./Ultimate.py --spec ../../../trunk/examples/svcomp/properties/unreach-call.prp --file ../../../trunk/examples/svcomp/goblint-regression/36-apron_22-traces-write-centered-vs-meet-mutex_true_no-overflow.i --full-output --witness-type correctness_witness --witnessparser.only.consider.loop.invariants false --validate ./goblint.2024-02-07_10-47-16.files/SV-COMP24_unreach-call/36-apron_22-traces-write-centered-vs-meet-mutex_true_no-overflow.yml/witness.yml --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version e7c74aec 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/goblint-regression/36-apron_22-traces-write-centered-vs-meet-mutex_true_no-overflow.i ./goblint.2024-02-07_10-47-16.files/SV-COMP24_unreach-call/36-apron_22-traces-write-centered-vs-meet-mutex_true_no-overflow.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.fix-undeclared-acsl-variable-e7c74ae-m [2024-02-07 19:08:01,175 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-02-07 19:08:01,300 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-02-07 19:08:01,306 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-02-07 19:08:01,306 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-02-07 19:08:01,340 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-02-07 19:08:01,341 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-02-07 19:08:01,341 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-02-07 19:08:01,342 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-02-07 19:08:01,343 INFO L153 SettingsManager]: * Use memory slicer=true [2024-02-07 19:08:01,343 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-02-07 19:08:01,344 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-02-07 19:08:01,345 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-02-07 19:08:01,348 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-02-07 19:08:01,349 INFO L153 SettingsManager]: * Use SBE=true [2024-02-07 19:08:01,350 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-02-07 19:08:01,350 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-02-07 19:08:01,350 INFO L153 SettingsManager]: * sizeof long=4 [2024-02-07 19:08:01,351 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-02-07 19:08:01,351 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-02-07 19:08:01,351 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-02-07 19:08:01,351 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-02-07 19:08:01,352 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-02-07 19:08:01,352 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-02-07 19:08:01,352 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-02-07 19:08:01,353 INFO L153 SettingsManager]: * sizeof long double=12 [2024-02-07 19:08:01,353 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-02-07 19:08:01,353 INFO L153 SettingsManager]: * Use constant arrays=true [2024-02-07 19:08:01,354 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-02-07 19:08:01,354 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-02-07 19:08:01,355 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-02-07 19:08:01,355 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-02-07 19:08:01,355 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-02-07 19:08:01,356 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-02-07 19:08:01,356 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-02-07 19:08:01,356 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-02-07 19:08:01,356 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-02-07 19:08:01,357 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-02-07 19:08:01,357 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-02-07 19:08:01,357 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-02-07 19:08:01,357 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2024-02-07 19:08:01,358 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-02-07 19:08:01,358 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-02-07 19:08:01,358 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessparser: Only consider loop invariants -> false [2024-02-07 19:08:01,637 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-02-07 19:08:01,672 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-02-07 19:08:01,677 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-02-07 19:08:01,678 INFO L270 PluginConnector]: Initializing Witness Parser... [2024-02-07 19:08:01,679 INFO L274 PluginConnector]: Witness Parser initialized [2024-02-07 19:08:01,681 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/./goblint.2024-02-07_10-47-16.files/SV-COMP24_unreach-call/36-apron_22-traces-write-centered-vs-meet-mutex_true_no-overflow.yml/witness.yml [2024-02-07 19:08:01,842 INFO L270 PluginConnector]: Initializing CDTParser... [2024-02-07 19:08:01,843 INFO L274 PluginConnector]: CDTParser initialized [2024-02-07 19:08:01,843 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/goblint-regression/36-apron_22-traces-write-centered-vs-meet-mutex_true_no-overflow.i [2024-02-07 19:08:03,334 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-02-07 19:08:03,627 INFO L384 CDTParser]: Found 1 translation units. [2024-02-07 19:08:03,627 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/goblint-regression/36-apron_22-traces-write-centered-vs-meet-mutex_true_no-overflow.i [2024-02-07 19:08:03,649 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d9f96d1f8/a7b34cace2d54691a96fe8a013662a8d/FLAGe700ac90c [2024-02-07 19:08:03,668 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d9f96d1f8/a7b34cace2d54691a96fe8a013662a8d [2024-02-07 19:08:03,669 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-02-07 19:08:03,670 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2024-02-07 19:08:03,672 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-02-07 19:08:03,672 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-02-07 19:08:03,677 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-02-07 19:08:03,678 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 07.02 07:08:01" (1/2) ... [2024-02-07 19:08:03,680 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1e29c4ec and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 07.02 07:08:03, skipping insertion in model container [2024-02-07 19:08:03,680 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 07.02 07:08:01" (1/2) ... [2024-02-07 19:08:03,682 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@411abc24 and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 07.02 07:08:03, skipping insertion in model container [2024-02-07 19:08:03,682 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.02 07:08:03" (2/2) ... [2024-02-07 19:08:03,683 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1e29c4ec and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.02 07:08:03, skipping insertion in model container [2024-02-07 19:08:03,683 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.02 07:08:03" (2/2) ... [2024-02-07 19:08:03,683 INFO L83 nessWitnessExtractor]: Extracting all invariants from correctness witness [2024-02-07 19:08:03,781 INFO L74 edCorrectnessWitness]: Found the following entries in the witness: [2024-02-07 19:08:03,783 INFO L76 edCorrectnessWitness]: Location invariant before [L722-L722] -999 <= x [2024-02-07 19:08:03,783 INFO L76 edCorrectnessWitness]: Location invariant before [L754-L754] (-999 <= a) && (((((1016LL + (long long )a) + (long long )b >= 0LL && (982LL + (long long )a) - (long long )b >= 0LL) && -17 == b) && b == -17) || (31 == b && b == 31)) [2024-02-07 19:08:03,783 INFO L76 edCorrectnessWitness]: Location invariant before [L710-L710] ((((((((((((4294967296LL + (long long )x) + (long long )y >= 0LL) && ((4294967296LL + (long long )x) + (long long )z >= 0LL)) && ((4294967296LL + (long long )y) + (long long )z >= 0LL)) && ((4294967295LL - (long long )x) + (long long )y >= 0LL)) && ((4294967295LL - (long long )x) + (long long )z >= 0LL)) && ((4294967295LL - (long long )y) + (long long )z >= 0LL)) && ((4294967295LL + (long long )x) - (long long )y >= 0LL)) && ((4294967295LL + (long long )x) - (long long )z >= 0LL)) && ((4294967295LL + (long long )y) - (long long )z >= 0LL)) && ((4294967294LL - (long long )x) - (long long )y >= 0LL)) && ((4294967294LL - (long long )x) - (long long )z >= 0LL)) && ((4294967294LL - (long long )y) - (long long )z >= 0LL) [2024-02-07 19:08:03,783 INFO L76 edCorrectnessWitness]: Location invariant before [L747-L747] (-999 <= x) && (-968 <= i) [2024-02-07 19:08:03,783 INFO L76 edCorrectnessWitness]: Location invariant before [L753-L753] ((-999 <= a) && (31 == b)) && (b == 31) [2024-02-07 19:08:03,784 INFO L76 edCorrectnessWitness]: Location invariant before [L718-L718] (-1016 <= y) && (-999 <= x) [2024-02-07 19:08:03,784 INFO L76 edCorrectnessWitness]: Location invariant before [L716-L716] -999 <= g [2024-02-07 19:08:03,784 INFO L76 