./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 cde23df1 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-cde23df-m [2024-06-14 14:18:25,619 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-06-14 14:18:25,674 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-06-14 14:18:25,678 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-06-14 14:18:25,678 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-06-14 14:18:25,708 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-06-14 14:18:25,709 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-06-14 14:18:25,709 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-06-14 14:18:25,710 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-06-14 14:18:25,713 INFO L153 SettingsManager]: * Use memory slicer=true [2024-06-14 14:18:25,713 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-06-14 14:18:25,713 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-06-14 14:18:25,713 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-06-14 14:18:25,714 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-06-14 14:18:25,715 INFO L153 SettingsManager]: * Use SBE=true [2024-06-14 14:18:25,715 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-06-14 14:18:25,715 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-06-14 14:18:25,715 INFO L153 SettingsManager]: * sizeof long=4 [2024-06-14 14:18:25,716 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-06-14 14:18:25,716 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-06-14 14:18:25,716 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-06-14 14:18:25,716 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-06-14 14:18:25,717 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-06-14 14:18:25,717 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-06-14 14:18:25,717 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-06-14 14:18:25,717 INFO L153 SettingsManager]: * sizeof long double=12 [2024-06-14 14:18:25,717 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-06-14 14:18:25,717 INFO L153 SettingsManager]: * Use constant arrays=true [2024-06-14 14:18:25,718 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-06-14 14:18:25,718 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-06-14 14:18:25,719 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-06-14 14:18:25,719 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-06-14 14:18:25,719 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-06-14 14:18:25,719 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-06-14 14:18:25,719 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-06-14 14:18:25,720 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-06-14 14:18:25,720 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-06-14 14:18:25,720 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-06-14 14:18:25,720 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-06-14 14:18:25,720 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-06-14 14:18:25,720 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2024-06-14 14:18:25,721 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-06-14 14:18:25,721 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-06-14 14:18:25,721 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessparser: Only consider loop invariants -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Check unreachability of reach_error function -> false [2024-06-14 14:18:25,953 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-06-14 14:18:25,978 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-06-14 14:18:25,980 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-06-14 14:18:25,981 INFO L270 PluginConnector]: Initializing Witness Parser... [2024-06-14 14:18:25,981 INFO L274 PluginConnector]: Witness Parser initialized [2024-06-14 14:18:25,982 INFO L431 ainManager$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 [2024-06-14 14:18:26,059 INFO L270 PluginConnector]: Initializing CDTParser... [2024-06-14 14:18:26,060 INFO L274 PluginConnector]: CDTParser initialized [2024-06-14 14:18:26,060 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/weaver/parallel-parallel-sum-equiv.wvr.c [2024-06-14 14:18:27,022 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-06-14 14:18:27,194 INFO L384 CDTParser]: Found 1 translation units. [2024-06-14 14:18:27,195 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/weaver/parallel-parallel-sum-equiv.wvr.c [2024-06-14 14:18:27,200 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/3846710ba/04105921f20145018b9e1fd1ca82a6ad/FLAGe38a298d3 [2024-06-14 14:18:27,209 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/3846710ba/04105921f20145018b9e1fd1ca82a6ad [2024-06-14 14:18:27,210 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-06-14 14:18:27,211 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2024-06-14 14:18:27,212 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-06-14 14:18:27,212 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-06-14 14:18:27,215 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-06-14 14:18:27,216 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 14.06 02:18:26" (1/2) ... [2024-06-14 14:18:27,216 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5cb73f4c and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 14.06 02:18:27, skipping insertion in model container [2024-06-14 14:18:27,216 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 14.06 02:18:26" (1/2) ... [2024-06-14 14:18:27,217 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@6b7485b0 and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 14.06 02:18:27, skipping insertion in model container [2024-06-14 14:18:27,217 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.06 02:18:27" (2/2) ... [2024-06-14 14:18:27,218 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5cb73f4c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.06 02:18:27, skipping insertion in model container [2024-06-14 14:18:27,218 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.06 02:18:27" (2/2) ... [2024-06-14 14:18:27,218 INFO L83 nessWitnessExtractor]: Extracting all invariants from correctness witness [2024-06-14 14:18:27,231 INFO L95 edCorrectnessWitness]: Found the following entries in the witness: [2024-06-14 