./Ultimate.py --spec ../../../trunk/examples/svcomp/properties/unreach-call.prp --file ../../../trunk/examples/svcomp/pthread/sync01.i --full-output --witness-type correctness_witness --witnessparser.only.consider.loop.invariants false --validate ./goblint.2023-12-19_14-39-08.files/SV-COMP24_unreach-call/sync01.yml/witness.yml --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 13967880 Calling Ultimate with: /root/.sdkman/candidates/java/current/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReachWitnessValidation.xml -i ../../../trunk/examples/svcomp/pthread/sync01.i ./goblint.2023-12-19_14-39-08.files/SV-COMP24_unreach-call/sync01.yml/witness.yml -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --traceabstraction.compute.hoare.annotation.of.negated.interpolant.automaton,.abstraction.and.cfg false --witnessparser.only.consider.loop.invariants false --- Real Ultimate output --- This is Ultimate 0.2.4-wip.fs.extract-columns-1396788-m [2024-02-02 16:07:01,390 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-02-02 16:07:01,454 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-02-02 16:07:01,458 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-02-02 16:07:01,459 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-02-02 16:07:01,484 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-02-02 16:07:01,485 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-02-02 16:07:01,486 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-02-02 16:07:01,486 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-02-02 16:07:01,489 INFO L153 SettingsManager]: * Use memory slicer=true [2024-02-02 16:07:01,489 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-02-02 16:07:01,489 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-02-02 16:07:01,490 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-02-02 16:07:01,491 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-02-02 16:07:01,491 INFO L153 SettingsManager]: * Use SBE=true [2024-02-02 16:07:01,492 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-02-02 16:07:01,492 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-02-02 16:07:01,492 INFO L153 SettingsManager]: * sizeof long=4 [2024-02-02 16:07:01,492 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-02-02 16:07:01,493 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-02-02 16:07:01,493 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-02-02 16:07:01,493 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-02-02 16:07:01,493 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-02-02 16:07:01,494 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-02-02 16:07:01,494 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-02-02 16:07:01,494 INFO L153 SettingsManager]: * sizeof long double=12 [2024-02-02 16:07:01,494 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-02-02 16:07:01,495 INFO L153 SettingsManager]: * Use constant arrays=true [2024-02-02 16:07:01,495 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-02-02 16:07:01,495 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-02-02 16:07:01,496 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-02-02 16:07:01,496 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-02-02 16:07:01,497 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-02-02 16:07:01,497 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-02-02 16:07:01,497 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-02-02 16:07:01,497 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-02-02 16:07:01,497 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-02-02 16:07:01,498 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-02-02 16:07:01,498 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-02-02 16:07:01,498 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-02-02 16:07:01,498 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2024-02-02 16:07:01,498 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-02-02 16:07:01,499 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-02-02 16:07:01,499 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessparser: Only consider loop invariants -> false [2024-02-02 16:07:01,701 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-02-02 16:07:01,716 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-02-02 16:07:01,718 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-02-02 16:07:01,719 INFO L270 PluginConnector]: Initializing CDTParser... [2024-02-02 16:07:01,719 INFO L274 PluginConnector]: CDTParser initialized [2024-02-02 16:07:01,720 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread/sync01.i [2024-02-02 16:07:02,921 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-02-02 16:07:03,140 INFO L384 CDTParser]: Found 1 translation units. [2024-02-02 16:07:03,156 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread/sync01.i [2024-02-02 16:07:03,179 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/88170f9b1/f12af48749e140f9bde3e8e0fe754fb2/FLAGbfd5e8778 [2024-02-02 16:07:03,191 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/88170f9b1/f12af48749e140f9bde3e8e0fe754fb2 [2024-02-02 16:07:03,193 INFO L270 PluginConnector]: Initializing Witness Parser... [2024-02-02 16:07:03,194 INFO L274 PluginConnector]: Witness Parser initialized [2024-02-02 16:07:03,194 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/./goblint.2023-12-19_14-39-08.files/SV-COMP24_unreach-call/sync01.yml/witness.yml [2024-02-02 16:07:03,288 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-02-02 16:07:03,289 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2024-02-02 16:07:03,291 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-02-02 16:07:03,291 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-02-02 16:07:03,295 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-02-02 16:07:03,295 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.02 04:07:03" (1/2) ... [2024-02-02 16:07:03,296 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4ac83cb1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.02 04:07:03, skipping insertion in model container [2024-02-02 16:07:03,296 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.02 04:07:03" (1/2) ... [2024-02-02 16:07:03,297 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@30f89eb9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.02 04:07:03, skipping insertion in model container [2024-02-02 16:07:03,298 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 02.02 04:07:03" (2/2) ... [2024-02-02 16:07:03,298 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4ac83cb1 and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 02.02 04:07:03, skipping insertion in model container [2024-02-02 16:07:03,303 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 02.02 04:07:03" (2/2) ... [2024-02-02 16:07:03,305 INFO L86 nessWitnessExtractor]: Extracting all invariants from correctness witness [2024-02-02 16:07:03,364 INFO L99 nessWitnessExtractor]: Found the following entries in the witness: [2024-02-02 16:07:03,365 INFO L101 nessWitnessExtractor]: Loop invariant at [L946-L946] ((0 <= num) && (num <= 1)) && ((unsigned long )arg == 0UL) [2024-02-02 16:07:03,366 INFO L101 nessWitnessExtractor]: Location invariant before [L935-L935] (unsigned long )arg == 0UL [2024-02-02 16:07:03,366 INFO L101 nessWitnessExtractor]: Location invariant before [L937-L937] (num == 1) && ((unsigned long )arg == 0UL) [2024-02-02 16:07:03,366 INFO L101 nessWitnessExtractor]: Location invariant before [L951-L951] (unsigned long )arg == 0UL [2024-02-02 16:07:03,366 INFO L101 nessWitnessExtractor]: Location invariant before [L957-L957] num == 1 [2024-02-02 16:07:03,367 INFO L101 nessWitnessExtractor]: Location invariant before [L956-L956] num == 0 [2024-02-02 16:07:03,367 INFO L101 nessWitnessExtractor]: Location invariant before [L939-L939] (num == 1) && ((unsigned long )arg == 0UL) [2024-02-02 16:07:03,367 INFO L101 nessWitnessExtractor]: Location invariant before [L940-L940] (unsigned long )arg == 0UL [2024-02-02 16:07:03,367 INFO L101 nessWitnessExtractor]: Location invariant before [L960-L960] num == 1 [2024-02-02 16:07:03,367 INFO L101 nessWitnessExtractor]: Location invariant before [L958-L958] num == 1 [2024-02-02 16:07:03,367 INFO L101 nessWitnessExtractor]: Location invariant before [L950-L950] (unsigned long )arg == 0UL [2024-02-02 16:07:03,367 INFO L101 nessWitnessExtractor]: Loop invariant at [L936-L936] ((0 <= num) && (num <= 1)) && ((unsigned long )arg == 0UL) [2024-02-02 16:07:03,368 INFO L101 nessWitnessExtractor]: Location invariant before [L938-L938] (num == 0) && ((unsigned long )arg == 0UL) [2024-02-02 16:07:03,368 INFO L101 nessWitnessExtractor]: Location invariant before [L945-L945] (unsigned long )arg == 0UL [2024-02-02 16:07:03,368 INFO L101 nessWitnessExtractor]: Location invariant before [L947-L947] (num == 0) && ((unsigned long )arg == 0UL) [2024-02-02 16:07:03,368 INFO L101 nessWitnessExtractor]: Location invariant before [L949-L949] (num == 0) && ((unsigned long )arg == 0UL) [2024-02-02 16:07:03,368 INFO L101 nessWitnessExtractor]: Location invariant before [L941-L941] (unsigned long )arg == 0UL [2024-02-02 16:07:03,368 INFO L101 nessWitnessExtractor]: Location invariant before [L948-L948] (num == 1) && ((unsigned long )arg == 0UL) [2024-02-02 16:07:03,368 INFO L101 nessWitnessExtractor]: Location invariant before [L959-L959] num == 1 [2024-02-02 16:07:03,411 INFO L179 MainTranslator]: Built tables and reachable declarations [2024-02-02 16:07:03,701 WARN L239 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/pthread/sync01.i[42004,42017] [2024-02-02 16:07:03,711 INFO L209 PostProcessor]: Analyzing one entry point: main [2024-02-02 16:07:03,721 INFO L204 MainTranslator]: Completed pre-run Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local [2024-02-02 16:07:03,834 WARN L239 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/pthread/sync01.i[42004,42017] [2024-02-02 16:07:03,835 INFO L209 PostProcessor]: Analyzing one entry point: main [2024-02-02 16:07:03,886 INFO L208 MainTranslator]: Completed translation [2024-02-02 16:07:03,887 INFO L201 PluginConnector]: Adding new model witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 02.02 04:07:03 WrapperNode [2024-02-02 16:07:03,887 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-02-02 16:07:03,888 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-02-02 16:07:03,888 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-02-02 16:07:03,888 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-02-02 16:07:03,893 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 02.02 04:07:03" (1/1) ... [2024-02-02 16:07:03,924 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 02.02 04:07:03" (1/1) ... [2024-02-02 16:07:03,948 INFO L138 Inliner]: procedures = 269, calls = 50, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 77 [2024-02-02 16:07:03,948 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-02-02 16:07:03,949 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-02-02 16:07:03,949 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-02-02 16:07:03,950 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-02-02 16:07:03,958 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 02.02 04:07:03" (1/1) ... [2024-02-02 16:07:03,958 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 02.02 04:07:03" (1/1) ... [2024-02-02 16:07:03,973 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 02.02 04:07:03" (1/1) ... [2024-02-02 16:07:03,987 INFO L175 MemorySlicer]: Split 27 memory accesses to 6 slices as follows [2, 2, 5, 2, 8, 8]. 