./Ultimate.py --spec ../../../trunk/examples/svcomp/properties/unreach-call.prp --file ../../../trunk/examples/svcomp/weaver/parallel-parallel-sum-equiv.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/parallel-parallel-sum-equiv.wvr.yml/witness.yml --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 76401ed0 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/parallel-parallel-sum-equiv.wvr.c ./goblint.2024-05-21_14-57-05.files/mutex-meet/parallel-parallel-sum-equiv.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-76401ed-m [2024-06-20 18:12:54,159 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-06-20 18:12:54,221 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-06-20 18:12:54,226 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-06-20 18:12:54,227 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-06-20 18:12:54,251 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-06-20 18:12:54,251 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-06-20 18:12:54,252 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-06-20 18:12:54,252 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-06-20 18:12:54,255 INFO L153 SettingsManager]: * Use memory slicer=true [2024-06-20 18:12:54,256 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-06-20 18:12:54,256 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-06-20 18:12:54,257 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-06-20 18:12:54,258 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-06-20 18:12:54,258 INFO L153 SettingsManager]: * Use SBE=true [2024-06-20 18:12:54,258 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-06-20 18:12:54,258 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-06-20 18:12:54,258 INFO L153 SettingsManager]: * sizeof long=4 [2024-06-20 18:12:54,259 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-06-20 18:12:54,259 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-06-20 18:12:54,260 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-06-20 18:12:54,260 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-06-20 18:12:54,260 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-06-20 18:12:54,261 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-06-20 18:12:54,261 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-06-20 18:12:54,261 INFO L153 SettingsManager]: * sizeof long double=12 [2024-06-20 18:12:54,261 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-06-20 18:12:54,262 INFO L153 SettingsManager]: * Use constant arrays=true [2024-06-20 18:12:54,262 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-06-20 18:12:54,262 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-06-20 18:12:54,263 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-06-20 18:12:54,263 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-06-20 18:12:54,263 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-06-20 18:12:54,264 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-06-20 18:12:54,264 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-06-20 18:12:54,264 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-06-20 18:12:54,264 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-06-20 18:12:54,264 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-06-20 18:12:54,264 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-06-20 18:12:54,265 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-06-20 18:12:54,265 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2024-06-20 18:12:54,265 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-06-20 18:12:54,265 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-06-20 18:12:54,265 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessparser: Only consider loop invariants -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Check unreachability of reach_error function -> false [2024-06-20 18:12:54,514 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-06-20 18:12:54,532 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-06-20 18:12:54,534 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-06-20 18:12:54,534 INFO L270 PluginConnector]: Initializing Witness Parser... [2024-06-20 18:12:54,535 INFO L274 PluginConnector]: Witness Parser initialized [2024-06-20 18:12:54,536 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/./goblint.2024-05-21_14-57-05.files/mutex-meet/parallel-parallel-sum-equiv.wvr.yml/witness.yml [2024-06-20 18:12:54,606 INFO L270 PluginConnector]: Initializing CDTParser... [2024-06-20 18:12:54,606 INFO L274 PluginConnector]: CDTParser initialized [2024-06-20 18:12:54,607 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/weaver/parallel-parallel-sum-equiv.wvr.c [2024-06-20 18:12:55,552 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-06-20 18:12:55,716 INFO L384 CDTParser]: Found 1 translation units. [2024-06-20 18:12:55,716 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/weaver/parallel-parallel-sum-equiv.wvr.c [2024-06-20 18:12:55,724 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/33f486a68/4e17e8f463eb4fd2b7a0416f5a36ee69/FLAG76ee1312e [2024-06-20 18:12:55,738 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/33f486a68/4e17e8f463eb4fd2b7a0416f5a36ee69 [2024-06-20 18:12:55,738 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-06-20 18:12:55,739 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2024-06-20 18:12:55,740 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-06-20 18:12:55,741 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-06-20 18:12:55,744 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-06-20 18:12:55,745 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 20.06 06:12:54" (1/2) ... [2024-06-20 18:12:55,746 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@58488038 and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 20.06 06:12:55, skipping insertion in model container [2024-06-20 18:12:55,746 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 20.06 06:12:54" (1/2) ... [2024-06-20 18:12:55,748 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@4a4f766f and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 20.06 06:12:55, skipping insertion in model container [2024-06-20 18:12:55,749 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.06 06:12:55" (2/2) ... [2024-06-20 18:12:55,749 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@58488038 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.06 06:12:55, skipping insertion in model container [2024-06-20 18:12:55,749 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.06 