edCorrectnessWitness]: Location invariant before [L717-L717] (-1016 <= h) && (-999 <= x) [2024-02-07 19:08:03,784 INFO L76 edCorrectnessWitness]: Location invariant before [L738-L738] (-999 <= x) && (-968 <= i) [2024-02-07 19:08:03,784 INFO L76 edCorrectnessWitness]: Location invariant before [L752-L752] ((((-999 <= a) && ((1016LL + (long long )a) + (long long )b >= 0LL)) && ((982LL + (long long )a) - (long long )b >= 0LL)) && (-17 == b)) && (b == -17) [2024-02-07 19:08:03,784 INFO L76 edCorrectnessWitness]: Location invariant after [L711-L711] ((((4294967296LL + (long long )y) + (long long )z >= 0LL) && ((4294967295LL - (long long )y) + (long long )z >= 0LL)) && ((4294967295LL + (long long )y) - (long long )z >= 0LL)) && ((4294967294LL - (long long )y) - (long long )z >= 0LL) [2024-02-07 19:08:03,785 INFO L76 edCorrectnessWitness]: Location invariant before [L724-L724] (-999 <= x) && (-968 <= z) [2024-02-07 19:08:03,785 INFO L76 edCorrectnessWitness]: Location invariant before [L711-L711] ((((4294967296LL + (long long )y) + (long long )z >= 0LL) && ((4294967295LL - (long long )y) + (long long )z >= 0LL)) && ((4294967295LL + (long long )y) - (long long )z >= 0LL)) && ((4294967294LL - (long long )y) - (long long )z >= 0LL) [2024-02-07 19:08:03,785 INFO L76 edCorrectnessWitness]: Location invariant after [L710-L710] ((((((((((((4294967296LL + (long long )x) + (long long )y >= 0LL) && ((4294967296LL + (long long )x) + (long long )z >= 0LL)) && ((4294967296LL + (long long )y) + (long long )z >= 0LL)) && ((4294967295LL - (long long )x) + (long long )y >= 0LL)) && ((4294967295LL - (long long )x) + (long long )z >= 0LL)) && ((4294967295LL - (long long )y) + (long long )z >= 0LL)) && ((4294967295LL + (long long )x) - (long long )y >= 0LL)) && ((4294967295LL + (long long )x) - (long long )z >= 0LL)) && ((4294967295LL + (long long )y) - (long long )z >= 0LL)) && ((4294967294LL - (long long )x) - (long long )y >= 0LL)) && ((4294967294LL - (long long )x) - (long long )z >= 0LL)) && ((4294967294LL - (long long )y) - (long long )z >= 0LL) [2024-02-07 19:08:03,785 INFO L76 edCorrectnessWitness]: Location invariant before [L742-L742] -999 <= x [2024-02-07 19:08:03,785 INFO L76 edCorrectnessWitness]: Location invariant before [L740-L740] (-1016 <= h) && (h <= 2147483630) [2024-02-07 19:08:03,786 INFO L76 edCorrectnessWitness]: Location invariant before [L739-L739] (-999 <= g) && (-999 <= x) [2024-02-07 19:08:03,786 INFO L76 edCorrectnessWitness]: Location invariant before [L723-L723] -968 <= i [2024-02-07 19:08:03,786 INFO L76 edCorrectnessWitness]: Location invariant before [L720-L720] (-1016 <= y) && (-999 <= x) [2024-02-07 19:08:03,786 INFO L76 edCorrectnessWitness]: Location invariant before [L743-L743] -999 <= h [2024-02-07 19:08:03,786 INFO L76 edCorrectnessWitness]: Location invariant before [L726-L726] -999 <= x [2024-02-07 19:08:03,840 INFO L181 MainTranslator]: Built tables and reachable declarations [2024-02-07 19:08:04,048 WARN L239 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/goblint-regression/36-apron_22-traces-write-centered-vs-meet-mutex_true_no-overflow.i[1120,1133] [2024-02-07 19:08:04,251 INFO L207 PostProcessor]: Analyzing one entry point: main [2024-02-07 19:08:04,268 INFO L206 MainTranslator]: Completed pre-run [2024-02-07 19:08:04,284 WARN L239 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/goblint-regression/36-apron_22-traces-write-centered-vs-meet-mutex_true_no-overflow.i[1120,1133] [2024-02-07 19:08:04,320 WARN L423 MainDispatcher]: Unable to annotate int with a witness entry [2024-02-07 19:08:04,321 WARN L423 MainDispatcher]: Unable to annotate x = __VERIFIER_nondet_int() with a witness entry [2024-02-07 19:08:04,321 WARN L423 MainDispatcher]: Unable to annotate int with a witness entry [2024-02-07 19:08:04,321 WARN L423 MainDispatcher]: Unable to annotate y = __VERIFIER_nondet_int() with a witness entry 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 [2024-02-07 19:08:04,374 INFO L207 PostProcessor]: Analyzing one entry point: main [2024-02-07 19:08:04,414 INFO L211 MainTranslator]: Completed translation [2024-02-07 19:08:04,415 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.02 07:08:04 WrapperNode [2024-02-07 19:08:04,419 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-02-07 19:08:04,421 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-02-07 19:08:04,421 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-02-07 19:08:04,421 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-02-07 19:08:04,429 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.02 07:08:04" (1/1) ... [2024-02-07 19:08:04,443 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.02 07:08:04" (1/1) ... [2024-02-07 19:08:04,468 INFO L138 Inliner]: procedures = 166, calls = 49, calls flagged for inlining = 9, calls inlined = 11, statements flattened = 184 [2024-02-07 19:08:04,469 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-02-07 19:08:04,470 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-02-07 19:08:04,470 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-02-07 19:08:04,470 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-02-07 19:08:04,481 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.02 07:08:04" (1/1) ... [2024-02-07 19:08:04,482 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.02 07:08:04" (1/1) ... [2024-02-07 19:08:04,486 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.02 07:08:04" (1/1) ... [2024-02-07 19:08:04,512 INFO L175 MemorySlicer]: Split 18 memory accesses to 5 slices as follows [2, 1, 5, 5, 5]. 28 percent of accesses are in the largest equivalence class. The 17 initializations are split as follows [2, 0, 5, 5, 5]. The 1 writes are split as follows [0, 1, 0, 0, 0]. [2024-02-07 19:08:04,512 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.02 07:08:04" (1/1) ... [2024-02-07 19:08:04,512 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.02 07:08:04" (1/1) ... [2024-02-07 19:08:04,525 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.02 07:08:04" (1/1) ... [2024-02-07 19:08:04,527 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.02 07:08:04" (1/1) ... [2024-02-07 19:08:04,532 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.02 07:08:04" (1/1) ... [2024-02-07 19:08:04,534 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.02 07:08:04" (1/1) ... [2024-02-07 19:08:04,538 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-02-07 19:08:04,539 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-02-07 19:08:04,539 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-02-07 19:08:04,539 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-02-07 19:08:04,540 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.02 07:08:04" (1/1) ... [2024-02-07 19:08:04,546 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-02-07 19:08:04,554 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-02-07 19:08:04,571 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) [2024-02-07 19:08:04,573 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 [2024-02-07 19:08:04,606 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-02-07 19:08:04,606 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2024-02-07 19:08:04,606 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#2 [2024-02-07 19:08:04,606 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#3 [2024-02-07 19:08:04,607 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#4 [2024-02-07 19:08:04,607 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2024-02-07 19:08:04,607 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-02-07 19:08:04,607 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2024-02-07 19:08:04,607 INFO L130 BoogieDeclarations]: Found specification of procedure t_fun [2024-02-07 19:08:04,607 INFO L138 BoogieDeclarations]: Found implementation of procedure t_fun [2024-02-07 19:08:04,608 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2024-02-07 19:08:04,608 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-02-07 19:08:04,608 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-02-07 19:08:04,608 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2024-02-07 19:08:04,608 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#3 [2024-02-07 19:08:04,608 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#4 [2024-02-07 19:08:04,609 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexUnlock [2024-02-07 19:08:04,609 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-02-07 19:08:04,609 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-02-07 19:08:04,610 WARN L214 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2024-02-07 19:08:04,745 INFO L244 CfgBuilder]: Building ICFG [2024-02-07 19:08:04,747 INFO L270 CfgBuilder]: Building CFG for each procedure with an implementation [2024-02-07 19:08:05,040 INFO L289 CfgBuilder]: Ommited future-live