31 16:44:22,151 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 15.0) internal successors, (75), 5 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 16:44:22,151 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-31 16:44:22,151 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-01-31 16:44:22,151 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-01-31 16:44:22,151 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-01-31 16:44:22,152 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-31 16:44:22,152 INFO L85 PathProgramCache]: Analyzing trace with hash -263923781, now seen corresponding path program 1 times [2024-01-31 16:44:22,152 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-31 16:44:22,153 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2113405848] [2024-01-31 16:44:22,153 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-31 16:44:22,153 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-31 16:44:22,175 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-31 16:44:22,353 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 16:44:22,353 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-31 16:44:22,353 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2113405848] [2024-01-31 16:44:22,354 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2113405848] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-31 16:44:22,354 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-31 16:44:22,354 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-01-31 16:44:22,354 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1102188639] [2024-01-31 16:44:22,354 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-31 16:44:22,355 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-01-31 16:44:22,356 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-31 16:44:22,356 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-01-31 16:44:22,356 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-01-31 16:44:22,384 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 31 [2024-01-31 16:44:22,385 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 42 places, 27 transitions, 90 flow. Second operand has 6 states, 6 states have (on average 12.833333333333334) internal successors, (77), 6 states have internal predecessors, (77), 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 16:44:22,385 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-31 16:44:22,385 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 31 [2024-01-31 16:44:22,385 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-31 16:44:22,565 INFO L124 PetriNetUnfolderBase]: 325/700 cut-off events. [2024-01-31 16:44:22,565 INFO L125 PetriNetUnfolderBase]: For 427/427 co-relation queries the response was YES. [2024-01-31 16:44:22,569 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1703 conditions, 700 events. 325/700 cut-off events. For 427/427 co-relation queries the response was YES. Maximal size of possible extension queue 55. Compared 4037 event pairs, 57 based on Foata normal form. 32/728 useless extension candidates. Maximal degree in co-relation 1688. Up to 238 conditions per place. [2024-01-31 16:44:22,573 INFO L140 encePairwiseOnDemand]: 25/31 looper letters, 26 selfloop transitions, 5 changer transitions 29/71 dead transitions. [2024-01-31 16:44:22,574 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 47 places, 71 transitions, 325 flow [2024-01-31 16:44:22,574 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-01-31 16:44:22,574 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-01-31 16:44:22,577 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 173 transitions. [2024-01-31 16:44:22,577 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5580645161290323 [2024-01-31 16:44:22,577 INFO L175 Difference]: Start difference. First operand has 42 places, 27 transitions, 90 flow. Second operand 10 states and 173 transitions. [2024-01-31 16:44:22,578 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 47 places, 71 transitions, 325 flow [2024-01-31 16:44:22,581 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 44 places, 71 transitions, 308 flow, removed 7 selfloop flow, removed 3 redundant places. [2024-01-31 16:44:22,583 INFO L231 Difference]: Finished difference. Result has 52 places, 29 transitions, 119 flow [2024-01-31 16:44:22,583 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=83, PETRI_DIFFERENCE_MINUEND_PLACES=35, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=27, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=24, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=119, PETRI_PLACES=52, PETRI_TRANSITIONS=29} [2024-01-31 16:44:22,584 INFO L281 CegarLoopForPetriNet]: 33 programPoint places, 19 predicate places. [2024-01-31 16:44:22,584 INFO L495 AbstractCegarLoop]: Abstraction has has 52 places, 29 transitions, 119 flow [2024-01-31 16:44:22,584 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 12.833333333333334) internal successors, (77), 6 states have internal predecessors, (77), 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 16:44:22,584 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-31 16:44:22,585 