./Ultimate.py --spec ../../../trunk/examples/svcomp/properties/unreach-call.prp --file ../../../trunk/examples/svcomp/weaver/popl20-more-buffer-mult2.wvr.c --full-output --witness-type correctness_witness --witnessparser.only.consider.loop.invariants false --cacsl2boogietranslator.check.unreachability.of.reach_error.function false --validate ./goblint.2024-06-19_11-23-25.files/protection/popl20-more-buffer-mult2.wvr.yml/witness.yml --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 7724a2de 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/popl20-more-buffer-mult2.wvr.c ./goblint.2024-06-19_11-23-25.files/protection/popl20-more-buffer-mult2.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 --cacsl2boogietranslator.check.unreachability.of.reach_error.function false --- Real Ultimate output --- This is Ultimate 0.2.4-tmp.fs.goblint-validation-7724a2d-m [2024-06-27 19:42:47,056 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-06-27 19:42:47,136 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-06-27 19:42:47,141 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-06-27 19:42:47,141 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-06-27 19:42:47,164 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-06-27 19:42:47,164 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-06-27 19:42:47,165 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-06-27 19:42:47,165 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-06-27 19:42:47,168 INFO L153 SettingsManager]: * Use memory slicer=true [2024-06-27 19:42:47,169 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-06-27 19:42:47,169 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-06-27 19:42:47,170 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-06-27 19:42:47,171 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-06-27 19:42:47,171 INFO L153 SettingsManager]: * Use SBE=true [2024-06-27 19:42:47,171 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-06-27 19:42:47,171 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-06-27 19:42:47,171 INFO L153 SettingsManager]: * sizeof long=4 [2024-06-27 19:42:47,172 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-06-27 19:42:47,172 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-06-27 19:42:47,172 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-06-27 19:42:47,173 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-06-27 19:42:47,173 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-06-27 19:42:47,173 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-06-27 19:42:47,173 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-06-27 19:42:47,173 INFO L153 SettingsManager]: * sizeof long double=12 [2024-06-27 19:42:47,174 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-06-27 19:42:47,174 INFO L153 SettingsManager]: * Use constant arrays=true [2024-06-27 19:42:47,174 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-06-27 19:42:47,174 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-06-27 19:42:47,175 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-06-27 19:42:47,175 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-06-27 19:42:47,176 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-06-27 19:42:47,176 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-06-27 19:42:47,176 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-06-27 19:42:47,176 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-06-27 19:42:47,176 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-06-27 19:42:47,176 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-06-27 19:42:47,177 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-06-27 19:42:47,177 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-06-27 19:42:47,177 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2024-06-27 19:42:47,177 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-06-27 19:42:47,177 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-06-27 19:42:47,178 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessparser: Only consider loop invariants -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Check unreachability of reach_error function -> false [2024-06-27 19:42:47,378 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-06-27 19:42:47,396 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-06-27 19:42:47,398 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-06-27 19:42:47,399 INFO L270 PluginConnector]: Initializing CDTParser... [2024-06-27 19:42:47,399 INFO L274 PluginConnector]: CDTParser initialized [2024-06-27 19:42:47,400 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/weaver/popl20-more-buffer-mult2.wvr.c [2024-06-27 19:42:48,352 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-06-27 19:42:48,523 INFO L384 CDTParser]: Found 1 translation units. [2024-06-27 19:42:48,524 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/weaver/popl20-more-buffer-mult2.wvr.c [2024-06-27 19:42:48,534 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/9463d95cc/82ac4e44d30f44eca2441248dc2a42e4/FLAG28b06391c [2024-06-27 19:42:48,544 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/9463d95cc/82ac4e44d30f44eca2441248dc2a42e4 [2024-06-27 19:42:48,546 INFO L270 PluginConnector]: Initializing Witness Parser... [2024-06-27 19:42:48,547 INFO L274 PluginConnector]: Witness Parser initialized [2024-06-27 19:42:48,549 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/./goblint.2024-06-19_11-23-25.files/protection/popl20-more-buffer-mult2.wvr.yml/witness.yml [2024-06-27 19:42:48,625 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-06-27 19:42:48,626 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2024-06-27 19:42:48,627 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-06-27 19:42:48,627 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-06-27 19:42:48,630 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-06-27 19:42:48,631 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.06 07:42:48" (1/2) ... [2024-06-27 19:42:48,631 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@55d7826 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 07:42:48, skipping insertion in model container [2024-06-27 19:42:48,631 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.06 07:42:48" (1/2) ... [2024-06-27 19:42:48,633 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@5465ddb4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 07:42:48, skipping insertion in model container [2024-06-27 19:42:48,633 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 27.06 07:42:48" (2/2) ... [2024-06-27 19:42:48,633 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@55d7826 and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 27.06 07:42:48, skipping insertion in model container [2024-06-27 19:42:48,634 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 27.06 07:42:48" (2/2) ... [2024-06-27 19:42:48,634 INFO L83 nessWitnessExtractor]: Extracting all invariants from correctness witness [2024-06-27 19:42:48,655 INFO L95 edCorrectnessWitness]: Found the following entries in the witness: [2024-06-27 19:42:48,656 INFO L97 edCorrectnessWitness]: Location invariant before [L140-L140] (! multithreaded || 0 <= i) && (! multithreaded || 0 <= j) [2024-06-27 19:42:48,656 INFO L97 edCorrectnessWitness]: Location invariant before [L142-L142] (! multithreaded || 0 <= i) && (! multithreaded || 0 <= j) [2024-06-27 19:42:48,656 INFO L97 edCorrectnessWitness]: Location invariant before [L141-L141] (! multithreaded || 0 <= i) && (! multithreaded || 0 <= j) [2024-06-27 19:42:48,656 INFO L97 edCorrectnessWitness]: Location invariant before [L139-L139] (! multithreaded || 0 <= i) && (! multithreaded || 0 <= j) [2024-06-27 19:42:48,656 INFO L103 edCorrectnessWitness]: ghost_variable multithreaded = 0 [2024-06-27 19:42:48,657 INFO L106 edCorrectnessWitness]: ghost_update [L138-L138] multithreaded = 1; [2024-06-27 19:42:48,676 INFO L177 MainTranslator]: Built tables and reachable declarations [2024-06-27 19:42:48,858 INFO L207 PostProcessor]: Analyzing one entry point: main [2024-06-27 19:42:48,867 INFO L202 MainTranslator]: Completed pre-run Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local [2024-06-27 19:42:48,916 INFO L207 PostProcessor]: Analyzing one entry point: main [2024-06-27 19:42:48,928 INFO L206 MainTranslator]: Completed translation [2024-06-27 19:42:48,929 INFO L201 PluginConnector]: Adding new model witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 27.06 07:42:48 WrapperNode [2024-06-27 19:42:48,930 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-06-27 19:42:48,930 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-06-27 19:42:48,930 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-06-27 19:42:48,931 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-06-27 19:42:48,936 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 27.06 07:42:48" (1/1) ... [2024-06-27 19:42:48,942 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 27.06 07:42:48" (1/1) ... [2024-06-27 19:42:48,965 INFO L138 Inliner]: procedures = 26, calls = 57, calls flagged for inlining = 19, calls inlined = 23, statements flattened = 301 [2024-06-27 19:42:48,965 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-06-27 19:42:48,966 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-06-27 19:42:48,966 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-06-27 19:42:48,966 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-06-27 19:42:48,976 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 27.06 07:42:48" (1/1) ... [2024-06-27 19:42:48,976 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 27.06 07:42:48" (1/1) ... [2024-06-27 19:42:48,992 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 27.06 07:42:48" (1/1) ... [2024-06-27 19:42:49,012 INFO L175 MemorySlicer]: Split 8 memory accesses to 2 slices as follows [2, 6]. 75 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2, 0]. The 2 writes are split as follows [0, 2]. [2024-06-27 19:42:49,013 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 27.06 07:42:48" (1/1) ... [2024-06-27 19:42:49,014 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 27.06 07:42:48" (1/1) ... [2024-06-27 19:42:49,021 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 27.06 07:42:48" (1/1) ... [2024-06-27 19:42:49,023 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 27.06 07:42:48" (1/1) ... [2024-06-27 19:42:49,025 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 27.06 07:42:48" (1/1) ... [2024-06-27 19:42:49,026 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 27.06 07:42:48" (1/1) ... [2024-06-27 19:42:49,028 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-06-27 19:42:49,029 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-06-27 19:42:49,029 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-06-27 19:42:49,029 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-06-27 19:42:49,030 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 27.06 07:42:48" (1/1) ... [2024-06-27 19:42:49,041 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-06-27 19:42:49,046 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-06-27 19:42:49,057 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) [2024-06-27 19:42:49,060 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 [2024-06-27 19:42:49,084 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-06-27 19:42:49,084 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-06-27 19:42:49,084 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2024-06-27 19:42:49,084 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2024-06-27 19:42:49,084 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2024-06-27 19:42:49,084 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2024-06-27 19:42:49,085 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2024-06-27 19:42:49,085 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2024-06-27 19:42:49,085 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2024-06-27 19:42:49,085 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2024-06-27 19:42:49,085 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2024-06-27 19:42:49,085 INFO L130 BoogieDeclarations]: Found specification of procedure thread4 [2024-06-27 19:42:49,085 INFO L138 BoogieDeclarations]: Found implementation of procedure thread4 [2024-06-27 19:42:49,086 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-06-27 19:42:49,086 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-06-27 19:42:49,086 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2024-06-27 19:42:49,086 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2024-06-27 19:42:49,086 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2024-06-27 19:42:49,086 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-06-27 19:42:49,086 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-06-27 19:42:49,096 WARN L214 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2024-06-27 19:42:49,180 INFO L244 CfgBuilder]: Building ICFG [2024-06-27 19:42:49,181 INFO L270 CfgBuilder]: Building CFG for each procedure with an implementation [2024-06-27 19:42:49,518 INFO L289 CfgBuilder]: Ommited future-live optimization because the input is a concurrent program. [2024-06-27 19:42:49,518 INFO L293 CfgBuilder]: Performing block encoding [2024-06-27 19:42:49,750 INFO L315 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-06-27 19:42:49,751 INFO L320 CfgBuilder]: Removed 6 assume(true) statements. [2024-06-27 19:42:49,751 INFO L201 PluginConnector]: Adding new model witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.06 07:42:49 BoogieIcfgContainer [2024-06-27 19:42:49,751 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-06-27 19:42:49,753 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-06-27 19:42:49,753 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-06-27 19:42:49,756 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-06-27 19:42:49,756 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 27.06 07:42:48" (1/4) ... [2024-06-27 19:42:49,756 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6eebbb52 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.06 07:42:49, skipping insertion in model container [2024-06-27 19:42:49,756 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 27.06 07:42:48" (2/4) ... [2024-06-27 19:42:49,757 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6eebbb52 and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CORRECTNESS_WITNESS 27.06 07:42:49, skipping insertion in model container [2024-06-27 19:42:49,757 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 27.06 07:42:48" (3/4) ... [2024-06-27 19:42:49,757 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6eebbb52 and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CORRECTNESS_WITNESS 27.06 07:42:49, skipping insertion in model container [2024-06-27 19:42:49,757 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.06 07:42:49" (4/4) ... [2024-06-27 19:42:49,758 INFO L112 eAbstractionObserver]: Analyzing ICFG popl20-more-buffer-mult2.wvr.c [2024-06-27 19:42:49,772 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-06-27 19:42:49,772 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 4 error locations. [2024-06-27 19:42:49,772 INFO L522 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-06-27 19:42:49,819 INFO L144 ThreadInstanceAdder]: Constructed 4 joinOtherThreadTransitions. [2024-06-27 19:42:49,851 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 62 places, 55 transitions, 138 flow [2024-06-27 19:42:49,882 INFO L124 PetriNetUnfolderBase]: 6/51 cut-off events. [2024-06-27 19:42:49,883 INFO L125 PetriNetUnfolderBase]: For 4/4 co-relation queries the response was YES. [2024-06-27 19:42:49,886 INFO L83 FinitePrefix]: Finished finitePrefix Result has 68 conditions, 51 events. 