./Ultimate.py --spec ../../../trunk/examples/svcomp/properties/unreach-call.prp --file ../../../trunk/examples/svcomp/pthread-wmm/safe006_pso.oepc_pso.opt_tso.oepc_tso.opt-thin000_pso.oepc_pso.opt_tso.oepc_tso.opt.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/safe006_pso.oepc_pso.opt_tso.oepc_tso.opt-thin000_pso.oepc_pso.opt_tso.oepc_tso.opt.yml/witness.yml --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 958ec4d9 Calling Ultimate with: /root/.sdkman/candidates/java/current/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReachWitnessValidation.xml -i ../../../trunk/examples/svcomp/pthread-wmm/safe006_pso.oepc_pso.opt_tso.oepc_tso.opt-thin000_pso.oepc_pso.opt_tso.oepc_tso.opt.i ./goblint.2024-02-07_10-47-16.files/SV-COMP24_unreach-call/safe006_pso.oepc_pso.opt_tso.oepc_tso.opt-thin000_pso.oepc_pso.opt_tso.oepc_tso.opt.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-dev-958ec4d-m [2024-02-07 14:24:12,528 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-02-07 14:24:12,591 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-02-07 14:24:12,597 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-02-07 14:24:12,598 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-02-07 14:24:12,620 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-02-07 14:24:12,620 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-02-07 14:24:12,621 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-02-07 14:24:12,621 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-02-07 14:24:12,625 INFO L153 SettingsManager]: * Use memory slicer=true [2024-02-07 14:24:12,625 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-02-07 14:24:12,625 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-02-07 14:24:12,626 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-02-07 14:24:12,627 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-02-07 14:24:12,627 INFO L153 SettingsManager]: * Use SBE=true [2024-02-07 14:24:12,627 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-02-07 14:24:12,627 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-02-07 14:24:12,627 INFO L153 SettingsManager]: * sizeof long=4 [2024-02-07 14:24:12,628 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-02-07 14:24:12,628 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-02-07 14:24:12,628 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-02-07 14:24:12,629 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-02-07 14:24:12,629 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-02-07 14:24:12,630 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-02-07 14:24:12,630 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-02-07 14:24:12,630 INFO L153 SettingsManager]: * sizeof long double=12 [2024-02-07 14:24:12,630 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-02-07 14:24:12,630 INFO L153 SettingsManager]: * Use constant arrays=true [2024-02-07 14:24:12,631 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-02-07 14:24:12,631 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-02-07 14:24:12,632 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-02-07 14:24:12,632 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-02-07 14:24:12,632 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-02-07 14:24:12,632 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-02-07 14:24:12,633 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-02-07 14:24:12,633 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-02-07 14:24:12,633 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-02-07 14:24:12,633 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-02-07 14:24:12,633 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-02-07 14:24:12,633 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-02-07 14:24:12,634 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2024-02-07 14:24:12,634 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-02-07 14:24:12,634 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-02-07 14:24:12,634 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessparser: Only consider loop invariants -> false [2024-02-07 14:24:12,866 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-02-07 14:24:12,895 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-02-07 14:24:12,897 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-02-07 14:24:12,898 INFO L270 PluginConnector]: Initializing CDTParser... [2024-02-07 14:24:12,899 INFO L274 PluginConnector]: CDTParser initialized [2024-02-07 14:24:12,899 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-wmm/safe006_pso.oepc_pso.opt_tso.oepc_tso.opt-thin000_pso.oepc_pso.opt_tso.oepc_tso.opt.i [2024-02-07 14:24:14,152 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-02-07 14:24:14,387 INFO L384 CDTParser]: Found 1 translation units. [2024-02-07 14:24:14,391 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/safe006_pso.oepc_pso.opt_tso.oepc_tso.opt-thin000_pso.oepc_pso.opt_tso.oepc_tso.opt.i [2024-02-07 14:24:14,411 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/090217131/c7e81c1e84864656a4b8f6d7b941dc2f/FLAGfaf2e94f9 [2024-02-07 14:24:14,426 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/090217131/c7e81c1e84864656a4b8f6d7b941dc2f [2024-02-07 14:24:14,428 INFO L270 PluginConnector]: Initializing Witness Parser... [2024-02-07 14:24:14,429 INFO L274 PluginConnector]: Witness Parser initialized [2024-02-07 14:24:14,429 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/./goblint.2024-02-07_10-47-16.files/SV-COMP24_unreach-call/safe006_pso.oepc_pso.opt_tso.oepc_tso.opt-thin000_pso.oepc_pso.opt_tso.oepc_tso.opt.yml/witness.yml [2024-02-07 14:24:14,527 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-02-07 14:24:14,528 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2024-02-07 14:24:14,530 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-02-07 14:24:14,530 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-02-07 14:24:14,533 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-02-07 14:24:14,534 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.02 02:24:14" (1/2) ... [2024-02-07 14:24:14,535 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5020f7a8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.02 02:24:14, skipping insertion in model container [2024-02-07 14:24:14,535 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.02 02:24:14" (1/2) ... [2024-02-07 14:24:14,536 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@653127ce and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.02 02:24:14, skipping insertion in model container [2024-02-07 14:24:14,536 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 07.02 02:24:14" (2/2) ... [2024-02-07 14:24:14,537 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5020f7a8 and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 07.02 02:24:14, skipping insertion in model container [2024-02-07 14:24:14,537 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 07.02 02:24:14" (2/2) ... [2024-02-07 14:24:14,537 INFO L83 nessWitnessExtractor]: Extracting all invariants from correctness witness [2024-02-07 14:24:14,597 INFO L74 edCorrectnessWitness]: Found the following entries in the witness: [2024-02-07 14:24:14,599 INFO L76 edCorrectnessWitness]: Location invariant before [L731-L731] 1 <= __unbuffered_cnt [2024-02-07 14:24:14,599 INFO L76 edCorrectnessWitness]: Location invariant before [L726-L726] x == 1 [2024-02-07 14:24:14,599 INFO L76 edCorrectnessWitness]: Location invariant before [L18-L18] ((0 <= expression) && (expression <= 1)) && (expression == 0 || expression == 1) [2024-02-07 14:24:14,599 INFO L76 edCorrectnessWitness]: Location invariant before [L722-L722] ((0 <= y) && (y <= 1)) && (y == 0 || y == 1) [2024-02-07 14:24:14,599 INFO L76 edCorrectnessWitness]: Location invariant before [L767-L767] main$tmp_guard0 == (_Bool)0 || main$tmp_guard0 == (_Bool)1 [2024-02-07 14:24:14,600 INFO L76 edCorrectnessWitness]: Location invariant before [L745-L745] 0 <= __unbuffered_cnt [2024-02-07 14:24:14,600 INFO L76 edCorrectnessWitness]: Location invariant before [L738-L738] ((0 <= __unbuffered_p1_EAX) && (__unbuffered_p1_EAX <= 1)) && (__unbuffered_p1_EAX == 0 || __unbuffered_p1_EAX == 1) [2024-02-07 14:24:14,600 INFO L76 edCorrectnessWitness]: Location invariant before [L765-L765] 0 <= __unbuffered_cnt [2024-02-07 14:24:14,600 INFO L76 edCorrectnessWitness]: Location invariant before [L730-L730] 0 <= __unbuffered_cnt [2024-02-07 14:24:14,600 INFO L76 edCorrectnessWitness]: Location invariant before [L772-L772] main$tmp_guard1 == (_Bool)0 || main$tmp_guard1 == (_Bool)1 [2024-02-07 14:24:14,601 INFO L76 edCorrectnessWitness]: Location invariant before [L766-L766] main$tmp_guard0 == (_Bool)0 || main$tmp_guard0 == (_Bool)1 [2024-02-07 14:24:14,601 INFO L76 edCorrectnessWitness]: Location invariant before [L773-L773] main$tmp_guard1 == (_Bool)0 || main$tmp_guard1 == (_Bool)1 [2024-02-07 14:24:14,601 INFO L76 edCorrectnessWitness]: Location invariant before [L771-L771] (((0 <= __unbuffered_p1_EAX) && (__unbuffered_p1_EAX <= 1)) && (__unbuffered_p0_EAX == 1)) && (__unbuffered_p1_EAX == 0 || __unbuffered_p1_EAX == 1) [2024-02-07 14:24:14,601 INFO L76 edCorrectnessWitness]: Location invariant before [L746-L746] 1 <= __unbuffered_cnt [2024-02-07 14:24:14,601 INFO L76 edCorrectnessWitness]: Location invariant before [L741-L741] y == 1 [2024-02-07 14:24:14,601 INFO L76 edCorrectnessWitness]: Location invariant before [L737-L737] ((0 <= x) && (x <= 1)) && (x == 0 || x == 1) [2024-02-07 14:24:14,601 INFO L76 edCorrectnessWitness]: Location invariant before [L723-L723] ((0 <= __unbuffered_p0_EAX) && (__unbuffered_p0_EAX <= 1)) && (__unbuffered_p0_EAX == 0 || __unbuffered_p0_EAX == 1) [2024-02-07 14:24:14,641 INFO L178 MainTranslator]: Built tables and reachable declarations [2024-02-07 14:24:14,767 WARN L239 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/safe006_pso.oepc_pso.opt_tso.oepc_tso.opt-thin000_pso.oepc_pso.opt_tso.oepc_tso.opt.i[1017,1030] [2024-02-07 14:24:14,950 INFO L209 PostProcessor]: Analyzing one entry point: main [2024-02-07 14:24:14,961 INFO L203 MainTranslator]: Completed pre-run Start Parsing Local [2024-02-07 14:24:15,002 WARN L239 