./Ultimate.py --spec ../../../trunk/examples/svcomp/properties/unreach-call.prp --file ../../../trunk/examples/svcomp/weaver/popl20-simple-array-sum.wvr.c --full-output --witness-type correctness_witness --witnessparser.only.consider.loop.invariants false --cacsl2boogietranslator.check.unreachability.of.reach_error.function false --validate ./goblint.2024-05-21_14-57-05.files/mutex-meet/popl20-simple-array-sum.wvr.yml/witness.yml --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version bcb38a6f 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-simple-array-sum.wvr.c ./goblint.2024-05-21_14-57-05.files/mutex-meet/popl20-simple-array-sum.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-bcb38a6-m [2024-06-04 16:28:35,819 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-06-04 16:28:35,881 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-06-04 16:28:35,887 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-06-04 16:28:35,887 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-06-04 16:28:35,910 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-06-04 16:28:35,910 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-06-04 16:28:35,910 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-06-04 16:28:35,911 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-06-04 16:28:35,915 INFO L153 SettingsManager]: * Use memory slicer=true [2024-06-04 16:28:35,915 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-06-04 16:28:35,916 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-06-04 16:28:35,916 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-06-04 16:28:35,917 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-06-04 16:28:35,917 INFO L153 SettingsManager]: * Use SBE=true [2024-06-04 16:28:35,918 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-06-04 16:28:35,918 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-06-04 16:28:35,918 INFO L153 SettingsManager]: * sizeof long=4 [2024-06-04 16:28:35,919 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-06-04 16:28:35,919 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-06-04 16:28:35,920 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-06-04 16:28:35,920 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-06-04 16:28:35,920 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-06-04 16:28:35,920 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-06-04 16:28:35,921 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-06-04 16:28:35,921 INFO L153 SettingsManager]: * sizeof long double=12 [2024-06-04 16:28:35,921 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-06-04 16:28:35,921 INFO L153 SettingsManager]: * Use constant arrays=true [2024-06-04 16:28:35,922 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-06-04 16:28:35,922 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-06-04 16:28:35,923 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-06-04 16:28:35,923 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-06-04 16:28:35,923 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-06-04 16:28:35,923 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-06-04 16:28:35,923 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-06-04 16:28:35,923 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-06-04 16:28:35,924 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-06-04 16:28:35,924 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-06-04 16:28:35,924 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-06-04 16:28:35,924 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-06-04 16:28:35,924 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2024-06-04 16:28:35,924 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-06-04 16:28:35,924 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-06-04 16:28:35,925 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessparser: Only consider loop invariants -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Check unreachability of reach_error function -> false [2024-06-04 16:28:36,147 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-06-04 16:28:36,169 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-06-04 16:28:36,172 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-06-04 16:28:36,173 INFO L270 PluginConnector]: Initializing Witness Parser... [2024-06-04 16:28:36,173 INFO L274 PluginConnector]: Witness Parser initialized [2024-06-04 16:28:36,174 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/./goblint.2024-05-21_14-57-05.files/mutex-meet/popl20-simple-array-sum.wvr.yml/witness.yml [2024-06-04 16:28:36,241 INFO L270 PluginConnector]: Initializing CDTParser... [2024-06-04 16:28:36,242 INFO L274 PluginConnector]: CDTParser initialized [2024-06-04 16:28:36,243 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/weaver/popl20-simple-array-sum.wvr.c [2024-06-04 16:28:37,317 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-06-04 16:28:37,484 INFO L384 CDTParser]: Found 1 translation units. [2024-06-04 16:28:37,485 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/weaver/popl20-simple-array-sum.wvr.c [2024-06-04 16:28:37,492 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/01995c0a2/232b62fdae8e42a5b316e81a9d9ad642/FLAGaba1b8c83 [2024-06-04 16:28:37,505 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/01995c0a2/232b62fdae8e42a5b316e81a9d9ad642 [2024-06-04 16:28:37,505 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-06-04 16:28:37,507 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2024-06-04 16:28:37,508 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-06-04 16:28:37,508 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-06-04 16:28:37,512 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-06-04 16:28:37,512 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 04.06 04:28:36" (1/2) ... [2024-06-04 16:28:37,513 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3bb92391 and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 04.06 04:28:37, skipping insertion in model container [2024-06-04 16:28:37,514 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 04.06 04:28:36" (1/2) ... [2024-06-04 16:28:37,515 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@262f3dde and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 04.06 04:28:37, skipping insertion in model container [2024-06-04 16:28:37,515 