06:12:55" (2/2) ... [2024-06-20 18:12:55,749 INFO L83 nessWitnessExtractor]: Extracting all invariants from correctness witness [2024-06-20 18:12:55,764 INFO L95 edCorrectnessWitness]: Found the following entries in the witness: [2024-06-20 18:12:55,765 INFO L97 edCorrectnessWitness]: Location invariant before [L139-L139] ! multithreaded || ((4294967296LL + (long long )i_7) + (long long )n_1 >= 0LL && (4294967295LL + (long long )i_7) - (long long )n_1 >= 0LL) [2024-06-20 18:12:55,765 INFO L97 edCorrectnessWitness]: Location invariant before [L92-L92] ! multithreaded || ((4294967296LL + (long long )i_7) + (long long )n_1 >= 0LL && (4294967295LL + (long long )i_7) - (long long )n_1 >= 0LL) [2024-06-20 18:12:55,766 INFO L97 edCorrectnessWitness]: Location invariant before [L93-L93] ! multithreaded || ((4294967296LL + (long long )i_7) + (long long )n_1 >= 0LL && (4294967295LL + (long long )i_7) - (long long )n_1 >= 0LL) [2024-06-20 18:12:55,766 INFO L97 edCorrectnessWitness]: Location invariant before [L140-L140] ! multithreaded || ((4294967296LL + (long long )i_7) + (long long )n_1 >= 0LL && (4294967295LL + (long long )i_7) - (long long )n_1 >= 0LL) [2024-06-20 18:12:55,766 INFO L103 edCorrectnessWitness]: ghost_variable multithreaded = 0 [2024-06-20 18:12:55,766 INFO L106 edCorrectnessWitness]: ghost_update [L138-L138] multithreaded = 1; [2024-06-20 18:12:55,786 INFO L177 MainTranslator]: Built tables and reachable declarations [2024-06-20 18:12:55,971 INFO L207 PostProcessor]: Analyzing one entry point: main [2024-06-20 18:12:55,978 INFO L202 MainTranslator]: Completed pre-run Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local [2024-06-20 18:12:56,056 INFO L207 PostProcessor]: Analyzing one entry point: main [2024-06-20 18:12:56,073 INFO L206 MainTranslator]: Completed translation [2024-06-20 18:12:56,073 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.06 06:12:56 WrapperNode [2024-06-20 18:12:56,074 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-06-20 18:12:56,075 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-06-20 18:12:56,075 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-06-20 18:12:56,075 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-06-20 18:12:56,080 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.06 06:12:56" (1/1) ... [2024-06-20 18:12:56,098 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.06 06:12:56" (1/1) ... [2024-06-20 18:12:56,133 INFO L138 Inliner]: procedures = 26, calls = 54, calls flagged for inlining = 19, calls inlined = 23, statements flattened = 258 [2024-06-20 18:12:56,134 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-06-20 18:12:56,135 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-06-20 18:12:56,135 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-06-20 18:12:56,135 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-06-20 18:12:56,170 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.06 06:12:56" (1/1) ... [2024-06-20 18:12:56,170 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.06 06:12:56" (1/1) ... [2024-06-20 18:12:56,203 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.06 06:12:56" (1/1) ... [2024-06-20 18:12:56,232 INFO L175 MemorySlicer]: Split 6 memory accesses to 2 slices as follows [2, 4]. 67 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2, 0]. The 1 writes are split as follows [0, 1]. [2024-06-20 18:12:56,236 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.06 06:12:56" (1/1) ... [2024-06-20 18:12:56,237 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.06 06:12:56" (1/1) ... [2024-06-20 18:12:56,249 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.06 06:12:56" (1/1) ... [2024-06-20 18:12:56,254 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.06 06:12:56" (1/1) ... [2024-06-20 18:12:56,258 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.06 06:12:56" (1/1) ... [2024-06-20 18:12:56,260 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.06 06:12:56" (1/1) ... [2024-06-20 18:12:56,262 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-06-20 18:12:56,264 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-06-20 18:12:56,265 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-06-20 18:12:56,265 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-06-20 18:12:56,266 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.06 06:12:56" (1/1) ... [2024-06-20 18:12:56,270 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-06-20 18:12:56,275 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-06-20 18:12:56,296 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) [2024-06-20 18:12:56,316 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 [2024-06-20 18:12:56,333 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-06-20 18:12:56,333 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-06-20 18:12:56,333 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2024-06-20 18:12:56,333 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2024-06-20 18:12:56,334 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2024-06-20 18:12:56,334 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2024-06-20 18:12:56,334 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2024-06-20 18:12:56,334 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2024-06-20 18:12:56,334 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2024-06-20 18:12:56,334 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2024-06-20 18:12:56,335 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2024-06-20 18:12:56,335 INFO L130 BoogieDeclarations]: Found specification of procedure thread4 [2024-06-20 18:12:56,335 INFO L138 BoogieDeclarations]: Found implementation of procedure thread4 [2024-06-20 18:12:56,335 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-06-20 18:12:56,336 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-06-20 18:12:56,337 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2024-06-20 18:12:56,337 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2024-06-20 18:12:56,337 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2024-06-20 18:12:56,337 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-06-20 18:12:56,337 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-06-20 18:12:56,338 WARN L214 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2024-06-20 18:12:56,459 INFO L244 CfgBuilder]: Building ICFG [2024-06-20 18:12:56,461 INFO L270 CfgBuilder]: Building CFG for each procedure with an implementation [2024-06-20 18:12:56,776 INFO L289 CfgBuilder]: Ommited future-live optimization because the