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/safe006_pso.oepc_pso.opt_tso.oepc_tso.opt-thin000_pso.oepc_pso.opt_tso.oepc_tso.opt.i[1017,1030] 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 14:24:15,026 INFO L209 PostProcessor]: Analyzing one entry point: main [2024-02-07 14:24:15,048 INFO L207 MainTranslator]: Completed translation [2024-02-07 14:24:15,051 INFO L201 PluginConnector]: Adding new model witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 07.02 02:24:15 WrapperNode [2024-02-07 14:24:15,051 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-02-07 14:24:15,052 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-02-07 14:24:15,052 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-02-07 14:24:15,052 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-02-07 14:24:15,058 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 07.02 02:24:15" (1/1) ... [2024-02-07 14:24:15,075 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 07.02 02:24:15" (1/1) ... [2024-02-07 14:24:15,101 INFO L138 Inliner]: procedures = 175, calls = 40, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 65 [2024-02-07 14:24:15,101 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-02-07 14:24:15,102 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-02-07 14:24:15,102 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-02-07 14:24:15,102 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-02-07 14:24:15,110 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 07.02 02:24:15" (1/1) ... [2024-02-07 14:24:15,111 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 07.02 02:24:15" (1/1) ... [2024-02-07 14:24:15,118 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 07.02 02:24:15" (1/1) ... [2024-02-07 14:24:15,135 INFO L175 MemorySlicer]: Split 4 memory accesses to 3 slices as follows [2, 1, 1]. 50 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2, 0, 0]. The 2 writes are split as follows [0, 1, 1]. [2024-02-07 14:24:15,135 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 07.02 02:24:15" (1/1) ... [2024-02-07 14:24:15,135 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 07.02 02:24:15" (1/1) ... [2024-02-07 14:24:15,147 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 07.02 02:24:15" (1/1) ... [2024-02-07 14:24:15,148 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 07.02 02:24:15" (1/1) ... [2024-02-07 14:24:15,151 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 07.02 02:24:15" (1/1) ... [2024-02-07 14:24:15,152 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 07.02 02:24:15" (1/1) ... [2024-02-07 14:24:15,157 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-02-07 14:24:15,159 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-02-07 14:24:15,159 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-02-07 14:24:15,159 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-02-07 14:24:15,160 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 07.02 02:24:15" (1/1) ... [2024-02-07 14:24:15,165 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-02-07 14:24:15,171 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-02-07 14:24:15,185 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 14:24:15,199 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 14:24:15,222 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-02-07 14:24:15,222 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2024-02-07 14:24:15,222 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#2 [2024-02-07 14:24:15,222 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2024-02-07 14:24:15,222 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-02-07 14:24:15,223 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2024-02-07 14:24:15,223 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2024-02-07 14:24:15,223 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2024-02-07 14:24:15,223 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2024-02-07 14:24:15,223 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2024-02-07 14:24:15,223 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2024-02-07 14:24:15,223 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-02-07 14:24:15,223 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-02-07 14:24:15,223 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2024-02-07 14:24:15,224 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2024-02-07 14:24:15,224 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-02-07 14:24:15,224 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-02-07 14:24:15,225 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 14:24:15,312 INFO L244 CfgBuilder]: Building ICFG [2024-02-07 14:24:15,314 INFO L270 CfgBuilder]: Building CFG for each procedure with an implementation [2024-02-07 14:24:15,445 INFO L289 CfgBuilder]: Ommited future-live optimization because the input is a concurrent program. [2024-02-07 14:24:15,445 INFO L293 CfgBuilder]: Performing block encoding [2024-02-07 14:24:15,534 INFO L315 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-02-07 14:24:15,534 INFO L320 CfgBuilder]: Removed 0 assume(true) statements. [2024-02-07 14:24:15,534 INFO L201 PluginConnector]: Adding new model witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.02 02:24:15 BoogieIcfgContainer [2024-02-07 14:24:15,535 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-02-07 14:24:15,536 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-02-07 14:24:15,536 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-02-07 14:24:15,538 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-02-07 14:24:15,539 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 07.02 02:24:14" (1/4) ... [2024-02-07 14:24:15,539 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3c97bce5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.02 02:24:15, skipping insertion in model container [2024-02-07 14:24:15,539 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 07.02 02:24:14" (2/4) ... [2024-02-07 14:24:15,539 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3c97bce5 and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CORRECTNESS_WITNESS 07.02 02:24:15, skipping insertion in model container [2024-02-07 14:24:15,540 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 07.02 02:24:15" (3/4) ... [2024-02-07 14:24:15,540 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3c97bce5 and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CORRECTNESS_WITNESS 07.02 02:24:15, skipping insertion in model container [2024-02-07 14:24:15,540 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.02 02:24:15" (4/4) ... [2024-02-07 14:24:15,541 INFO L112 eAbstractionObserver]: Analyzing ICFG safe006_pso.oepc_pso.opt_tso.oepc_tso.opt-thin000_pso.oepc_pso.opt_tso.oepc_tso.opt.i [2024-02-07 14:24:15,553 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-02-07 14:24:15,554 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 18 error locations. [2024-02-07 14:24:15,554 INFO L518 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-02-07 14:24:15,596 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2024-02-07 14:24:15,627 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 53 places, 47 transitions, 102 flow [2024-02-07 14:24:15,662 INFO L124 PetriNetUnfolderBase]: 1/45 cut-off events. [2024-02-07 14:24:15,662 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-02-07 14:24:15,665 INFO L83 FinitePrefix]: Finished finitePrefix Result has 52 conditions, 45 events. 1/45 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 123 event pairs, 0 based on Foata normal form. 0/26 useless extension candidates. Maximal degree in co-relation 45. Up to 2 conditions per place. [2024-02-07 14:24:15,666 INFO L82 GeneralOperation]: Start removeDead. Operand has 53 places, 47 transitions, 102 flow [2024-02-07 14:24:15,669 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 51 places, 45 transitions, 96 flow [2024-02-07 14:24:15,680 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-02-07 14:24:15,686 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;@4578279f, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-02-07 14:24:15,686 INFO L358 AbstractCegarLoop]: Starting to check reachability of 30 error locations. [2024-02-07 14:24:15,689 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-02-07 14:24:15,689 INFO L124 PetriNetUnfolderBase]: 0/5 cut-off events. [2024-02-07 14:24:15,689 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-02-07 14:24:15,689 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-02-07 14:24:15,690 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1] [2024-02-07 14:24:15,690 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 27 more)] === [2024-02-07 14:24:15,697 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-07 14:24:15,697 INFO L85 PathProgramCache]: Analyzing trace with hash 8615742, now seen corresponding path program 1 times [2024-02-07 14:24:15,704 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-07 14:24:15,704 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [39088688] [2024-02-07 14:24:15,705 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-07 14:24:15,705 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-07 14:24:15,837 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-07 14:24:15,944 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 14:24:15,945 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-07 14:24:15,945 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [39088688] [2024-02-07 14:24:15,946 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [39088688] provided 1 perfect and 0 imperfect interpolant sequences [2024-02-07 14:24:15,946 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-02-07 14:24:15,946 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-02-07 14:24:15,948 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1333847562] [2024-02-07 14:24:15,948 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-07 14:24:15,955 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-02-07 14:24:15,959 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-07 14:24:15,986 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-02-07 14:24:15,986 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-02-07 14:24:15,988 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 47 [2024-02-07 14:24:15,994 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 51 places, 45 transitions, 96 flow. Second operand has 3 states, 3 states have (on average 15.0) internal successors, (45), 3 states have internal predecessors, (45), 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 14:24:15,995 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-07 14:24:15,995 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 47 [2024-02-07 14:24:15,996 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-07 14:24:16,280 INFO L124 PetriNetUnfolderBase]: 667/1291 cut-off events. [2024-02-07 14:24:16,280 INFO L125 PetriNetUnfolderBase]: For 4/4 co-relation queries the response was YES. [2024-02-07 14:24:16,285 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2403 conditions, 1291 events. 