6/51 cut-off events. For 4/4 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 80 event pairs, 0 based on Foata normal form. 0/41 useless extension candidates. Maximal degree in co-relation 45. Up to 2 conditions per place. [2024-06-27 19:42:49,886 INFO L82 GeneralOperation]: Start removeDead. Operand has 62 places, 55 transitions, 138 flow [2024-06-27 19:42:49,890 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 56 places, 49 transitions, 119 flow [2024-06-27 19:42:49,901 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-06-27 19:42:49,909 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;@ad399c0, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-06-27 19:42:49,910 INFO L358 AbstractCegarLoop]: Starting to check reachability of 8 error locations. [2024-06-27 19:42:49,915 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-06-27 19:42:49,915 INFO L124 PetriNetUnfolderBase]: 2/9 cut-off events. [2024-06-27 19:42:49,916 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-06-27 19:42:49,916 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 19:42:49,916 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2024-06-27 19:42:49,917 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 5 more)] === [2024-06-27 19:42:49,920 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 19:42:49,920 INFO L85 PathProgramCache]: Analyzing trace with hash -124526226, now seen corresponding path program 1 times [2024-06-27 19:42:49,926 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 19:42:49,927 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [249183503] [2024-06-27 19:42:49,927 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 19:42:49,927 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 19:42:50,037 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 19:42:50,235 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 19:42:50,235 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 19:42:50,236 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [249183503] [2024-06-27 19:42:50,236 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [249183503] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 19:42:50,236 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 19:42:50,237 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-06-27 19:42:50,238 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [572911426] [2024-06-27 19:42:50,239 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 19:42:50,245 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-06-27 19:42:50,248 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 19:42:50,266 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-06-27 19:42:50,267 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-06-27 19:42:50,295 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 22 out of 55 [2024-06-27 19:42:50,297 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 56 places, 49 transitions, 119 flow. Second operand has 3 states, 3 states have (on average 24.0) internal successors, (72), 3 states have internal predecessors, (72), 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) [2024-06-27 19:42:50,298 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 19:42:50,298 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 22 of 55 [2024-06-27 19:42:50,299 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 19:42:50,677 INFO L124 PetriNetUnfolderBase]: 1639/2607 cut-off events. [2024-06-27 19:42:50,677 INFO L125 PetriNetUnfolderBase]: For 158/158 co-relation queries the response was YES. [2024-06-27 19:42:50,686 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4961 conditions, 2607 events. 1639/2607 cut-off events. For 158/158 co-relation queries the response was YES. Maximal size of possible extension queue 189. Compared 15218 event pairs, 308 based on Foata normal form. 36/2490 useless extension candidates. Maximal degree in co-relation 4431. Up to 1758 conditions per place. [2024-06-27 19:42:50,700 INFO L140 encePairwiseOnDemand]: 48/55 looper letters, 47 selfloop transitions, 3 changer transitions 2/70 dead transitions. [2024-06-27 19:42:50,700 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 58 places, 70 transitions, 283 flow [2024-06-27 19:42:50,701 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-06-27 19:42:50,703 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-06-27 19:42:50,709 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 122 transitions. [2024-06-27 19:42:50,711 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.7393939393939394 [2024-06-27 19:42:50,712 INFO L175 Difference]: Start difference. First operand has 56 places, 49 transitions, 119 flow. Second operand 3 states and 122 transitions. [2024-06-27 19:42:50,713 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 58 places, 70 transitions, 283 flow [2024-06-27 19:42:50,718 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 51 places, 70 transitions, 259 flow, removed 0 selfloop flow, removed 7 redundant places. [2024-06-27 19:42:50,723 INFO L231 Difference]: Finished difference. Result has 52 places, 51 transitions, 131 flow [2024-06-27 19:42:50,724 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=55, PETRI_DIFFERENCE_MINUEND_FLOW=106, PETRI_DIFFERENCE_MINUEND_PLACES=49, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=49, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=46, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=131, PETRI_PLACES=52, PETRI_TRANSITIONS=51} [2024-06-27 19:42:50,728 INFO L281 CegarLoopForPetriNet]: 56 programPoint places, -4 predicate places. [2024-06-27 19:42:50,728 INFO L495 AbstractCegarLoop]: Abstraction has has 52 places, 51 transitions, 131 flow [2024-06-27 19:42:50,728 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 24.0) internal successors, (72), 3 states have internal predecessors, (72), 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) [2024-06-27 19:42:50,728 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 19:42:50,729 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 19:42:50,729 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-06-27 19:42:50,729 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 5 more)] === [2024-06-27 19:42:50,730 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 