14:18:27,232 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) [2024-06-14 14:18:27,232 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) [2024-06-14 14:18:27,232 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) [2024-06-14 14:18:27,233 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) [2024-06-14 14:18:27,233 INFO L103 edCorrectnessWitness]: ghost_variable multithreaded = 0 [2024-06-14 14:18:27,233 INFO L106 edCorrectnessWitness]: ghost_update [L138-L138] multithreaded = 1; [2024-06-14 14:18:27,247 INFO L177 MainTranslator]: Built tables and reachable declarations [2024-06-14 14:18:27,396 INFO L207 PostProcessor]: Analyzing one entry point: main [2024-06-14 14:18:27,405 INFO L202 MainTranslator]: Completed pre-run Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local [2024-06-14 14:18:27,460 INFO L207 PostProcessor]: Analyzing one entry point: main [2024-06-14 14:18:27,475 INFO L206 MainTranslator]: Completed translation [2024-06-14 14:18:27,476 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.06 02:18:27 WrapperNode [2024-06-14 14:18:27,476 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-06-14 14:18:27,476 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-06-14 14:18:27,486 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-06-14 14:18:27,486 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-06-14 14:18:27,491 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.06 02:18:27" (1/1) ... [2024-06-14 14:18:27,497 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.06 02:18:27" (1/1) ... [2024-06-14 14:18:27,531 INFO L138 Inliner]: procedures = 26, calls = 54, calls flagged for inlining = 19, calls inlined = 23, statements flattened = 258 [2024-06-14 14:18:27,532 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-06-14 14:18:27,533 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-06-14 14:18:27,534 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-06-14 14:18:27,534 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-06-14 14:18:27,542 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.06 02:18:27" (1/1) ... [2024-06-14 14:18:27,543 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.06 02:18:27" (1/1) ... [2024-06-14 14:18:27,557 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.06 02:18:27" (1/1) ... [2024-06-14 14:18:27,588 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]. [2024-06-14 14:18:27,588 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.06 02:18:27" (1/1) ... [2024-06-14 14:18:27,589 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.06 02:18:27" (1/1) ... [2024-06-14 14:18:27,594 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.06 02:18:27" (1/1) ... [2024-06-14 14:18:27,604 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.06 02:18:27" (1/1) ... [2024-06-14 14:18:27,605 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.06 02:18:27" (1/1) ... [2024-06-14 14:18:27,606 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.06 02:18:27" (1/1) ... [2024-06-14 14:18:27,608 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-06-14 14:18:27,614 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-06-14 14:18:27,614 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-06-14 14:18:27,615 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-06-14 14:18:27,615 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.06 02:18:27" (1/1) ... [2024-06-14 14:18:27,619 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-06-14 14:18:27,625 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-06-14 14:18:27,637 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) [2024-06-14 14:18:27,672 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 [2024-06-14 14:18:27,703 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-06-14 14:18:27,703 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-06-14 14:18:27,706 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2024-06-14 14:18:27,712 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2024-06-14 14:18:27,712 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2024-06-14 14:18:27,712 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2024-06-14 14:18:27,712 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2024-06-14 14:18:27,712 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2024-06-14 14:18:27,713 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2024-06-14 14:18:27,713 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2024-06-14 14:18:27,713 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2024-06-14 14:18:27,713 INFO L130 BoogieDeclarations]: Found specification of procedure thread4 [2024-06-14 14:18:27,713 INFO L138 BoogieDeclarations]: Found implementation of procedure thread4 [2024-06-14 14:18:27,714 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-06-14 14:18:27,714 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-06-14 14:18:27,715 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2024-06-14 14:18:27,715 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2024-06-14 14:18:27,715 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2024-06-14 14:18:27,715 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-06-14 14:18:27,715 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-06-14 14:18:27,717 WARN L214 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2024-06-14 14:18:27,852 INFO L244 CfgBuilder]: Building ICFG [2024-06-14 14:18:27,853 INFO L270 CfgBuilder]: Building CFG for each procedure with an implementation [2024-06-14 14:18:28,197 INFO L289 CfgBuilder]: Ommited future-live optimization because the input is a concurrent program. [2024-06-14 14:18:28,198 INFO L293 CfgBuilder]: Performing block encoding [2024-06-14 14:18:28,458 INFO L315 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-06-14 14:18:28,458 INFO L320 CfgBuilder]: Removed 4 assume(true) statements. [2024-06-14 14:18:28,458 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.06 02:18:28 BoogieIcfgContainer [2024-06-14 14:18:28,459 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-06-14 14:18:28,462 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-06-14 14:18:28,462 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-06-14 14:18:28,464 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-06-14 14:18:28,464 