input is a concurrent program. [2024-06-20 18:12:56,776 INFO L293 CfgBuilder]: Performing block encoding [2024-06-20 18:12:57,000 INFO L315 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-06-20 18:12:57,001 INFO L320 CfgBuilder]: Removed 4 assume(true) statements. [2024-06-20 18:12:57,001 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.06 06:12:57 BoogieIcfgContainer [2024-06-20 18:12:57,001 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-06-20 18:12:57,004 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-06-20 18:12:57,004 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-06-20 18:12:57,007 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-06-20 18:12:57,007 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 20.06 06:12:54" (1/4) ... [2024-06-20 18:12:57,008 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7fd58a6a and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CORRECTNESS_WITNESS 20.06 06:12:57, skipping insertion in model container [2024-06-20 18:12:57,008 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.06 06:12:55" (2/4) ... [2024-06-20 18:12:57,009 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7fd58a6a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.06 06:12:57, skipping insertion in model container [2024-06-20 18:12:57,009 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.06 06:12:56" (3/4) ... [2024-06-20 18:12:57,010 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7fd58a6a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.06 06:12:57, skipping insertion in model container [2024-06-20 18:12:57,010 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.06 06:12:57" (4/4) ... [2024-06-20 18:12:57,011 INFO L112 eAbstractionObserver]: Analyzing ICFG parallel-parallel-sum-equiv.wvr.c [2024-06-20 18:12:57,023 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-06-20 18:12:57,024 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 4 error locations. [2024-06-20 18:12:57,024 INFO L522 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-06-20 18:12:57,095 INFO L144 ThreadInstanceAdder]: Constructed 10 joinOtherThreadTransitions. [2024-06-20 18:12:57,132 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 70 places, 66 transitions, 172 flow [2024-06-20 18:12:57,162 INFO L124 PetriNetUnfolderBase]: 9/59 cut-off events. [2024-06-20 18:12:57,162 INFO L125 PetriNetUnfolderBase]: For 4/4 co-relation queries the response was YES. [2024-06-20 18:12:57,168 INFO L83 FinitePrefix]: Finished finitePrefix Result has 78 conditions, 59 events. 9/59 cut-off events. For 4/4 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 125 event pairs, 0 based on Foata normal form. 0/46 useless extension candidates. Maximal degree in co-relation 61. Up to 3 conditions per place. [2024-06-20 18:12:57,169 INFO L82 GeneralOperation]: Start removeDead. Operand has 70 places, 66 transitions, 172 flow [2024-06-20 18:12:57,172 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 61 places, 57 transitions, 141 flow [2024-06-20 18:12:57,183 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-06-20 18:12:57,188 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;@500c15cd, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-06-20 18:12:57,188 INFO L358 AbstractCegarLoop]: Starting to check reachability of 12 error locations. [2024-06-20 18:12:57,191 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-06-20 18:12:57,193 INFO L124 PetriNetUnfolderBase]: 1/8 cut-off events. [2024-06-20 18:12:57,193 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-06-20 18:12:57,193 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-20 18:12:57,194 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1] [2024-06-20 18:12:57,195 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [thread1Err0ASSERT_VIOLATIONWITNESS_INVARIANT, thread1Err1ASSERT_VIOLATIONWITNESS_INVARIANT, thread1Err1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 9 more)] === [2024-06-20 18:12:57,199 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-20 18:12:57,199 INFO L85 PathProgramCache]: Analyzing trace with hash 2051860302, now seen corresponding path program 1 times [2024-06-20 18:12:57,205 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-20 18:12:57,206 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [569316460] [2024-06-20 18:12:57,206 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-20 18:12:57,206 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-20 18:12:57,291 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-20 18:12:57,438 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-20 18:12:57,438 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-20 18:12:57,438 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [569316460] [2024-06-20 18:12:57,439 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [569316460] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-20 18:12:57,439 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-20 18:12:57,439 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-06-20 18:12:57,440 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [872586996] [2024-06-20 18:12:57,441 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-20 18:12:57,447 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-06-20 18:12:57,451 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-20 18:12:57,467 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-06-20 18:12:57,468 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-06-20 18:12:57,476 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 68 [2024-06-20 18:12:57,478 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 61 places, 57 transitions, 141 flow. Second operand has 3 states, 3 states have (on average 11.666666666666666) internal successors, (35), 3 states have internal predecessors, (35), 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) [2024-06-20 18:12:57,478 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-20 18:12:57,478 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 68 [2024-06-20 18:12:57,479 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-20 18:12:59,099 INFO L124 PetriNetUnfolderBase]: 18204/24093 cut-off events. [2024-06-20 18:12:59,100 INFO L125 PetriNetUnfolderBase]: For 1076/1076 co-relation queries the response was YES. [2024-06-20 18:12:59,136 INFO L83 FinitePrefix]: Finished finitePrefix Result has 49399 conditions, 24093 events. 