19:42:50,730 INFO L85 PathProgramCache]: Analyzing trace with hash -493343477, now seen corresponding path program 1 times [2024-06-27 19:42:50,731 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 19:42:50,731 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [527170242] [2024-06-27 19:42:50,731 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 19:42:50,731 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 19:42:50,759 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 19:42:50,824 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 19:42:50,824 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 19:42:50,824 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [527170242] [2024-06-27 19:42:50,824 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [527170242] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 19:42:50,824 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 19:42:50,825 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-06-27 19:42:50,825 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [688171907] [2024-06-27 19:42:50,825 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 19:42:50,826 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-06-27 19:42:50,826 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 19:42:50,826 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-06-27 19:42:50,840 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-06-27 19:42:50,872 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 22 out of 55 [2024-06-27 19:42:50,872 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 52 places, 51 transitions, 131 flow. Second operand has 4 states, 4 states have (on average 23.75) internal successors, (95), 4 states have internal predecessors, (95), 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) [2024-06-27 19:42:50,872 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 19:42:50,873 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 22 of 55 [2024-06-27 19:42:50,873 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 19:42:51,189 INFO L124 PetriNetUnfolderBase]: 1659/2680 cut-off events. [2024-06-27 19:42:51,189 INFO L125 PetriNetUnfolderBase]: For 534/612 co-relation queries the response was YES. [2024-06-27 19:42:51,194 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5818 conditions, 2680 events. 1659/2680 cut-off events. For 534/612 co-relation queries the response was YES. Maximal size of possible extension queue 196. Compared 16411 event pairs, 294 based on Foata normal form. 54/2642 useless extension candidates. Maximal degree in co-relation 1085. Up to 1295 conditions per place. [2024-06-27 19:42:51,204 INFO L140 encePairwiseOnDemand]: 48/55 looper letters, 62 selfloop transitions, 4 changer transitions 3/87 dead transitions. [2024-06-27 19:42:51,205 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 54 places, 87 transitions, 356 flow [2024-06-27 19:42:51,205 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-06-27 19:42:51,206 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-06-27 19:42:51,207 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 161 transitions. [2024-06-27 19:42:51,207 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.7318181818181818 [2024-06-27 19:42:51,207 INFO L175 Difference]: Start difference. First operand has 52 places, 51 transitions, 131 flow. Second operand 4 states and 161 transitions. [2024-06-27 19:42:51,208 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 54 places, 87 transitions, 356 flow [2024-06-27 19:42:51,209 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 53 places, 87 transitions, 353 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-06-27 19:42:51,210 INFO L231 Difference]: Finished difference. Result has 54 places, 51 transitions, 146 flow [2024-06-27 19:42:51,210 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=55, PETRI_DIFFERENCE_MINUEND_FLOW=124, PETRI_DIFFERENCE_MINUEND_PLACES=50, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=50, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=46, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=146, PETRI_PLACES=54, PETRI_TRANSITIONS=51} [2024-06-27 19:42:51,211 INFO L281 CegarLoopForPetriNet]: 56 programPoint places, -2 predicate places. [2024-06-27 19:42:51,211 INFO L495 AbstractCegarLoop]: Abstraction has has 54 places, 51 transitions, 146 flow [2024-06-27 19:42:51,211 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 23.75) internal successors, (95), 4 states have internal predecessors, (95), 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) [2024-06-27 19:42:51,211 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 19:42:51,211 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 19:42:51,212 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-06-27 19:42:51,212 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 5 more)] === [2024-06-27 19:42:51,212 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 19:42:51,212 INFO L85 PathProgramCache]: Analyzing trace with hash -1193069352, now seen corresponding path program 1 times [2024-06-27 19:42:51,212 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 19:42:51,213 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [829910215] [2024-06-27 19:42:51,213 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 19:42:51,213 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 19:42:51,223 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 19:42:51,310 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 19:42:51,310 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 19:42:51,310 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [829910215] [2024-06-27 19:42:51,311 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [829910215] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 19:42:51,311 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 19:42:51,311 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-06-27 19:42:51,311 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1781644210] [2024-06-27 19:42:51,311 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 19:42:51,311 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-06-27 19:42:51,312 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 19:42:51,312 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-06-27 19:42:51,312 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-06-27 19:42:51,343 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 22 out of 55 [2024-06-27 19:42:51,343 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 54 places, 51 transitions, 146 flow. Second operand has 4 states, 4 states have (on average 24.5) internal successors, (98), 4 states have internal predecessors, (98), 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) [2024-06-27 19:42:51,343 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 19:42:51,343 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 22 of 55 [2024-06-27 19:42:51,343 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 19:42:51,650 INFO L124 PetriNetUnfolderBase]: 1711/2854 cut-off events. [2024-06-27 19:42:51,651 INFO L125 PetriNetUnfolderBase]: For 1553/1657 co-relation queries the response was YES. [2024-06-27 19:42:51,657 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6452 conditions, 2854 events. 