667/1291 cut-off events. For 4/4 co-relation queries the response was YES. Maximal size of possible extension queue 103. Compared 8260 event pairs, 263 based on Foata normal form. 46/984 useless extension candidates. Maximal degree in co-relation 2393. Up to 684 conditions per place. [2024-02-07 14:24:16,293 INFO L140 encePairwiseOnDemand]: 35/47 looper letters, 35 selfloop transitions, 2 changer transitions 0/49 dead transitions. [2024-02-07 14:24:16,293 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 45 places, 49 transitions, 178 flow [2024-02-07 14:24:16,294 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-02-07 14:24:16,296 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-02-07 14:24:16,302 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 95 transitions. [2024-02-07 14:24:16,303 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6737588652482269 [2024-02-07 14:24:16,305 INFO L175 Difference]: Start difference. First operand has 51 places, 45 transitions, 96 flow. Second operand 3 states and 95 transitions. [2024-02-07 14:24:16,306 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 45 places, 49 transitions, 178 flow [2024-02-07 14:24:16,308 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 43 places, 49 transitions, 176 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-02-07 14:24:16,313 INFO L231 Difference]: Finished difference. Result has 44 places, 36 transitions, 84 flow [2024-02-07 14:24:16,314 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=76, PETRI_DIFFERENCE_MINUEND_PLACES=41, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=36, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=34, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=84, PETRI_PLACES=44, PETRI_TRANSITIONS=36} [2024-02-07 14:24:16,317 INFO L281 CegarLoopForPetriNet]: 51 programPoint places, -7 predicate places. [2024-02-07 14:24:16,317 INFO L495 AbstractCegarLoop]: Abstraction has has 44 places, 36 transitions, 84 flow [2024-02-07 14:24:16,317 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 15.0) internal successors, (45), 3 states have internal predecessors, (45), 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 14:24:16,318 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-02-07 14:24:16,318 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1] [2024-02-07 14:24:16,318 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-02-07 14:24:16,318 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting P1Err0ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 27 more)] === [2024-02-07 14:24:16,319 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-07 14:24:16,319 INFO L85 PathProgramCache]: Analyzing trace with hash -310236553, now seen corresponding path program 1 times [2024-02-07 14:24:16,319 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-07 14:24:16,319 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1488208020] [2024-02-07 14:24:16,320 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-07 14:24:16,320 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-07 14:24:16,345 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-07 14:24:16,395 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 14:24:16,395 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-07 14:24:16,395 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1488208020] [2024-02-07 14:24:16,395 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1488208020] provided 1 perfect and 0 imperfect interpolant sequences [2024-02-07 14:24:16,396 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-02-07 14:24:16,396 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-02-07 14:24:16,396 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1030104643] [2024-02-07 14:24:16,396 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-07 14:24:16,397 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-02-07 14:24:16,397 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-07 14:24:16,398 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-02-07 14:24:16,398 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-02-07 14:24:16,398 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 47 [2024-02-07 14:24:16,398 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 44 places, 36 transitions, 84 flow. Second operand has 3 states, 3 states have (on average 15.666666666666666) internal successors, (47), 3 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-07 14:24:16,398 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-07 14:24:16,398 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 47 [2024-02-07 14:24:16,398 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-07 14:24:16,578 INFO L124 PetriNetUnfolderBase]: 633/1213 cut-off events. [2024-02-07 14:24:16,604 INFO L125 PetriNetUnfolderBase]: For 84/84 co-relation queries the response was YES. [2024-02-07 14:24:16,606 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2418 conditions, 1213 events. 633/1213 cut-off events. For 84/84 co-relation queries the response was YES. Maximal size of possible extension queue 94. Compared 7763 event pairs, 221 based on Foata normal form. 0/927 useless extension candidates. Maximal degree in co-relation 2407. Up to 700 conditions per place. [2024-02-07 14:24:16,612 INFO L140 encePairwiseOnDemand]: 44/47 looper letters, 37 selfloop transitions, 2 changer transitions 0/51 dead transitions. [2024-02-07 14:24:16,612 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 46 places, 51 transitions, 197 flow [2024-02-07 14:24:16,628 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-02-07 14:24:16,628 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-02-07 14:24:16,629 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 82 transitions. [2024-02-07 14:24:16,629 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5815602836879432 [2024-02-07 14:24:16,629 INFO L175 Difference]: Start difference. First operand has 44 places, 36 transitions, 84 flow. Second operand 3 states and 82 transitions. [2024-02-07 14:24:16,629 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 46 places, 51 transitions, 197 flow [2024-02-07 14:24:16,630 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 44 places, 51 transitions, 191 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-02-07 14:24:16,631 INFO L231 Difference]: Finished difference. Result has 45 places, 36 transitions, 88 flow [2024-02-07 14:24:16,631 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=80, PETRI_DIFFERENCE_MINUEND_PLACES=42, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=36, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=34, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=88, PETRI_PLACES=45, PETRI_TRANSITIONS=36} [2024-02-07 14:24:16,632 INFO L281 CegarLoopForPetriNet]: 51 programPoint places, -6 predicate places. [2024-02-07 14:24:16,632 INFO L495 AbstractCegarLoop]: Abstraction has has 45 places, 36 transitions, 88 flow [2024-02-07 14:24:16,632 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 15.666666666666666) internal successors, (47), 3 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-07 14:24:16,632 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-02-07 14:24:16,632 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1] [2024-02-07 14:24:16,632 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-02-07 14:24:16,632 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 27 more)] === [2024-02-07 14:24:16,633 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-07 14:24:16,633 INFO L85 PathProgramCache]: Analyzing trace with hash -310237506, now seen corresponding path program 1 times [2024-02-07 14:24:16,633 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-07 14:24:16,633 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1889936305] [2024-02-07 14:24:16,633 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-07 14:24:16,633 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-07 14:24:16,652 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-07 14:24:16,673 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 14:24:16,674 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-07 14:24:16,674 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1889936305] [2024-02-07 14:24:16,674 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1889936305] provided 1 perfect and 0 imperfect interpolant sequences [2024-02-07 14:24:16,674 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-02-07 14:24:16,675 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-02-07 14:24:16,675 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1783315635] [2024-02-07 14:24:16,675 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-07 14:24:16,675 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-02-07 14:24:16,675 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-07 14:24:16,676 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-02-07 14:24:16,676 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-02-07 14:24:16,676 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 47 [2024-02-07 14:24:16,676 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 45 places, 36 transitions, 88 flow. Second operand has 3 states, 3 states have (on average 16.0) internal successors, (48), 3 states have internal predecessors, (48), 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 14:24:16,677 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-07 14:24:16,677 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 47 [2024-02-07 14:24:16,677 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-07 14:24:16,764 INFO L124 PetriNetUnfolderBase]: 456/866 cut-off events. [2024-02-07 14:24:16,765 INFO L125 PetriNetUnfolderBase]: For 92/93 co-relation queries the response was YES. [2024-02-07 14:24:16,766 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1837 conditions, 866 events. 