30 percent of accesses are in the largest equivalence class. The 23 initializations are split as follows [2, 0, 5, 0, 8, 8]. The 2 writes are split as follows [0, 1, 0, 1, 0, 0]. [2024-02-02 16:07:03,989 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 02.02 04:07:03" (1/1) ... [2024-02-02 16:07:03,989 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 02.02 04:07:03" (1/1) ... [2024-02-02 16:07:04,005 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 02.02 04:07:03" (1/1) ... [2024-02-02 16:07:04,010 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 02.02 04:07:03" (1/1) ... [2024-02-02 16:07:04,012 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 02.02 04:07:03" (1/1) ... [2024-02-02 16:07:04,019 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 02.02 04:07:03" (1/1) ... [2024-02-02 16:07:04,021 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-02-02 16:07:04,021 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-02-02 16:07:04,024 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-02-02 16:07:04,024 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-02-02 16:07:04,024 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 02.02 04:07:03" (1/1) ... [2024-02-02 16:07:04,029 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-02-02 16:07:04,035 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-02-02 16:07:04,082 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) [2024-02-02 16:07:04,115 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 [2024-02-02 16:07:04,129 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2024-02-02 16:07:04,129 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2024-02-02 16:07:04,129 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexUnlock [2024-02-02 16:07:04,130 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2024-02-02 16:07:04,130 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2024-02-02 16:07:04,130 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#2 [2024-02-02 16:07:04,130 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#3 [2024-02-02 16:07:04,130 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#4 [2024-02-02 16:07:04,131 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#5 [2024-02-02 16:07:04,131 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2024-02-02 16:07:04,131 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2024-02-02 16:07:04,131 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2024-02-02 16:07:04,132 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2024-02-02 16:07:04,132 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-02-02 16:07:04,132 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2024-02-02 16:07:04,132 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#2 [2024-02-02 16:07:04,132 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#3 [2024-02-02 16:07:04,132 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#4 [2024-02-02 16:07:04,132 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#5 [2024-02-02 16:07:04,132 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2024-02-02 16:07:04,133 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-02-02 16:07:04,133 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-02-02 16:07:04,133 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-02-02 16:07:04,133 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2024-02-02 16:07:04,133 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#3 [2024-02-02 16:07:04,133 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#4 [2024-02-02 16:07:04,133 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#5 [2024-02-02 16:07:04,134 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-02-02 16:07:04,134 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-02-02 16:07:04,135 WARN L214 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2024-02-02 16:07:04,284 INFO L244 CfgBuilder]: Building ICFG [2024-02-02 16:07:04,286 INFO L270 CfgBuilder]: Building CFG for each procedure with an implementation [2024-02-02 16:07:04,455 INFO L289 CfgBuilder]: Ommited future-live optimization because the input is a concurrent program. [2024-02-02 16:07:04,456 INFO L293 CfgBuilder]: Performing block encoding [2024-02-02 16:07:04,545 INFO L315 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-02-02 16:07:04,546 INFO L320 CfgBuilder]: Removed 2 assume(true) statements. [2024-02-02 16:07:04,546 INFO L201 PluginConnector]: Adding new model witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.02 04:07:04 BoogieIcfgContainer [2024-02-02 16:07:04,546 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-02-02 16:07:04,547 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-02-02 16:07:04,548 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-02-02 16:07:04,550 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-02-02 16:07:04,550 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 02.02 04:07:03" (1/4) ... [2024-02-02 16:07:04,551 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7345320f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.02 04:07:04, skipping insertion in model container [2024-02-02 16:07:04,551 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 02.02 04:07:03" (2/4) ... [2024-02-02 16:07:04,551 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7345320f and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CORRECTNESS_WITNESS 02.02 04:07:04, skipping insertion in model container [2024-02-02 16:07:04,551 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 02.02 04:07:03" (3/4) ... [2024-02-02 16:07:04,551 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7345320f and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CORRECTNESS_WITNESS 02.02 04:07:04, skipping insertion in model container [2024-02-02 16:07:04,551 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.02 04:07:04" (4/4) ... [2024-02-02 16:07:04,552 INFO L112 eAbstractionObserver]: Analyzing ICFG sync01.i [2024-02-02 16:07:04,566 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-02-02 16:07:04,567 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 20 error locations. [2024-02-02 16:07:04,567 INFO L518 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-02-02 16:07:04,630 INFO L144 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2024-02-02 16:07:04,663 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 76 places, 74 transitions, 162 flow [2024-02-02 16:07:04,687 INFO L124 PetriNetUnfolderBase]: 5/72 cut-off events. [2024-02-02 16:07:04,689 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2024-02-02 16:07:04,694 INFO L83 FinitePrefix]: Finished finitePrefix Result has 81 conditions, 72 events. 5/72 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 143 event pairs, 0 based on Foata normal form. 0/47 useless extension candidates. Maximal degree in co-relation 53. Up to 2 conditions per place. [2024-02-02 16:07:04,694 INFO L82 GeneralOperation]: Start removeDead. Operand has 76 places, 74 transitions, 162 flow [2024-02-02 16:07:04,699 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 72 places, 69 transitions, 150 flow [2024-02-02 16:07:04,707 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-02-02 16:07:04,714 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;@326cd8ec, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-02-02 16:07:04,715 INFO L358 AbstractCegarLoop]: Starting to check reachability of 36 error locations. [2024-02-02 16:07:04,718 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-02-02 16:07:04,719 INFO L124 PetriNetUnfolderBase]: 0/1 cut-off events. [2024-02-02 16:07:04,719 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-02-02 16:07:04,719 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-02-02 16:07:04,719 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1] [2024-02-02 16:07:04,720 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [thread1Err0ASSERT_VIOLATIONWITNESS_INVARIANT, thread1Err1ASSERT_VIOLATIONWITNESS_INVARIANT, thread1Err3ASSERT_VIOLATIONWITNESS_INVARIANT (and 33 more)] === [2024-02-02 16:07:04,724 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-02 16:07:04,724 INFO L85 PathProgramCache]: Analyzing trace with hash 10558, now seen corresponding path program 1 times [2024-02-02 16:07:04,734 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-02 16:07:04,735 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [862407761] [2024-02-02 16:07:04,735 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-02 16:07:04,735 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-02 16:07:04,829 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-02 16:07:04,946 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-02 16:07:04,946 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-02 16:07:04,946 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [862407761] [2024-02-02 16:07:04,947 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [862407761] provided 1 perfect and 0 imperfect interpolant sequences [2024-02-02 16:07:04,947 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-02-02 16:07:04,947 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-02-02 16:07:04,948 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1051101017] [2024-02-02 16:07:04,948 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-02 16:07:04,954 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-02-02 16:07:04,958 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-02 16:07:05,008 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-02-02 16:07:05,008 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-02-02 16:07:05,105 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 36 out of 74 [2024-02-02 16:07:05,108 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 72 places, 69 transitions, 150 flow. Second operand has 3 states, 3 states have (on average 36.666666666666664) internal successors, (110), 3 states have internal predecessors, (110), 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) [2024-02-02 16:07:05,108 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-02 16:07:05,108 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 36 of 74 [2024-02-02 16:07:05,109 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-02 16:07:05,400 INFO L124 PetriNetUnfolderBase]: 424/1134 cut-off events. [2024-02-02 16:07:05,400 INFO L125 PetriNetUnfolderBase]: For 43/43 co-relation queries the response was YES. [2024-02-02 16:07:05,406 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1953 conditions, 1134 events. 