18204/24093 cut-off events. For 1076/1076 co-relation queries the response was YES. Maximal size of possible extension queue 794. Compared 123607 event pairs, 4404 based on Foata normal form. 484/22145 useless extension candidates. Maximal degree in co-relation 49342. Up to 21420 conditions per place. [2024-06-20 18:12:59,241 INFO L140 encePairwiseOnDemand]: 59/68 looper letters, 72 selfloop transitions, 2 changer transitions 2/82 dead transitions. [2024-06-20 18:12:59,241 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 62 places, 82 transitions, 364 flow [2024-06-20 18:12:59,242 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-06-20 18:12:59,244 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-06-20 18:12:59,249 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 115 transitions. [2024-06-20 18:12:59,250 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5637254901960784 [2024-06-20 18:12:59,251 INFO L175 Difference]: Start difference. First operand has 61 places, 57 transitions, 141 flow. Second operand 3 states and 115 transitions. [2024-06-20 18:12:59,252 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 62 places, 82 transitions, 364 flow [2024-06-20 18:12:59,258 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 55 places, 82 transitions, 333 flow, removed 0 selfloop flow, removed 7 redundant places. [2024-06-20 18:12:59,260 INFO L231 Difference]: Finished difference. Result has 56 places, 52 transitions, 125 flow [2024-06-20 18:12:59,261 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=68, PETRI_DIFFERENCE_MINUEND_FLOW=116, PETRI_DIFFERENCE_MINUEND_PLACES=53, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=53, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=51, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=125, PETRI_PLACES=56, PETRI_TRANSITIONS=52} [2024-06-20 18:12:59,264 INFO L281 CegarLoopForPetriNet]: 61 programPoint places, -5 predicate places. [2024-06-20 18:12:59,264 INFO L495 AbstractCegarLoop]: Abstraction has has 56 places, 52 transitions, 125 flow [2024-06-20 18:12:59,264 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 11.666666666666666) internal successors, (35), 3 states have internal predecessors, (35), 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) [2024-06-20 18:12:59,264 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-20 18:12:59,264 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-20 18:12:59,265 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-06-20 18:12:59,265 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [thread1Err0ASSERT_VIOLATIONWITNESS_INVARIANT, thread1Err1ASSERT_VIOLATIONWITNESS_INVARIANT, thread1Err1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 9 more)] === [2024-06-20 18:12:59,265 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-20 18:12:59,265 INFO L85 PathProgramCache]: Analyzing trace with hash -81952264, now seen corresponding path program 1 times [2024-06-20 18:12:59,266 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-20 18:12:59,266 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1494191842] [2024-06-20 18:12:59,266 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-20 18:12:59,266 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-20 18:12:59,279 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-20 18:12:59,369 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-20 18:12:59,369 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-20 18:12:59,369 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1494191842] [2024-06-20 18:12:59,370 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1494191842] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-20 18:12:59,370 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-20 18:12:59,370 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-06-20 18:12:59,370 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [792948532] [2024-06-20 18:12:59,370 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-20 18:12:59,371 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-06-20 18:12:59,372 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-20 18:12:59,372 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-06-20 18:12:59,372 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-06-20 18:12:59,389 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 68 [2024-06-20 18:12:59,390 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 56 places, 52 transitions, 125 flow. Second operand has 4 states, 4 states have (on average 12.25) internal successors, (49), 4 states have internal predecessors, (49), 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) [2024-06-20 18:12:59,390 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-20 18:12:59,391 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 68 [2024-06-20 18:12:59,391 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-20 18:13:01,169 INFO L124 PetriNetUnfolderBase]: 23959/31854 cut-off events. [2024-06-20 18:13:01,170 INFO L125 PetriNetUnfolderBase]: For 4747/4747 co-relation queries the response was YES. [2024-06-20 18:13:01,215 INFO L83 FinitePrefix]: Finished finitePrefix Result has 68120 conditions, 31854 events. 23959/31854 cut-off events. For 4747/4747 co-relation queries the response was YES. Maximal size of possible extension queue 843. Compared 164298 event pairs, 15958 based on Foata normal form. 1860/30571 useless extension candidates. Maximal degree in co-relation 63813. Up to 23991 conditions per place. [2024-06-20 18:13:01,312 INFO L140 encePairwiseOnDemand]: 62/68 looper letters, 74 selfloop transitions, 3 changer transitions 3/86 dead transitions. [2024-06-20 18:13:01,313 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 58 places, 86 transitions, 359 flow [2024-06-20 18:13:01,314 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-06-20 18:13:01,314 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-06-20 18:13:01,315 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 123 transitions. [2024-06-20 18:13:01,317 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4522058823529412 [2024-06-20 18:13:01,318 INFO L175 Difference]: Start difference. First operand has 56 places, 52 transitions, 125 flow. Second operand 4 states and 123 transitions. [2024-06-20 18:13:01,320 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 58 places, 86 transitions, 359 flow [2024-06-20 18:13:01,322 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 56 places, 86 transitions, 355 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-06-20 18:13:01,324 INFO L231 Difference]: Finished difference. Result has 57 places, 53 transitions, 139 flow [2024-06-20 18:13:01,324 