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 04.06 04:28:37" (2/2) ... [2024-06-04 16:28:37,516 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3bb92391 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.06 04:28:37, skipping insertion in model container [2024-06-04 16:28:37,516 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 04.06 04:28:37" (2/2) ... [2024-06-04 16:28:37,516 INFO L83 nessWitnessExtractor]: Extracting all invariants from correctness witness [2024-06-04 16:28:37,535 INFO L95 edCorrectnessWitness]: Found the following entries in the witness: [2024-06-04 16:28:37,536 INFO L97 edCorrectnessWitness]: Location invariant before [L97-L97] ((! multithreaded || (0 <= p && p <= 2147483646)) && (! multithreaded || ((((2147483648LL + (long long )N) + (long long )p >= 0LL && (2147483647LL - (long long )N) + (long long )p >= 0LL) && (4294967294LL + (long long )N) - (long long )p >= 0LL) && (4294967293LL - (long long )N) - (long long )p >= 0LL))) && (! multithreaded || (0 <= p && p <= 2147483646)) [2024-06-04 16:28:37,536 INFO L97 edCorrectnessWitness]: Location invariant before [L98-L98] ((! multithreaded || (0 <= p && p <= 2147483646)) && (! multithreaded || ((((2147483648LL + (long long )N) + (long long )p >= 0LL && (2147483647LL - (long long )N) + (long long )p >= 0LL) && (4294967294LL + (long long )N) - (long long )p >= 0LL) && (4294967293LL - (long long )N) - (long long )p >= 0LL))) && (! multithreaded || (0 <= p && p <= 2147483646)) [2024-06-04 16:28:37,536 INFO L97 edCorrectnessWitness]: Location invariant before [L96-L96] ((! multithreaded || (0 <= p && p <= 2147483646)) && (! multithreaded || ((((2147483648LL + (long long )N) + (long long )p >= 0LL && (2147483647LL - (long long )N) + (long long )p >= 0LL) && (4294967294LL + (long long )N) - (long long )p >= 0LL) && (4294967293LL - (long long )N) - (long long )p >= 0LL))) && (! multithreaded || (0 <= p && p <= 2147483646)) [2024-06-04 16:28:37,536 INFO L103 edCorrectnessWitness]: ghost_variable multithreaded = 0 [2024-06-04 16:28:37,536 INFO L106 edCorrectnessWitness]: ghost_update [L95-L95] multithreaded = 1; [2024-06-04 16:28:37,554 INFO L177 MainTranslator]: Built tables and reachable declarations [2024-06-04 16:28:37,698 INFO L207 PostProcessor]: Analyzing one entry point: main [2024-06-04 16:28:37,704 INFO L202 MainTranslator]: Completed pre-run Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local [2024-06-04 16:28:37,752 INFO L207 PostProcessor]: Analyzing one entry point: main [2024-06-04 16:28:37,771 INFO L206 MainTranslator]: Completed translation [2024-06-04 16:28:37,771 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.06 04:28:37 WrapperNode [2024-06-04 16:28:37,771 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-06-04 16:28:37,772 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-06-04 16:28:37,772 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-06-04 16:28:37,772 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-06-04 16:28:37,777 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.06 04:28:37" (1/1) ... [2024-06-04 16:28:37,783 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.06 04:28:37" (1/1) ... [2024-06-04 16:28:37,802 INFO L138 Inliner]: procedures = 25, calls = 29, calls flagged for inlining = 8, calls inlined = 10, statements flattened = 117 [2024-06-04 16:28:37,803 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-06-04 16:28:37,803 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-06-04 16:28:37,803 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-06-04 16:28:37,803 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-06-04 16:28:37,811 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.06 04:28:37" (1/1) ... [2024-06-04 16:28:37,811 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.06 04:28:37" (1/1) ... [2024-06-04 16:28:37,814 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.06 04:28:37" (1/1) ... [2024-06-04 16:28:37,830 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 3 writes are split as follows [0, 3]. [2024-06-04 16:28:37,831 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.06 04:28:37" (1/1) ... [2024-06-04 16:28:37,831 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.06 04:28:37" (1/1) ... [2024-06-04 16:28:37,836 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.06 04:28:37" (1/1) ... [2024-06-04 16:28:37,839 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.06 04:28:37" (1/1) ... [2024-06-04 16:28:37,840 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.06 04:28:37" (1/1) ... [2024-06-04 16:28:37,841 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.06 04:28:37" (1/1) ... [2024-06-04 16:28:37,843 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-06-04 16:28:37,844 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-06-04 16:28:37,844 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-06-04 16:28:37,844 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-06-04 16:28:37,845 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.06 04:28:37" (1/1) ... [2024-06-04 16:28:37,849 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-06-04 16:28:37,854 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-06-04 16:28:37,865 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) [2024-06-04 16:28:37,878 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 [2024-06-04 16:28:37,889 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-06-04 16:28:37,889 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2024-06-04 16:28:37,889 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2024-06-04 16:28:37,889 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2024-06-04 16:28:37,889 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2024-06-04 16:28:37,889 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2024-06-04 16:28:37,889 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2024-06-04 16:28:37,889 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-06-04 16:28:37,890 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-06-04 16:28:37,890 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-06-04 16:28:37,890 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2024-06-04 16:28:37,890 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2024-06-04 16:28:37,890 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2024-06-04 16:28:37,890 