456/866 cut-off events. For 92/93 co-relation queries the response was YES. Maximal size of possible extension queue 75. Compared 4883 event pairs, 158 based on Foata normal form. 0/742 useless extension candidates. Maximal degree in co-relation 1825. Up to 571 conditions per place. [2024-02-07 14:24:16,769 INFO L140 encePairwiseOnDemand]: 41/47 looper letters, 38 selfloop transitions, 3 changer transitions 0/53 dead transitions. [2024-02-07 14:24:16,769 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 47 places, 53 transitions, 214 flow [2024-02-07 14:24:16,770 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-02-07 14:24:16,770 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-02-07 14:24:16,770 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 86 transitions. [2024-02-07 14:24:16,771 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6099290780141844 [2024-02-07 14:24:16,771 INFO L175 Difference]: Start difference. First operand has 45 places, 36 transitions, 88 flow. Second operand 3 states and 86 transitions. [2024-02-07 14:24:16,771 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 47 places, 53 transitions, 214 flow [2024-02-07 14:24:16,771 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 45 places, 53 transitions, 208 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-02-07 14:24:16,772 INFO L231 Difference]: Finished difference. Result has 46 places, 38 transitions, 107 flow [2024-02-07 14:24:16,772 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=84, PETRI_DIFFERENCE_MINUEND_PLACES=43, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=36, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=33, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=107, PETRI_PLACES=46, PETRI_TRANSITIONS=38} [2024-02-07 14:24:16,773 INFO L281 CegarLoopForPetriNet]: 51 programPoint places, -5 predicate places. [2024-02-07 14:24:16,773 INFO L495 AbstractCegarLoop]: Abstraction has has 46 places, 38 transitions, 107 flow [2024-02-07 14:24:16,773 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 16.0) internal successors, (48), 3 states have internal predecessors, (48), 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 14:24:16,773 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-02-07 14:24:16,774 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2024-02-07 14:24:16,774 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-02-07 14:24:16,774 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 27 more)] === [2024-02-07 14:24:16,774 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-07 14:24:16,775 INFO L85 PathProgramCache]: Analyzing trace with hash -1027427785, now seen corresponding path program 1 times [2024-02-07 14:24:16,775 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-07 14:24:16,775 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [630523191] [2024-02-07 14:24:16,775 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-07 14:24:16,775 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-07 14:24:16,785 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-07 14:24:16,819 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 14:24:16,819 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-07 14:24:16,819 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [630523191] [2024-02-07 14:24:16,820 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [630523191] provided 1 perfect and 0 imperfect interpolant sequences [2024-02-07 14:24:16,820 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-02-07 14:24:16,820 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-02-07 14:24:16,820 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1044221955] [2024-02-07 14:24:16,820 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-07 14:24:16,821 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-02-07 14:24:16,821 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-07 14:24:16,821 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-02-07 14:24:16,821 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-02-07 14:24:16,822 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 47 [2024-02-07 14:24:16,822 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 46 places, 38 transitions, 107 flow. Second operand has 3 states, 3 states have (on average 15.333333333333334) internal successors, (46), 3 states have internal predecessors, (46), 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 14:24:16,822 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-07 14:24:16,822 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 47 [2024-02-07 14:24:16,822 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-07 14:24:16,893 INFO L124 PetriNetUnfolderBase]: 456/989 cut-off events. [2024-02-07 14:24:16,893 INFO L125 PetriNetUnfolderBase]: For 159/160 co-relation queries the response was YES. [2024-02-07 14:24:16,895 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2145 conditions, 989 events. 456/989 cut-off events. For 159/160 co-relation queries the response was YES. Maximal size of possible extension queue 77. Compared 6236 event pairs, 438 based on Foata normal form. 0/835 useless extension candidates. Maximal degree in co-relation 2132. Up to 771 conditions per place. [2024-02-07 14:24:16,898 INFO L140 encePairwiseOnDemand]: 45/47 looper letters, 25 selfloop transitions, 1 changer transitions 0/37 dead transitions. [2024-02-07 14:24:16,898 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 47 places, 37 transitions, 157 flow [2024-02-07 14:24:16,898 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-02-07 14:24:16,898 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-02-07 14:24:16,899 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 64 transitions. [2024-02-07 14:24:16,899 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45390070921985815 [2024-02-07 14:24:16,899 INFO L175 Difference]: Start difference. First operand has 46 places, 38 transitions, 107 flow. Second operand 3 states and 64 transitions. [2024-02-07 14:24:16,899 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 47 places, 37 transitions, 157 flow [2024-02-07 14:24:16,900 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 46 places, 37 transitions, 154 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-02-07 14:24:16,900 INFO L231 Difference]: Finished difference. Result has 46 places, 37 transitions, 104 flow [2024-02-07 14:24:16,901 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=102, PETRI_DIFFERENCE_MINUEND_PLACES=44, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=37, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=36, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=104, PETRI_PLACES=46, PETRI_TRANSITIONS=37} [2024-02-07 14:24:16,901 INFO L281 CegarLoopForPetriNet]: 51 programPoint places, -5 predicate places. [2024-02-07 14:24:16,901 INFO L495 AbstractCegarLoop]: Abstraction has has 46 places, 37 transitions, 104 flow [2024-02-07 14:24:16,902 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 15.333333333333334) internal successors, (46), 3 states have internal predecessors, (46), 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 14:24:16,902 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-02-07 14:24:16,902 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-02-07 14:24:16,902 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-02-07 14:24:16,902 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting P1Err0ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 27 more)] === [2024-02-07 14:24:16,902 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-07 14:24:16,903 INFO L85 PathProgramCache]: Analyzing trace with hash 1703477813, now seen corresponding path program 1 times [2024-02-07 14:24:16,903 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-07 14:24:16,903 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1531336461] [2024-02-07 14:24:16,903 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-07 14:24:16,903 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-07 14:24:16,912 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-07 14:24:16,933 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 14:24:16,934 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-07 14:24:16,934 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1531336461] [2024-02-07 14:24:16,934 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1531336461] provided 1 perfect and 0 imperfect interpolant sequences [2024-02-07 14:24:16,934 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-02-07 14:24:16,934 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-02-07 14:24:16,934 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1413804175] [2024-02-07 14:24:16,935 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-07 14:24:16,935 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-02-07 14:24:16,935 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-07 14:24:16,935 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-02-07 14:24:16,935 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-02-07 14:24:16,936 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 47 [2024-02-07 14:24:16,936 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 46 places, 37 transitions, 104 flow. Second operand has 3 states, 3 states have (on average 16.333333333333332) internal successors, (49), 3 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-07 14:24:16,936 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-07 14:24:16,936 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 47 [2024-02-07 14:24:16,936 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-07 14:24:17,023 INFO L124 PetriNetUnfolderBase]: 416/837 cut-off events. [2024-02-07 14:24:17,024 INFO L125 PetriNetUnfolderBase]: For 135/136 co-relation queries the response was YES. [2024-02-07 14:24:17,025 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1826 conditions, 837 events. 