424/1134 cut-off events. For 43/43 co-relation queries the response was YES. Maximal size of possible extension queue 79. Compared 7749 event pairs, 116 based on Foata normal form. 159/1149 useless extension candidates. Maximal degree in co-relation 1730. Up to 405 conditions per place. [2024-02-02 16:07:05,416 INFO L140 encePairwiseOnDemand]: 60/74 looper letters, 42 selfloop transitions, 7 changer transitions 0/83 dead transitions. [2024-02-02 16:07:05,417 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 73 places, 83 transitions, 282 flow [2024-02-02 16:07:05,418 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-02-02 16:07:05,420 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-02-02 16:07:05,426 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 166 transitions. [2024-02-02 16:07:05,428 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.7477477477477478 [2024-02-02 16:07:05,429 INFO L175 Difference]: Start difference. First operand has 72 places, 69 transitions, 150 flow. Second operand 3 states and 166 transitions. [2024-02-02 16:07:05,430 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 73 places, 83 transitions, 282 flow [2024-02-02 16:07:05,435 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 69 places, 83 transitions, 270 flow, removed 0 selfloop flow, removed 4 redundant places. [2024-02-02 16:07:05,441 INFO L231 Difference]: Finished difference. Result has 71 places, 70 transitions, 188 flow [2024-02-02 16:07:05,443 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=74, PETRI_DIFFERENCE_MINUEND_FLOW=136, PETRI_DIFFERENCE_MINUEND_PLACES=67, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=66, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=59, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=188, PETRI_PLACES=71, PETRI_TRANSITIONS=70} [2024-02-02 16:07:05,447 INFO L281 CegarLoopForPetriNet]: 72 programPoint places, -1 predicate places. [2024-02-02 16:07:05,447 INFO L495 AbstractCegarLoop]: Abstraction has has 71 places, 70 transitions, 188 flow [2024-02-02 16:07:05,448 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 36.666666666666664) internal successors, (110), 3 states have internal predecessors, (110), 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) [2024-02-02 16:07:05,448 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-02-02 16:07:05,448 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2024-02-02 16:07:05,448 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-02-02 16:07:05,449 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [thread1Err0ASSERT_VIOLATIONWITNESS_INVARIANT, thread1Err1ASSERT_VIOLATIONWITNESS_INVARIANT, thread1Err3ASSERT_VIOLATIONWITNESS_INVARIANT (and 33 more)] === [2024-02-02 16:07:05,450 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-02 16:07:05,450 INFO L85 PathProgramCache]: Analyzing trace with hash 327660, now seen corresponding path program 1 times [2024-02-02 16:07:05,451 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-02 16:07:05,451 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [620098043] [2024-02-02 16:07:05,451 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-02 16:07:05,451 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-02 16:07:05,483 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-02 16:07:05,513 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-02 16:07:05,513 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-02 16:07:05,513 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [620098043] [2024-02-02 16:07:05,513 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [620098043] provided 1 perfect and 0 imperfect interpolant sequences [2024-02-02 16:07:05,514 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-02-02 16:07:05,514 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-02-02 16:07:05,514 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1682809398] [2024-02-02 16:07:05,514 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-02 16:07:05,515 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-02-02 16:07:05,515 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-02 16:07:05,515 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-02-02 16:07:05,516 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-02-02 16:07:05,554 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 33 out of 74 [2024-02-02 16:07:05,556 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 71 places, 70 transitions, 188 flow. Second operand has 3 states, 3 states have (on average 34.0) internal successors, (102), 3 states have internal predecessors, (102), 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) [2024-02-02 16:07:05,556 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-02 16:07:05,557 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 33 of 74 [2024-02-02 16:07:05,557 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-02 16:07:05,623 INFO L124 PetriNetUnfolderBase]: 143/441 cut-off events. [2024-02-02 16:07:05,623 INFO L125 PetriNetUnfolderBase]: For 104/106 co-relation queries the response was YES. [2024-02-02 16:07:05,624 INFO L83 FinitePrefix]: Finished finitePrefix Result has 828 conditions, 441 events. 143/441 cut-off events. For 104/106 co-relation queries the response was YES. Maximal size of possible extension queue 30. Compared 2393 event pairs, 53 based on Foata normal form. 28/414 useless extension candidates. Maximal degree in co-relation 235. Up to 146 conditions per place. [2024-02-02 16:07:05,626 INFO L140 encePairwiseOnDemand]: 63/74 looper letters, 29 selfloop transitions, 3 changer transitions 2/61 dead transitions. [2024-02-02 16:07:05,627 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 63 places, 61 transitions, 218 flow [2024-02-02 16:07:05,627 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-02-02 16:07:05,627 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-02-02 16:07:05,630 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 140 transitions. [2024-02-02 16:07:05,632 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6306306306306306 [2024-02-02 16:07:05,632 INFO L175 Difference]: Start difference. First operand has 71 places, 70 transitions, 188 flow. Second operand 3 states and 140 transitions. [2024-02-02 16:07:05,632 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 63 places, 61 transitions, 218 flow [2024-02-02 16:07:05,634 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 61 places, 61 transitions, 208 flow, removed 1 selfloop flow, removed 2 redundant places. [2024-02-02 16:07:05,635 INFO L231 Difference]: Finished difference. Result has 62 places, 53 transitions, 136 flow [2024-02-02 16:07:05,635 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=74, PETRI_DIFFERENCE_MINUEND_FLOW=130, PETRI_DIFFERENCE_MINUEND_PLACES=59, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=55, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=52, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=136, PETRI_PLACES=62, PETRI_TRANSITIONS=53} [2024-02-02 16:07:05,636 INFO L281 CegarLoopForPetriNet]: 72 programPoint places, -10 predicate places. [2024-02-02 16:07:05,637 INFO L495 AbstractCegarLoop]: Abstraction has has 62 places, 53 transitions, 136 flow [2024-02-02 16:07:05,637 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 34.0) internal successors, (102), 3 states have internal predecessors, (102), 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) [2024-02-02 16:07:05,637 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-02-02 16:07:05,637 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-02-02 16:07:05,637 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-02-02 16:07:05,637 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting thread1Err0ASSERT_VIOLATIONWITNESS_INVARIANT === [thread1Err0ASSERT_VIOLATIONWITNESS_INVARIANT, thread1Err1ASSERT_VIOLATIONWITNESS_INVARIANT, thread1Err3ASSERT_VIOLATIONWITNESS_INVARIANT (and 33 more)] === [2024-02-02 16:07:05,639 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-02 16:07:05,640 INFO L85 PathProgramCache]: Analyzing trace with hash 1910676016, now seen corresponding path program 1 times [2024-02-02 16:07:05,640 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-02 16:07:05,640 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [912702572] [2024-02-02 16:07:05,641 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-02 16:07:05,641 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-02 16:07:05,688 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-02 16:07:05,857 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-02 16:07:05,858 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-02 16:07:05,858 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [912702572] [2024-02-02 16:07:05,858 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [912702572] provided 1 perfect and 0 imperfect interpolant sequences [2024-02-02 16:07:05,858 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-02-02 16:07:05,858 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-02-02 16:07:05,859 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2013686538] [2024-02-02 16:07:05,859 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-02 16:07:05,859 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-02-02 16:07:05,859 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-02 16:07:05,860 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-02-02 16:07:05,860 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-02-02 16:07:05,879 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 43 out of 74 [2024-02-02 16:07:05,880 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 62 places, 53 transitions, 136 flow. Second operand has 4 states, 4 states have (on average 44.75) internal successors, (179), 4 states have internal predecessors, (179), 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) [2024-02-02 16:07:05,881 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-02 16:07:05,881 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 43 of 74 [2024-02-02 16:07:05,881 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-02 16:07:05,951 INFO L124 PetriNetUnfolderBase]: 99/353 cut-off events. [2024-02-02 16:07:05,952 INFO L125 PetriNetUnfolderBase]: For 38/39 co-relation queries the response was YES. [2024-02-02 16:07:05,953 INFO L83 FinitePrefix]: Finished finitePrefix Result has 641 conditions, 353 events. 