1711/2854 cut-off events. For 1553/1657 co-relation queries the response was YES. Maximal size of possible extension queue 204. Compared 18397 event pairs, 385 based on Foata normal form. 52/2826 useless extension candidates. Maximal degree in co-relation 2399. Up to 1408 conditions per place. [2024-06-27 19:42:51,664 INFO L140 encePairwiseOnDemand]: 49/55 looper letters, 60 selfloop transitions, 4 changer transitions 6/88 dead transitions. [2024-06-27 19:42:51,665 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 57 places, 88 transitions, 379 flow [2024-06-27 19:42:51,665 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-06-27 19:42:51,665 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-06-27 19:42:51,667 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 160 transitions. [2024-06-27 19:42:51,668 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.7272727272727273 [2024-06-27 19:42:51,669 INFO L175 Difference]: Start difference. First operand has 54 places, 51 transitions, 146 flow. Second operand 4 states and 160 transitions. [2024-06-27 19:42:51,669 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 57 places, 88 transitions, 379 flow [2024-06-27 19:42:51,672 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 55 places, 88 transitions, 373 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-06-27 19:42:51,674 INFO L231 Difference]: Finished difference. Result has 56 places, 52 transitions, 162 flow [2024-06-27 19:42:51,674 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=55, PETRI_DIFFERENCE_MINUEND_FLOW=140, PETRI_DIFFERENCE_MINUEND_PLACES=52, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=51, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=47, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=162, PETRI_PLACES=56, PETRI_TRANSITIONS=52} [2024-06-27 19:42:51,675 INFO L281 CegarLoopForPetriNet]: 56 programPoint places, 0 predicate places. [2024-06-27 19:42:51,675 INFO L495 AbstractCegarLoop]: Abstraction has has 56 places, 52 transitions, 162 flow [2024-06-27 19:42:51,675 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 24.5) internal successors, (98), 4 states have internal predecessors, (98), 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) [2024-06-27 19:42:51,675 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 19:42:51,676 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 19:42:51,676 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-06-27 19:42:51,676 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 5 more)] === [2024-06-27 19:42:51,676 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 19:42:51,676 INFO L85 PathProgramCache]: Analyzing trace with hash 1240052341, now seen corresponding path program 1 times [2024-06-27 19:42:51,677 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 19:42:51,677 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2110178751] [2024-06-27 19:42:51,677 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 19:42:51,677 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 19:42:51,697 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 19:42:51,786 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 19:42:51,786 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 19:42:51,787 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2110178751] [2024-06-27 19:42:51,787 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2110178751] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 19:42:51,787 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 19:42:51,787 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-06-27 19:42:51,787 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [23725617] [2024-06-27 19:42:51,787 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 19:42:51,788 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-06-27 19:42:51,788 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 19:42:51,788 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-06-27 19:42:51,789 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-06-27 19:42:51,789 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 26 out of 55 [2024-06-27 19:42:51,789 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 56 places, 52 transitions, 162 flow. Second operand has 4 states, 4 states have (on average 28.5) internal successors, (114), 4 states have internal predecessors, (114), 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) [2024-06-27 19:42:51,789 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 19:42:51,789 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 26 of 55 [2024-06-27 19:42:51,790 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 19:42:52,087 INFO L124 PetriNetUnfolderBase]: 2082/3464 cut-off events. [2024-06-27 19:42:52,087 INFO L125 PetriNetUnfolderBase]: For 3094/3106 co-relation queries the response was YES. [2024-06-27 19:42:52,094 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8087 conditions, 3464 events. 2082/3464 cut-off events. For 3094/3106 co-relation queries the response was YES. Maximal size of possible extension queue 229. Compared 23533 event pairs, 1578 based on Foata normal form. 158/3384 useless extension candidates. Maximal degree in co-relation 4387. Up to 2203 conditions per place. [2024-06-27 19:42:52,103 INFO L140 encePairwiseOnDemand]: 49/55 looper letters, 30 selfloop transitions, 2 changer transitions 24/77 dead transitions. [2024-06-27 19:42:52,104 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 60 places, 77 transitions, 341 flow [2024-06-27 19:42:52,104 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-06-27 19:42:52,104 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-06-27 19:42:52,105 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 183 transitions. [2024-06-27 19:42:52,105 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6654545454545454 [2024-06-27 19:42:52,105 INFO L175 Difference]: Start difference. First operand has 56 places, 52 transitions, 162 flow. Second operand 5 states and 183 transitions. [2024-06-27 19:42:52,105 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 60 places, 77 transitions, 341 flow [2024-06-27 19:42:52,107 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 58 places, 77 transitions, 334 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-06-27 19:42:52,108 INFO L231 Difference]: Finished difference. Result has 61 places, 53 transitions, 176 flow [2024-06-27 19:42:52,108 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=55, PETRI_DIFFERENCE_MINUEND_FLOW=156, PETRI_DIFFERENCE_MINUEND_PLACES=54, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=52, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=50, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=176, PETRI_PLACES=61, PETRI_TRANSITIONS=53} [2024-06-27 19:42:52,109 INFO L281 CegarLoopForPetriNet]: 56 programPoint places, 5 predicate places. [2024-06-27 19:42:52,109 INFO L495 AbstractCegarLoop]: Abstraction has has 61 places, 53 transitions, 176 flow [2024-06-27 19:42:52,109 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 28.5) internal successors, (114), 4 states have internal predecessors, (114), 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) [2024-06-27 19:42:52,109 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 19:42:52,109 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 19:42:52,110 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-06-27 19:42:52,110 