416/837 cut-off events. For 135/136 co-relation queries the response was YES. Maximal size of possible extension queue 66. Compared 4866 event pairs, 179 based on Foata normal form. 27/768 useless extension candidates. Maximal degree in co-relation 1816. Up to 449 conditions per place. [2024-02-07 14:24:17,027 INFO L140 encePairwiseOnDemand]: 45/47 looper letters, 38 selfloop transitions, 1 changer transitions 0/50 dead transitions. [2024-02-07 14:24:17,027 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 47 places, 50 transitions, 213 flow [2024-02-07 14:24:17,028 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-02-07 14:24:17,028 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-02-07 14:24:17,028 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 80 transitions. [2024-02-07 14:24:17,029 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5673758865248227 [2024-02-07 14:24:17,029 INFO L175 Difference]: Start difference. First operand has 46 places, 37 transitions, 104 flow. Second operand 3 states and 80 transitions. [2024-02-07 14:24:17,029 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 47 places, 50 transitions, 213 flow [2024-02-07 14:24:17,030 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 45 places, 50 transitions, 210 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-02-07 14:24:17,030 INFO L231 Difference]: Finished difference. Result has 45 places, 36 transitions, 99 flow [2024-02-07 14:24:17,030 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=97, PETRI_DIFFERENCE_MINUEND_PLACES=43, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=36, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=35, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=99, PETRI_PLACES=45, PETRI_TRANSITIONS=36} [2024-02-07 14:24:17,031 INFO L281 CegarLoopForPetriNet]: 51 programPoint places, -6 predicate places. [2024-02-07 14:24:17,031 INFO L495 AbstractCegarLoop]: Abstraction has has 45 places, 36 transitions, 99 flow [2024-02-07 14:24:17,031 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 16.333333333333332) internal successors, (49), 3 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-07 14:24:17,031 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-02-07 14:24:17,031 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-02-07 14:24:17,032 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-02-07 14:24:17,032 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 27 more)] === [2024-02-07 14:24:17,032 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-07 14:24:17,032 INFO L85 PathProgramCache]: Analyzing trace with hash 512795764, now seen corresponding path program 1 times [2024-02-07 14:24:17,032 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-07 14:24:17,033 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2094496723] [2024-02-07 14:24:17,033 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-07 14:24:17,033 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-07 14:24:17,039 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-07 14:24:17,058 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 14:24:17,058 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-07 14:24:17,058 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2094496723] [2024-02-07 14:24:17,059 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2094496723] provided 1 perfect and 0 imperfect interpolant sequences [2024-02-07 14:24:17,059 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-02-07 14:24:17,059 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-02-07 14:24:17,059 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1431351305] [2024-02-07 14:24:17,059 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-07 14:24:17,059 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-02-07 14:24:17,060 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-07 14:24:17,060 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-02-07 14:24:17,060 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-02-07 14:24:17,060 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 47 [2024-02-07 14:24:17,061 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 45 places, 36 transitions, 99 flow. Second operand has 3 states, 3 states have (on average 16.333333333333332) internal successors, (49), 3 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-07 14:24:17,061 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-07 14:24:17,061 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 47 [2024-02-07 14:24:17,061 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-07 14:24:17,125 INFO L124 PetriNetUnfolderBase]: 376/754 cut-off events. [2024-02-07 14:24:17,125 INFO L125 PetriNetUnfolderBase]: For 146/146 co-relation queries the response was YES. [2024-02-07 14:24:17,126 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1640 conditions, 754 events. 376/754 cut-off events. For 146/146 co-relation queries the response was YES. Maximal size of possible extension queue 61. Compared 4253 event pairs, 121 based on Foata normal form. 26/690 useless extension candidates. Maximal degree in co-relation 1631. Up to 437 conditions per place. [2024-02-07 14:24:17,128 INFO L140 encePairwiseOnDemand]: 45/47 looper letters, 35 selfloop transitions, 1 changer transitions 0/47 dead transitions. [2024-02-07 14:24:17,128 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 46 places, 47 transitions, 197 flow [2024-02-07 14:24:17,129 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-02-07 14:24:17,129 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-02-07 14:24:17,129 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 77 transitions. [2024-02-07 14:24:17,130 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5460992907801419 [2024-02-07 14:24:17,130 INFO L175 Difference]: Start difference. First operand has 45 places, 36 transitions, 99 flow. Second operand 3 states and 77 transitions. [2024-02-07 14:24:17,130 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 46 places, 47 transitions, 197 flow [2024-02-07 14:24:17,130 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 44 places, 47 transitions, 193 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-02-07 14:24:17,131 INFO L231 Difference]: Finished difference. Result has 44 places, 35 transitions, 94 flow [2024-02-07 14:24:17,131 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=92, PETRI_DIFFERENCE_MINUEND_PLACES=42, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=35, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=34, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=94, PETRI_PLACES=44, PETRI_TRANSITIONS=35} [2024-02-07 14:24:17,132 INFO L281 CegarLoopForPetriNet]: 51 programPoint places, -7 predicate places. [2024-02-07 14:24:17,132 INFO L495 AbstractCegarLoop]: Abstraction has has 44 places, 35 transitions, 94 flow [2024-02-07 14:24:17,132 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 16.333333333333332) internal successors, (49), 3 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-07 14:24:17,132 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-02-07 14:24:17,132 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-02-07 14:24:17,133 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-02-07 14:24:17,133 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 27 more)] === [2024-02-07 14:24:17,133 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-07 14:24:17,133 INFO L85 PathProgramCache]: Analyzing trace with hash 484384323, now seen corresponding path program 1 times [2024-02-07 14:24:17,133 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-07 14:24:17,133 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1255684692] [2024-02-07 14:24:17,134 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-07 14:24:17,134 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-07 14:24:17,147 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-07 14:24:17,197 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 14:24:17,198 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-07 14:24:17,198 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1255684692] [2024-02-07 14:24:17,198 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1255684692] provided 1 perfect and 0 imperfect interpolant sequences [2024-02-07 14:24:17,198 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-02-07 14:24:17,198 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-02-07 14:24:17,198 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1151209277] [2024-02-07 14:24:17,199 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-07 14:24:17,199 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-02-07 14:24:17,199 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-07 14:24:17,199 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-02-07 14:24:17,200 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-02-07 14:24:17,202 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 47 [2024-02-07 14:24:17,202 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 44 places, 35 transitions, 94 flow. Second operand has 4 states, 4 states have (on average 15.0) internal successors, (60), 4 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-07 14:24:17,202 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-07 14:24:17,202 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 47 [2024-02-07 14:24:17,202 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-07 14:24:17,277 INFO L124 PetriNetUnfolderBase]: 294/688 cut-off events. [2024-02-07 14:24:17,278 INFO L125 PetriNetUnfolderBase]: For 85/85 co-relation queries the response was YES. [2024-02-07 14:24:17,279 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1418 conditions, 688 events. 