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 14.06 02:18:26" (1/4) ... [2024-06-14 14:18:28,465 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1c30e1e0 and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CORRECTNESS_WITNESS 14.06 02:18:28, skipping insertion in model container [2024-06-14 14:18:28,465 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 14.06 02:18:27" (2/4) ... [2024-06-14 14:18:28,467 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1c30e1e0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.06 02:18:28, skipping insertion in model container [2024-06-14 14:18:28,468 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.06 02:18:27" (3/4) ... [2024-06-14 14:18:28,468 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1c30e1e0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.06 02:18:28, skipping insertion in model container [2024-06-14 14:18:28,468 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.06 02:18:28" (4/4) ... [2024-06-14 14:18:28,469 INFO L112 eAbstractionObserver]: Analyzing ICFG parallel-parallel-sum-equiv.wvr.c [2024-06-14 14:18:28,485 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-06-14 14:18:28,485 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 4 error locations. [2024-06-14 14:18:28,485 INFO L522 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-06-14 14:18:28,549 INFO L144 ThreadInstanceAdder]: Constructed 10 joinOtherThreadTransitions. [2024-06-14 14:18:28,581 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 71 places, 67 transitions, 174 flow [2024-06-14 14:18:28,614 INFO L124 PetriNetUnfolderBase]: 9/60 cut-off events. [2024-06-14 14:18:28,615 INFO L125 PetriNetUnfolderBase]: For 4/4 co-relation queries the response was YES. [2024-06-14 14:18:28,618 INFO L83 FinitePrefix]: Finished finitePrefix Result has 79 conditions, 60 events. 9/60 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. 0/47 useless extension candidates. Maximal degree in co-relation 61. Up to 3 conditions per place. [2024-06-14 14:18:28,618 INFO L82 GeneralOperation]: Start removeDead. Operand has 71 places, 67 transitions, 174 flow [2024-06-14 14:18:28,621 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 62 places, 58 transitions, 143 flow [2024-06-14 14:18:28,632 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-06-14 14:18:28,637 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;@73720852, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-06-14 14:18:28,637 INFO L358 AbstractCegarLoop]: Starting to check reachability of 12 error locations. [2024-06-14 14:18:28,640 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-06-14 14:18:28,640 INFO L124 PetriNetUnfolderBase]: 1/9 cut-off events. [2024-06-14 14:18:28,641 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-06-14 14:18:28,641 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 14:18:28,641 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2024-06-14 14:18:28,642 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [thread1Err0ASSERT_VIOLATIONWITNESS_INVARIANT, thread1Err1ASSERT_VIOLATIONWITNESS_INVARIANT, thread1Err1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 9 more)] === [2024-06-14 14:18:28,645 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 14:18:28,645 INFO L85 PathProgramCache]: Analyzing trace with hash -1695713402, now seen corresponding path program 1 times [2024-06-14 14:18:28,652 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 14:18:28,652 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [924485123] [2024-06-14 14:18:28,652 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 14:18:28,653 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 14:18:28,752 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 14:18:28,870 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 14:18:28,870 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 14:18:28,870 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [924485123] [2024-06-14 14:18:28,871 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [924485123] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 14:18:28,871 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 14:18:28,871 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-06-14 14:18:28,872 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [796391590] [2024-06-14 14:18:28,873 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 14:18:28,879 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-06-14 14:18:28,883 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 14:18:28,900 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-06-14 14:18:28,901 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-06-14 14:18:28,913 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 69 [2024-06-14 14:18:28,915 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 62 places, 58 transitions, 143 flow. Second operand has 3 states, 3 states have (on average 11.333333333333334) internal successors, (34), 3 states have internal predecessors, (34), 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) [2024-06-14 14:18:28,915 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 14:18:28,915 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 69 [2024-06-14 14:18:28,916 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 14:18:30,472 INFO L124 PetriNetUnfolderBase]: 18204/24094 cut-off events. [2024-06-14 14:18:30,473 INFO L125 PetriNetUnfolderBase]: For 1075/1075 co-relation queries the response was YES. [2024-06-14 14:18:30,513 INFO L83 FinitePrefix]: Finished finitePrefix Result has 49402 conditions, 24094 events. 