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=68, PETRI_DIFFERENCE_MINUEND_FLOW=121, PETRI_DIFFERENCE_MINUEND_PLACES=53, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=52, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=49, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=139, PETRI_PLACES=57, PETRI_TRANSITIONS=53} [2024-06-20 18:13:01,325 INFO L281 CegarLoopForPetriNet]: 61 programPoint places, -4 predicate places. [2024-06-20 18:13:01,329 INFO L495 AbstractCegarLoop]: Abstraction has has 57 places, 53 transitions, 139 flow [2024-06-20 18:13:01,329 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 12.25) internal successors, (49), 4 states have internal predecessors, (49), 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) [2024-06-20 18:13:01,329 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-20 18:13:01,329 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-20 18:13:01,330 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-06-20 18:13:01,330 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [thread1Err0ASSERT_VIOLATIONWITNESS_INVARIANT, thread1Err1ASSERT_VIOLATIONWITNESS_INVARIANT, thread1Err1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 9 more)] === [2024-06-20 18:13:01,330 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-20 18:13:01,331 INFO L85 PathProgramCache]: Analyzing trace with hash 624904406, now seen corresponding path program 1 times [2024-06-20 18:13:01,331 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-20 18:13:01,331 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1499766486] [2024-06-20 18:13:01,331 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-20 18:13:01,332 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-20 18:13:01,360 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-20 18:13:01,549 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-20 18:13:01,549 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-20 18:13:01,549 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1499766486] [2024-06-20 18:13:01,549 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1499766486] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-20 18:13:01,549 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-20 18:13:01,549 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-06-20 18:13:01,550 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1368464785] [2024-06-20 18:13:01,550 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-20 18:13:01,550 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-06-20 18:13:01,550 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-20 18:13:01,550 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-06-20 18:13:01,550 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-06-20 18:13:01,575 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 68 [2024-06-20 18:13:01,575 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 57 places, 53 transitions, 139 flow. Second operand has 5 states, 5 states have (on average 16.2) internal successors, (81), 5 states have internal predecessors, (81), 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) [2024-06-20 18:13:01,575 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-20 18:13:01,575 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 68 [2024-06-20 18:13:01,575 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-20 18:13:03,472 INFO L124 PetriNetUnfolderBase]: 27486/37846 cut-off events. [2024-06-20 18:13:03,472 INFO L125 PetriNetUnfolderBase]: For 3346/3346 co-relation queries the response was YES. [2024-06-20 18:13:03,535 INFO L83 FinitePrefix]: Finished finitePrefix Result has 79816 conditions, 37846 events. 27486/37846 cut-off events. For 3346/3346 co-relation queries the response was YES. Maximal size of possible extension queue 903. Compared 215307 event pairs, 18393 based on Foata normal form. 332/33733 useless extension candidates. Maximal degree in co-relation 53698. Up to 26964 conditions per place. [2024-06-20 18:13:03,622 INFO L140 encePairwiseOnDemand]: 63/68 looper letters, 43 selfloop transitions, 2 changer transitions 67/121 dead transitions. [2024-06-20 18:13:03,623 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 61 places, 121 transitions, 518 flow [2024-06-20 18:13:03,623 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-06-20 18:13:03,623 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-06-20 18:13:03,624 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 182 transitions. [2024-06-20 18:13:03,624 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5352941176470588 [2024-06-20 18:13:03,625 INFO L175 Difference]: Start difference. First operand has 57 places, 53 transitions, 139 flow. Second operand 5 states and 182 transitions. [2024-06-20 18:13:03,625 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 61 places, 121 transitions, 518 flow [2024-06-20 18:13:03,629 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 59 places, 121 transitions, 513 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-06-20 18:13:03,630 INFO L231 Difference]: Finished difference. Result has 62 places, 54 transitions, 151 flow [2024-06-20 18:13:03,630 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=68, PETRI_DIFFERENCE_MINUEND_FLOW=135, PETRI_DIFFERENCE_MINUEND_PLACES=55, 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=5, PETRI_FLOW=151, PETRI_PLACES=62, PETRI_TRANSITIONS=54} [2024-06-20 18:13:03,630 INFO L281 CegarLoopForPetriNet]: 61 programPoint places, 1 predicate places. [2024-06-20 18:13:03,631 INFO L495 AbstractCegarLoop]: Abstraction has has 62 places, 54 transitions, 151 flow [2024-06-20 18:13:03,631 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 16.2) internal successors, (81), 5 states have internal predecessors, (81), 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) [2024-06-20 18:13:03,631 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-20 18:13:03,631 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-20 18:13:03,631 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-06-20 18:13:03,632 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [thread1Err0ASSERT_VIOLATIONWITNESS_INVARIANT, thread1Err1ASSERT_VIOLATIONWITNESS_INVARIANT, thread1Err1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 9 more)] === [2024-06-20 18:13:03,632 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-20 18:13:03,632 INFO L85 PathProgramCache]: Analyzing trace with hash 1505568658, now seen corresponding path program 1 times [2024-06-20 18:13:03,632 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-20 18:13:03,632 