99/353 cut-off events. For 38/39 co-relation queries the response was YES. Maximal size of possible extension queue 24. Compared 1802 event pairs, 14 based on Foata normal form. 20/328 useless extension candidates. Maximal degree in co-relation 241. Up to 171 conditions per place. [2024-02-02 16:07:05,954 INFO L140 encePairwiseOnDemand]: 69/74 looper letters, 26 selfloop transitions, 2 changer transitions 0/57 dead transitions. [2024-02-02 16:07:05,955 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 60 places, 57 transitions, 206 flow [2024-02-02 16:07:05,955 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-02-02 16:07:05,955 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-02-02 16:07:05,956 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 203 transitions. [2024-02-02 16:07:05,957 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6858108108108109 [2024-02-02 16:07:05,957 INFO L175 Difference]: Start difference. First operand has 62 places, 53 transitions, 136 flow. Second operand 4 states and 203 transitions. [2024-02-02 16:07:05,957 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 60 places, 57 transitions, 206 flow [2024-02-02 16:07:05,959 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 58 places, 57 transitions, 198 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-02-02 16:07:05,960 INFO L231 Difference]: Finished difference. Result has 58 places, 50 transitions, 128 flow [2024-02-02 16:07:05,960 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=74, PETRI_DIFFERENCE_MINUEND_FLOW=124, PETRI_DIFFERENCE_MINUEND_PLACES=55, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=50, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=48, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=128, PETRI_PLACES=58, PETRI_TRANSITIONS=50} [2024-02-02 16:07:05,961 INFO L281 CegarLoopForPetriNet]: 72 programPoint places, -14 predicate places. [2024-02-02 16:07:05,962 INFO L495 AbstractCegarLoop]: Abstraction has has 58 places, 50 transitions, 128 flow [2024-02-02 16:07:05,962 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 44.75) internal successors, (179), 4 states have internal predecessors, (179), 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) [2024-02-02 16:07:05,962 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-02-02 16:07:05,962 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-02-02 16:07:05,962 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-02-02 16:07:05,963 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting thread2Err0ASSERT_VIOLATIONWITNESS_INVARIANT === [thread1Err0ASSERT_VIOLATIONWITNESS_INVARIANT, thread1Err1ASSERT_VIOLATIONWITNESS_INVARIANT, thread1Err3ASSERT_VIOLATIONWITNESS_INVARIANT (and 33 more)] === [2024-02-02 16:07:05,963 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-02 16:07:05,963 INFO L85 PathProgramCache]: Analyzing trace with hash -2087781323, now seen corresponding path program 1 times [2024-02-02 16:07:05,963 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-02 16:07:05,964 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2004725908] [2024-02-02 16:07:05,964 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-02 16:07:05,967 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-02 16:07:05,979 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-02 16:07:06,043 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-02 16:07:06,043 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-02 16:07:06,044 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2004725908] [2024-02-02 16:07:06,045 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2004725908] provided 1 perfect and 0 imperfect interpolant sequences [2024-02-02 16:07:06,045 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-02-02 16:07:06,045 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-02-02 16:07:06,045 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1874269919] [2024-02-02 16:07:06,046 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-02 16:07:06,046 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-02-02 16:07:06,046 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-02 16:07:06,047 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-02-02 16:07:06,047 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-02-02 16:07:06,068 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 43 out of 74 [2024-02-02 16:07:06,069 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 58 places, 50 transitions, 128 flow. Second operand has 4 states, 4 states have (on average 45.25) internal successors, (181), 4 states have internal predecessors, (181), 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) [2024-02-02 16:07:06,069 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-02 16:07:06,069 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 43 of 74 [2024-02-02 16:07:06,069 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-02 16:07:06,136 INFO L124 PetriNetUnfolderBase]: 117/397 cut-off events. [2024-02-02 16:07:06,136 INFO L125 PetriNetUnfolderBase]: For 24/28 co-relation queries the response was YES. [2024-02-02 16:07:06,137 INFO L83 FinitePrefix]: Finished finitePrefix Result has 707 conditions, 397 events. 117/397 cut-off events. For 24/28 co-relation queries the response was YES. Maximal size of possible extension queue 26. Compared 2100 event pairs, 42 based on Foata normal form. 26/375 useless extension candidates. Maximal degree in co-relation 684. Up to 180 conditions per place. [2024-02-02 16:07:06,138 INFO L140 encePairwiseOnDemand]: 69/74 looper letters, 26 selfloop transitions, 2 changer transitions 0/54 dead transitions. [2024-02-02 16:07:06,138 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 58 places, 54 transitions, 192 flow [2024-02-02 16:07:06,139 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-02-02 16:07:06,139 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-02-02 16:07:06,139 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 203 transitions. [2024-02-02 16:07:06,139 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6858108108108109 [2024-02-02 16:07:06,140 INFO L175 Difference]: Start difference. First operand has 58 places, 50 transitions, 128 flow. Second operand 4 states and 203 transitions. [2024-02-02 16:07:06,140 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 58 places, 54 transitions, 192 flow [2024-02-02 16:07:06,142 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 56 places, 54 transitions, 189 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-02-02 16:07:06,143 INFO L231 Difference]: Finished difference. Result has 56 places, 47 transitions, 123 flow [2024-02-02 16:07:06,143 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=74, PETRI_DIFFERENCE_MINUEND_FLOW=119, PETRI_DIFFERENCE_MINUEND_PLACES=53, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=47, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=45, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=123, PETRI_PLACES=56, PETRI_TRANSITIONS=47} [2024-02-02 16:07:06,144 INFO L281 CegarLoopForPetriNet]: 72 programPoint places, -16 predicate places. [2024-02-02 16:07:06,144 INFO L495 AbstractCegarLoop]: Abstraction has has 56 places, 47 transitions, 123 flow [2024-02-02 16:07:06,144 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 45.25) internal successors, (181), 4 states have internal predecessors, (181), 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) [2024-02-02 16:07:06,145 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-02-02 16:07:06,145 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-02-02 16:07:06,145 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-02-02 16:07:06,145 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting thread1Err1ASSERT_VIOLATIONWITNESS_INVARIANT === [thread1Err0ASSERT_VIOLATIONWITNESS_INVARIANT, thread1Err1ASSERT_VIOLATIONWITNESS_INVARIANT, thread1Err3ASSERT_VIOLATIONWITNESS_INVARIANT (and 33 more)] === [2024-02-02 16:07:06,145 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-02 16:07:06,146 INFO L85 PathProgramCache]: Analyzing trace with hash -252015774, now seen corresponding path program 1 times [2024-02-02 16:07:06,146 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-02 16:07:06,146 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [611617533] [2024-02-02 16:07:06,148 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-02 16:07:06,149 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-02 16:07:06,162 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-02 16:07:06,235 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-02 16:07:06,240 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-02 16:07:06,240 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [611617533] [2024-02-02 16:07:06,240 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [611617533] provided 1 perfect and 0 imperfect interpolant sequences [2024-02-02 16:07:06,241 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-02-02 16:07:06,241 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-02-02 16:07:06,241 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1743415198] [2024-02-02 16:07:06,241 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-02 16:07:06,241 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-02-02 16:07:06,242 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-02 16:07:06,242 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-02-02 16:07:06,242 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-02-02 16:07:06,289 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 23 out of 74 [2024-02-02 16:07:06,290 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 56 places, 47 transitions, 123 flow. Second operand has 4 states, 4 states have (on average 25.75) internal successors, (103), 4 states have internal predecessors, (103), 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) [2024-02-02 16:07:06,290 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-02 16:07:06,290 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 23 of 74 [2024-02-02 16:07:06,290 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-02 16:07:06,360 INFO L124 PetriNetUnfolderBase]: 219/509 cut-off events. [2024-02-02 16:07:06,360 INFO L125 PetriNetUnfolderBase]: For 24/26 co-relation queries the response was YES. [2024-02-02 16:07:06,361 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1050 conditions, 509 events. 