optimization because the input is a concurrent program. [2024-02-07 19:08:05,041 INFO L293 CfgBuilder]: Performing block encoding [2024-02-07 19:08:05,211 INFO L315 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-02-07 19:08:05,211 INFO L320 CfgBuilder]: Removed 0 assume(true) statements. [2024-02-07 19:08:05,212 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.02 07:08:05 BoogieIcfgContainer [2024-02-07 19:08:05,212 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-02-07 19:08:05,214 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-02-07 19:08:05,214 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-02-07 19:08:05,217 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-02-07 19:08:05,217 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 07.02 07:08:01" (1/4) ... [2024-02-07 19:08:05,218 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@792abe37 and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CORRECTNESS_WITNESS 07.02 07:08:05, skipping insertion in model container [2024-02-07 19:08:05,218 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 07.02 07:08:03" (2/4) ... [2024-02-07 19:08:05,218 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@792abe37 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.02 07:08:05, skipping insertion in model container [2024-02-07 19:08:05,219 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.02 07:08:04" (3/4) ... [2024-02-07 19:08:05,219 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@792abe37 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.02 07:08:05, skipping insertion in model container [2024-02-07 19:08:05,219 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.02 07:08:05" (4/4) ... [2024-02-07 19:08:05,220 INFO L112 eAbstractionObserver]: Analyzing ICFG 36-apron_22-traces-write-centered-vs-meet-mutex_true_no-overflow.i [2024-02-07 19:08:05,238 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-02-07 19:08:05,239 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 23 error locations. [2024-02-07 19:08:05,239 INFO L518 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-02-07 19:08:05,287 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2024-02-07 19:08:05,318 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 93 places, 94 transitions, 192 flow [2024-02-07 19:08:05,352 INFO L124 PetriNetUnfolderBase]: 4/94 cut-off events. [2024-02-07 19:08:05,352 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-02-07 19:08:05,355 INFO L83 FinitePrefix]: Finished finitePrefix Result has 98 conditions, 94 events. 4/94 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 161 event pairs, 0 based on Foata normal form. 0/66 useless extension candidates. Maximal degree in co-relation 89. Up to 2 conditions per place. [2024-02-07 19:08:05,356 INFO L82 GeneralOperation]: Start removeDead. Operand has 93 places, 94 transitions, 192 flow [2024-02-07 19:08:05,359 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 92 places, 92 transitions, 187 flow [2024-02-07 19:08:05,368 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-02-07 19:08:05,374 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;@f2dd0f6, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-02-07 19:08:05,375 INFO L358 AbstractCegarLoop]: Starting to check reachability of 38 error locations. [2024-02-07 19:08:05,412 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-02-07 19:08:05,414 INFO L124 PetriNetUnfolderBase]: 0/16 cut-off events. [2024-02-07 19:08:05,414 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-02-07 19:08:05,415 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-02-07 19:08:05,415 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-02-07 19:08:05,416 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 35 more)] === [2024-02-07 19:08:05,440 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-07 19:08:05,441 INFO L85 PathProgramCache]: Analyzing trace with hash 686152796, now seen corresponding path program 1 times [2024-02-07 19:08:05,449 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-07 19:08:05,450 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [290775654] [2024-02-07 19:08:05,450 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-07 19:08:05,450 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-07 19:08:05,754 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-07 19:08:06,075 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-07 19:08:06,076 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-07 19:08:06,077 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [290775654] [2024-02-07 19:08:06,078 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [290775654] provided 1 perfect and 0 imperfect interpolant sequences [2024-02-07 19:08:06,078 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-02-07 19:08:06,078 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-02-07 19:08:06,080 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1369164418] [2024-02-07 19:08:06,080 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-07 19:08:06,097 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-02-07 19:08:06,103 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-07 19:08:06,163 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-02-07 19:08:06,163 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-02-07 19:08:06,175 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 42 out of 94 [2024-02-07 19:08:06,178 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 92 places, 92 transitions, 187 flow. Second operand has 4 states, 4 states have (on average 44.0) internal successors, (176), 4 states have internal predecessors, (176), 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) [2024-02-07 19:08:06,178 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-07 19:08:06,178 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 42 of 94 [2024-02-07 19:08:06,179 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-07 19:08:06,442 INFO L124 PetriNetUnfolderBase]: 563/1684 cut-off events. [2024-02-07 19:08:06,442 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-02-07 19:08:06,447 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2863 conditions, 1684 events. 563/1684 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 48. Compared 11305 event pairs, 183 based on Foata normal form. 77/1603 useless extension candidates. Maximal degree in co-relation 2852. Up to 599 conditions per place. [2024-02-07 19:08:06,454 INFO L140 encePairwiseOnDemand]: 83/94 looper letters, 95 selfloop transitions, 5 changer transitions 2/143 dead transitions. [2024-02-07 19:08:06,455 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 94 places, 143 transitions, 493 flow [2024-02-07 19:08:06,456 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-02-07 19:08:06,458 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-02-07 19:08:06,463 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 283 transitions. [2024-02-07 19:08:06,465 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.7526595744680851 [2024-02-07 19:08:06,466 INFO L175 Difference]: Start difference. First operand has 92 places, 92 transitions, 187 flow. Second operand 4 states and 283 transitions. [2024-02-07 19:08:06,467 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 94 places, 143 transitions, 493 flow [2024-02-07 19:08:06,470 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 93 places, 143 transitions, 492 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-02-07 19:08:06,472 INFO L231 Difference]: Finished difference. Result has 94 places, 90 transitions, 203 flow [2024-02-07 19:08:06,474 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=94, PETRI_DIFFERENCE_MINUEND_FLOW=178, PETRI_DIFFERENCE_MINUEND_PLACES=90, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=88, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=83, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=203, PETRI_PLACES=94, PETRI_TRANSITIONS=90} [2024-02-07 19:08:06,476 INFO L281 CegarLoopForPetriNet]: 92 programPoint places, 2 predicate places. [2024-02-07 19:08:06,476 INFO L495 AbstractCegarLoop]: Abstraction has has 94 places, 90 transitions, 203 flow [2024-02-07 19:08:06,477 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 44.0) internal successors, (176), 4 states have internal predecessors, (176), 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) [2024-02-07 19:08:06,477 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-02-07 19:08:06,477 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-02-07 19:08:06,477 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-02-07 19:08:06,477 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting t_funErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 35 more)] === [2024-02-07 19:08:06,478 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-07 19:08:06,478 