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-01-31 16:44:22,585 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-01-31 16:44:22,585 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-01-31 16:44:22,585 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-31 16:44:22,586 INFO L85 PathProgramCache]: Analyzing trace with hash -2109554193, now seen corresponding path program 1 times [2024-01-31 16:44:22,586 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-31 16:44:22,586 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [923696884] [2024-01-31 16:44:22,586 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-31 16:44:22,586 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-31 16:44:22,603 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-31 16:44:22,688 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 16:44:22,689 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-31 16:44:22,692 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [923696884] [2024-01-31 16:44:22,692 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [923696884] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-31 16:44:22,692 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-31 16:44:22,693 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-01-31 16:44:22,693 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [286923555] [2024-01-31 16:44:22,693 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-31 16:44:22,694 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-01-31 16:44:22,694 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-31 16:44:22,696 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-01-31 16:44:22,696 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-01-31 16:44:22,705 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 31 [2024-01-31 16:44:22,706 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 52 places, 29 transitions, 119 flow. Second operand has 5 states, 5 states have (on average 15.2) internal successors, (76), 5 states have internal predecessors, (76), 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 16:44:22,706 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-31 16:44:22,706 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 31 [2024-01-31 16:44:22,706 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-31 16:44:22,826 INFO L124 PetriNetUnfolderBase]: 141/431 cut-off events. [2024-01-31 16:44:22,827 INFO L125 PetriNetUnfolderBase]: For 683/685 co-relation queries the response was YES. [2024-01-31 16:44:22,828 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1132 conditions, 431 events. 141/431 cut-off events. For 683/685 co-relation queries the response was YES. Maximal size of possible extension queue 51. Compared 2904 event pairs, 27 based on Foata normal form. 14/427 useless extension candidates. Maximal degree in co-relation 1110. Up to 142 conditions per place. [2024-01-31 16:44:22,829 INFO L140 encePairwiseOnDemand]: 26/31 looper letters, 22 selfloop transitions, 3 changer transitions 13/51 dead transitions. [2024-01-31 16:44:22,829 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 52 places, 51 transitions, 292 flow [2024-01-31 16:44:22,829 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-01-31 16:44:22,829 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-01-31 16:44:22,830 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 130 transitions. [2024-01-31 16:44:22,830 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5990783410138248 [2024-01-31 16:44:22,830 INFO L175 Difference]: Start difference. First operand has 52 places, 29 transitions, 119 flow. Second operand 7 states and 130 transitions. [2024-01-31 16:44:22,830 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 52 places, 51 transitions, 292 flow [2024-01-31 16:44:22,833 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 46 places, 51 transitions, 250 flow, removed 21 selfloop flow, removed 6 redundant places. [2024-01-31 16:44:22,833 INFO L231 Difference]: Finished difference. Result has 51 places, 29 transitions, 124 flow [2024-01-31 16:44:22,833 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=105, PETRI_DIFFERENCE_MINUEND_PLACES=40, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=29, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=26, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=124, PETRI_PLACES=51, PETRI_TRANSITIONS=29} [2024-01-31 16:44:22,834 INFO L281 CegarLoopForPetriNet]: 33 programPoint places, 18 predicate places. [2024-01-31 16:44:22,834 INFO L495 AbstractCegarLoop]: Abstraction has has 51 places, 29 transitions, 124 flow [2024-01-31 16:44:22,834 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 15.2) internal successors, (76), 5 states have internal predecessors, (76), 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 16:44:22,834 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-31 16:44:22,835 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-01-31 16:44:22,835 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-01-31 16:44:22,835 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-01-31 16:44:22,835 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-31 