219/509 cut-off events. For 24/26 co-relation queries the response was YES. Maximal size of possible extension queue 28. Compared 2354 event pairs, 35 based on Foata normal form. 6/476 useless extension candidates. Maximal degree in co-relation 899. Up to 226 conditions per place. [2024-02-02 16:07:06,362 INFO L140 encePairwiseOnDemand]: 67/74 looper letters, 39 selfloop transitions, 5 changer transitions 2/60 dead transitions. [2024-02-02 16:07:06,362 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 58 places, 60 transitions, 248 flow [2024-02-02 16:07:06,363 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-02-02 16:07:06,363 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-02-02 16:07:06,364 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 141 transitions. [2024-02-02 16:07:06,364 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.47635135135135137 [2024-02-02 16:07:06,364 INFO L175 Difference]: Start difference. First operand has 56 places, 47 transitions, 123 flow. Second operand 4 states and 141 transitions. [2024-02-02 16:07:06,382 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 58 places, 60 transitions, 248 flow [2024-02-02 16:07:06,383 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 56 places, 60 transitions, 243 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-02-02 16:07:06,384 INFO L231 Difference]: Finished difference. Result has 58 places, 48 transitions, 147 flow [2024-02-02 16:07:06,385 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=74, PETRI_DIFFERENCE_MINUEND_FLOW=118, PETRI_DIFFERENCE_MINUEND_PLACES=53, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=46, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=42, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=147, PETRI_PLACES=58, PETRI_TRANSITIONS=48} [2024-02-02 16:07:06,386 INFO L281 CegarLoopForPetriNet]: 72 programPoint places, -14 predicate places. [2024-02-02 16:07:06,386 INFO L495 AbstractCegarLoop]: Abstraction has has 58 places, 48 transitions, 147 flow [2024-02-02 16:07:06,387 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 25.75) internal successors, (103), 4 states have internal predecessors, (103), 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) [2024-02-02 16:07:06,387 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-02-02 16:07:06,387 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-02-02 16:07:06,387 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-02-02 16:07:06,387 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting thread2Err1ASSERT_VIOLATIONWITNESS_INVARIANT === [thread1Err0ASSERT_VIOLATIONWITNESS_INVARIANT, thread1Err1ASSERT_VIOLATIONWITNESS_INVARIANT, thread1Err3ASSERT_VIOLATIONWITNESS_INVARIANT (and 33 more)] === [2024-02-02 16:07:06,387 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-02 16:07:06,388 INFO L85 PathProgramCache]: Analyzing trace with hash -1671590827, now seen corresponding path program 1 times [2024-02-02 16:07:06,388 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-02 16:07:06,388 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2051855220] [2024-02-02 16:07:06,388 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-02 16:07:06,388 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-02 16:07:06,400 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-02 16:07:06,441 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-02 16:07:06,442 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-02 16:07:06,442 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2051855220] [2024-02-02 16:07:06,442 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2051855220] provided 1 perfect and 0 imperfect interpolant sequences [2024-02-02 16:07:06,442 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-02-02 16:07:06,442 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-02-02 16:07:06,442 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1861039658] [2024-02-02 16:07:06,443 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-02 16:07:06,443 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-02-02 16:07:06,443 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-02 16:07:06,443 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-02-02 16:07:06,444 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-02-02 16:07:06,490 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 24 out of 74 [2024-02-02 16:07:06,490 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 58 places, 48 transitions, 147 flow. Second operand has 4 states, 4 states have (on average 27.25) internal successors, (109), 4 states have internal predecessors, (109), 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) [2024-02-02 16:07:06,491 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-02 16:07:06,491 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 24 of 74 [2024-02-02 16:07:06,491 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-02 16:07:06,569 INFO L124 PetriNetUnfolderBase]: 239/551 cut-off events. [2024-02-02 16:07:06,569 INFO L125 PetriNetUnfolderBase]: For 95/104 co-relation queries the response was YES. [2024-02-02 16:07:06,570 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1193 conditions, 551 events. 239/551 cut-off events. For 95/104 co-relation queries the response was YES. Maximal size of possible extension queue 27. Compared 2583 event pairs, 54 based on Foata normal form. 10/549 useless extension candidates. Maximal degree in co-relation 1166. Up to 170 conditions per place. [2024-02-02 16:07:06,572 INFO L140 encePairwiseOnDemand]: 66/74 looper letters, 35 selfloop transitions, 5 changer transitions 9/64 dead transitions. [2024-02-02 16:07:06,572 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 59 places, 64 transitions, 280 flow [2024-02-02 16:07:06,572 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-02-02 16:07:06,572 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-02-02 16:07:06,573 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 146 transitions. [2024-02-02 16:07:06,573 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.49324324324324326 [2024-02-02 16:07:06,573 INFO L175 Difference]: Start difference. First operand has 58 places, 48 transitions, 147 flow. Second operand 4 states and 146 transitions. [2024-02-02 16:07:06,573 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 59 places, 64 transitions, 280 flow [2024-02-02 16:07:06,574 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 58 places, 64 transitions, 276 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-02-02 16:07:06,575 INFO L231 Difference]: Finished difference. Result has 59 places, 46 transitions, 156 flow [2024-02-02 16:07:06,575 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=74, PETRI_DIFFERENCE_MINUEND_FLOW=139, PETRI_DIFFERENCE_MINUEND_PLACES=55, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=46, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=41, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=156, PETRI_PLACES=59, PETRI_TRANSITIONS=46} [2024-02-02 16:07:06,576 INFO L281 CegarLoopForPetriNet]: 72 programPoint places, -13 predicate places. [2024-02-02 16:07:06,576 INFO L495 AbstractCegarLoop]: Abstraction has has 59 places, 46 transitions, 156 flow [2024-02-02 16:07:06,576 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 27.25) internal successors, (109), 4 states have internal predecessors, (109), 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) [2024-02-02 16:07:06,576 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-02-02 16:07:06,576 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-02-02 16:07:06,576 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-02-02 16:07:06,576 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting thread2Err4ASSERT_VIOLATIONWITNESS_INVARIANT === [thread1Err0ASSERT_VIOLATIONWITNESS_INVARIANT, thread1Err1ASSERT_VIOLATIONWITNESS_INVARIANT, thread1Err3ASSERT_VIOLATIONWITNESS_INVARIANT (and 33 more)] === [2024-02-02 16:07:06,577 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-02 16:07:06,577 INFO L85 PathProgramCache]: Analyzing trace with hash 1783864284, now seen corresponding path program 1 times [2024-02-02 16:07:06,577 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-02 16:07:06,577 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [919410437] [2024-02-02 16:07:06,577 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-02 16:07:06,577 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-02 16:07:06,588 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-02 16:07:06,649 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-02 16:07:06,650 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-02 16:07:06,650 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [919410437] [2024-02-02 16:07:06,650 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [919410437] provided 1 perfect and 0 imperfect interpolant sequences [2024-02-02 16:07:06,650 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-02-02 16:07:06,650 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-02-02 16:07:06,650 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [455080852] [2024-02-02 16:07:06,651 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-02 16:07:06,651 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-02-02 16:07:06,651 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-02 16:07:06,651 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-02-02 16:07:06,651 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-02-02 16:07:06,718 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 19 out of 74 [2024-02-02 16:07:06,718 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 59 places, 46 transitions, 156 flow. Second operand has 5 states, 5 states have (on average 22.2) internal successors, (111), 5 states have internal predecessors, (111), 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) [2024-02-02 16:07:06,719 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-02 16:07:06,719 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 19 of 74 [2024-02-02 16:07:06,719 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-02 16:07:06,807 INFO L124 PetriNetUnfolderBase]: 242/542 cut-off events. [2024-02-02 16:07:06,807 INFO L125 PetriNetUnfolderBase]: For 165/165 co-relation queries the response was YES. [2024-02-02 16:07:06,808 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1282 conditions, 542 events. 