INFO L85 PathProgramCache]: Analyzing trace with hash 1295463975, now seen corresponding path program 1 times [2024-02-07 19:08:06,478 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-07 19:08:06,478 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1891132274] [2024-02-07 19:08:06,479 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-07 19:08:06,479 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-07 19:08:06,491 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-07 19:08:06,524 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-07 19:08:06,524 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-07 19:08:06,524 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1891132274] [2024-02-07 19:08:06,525 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1891132274] provided 1 perfect and 0 imperfect interpolant sequences [2024-02-07 19:08:06,525 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-02-07 19:08:06,525 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-02-07 19:08:06,525 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1748953585] [2024-02-07 19:08:06,525 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-07 19:08:06,526 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-02-07 19:08:06,527 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-07 19:08:06,527 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-02-07 19:08:06,527 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-02-07 19:08:06,530 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 47 out of 94 [2024-02-07 19:08:06,530 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 94 places, 90 transitions, 203 flow. Second operand has 3 states, 3 states have (on average 49.333333333333336) internal successors, (148), 3 states have internal predecessors, (148), 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) [2024-02-07 19:08:06,530 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-07 19:08:06,530 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 47 of 94 [2024-02-07 19:08:06,530 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-07 19:08:06,716 INFO L124 PetriNetUnfolderBase]: 508/1603 cut-off events. [2024-02-07 19:08:06,717 INFO L125 PetriNetUnfolderBase]: For 70/70 co-relation queries the response was YES. [2024-02-07 19:08:06,720 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2812 conditions, 1603 events. 508/1603 cut-off events. For 70/70 co-relation queries the response was YES. Maximal size of possible extension queue 51. Compared 10862 event pairs, 99 based on Foata normal form. 0/1475 useless extension candidates. Maximal degree in co-relation 2799. Up to 853 conditions per place. [2024-02-07 19:08:06,726 INFO L140 encePairwiseOnDemand]: 91/94 looper letters, 66 selfloop transitions, 2 changer transitions 0/112 dead transitions. [2024-02-07 19:08:06,726 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 96 places, 112 transitions, 388 flow [2024-02-07 19:08:06,726 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-02-07 19:08:06,727 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-02-07 19:08:06,729 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 207 transitions. [2024-02-07 19:08:06,730 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.7340425531914894 [2024-02-07 19:08:06,731 INFO L175 Difference]: Start difference. First operand has 94 places, 90 transitions, 203 flow. Second operand 3 states and 207 transitions. [2024-02-07 19:08:06,731 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 96 places, 112 transitions, 388 flow [2024-02-07 19:08:06,735 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 94 places, 112 transitions, 380 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-02-07 19:08:06,737 INFO L231 Difference]: Finished difference. Result has 95 places, 90 transitions, 204 flow [2024-02-07 19:08:06,737 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=94, PETRI_DIFFERENCE_MINUEND_FLOW=196, PETRI_DIFFERENCE_MINUEND_PLACES=92, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=90, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=88, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=204, PETRI_PLACES=95, PETRI_TRANSITIONS=90} [2024-02-07 19:08:06,738 INFO L281 CegarLoopForPetriNet]: 92 programPoint places, 3 predicate places. [2024-02-07 19:08:06,738 INFO L495 AbstractCegarLoop]: Abstraction has has 95 places, 90 transitions, 204 flow [2024-02-07 19:08:06,738 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 49.333333333333336) internal successors, (148), 3 states have internal predecessors, (148), 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) [2024-02-07 19:08:06,738 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-02-07 19:08:06,739 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-02-07 19:08:06,739 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-02-07 19:08:06,739 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 35 more)] === [2024-02-07 19:08:06,740 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-07 19:08:06,740 INFO L85 PathProgramCache]: Analyzing trace with hash -204099306, now seen corresponding path program 1 times [2024-02-07 19:08:06,740 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-07 19:08:06,741 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1965738296] [2024-02-07 19:08:06,741 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-07 19:08:06,741 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-07 19:08:06,760 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-07 19:08:06,824 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-07 19:08:06,825 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-07 19:08:06,825 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1965738296] [2024-02-07 19:08:06,825 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1965738296] provided 1 perfect and 0 imperfect interpolant sequences [2024-02-07 19:08:06,825 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-02-07 19:08:06,826 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-02-07 19:08:06,826 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [379215593] [2024-02-07 19:08:06,826 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-07 19:08:06,827 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-02-07 19:08:06,827 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-07 19:08:06,828 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-02-07 19:08:06,828 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-02-07 19:08:06,841 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 43 out of 94 [2024-02-07 19:08:06,842 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 95 places, 90 transitions, 204 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) [2024-02-07 19:08:06,842 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-07 19:08:06,842 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 43 of 94 [2024-02-07 19:08:06,842 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-07 19:08:07,056 INFO L124 PetriNetUnfolderBase]: 516/1565 cut-off events. [2024-02-07 19:08:07,056 INFO L125 PetriNetUnfolderBase]: For 68/68 co-relation queries the response was YES. [2024-02-07 19:08:07,058 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2793 conditions, 1565 events. 516/1565 cut-off events. For 68/68 co-relation queries the response was YES. Maximal size of possible extension queue 46. Compared 10341 event pairs, 85 based on Foata normal form. 15/1490 useless extension candidates. Maximal degree in co-relation 2779. Up to 823 conditions per place. [2024-02-07 19:08:07,063 INFO L140 encePairwiseOnDemand]: 89/94 looper letters, 85 selfloop transitions, 3 changer transitions 2/132 dead transitions. [2024-02-07 19:08:07,063 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 97 places, 132 transitions, 474 flow [2024-02-07 19:08:07,064 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-02-07 19:08:07,064 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-02-07 19:08:07,065 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 261 transitions. [2024-02-07 19:08:07,065 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6941489361702128 [2024-02-07 19:08:07,065 INFO L175 Difference]: Start difference. First operand has 95 places, 90 transitions, 204 flow. Second operand 4 states and 261 transitions. [2024-02-07 19:08:07,065 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 97 places, 132 transitions, 474 flow [2024-02-07 19:08:07,067 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 95 places, 132 transitions, 470 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-02-07 19:08:07,068 INFO L231 Difference]: Finished difference. Result has 96 places, 89 transitions, 208 flow [2024-02-07 19:08:07,069 