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2024-06-04 16:28:37,890 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-06-04 16:28:37,891 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-06-04 16:28:37,891 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2024-06-04 16:28:37,891 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2024-06-04 16:28:37,898 WARN L214 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2024-06-04 16:28:37,969 INFO L244 CfgBuilder]: Building ICFG [2024-06-04 16:28:37,970 INFO L270 CfgBuilder]: Building CFG for each procedure with an implementation [2024-06-04 16:28:38,177 INFO L289 CfgBuilder]: Ommited future-live optimization because the input is a concurrent program. [2024-06-04 16:28:38,177 INFO L293 CfgBuilder]: Performing block encoding [2024-06-04 16:28:38,408 INFO L315 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-06-04 16:28:38,408 INFO L320 CfgBuilder]: Removed 5 assume(true) statements. [2024-06-04 16:28:38,409 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 04.06 04:28:38 BoogieIcfgContainer [2024-06-04 16:28:38,409 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-06-04 16:28:38,411 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-06-04 16:28:38,411 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-06-04 16:28:38,414 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-06-04 16:28:38,414 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 04.06 04:28:36" (1/4) ... [2024-06-04 16:28:38,415 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@c41b8d1 and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CORRECTNESS_WITNESS 04.06 04:28:38, skipping insertion in model container [2024-06-04 16:28:38,415 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 04.06 04:28:37" (2/4) ... [2024-06-04 16:28:38,415 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@c41b8d1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 04.06 04:28:38, skipping insertion in model container [2024-06-04 16:28:38,415 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.06 04:28:37" (3/4) ... [2024-06-04 16:28:38,416 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@c41b8d1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 04.06 04:28:38, skipping insertion in model container [2024-06-04 16:28:38,420 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 04.06 04:28:38" (4/4) ... [2024-06-04 16:28:38,421 INFO L112 eAbstractionObserver]: Analyzing ICFG popl20-simple-array-sum.wvr.c [2024-06-04 16:28:38,435 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-06-04 16:28:38,435 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 3 error locations. [2024-06-04 16:28:38,436 INFO L522 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-06-04 16:28:38,478 INFO L144 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2024-06-04 16:28:38,509 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 48 places, 44 transitions, 109 flow [2024-06-04 16:28:38,545 INFO L124 PetriNetUnfolderBase]: 6/41 cut-off events. [2024-06-04 16:28:38,545 INFO L125 PetriNetUnfolderBase]: For 3/3 co-relation queries the response was YES. [2024-06-04 16:28:38,549 INFO L83 FinitePrefix]: Finished finitePrefix Result has 54 conditions, 41 events. 6/41 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 54 event pairs, 0 based on Foata normal form. 0/32 useless extension candidates. Maximal degree in co-relation 33. Up to 2 conditions per place. [2024-06-04 16:28:38,549 INFO L82 GeneralOperation]: Start removeDead. Operand has 48 places, 44 transitions, 109 flow [2024-06-04 16:28:38,552 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 43 places, 39 transitions, 93 flow [2024-06-04 16:28:38,565 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-06-04 16:28:38,574 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;@1a406c24, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-06-04 16:28:38,574 INFO L358 AbstractCegarLoop]: Starting to check reachability of 6 error locations. [2024-06-04 16:28:38,581 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-06-04 16:28:38,581 INFO L124 PetriNetUnfolderBase]: 3/11 cut-off events. [2024-06-04 16:28:38,581 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-06-04 16:28:38,582 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 16:28:38,582 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 16:28:38,583 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-04 16:28:38,587 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 16:28:38,587 INFO L85 PathProgramCache]: Analyzing trace with hash 696382408, now seen corresponding path program 1 times [2024-06-04 16:28:38,594 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 16:28:38,594 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1719151258] [2024-06-04 16:28:38,594 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 16:28:38,595 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 16:28:38,708 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 16:28:38,932 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 16:28:38,932 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 16:28:38,933 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1719151258] [2024-06-04 16:28:38,933 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1719151258] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 16:28:38,934 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 16:28:38,934 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-06-04 16:28:38,935 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [681276834] [2024-06-04 16:28:38,935 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 16:28:38,941 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-06-04 16:28:38,945 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 16:28:38,969 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-06-04 16:28:38,969 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-06-04 16:28:38,987 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 44 [2024-06-04 16:28:38,990 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 43 places, 39 transitions, 93 flow. Second operand has 3 states, 3 states have (on average 12.666666666666666) internal successors, (38), 3 states have internal predecessors, (38), 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) [2024-06-04 16:28:38,991 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 16:28:38,991 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 44 [2024-06-04 16:28:38,992 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 16:28:39,245 INFO L124 PetriNetUnfolderBase]: 996/1563 cut-off events. [2024-06-04 16:28:39,246 INFO L125 PetriNetUnfolderBase]: For 149/149 co-relation queries the response was YES. [2024-06-04 16:28:39,252 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3066 conditions, 1563 events. 