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 5 more)] === [2024-06-27 19:42:52,110 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 19:42:52,110 INFO L85 PathProgramCache]: Analyzing trace with hash 82246715, now seen corresponding path program 1 times [2024-06-27 19:42:52,110 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 19:42:52,111 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [900443354] [2024-06-27 19:42:52,111 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 19:42:52,111 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 19:42:52,123 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 19:42:52,180 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-06-27 19:42:52,180 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 19:42:52,181 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [900443354] [2024-06-27 19:42:52,181 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [900443354] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 19:42:52,181 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 19:42:52,181 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-06-27 19:42:52,181 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1580884007] [2024-06-27 19:42:52,181 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 19:42:52,182 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-06-27 19:42:52,182 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 19:42:52,182 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-06-27 19:42:52,182 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-06-27 19:42:52,183 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 26 out of 55 [2024-06-27 19:42:52,183 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 61 places, 53 transitions, 176 flow. Second operand has 4 states, 4 states have (on average 28.75) internal successors, (115), 4 states have internal predecessors, (115), 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) [2024-06-27 19:42:52,183 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 19:42:52,183 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 26 of 55 [2024-06-27 19:42:52,183 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 19:42:52,473 INFO L124 PetriNetUnfolderBase]: 2128/3566 cut-off events. [2024-06-27 19:42:52,473 INFO L125 PetriNetUnfolderBase]: For 3253/3265 co-relation queries the response was YES. [2024-06-27 19:42:52,482 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8609 conditions, 3566 events. 2128/3566 cut-off events. For 3253/3265 co-relation queries the response was YES. Maximal size of possible extension queue 237. Compared 24628 event pairs, 1630 based on Foata normal form. 140/3465 useless extension candidates. Maximal degree in co-relation 8592. Up to 2204 conditions per place. [2024-06-27 19:42:52,491 INFO L140 encePairwiseOnDemand]: 50/55 looper letters, 31 selfloop transitions, 2 changer transitions 22/76 dead transitions. [2024-06-27 19:42:52,492 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 62 places, 76 transitions, 354 flow [2024-06-27 19:42:52,492 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-06-27 19:42:52,492 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-06-27 19:42:52,493 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 155 transitions. [2024-06-27 19:42:52,493 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.7045454545454546 [2024-06-27 19:42:52,493 INFO L175 Difference]: Start difference. First operand has 61 places, 53 transitions, 176 flow. Second operand 4 states and 155 transitions. [2024-06-27 19:42:52,493 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 62 places, 76 transitions, 354 flow [2024-06-27 19:42:52,496 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 60 places, 76 transitions, 346 flow, removed 3 selfloop flow, removed 2 redundant places. [2024-06-27 19:42:52,497 INFO L231 Difference]: Finished difference. Result has 62 places, 54 transitions, 188 flow [2024-06-27 19:42:52,497 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=55, PETRI_DIFFERENCE_MINUEND_FLOW=170, PETRI_DIFFERENCE_MINUEND_PLACES=57, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=53, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=51, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=188, PETRI_PLACES=62, PETRI_TRANSITIONS=54} [2024-06-27 19:42:52,497 INFO L281 CegarLoopForPetriNet]: 56 programPoint places, 6 predicate places. [2024-06-27 19:42:52,497 INFO L495 AbstractCegarLoop]: Abstraction has has 62 places, 54 transitions, 188 flow [2024-06-27 19:42:52,498 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 28.75) internal successors, (115), 4 states have internal predecessors, (115), 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) [2024-06-27 19:42:52,498 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 19:42:52,498 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] [2024-06-27 19:42:52,498 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-06-27 19:42:52,498 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 5 more)] === [2024-06-27 19:42:52,498 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 19:42:52,499 INFO L85 PathProgramCache]: Analyzing trace with hash 864311053, now seen corresponding path program 1 times [2024-06-27 19:42:52,499 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 19:42:52,499 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1134973393] [2024-06-27 19:42:52,499 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 19:42:52,499 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 19:42:52,512 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 19:42:52,569 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-06-27 19:42:52,569 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 19:42:52,569 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1134973393] [2024-06-27 19:42:52,570 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1134973393] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 19:42:52,570 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 19:42:52,570 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-06-27 19:42:52,570 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [945255516] [2024-06-27 19:42:52,570 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 19:42:52,570 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-06-27 19:42:52,571 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 19:42:52,571 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-06-27 19:42:52,571 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-06-27 19:42:52,597 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 22 out of 55 [2024-06-27 19:42:52,598 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 62 places, 54 transitions, 188 flow. Second operand has 5 states, 5 states have (on average 24.6) internal successors, (123), 5 states have internal predecessors, (123), 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) [2024-06-27 19:42:52,598 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 19:42:52,598 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 22 of 55 [2024-06-27 19:42:52,598 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 19:42:52,952 INFO L124 PetriNetUnfolderBase]: 2091/3526 cut-off events. [2024-06-27 19:42:52,952 INFO L125 PetriNetUnfolderBase]: For 3148/3252 co-relation queries the response was YES. [2024-06-27 19:42:52,961 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8830 conditions, 3526 events. 