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=94, PETRI_DIFFERENCE_MINUEND_FLOW=198, PETRI_DIFFERENCE_MINUEND_PLACES=92, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=89, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=86, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=208, PETRI_PLACES=96, PETRI_TRANSITIONS=89} [2024-02-07 19:08:07,069 INFO L281 CegarLoopForPetriNet]: 92 programPoint places, 4 predicate places. [2024-02-07 19:08:07,069 INFO L495 AbstractCegarLoop]: Abstraction has has 96 places, 89 transitions, 208 flow [2024-02-07 19:08:07,070 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) [2024-02-07 19:08:07,070 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-02-07 19:08:07,070 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-02-07 19:08:07,070 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-02-07 19:08:07,070 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting t_funErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 35 more)] === [2024-02-07 19:08:07,071 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-07 19:08:07,071 INFO L85 PathProgramCache]: Analyzing trace with hash 1504678161, now seen corresponding path program 1 times [2024-02-07 19:08:07,071 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-07 19:08:07,071 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1727675629] [2024-02-07 19:08:07,072 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-07 19:08:07,072 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-07 19:08:07,083 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-07 19:08:07,140 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-07 19:08:07,140 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-07 19:08:07,140 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1727675629] [2024-02-07 19:08:07,141 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1727675629] provided 1 perfect and 0 imperfect interpolant sequences [2024-02-07 19:08:07,141 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-02-07 19:08:07,141 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-02-07 19:08:07,141 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1361381821] [2024-02-07 19:08:07,141 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-07 19:08:07,142 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-02-07 19:08:07,142 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-07 19:08:07,142 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-02-07 19:08:07,143 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-02-07 19:08:07,160 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 41 out of 94 [2024-02-07 19:08:07,161 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 96 places, 89 transitions, 208 flow. Second operand has 4 states, 4 states have (on average 43.0) internal successors, (172), 4 states have internal predecessors, (172), 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) [2024-02-07 19:08:07,161 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-07 19:08:07,161 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 41 of 94 [2024-02-07 19:08:07,161 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-07 19:08:07,390 INFO L124 PetriNetUnfolderBase]: 696/2090 cut-off events. [2024-02-07 19:08:07,391 INFO L125 PetriNetUnfolderBase]: For 135/135 co-relation queries the response was YES. [2024-02-07 19:08:07,394 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3782 conditions, 2090 events. 696/2090 cut-off events. For 135/135 co-relation queries the response was YES. Maximal size of possible extension queue 62. Compared 14713 event pairs, 360 based on Foata normal form. 14/1989 useless extension candidates. Maximal degree in co-relation 3767. Up to 1037 conditions per place. [2024-02-07 19:08:07,400 INFO L140 encePairwiseOnDemand]: 87/94 looper letters, 97 selfloop transitions, 5 changer transitions 0/139 dead transitions. [2024-02-07 19:08:07,401 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 100 places, 139 transitions, 524 flow [2024-02-07 19:08:07,401 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-02-07 19:08:07,401 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-02-07 19:08:07,402 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 310 transitions. [2024-02-07 19:08:07,402 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6595744680851063 [2024-02-07 19:08:07,402 INFO L175 Difference]: Start difference. First operand has 96 places, 89 transitions, 208 flow. Second operand 5 states and 310 transitions. [2024-02-07 19:08:07,403 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 100 places, 139 transitions, 524 flow [2024-02-07 19:08:07,404 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 97 places, 139 transitions, 516 flow, removed 0 selfloop flow, removed 3 redundant places. [2024-02-07 19:08:07,406 INFO L231 Difference]: Finished difference. Result has 100 places, 92 transitions, 243 flow [2024-02-07 19:08:07,406 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=94, PETRI_DIFFERENCE_MINUEND_FLOW=202, PETRI_DIFFERENCE_MINUEND_PLACES=93, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=89, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=85, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=243, PETRI_PLACES=100, PETRI_TRANSITIONS=92} [2024-02-07 19:08:07,407 INFO L281 CegarLoopForPetriNet]: 92 programPoint places, 8 predicate places. [2024-02-07 19:08:07,407 INFO L495 AbstractCegarLoop]: Abstraction has has 100 places, 92 transitions, 243 flow [2024-02-07 19:08:07,413 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 43.0) internal successors, (172), 4 states have internal predecessors, (172), 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) [2024-02-07 19:08:07,413 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-02-07 19:08:07,413 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-02-07 19:08:07,413 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-02-07 19:08:07,414 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 35 more)] === [2024-02-07 19:08:07,414 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-07 19:08:07,414 INFO L85 PathProgramCache]: Analyzing trace with hash -2032110683, now seen corresponding path program 1 times [2024-02-07 19:08:07,414 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-07 19:08:07,414 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1844928501] [2024-02-07 19:08:07,415 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-07 19:08:07,415 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-07 19:08:07,424 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-07 19:08:07,481 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-07 19:08:07,482 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-07 19:08:07,482 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1844928501] [2024-02-07 19:08:07,482 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1844928501] provided 1 perfect and 0 imperfect interpolant sequences [2024-02-07 19:08:07,482 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-02-07 19:08:07,482 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-02-07 19:08:07,482 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [616817190] [2024-02-07 19:08:07,483 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-07 19:08:07,483 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-02-07 19:08:07,483 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-07 19:08:07,484 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-02-07 19:08:07,484 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-02-07 19:08:07,494 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 43 out of 94 [2024-02-07 19:08:07,495 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 100 places, 92 transitions, 243 flow. Second operand has 4 states, 4 states have (on average 45.5) internal successors, (182), 4 states have internal predecessors, (182), 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) [2024-02-07 19:08:07,495 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-07 19:08:07,495 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 43 of 94 [2024-02-07 19:08:07,496 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-07 19:08:07,598 INFO L124 PetriNetUnfolderBase]: 205/693 cut-off events. [2024-02-07 19:08:07,598 INFO L125 PetriNetUnfolderBase]: For 193/193 co-relation queries the response was YES. [2024-02-07 19:08:07,599 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1338 conditions, 693 events. 