18204/24094 cut-off events. For 1075/1075 co-relation queries the response was YES. Maximal size of possible extension queue 794. Compared 123582 event pairs, 4404 based on Foata normal form. 484/22142 useless extension candidates. Maximal degree in co-relation 49342. Up to 21420 conditions per place. [2024-06-14 14:18:30,658 INFO L140 encePairwiseOnDemand]: 60/69 looper letters, 74 selfloop transitions, 2 changer transitions 2/83 dead transitions. [2024-06-14 14:18:30,658 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 63 places, 83 transitions, 370 flow [2024-06-14 14:18:30,659 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-06-14 14:18:30,661 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-06-14 14:18:30,666 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 114 transitions. [2024-06-14 14:18:30,667 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5507246376811594 [2024-06-14 14:18:30,669 INFO L175 Difference]: Start difference. First operand has 62 places, 58 transitions, 143 flow. Second operand 3 states and 114 transitions. [2024-06-14 14:18:30,669 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 63 places, 83 transitions, 370 flow [2024-06-14 14:18:30,676 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 56 places, 83 transitions, 339 flow, removed 0 selfloop flow, removed 7 redundant places. [2024-06-14 14:18:30,678 INFO L231 Difference]: Finished difference. Result has 57 places, 53 transitions, 127 flow [2024-06-14 14:18:30,679 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=69, PETRI_DIFFERENCE_MINUEND_FLOW=118, PETRI_DIFFERENCE_MINUEND_PLACES=54, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=54, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=52, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=127, PETRI_PLACES=57, PETRI_TRANSITIONS=53} [2024-06-14 14:18:30,682 INFO L281 CegarLoopForPetriNet]: 62 programPoint places, -5 predicate places. [2024-06-14 14:18:30,683 INFO L495 AbstractCegarLoop]: Abstraction has has 57 places, 53 transitions, 127 flow [2024-06-14 14:18:30,683 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 11.333333333333334) internal successors, (34), 3 states have internal predecessors, (34), 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) [2024-06-14 14:18:30,683 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 14:18:30,683 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 14:18:30,683 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-06-14 14:18:30,684 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [thread1Err0ASSERT_VIOLATIONWITNESS_INVARIANT, thread1Err1ASSERT_VIOLATIONWITNESS_INVARIANT, thread1Err1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 9 more)] === [2024-06-14 14:18:30,684 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 14:18:30,684 INFO L85 PathProgramCache]: Analyzing trace with hash 1472174766, now seen corresponding path program 1 times [2024-06-14 14:18:30,685 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 14:18:30,685 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2108032418] [2024-06-14 14:18:30,685 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 14:18:30,685 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 14:18:30,698 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 14:18:30,769 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 14:18:30,770 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 14:18:30,770 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2108032418] [2024-06-14 14:18:30,770 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2108032418] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 14:18:30,770 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 14:18:30,770 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-06-14 14:18:30,771 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [224400397] [2024-06-14 14:18:30,771 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 14:18:30,772 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-06-14 14:18:30,772 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 14:18:30,772 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-06-14 14:18:30,772 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-06-14 14:18:30,785 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 69 [2024-06-14 14:18:30,786 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 57 places, 53 transitions, 127 flow. Second operand has 4 states, 4 states have (on average 11.75) internal successors, (47), 4 states have internal predecessors, (47), 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) [2024-06-14 14:18:30,786 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 14:18:30,786 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 69 [2024-06-14 14:18:30,786 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 14:18:32,628 INFO L124 PetriNetUnfolderBase]: 23959/31855 cut-off events. [2024-06-14 14:18:32,628 INFO L125 PetriNetUnfolderBase]: For 4747/4747 co-relation queries the response was YES. [2024-06-14 14:18:32,661 INFO L83 FinitePrefix]: Finished finitePrefix Result has 68123 conditions, 31855 events. 23959/31855 cut-off events. For 4747/4747 co-relation queries the response was YES. Maximal size of possible extension queue 843. Compared 164320 event pairs, 15958 based on Foata normal form. 1860/30568 useless extension candidates. Maximal degree in co-relation 63813. Up to 23993 conditions per place. [2024-06-14 14:18:32,763 INFO L140 encePairwiseOnDemand]: 63/69 looper letters, 76 selfloop transitions, 3 changer transitions 3/87 dead transitions. [2024-06-14 14:18:32,764 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 59 places, 87 transitions, 365 flow [2024-06-14 14:18:32,765 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-06-14 14:18:32,765 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-06-14 14:18:32,766 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 121 transitions. [2024-06-14 14:18:32,768 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4384057971014493 [2024-06-14 14:18:32,769 INFO L175 Difference]: Start difference. First operand has 57 places, 53 transitions, 127 flow. Second operand 4 states and 121 transitions. [2024-06-14 14:18:32,771 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 59 places, 87 transitions, 365 flow [2024-06-14 14:18:32,772 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 57 places, 87 transitions, 361 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-06-14 14:18:32,774 INFO L231 Difference]: Finished difference. Result has 58 places, 54 transitions, 141 flow [2024-06-14 14:18:32,774 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=69, PETRI_DIFFERENCE_MINUEND_FLOW=123, PETRI_DIFFERENCE_MINUEND_PLACES=54, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=53, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=50, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=141, PETRI_PLACES=58, PETRI_TRANSITIONS=54} [2024-06-14 14:18:32,776 