2091/3526 cut-off events. For 3148/3252 co-relation queries the response was YES. Maximal size of possible extension queue 247. Compared 23629 event pairs, 376 based on Foata normal form. 52/3500 useless extension candidates. Maximal degree in co-relation 8807. Up to 1342 conditions per place. [2024-06-27 19:42:52,971 INFO L140 encePairwiseOnDemand]: 49/55 looper letters, 81 selfloop transitions, 4 changer transitions 5/108 dead transitions. [2024-06-27 19:42:52,971 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 65 places, 108 transitions, 519 flow [2024-06-27 19:42:52,972 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-06-27 19:42:52,972 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-06-27 19:42:52,972 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 200 transitions. [2024-06-27 19:42:52,973 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.7272727272727273 [2024-06-27 19:42:52,973 INFO L175 Difference]: Start difference. First operand has 62 places, 54 transitions, 188 flow. Second operand 5 states and 200 transitions. [2024-06-27 19:42:52,973 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 65 places, 108 transitions, 519 flow [2024-06-27 19:42:52,976 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 64 places, 108 transitions, 515 flow, removed 1 selfloop flow, removed 1 redundant places. [2024-06-27 19:42:52,977 INFO L231 Difference]: Finished difference. Result has 65 places, 54 transitions, 199 flow [2024-06-27 19:42:52,977 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=55, PETRI_DIFFERENCE_MINUEND_FLOW=184, PETRI_DIFFERENCE_MINUEND_PLACES=60, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=54, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=50, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=199, PETRI_PLACES=65, PETRI_TRANSITIONS=54} [2024-06-27 19:42:52,978 INFO L281 CegarLoopForPetriNet]: 56 programPoint places, 9 predicate places. [2024-06-27 19:42:52,978 INFO L495 AbstractCegarLoop]: Abstraction has has 65 places, 54 transitions, 199 flow [2024-06-27 19:42:52,978 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 24.6) internal successors, (123), 5 states have internal predecessors, (123), 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) [2024-06-27 19:42:52,978 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 19:42:52,979 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] [2024-06-27 19:42:52,979 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-06-27 19:42:52,979 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 5 more)] === [2024-06-27 19:42:52,979 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 19:42:52,979 INFO L85 PathProgramCache]: Analyzing trace with hash -1543931225, now seen corresponding path program 2 times [2024-06-27 19:42:52,979 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 19:42:52,980 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1487334364] [2024-06-27 19:42:52,980 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 19:42:52,980 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 19:42:52,992 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 19:42:53,051 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-06-27 19:42:53,051 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 19:42:53,052 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1487334364] [2024-06-27 19:42:53,052 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1487334364] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 19:42:53,052 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 19:42:53,052 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-06-27 19:42:53,052 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1224092330] [2024-06-27 19:42:53,052 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 19:42:53,053 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-06-27 19:42:53,053 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 19:42:53,053 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-06-27 19:42:53,053 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-06-27 19:42:53,086 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 22 out of 55 [2024-06-27 19:42:53,086 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 65 places, 54 transitions, 199 flow. Second operand has 5 states, 5 states have (on average 24.6) internal successors, (123), 5 states have internal predecessors, (123), 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) [2024-06-27 19:42:53,086 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 19:42:53,086 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 22 of 55 [2024-06-27 19:42:53,087 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 19:42:53,450 INFO L124 PetriNetUnfolderBase]: 1931/3294 cut-off events. [2024-06-27 19:42:53,450 INFO L125 PetriNetUnfolderBase]: For 3948/3948 co-relation queries the response was YES. [2024-06-27 19:42:53,459 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8299 conditions, 3294 events. 1931/3294 cut-off events. For 3948/3948 co-relation queries the response was YES. Maximal size of possible extension queue 235. Compared 22067 event pairs, 333 based on Foata normal form. 52/3293 useless extension candidates. Maximal degree in co-relation 8274. Up to 1136 conditions per place. [2024-06-27 19:42:53,462 INFO L140 encePairwiseOnDemand]: 49/55 looper letters, 0 selfloop transitions, 0 changer transitions 105/105 dead transitions. [2024-06-27 19:42:53,462 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 66 places, 105 transitions, 494 flow [2024-06-27 19:42:53,463 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-06-27 19:42:53,463 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-06-27 19:42:53,463 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 197 transitions. [2024-06-27 19:42:53,463 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.7163636363636363 [2024-06-27 19:42:53,464 INFO L175 Difference]: Start difference. First operand has 65 places, 54 transitions, 199 flow. Second operand 5 states and 197 transitions. [2024-06-27 19:42:53,464 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 66 places, 105 transitions, 494 flow [2024-06-27 19:42:53,469 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 62 places, 105 transitions, 486 flow, removed 0 selfloop flow, removed 4 redundant places. [2024-06-27 19:42:53,469 INFO L231 Difference]: Finished difference. Result has 62 places, 0 transitions, 0 flow [2024-06-27 19:42:53,469 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=55, PETRI_DIFFERENCE_MINUEND_FLOW=161, PETRI_DIFFERENCE_MINUEND_PLACES=58, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=51, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=51, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=0, PETRI_PLACES=62, PETRI_TRANSITIONS=0} [2024-06-27 19:42:53,470 INFO L281 CegarLoopForPetriNet]: 56 programPoint places, 6 predicate places. [2024-06-27 19:42:53,470 INFO L495 AbstractCegarLoop]: Abstraction has has 62 places, 0 transitions, 0 flow [2024-06-27 19:42:53,470 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 24.6) internal successors, (123), 5 states have internal predecessors, (123), 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) [2024-06-27 