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [721572001] [2024-06-20 18:13:03,633 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-20 18:13:03,633 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-20 18:13:03,659 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-20 18:13:03,769 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-20 18:13:03,770 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-20 18:13:03,772 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [721572001] [2024-06-20 18:13:03,772 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [721572001] provided 0 perfect and 1 imperfect interpolant sequences [2024-06-20 18:13:03,773 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [833953124] [2024-06-20 18:13:03,773 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-20 18:13:03,773 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-06-20 18:13:03,773 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-06-20 18:13:03,774 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) [2024-06-20 18:13:03,776 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-06-20 18:13:03,856 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-20 18:13:03,858 INFO L262 TraceCheckSpWp]: Trace formula consists of 138 conjuncts, 7 conjunts are in the unsatisfiable core [2024-06-20 18:13:03,862 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-06-20 18:13:03,958 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-20 18:13:03,958 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-06-20 18:13:04,014 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-20 18:13:04,015 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [833953124] provided 0 perfect and 2 imperfect interpolant sequences [2024-06-20 18:13:04,015 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-06-20 18:13:04,015 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 11 [2024-06-20 18:13:04,015 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1903223178] [2024-06-20 18:13:04,016 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-06-20 18:13:04,016 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-20 18:13:04,017 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-20 18:13:04,017 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-20 18:13:04,018 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=87, Unknown=0, NotChecked=0, Total=132 [2024-06-20 18:13:04,048 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 68 [2024-06-20 18:13:04,048 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 62 places, 54 transitions, 151 flow. Second operand has 12 states, 12 states have (on average 12.416666666666666) internal successors, (149), 12 states have internal predecessors, (149), 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) [2024-06-20 18:13:04,048 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-20 18:13:04,048 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 68 [2024-06-20 18:13:04,048 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-20 18:13:06,435 INFO L124 PetriNetUnfolderBase]: 33109/44744 cut-off events. [2024-06-20 18:13:06,435 INFO L125 PetriNetUnfolderBase]: For 11608/11608 co-relation queries the response was YES. [2024-06-20 18:13:06,523 INFO L83 FinitePrefix]: Finished finitePrefix Result has 100647 conditions, 44744 events. 33109/44744 cut-off events. For 11608/11608 co-relation queries the response was YES. Maximal size of possible extension queue 1084. Compared 252272 event pairs, 16714 based on Foata normal form. 332/40650 useless extension candidates. Maximal degree in co-relation 100632. Up to 23045 conditions per place. [2024-06-20 18:13:06,630 INFO L140 encePairwiseOnDemand]: 59/68 looper letters, 105 selfloop transitions, 7 changer transitions 67/185 dead transitions. [2024-06-20 18:13:06,630 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 67 places, 185 transitions, 831 flow [2024-06-20 18:13:06,631 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-20 18:13:06,631 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-20 18:13:06,633 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 259 transitions. [2024-06-20 18:13:06,633 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.47610294117647056 [2024-06-20 18:13:06,633 INFO L175 Difference]: Start difference. First operand has 62 places, 54 transitions, 151 flow. Second operand 8 states and 259 transitions. [2024-06-20 18:13:06,634 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 67 places, 185 transitions, 831 flow [2024-06-20 18:13:06,657 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 64 places, 185 transitions, 821 flow, removed 4 selfloop flow, removed 3 redundant places. [2024-06-20 18:13:06,660 INFO L231 Difference]: Finished difference. Result has 68 places, 58 transitions, 199 flow [2024-06-20 18:13:06,660 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=68, PETRI_DIFFERENCE_MINUEND_FLOW=143, PETRI_DIFFERENCE_MINUEND_PLACES=57, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=54, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=47, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=199, PETRI_PLACES=68, PETRI_TRANSITIONS=58} [2024-06-20 18:13:06,661 INFO L281 CegarLoopForPetriNet]: 61 programPoint places, 7 predicate places. [2024-06-20 18:13:06,661 INFO L495 AbstractCegarLoop]: Abstraction has has 68 places, 58 transitions, 199 flow [2024-06-20 18:13:06,662 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 12.416666666666666) internal successors, (149), 12 states have internal predecessors, (149), 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) [2024-06-20 18:13:06,662 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-20 18:13:06,662 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-20 18:13:06,679 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2024-06-20 18:13:06,864 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 [2024-06-20 18:13:06,864 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [thread1Err0ASSERT_VIOLATIONWITNESS_INVARIANT, thread1Err1ASSERT_VIOLATIONWITNESS_INVARIANT, thread1Err1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 9 more)] === [2024-06-20 18:13:06,865 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-20 18:13:06,865 INFO L85 PathProgramCache]: Analyzing trace with hash 1320751838, now seen corresponding path program 2 times [2024-06-20 18:13:06,865 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-20 18:13:06,865 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1804548471] [2024-06-20 18:13:06,865 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-20 