INFO L281 CegarLoopForPetriNet]: 62 programPoint places, -4 predicate places. [2024-06-14 14:18:32,780 INFO L495 AbstractCegarLoop]: Abstraction has has 58 places, 54 transitions, 141 flow [2024-06-14 14:18:32,781 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 11.75) internal successors, (47), 4 states have internal predecessors, (47), 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) [2024-06-14 14:18:32,781 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 14:18:32,781 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 14:18:32,781 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-06-14 14:18:32,781 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [thread1Err0ASSERT_VIOLATIONWITNESS_INVARIANT, thread1Err1ASSERT_VIOLATIONWITNESS_INVARIANT, thread1Err1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 9 more)] === [2024-06-14 14:18:32,782 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 14:18:32,782 INFO L85 PathProgramCache]: Analyzing trace with hash -1823989522, now seen corresponding path program 1 times [2024-06-14 14:18:32,782 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 14:18:32,783 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [336255134] [2024-06-14 14:18:32,783 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 14:18:32,783 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 14:18:32,810 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 14:18:32,939 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 14:18:32,940 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 14:18:32,940 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [336255134] [2024-06-14 14:18:32,940 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [336255134] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 14:18:32,940 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 14:18:32,940 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-06-14 14:18:32,941 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1865607216] [2024-06-14 14:18:32,941 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 14:18:32,941 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-06-14 14:18:32,942 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 14:18:32,942 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-06-14 14:18:32,943 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-06-14 14:18:32,967 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 69 [2024-06-14 14:18:32,967 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 58 places, 54 transitions, 141 flow. Second operand has 5 states, 5 states have (on average 15.6) internal successors, (78), 5 states have internal predecessors, (78), 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) [2024-06-14 14:18:32,968 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 14:18:32,968 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 69 [2024-06-14 14:18:32,968 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 14:18:34,904 INFO L124 PetriNetUnfolderBase]: 27486/37848 cut-off events. [2024-06-14 14:18:34,904 INFO L125 PetriNetUnfolderBase]: For 3346/3346 co-relation queries the response was YES. [2024-06-14 14:18:35,120 INFO L83 FinitePrefix]: Finished finitePrefix Result has 79822 conditions, 37848 events. 27486/37848 cut-off events. For 3346/3346 co-relation queries the response was YES. Maximal size of possible extension queue 903. Compared 215463 event pairs, 18393 based on Foata normal form. 332/33731 useless extension candidates. Maximal degree in co-relation 53698. Up to 26966 conditions per place. [2024-06-14 14:18:35,208 INFO L140 encePairwiseOnDemand]: 64/69 looper letters, 45 selfloop transitions, 2 changer transitions 69/124 dead transitions. [2024-06-14 14:18:35,209 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 62 places, 124 transitions, 532 flow [2024-06-14 14:18:35,209 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-06-14 14:18:35,209 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-06-14 14:18:35,212 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 181 transitions. [2024-06-14 14:18:35,213 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5246376811594203 [2024-06-14 14:18:35,213 INFO L175 Difference]: Start difference. First operand has 58 places, 54 transitions, 141 flow. Second operand 5 states and 181 transitions. [2024-06-14 14:18:35,213 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 62 places, 124 transitions, 532 flow [2024-06-14 14:18:35,218 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 60 places, 124 transitions, 527 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-06-14 14:18:35,220 INFO L231 Difference]: Finished difference. Result has 63 places, 55 transitions, 153 flow [2024-06-14 14:18:35,220 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=69, PETRI_DIFFERENCE_MINUEND_FLOW=137, PETRI_DIFFERENCE_MINUEND_PLACES=56, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=54, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=52, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=153, PETRI_PLACES=63, PETRI_TRANSITIONS=55} [2024-06-14 14:18:35,221 INFO L281 CegarLoopForPetriNet]: 62 programPoint places, 1 predicate places. [2024-06-14 14:18:35,221 INFO L495 AbstractCegarLoop]: Abstraction has has 63 places, 55 transitions, 153 flow [2024-06-14 14:18:35,222 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 15.6) internal successors, (78), 5 states have internal predecessors, (78), 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) [2024-06-14 14:18:35,222 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 14:18:35,222 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 14:18:35,222 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-06-14 14:18:35,222 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [thread1Err0ASSERT_VIOLATIONWITNESS_INVARIANT, thread1Err1ASSERT_VIOLATIONWITNESS_INVARIANT, thread1Err1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 9 more)] === [2024-06-14 14:18:35,223 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 14:18:35,223 INFO L85 PathProgramCache]: Analyzing trace with hash -1582400895, now seen corresponding path program 1 times [2024-06-14 14:18:35,223 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 14:18:35,224 