996/1563 cut-off events. For 149/149 co-relation queries the response was YES. Maximal size of possible extension queue 80. Compared 7046 event pairs, 333 based on Foata normal form. 60/1432 useless extension candidates. Maximal degree in co-relation 2724. Up to 875 conditions per place. [2024-06-04 16:28:39,261 INFO L140 encePairwiseOnDemand]: 39/44 looper letters, 44 selfloop transitions, 2 changer transitions 1/54 dead transitions. [2024-06-04 16:28:39,261 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 44 places, 54 transitions, 226 flow [2024-06-04 16:28:39,262 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-06-04 16:28:39,264 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-06-04 16:28:39,270 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 80 transitions. [2024-06-04 16:28:39,272 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6060606060606061 [2024-06-04 16:28:39,273 INFO L175 Difference]: Start difference. First operand has 43 places, 39 transitions, 93 flow. Second operand 3 states and 80 transitions. [2024-06-04 16:28:39,274 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 44 places, 54 transitions, 226 flow [2024-06-04 16:28:39,278 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 39 places, 54 transitions, 212 flow, removed 0 selfloop flow, removed 5 redundant places. [2024-06-04 16:28:39,281 INFO L231 Difference]: Finished difference. Result has 40 places, 39 transitions, 96 flow [2024-06-04 16:28:39,283 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=82, PETRI_DIFFERENCE_MINUEND_PLACES=37, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=38, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=36, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=96, PETRI_PLACES=40, PETRI_TRANSITIONS=39} [2024-06-04 16:28:39,285 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, -3 predicate places. [2024-06-04 16:28:39,286 INFO L495 AbstractCegarLoop]: Abstraction has has 40 places, 39 transitions, 96 flow [2024-06-04 16:28:39,286 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 12.666666666666666) internal successors, (38), 3 states have internal predecessors, (38), 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) [2024-06-04 16:28:39,286 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 16:28:39,286 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 16:28:39,287 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-06-04 16:28:39,287 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-04 16:28:39,288 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 16:28:39,288 INFO L85 PathProgramCache]: Analyzing trace with hash -753419653, now seen corresponding path program 1 times [2024-06-04 16:28:39,288 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 16:28:39,288 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [801461587] [2024-06-04 16:28:39,289 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 16:28:39,289 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 16:28:39,324 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 16:28:39,497 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 16:28:39,497 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 16:28:39,497 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [801461587] [2024-06-04 16:28:39,497 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [801461587] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 16:28:39,498 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 16:28:39,498 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-06-04 16:28:39,498 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1503699126] [2024-06-04 16:28:39,498 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 16:28:39,499 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-06-04 16:28:39,499 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 16:28:39,500 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-06-04 16:28:39,500 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-06-04 16:28:39,521 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 44 [2024-06-04 16:28:39,522 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 40 places, 39 transitions, 96 flow. Second operand has 5 states, 5 states have (on average 12.8) internal successors, (64), 5 states have internal predecessors, (64), 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) [2024-06-04 16:28:39,522 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 16:28:39,522 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 44 [2024-06-04 16:28:39,522 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 16:28:39,763 INFO L124 PetriNetUnfolderBase]: 1400/2187 cut-off events. [2024-06-04 16:28:39,764 INFO L125 PetriNetUnfolderBase]: For 196/196 co-relation queries the response was YES. [2024-06-04 16:28:39,768 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4492 conditions, 2187 events. 1400/2187 cut-off events. For 196/196 co-relation queries the response was YES. Maximal size of possible extension queue 87. Compared 10215 event pairs, 413 based on Foata normal form. 72/2022 useless extension candidates. Maximal degree in co-relation 1196. Up to 874 conditions per place. [2024-06-04 16:28:39,776 INFO L140 encePairwiseOnDemand]: 37/44 looper letters, 58 selfloop transitions, 5 changer transitions 0/70 dead transitions. [2024-06-04 16:28:39,776 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 44 places, 70 transitions, 293 flow [2024-06-04 16:28:39,777 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-06-04 16:28:39,777 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-06-04 16:28:39,778 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 117 transitions. [2024-06-04 16:28:39,779 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5318181818181819 [2024-06-04 16:28:39,779 INFO L175 Difference]: Start difference. First operand has 40 places, 39 transitions, 96 flow. Second operand 5 