18:13:06,865 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-20 18:13:06,876 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-20 18:13:07,160 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-20 18:13:07,160 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-20 18:13:07,160 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1804548471] [2024-06-20 18:13:07,160 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1804548471] provided 0 perfect and 1 imperfect interpolant sequences [2024-06-20 18:13:07,161 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [362898601] [2024-06-20 18:13:07,164 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-06-20 18:13:07,164 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-06-20 18:13:07,164 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-06-20 18:13:07,165 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) [2024-06-20 18:13:07,184 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-06-20 18:13:07,235 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2024-06-20 18:13:07,235 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-06-20 18:13:07,236 INFO L262 TraceCheckSpWp]: Trace formula consists of 129 conjuncts, 5 conjunts are in the unsatisfiable core [2024-06-20 18:13:07,238 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-06-20 18:13:07,293 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-06-20 18:13:07,293 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-06-20 18:13:07,293 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [362898601] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-20 18:13:07,294 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-06-20 18:13:07,294 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [6] total 9 [2024-06-20 18:13:07,294 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1413816325] [2024-06-20 18:13:07,294 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-20 18:13:07,294 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-06-20 18:13:07,295 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-20 18:13:07,295 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-06-20 18:13:07,295 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2024-06-20 18:13:07,303 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 68 [2024-06-20 18:13:07,304 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 68 places, 58 transitions, 199 flow. Second operand has 5 states, 5 states have (on average 12.6) internal successors, (63), 5 states have internal predecessors, (63), 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) [2024-06-20 18:13:07,304 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-20 18:13:07,304 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 68 [2024-06-20 18:13:07,304 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-20 18:13:08,443 INFO L124 PetriNetUnfolderBase]: 14649/19850 cut-off events. [2024-06-20 18:13:08,443 INFO L125 PetriNetUnfolderBase]: For 13421/13421 co-relation queries the response was YES. [2024-06-20 18:13:08,474 INFO L83 FinitePrefix]: Finished finitePrefix Result has 42902 conditions, 19850 events. 14649/19850 cut-off events. For 13421/13421 co-relation queries the response was YES. Maximal size of possible extension queue 572. Compared 103261 event pairs, 1589 based on Foata normal form. 2170/19939 useless extension candidates. Maximal degree in co-relation 42872. Up to 9404 conditions per place. [2024-06-20 18:13:08,485 INFO L140 encePairwiseOnDemand]: 62/68 looper letters, 0 selfloop transitions, 0 changer transitions 113/113 dead transitions. [2024-06-20 18:13:08,485 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 66 places, 113 transitions, 499 flow [2024-06-20 18:13:08,486 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-06-20 18:13:08,486 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-06-20 18:13:08,486 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 158 transitions. [2024-06-20 18:13:08,486 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4647058823529412 [2024-06-20 18:13:08,487 INFO L175 Difference]: Start difference. First operand has 68 places, 58 transitions, 199 flow. Second operand 5 states and 158 transitions. [2024-06-20 18:13:08,487 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 66 places, 113 transitions, 499 flow [2024-06-20 18:13:08,672 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 60 places, 113 transitions, 481 flow, removed 4 selfloop flow, removed 6 redundant places. [2024-06-20 18:13:08,673 INFO L231 Difference]: Finished difference. Result has 60 places, 0 transitions, 0 flow [2024-06-20 18:13:08,673 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=68, PETRI_DIFFERENCE_MINUEND_FLOW=132, PETRI_DIFFERENCE_MINUEND_PLACES=56, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=52, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=52, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=0, PETRI_PLACES=60, PETRI_TRANSITIONS=0} [2024-06-20 18:13:08,674 INFO L281 CegarLoopForPetriNet]: 61 programPoint places, -1 predicate places. [2024-06-20 18:13:08,674 INFO L495 AbstractCegarLoop]: Abstraction has has 60 places, 0 transitions, 0 flow [2024-06-20 18:13:08,674 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 12.6) internal successors, (63), 5 states have internal predecessors, (63), 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) [2024-06-20 18:13:08,676 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err0ASSERT_VIOLATIONWITNESS_INVARIANT (11 of 12 remaining) [2024-06-20 18:13:08,676 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err1ASSERT_VIOLATIONWITNESS_INVARIANT (10 of 12 remaining) [2024-06-20 18:13:08,676 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (9 of 12 remaining) [2024-06-20 18:13:08,677 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err2INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (8 of 12 remaining) [2024-06-20 18:13:08,677 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT (7 of 12 remaining) [2024-06-20 18:13:08,677 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (6 of 12 remaining) [2024-06-20 18:13:08,677 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr3INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (5 of 12 remaining) [2024-06-20 18:13:08,677 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr4INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (4 of 12 remaining) [2024-06-20 18:13:08,677 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err0ASSERT_VIOLATIONWITNESS_INVARIANT (3 of 12 remaining) [2024-06-20 