242/542 cut-off events. For 165/165 co-relation queries the response was YES. Maximal size of possible extension queue 23. Compared 2450 event pairs, 46 based on Foata normal form. 16/554 useless extension candidates. Maximal degree in co-relation 1253. Up to 222 conditions per place. [2024-02-02 16:07:06,810 INFO L140 encePairwiseOnDemand]: 69/74 looper letters, 39 selfloop transitions, 5 changer transitions 1/57 dead transitions. [2024-02-02 16:07:06,810 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 63 places, 57 transitions, 272 flow [2024-02-02 16:07:06,810 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-02-02 16:07:06,810 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-02-02 16:07:06,811 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 140 transitions. [2024-02-02 16:07:06,811 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3783783783783784 [2024-02-02 16:07:06,811 INFO L175 Difference]: Start difference. First operand has 59 places, 46 transitions, 156 flow. Second operand 5 states and 140 transitions. [2024-02-02 16:07:06,811 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 63 places, 57 transitions, 272 flow [2024-02-02 16:07:06,812 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 60 places, 57 transitions, 262 flow, removed 0 selfloop flow, removed 3 redundant places. [2024-02-02 16:07:06,813 INFO L231 Difference]: Finished difference. Result has 61 places, 46 transitions, 161 flow [2024-02-02 16:07:06,813 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=74, PETRI_DIFFERENCE_MINUEND_FLOW=146, PETRI_DIFFERENCE_MINUEND_PLACES=56, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=46, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=41, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=161, PETRI_PLACES=61, PETRI_TRANSITIONS=46} [2024-02-02 16:07:06,814 INFO L281 CegarLoopForPetriNet]: 72 programPoint places, -11 predicate places. [2024-02-02 16:07:06,814 INFO L495 AbstractCegarLoop]: Abstraction has has 61 places, 46 transitions, 161 flow [2024-02-02 16:07:06,814 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 22.2) internal successors, (111), 5 states have internal predecessors, (111), 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) [2024-02-02 16:07:06,814 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-02-02 16:07:06,815 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-02-02 16:07:06,815 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-02-02 16:07:06,815 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting thread1Err1ASSERT_VIOLATIONWITNESS_INVARIANT === [thread1Err0ASSERT_VIOLATIONWITNESS_INVARIANT, thread1Err1ASSERT_VIOLATIONWITNESS_INVARIANT, thread1Err3ASSERT_VIOLATIONWITNESS_INVARIANT (and 33 more)] === [2024-02-02 16:07:06,815 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-02 16:07:06,815 INFO L85 PathProgramCache]: Analyzing trace with hash 537302120, now seen corresponding path program 1 times [2024-02-02 16:07:06,815 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-02 16:07:06,816 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1891526285] [2024-02-02 16:07:06,816 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-02 16:07:06,816 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-02 16:07:06,826 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-02 16:07:06,878 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-02 16:07:06,878 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-02 16:07:06,878 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1891526285] [2024-02-02 16:07:06,878 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1891526285] provided 1 perfect and 0 imperfect interpolant sequences [2024-02-02 16:07:06,879 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-02-02 16:07:06,879 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-02-02 16:07:06,879 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1282904874] [2024-02-02 16:07:06,879 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-02 16:07:06,879 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-02-02 16:07:06,879 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-02 16:07:06,880 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-02-02 16:07:06,880 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-02-02 16:07:06,880 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 47 out of 74 [2024-02-02 16:07:06,880 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 61 places, 46 transitions, 161 flow. Second operand has 3 states, 3 states have (on average 50.333333333333336) internal successors, (151), 3 states have internal predecessors, (151), 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) [2024-02-02 16:07:06,881 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-02 16:07:06,881 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 47 of 74 [2024-02-02 16:07:06,881 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-02 16:07:06,917 INFO L124 PetriNetUnfolderBase]: 40/192 cut-off events. [2024-02-02 16:07:06,917 INFO L125 PetriNetUnfolderBase]: For 103/103 co-relation queries the response was YES. [2024-02-02 16:07:06,918 INFO L83 FinitePrefix]: Finished finitePrefix Result has 409 conditions, 192 events. 40/192 cut-off events. For 103/103 co-relation queries the response was YES. Maximal size of possible extension queue 10. Compared 699 event pairs, 15 based on Foata normal form. 10/192 useless extension candidates. Maximal degree in co-relation 381. Up to 58 conditions per place. [2024-02-02 16:07:06,918 INFO L140 encePairwiseOnDemand]: 68/74 looper letters, 15 selfloop transitions, 5 changer transitions 8/48 dead transitions. [2024-02-02 16:07:06,918 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 61 places, 48 transitions, 214 flow [2024-02-02 16:07:06,918 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-02-02 16:07:06,919 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-02-02 16:07:06,919 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 168 transitions. [2024-02-02 16:07:06,919 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.7567567567567568 [2024-02-02 16:07:06,919 INFO L175 Difference]: Start difference. First operand has 61 places, 46 transitions, 161 flow. Second operand 3 states and 168 transitions. [2024-02-02 16:07:06,919 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 61 places, 48 transitions, 214 flow [2024-02-02 16:07:06,920 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 55 places, 48 transitions, 190 flow, removed 3 selfloop flow, removed 6 redundant places. [2024-02-02 16:07:06,921 INFO L231 Difference]: Finished difference. Result has 55 places, 36 transitions, 117 flow [2024-02-02 16:07:06,921 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=74, PETRI_DIFFERENCE_MINUEND_FLOW=129, PETRI_DIFFERENCE_MINUEND_PLACES=53, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=44, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=39, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=117, PETRI_PLACES=55, PETRI_TRANSITIONS=36} [2024-02-02 16:07:06,921 INFO L281 CegarLoopForPetriNet]: 72 programPoint places, -17 predicate places. [2024-02-02 16:07:06,921 INFO L495 AbstractCegarLoop]: Abstraction has has 55 places, 36 transitions, 117 flow [2024-02-02 16:07:06,922 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 50.333333333333336) internal successors, (151), 3 states have internal predecessors, (151), 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) [2024-02-02 16:07:06,922 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-02-02 16:07:06,922 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-02-02 16:07:06,922 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-02-02 16:07:06,922 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting thread1Err1ASSERT_VIOLATIONWITNESS_INVARIANT === [thread1Err0ASSERT_VIOLATIONWITNESS_INVARIANT, thread1Err1ASSERT_VIOLATIONWITNESS_INVARIANT, thread1Err3ASSERT_VIOLATIONWITNESS_INVARIANT (and 33 more)] === [2024-02-02 16:07:06,922 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-02 16:07:06,923 INFO L85 PathProgramCache]: Analyzing trace with hash 650498554, now seen corresponding path program 1 times [2024-02-02 16:07:06,923 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-02 16:07:06,923 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [897101500] [2024-02-02 16:07:06,923 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-02 16:07:06,923 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-02 16:07:06,935 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-02 16:07:06,976 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-02 16:07:06,976 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-02 16:07:06,977 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [897101500] [2024-02-02 16:07:06,977 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [897101500] provided 1 perfect and 0 imperfect interpolant sequences [2024-02-02 16:07:06,977 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-02-02 16:07:06,977 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-02-02 16:07:06,977 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [437233206] [2024-02-02 16:07:06,977 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-02 16:07:06,978 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-02-02 16:07:06,978 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-02 16:07:06,978 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-02-02 16:07:06,978 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-02-02 16:07:07,016 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 27 out of 74 [2024-02-02 16:07:07,016 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 55 places, 36 transitions, 117 flow. Second operand has 4 states, 4 states have (on average 31.5) internal successors, (126), 4 states have internal predecessors, (126), 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) [2024-02-02 16:07:07,016 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-02 16:07:07,017 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 27 of 74 [2024-02-02 16:07:07,017 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-02 16:07:07,068 INFO L124 PetriNetUnfolderBase]: 103/269 cut-off events. [2024-02-02 16:07:07,068 INFO L125 PetriNetUnfolderBase]: For 69/78 co-relation queries the response was YES. [2024-02-02 16:07:07,069 INFO L83 FinitePrefix]: Finished finitePrefix Result has 657 conditions, 269 events. 