205/693 cut-off events. For 193/193 co-relation queries the response was YES. Maximal size of possible extension queue 27. Compared 3895 event pairs, 115 based on Foata normal form. 49/711 useless extension candidates. Maximal degree in co-relation 1320. Up to 287 conditions per place. [2024-02-07 19:08:07,601 INFO L140 encePairwiseOnDemand]: 90/94 looper letters, 53 selfloop transitions, 2 changer transitions 0/86 dead transitions. [2024-02-07 19:08:07,601 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 78 places, 86 transitions, 331 flow [2024-02-07 19:08:07,602 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-02-07 19:08:07,602 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-02-07 19:08:07,602 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 226 transitions. [2024-02-07 19:08:07,603 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.601063829787234 [2024-02-07 19:08:07,603 INFO L175 Difference]: Start difference. First operand has 100 places, 92 transitions, 243 flow. Second operand 4 states and 226 transitions. [2024-02-07 19:08:07,603 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 78 places, 86 transitions, 331 flow [2024-02-07 19:08:07,604 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 75 places, 86 transitions, 324 flow, removed 0 selfloop flow, removed 3 redundant places. [2024-02-07 19:08:07,605 INFO L231 Difference]: Finished difference. Result has 75 places, 65 transitions, 172 flow [2024-02-07 19:08:07,605 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=94, PETRI_DIFFERENCE_MINUEND_FLOW=168, PETRI_DIFFERENCE_MINUEND_PLACES=72, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=65, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=63, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=172, PETRI_PLACES=75, PETRI_TRANSITIONS=65} [2024-02-07 19:08:07,606 INFO L281 CegarLoopForPetriNet]: 92 programPoint places, -17 predicate places. [2024-02-07 19:08:07,606 INFO L495 AbstractCegarLoop]: Abstraction has has 75 places, 65 transitions, 172 flow [2024-02-07 19:08:07,606 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 45.5) internal successors, (182), 4 states have internal predecessors, (182), 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) [2024-02-07 19:08:07,606 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-02-07 19:08:07,606 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-02-07 19:08:07,607 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-02-07 19:08:07,607 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting t_funErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 35 more)] === [2024-02-07 19:08:07,607 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-07 19:08:07,607 INFO L85 PathProgramCache]: Analyzing trace with hash -599616663, now seen corresponding path program 1 times [2024-02-07 19:08:07,607 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-07 19:08:07,608 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [397214127] [2024-02-07 19:08:07,608 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-07 19:08:07,608 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-07 19:08:07,615 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-07 19:08:07,667 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-07 19:08:07,668 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-07 19:08:07,668 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [397214127] [2024-02-07 19:08:07,668 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [397214127] provided 1 perfect and 0 imperfect interpolant sequences [2024-02-07 19:08:07,668 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-02-07 19:08:07,668 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-02-07 19:08:07,668 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1765778334] [2024-02-07 19:08:07,669 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-07 19:08:07,669 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-02-07 19:08:07,669 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-07 19:08:07,669 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-02-07 19:08:07,670 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-02-07 19:08:07,700 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 39 out of 94 [2024-02-07 19:08:07,701 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 75 places, 65 transitions, 172 flow. Second operand has 5 states, 5 states have (on average 40.8) internal successors, (204), 5 states have internal predecessors, (204), 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) [2024-02-07 19:08:07,701 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-07 19:08:07,701 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 39 of 94 [2024-02-07 19:08:07,701 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-07 19:08:07,873 INFO L124 PetriNetUnfolderBase]: 222/718 cut-off events. [2024-02-07 19:08:07,874 INFO L125 PetriNetUnfolderBase]: For 158/164 co-relation queries the response was YES. [2024-02-07 19:08:07,875 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1436 conditions, 718 events. 222/718 cut-off events. For 158/164 co-relation queries the response was YES. Maximal size of possible extension queue 25. Compared 3871 event pairs, 73 based on Foata normal form. 6/687 useless extension candidates. Maximal degree in co-relation 1419. Up to 160 conditions per place. [2024-02-07 19:08:07,879 INFO L140 encePairwiseOnDemand]: 88/94 looper letters, 85 selfloop transitions, 7 changer transitions 0/117 dead transitions. [2024-02-07 19:08:07,879 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 81 places, 117 transitions, 476 flow [2024-02-07 19:08:07,879 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-02-07 19:08:07,880 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-02-07 19:08:07,880 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 368 transitions. [2024-02-07 19:08:07,881 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5592705167173252 [2024-02-07 19:08:07,881 INFO L175 Difference]: Start difference. First operand has 75 places, 65 transitions, 172 flow. Second operand 7 states and 368 transitions. [2024-02-07 19:08:07,881 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 81 places, 117 transitions, 476 flow [2024-02-07 19:08:07,886 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 79 places, 117 transitions, 471 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-02-07 19:08:07,888 INFO L231 Difference]: Finished difference. Result has 81 places, 68 transitions, 207 flow [2024-02-07 19:08:07,888 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=94, PETRI_DIFFERENCE_MINUEND_FLOW=169, PETRI_DIFFERENCE_MINUEND_PLACES=73, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=65, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=60, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=207, PETRI_PLACES=81, PETRI_TRANSITIONS=68} [2024-02-07 19:08:07,891 INFO L281 CegarLoopForPetriNet]: 92 programPoint places, -11 predicate places. [2024-02-07 19:08:07,892 INFO L495 AbstractCegarLoop]: Abstraction has has 81 places, 68 transitions, 207 flow [2024-02-07 19:08:07,892 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 40.8) internal successors, (204), 5 states have internal predecessors, (204), 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) [2024-02-07 19:08:07,893 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-02-07 19:08:07,893 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-02-07 19:08:07,893 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-02-07 19:08:07,893 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 35 more)] === [2024-02-07 19:08:07,894 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-07 19:08:07,894 INFO L85 PathProgramCache]: Analyzing trace with hash 1429078854, now seen corresponding path program 1 times [2024-02-07 19:08:07,894 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-07 19:08:07,899 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1101136169] [2024-02-07 19:08:07,900 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-07 19:08:07,900 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-07 19:08:07,924 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-02-07 19:08:07,924 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-02-07 19:08:07,936 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-02-07 19:08:07,957 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2024-02-07 19:08:07,958 INFO L360 BasicCegarLoop]: Counterexample is feasible [2024-02-07 19:08:07,958 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr3ASSERT_VIOLATIONWITNESS_INVARIANT (37 of 38 remaining) [2024-02-07 19:08:07,960 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT (36 of 38 remaining) [2024-02-07 19:08:07,960 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (35 of 38 remaining) [2024-02-07 19:08:07,960 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (34 of 38 remaining) [2024-02-07 19:08:07,961 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr4ASSERT_VIOLATIONWITNESS_INVARIANT (33 of 38 remaining) [2024-02-07 19:08:07,961 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr5ASSERT_VIOLATIONWITNESS_INVARIANT (32 of 38 remaining) [2024-02-07 19:08:07,961 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr6ASSERT_VIOLATIONWITNESS_INVARIANT (31 of 38 remaining) [2024-02-07 19:08:07,961 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr7ASSERT_VIOLATIONWITNESS_INVARIANT (30 of 38 remaining) [2024-02-07 19:08:07,961 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr8ASSERT_VIOLATIONWITNESS_INVARIANT (29 of 38 remaining) [2024-02-07 19:08:07,962 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (28 of 38 remaining) [2024-02-07 19:08:07,962 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONWITNESS_INVARIANT (27 of 38 remaining) [2024-02-07 19:08:07,962 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1ASSERT_VIOLATIONWITNESS_INVARIANT (26 of 38 remaining) [2024-02-07 19:08:07,962 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2ASSERT_VIOLATIONWITNESS_INVARIANT (25 of 38 remaining) [2024-02-07 19:08:07,962 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3ASSERT_VIOLATIONERROR_FUNCTION (24 of 38 remaining) [2024-02-07 19:08:07,963 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr4ASSERT_VIOLATIONWITNESS_INVARIANT (23 of 38 remaining) [2024-02-07 19:08:07,963 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr5ASSERT_VIOLATIONERROR_FUNCTION (22 of 38 remaining) [2024-02-07 19:08:07,963 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr6ASSERT_VIOLATIONWITNESS_INVARIANT (21 of 38 remaining) [2024-02-07 19:08:07,963 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr7ASSERT_VIOLATIONWITNESS_INVARIANT (20 of 38 remaining) [2024-02-07 19:08:07,963 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr8ASSERT_VIOLATIONWITNESS_INVARIANT (19 of 38 remaining) [2024-02-07 19:08:07,963 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr9ASSERT_VIOLATIONWITNESS_INVARIANT (18 of 38 remaining) [2024-02-07 19:08:07,964 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr10ASSERT_VIOLATIONWITNESS_INVARIANT (17 of 38 remaining) [2024-02-07 19:08:07,964 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr11ASSERT_VIOLATIONWITNESS_INVARIANT (16 of 38 remaining) [2024-02-07 19:08:07,964 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr12ASSERT_VIOLATIONERROR_FUNCTION (15 of 38 remaining) [2024-02-07 19:08:07,964 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr13ASSERT_VIOLATIONWITNESS_INVARIANT (14 of 38 remaining) [2024-02-07 19:08:07,964 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONWITNESS_INVARIANT (13 of 38 remaining) [2024-02-07 19:08:07,965 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1ASSERT_VIOLATIONWITNESS_INVARIANT (12 of 38 remaining) [2024-02-07 19:08:07,965 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2ASSERT_VIOLATIONWITNESS_INVARIANT (11 of 38 remaining) [2024-02-07 19:08:07,965 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3ASSERT_VIOLATIONERROR_FUNCTION (10 of 38 remaining) [2024-02-07 19:08:07,965 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr4ASSERT_VIOLATIONWITNESS_INVARIANT (9 of 38 remaining) [2024-02-07 19:08:07,965 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr5ASSERT_VIOLATIONERROR_FUNCTION (8 of 38 remaining) [2024-02-07 19:08:07,966 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr6ASSERT_VIOLATIONWITNESS_INVARIANT (7 of 38 remaining) [2024-02-07 19:08:07,966 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr7ASSERT_VIOLATIONWITNESS_INVARIANT (6 of 38 remaining) [2024-02-07 19:08:07,966 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr8ASSERT_VIOLATIONWITNESS_INVARIANT (5 of 38 remaining) [2024-02-07 19:08:07,966 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr9ASSERT_VIOLATIONWITNESS_INVARIANT (4 of 38 remaining) [2024-02-07 19:08:07,966 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr10ASSERT_VIOLATIONWITNESS_INVARIANT (3 of 38 remaining) [2024-02-07 19:08:07,967 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr11ASSERT_VIOLATIONWITNESS_INVARIANT (2 of 38 remaining) [2024-02-07 19:08:07,967 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr12ASSERT_VIOLATIONERROR_FUNCTION (1 of 38 remaining) [2024-02-07 19:08:07,967 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr13ASSERT_VIOLATIONWITNESS_INVARIANT (0 of 38 remaining) [2024-02-07 19:08:07,967 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-02-07 19:08:07,968 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1, 1] [2024-02-07 19:08:07,973 INFO L229 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2024-02-07 19:08:07,974 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2024-02-07 19:08:07,998 INFO L503 ceAbstractionStarter]: Automizer considered 20 witness invariants [2024-02-07 19:08:07,998 INFO L504 ceAbstractionStarter]: WitnessConsidered=20 [2024-02-07 19:08:07,999 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 07.02 07:08:07 BasicIcfg [2024-02-07 19:08:07,999 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2024-02-07 19:08:07,999 INFO L158 Benchmark]: Toolchain (without parser) took 4329.70ms. Allocated memory was 207.6MB in the beginning and 268.4MB in the end (delta: 60.8MB). Free memory was 173.9MB in the beginning and 97.0MB in the end (delta: 76.9MB). Peak memory consumption was 137.9MB. Max. memory is 16.1GB. [2024-02-07 19:08:08,000 INFO L158 Benchmark]: Witness Parser took 0.23ms. Allocated memory is still 134.2MB. Free memory is still 95.7MB. There was no memory consumed. Max. memory is 16.1GB. [2024-02-07 19:08:08,000 INFO L158 Benchmark]: CDTParser took 0.14ms. Allocated memory is still 134.2MB. Free memory is still 105.0MB. There was no memory consumed. Max. memory is 16.1GB. [2024-02-07 19:08:08,000 INFO L158 Benchmark]: CACSL2BoogieTranslator took 748.18ms. Allocated memory is still 207.6MB. Free memory was 173.9MB in the beginning and 142.6MB in the end (delta: 31.3MB). Peak memory consumption was 31.5MB. Max. memory is 16.1GB. [2024-02-07 19:08:08,001 INFO L158 Benchmark]: Boogie Procedure Inliner took 48.15ms. Allocated memory is still 207.6MB. Free memory was 142.6MB in the beginning and 139.5MB in the end (delta: 3.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2024-02-07 19:08:08,001 INFO L158 Benchmark]: Boogie Preprocessor took 68.55ms. Allocated memory is still 207.6MB. Free memory was 139.5MB in the beginning and 137.4MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2024-02-07 19:08:08,001 INFO L158 Benchmark]: RCFGBuilder took 673.09ms. Allocated memory is still 207.6MB. Free memory was 137.4MB in the beginning and 78.7MB in the end (delta: 58.7MB). Peak memory consumption was 58.7MB. Max. memory is 16.1GB. [2024-02-07 19:08:08,002 INFO L158 Benchmark]: TraceAbstraction took 2785.34ms. Allocated memory was 207.6MB in the beginning and 268.4MB in the end (delta: 60.8MB). Free memory was 77.6MB in the beginning and 97.0MB in the end (delta: -19.4MB). Peak memory consumption was 41.4MB. Max. memory is 16.1GB. [2024-02-07 19:08:08,003 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * Witness Parser took 0.23ms. Allocated memory is still 134.2MB. Free memory is still 95.7MB. There was no memory consumed. Max. memory is 16.1GB. * CDTParser took 0.14ms. Allocated memory is still 134.2MB. Free memory is still 105.0MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 748.18ms. Allocated memory is still 207.6MB. Free memory was 173.9MB in the beginning and 142.6MB in the end (delta: 31.3MB). Peak memory consumption was 31.5MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 48.15ms. Allocated memory is still 207.6MB. Free memory was 142.6MB in the beginning and 139.5MB in the end (delta: 3.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 68.55ms. Allocated memory is still 207.6MB. Free memory was 139.5MB in the beginning and 137.4MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 673.09ms. Allocated memory is still 207.6MB. Free memory was 137.4MB in the beginning and 78.7MB in the end (delta: 58.7MB). Peak memory consumption was 58.7MB. Max. memory is 16.1GB. * TraceAbstraction took 2785.34ms. Allocated memory was 207.6MB in the beginning and 268.4MB in the end (delta: 60.8MB). Free memory was 77.6MB in the beginning and 97.0MB in the end (delta: -19.4MB). Peak memory consumption was 41.4MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 753]: invariant of correctness witness can be violated invariant of correctness witness can be violated We found a FailurePath: [L703] 0 int g = 0; [L704] 0 int h = 0; [L705] 0 int i = 0; [L706] 0 pthread_mutex_t A = { { 0, 0, 0, PTHREAD_MUTEX_TIMED_NP, 0, { { 0, 0 } } } }; [L706] 0 pthread_mutex_t A = { { 0, 0, 0, PTHREAD_MUTEX_TIMED_NP, 0, { { 0, 0 } } } }; [L706] 0 pthread_mutex_t A = { { 0, 0, 0, PTHREAD_MUTEX_TIMED_NP, 0, { { 0, 0 } } } }; [L706] 0 pthread_mutex_t A = { { 0, 0, 0, PTHREAD_MUTEX_TIMED_NP, 0, { { 0, 0 } } } }; [L706] 0 pthread_mutex_t A = { { 0, 0, 0, PTHREAD_MUTEX_TIMED_NP, 0, { { 0, 0 } } } }; [L706] 0 pthread_mutex_t A = { { 0, 0, 0, PTHREAD_MUTEX_TIMED_NP, 0, { { 0, 0 } } } }; [L707] 0 pthread_mutex_t