18:13:08,677 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err1ASSERT_VIOLATIONWITNESS_INVARIANT (2 of 12 remaining) [2024-06-20 18:13:08,678 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Thread1of1ForFork3Err0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 12 remaining) [2024-06-20 18:13:08,678 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Thread1of1ForFork3Err5INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 12 remaining) [2024-06-20 18:13:08,691 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2024-06-20 18:13:08,882 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 [2024-06-20 18:13:08,883 INFO L445 BasicCegarLoop]: Path program histogram: [2, 1, 1, 1] [2024-06-20 18:13:08,887 INFO L229 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2024-06-20 18:13:08,887 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2024-06-20 18:13:08,889 INFO L507 ceAbstractionStarter]: Automizer considered 4 witness invariants [2024-06-20 18:13:08,889 INFO L508 ceAbstractionStarter]: WitnessConsidered=4 [2024-06-20 18:13:08,890 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 20.06 06:13:08 BasicIcfg [2024-06-20 18:13:08,890 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2024-06-20 18:13:08,891 INFO L158 Benchmark]: Toolchain (without parser) took 13151.38ms. Allocated memory was 146.8MB in the beginning and 8.7GB in the end (delta: 8.6GB). Free memory was 93.0MB in the beginning and 7.6GB in the end (delta: -7.5GB). Peak memory consumption was 1.2GB. Max. memory is 16.1GB. [2024-06-20 18:13:08,891 INFO L158 Benchmark]: Witness Parser took 0.14ms. Allocated memory is still 96.5MB. Free memory was 60.0MB in the beginning and 59.9MB in the end (delta: 44.1kB). There was no memory consumed. Max. memory is 16.1GB. [2024-06-20 18:13:08,891 INFO L158 Benchmark]: CDTParser took 0.12ms. Allocated memory is still 96.5MB. Free memory is still 57.1MB. There was no memory consumed. Max. memory is 16.1GB. [2024-06-20 18:13:08,891 INFO L158 Benchmark]: CACSL2BoogieTranslator took 333.74ms. Allocated memory is still 146.8MB. Free memory was 92.9MB in the beginning and 77.0MB in the end (delta: 15.9MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. [2024-06-20 18:13:08,892 INFO L158 Benchmark]: Boogie Procedure Inliner took 59.04ms. Allocated memory is still 146.8MB. Free memory was 77.0MB in the beginning and 74.2MB in the end (delta: 2.8MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2024-06-20 18:13:08,892 INFO L158 Benchmark]: Boogie Preprocessor took 129.40ms. Allocated memory is still 146.8MB. Free memory was 74.2MB in the beginning and 116.0MB in the end (delta: -41.9MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2024-06-20 18:13:08,892 INFO L158 Benchmark]: RCFGBuilder took 737.10ms. Allocated memory is still 146.8MB. Free memory was 116.0MB in the beginning and 106.1MB in the end (delta: 10.0MB). Peak memory consumption was 75.5MB. Max. memory is 16.1GB. [2024-06-20 18:13:08,892 INFO L158 Benchmark]: TraceAbstraction took 11885.90ms. Allocated memory was 146.8MB in the beginning and 8.7GB in the end (delta: 8.6GB). Free memory was 106.1MB in the beginning and 7.6GB in the end (delta: -7.5GB). Peak memory consumption was 1.3GB. Max. memory is 16.1GB. [2024-06-20 18:13:08,894 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 0.14ms. Allocated memory is still 96.5MB. Free memory was 60.0MB in the beginning and 59.9MB in the end (delta: 44.1kB). There was no memory consumed. Max. memory is 16.1GB. * CDTParser took 0.12ms. Allocated memory is still 96.5MB. Free memory is still 57.1MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 333.74ms. Allocated memory is still 146.8MB. Free memory was 92.9MB in the beginning and 77.0MB in the end (delta: 15.9MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 59.04ms. Allocated memory is still 146.8MB. Free memory was 77.0MB in the beginning and 74.2MB in the end (delta: 2.8MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 129.40ms. Allocated memory is still 146.8MB. Free memory was 74.2MB in the beginning and 116.0MB in the end (delta: -41.9MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * RCFGBuilder took 737.10ms. Allocated memory is still 146.8MB. Free memory was 116.0MB in the beginning and 106.1MB in the end (delta: 10.0MB). Peak memory consumption was 75.5MB. Max. memory is 16.1GB. * TraceAbstraction took 11885.90ms. Allocated memory was 146.8MB in the beginning and 8.7GB in the end (delta: 8.6GB). Free memory was 106.1MB in the beginning and 7.6GB in the end (delta: -7.5GB). Peak memory consumption was 1.3GB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 92]: invariant of correctness witness holds For all program executions holds that invariant of correctness witness holds at this location - PositiveResult [Line: 93]: invariant of correctness witness holds For all program executions holds that invariant of correctness witness holds at this location - 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 - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 9 procedures, 101 locations, 12 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: 11.8s, OverallIterations: 5, TraceHistogramMax: 2, PathProgramHistogramMax: 2, EmptinessCheckTime: 0.0s, AutomataDifference: 9.9s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 540 SdHoareTripleChecker+Valid, 0.8s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 506 mSDsluCounter, 9 SdHoareTripleChecker+Invalid, 0.6s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 0 mSDsCounter, 17 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 1270 IncrementalHoareTripleChecker+Invalid, 1287 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 17 mSolverCounterUnsat, 9 mSDtfsCounter, 1270 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 62 GetRequests, 35 SyntacticMatches, 1 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 48 ImplicationChecksByTransitivity, 0.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=199occurred in iteration=4, InterpolantAutomatonStates: 25, 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, 1.0s InterpolantComputationTime, 93 NumberOfCodeBlocks, 91 NumberOfCodeBlocksAsserted, 7 NumberOfCheckSat, 100 ConstructedInterpolants, 0 QuantifiedInterpolants, 559 SizeOfPredicates, 1 NumberOfNonLiveVariables, 267 ConjunctsInSsa, 12 ConjunctsInUnsatCore, 8 InterpolantComputations, 4 PerfectInterpolantSequences, 3/9 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! [2024-06-20 18:13:08,915 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