103/269 cut-off events. For 69/78 co-relation queries the response was YES. Maximal size of possible extension queue 17. Compared 1043 event pairs, 31 based on Foata normal form. 8/267 useless extension candidates. Maximal degree in co-relation 484. Up to 110 conditions per place. [2024-02-02 16:07:07,069 INFO L140 encePairwiseOnDemand]: 69/74 looper letters, 24 selfloop transitions, 1 changer transitions 18/51 dead transitions. [2024-02-02 16:07:07,069 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 50 places, 51 transitions, 248 flow [2024-02-02 16:07:07,070 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-02-02 16:07:07,070 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-02-02 16:07:07,070 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 152 transitions. [2024-02-02 16:07:07,071 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5135135135135135 [2024-02-02 16:07:07,071 INFO L175 Difference]: Start difference. First operand has 55 places, 36 transitions, 117 flow. Second operand 4 states and 152 transitions. [2024-02-02 16:07:07,071 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 50 places, 51 transitions, 248 flow [2024-02-02 16:07:07,071 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 48 places, 51 transitions, 228 flow, removed 4 selfloop flow, removed 2 redundant places. [2024-02-02 16:07:07,072 INFO L231 Difference]: Finished difference. Result has 50 places, 30 transitions, 91 flow [2024-02-02 16:07:07,072 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=74, PETRI_DIFFERENCE_MINUEND_FLOW=106, PETRI_DIFFERENCE_MINUEND_PLACES=45, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=36, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=35, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=91, PETRI_PLACES=50, PETRI_TRANSITIONS=30} [2024-02-02 16:07:07,073 INFO L281 CegarLoopForPetriNet]: 72 programPoint places, -22 predicate places. [2024-02-02 16:07:07,073 INFO L495 AbstractCegarLoop]: Abstraction has has 50 places, 30 transitions, 91 flow [2024-02-02 16:07:07,073 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 31.5) internal successors, (126), 4 states have internal predecessors, (126), 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) [2024-02-02 16:07:07,073 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-02-02 16:07:07,073 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-02-02 16:07:07,073 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-02-02 16:07:07,074 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting thread1Err1ASSERT_VIOLATIONWITNESS_INVARIANT === [thread1Err0ASSERT_VIOLATIONWITNESS_INVARIANT, thread1Err1ASSERT_VIOLATIONWITNESS_INVARIANT, thread1Err3ASSERT_VIOLATIONWITNESS_INVARIANT (and 33 more)] === [2024-02-02 16:07:07,074 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-02 16:07:07,074 INFO L85 PathProgramCache]: Analyzing trace with hash 435376112, now seen corresponding path program 2 times [2024-02-02 16:07:07,074 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-02 16:07:07,074 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [297046672] [2024-02-02 16:07:07,074 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-02 16:07:07,075 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-02 16:07:07,085 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-02 16:07:07,119 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-02 16:07:07,119 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-02 16:07:07,119 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [297046672] [2024-02-02 16:07:07,119 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [297046672] provided 1 perfect and 0 imperfect interpolant sequences [2024-02-02 16:07:07,119 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-02-02 16:07:07,120 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-02-02 16:07:07,120 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1468494401] [2024-02-02 16:07:07,120 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-02 16:07:07,120 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-02-02 16:07:07,120 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-02 16:07:07,121 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-02-02 16:07:07,121 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-02-02 16:07:07,161 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 27 out of 74 [2024-02-02 16:07:07,161 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 50 places, 30 transitions, 91 flow. Second operand has 4 states, 4 states have (on average 31.5) internal successors, (126), 4 states have internal predecessors, (126), 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) [2024-02-02 16:07:07,162 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-02 16:07:07,162 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 27 of 74 [2024-02-02 16:07:07,162 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-02 16:07:07,189 INFO L124 PetriNetUnfolderBase]: 43/121 cut-off events. [2024-02-02 16:07:07,190 INFO L125 PetriNetUnfolderBase]: For 65/65 co-relation queries the response was YES. [2024-02-02 16:07:07,190 INFO L83 FinitePrefix]: Finished finitePrefix Result has 289 conditions, 121 events. 43/121 cut-off events. For 65/65 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 309 event pairs, 11 based on Foata normal form. 8/123 useless extension candidates. Maximal degree in co-relation 279. Up to 33 conditions per place. [2024-02-02 16:07:07,190 INFO L140 encePairwiseOnDemand]: 68/74 looper letters, 0 selfloop transitions, 0 changer transitions 33/33 dead transitions. [2024-02-02 16:07:07,190 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 46 places, 33 transitions, 143 flow [2024-02-02 16:07:07,190 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-02-02 16:07:07,191 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-02-02 16:07:07,191 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 135 transitions. [2024-02-02 16:07:07,191 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4560810810810811 [2024-02-02 16:07:07,191 INFO L175 Difference]: Start difference. First operand has 50 places, 30 transitions, 91 flow. Second operand 4 states and 135 transitions. [2024-02-02 16:07:07,191 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 46 places, 33 transitions, 143 flow [2024-02-02 16:07:07,192 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 42 places, 33 transitions, 133 flow, removed 1 selfloop flow, removed 4 redundant places. [2024-02-02 16:07:07,192 INFO L231 Difference]: Finished difference. Result has 42 places, 0 transitions, 0 flow [2024-02-02 16:07:07,192 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=74, PETRI_DIFFERENCE_MINUEND_FLOW=71, PETRI_DIFFERENCE_MINUEND_PLACES=39, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=28, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=28, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=0, PETRI_PLACES=42, PETRI_TRANSITIONS=0} [2024-02-02 16:07:07,193 INFO L281 CegarLoopForPetriNet]: 72 programPoint places, -30 predicate places. [2024-02-02 16:07:07,193 INFO L495 AbstractCegarLoop]: Abstraction has has 42 places, 0 transitions, 0 flow [2024-02-02 16:07:07,193 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 31.5) internal successors, (126), 4 states have internal predecessors, (126), 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) [2024-02-02 16:07:07,195 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err0ASSERT_VIOLATIONWITNESS_INVARIANT (35 of 36 remaining) [2024-02-02 16:07:07,196 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err1ASSERT_VIOLATIONWITNESS_INVARIANT (34 of 36 remaining) [2024-02-02 16:07:07,196 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err3ASSERT_VIOLATIONWITNESS_INVARIANT (33 of 36 remaining) [2024-02-02 16:07:07,196 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err2ASSERT_VIOLATIONWITNESS_INVARIANT (32 of 36 remaining) [2024-02-02 16:07:07,196 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err4ASSERT_VIOLATIONWITNESS_INVARIANT (31 of 36 remaining) [2024-02-02 16:07:07,196 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err5ASSERT_VIOLATIONWITNESS_INVARIANT (30 of 36 remaining) [2024-02-02 16:07:07,197 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err6ASSERT_VIOLATIONWITNESS_INVARIANT (29 of 36 remaining) [2024-02-02 16:07:07,197 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err0ASSERT_VIOLATIONWITNESS_INVARIANT (28 of 36 remaining) [2024-02-02 16:07:07,197 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err1ASSERT_VIOLATIONWITNESS_INVARIANT (27 of 36 remaining) [2024-02-02 16:07:07,197 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err3ASSERT_VIOLATIONWITNESS_INVARIANT (26 of 36 remaining) [2024-02-02 16:07:07,197 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err2ASSERT_VIOLATIONWITNESS_INVARIANT (25 of 36 remaining) [2024-02-02 16:07:07,197 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err4ASSERT_VIOLATIONWITNESS_INVARIANT (24 of 36 remaining) [2024-02-02 16:07:07,197 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err5ASSERT_VIOLATIONWITNESS_INVARIANT (23 of 36 remaining) [2024-02-02 16:07:07,197 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err6ASSERT_VIOLATIONWITNESS_INVARIANT (22 of 36 remaining) [2024-02-02 16:07:07,198 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT (21 of 36 remaining) [2024-02-02 16:07:07,198 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (20 of 36 remaining) [2024-02-02 16:07:07,198 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (19 of 36 remaining) [2024-02-02 16:07:07,198 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr3ASSERT_VIOLATIONWITNESS_INVARIANT (18 of 36 remaining) [2024-02-02 16:07:07,198 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr4ASSERT_VIOLATIONWITNESS_INVARIANT (17 of 36 remaining) [2024-02-02 16:07:07,198 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION (16 of 36 remaining) [2024-02-02 16:07:07,198 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (15 of 36 remaining) [2024-02-02 16:07:07,198 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (14 of 36 remaining) [2024-02-02 16:07:07,199 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err0ASSERT_VIOLATIONWITNESS_INVARIANT (13 of 36 remaining) [2024-02-02 16:07:07,199 