19:42:53,472 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT (7 of 8 remaining) [2024-06-27 19:42:53,473 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (6 of 8 remaining) [2024-06-27 19:42:53,473 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (5 of 8 remaining) [2024-06-27 19:42:53,473 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr3ASSERT_VIOLATIONWITNESS_INVARIANT (4 of 8 remaining) [2024-06-27 19:42:53,473 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (3 of 8 remaining) [2024-06-27 19:42:53,473 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (2 of 8 remaining) [2024-06-27 19:42:53,473 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 8 remaining) [2024-06-27 19:42:53,473 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr3INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 8 remaining) [2024-06-27 19:42:53,474 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-06-27 19:42:53,474 INFO L445 BasicCegarLoop]: Path program histogram: [2, 1, 1, 1, 1, 1] [2024-06-27 19:42:53,476 INFO L229 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2024-06-27 19:42:53,476 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2024-06-27 19:42:53,479 INFO L507 ceAbstractionStarter]: Automizer considered 4 witness invariants [2024-06-27 19:42:53,479 INFO L508 ceAbstractionStarter]: WitnessConsidered=4 [2024-06-27 19:42:53,480 INFO L201 PluginConnector]: Adding new model witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 27.06 07:42:53 BasicIcfg [2024-06-27 19:42:53,480 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2024-06-27 19:42:53,480 INFO L158 Benchmark]: Toolchain (without parser) took 4854.38ms. Allocated memory was 159.4MB in the beginning and 497.0MB in the end (delta: 337.6MB). Free memory was 99.1MB in the beginning and 278.7MB in the end (delta: -179.6MB). Peak memory consumption was 203.2MB. Max. memory is 16.1GB. [2024-06-27 19:42:53,480 INFO L158 Benchmark]: CDTParser took 0.15ms. Allocated memory is still 159.4MB. Free memory is still 119.2MB. There was no memory consumed. Max. memory is 16.1GB. [2024-06-27 19:42:53,481 INFO L158 Benchmark]: Witness Parser took 0.40ms. Allocated memory is still 159.4MB. Free memory is still 102.4MB. There was no memory consumed. Max. memory is 16.1GB. [2024-06-27 19:42:53,481 INFO L158 Benchmark]: CACSL2BoogieTranslator took 303.21ms. Allocated memory is still 159.4MB. Free memory was 99.1MB in the beginning and 82.7MB in the end (delta: 16.4MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. [2024-06-27 19:42:53,481 INFO L158 Benchmark]: Boogie Procedure Inliner took 35.24ms. Allocated memory is still 159.4MB. Free memory was 82.4MB in the beginning and 79.9MB in the end (delta: 2.5MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2024-06-27 19:42:53,481 INFO L158 Benchmark]: Boogie Preprocessor took 62.61ms. Allocated memory is still 159.4MB. Free memory was 79.9MB in the beginning and 76.6MB in the end (delta: 3.3MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2024-06-27 19:42:53,482 INFO L158 Benchmark]: RCFGBuilder took 722.25ms. Allocated memory was 159.4MB in the beginning and 253.8MB in the end (delta: 94.4MB). Free memory was 76.3MB in the beginning and 147.6MB in the end (delta: -71.3MB). Peak memory consumption was 33.7MB. Max. memory is 16.1GB. [2024-06-27 19:42:53,482 INFO L158 Benchmark]: TraceAbstraction took 3726.37ms. Allocated memory was 253.8MB in the beginning and 497.0MB in the end (delta: 243.3MB). Free memory was 147.6MB in the beginning and 278.7MB in the end (delta: -131.1MB). Peak memory consumption was 154.8MB. Max. memory is 16.1GB. [2024-06-27 19:42:53,483 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.15ms. Allocated memory is still 159.4MB. Free memory is still 119.2MB. There was no memory consumed. Max. memory is 16.1GB. * Witness Parser took 0.40ms. Allocated memory is still 159.4MB. Free memory is still 102.4MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 303.21ms. Allocated memory is still 159.4MB. Free memory was 99.1MB in the beginning and 82.7MB in the end (delta: 16.4MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 35.24ms. Allocated memory is still 159.4MB. Free memory was 82.4MB in the beginning and 79.9MB in the end (delta: 2.5MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 62.61ms. Allocated memory is still 159.4MB. Free memory was 79.9MB in the beginning and 76.6MB in the end (delta: 3.3MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * RCFGBuilder took 722.25ms. Allocated memory was 159.4MB in the beginning and 253.8MB in the end (delta: 94.4MB). Free memory was 76.3MB in the beginning and 147.6MB in the end (delta: -71.3MB). Peak memory consumption was 33.7MB. Max. memory is 16.1GB. * TraceAbstraction took 3726.37ms. Allocated memory was 253.8MB in the beginning and 497.0MB in the end (delta: 243.3MB). Free memory was 147.6MB in the beginning and 278.7MB in the end (delta: -131.1MB). Peak memory consumption was 154.8MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 139]: invariant of correctness witness holds For all program executions holds that invariant of correctness witness holds at this location - PositiveResult [Line: 140]: invariant of correctness witness holds For all program executions holds that invariant of correctness witness holds at this location - PositiveResult [Line: 141]: invariant of correctness witness holds For all program executions holds that invariant of correctness witness holds at this location - PositiveResult [Line: 142]: invariant of correctness witness holds For all program executions holds that invariant of correctness witness holds at this location - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 9 procedures, 78 locations, 8 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 0.0s, RemoveRedundantFlowTime: 0.0s, RemoveRedundantFlowUnfoldingTime: 0.0s, BackfoldingTime: 0.0s, BackfoldingUnfoldingTime: 0.0s, FlowIncreaseByBackfolding: 0, BasicCegarLoop: OverallTime: 3.6s, OverallIterations: 7, TraceHistogramMax: 1, PathProgramHistogramMax: 2, EmptinessCheckTime: 0.0s, AutomataDifference: 2.7s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 437 SdHoareTripleChecker+Valid, 0.6s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 329 mSDsluCounter, 16 SdHoareTripleChecker+Invalid, 0.5s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 0 mSDsCounter, 30 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 1110 IncrementalHoareTripleChecker+Invalid, 1140 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 30 mSolverCounterUnsat, 16 mSDtfsCounter, 1110 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 19 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=199occurred in iteration=6, InterpolantAutomatonStates: 30, 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, 0.6s InterpolantComputationTime, 109 NumberOfCodeBlocks, 109 NumberOfCodeBlocksAsserted, 7 NumberOfCheckSat, 102 ConstructedInterpolants, 0 QuantifiedInterpolants, 562 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 7 InterpolantComputations, 7 PerfectInterpolantSequences, 5/5 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 4 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2024-06-27 19:42:53,514 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Ended with exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: TRUE