16:44:22,835 INFO L85 PathProgramCache]: Analyzing trace with hash 636942544, now seen corresponding path program 1 times [2024-01-31 16:44:22,836 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-31 16:44:22,836 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [220451225] [2024-01-31 16:44:22,836 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-31 16:44:22,836 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-31 16:44:22,847 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-31 16:44:22,897 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 16:44:22,897 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-31 16:44:22,897 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [220451225] [2024-01-31 16:44:22,897 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [220451225] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-31 16:44:22,897 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-31 16:44:22,898 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-01-31 16:44:22,898 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [674624726] [2024-01-31 16:44:22,898 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-31 16:44:22,898 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-01-31 16:44:22,898 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-31 16:44:22,899 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-01-31 16:44:22,899 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-01-31 16:44:22,901 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 17 out of 31 [2024-01-31 16:44:22,901 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 51 places, 29 transitions, 124 flow. Second operand has 4 states, 4 states have (on average 19.0) internal successors, (76), 4 states have internal predecessors, (76), 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 16:44:22,901 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-31 16:44:22,901 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 17 of 31 [2024-01-31 16:44:22,902 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-31 16:44:22,949 INFO L124 PetriNetUnfolderBase]: 147/395 cut-off events. [2024-01-31 16:44:22,949 INFO L125 PetriNetUnfolderBase]: For 231/235 co-relation queries the response was YES. [2024-01-31 16:44:22,950 INFO L83 FinitePrefix]: Finished finitePrefix Result has 877 conditions, 395 events. 147/395 cut-off events. For 231/235 co-relation queries the response was YES. Maximal size of possible extension queue 50. Compared 2205 event pairs, 30 based on Foata normal form. 25/400 useless extension candidates. Maximal degree in co-relation 855. Up to 150 conditions per place. [2024-01-31 16:44:22,950 INFO L140 encePairwiseOnDemand]: 26/31 looper letters, 15 selfloop transitions, 4 changer transitions 3/39 dead transitions. [2024-01-31 16:44:22,951 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 50 places, 39 transitions, 190 flow [2024-01-31 16:44:22,951 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-01-31 16:44:22,951 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-01-31 16:44:22,951 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 92 transitions. [2024-01-31 16:44:22,952 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.7419354838709677 [2024-01-31 16:44:22,952 INFO L175 Difference]: Start difference. First operand has 51 places, 29 transitions, 124 flow. Second operand 4 states and 92 transitions. [2024-01-31 16:44:22,952 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 50 places, 39 transitions, 190 flow [2024-01-31 16:44:22,953 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 44 places, 39 transitions, 170 flow, removed 7 selfloop flow, removed 6 redundant places. [2024-01-31 16:44:22,953 INFO L231 Difference]: Finished difference. Result has 46 places, 31 transitions, 130 flow [2024-01-31 16:44:22,954 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=104, PETRI_DIFFERENCE_MINUEND_PLACES=41, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=29, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=25, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=130, PETRI_PLACES=46, PETRI_TRANSITIONS=31} [2024-01-31 16:44:22,954 INFO L281 CegarLoopForPetriNet]: 33 programPoint places, 13 predicate places. [2024-01-31 16:44:22,954 INFO L495 AbstractCegarLoop]: Abstraction has has 46 places, 31 transitions, 130 flow [2024-01-31 16:44:22,955 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 19.0) internal successors, (76), 4 states have internal predecessors, (76), 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 16:44:22,955 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-31 16:44:22,955 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] [2024-01-31 16:44:22,955 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-01-31 16:44:22,955 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-01-31 16:44:22,955 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-31 16:44:22,956 INFO L85 PathProgramCache]: Analyzing trace with hash -1508084549, now seen corresponding path program 1 times [2024-01-31 16:44:22,956 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-31 16:44:22,956 