states and 117 transitions. [2024-06-04 16:28:39,779 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 44 places, 70 transitions, 293 flow [2024-06-04 16:28:39,783 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 43 places, 70 transitions, 291 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-06-04 16:28:39,784 INFO L231 Difference]: Finished difference. Result has 45 places, 42 transitions, 134 flow [2024-06-04 16:28:39,786 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=94, PETRI_DIFFERENCE_MINUEND_PLACES=39, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=39, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=34, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=134, PETRI_PLACES=45, PETRI_TRANSITIONS=42} [2024-06-04 16:28:39,788 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 2 predicate places. [2024-06-04 16:28:39,788 INFO L495 AbstractCegarLoop]: Abstraction has has 45 places, 42 transitions, 134 flow [2024-06-04 16:28:39,788 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 12.8) internal successors, (64), 5 states have internal predecessors, (64), 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) [2024-06-04 16:28:39,788 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 16:28:39,792 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 16:28:39,792 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-06-04 16:28:39,796 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-04 16:28:39,797 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 16:28:39,797 INFO L85 PathProgramCache]: Analyzing trace with hash -1231245986, now seen corresponding path program 1 times [2024-06-04 16:28:39,797 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 16:28:39,798 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1210222163] [2024-06-04 16:28:39,798 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 16:28:39,798 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 16:28:39,816 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 16:28:39,912 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-06-04 16:28:39,914 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 16:28:39,914 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1210222163] [2024-06-04 16:28:39,915 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1210222163] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 16:28:39,915 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 16:28:39,915 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-06-04 16:28:39,915 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1814428453] [2024-06-04 16:28:39,915 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 16:28:39,916 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-06-04 16:28:39,916 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 16:28:39,917 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-06-04 16:28:39,917 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-06-04 16:28:39,941 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 44 [2024-06-04 16:28:39,943 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 45 places, 42 transitions, 134 flow. Second operand has 5 states, 5 states have (on average 16.0) internal successors, (80), 5 states have internal predecessors, (80), 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) [2024-06-04 16:28:39,943 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 16:28:39,943 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 44 [2024-06-04 16:28:39,943 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 16:28:40,165 INFO L124 PetriNetUnfolderBase]: 1603/2699 cut-off events. [2024-06-04 16:28:40,166 INFO L125 PetriNetUnfolderBase]: For 890/905 co-relation queries the response was YES. [2024-06-04 16:28:40,171 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5884 conditions, 2699 events. 1603/2699 cut-off events. For 890/905 co-relation queries the response was YES. Maximal size of possible extension queue 96. Compared 13923 event pairs, 1130 based on Foata normal form. 44/2405 useless extension candidates. Maximal degree in co-relation 2683. Up to 1809 conditions per place. [2024-06-04 16:28:40,180 INFO L140 encePairwiseOnDemand]: 36/44 looper letters, 29 selfloop transitions, 4 changer transitions 39/83 dead transitions. [2024-06-04 16:28:40,180 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 50 places, 83 transitions, 377 flow [2024-06-04 16:28:40,181 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-04 16:28:40,181 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-04 16:28:40,181 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 149 transitions. [2024-06-04 16:28:40,182 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5643939393939394 [2024-06-04 16:28:40,182 INFO L175 Difference]: Start difference. First operand has 45 places, 42 transitions, 134 flow. Second operand 6 states and 149 transitions. [2024-06-04 16:28:40,182 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 50 places, 83 transitions, 377 flow [2024-06-04 16:28:40,183 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 49 places, 83 transitions, 376 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-06-04 16:28:40,184 INFO L231 Difference]: Finished difference. Result has 53 places, 44 transitions, 165 flow [2024-06-04 16:28:40,185 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=133, PETRI_DIFFERENCE_MINUEND_PLACES=44, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=42, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=38, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=165, PETRI_PLACES=53, PETRI_TRANSITIONS=44} [2024-06-04 16:28:40,185 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 10 predicate places. [2024-06-04 16:28:40,185 INFO L495 AbstractCegarLoop]: Abstraction has has 53 places, 44 transitions, 165 flow [2024-06-04 16:28:40,185 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 16.0) internal successors, (80), 5 states have internal predecessors, (80), 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) [2024-06-04 16:28:40,186 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 16:28:40,186 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 16:28:40,186 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-06-04 16:28:40,186 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-04 16:28:40,186 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 