294/688 cut-off events. For 85/85 co-relation queries the response was YES. Maximal size of possible extension queue 53. Compared 3949 event pairs, 62 based on Foata normal form. 29/614 useless extension candidates. Maximal degree in co-relation 1410. Up to 289 conditions per place. [2024-02-07 14:24:17,281 INFO L140 encePairwiseOnDemand]: 42/47 looper letters, 38 selfloop transitions, 4 changer transitions 0/53 dead transitions. [2024-02-07 14:24:17,281 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 47 places, 53 transitions, 230 flow [2024-02-07 14:24:17,281 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-02-07 14:24:17,281 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-02-07 14:24:17,282 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 96 transitions. [2024-02-07 14:24:17,282 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5106382978723404 [2024-02-07 14:24:17,282 INFO L175 Difference]: Start difference. First operand has 44 places, 35 transitions, 94 flow. Second operand 4 states and 96 transitions. [2024-02-07 14:24:17,282 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 47 places, 53 transitions, 230 flow [2024-02-07 14:24:17,283 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 46 places, 53 transitions, 227 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-02-07 14:24:17,283 INFO L231 Difference]: Finished difference. Result has 48 places, 36 transitions, 115 flow [2024-02-07 14:24:17,283 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=93, PETRI_DIFFERENCE_MINUEND_PLACES=43, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=35, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=31, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=115, PETRI_PLACES=48, PETRI_TRANSITIONS=36} [2024-02-07 14:24:17,284 INFO L281 CegarLoopForPetriNet]: 51 programPoint places, -3 predicate places. [2024-02-07 14:24:17,284 INFO L495 AbstractCegarLoop]: Abstraction has has 48 places, 36 transitions, 115 flow [2024-02-07 14:24:17,284 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 15.0) internal successors, (60), 4 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-07 14:24:17,284 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-02-07 14:24:17,285 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-02-07 14:24:17,285 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-02-07 14:24:17,285 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 27 more)] === [2024-02-07 14:24:17,285 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-07 14:24:17,285 INFO L85 PathProgramCache]: Analyzing trace with hash 654105723, now seen corresponding path program 1 times [2024-02-07 14:24:17,285 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-07 14:24:17,286 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [927897718] [2024-02-07 14:24:17,286 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-07 14:24:17,286 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-07 14:24:17,292 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-07 14:24:17,303 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 14:24:17,303 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-07 14:24:17,303 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [927897718] [2024-02-07 14:24:17,303 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [927897718] provided 1 perfect and 0 imperfect interpolant sequences [2024-02-07 14:24:17,303 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-02-07 14:24:17,304 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-02-07 14:24:17,304 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1613372560] [2024-02-07 14:24:17,304 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-07 14:24:17,304 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-02-07 14:24:17,304 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-07 14:24:17,305 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-02-07 14:24:17,305 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-02-07 14:24:17,305 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 47 [2024-02-07 14:24:17,305 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 48 places, 36 transitions, 115 flow. Second operand has 3 states, 3 states have (on average 17.0) internal successors, (51), 3 states have internal predecessors, (51), 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 14:24:17,305 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-07 14:24:17,306 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 47 [2024-02-07 14:24:17,306 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-07 14:24:17,358 INFO L124 PetriNetUnfolderBase]: 220/522 cut-off events. [2024-02-07 14:24:17,358 INFO L125 PetriNetUnfolderBase]: For 177/177 co-relation queries the response was YES. [2024-02-07 14:24:17,359 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1170 conditions, 522 events. 220/522 cut-off events. For 177/177 co-relation queries the response was YES. Maximal size of possible extension queue 34. Compared 2695 event pairs, 110 based on Foata normal form. 16/487 useless extension candidates. Maximal degree in co-relation 1159. Up to 336 conditions per place. [2024-02-07 14:24:17,360 INFO L140 encePairwiseOnDemand]: 42/47 looper letters, 25 selfloop transitions, 2 changer transitions 2/40 dead transitions. [2024-02-07 14:24:17,360 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 47 places, 40 transitions, 179 flow [2024-02-07 14:24:17,361 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-02-07 14:24:17,361 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-02-07 14:24:17,361 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 74 transitions. [2024-02-07 14:24:17,361 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.524822695035461 [2024-02-07 14:24:17,361 INFO L175 Difference]: Start difference. First operand has 48 places, 36 transitions, 115 flow. Second operand 3 states and 74 transitions. [2024-02-07 14:24:17,362 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 47 places, 40 transitions, 179 flow [2024-02-07 14:24:17,362 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 45 places, 40 transitions, 174 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-02-07 14:24:17,363 INFO L231 Difference]: Finished difference. Result has 45 places, 31 transitions, 96 flow [2024-02-07 14:24:17,363 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=98, PETRI_DIFFERENCE_MINUEND_PLACES=43, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=33, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=31, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=96, PETRI_PLACES=45, PETRI_TRANSITIONS=31} [2024-02-07 14:24:17,363 INFO L281 CegarLoopForPetriNet]: 51 programPoint places, -6 predicate places. [2024-02-07 14:24:17,364 INFO L495 AbstractCegarLoop]: Abstraction has has 45 places, 31 transitions, 96 flow [2024-02-07 14:24:17,364 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 17.0) internal successors, (51), 3 states have internal predecessors, (51), 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 14:24:17,364 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-02-07 14:24:17,364 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-02-07 14:24:17,364 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-02-07 14:24:17,364 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 27 more)] === [2024-02-07 14:24:17,365 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-07 14:24:17,365 INFO L85 PathProgramCache]: Analyzing trace with hash 197276518, now seen corresponding path program 1 times [2024-02-07 14:24:17,365 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-07 14:24:17,365 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [596982733] [2024-02-07 14:24:17,365 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-07 14:24:17,365 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-07 14:24:17,375 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-07 14:24:17,430 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 14:24:17,430 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-07 14:24:17,430 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [596982733] [2024-02-07 14:24:17,431 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [596982733] provided 1 perfect and 0 imperfect interpolant sequences [2024-02-07 14:24:17,431 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-02-07 14:24:17,431 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-02-07 14:24:17,431 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [191754901] [2024-02-07 14:24:17,431 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-07 14:24:17,431 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-02-07 14:24:17,432 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-07 14:24:17,432 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-02-07 14:24:17,432 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-02-07 14:24:17,434 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 47 [2024-02-07 14:24:17,434 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 45 places, 31 transitions, 96 flow. Second operand has 5 states, 5 states have (on average 15.2) internal successors, (76), 5 states have internal predecessors, (76), 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 14:24:17,434 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-07 14:24:17,434 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 47 [2024-02-07 14:24:17,434 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-07 14:24:17,552 INFO L124 PetriNetUnfolderBase]: 102/240 cut-off events. [2024-02-07 14:24:17,553 INFO L125 PetriNetUnfolderBase]: For 114/114 co-relation queries the response was YES. [2024-02-07 14:24:17,553 INFO L83 FinitePrefix]: Finished finitePrefix Result has 577 conditions, 240 events. 