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [74338834] [2024-06-14 14:18:35,224 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 14:18:35,224 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 14:18:35,240 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 14:18:35,364 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 14:18:35,365 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 14:18:35,367 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [74338834] [2024-06-14 14:18:35,367 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [74338834] provided 0 perfect and 1 imperfect interpolant sequences [2024-06-14 14:18:35,368 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1162420217] [2024-06-14 14:18:35,368 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 14:18:35,369 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-06-14 14:18:35,369 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-06-14 14:18:35,370 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) [2024-06-14 14:18:35,404 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-06-14 14:18:35,448 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 14:18:35,450 INFO L262 TraceCheckSpWp]: Trace formula consists of 138 conjuncts, 7 conjunts are in the unsatisfiable core [2024-06-14 14:18:35,454 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-06-14 14:18:35,548 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 14:18:35,548 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-06-14 14:18:35,612 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 14:18:35,613 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1162420217] provided 0 perfect and 2 imperfect interpolant sequences [2024-06-14 14:18:35,613 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-06-14 14:18:35,613 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 11 [2024-06-14 14:18:35,613 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1817962364] [2024-06-14 14:18:35,613 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-06-14 14:18:35,614 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-14 14:18:35,615 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 14:18:35,615 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-14 14:18:35,616 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=44, Invalid=88, Unknown=0, NotChecked=0, Total=132 [2024-06-14 14:18:35,678 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 69 [2024-06-14 14:18:35,679 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 63 places, 55 transitions, 153 flow. Second operand has 12 states, 12 states have (on average 11.583333333333334) internal successors, (139), 12 states have internal predecessors, (139), 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) [2024-06-14 14:18:35,679 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 14:18:35,679 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 69 [2024-06-14 14:18:35,679 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 14:18:38,247 INFO L124 PetriNetUnfolderBase]: 33109/44746 cut-off events. [2024-06-14 14:18:38,253 INFO L125 PetriNetUnfolderBase]: For 11608/11608 co-relation queries the response was YES. [2024-06-14 14:18:38,312 INFO L83 FinitePrefix]: Finished finitePrefix Result has 100653 conditions, 44746 events. 33109/44746 cut-off events. For 11608/11608 co-relation queries the response was YES. Maximal size of possible extension queue 1084. Compared 252035 event pairs, 16714 based on Foata normal form. 332/40648 useless extension candidates. Maximal degree in co-relation 100638. Up to 23047 conditions per place. [2024-06-14 14:18:38,435 INFO L140 encePairwiseOnDemand]: 60/69 looper letters, 107 selfloop transitions, 7 changer transitions 69/188 dead transitions. [2024-06-14 14:18:38,435 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 68 places, 188 transitions, 845 flow [2024-06-14 14:18:38,436 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-14 14:18:38,436 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-14 14:18:38,437 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 255 transitions. [2024-06-14 14:18:38,437 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.46195652173913043 [2024-06-14 14:18:38,437 INFO L175 Difference]: Start difference. First operand has 63 places, 55 transitions, 153 flow. Second operand 8 states and 255 transitions. [2024-06-14 14:18:38,437 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 68 places, 188 transitions, 845 flow [2024-06-14 14:18:38,461 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 65 places, 188 transitions, 835 flow, removed 4 selfloop flow, removed 3 redundant places. [2024-06-14 14:18:38,463 INFO L231 Difference]: Finished difference. Result has 69 places, 59 transitions, 201 flow [2024-06-14 14:18:38,463 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=69, PETRI_DIFFERENCE_MINUEND_FLOW=145, PETRI_DIFFERENCE_MINUEND_PLACES=58, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=55, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=48, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=201, PETRI_PLACES=69, PETRI_TRANSITIONS=59} [2024-06-14 14:18:38,463 INFO L281 CegarLoopForPetriNet]: 62 programPoint places, 7 predicate places. [2024-06-14 14:18:38,464 INFO L495 AbstractCegarLoop]: Abstraction has has 69 places, 59 transitions, 201 flow [2024-06-14 14:18:38,464 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 11.583333333333334) internal successors, (139), 12 states have internal predecessors, (139), 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) [2024-06-14 14:18:38,464 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 14:18:38,464 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 14:18:38,479 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2024-06-14 14:18:38,679 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 [2024-06-14 14:18:38,679 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [thread1Err0ASSERT_VIOLATIONWITNESS_INVARIANT, thread1Err1ASSERT_VIOLATIONWITNESS_INVARIANT, thread1Err1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 9 more)] === [2024-06-14 14:18:38,680 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 14:18:38,680 INFO L85 PathProgramCache]: Analyzing trace with hash -75097420, now seen corresponding path program 2 