16:28:40,187 INFO L85 PathProgramCache]: Analyzing trace with hash 1718561039, now seen corresponding path program 1 times [2024-06-04 16:28:40,187 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 16:28:40,187 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1102934968] [2024-06-04 16:28:40,187 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 16:28:40,187 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 16:28:40,199 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 16:28:40,266 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-06-04 16:28:40,266 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 16:28:40,266 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1102934968] [2024-06-04 16:28:40,266 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1102934968] provided 0 perfect and 1 imperfect interpolant sequences [2024-06-04 16:28:40,266 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1967730541] [2024-06-04 16:28:40,267 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 16:28:40,267 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-06-04 16:28:40,267 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-06-04 16:28:40,268 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-06-04 16:28:40,298 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-06-04 16:28:40,344 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 16:28:40,346 INFO L262 TraceCheckSpWp]: Trace formula consists of 162 conjuncts, 8 conjunts are in the unsatisfiable core [2024-06-04 16:28:40,350 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-06-04 16:28:40,432 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 3 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-06-04 16:28:40,432 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-06-04 16:28:40,495 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 3 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-06-04 16:28:40,496 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1967730541] provided 0 perfect and 2 imperfect interpolant sequences [2024-06-04 16:28:40,496 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-06-04 16:28:40,496 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 13 [2024-06-04 16:28:40,496 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [403989425] [2024-06-04 16:28:40,496 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-06-04 16:28:40,497 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-06-04 16:28:40,497 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 16:28:40,497 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-06-04 16:28:40,498 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=56, Invalid=126, Unknown=0, NotChecked=0, Total=182 [2024-06-04 16:28:40,588 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 44 [2024-06-04 16:28:40,590 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 53 places, 44 transitions, 165 flow. Second operand has 14 states, 14 states have (on average 15.357142857142858) internal successors, (215), 14 states have internal predecessors, (215), 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) [2024-06-04 16:28:40,590 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 16:28:40,590 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 44 [2024-06-04 16:28:40,590 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 16:28:41,016 INFO L124 PetriNetUnfolderBase]: 2013/3344 cut-off events. [2024-06-04 16:28:41,017 INFO L125 PetriNetUnfolderBase]: For 1592/1607 co-relation queries the response was YES. [2024-06-04 16:28:41,023 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7655 conditions, 3344 events. 2013/3344 cut-off events. For 1592/1607 co-relation queries the response was YES. Maximal size of possible extension queue 122. Compared 17787 event pairs, 1215 based on Foata normal form. 44/2992 useless extension candidates. Maximal degree in co-relation 5044. Up to 1809 conditions per place. [2024-06-04 16:28:41,032 INFO L140 encePairwiseOnDemand]: 35/44 looper letters, 29 selfloop transitions, 6 changer transitions 56/102 dead transitions. [2024-06-04 16:28:41,032 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 59 places, 102 transitions, 527 flow [2024-06-04 16:28:41,033 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-04 16:28:41,033 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-04 16:28:41,033 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 220 transitions. [2024-06-04 16:28:41,034 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5 [2024-06-04 16:28:41,034 INFO L175 Difference]: Start difference. First operand has 53 places, 44 transitions, 165 flow. Second operand 10 states and 220 transitions. [2024-06-04 16:28:41,034 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 59 places, 102 transitions, 527 flow [2024-06-04 16:28:41,037 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 55 places, 102 transitions, 493 flow, removed 14 selfloop flow, removed 4 redundant places. [2024-06-04 16:28:41,039 INFO L231 Difference]: Finished difference. Result has 61 places, 46 transitions, 197 flow [2024-06-04 16:28:41,039 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=151, PETRI_DIFFERENCE_MINUEND_PLACES=46, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=44, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=38, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=197, PETRI_PLACES=61, PETRI_TRANSITIONS=46} [2024-06-04 16:28:41,039 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 18 predicate places. [2024-06-04 16:28:41,040 INFO L495 AbstractCegarLoop]: Abstraction has has 61 places, 46 transitions, 197 flow [2024-06-04 16:28:41,040 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 15.357142857142858) internal successors, (215), 14 states have internal predecessors, (215), 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) [2024-06-04 16:28:41,040 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 16:28:41,040 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 16:28:41,062 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2024-06-04 16:28:41,258 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-06-04 16:28:41,259 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-04 16:28:41,259 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 16:28:41,259 INFO L85 PathProgramCache]: Analyzing trace