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err1ASSERT_VIOLATIONWITNESS_INVARIANT (12 of 36 remaining) [2024-02-02 16:07:07,199 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err3ASSERT_VIOLATIONWITNESS_INVARIANT (11 of 36 remaining) [2024-02-02 16:07:07,199 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err2ASSERT_VIOLATIONWITNESS_INVARIANT (10 of 36 remaining) [2024-02-02 16:07:07,199 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err4ASSERT_VIOLATIONWITNESS_INVARIANT (9 of 36 remaining) [2024-02-02 16:07:07,199 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err5ASSERT_VIOLATIONWITNESS_INVARIANT (8 of 36 remaining) [2024-02-02 16:07:07,199 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err6ASSERT_VIOLATIONWITNESS_INVARIANT (7 of 36 remaining) [2024-02-02 16:07:07,199 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err0ASSERT_VIOLATIONWITNESS_INVARIANT (6 of 36 remaining) [2024-02-02 16:07:07,200 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err1ASSERT_VIOLATIONWITNESS_INVARIANT (5 of 36 remaining) [2024-02-02 16:07:07,200 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err3ASSERT_VIOLATIONWITNESS_INVARIANT (4 of 36 remaining) [2024-02-02 16:07:07,200 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err2ASSERT_VIOLATIONWITNESS_INVARIANT (3 of 36 remaining) [2024-02-02 16:07:07,200 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err4ASSERT_VIOLATIONWITNESS_INVARIANT (2 of 36 remaining) [2024-02-02 16:07:07,200 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err5ASSERT_VIOLATIONWITNESS_INVARIANT (1 of 36 remaining) [2024-02-02 16:07:07,200 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err6ASSERT_VIOLATIONWITNESS_INVARIANT (0 of 36 remaining) [2024-02-02 16:07:07,200 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-02-02 16:07:07,201 INFO L445 BasicCegarLoop]: Path program histogram: [2, 1, 1, 1, 1, 1, 1, 1, 1] [2024-02-02 16:07:07,205 INFO L229 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2024-02-02 16:07:07,205 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2024-02-02 16:07:07,208 INFO L503 ceAbstractionStarter]: Automizer considered 19 witness invariants [2024-02-02 16:07:07,208 INFO L504 ceAbstractionStarter]: WitnessConsidered=19 [2024-02-02 16:07:07,209 INFO L201 PluginConnector]: Adding new model witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 02.02 04:07:07 BasicIcfg [2024-02-02 16:07:07,209 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2024-02-02 16:07:07,209 INFO L158 Benchmark]: Toolchain (without parser) took 3920.32ms. Allocated memory was 155.2MB in the beginning and 209.7MB in the end (delta: 54.5MB). Free memory was 95.8MB in the beginning and 94.0MB in the end (delta: 1.8MB). Peak memory consumption was 59.5MB. Max. memory is 16.1GB. [2024-02-02 16:07:07,210 INFO L158 Benchmark]: CDTParser took 0.17ms. Allocated memory is still 155.2MB. Free memory is still 122.3MB. There was no memory consumed. Max. memory is 16.1GB. [2024-02-02 16:07:07,210 INFO L158 Benchmark]: Witness Parser took 4.25ms. Allocated memory is still 155.2MB. Free memory was 99.4MB in the beginning and 98.8MB in the end (delta: 595.5kB). There was no memory consumed. Max. memory is 16.1GB. [2024-02-02 16:07:07,210 INFO L158 Benchmark]: CACSL2BoogieTranslator took 596.53ms. Allocated memory is still 155.2MB. Free memory was 95.8MB in the beginning and 56.9MB in the end (delta: 38.9MB). Peak memory consumption was 39.8MB. Max. memory is 16.1GB. [2024-02-02 16:07:07,210 INFO L158 Benchmark]: Boogie Procedure Inliner took 59.91ms. Allocated memory is still 155.2MB. Free memory was 56.9MB in the beginning and 54.8MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2024-02-02 16:07:07,211 INFO L158 Benchmark]: Boogie Preprocessor took 72.23ms. Allocated memory is still 155.2MB. Free memory was 54.8MB in the beginning and 52.1MB in the end (delta: 2.7MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2024-02-02 16:07:07,211 INFO L158 Benchmark]: RCFGBuilder took 524.82ms. Allocated memory is still 155.2MB. Free memory was 52.1MB in the beginning and 90.5MB in the end (delta: -38.4MB). Peak memory consumption was 18.5MB. Max. memory is 16.1GB. [2024-02-02 16:07:07,211 INFO L158 Benchmark]: TraceAbstraction took 2661.68ms. Allocated memory was 155.2MB in the beginning and 209.7MB in the end (delta: 54.5MB). Free memory was 89.9MB in the beginning and 94.0MB in the end (delta: -4.1MB). Peak memory consumption was 51.5MB. Max. memory is 16.1GB. [2024-02-02 16:07:07,212 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.17ms. Allocated memory is still 155.2MB. Free memory is still 122.3MB. There was no memory consumed. Max. memory is 16.1GB. * Witness Parser took 4.25ms. Allocated memory is still 155.2MB. Free memory was 99.4MB in the beginning and 98.8MB in the end (delta: 595.5kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 596.53ms. Allocated memory is still 155.2MB. Free memory was 95.8MB in the beginning and 56.9MB in the end (delta: 38.9MB). Peak memory consumption was 39.8MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 59.91ms. Allocated memory is still 155.2MB. Free memory was 56.9MB in the beginning and 54.8MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 72.23ms. Allocated memory is still 155.2MB. Free memory was 54.8MB in the beginning and 52.1MB in the end (delta: 2.7MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 524.82ms. Allocated memory is still 155.2MB. Free memory was 52.1MB in the beginning and 90.5MB in the end (delta: -38.4MB). Peak memory consumption was 18.5MB. Max. memory is 16.1GB. * TraceAbstraction took 2661.68ms. Allocated memory was 155.2MB in the beginning and 209.7MB in the end (delta: 54.5MB). Free memory was 89.9MB in the beginning and 94.0MB in the end (delta: -4.1MB). Peak memory consumption was 51.5MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 935]: invariant of correctness witness holds For all program executions holds that invariant of correctness witness holds at this location - PositiveResult [Line: 936]: invariant of correctness witness holds For all program executions holds that invariant of correctness witness holds at this location - PositiveResult [Line: 938]: invariant of correctness witness holds For all program executions holds that invariant of correctness witness holds at this location - PositiveResult [Line: 937]: invariant of correctness witness holds For all program executions holds that invariant of correctness witness holds at this location - PositiveResult [Line: 939]: invariant of correctness witness holds For all program executions holds that invariant of correctness witness holds at this location - PositiveResult [Line: 940]: invariant of correctness witness holds For all program executions holds that invariant of correctness witness holds at this location - PositiveResult [Line: 941]: invariant of correctness witness holds For all program executions holds that invariant of correctness witness holds at this location - PositiveResult [Line: 945]: invariant of correctness witness holds For all program executions holds that invariant of correctness witness holds at this location - PositiveResult [Line: 946]: invariant of correctness witness holds For all program executions holds that invariant of correctness witness holds at this location - PositiveResult [Line: 948]: invariant of correctness witness holds For all program executions holds that invariant of correctness witness holds at this location - PositiveResult [Line: 947]: invariant of correctness witness holds For all program executions holds that invariant of correctness witness holds at this location - PositiveResult [Line: 949]: invariant of correctness witness holds For all program executions holds that invariant of correctness witness holds at this location - PositiveResult [Line: 950]: invariant of correctness witness holds For all program executions holds that invariant of correctness witness holds at this location - PositiveResult [Line: 951]: invariant of correctness witness holds For all program executions holds that invariant of correctness witness holds at this location - PositiveResult [Line: 956]: invariant of correctness witness holds For all program executions holds that invariant of correctness witness holds at this location - PositiveResult [Line: 957]: invariant of correctness witness holds For all program executions holds that invariant of correctness witness holds at this location - PositiveResult [Line: 958]: invariant of correctness witness holds For all program executions holds that invariant of correctness witness holds at this location - PositiveResult [Line: 959]: invariant of correctness witness holds For all program executions holds that invariant of correctness witness holds at this location - PositiveResult [Line: 960]: invariant of correctness witness holds For all program executions holds that invariant of correctness witness holds at this location - PositiveResult [Line: 966]: a call to reach_error is unreachable For all program executions holds that a call to reach_error is unreachable at this location - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 5 procedures, 118 locations, 36 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: 2.5s, OverallIterations: 10, TraceHistogramMax: 1, PathProgramHistogramMax: 2, EmptinessCheckTime: 0.0s, AutomataDifference: 1.4s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 856 SdHoareTripleChecker+Valid, 0.8s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 501 mSDsluCounter, 131 SdHoareTripleChecker+Invalid, 0.6s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 50 mSDsCounter, 144 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 946 IncrementalHoareTripleChecker+Invalid, 1090 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 144 mSolverCounterUnsat, 81 mSDtfsCounter, 946 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 30 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=188occurred in iteration=1, InterpolantAutomatonStates: 38, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.7s InterpolantComputationTime, 135 NumberOfCodeBlocks, 135 NumberOfCodeBlocksAsserted, 10 NumberOfCheckSat, 125 ConstructedInterpolants, 0 QuantifiedInterpolants, 563 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 10 InterpolantComputations, 10 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 20 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2024-02-02 16:07:07,247 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Ended with exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: TRUE