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2077536282] [2024-01-31 16:44:22,956 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-31 16:44:22,956 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-31 16:44:22,965 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-31 16:44:23,032 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 16:44:23,033 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-31 16:44:23,033 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2077536282] [2024-01-31 16:44:23,033 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2077536282] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-31 16:44:23,033 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-31 16:44:23,033 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-01-31 16:44:23,033 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1214272696] [2024-01-31 16:44:23,033 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-31 16:44:23,034 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-01-31 16:44:23,034 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-31 16:44:23,034 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-01-31 16:44:23,034 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-01-31 16:44:23,039 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 17 out of 31 [2024-01-31 16:44:23,039 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 46 places, 31 transitions, 130 flow. Second operand has 5 states, 5 states have (on average 18.8) internal successors, (94), 5 states have internal predecessors, (94), 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 16:44:23,039 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-31 16:44:23,039 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 17 of 31 [2024-01-31 16:44:23,039 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-31 16:44:23,094 INFO L124 PetriNetUnfolderBase]: 94/229 cut-off events. [2024-01-31 16:44:23,094 INFO L125 PetriNetUnfolderBase]: For 128/148 co-relation queries the response was YES. [2024-01-31 16:44:23,095 INFO L83 FinitePrefix]: Finished finitePrefix Result has 604 conditions, 229 events. 94/229 cut-off events. For 128/148 co-relation queries the response was YES. Maximal size of possible extension queue 28. Compared 1007 event pairs, 6 based on Foata normal form. 28/245 useless extension candidates. Maximal degree in co-relation 584. Up to 84 conditions per place. [2024-01-31 16:44:23,095 INFO L140 encePairwiseOnDemand]: 26/31 looper letters, 0 selfloop transitions, 0 changer transitions 35/35 dead transitions. [2024-01-31 16:44:23,095 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 44 places, 35 transitions, 176 flow [2024-01-31 16:44:23,096 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-01-31 16:44:23,096 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-01-31 16:44:23,096 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 109 transitions. [2024-01-31 16:44:23,097 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.7032258064516129 [2024-01-31 16:44:23,097 INFO L175 Difference]: Start difference. First operand has 46 places, 31 transitions, 130 flow. Second operand 5 states and 109 transitions. [2024-01-31 16:44:23,097 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 44 places, 35 transitions, 176 flow [2024-01-31 16:44:23,098 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 38 places, 35 transitions, 157 flow, removed 3 selfloop flow, removed 6 redundant places. [2024-01-31 16:44:23,098 INFO L231 Difference]: Finished difference. Result has 38 places, 0 transitions, 0 flow [2024-01-31 16:44:23,098 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=92, PETRI_DIFFERENCE_MINUEND_PLACES=34, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=26, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=26, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=0, PETRI_PLACES=38, PETRI_TRANSITIONS=0} [2024-01-31 16:44:23,099 INFO L281 CegarLoopForPetriNet]: 33 programPoint places, 5 predicate places. [2024-01-31 16:44:23,099 INFO L495 AbstractCegarLoop]: Abstraction has has 38 places, 0 transitions, 0 flow [2024-01-31 16:44:23,099 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 18.8) internal successors, (94), 5 states have internal predecessors, (94), 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 16:44:23,101 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT (3 of 4 remaining) [2024-01-31 16:44:23,102 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION (2 of 4 remaining) [2024-01-31 16:44:23,102 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 4 remaining) [2024-01-31 16:44:23,102 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 4 remaining) [2024-01-31 16:44:23,102 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-01-31 16:44:23,102 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1] [2024-01-31 16:44:23,105 INFO L229 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2024-01-31 16:44:23,105 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2024-01-31 16:44:23,109 INFO L503 ceAbstractionStarter]: Automizer considered 1 witness invariants [2024-01-31 16:44:23,109 INFO L504 ceAbstractionStarter]: WitnessConsidered=1 [2024-01-31 16:44:23,110 INFO L201 PluginConnector]: Adding new model witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 31.01 04:44:23 BasicIcfg [2024-01-31 16:44:23,110 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2024-01-31 16:44:23,110 INFO L158 Benchmark]: Toolchain (without parser) took 3296.56ms. Allocated memory was 165.7MB in the beginning and 199.2MB in the end (delta: 33.6MB). Free memory was 128.9MB in the beginning and 85.8MB in the end (delta: 43.1MB). Peak memory consumption was 77.7MB. Max. memory is 16.1GB. [2024-01-31 16:44:23,110 INFO L158 Benchmark]: CDTParser took 0.11ms. Allocated memory is still 115.3MB. Free memory is still 82.6MB. There was no memory consumed. Max. memory is 16.1GB. [2024-01-31 16:44:23,111 INFO L158 Benchmark]: Witness Parser took 0.15ms. Allocated memory is still 115.3MB. Free memory is still 57.6MB. There was no memory consumed. Max. memory is 16.1GB. [2024-01-31 16:44:23,111 INFO L158 Benchmark]: CACSL2BoogieTranslator took 632.61ms. Allocated memory is still 165.7MB. Free memory was 128.2MB in the beginning and 78.6MB in the end (delta: 49.6MB). Peak memory consumption was 48.2MB. Max. memory is 16.1GB. [2024-01-31 16:44:23,111 INFO L158 Benchmark]: Boogie Procedure Inliner took 92.86ms. Allocated memory is still 165.7MB. Free memory was 78.6MB in the beginning and 133.4MB in the end (delta: -54.8MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2024-01-31 16:44:23,111 INFO L158 Benchmark]: Boogie Preprocessor took 39.43ms. Allocated memory is still 165.7MB. Free memory was 133.4MB in the beginning and 131.3MB in the end (delta: 2.1MB). There was no memory consumed. Max. memory is 16.1GB. [2024-01-31 16:44:23,112 INFO L158 Benchmark]: RCFGBuilder took 533.93ms. Allocated memory is still 165.7MB. Free memory was 131.3MB in the beginning and 111.3MB in the end (delta: 19.9MB). Peak memory consumption was 21.0MB. Max. memory is 16.1GB. [2024-01-31 16:44:23,112 INFO L158 Benchmark]: TraceAbstraction took 1990.06ms. Allocated memory was 165.7MB in the beginning and 199.2MB in the end (delta: 33.6MB). Free memory was 110.3MB in the beginning and 85.8MB in the end (delta: 24.5MB). Peak memory consumption was 61.2MB. Max. memory is 16.1GB. [2024-01-31 16:44:23,113 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.11ms. Allocated memory is still 115.3MB. Free memory is still 82.6MB. There was no memory consumed. Max. memory is 16.1GB. * Witness Parser took 0.15ms. Allocated memory is still 115.3MB. Free memory is still 57.6MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 632.61ms. Allocated memory is still 165.7MB. Free memory was 128.2MB in the beginning and 78.6MB in the end (delta: 49.6MB). Peak memory consumption was 48.2MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 92.86ms. Allocated memory is still 165.7MB. Free memory was 78.6MB in the beginning and 133.4MB in the end (delta: -54.8MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * Boogie Preprocessor took 39.43ms. Allocated memory is still 165.7MB. Free memory was 133.4MB in the beginning and 131.3MB in the end (delta: 2.1MB). There was no memory consumed. Max. memory is 16.1GB. * RCFGBuilder took 533.93ms. Allocated memory is still 165.7MB. Free memory was 131.3MB in the beginning and 111.3MB in the end (delta: 19.9MB). Peak memory consumption was 21.0MB. Max. memory is 16.1GB. * TraceAbstraction took 1990.06ms. Allocated memory was 165.7MB in the beginning and 199.2MB in the end (delta: 33.6MB). Free memory was 110.3MB in the beginning and 85.8MB in the end (delta: 24.5MB). Peak memory consumption was 61.2MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 18]: invariant of correctness witness holds For all program executions holds that invariant of correctness witness holds at this location - PositiveResult [Line: 18]: 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 5 procedures, 47 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: 1.9s, OverallIterations: 6, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.8s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 162 SdHoareTripleChecker+Valid, 0.3s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 128 mSDsluCounter, 132 SdHoareTripleChecker+Invalid, 0.2s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 90 mSDsCounter, 15 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 341 IncrementalHoareTripleChecker+Invalid, 356 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 15 mSolverCounterUnsat, 42 mSDtfsCounter, 341 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 37 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=130occurred in iteration=5, InterpolantAutomatonStates: 36, 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, 93 NumberOfCodeBlocks, 93 NumberOfCodeBlocksAsserted, 6 NumberOfCheckSat, 87 ConstructedInterpolants, 0 QuantifiedInterpolants, 263 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 6 InterpolantComputations, 6 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 2 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2024-01-31 16:44:23,148 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