with hash -435050690, now seen corresponding path program 2 times [2024-06-04 16:28:41,260 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 16:28:41,260 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1608395657] [2024-06-04 16:28:41,260 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 16:28:41,260 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 16:28:41,280 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 16:28:41,450 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-06-04 16:28:41,451 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 16:28:41,451 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1608395657] [2024-06-04 16:28:41,451 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1608395657] provided 0 perfect and 1 imperfect interpolant sequences [2024-06-04 16:28:41,451 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2054687961] [2024-06-04 16:28:41,451 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-06-04 16:28:41,451 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-06-04 16:28:41,452 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-06-04 16:28:41,452 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-06-04 16:28:41,455 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-06-04 16:28:41,524 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-06-04 16:28:41,524 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-06-04 16:28:41,526 INFO L262 TraceCheckSpWp]: Trace formula consists of 176 conjuncts, 12 conjunts are in the unsatisfiable core [2024-06-04 16:28:41,527 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-06-04 16:28:41,656 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 4 proven. 2 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-06-04 16:28:41,656 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-06-04 16:28:41,861 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 3 proven. 3 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-06-04 16:28:41,862 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2054687961] provided 0 perfect and 2 imperfect interpolant sequences [2024-06-04 16:28:41,862 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-06-04 16:28:41,862 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 21 [2024-06-04 16:28:41,862 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1995196196] [2024-06-04 16:28:41,862 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-06-04 16:28:41,863 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2024-06-04 16:28:41,863 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 16:28:41,863 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2024-06-04 16:28:41,864 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=115, Invalid=391, Unknown=0, NotChecked=0, Total=506 [2024-06-04 16:28:42,027 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 44 [2024-06-04 16:28:42,027 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 61 places, 46 transitions, 197 flow. Second operand has 23 states, 23 states have (on average 11.869565217391305) internal successors, (273), 23 states have internal predecessors, (273), 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) [2024-06-04 16:28:42,027 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 16:28:42,028 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 44 [2024-06-04 16:28:42,028 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 16:28:43,005 INFO L124 PetriNetUnfolderBase]: 2762/4121 cut-off events. [2024-06-04 16:28:43,006 INFO L125 PetriNetUnfolderBase]: For 1810/1810 co-relation queries the response was YES. [2024-06-04 16:28:43,015 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10129 conditions, 4121 events. 2762/4121 cut-off events. For 1810/1810 co-relation queries the response was YES. Maximal size of possible extension queue 158. Compared 20474 event pairs, 258 based on Foata normal form. 268/3973 useless extension candidates. Maximal degree in co-relation 5469. Up to 732 conditions per place. [2024-06-04 16:28:43,019 INFO L140 encePairwiseOnDemand]: 32/44 looper letters, 0 selfloop transitions, 0 changer transitions 222/222 dead transitions. [2024-06-04 16:28:43,019 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 76 places, 222 transitions, 1098 flow [2024-06-04 16:28:43,020 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2024-06-04 16:28:43,020 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24 states. [2024-06-04 16:28:43,021 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 446 transitions. [2024-06-04 16:28:43,021 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.42234848484848486 [2024-06-04 16:28:43,021 INFO L175 Difference]: Start difference. First operand has 61 places, 46 transitions, 197 flow. Second operand 24 states and 446 transitions. [2024-06-04 16:28:43,022 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 76 places, 222 transitions, 1098 flow [2024-06-04 16:28:43,066 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 70 places, 222 transitions, 1040 flow, removed 26 selfloop flow, removed 6 redundant places. [2024-06-04 16:28:43,067 INFO L231 Difference]: Finished difference. Result has 70 places, 0 transitions, 0 flow [2024-06-04 16:28:43,068 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=157, PETRI_DIFFERENCE_MINUEND_PLACES=47, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=44, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=44, PETRI_DIFFERENCE_SUBTRAHEND_STATES=24, PETRI_FLOW=0, PETRI_PLACES=70, PETRI_TRANSITIONS=0} [2024-06-04 16:28:43,068 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 27 predicate places. [2024-06-04 16:28:43,068 INFO L495 AbstractCegarLoop]: Abstraction has has 70 places, 0 transitions, 0 flow [2024-06-04 16:28:43,068 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 11.869565217391305) internal successors, (273), 23 states have internal predecessors, (273), 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) [2024-06-04 16:28:43,070 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT (5 of 6 remaining) [2024-06-04 16:28:43,071 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (4 of 6 remaining) [2024-06-04 16:28:43,071 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (3 of 6 remaining) [2024-06-04 16:28:43,071 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (2 of 6 remaining) [2024-06-04 16:28:43,071 