B = { { 0, 0, 0, PTHREAD_MUTEX_TIMED_NP, 0, { { 0, 0 } } } }; [L707] 0 pthread_mutex_t B = { { 0, 0, 0, PTHREAD_MUTEX_TIMED_NP, 0, { { 0, 0 } } } }; [L707] 0 pthread_mutex_t B = { { 0, 0, 0, PTHREAD_MUTEX_TIMED_NP, 0, { { 0, 0 } } } }; [L707] 0 pthread_mutex_t B = { { 0, 0, 0, PTHREAD_MUTEX_TIMED_NP, 0, { { 0, 0 } } } }; [L707] 0 pthread_mutex_t B = { { 0, 0, 0, PTHREAD_MUTEX_TIMED_NP, 0, { { 0, 0 } } } }; [L707] 0 pthread_mutex_t B = { { 0, 0, 0, PTHREAD_MUTEX_TIMED_NP, 0, { { 0, 0 } } } }; [L708] 0 pthread_mutex_t C = { { 0, 0, 0, PTHREAD_MUTEX_TIMED_NP, 0, { { 0, 0 } } } }; [L708] 0 pthread_mutex_t C = { { 0, 0, 0, PTHREAD_MUTEX_TIMED_NP, 0, { { 0, 0 } } } }; [L708] 0 pthread_mutex_t C = { { 0, 0, 0, PTHREAD_MUTEX_TIMED_NP, 0, { { 0, 0 } } } }; [L708] 0 pthread_mutex_t C = { { 0, 0, 0, PTHREAD_MUTEX_TIMED_NP, 0, { { 0, 0 } } } }; [L708] 0 pthread_mutex_t C = { { 0, 0, 0, PTHREAD_MUTEX_TIMED_NP, 0, { { 0, 0 } } } }; [L708] 0 pthread_mutex_t C = { { 0, 0, 0, PTHREAD_MUTEX_TIMED_NP, 0, { { 0, 0 } } } }; [L731] 0 int x = __VERIFIER_nondet_int(); [L732] COND TRUE 0 x > -1000 [L733] 0 pthread_t id; [L734] FCALL, FORK 0 pthread_create(&id, ((void *)0), t_fun, ((void *)0)) VAL [A={3:0}, B={4:0}, C={5:0}, g=0, h=0, i=0, id={6:0}, x=0] [L737] 0 i = 11 VAL [A={3:0}, B={4:0}, C={5:0}, g=0, h=0, i=11, id={6:0}, x=0] [L738] 0 CodeAnnotStmt[Assertion[BinaryExpression[LOGICAND,BinaryExpression[COMPLEQ,UnaryExpression[MINUS,IntegerLiteral[999]],IdentifierExpression[x]],BinaryExpression[COMPLEQ,UnaryExpression[MINUS,IntegerLiteral[968]],IdentifierExpression[i]]]]] [L738] 0 g = x VAL [A={3:0}, B={4:0}, C={5:0}, g=0, h=0, i=11, id={6:0}, x=0] [L739] 0 CodeAnnotStmt[Assertion[BinaryExpression[LOGICAND,BinaryExpression[COMPLEQ,UnaryExpression[MINUS,IntegerLiteral[999]],IdentifierExpression[g]],BinaryExpression[COMPLEQ,UnaryExpression[MINUS,IntegerLiteral[999]],IdentifierExpression[x]]]]] [L739] CALL 0 plus(x, - 17) [L752] 0 CodeAnnotStmt[Assertion[BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[COMPLEQ,UnaryExpression[MINUS,IntegerLiteral[999]],IdentifierExpression[a]],BinaryExpression[COMPGEQ,BinaryExpression[ARITHPLUS,BinaryExpression[ARITHPLUS,IntegerLiteral[1016LL],CastExpression[ACSLType[long long],IdentifierExpression[a]]],CastExpression[ACSLType[long long],IdentifierExpression[b]]],IntegerLiteral[0LL]]],BinaryExpression[COMPGEQ,BinaryExpression[ARITHMINUS,BinaryExpression[ARITHPLUS,IntegerLiteral[982LL],CastExpression[ACSLType[long long],IdentifierExpression[a]]],CastExpression[ACSLType[long long],IdentifierExpression[b]]],IntegerLiteral[0LL]]],BinaryExpression[COMPEQ,UnaryExpression[MINUS,IntegerLiteral[17]],IdentifierExpression[b]]],BinaryExpression[COMPEQ,IdentifierExpression[b],UnaryExpression[MINUS,IntegerLiteral[17]]]]]] [L752] CALL 0 assume_abort_if_not(b >= 0 || a >= -2147483648 - b) [L21] COND FALSE 0 !(!cond) [L752] RET 0 assume_abort_if_not(b >= 0 || a >= -2147483648 - b) [L753] 0 CodeAnnotStmt[Assertion[BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[COMPLEQ,UnaryExpression[MINUS,IntegerLiteral[999]],IdentifierExpression[a]],BinaryExpression[COMPEQ,IntegerLiteral[31],IdentifierExpression[b]]],BinaryExpression[COMPEQ,IdentifierExpression[b],IntegerLiteral[31]]]]] VAL [A={3:0}, B={4:0}, C={5:0}, \old(a)=0, \old(b)=-17, a=0, b=-17, g=0, h=0, i=11] - UnprovableResult [Line: 738]: Unable to prove that invariant of correctness witness holds Unable to prove that invariant of correctness witness holds Reason: Not analyzed. - UnprovableResult [Line: 739]: Unable to prove that invariant of correctness witness holds Unable to prove that invariant of correctness witness holds Reason: Not analyzed. - UnprovableResult [Line: 752]: Unable to prove that invariant of correctness witness holds Unable to prove that invariant of correctness witness holds Reason: Not analyzed. - UnprovableResult [Line: 754]: Unable to prove that invariant of correctness witness holds Unable to prove that invariant of correctness witness holds Reason: Not analyzed. - UnprovableResult [Line: 740]: Unable to prove that invariant of correctness witness holds Unable to prove that invariant of correctness witness holds Reason: Not analyzed. - UnprovableResult [Line: 742]: Unable to prove that invariant of correctness witness holds Unable to prove that invariant of correctness witness holds Reason: Not analyzed. - UnprovableResult [Line: 743]: Unable to prove that invariant of correctness witness holds Unable to prove that invariant of correctness witness holds Reason: Not analyzed. - UnprovableResult [Line: 747]: Unable to prove that invariant of correctness witness holds Unable to prove that invariant of correctness witness holds Reason: Not analyzed. - UnprovableResult [Line: 734]: Unable to prove that petrification did provide enough thread instances (tool internal message) Unable to prove that petrification did provide enough thread instances (tool internal message) Reason: Not analyzed. - UnprovableResult [Line: 716]: Unable to prove that invariant of correctness witness holds Unable to prove that invariant of correctness witness holds Reason: Not analyzed. - UnprovableResult [Line: 717]: Unable to prove that invariant of correctness witness holds Unable to prove that invariant of correctness witness holds Reason: Not analyzed. - UnprovableResult [Line: 718]: Unable to prove that invariant of correctness witness holds Unable to prove that invariant of correctness witness holds Reason: Not analyzed. - UnprovableResult [Line: 19]: Unable to prove that a call to reach_error is unreachable Unable to prove that a call to reach_error is unreachable Reason: Not analyzed. - UnprovableResult [Line: 720]: Unable to prove that invariant of correctness witness holds Unable to prove that invariant of correctness witness holds Reason: Not analyzed. - UnprovableResult [Line: 19]: Unable to prove that a call to reach_error is unreachable Unable to prove that a call to reach_error is unreachable Reason: Not analyzed. - UnprovableResult [Line: 722]: Unable to prove that invariant of correctness witness holds Unable to prove that invariant of correctness witness holds Reason: Not analyzed. - UnprovableResult [Line: 752]: Unable to prove that invariant of correctness witness holds Unable to prove that invariant of correctness witness holds Reason: Not analyzed. - UnprovableResult [Line: 753]: Unable to prove that invariant of correctness witness holds Unable to prove that invariant of correctness witness holds Reason: Not analyzed. - UnprovableResult [Line: 754]: Unable to prove that invariant of correctness witness holds Unable to prove that invariant of correctness witness holds Reason: Not analyzed. - UnprovableResult [Line: 723]: Unable to prove that invariant of correctness witness holds Unable to prove that invariant of correctness witness holds Reason: Not analyzed. - UnprovableResult [Line: 724]: Unable to prove that invariant of correctness witness holds Unable to prove that invariant of correctness witness holds Reason: Not analyzed. - UnprovableResult [Line: 19]: Unable to prove that a call to reach_error is unreachable Unable to prove that a call to reach_error is unreachable Reason: Not analyzed. - UnprovableResult [Line: 726]: Unable to prove that invariant of correctness witness holds Unable to prove that invariant of correctness witness holds Reason: Not analyzed. - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 3 procedures, 141 locations, 38 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: 2.7s, OverallIterations: 7, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 1.4s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.1s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 513 SdHoareTripleChecker+Valid, 0.5s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 457 mSDsluCounter, 36 SdHoareTripleChecker+Invalid, 0.4s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 13 mSDsCounter, 31 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 837 IncrementalHoareTripleChecker+Invalid, 868 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 31 mSolverCounterUnsat, 23 mSDtfsCounter, 837 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 20 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=243occurred in iteration=4, InterpolantAutomatonStates: 27, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.6s InterpolantComputationTime, 75 NumberOfCodeBlocks, 75 NumberOfCodeBlocksAsserted, 7 NumberOfCheckSat, 57 ConstructedInterpolants, 0 QuantifiedInterpolants, 311 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 6 InterpolantComputations, 6 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 RESULT: Ultimate proved your program to be incorrect! [2024-02-07 19:08:08,035 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 Writing human readable error path to file UltimateCounterExample.errorpath Result: FALSE