times [2024-06-14 14:18:38,680 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 14:18:38,680 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [403612103] [2024-06-14 14:18:38,680 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 14:18:38,681 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 14:18:38,696 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 14:18:38,804 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 14:18:38,805 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 14:18:38,805 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [403612103] [2024-06-14 14:18:38,805 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [403612103] provided 0 perfect and 1 imperfect interpolant sequences [2024-06-14 14:18:38,806 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1635905287] [2024-06-14 14:18:38,808 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-06-14 14:18:38,808 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-06-14 14:18:38,808 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-06-14 14:18:38,809 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) [2024-06-14 14:18:38,832 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-06-14 14:18:38,883 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2024-06-14 14:18:38,883 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-06-14 14:18:38,884 INFO L262 TraceCheckSpWp]: Trace formula consists of 129 conjuncts, 5 conjunts are in the unsatisfiable core [2024-06-14 14:18:38,886 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-06-14 14:18:38,945 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-06-14 14:18:38,946 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-06-14 14:18:38,946 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1635905287] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 14:18:38,946 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-06-14 14:18:38,946 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [6] total 9 [2024-06-14 14:18:38,946 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [335502072] [2024-06-14 14:18:38,946 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 14:18:38,947 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-06-14 14:18:38,948 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 14:18:38,948 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-06-14 14:18:38,948 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2024-06-14 14:18:38,965 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 69 [2024-06-14 14:18:38,965 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 69 places, 59 transitions, 201 flow. Second operand has 5 states, 5 states have (on average 12.0) internal successors, (60), 5 states have internal predecessors, (60), 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) [2024-06-14 14:18:38,965 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 14:18:38,966 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 69 [2024-06-14 14:18:38,966 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 14:18:40,013 INFO L124 PetriNetUnfolderBase]: 14649/19851 cut-off events. [2024-06-14 14:18:40,013 INFO L125 PetriNetUnfolderBase]: For 13421/13421 co-relation queries the response was YES. [2024-06-14 14:18:40,046 INFO L83 FinitePrefix]: Finished finitePrefix Result has 42905 conditions, 19851 events. 14649/19851 cut-off events. For 13421/13421 co-relation queries the response was YES. Maximal size of possible extension queue 572. Compared 103198 event pairs, 1589 based on Foata normal form. 2170/19936 useless extension candidates. Maximal degree in co-relation 42875. Up to 9404 conditions per place. [2024-06-14 14:18:40,060 INFO L140 encePairwiseOnDemand]: 63/69 looper letters, 0 selfloop transitions, 0 changer transitions 114/114 dead transitions. [2024-06-14 14:18:40,060 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 67 places, 114 transitions, 505 flow [2024-06-14 14:18:40,061 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-06-14 14:18:40,061 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-06-14 14:18:40,061 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 155 transitions. [2024-06-14 14:18:40,061 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4492753623188406 [2024-06-14 14:18:40,062 INFO L175 Difference]: Start difference. First operand has 69 places, 59 transitions, 201 flow. Second operand 5 states and 155 transitions. [2024-06-14 14:18:40,062 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 67 places, 114 transitions, 505 flow [2024-06-14 14:18:40,388 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 61 places, 114 transitions, 487 flow, removed 4 selfloop flow, removed 6 redundant places. [2024-06-14 14:18:40,389 INFO L231 Difference]: Finished difference. Result has 61 places, 0 transitions, 0 flow [2024-06-14 14:18:40,389 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=69, PETRI_DIFFERENCE_MINUEND_FLOW=134, PETRI_DIFFERENCE_MINUEND_PLACES=57, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=53, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=53, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=0, PETRI_PLACES=61, PETRI_TRANSITIONS=0} [2024-06-14 14:18:40,389 INFO L281 CegarLoopForPetriNet]: 62 programPoint places, -1 predicate places. [2024-06-14 14:18:40,390 INFO L495 AbstractCegarLoop]: Abstraction has has 61 places, 0 transitions, 0 flow [2024-06-14 14:18:40,390 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 12.0) internal successors, (60), 5 states have internal predecessors, (60), 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) [2024-06-14 14:18:40,392 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err0ASSERT_VIOLATIONWITNESS_INVARIANT (11 of 12 remaining) [2024-06-14 14:18:40,392 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err1ASSERT_VIOLATIONWITNESS_INVARIANT (10 of 12 remaining) [2024-06-14 14:18:40,392 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (9 of 12 remaining) [2024-06-14 14:18:40,392 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err3INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (8 of 12 remaining) [2024-06-14 14:18:40,393 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT (7 of 12 remaining) [2024-06-14 14:18:40,393 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (6 