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 6 remaining) [2024-06-04 16:28:43,071 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 6 remaining) [2024-06-04 16:28:43,087 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2024-06-04 16:28:43,276 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-06-04 16:28:43,276 INFO L445 BasicCegarLoop]: Path program histogram: [2, 1, 1, 1] [2024-06-04 16:28:43,279 INFO L229 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2024-06-04 16:28:43,279 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2024-06-04 16:28:43,282 INFO L507 ceAbstractionStarter]: Automizer considered 3 witness invariants [2024-06-04 16:28:43,282 INFO L508 ceAbstractionStarter]: WitnessConsidered=3 [2024-06-04 16:28:43,283 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 04.06 04:28:43 BasicIcfg [2024-06-04 16:28:43,283 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2024-06-04 16:28:43,283 INFO L158 Benchmark]: Toolchain (without parser) took 5776.06ms. Allocated memory was 146.8MB in the beginning and 251.7MB in the end (delta: 104.9MB). Free memory was 99.2MB in the beginning and 195.4MB in the end (delta: -96.2MB). Peak memory consumption was 152.5MB. Max. memory is 16.1GB. [2024-06-04 16:28:43,283 INFO L158 Benchmark]: Witness Parser took 0.16ms. Allocated memory is still 146.8MB. Free memory is still 118.4MB. There was no memory consumed. Max. memory is 16.1GB. [2024-06-04 16:28:43,284 INFO L158 Benchmark]: CDTParser took 0.13ms. Allocated memory is still 146.8MB. Free memory is still 115.0MB. There was no memory consumed. Max. memory is 16.1GB. [2024-06-04 16:28:43,284 INFO L158 Benchmark]: CACSL2BoogieTranslator took 263.28ms. Allocated memory is still 146.8MB. Free memory was 98.5MB in the beginning and 83.2MB in the end (delta: 15.4MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. [2024-06-04 16:28:43,284 INFO L158 Benchmark]: Boogie Procedure Inliner took 30.89ms. Allocated memory is still 146.8MB. Free memory was 83.2MB in the beginning and 81.1MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2024-06-04 16:28:43,284 INFO L158 Benchmark]: Boogie Preprocessor took 40.11ms. Allocated memory is still 146.8MB. Free memory was 81.1MB in the beginning and 79.0MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2024-06-04 16:28:43,285 INFO L158 Benchmark]: RCFGBuilder took 565.29ms. Allocated memory is still 146.8MB. Free memory was 79.0MB in the beginning and 108.9MB in the end (delta: -29.9MB). Peak memory consumption was 51.8MB. Max. memory is 16.1GB. [2024-06-04 16:28:43,285 INFO L158 Benchmark]: TraceAbstraction took 4871.76ms. Allocated memory was 146.8MB in the beginning and 251.7MB in the end (delta: 104.9MB). Free memory was 107.9MB in the beginning and 195.4MB in the end (delta: -87.5MB). Peak memory consumption was 159.5MB. Max. memory is 16.1GB. [2024-06-04 16:28:43,286 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * Witness Parser took 0.16ms. Allocated memory is still 146.8MB. Free memory is still 118.4MB. There was no memory consumed. Max. memory is 16.1GB. * CDTParser took 0.13ms. Allocated memory is still 146.8MB. Free memory is still 115.0MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 263.28ms. Allocated memory is still 146.8MB. Free memory was 98.5MB in the beginning and 83.2MB in the end (delta: 15.4MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 30.89ms. Allocated memory is still 146.8MB. Free memory was 83.2MB in the beginning and 81.1MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 40.11ms. Allocated memory is still 146.8MB. Free memory was 81.1MB in the beginning and 79.0MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 565.29ms. Allocated memory is still 146.8MB. Free memory was 79.0MB in the beginning and 108.9MB in the end (delta: -29.9MB). Peak memory consumption was 51.8MB. Max. memory is 16.1GB. * TraceAbstraction took 4871.76ms. Allocated memory was 146.8MB in the beginning and 251.7MB in the end (delta: 104.9MB). Free memory was 107.9MB in the beginning and 195.4MB in the end (delta: -87.5MB). Peak memory consumption was 159.5MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 96]: invariant of correctness witness holds For all program executions holds that invariant of correctness witness holds at this location - PositiveResult [Line: 97]: invariant of correctness witness holds For all program executions holds that invariant of correctness witness holds at this location - PositiveResult [Line: 98]: 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 7 procedures, 59 locations, 6 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 0.0s, RemoveRedundantFlowTime: 0.0s, RemoveRedundantFlowUnfoldingTime: 0.0s, BackfoldingTime: 0.0s, BackfoldingUnfoldingTime: 0.0s, FlowIncreaseByBackfolding: 0, BasicCegarLoop: OverallTime: 4.8s, OverallIterations: 5, TraceHistogramMax: 2, PathProgramHistogramMax: 2, EmptinessCheckTime: 0.0s, AutomataDifference: 2.6s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.1s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 758 SdHoareTripleChecker+Valid, 1.1s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 710 mSDsluCounter, 112 SdHoareTripleChecker+Invalid, 0.9s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 110 mSDsCounter, 63 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 2176 IncrementalHoareTripleChecker+Invalid, 2239 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 63 mSolverCounterUnsat, 2 mSDtfsCounter, 2176 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 131 GetRequests, 65 SyntacticMatches, 1 SemanticMatches, 65 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 442 ImplicationChecksByTransitivity, 0.6s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=197occurred in iteration=4, InterpolantAutomatonStates: 48, 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, 1.2s InterpolantComputationTime, 130 NumberOfCodeBlocks, 130 NumberOfCodeBlocksAsserted, 8 NumberOfCheckSat, 165 ConstructedInterpolants, 0 QuantifiedInterpolants, 1048 SizeOfPredicates, 7 NumberOfNonLiveVariables, 338 ConjunctsInSsa, 20 ConjunctsInUnsatCore, 9 InterpolantComputations, 3 PerfectInterpolantSequences, 30/45 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 3 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2024-06-04 16:28:43,311 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