102/240 cut-off events. For 114/114 co-relation queries the response was YES. Maximal size of possible extension queue 15. Compared 831 event pairs, 26 based on Foata normal form. 16/241 useless extension candidates. Maximal degree in co-relation 567. Up to 86 conditions per place. [2024-02-07 14:24:17,554 INFO L140 encePairwiseOnDemand]: 42/47 looper letters, 26 selfloop transitions, 6 changer transitions 1/44 dead transitions. [2024-02-07 14:24:17,554 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 48 places, 44 transitions, 194 flow [2024-02-07 14:24:17,555 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-02-07 14:24:17,555 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-02-07 14:24:17,555 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 100 transitions. [2024-02-07 14:24:17,555 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.425531914893617 [2024-02-07 14:24:17,556 INFO L175 Difference]: Start difference. First operand has 45 places, 31 transitions, 96 flow. Second operand 5 states and 100 transitions. [2024-02-07 14:24:17,556 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 48 places, 44 transitions, 194 flow [2024-02-07 14:24:17,557 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 45 places, 44 transitions, 181 flow, removed 2 selfloop flow, removed 3 redundant places. [2024-02-07 14:24:17,557 INFO L231 Difference]: Finished difference. Result has 47 places, 31 transitions, 107 flow [2024-02-07 14:24:17,558 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=84, PETRI_DIFFERENCE_MINUEND_PLACES=41, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=31, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=25, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=107, PETRI_PLACES=47, PETRI_TRANSITIONS=31} [2024-02-07 14:24:17,558 INFO L281 CegarLoopForPetriNet]: 51 programPoint places, -4 predicate places. [2024-02-07 14:24:17,558 INFO L495 AbstractCegarLoop]: Abstraction has has 47 places, 31 transitions, 107 flow [2024-02-07 14:24:17,559 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 15.2) internal successors, (76), 5 states have internal predecessors, (76), 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 14:24:17,559 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-02-07 14:24:17,559 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-02-07 14:24:17,559 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-02-07 14:24:17,559 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 27 more)] === [2024-02-07 14:24:17,559 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-07 14:24:17,559 INFO L85 PathProgramCache]: Analyzing trace with hash 1262135352, now seen corresponding path program 1 times [2024-02-07 14:24:17,560 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-07 14:24:17,563 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [10589612] [2024-02-07 14:24:17,563 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-07 14:24:17,564 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-07 14:24:17,584 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-02-07 14:24:17,584 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-02-07 14:24:17,592 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-02-07 14:24:17,612 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2024-02-07 14:24:17,612 INFO L360 BasicCegarLoop]: Counterexample is feasible [2024-02-07 14:24:17,613 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr3ASSERT_VIOLATIONWITNESS_INVARIANT (29 of 30 remaining) [2024-02-07 14:24:17,615 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT (28 of 30 remaining) [2024-02-07 14:24:17,615 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT (27 of 30 remaining) [2024-02-07 14:24:17,615 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (26 of 30 remaining) [2024-02-07 14:24:17,615 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location P0Err3ASSERT_VIOLATIONWITNESS_INVARIANT (25 of 30 remaining) [2024-02-07 14:24:17,615 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location P0Err4ASSERT_VIOLATIONWITNESS_INVARIANT (24 of 30 remaining) [2024-02-07 14:24:17,615 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location P1Err0ASSERT_VIOLATIONWITNESS_INVARIANT (23 of 30 remaining) [2024-02-07 14:24:17,616 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location P1Err1ASSERT_VIOLATIONWITNESS_INVARIANT (22 of 30 remaining) [2024-02-07 14:24:17,616 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location P1Err2ASSERT_VIOLATIONWITNESS_INVARIANT (21 of 30 remaining) [2024-02-07 14:24:17,616 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location P1Err3ASSERT_VIOLATIONWITNESS_INVARIANT (20 of 30 remaining) [2024-02-07 14:24:17,617 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location P1Err4ASSERT_VIOLATIONWITNESS_INVARIANT (19 of 30 remaining) [2024-02-07 14:24:17,618 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT (18 of 30 remaining) [2024-02-07 14:24:17,618 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (17 of 30 remaining) [2024-02-07 14:24:17,618 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (16 of 30 remaining) [2024-02-07 14:24:17,618 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr4ASSERT_VIOLATIONWITNESS_INVARIANT (15 of 30 remaining) [2024-02-07 14:24:17,618 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr5ASSERT_VIOLATIONWITNESS_INVARIANT (14 of 30 remaining) [2024-02-07 14:24:17,618 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr6ASSERT_VIOLATIONWITNESS_INVARIANT (13 of 30 remaining) [2024-02-07 14:24:17,618 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION (12 of 30 remaining) [2024-02-07 14:24:17,619 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (11 of 30 remaining) [2024-02-07 14:24:17,619 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (10 of 30 remaining) [2024-02-07 14:24:17,619 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT (9 of 30 remaining) [2024-02-07 14:24:17,619 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT (8 of 30 remaining) [2024-02-07 14:24:17,619 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (7 of 30 remaining) [2024-02-07 14:24:17,619 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location P0Err3ASSERT_VIOLATIONWITNESS_INVARIANT (6 of 30 remaining) [2024-02-07 14:24:17,619 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location P0Err4ASSERT_VIOLATIONWITNESS_INVARIANT (5 of 30 remaining) [2024-02-07 14:24:17,620 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location P1Err0ASSERT_VIOLATIONWITNESS_INVARIANT (4 of 30 remaining) [2024-02-07 14:24:17,620 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location P1Err1ASSERT_VIOLATIONWITNESS_INVARIANT (3 of 30 remaining) [2024-02-07 14:24:17,620 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location P1Err2ASSERT_VIOLATIONWITNESS_INVARIANT (2 of 30 remaining) [2024-02-07 14:24:17,620 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location P1Err3ASSERT_VIOLATIONWITNESS_INVARIANT (1 of 30 remaining) [2024-02-07 14:24:17,620 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location P1Err4ASSERT_VIOLATIONWITNESS_INVARIANT (0 of 30 remaining) [2024-02-07 14:24:17,620 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-02-07 14:24:17,621 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-02-07 14:24:17,626 INFO L229 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2024-02-07 14:24:17,626 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2024-02-07 14:24:17,665 INFO L503 ceAbstractionStarter]: Automizer considered 17 witness invariants [2024-02-07 14:24:17,666 INFO L504 ceAbstractionStarter]: WitnessConsidered=17 [2024-02-07 14:24:17,667 INFO L201 PluginConnector]: Adding new model witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 07.02 02:24:17 BasicIcfg [2024-02-07 14:24:17,667 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2024-02-07 14:24:17,667 INFO L158 Benchmark]: Toolchain (without parser) took 3139.74ms. Allocated memory was 184.5MB in the beginning and 255.9MB in the end (delta: 71.3MB). Free memory was 107.6MB in the beginning and 197.7MB in the end (delta: -90.1MB). There was no memory consumed. Max. memory is 16.1GB. [2024-02-07 14:24:17,668 INFO L158 Benchmark]: CDTParser took 0.15ms. Allocated memory is still 184.5MB. Free memory is still 140.7MB. There was no memory consumed. Max. memory is 16.1GB. [2024-02-07 14:24:17,668 INFO L158 Benchmark]: Witness Parser took 0.17ms. Allocated memory is still 184.5MB. Free memory was 111.0MB in the beginning and 110.8MB in the end (delta: 225.8kB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2024-02-07 14:24:17,669 INFO L158 Benchmark]: CACSL2BoogieTranslator took 521.52ms. Allocated memory is still 184.5MB. Free memory was 107.3MB in the beginning and 142.0MB in the end (delta: -34.7MB). Peak memory consumption was 21.7MB. Max. memory is 16.1GB. [2024-02-07 14:24:17,669 INFO L158 Benchmark]: Boogie Procedure Inliner took 49.99ms. Allocated memory is still 184.5MB. Free memory was 142.0MB in the beginning and 139.9MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2024-02-07 14:24:17,670 INFO L158 Benchmark]: Boogie Preprocessor took 56.08ms. Allocated memory is still 184.5MB. Free memory was 139.9MB in the beginning and 137.6MB in the end (delta: 2.3MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2024-02-07 14:24:17,670 INFO L158 Benchmark]: RCFGBuilder took 375.91ms. Allocated memory is still 184.5MB. Free memory was 137.6MB in the beginning and 109.4MB in the end (delta: 28.3MB). Peak memory consumption was 29.4MB. Max. memory is 16.1GB. [2024-02-07 14:24:17,671 INFO L158 Benchmark]: TraceAbstraction took 2131.10ms. Allocated memory was 184.5MB in the beginning and 255.9MB in the end (delta: 71.3MB). Free memory was 109.4MB in the beginning and 197.7MB in the end (delta: -88.3MB). There was no memory consumed. Max. memory is 16.1GB. [2024-02-07 14:24:17,672 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.15ms. Allocated memory is still 184.5MB. Free memory is still 140.7MB. There was no memory consumed. Max. memory is 16.1GB. * Witness Parser took 0.17ms. Allocated memory is still 184.5MB. Free memory was 111.0MB in the beginning and 110.8MB in the end (delta: 225.8kB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 521.52ms. Allocated memory is still 184.5MB. Free memory was 107.3MB in the beginning and 142.0MB in the end (delta: -34.7MB). Peak memory consumption was 21.7MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 49.99ms. Allocated memory is still 184.5MB. Free memory was 142.0MB in the beginning and 139.9MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 56.08ms. Allocated memory is still 184.5MB. Free memory was 139.9MB in the beginning and 137.6MB in the end (delta: 2.3MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 375.91ms. Allocated memory is still 184.5MB. Free memory was 137.6MB in the beginning and 109.4MB in the end (delta: 28.3MB). Peak memory consumption was 29.4MB. Max. memory is 16.1GB. * TraceAbstraction took 2131.10ms. Allocated memory was 184.5MB in the beginning and 255.9MB in the end (delta: 71.3MB). Free memory was 109.4MB in the beginning and 197.7MB in the end (delta: -88.3MB). There was no memory consumed. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 771]: invariant of correctness witness can be violated invariant of correctness witness can be violated We found a FailurePath: [L708] 0 int __unbuffered_cnt = 0; [L710] 0 int __unbuffered_p0_EAX = 0; [L712] 0 int __unbuffered_p1_EAX = 0; [L713] 0 _Bool main$tmp_guard0; [L714] 0 _Bool main$tmp_guard1; [L716] 0 int x = 0; [L718] 0 int y = 0; [L760] 0 pthread_t t1925; [L761] FCALL, FORK 0 pthread_create(&t1925, ((void *)0), P0, ((void *)0)) VAL [__unbuffered_cnt=0, __unbuffered_p0_EAX=0, __unbuffered_p1_EAX=0, arg={0:0}, main$tmp_guard0=0, main$tmp_guard1=0, t1925={5:0}, x=0, y=0] [L722] 1 CodeAnnotStmt[Assertion[BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[COMPLEQ,IntegerLiteral[0],IdentifierExpression[y]],BinaryExpression[COMPLEQ,IdentifierExpression[y],IntegerLiteral[1]]],BinaryExpression[LOGICOR,BinaryExpression[COMPEQ,IdentifierExpression[y],IntegerLiteral[0]],BinaryExpression[COMPEQ,IdentifierExpression[y],IntegerLiteral[1]]]]]] [L722] 1 __unbuffered_p0_EAX = y [L723] 1 CodeAnnotStmt[Assertion[BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[COMPLEQ,IntegerLiteral[0],IdentifierExpression[__unbuffered_p0_EAX]],BinaryExpression[COMPLEQ,IdentifierExpression[__unbuffered_p0_EAX],IntegerLiteral[1]]],BinaryExpression[LOGICOR,BinaryExpression[COMPEQ,IdentifierExpression[__unbuffered_p0_EAX],IntegerLiteral[0]],BinaryExpression[COMPEQ,IdentifierExpression[__unbuffered_p0_EAX],IntegerLiteral[1]]]]]] VAL [__unbuffered_cnt=0, __unbuffered_p0_EAX=0, __unbuffered_p1_EAX=0, arg={0:0}, arg={0:0}, main$tmp_guard0=0, main$tmp_guard1=0, x=0, y=0] [L762] 0 pthread_t t1926; [L763] FCALL, FORK 0 pthread_create(&t1926, ((void *)0), P1, ((void *)0)) VAL [__unbuffered_cnt=0, __unbuffered_p0_EAX=0, __unbuffered_p1_EAX=0, arg={0:0}, arg={0:0}, arg={0:0}, main$tmp_guard0=0, main$tmp_guard1=0, t1925={5:0}, t1926={3:0}, x=0, y=0] [L737] 2 CodeAnnotStmt[Assertion[BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[COMPLEQ,IntegerLiteral[0],IdentifierExpression[x]],BinaryExpression[COMPLEQ,IdentifierExpression[x],IntegerLiteral[1]]],BinaryExpression[LOGICOR,BinaryExpression[COMPEQ,IdentifierExpression[x],IntegerLiteral[0]],BinaryExpression[COMPEQ,IdentifierExpression[x],IntegerLiteral[1]]]]]] [L737] 2 __unbuffered_p1_EAX = x [L738] 2 CodeAnnotStmt[Assertion[BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[COMPLEQ,IntegerLiteral[0],IdentifierExpression[__unbuffered_p1_EAX]],BinaryExpression[COMPLEQ,IdentifierExpression[__unbuffered_p1_EAX],IntegerLiteral[1]]],BinaryExpression[LOGICOR,BinaryExpression[COMPEQ,IdentifierExpression[__unbuffered_p1_EAX],IntegerLiteral[0]],BinaryExpression[COMPEQ,IdentifierExpression[__unbuffered_p1_EAX],IntegerLiteral[1]]]]]] VAL [__unbuffered_cnt=0, __unbuffered_p0_EAX=0, __unbuffered_p1_EAX=0, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, main$tmp_guard0=0, main$tmp_guard1=0, x=0, y=0] [L725] 1 x = 1 [L726] 1 CodeAnnotStmt[Assertion[BinaryExpression[COMPEQ,IdentifierExpression[x],IntegerLiteral[1]]]] VAL [__unbuffered_cnt=0, __unbuffered_p0_EAX=0, __unbuffered_p1_EAX=0, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, main$tmp_guard0=0, main$tmp_guard1=0, x=1, y=0] [L740] 2 y = 1 [L741] 2 CodeAnnotStmt[Assertion[BinaryExpression[COMPEQ,IdentifierExpression[y],IntegerLiteral[1]]]] VAL [__unbuffered_cnt=0, __unbuffered_p0_EAX=0, __unbuffered_p1_EAX=0, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, main$tmp_guard0=0, main$tmp_guard1=0, x=1, y=1] [L730] 1 CodeAnnotStmt[Assertion[BinaryExpression[COMPLEQ,IntegerLiteral[0],IdentifierExpression[__unbuffered_cnt]]]] [L730] 1 __unbuffered_cnt = __unbuffered_cnt + 1 [L731] 1 CodeAnnotStmt[Assertion[BinaryExpression[COMPLEQ,IntegerLiteral[1],IdentifierExpression[__unbuffered_cnt]]]] VAL [__unbuffered_cnt=1, __unbuffered_p0_EAX=0, __unbuffered_p1_EAX=0, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, main$tmp_guard0=0, main$tmp_guard1=0, x=1, y=1] [L745] 2 CodeAnnotStmt[Assertion[BinaryExpression[COMPLEQ,IntegerLiteral[0],IdentifierExpression[__unbuffered_cnt]]]] [L745] 2 __unbuffered_cnt = __unbuffered_cnt + 1 [L746] 2 CodeAnnotStmt[Assertion[BinaryExpression[COMPLEQ,IntegerLiteral[1],IdentifierExpression[__unbuffered_cnt]]]] VAL [__unbuffered_cnt=2, __unbuffered_p0_EAX=0, __unbuffered_p1_EAX=0, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, main$tmp_guard0=0, main$tmp_guard1=0, x=1, y=1] [L765] 0 CodeAnnotStmt[Assertion[BinaryExpression[COMPLEQ,IntegerLiteral[0],IdentifierExpression[__unbuffered_cnt]]]] [L765] 0 main$tmp_guard0 = __unbuffered_cnt == 2 [L766] 0 CodeAnnotStmt[Assertion[BinaryExpression[LOGICOR,BinaryExpression[COMPEQ,IdentifierExpression[main$tmp_guard0],CastExpression[ACSLType[_Bool],IntegerLiteral[0]]],BinaryExpression[COMPEQ,IdentifierExpression[main$tmp_guard0],CastExpression[ACSLType[_Bool],IntegerLiteral[1]]]]]] VAL [__unbuffered_cnt=2, __unbuffered_p0_EAX=0, __unbuffered_p1_EAX=0, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, main$tmp_guard0=1, main$tmp_guard1=0, t1925={5:0}, t1926={3:0}, x=1, y=1] [L767] 0 CodeAnnotStmt[Assertion[BinaryExpression[LOGICOR,BinaryExpression[COMPEQ,IdentifierExpression[main$tmp_guard0],CastExpression[ACSLType[_Bool],IntegerLiteral[0]]],BinaryExpression[COMPEQ,IdentifierExpression[main$tmp_guard0],CastExpression[ACSLType[_Bool],IntegerLiteral[1]]]]]] [L767] CALL 0 assume_abort_if_not(main$tmp_guard0) [L3] COND FALSE 0 !(!cond) [L767] RET 0 assume_abort_if_not(main$tmp_guard0) [L771] 0 CodeAnnotStmt[Assertion[BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[COMPLEQ,IntegerLiteral[0],IdentifierExpression[__unbuffered_p1_EAX]],BinaryExpression[COMPLEQ,IdentifierExpression[__unbuffered_p1_EAX],IntegerLiteral[1]]],BinaryExpression[COMPEQ,IdentifierExpression[__unbuffered_p0_EAX],IntegerLiteral[1]]],BinaryExpression[LOGICOR,BinaryExpression[COMPEQ,IdentifierExpression[__unbuffered_p1_EAX],IntegerLiteral[0]],BinaryExpression[COMPEQ,IdentifierExpression[__unbuffered_p1_EAX],IntegerLiteral[1]]]]]] VAL [__unbuffered_cnt=2, __unbuffered_p0_EAX=0, __unbuffered_p1_EAX=0, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, main$tmp_guard0=1, main$tmp_guard1=0, t1925={5:0}, t1926={3:0}, x=1, y=1] - 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: 723]: Unable to prove that invariant of correctness witness holds Unable to prove that invariant of correctness witness holds 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. - UnprovableResult [Line: 730]: Unable to prove that invariant of correctness witness holds Unable to prove that invariant of correctness witness holds Reason: Not analyzed. - UnprovableResult [Line: 731]: Unable to prove that invariant of correctness witness holds Unable to prove that invariant of correctness witness holds Reason: Not analyzed. - UnprovableResult [Line: 737]: Unable to prove that invariant of correctness witness holds Unable to prove that invariant of correctness witness holds Reason: Not analyzed. - 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: 741]: Unable to prove that invariant of correctness witness holds Unable to prove that invariant of correctness witness holds Reason: Not analyzed. - UnprovableResult [Line: 745]: Unable to prove that invariant of correctness witness holds Unable to prove that invariant of correctness witness holds Reason: Not analyzed. - UnprovableResult [Line: 746]: Unable to prove that invariant of correctness witness holds Unable to prove that invariant of correctness witness holds Reason: Not analyzed. - UnprovableResult [Line: 765]: Unable to prove that invariant of correctness witness holds Unable to prove that invariant of correctness witness holds Reason: Not analyzed. - UnprovableResult [Line: 766]: Unable to prove that invariant of correctness witness holds Unable to prove that invariant of correctness witness holds Reason: Not analyzed. - UnprovableResult [Line: 767]: Unable to prove that invariant of correctness witness holds Unable to prove that invariant of correctness witness holds Reason: Not analyzed. - UnprovableResult [Line: 772]: Unable to prove that invariant of correctness witness holds Unable to prove that invariant of correctness witness holds Reason: Not analyzed. - UnprovableResult [Line: 773]: Unable to prove that invariant of correctness witness holds Unable to prove that invariant of correctness witness holds Reason: Not analyzed. - UnprovableResult [Line: 18]: Unable to prove that invariant of correctness witness holds Unable to prove that invariant of correctness witness holds Reason: Not analyzed. - UnprovableResult [Line: 18]: 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: 763]: 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: 761]: 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. - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 5 procedures, 73 locations, 30 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: 2.0s, OverallIterations: 10, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 1.2s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.1s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 188 SdHoareTripleChecker+Valid, 0.4s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 185 mSDsluCounter, 6 SdHoareTripleChecker+Invalid, 0.3s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 4 mSDsCounter, 21 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 412 IncrementalHoareTripleChecker+Invalid, 433 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 21 mSolverCounterUnsat, 2 mSDtfsCounter, 412 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 21 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=115occurred in iteration=7, InterpolantAutomatonStates: 30, 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, 0.4s InterpolantComputationTime, 94 NumberOfCodeBlocks, 94 NumberOfCodeBlocksAsserted, 10 NumberOfCheckSat, 66 ConstructedInterpolants, 0 QuantifiedInterpolants, 158 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 9 InterpolantComputations, 9 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 14:24:17,715 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Writing human readable error path to file UltimateCounterExample.errorpath Result: FALSE