of 12 remaining) [2024-06-14 14:18:40,393 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (5 of 12 remaining) [2024-06-14 14:18:40,393 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr4INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (4 of 12 remaining) [2024-06-14 14:18:40,393 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err0ASSERT_VIOLATIONWITNESS_INVARIANT (3 of 12 remaining) [2024-06-14 14:18:40,393 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err1ASSERT_VIOLATIONWITNESS_INVARIANT (2 of 12 remaining) [2024-06-14 14:18:40,393 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Thread1of1ForFork3Err0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 12 remaining) [2024-06-14 14:18:40,394 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Thread1of1ForFork3Err5INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 12 remaining) [2024-06-14 14:18:40,406 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2024-06-14 14:18:40,596 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 [2024-06-14 14:18:40,596 INFO L445 BasicCegarLoop]: Path program histogram: [2, 1, 1, 1] [2024-06-14 14:18:40,600 INFO L229 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2024-06-14 14:18:40,600 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2024-06-14 14:18:40,603 INFO L507 ceAbstractionStarter]: Automizer considered 4 witness invariants [2024-06-14 14:18:40,603 INFO L508 ceAbstractionStarter]: WitnessConsidered=4 [2024-06-14 14:18:40,604 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 14.06 02:18:40 BasicIcfg [2024-06-14 14:18:40,604 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2024-06-14 14:18:40,604 INFO L158 Benchmark]: Toolchain (without parser) took 13393.70ms. Allocated memory was 138.4MB in the beginning and 8.2GB in the end (delta: 8.1GB). Free memory was 99.3MB in the beginning and 7.4GB in the end (delta: -7.3GB). Peak memory consumption was 1.3GB. Max. memory is 16.1GB. [2024-06-14 14:18:40,605 INFO L158 Benchmark]: Witness Parser took 0.20ms. Allocated memory is still 138.4MB. Free memory is still 110.6MB. There was no memory consumed. Max. memory is 16.1GB. [2024-06-14 14:18:40,605 INFO L158 Benchmark]: CDTParser took 0.13ms. Allocated memory is still 138.4MB. Free memory is still 107.7MB. There was no memory consumed. Max. memory is 16.1GB. [2024-06-14 14:18:40,605 INFO L158 Benchmark]: CACSL2BoogieTranslator took 264.35ms. Allocated memory is still 138.4MB. Free memory was 99.3MB in the beginning and 83.3MB in the end (delta: 16.0MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. [2024-06-14 14:18:40,605 INFO L158 Benchmark]: Boogie Procedure Inliner took 56.14ms. Allocated memory is still 138.4MB. Free memory was 83.3MB in the beginning and 80.8MB in the end (delta: 2.5MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2024-06-14 14:18:40,606 INFO L158 Benchmark]: Boogie Preprocessor took 80.84ms. Allocated memory is still 138.4MB. Free memory was 80.8MB in the beginning and 77.8MB in the end (delta: 3.0MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2024-06-14 14:18:40,606 INFO L158 Benchmark]: RCFGBuilder took 844.41ms. Allocated memory was 138.4MB in the beginning and 205.5MB in the end (delta: 67.1MB). Free memory was 77.8MB in the beginning and 153.6MB in the end (delta: -75.8MB). Peak memory consumption was 27.8MB. Max. memory is 16.1GB. [2024-06-14 14:18:40,606 INFO L158 Benchmark]: TraceAbstraction took 12142.48ms. Allocated memory was 205.5MB in the beginning and 8.2GB in the end (delta: 8.0GB). Free memory was 152.6MB in the beginning and 7.4GB in the end (delta: -7.2GB). Peak memory consumption was 1.3GB. Max. memory is 16.1GB. [2024-06-14 14:18:40,608 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 0.20ms. Allocated memory is still 138.4MB. Free memory is still 110.6MB. There was no memory consumed. Max. memory is 16.1GB. * CDTParser took 0.13ms. Allocated memory is still 138.4MB. Free memory is still 107.7MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 264.35ms. Allocated memory is still 138.4MB. Free memory was 99.3MB in the beginning and 83.3MB in the end (delta: 16.0MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 56.14ms. Allocated memory is still 138.4MB. Free memory was 83.3MB in the beginning and 80.8MB in the end (delta: 2.5MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 80.84ms. Allocated memory is still 138.4MB. Free memory was 80.8MB in the beginning and 77.8MB in the end (delta: 3.0MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * RCFGBuilder took 844.41ms. Allocated memory was 138.4MB in the beginning and 205.5MB in the end (delta: 67.1MB). Free memory was 77.8MB in the beginning and 153.6MB in the end (delta: -75.8MB). Peak memory consumption was 27.8MB. Max. memory is 16.1GB. * TraceAbstraction took 12142.48ms. Allocated memory was 205.5MB in the beginning and 8.2GB in the end (delta: 8.0GB). Free memory was 152.6MB in the beginning and 7.4GB in the end (delta: -7.2GB). 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, 102 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: 12.0s, OverallIterations: 5, TraceHistogramMax: 2, PathProgramHistogramMax: 2, EmptinessCheckTime: 0.0s, AutomataDifference: 10.4s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 562 SdHoareTripleChecker+Valid, 0.7s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 510 mSDsluCounter, 12 SdHoareTripleChecker+Invalid, 0.6s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 0 mSDsCounter, 17 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 1267 IncrementalHoareTripleChecker+Invalid, 1284 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 17 mSolverCounterUnsat, 12 mSDtfsCounter, 1267 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 65 GetRequests, 38 SyntacticMatches, 1 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 35 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=201occurred 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, 0.8s InterpolantComputationTime, 100 NumberOfCodeBlocks, 98 NumberOfCodeBlocksAsserted, 7 NumberOfCheckSat, 108 ConstructedInterpolants, 0 QuantifiedInterpolants, 609 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! [2024-06-14 14:18:40,632 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