./Ultimate.py --spec ../../../trunk/examples/svcomp/properties/unreach-call.prp --file ../../../trunk/examples/svcomp/goblint-regression/13-privatized_04-priv_multi_true.i --full-output --witness-type correctness_witness --witnessparser.only.consider.loop.invariants false --cacsl2boogietranslator.check.unreachability.of.reach_error.function false --validate ./goblint.2024-05-21_14-57-05.files/protection/13-privatized_04-priv_multi_true.yml/witness.yml --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version cde23df1 Calling Ultimate with: /root/.sdkman/candidates/java/current/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReachWitnessValidation.xml -i ../../../trunk/examples/svcomp/goblint-regression/13-privatized_04-priv_multi_true.i ./goblint.2024-05-21_14-57-05.files/protection/13-privatized_04-priv_multi_true.yml/witness.yml -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --traceabstraction.compute.hoare.annotation.of.negated.interpolant.automaton,.abstraction.and.cfg false --witnessparser.only.consider.loop.invariants false --cacsl2boogietranslator.check.unreachability.of.reach_error.function false --- Real Ultimate output --- This is Ultimate 0.2.4-tmp.fs.goblint-validation-cde23df-m [2024-06-14 11:42:14,156 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-06-14 11:42:14,223 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-06-14 11:42:14,228 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-06-14 11:42:14,228 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-06-14 11:42:14,254 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-06-14 11:42:14,255 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-06-14 11:42:14,255 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-06-14 11:42:14,256 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-06-14 11:42:14,259 INFO L153 SettingsManager]: * Use memory slicer=true [2024-06-14 11:42:14,260 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-06-14 11:42:14,260 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-06-14 11:42:14,261 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-06-14 11:42:14,262 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-06-14 11:42:14,263 INFO L153 SettingsManager]: * Use SBE=true [2024-06-14 11:42:14,263 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-06-14 11:42:14,263 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-06-14 11:42:14,263 INFO L153 SettingsManager]: * sizeof long=4 [2024-06-14 11:42:14,264 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-06-14 11:42:14,264 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-06-14 11:42:14,264 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-06-14 11:42:14,265 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-06-14 11:42:14,265 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-06-14 11:42:14,265 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-06-14 11:42:14,266 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-06-14 11:42:14,266 INFO L153 SettingsManager]: * sizeof long double=12 [2024-06-14 11:42:14,266 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-06-14 11:42:14,266 INFO L153 SettingsManager]: * Use constant arrays=true [2024-06-14 11:42:14,267 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-06-14 11:42:14,267 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-06-14 11:42:14,268 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-06-14 11:42:14,269 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-06-14 11:42:14,269 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-06-14 11:42:14,269 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-06-14 11:42:14,270 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-06-14 11:42:14,270 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-06-14 11:42:14,270 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-06-14 11:42:14,270 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-06-14 11:42:14,270 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-06-14 11:42:14,271 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-06-14 11:42:14,271 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2024-06-14 11:42:14,271 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-06-14 11:42:14,272 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-06-14 11:42:14,272 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessparser: Only consider loop invariants -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Check unreachability of reach_error function -> false [2024-06-14 11:42:14,488 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-06-14 11:42:14,507 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-06-14 11:42:14,509 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-06-14 11:42:14,510 INFO L270 PluginConnector]: Initializing CDTParser... [2024-06-14 11:42:14,510 INFO L274 PluginConnector]: CDTParser initialized [2024-06-14 11:42:14,511 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/goblint-regression/13-privatized_04-priv_multi_true.i [2024-06-14 11:42:15,583 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-06-14 11:42:15,792 INFO L384 CDTParser]: Found 1 translation units. [2024-06-14 11:42:15,793 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/goblint-regression/13-privatized_04-priv_multi_true.i [2024-06-14 11:42:15,804 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/93ab81c3a/eb45ee3453ed410db4574a92b314b2ba/FLAGb00c24e11 [2024-06-14 11:42:15,818 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/93ab81c3a/eb45ee3453ed410db4574a92b314b2ba [2024-06-14 11:42:15,821 INFO L270 PluginConnector]: Initializing Witness Parser... [2024-06-14 11:42:15,821 INFO L274 PluginConnector]: Witness Parser initialized [2024-06-14 11:42:15,823 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/./goblint.2024-05-21_14-57-05.files/protection/13-privatized_04-priv_multi_true.yml/witness.yml [2024-06-14 11:42:15,928 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-06-14 11:42:15,929 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2024-06-14 11:42:15,930 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-06-14 11:42:15,930 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-06-14 11:42:15,934 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-06-14 11:42:15,934 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.06 11:42:15" (1/2) ... [2024-06-14 11:42:15,935 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@99d0266 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.06 11:42:15, skipping insertion in model container [2024-06-14 11:42:15,935 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.06 11:42:15" (1/2) ... [2024-06-14 11:42:15,936 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@3b92053f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.06 11:42:15, skipping insertion in model container [2024-06-14 11:42:15,937 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 14.06 11:42:15" (2/2) ... [2024-06-14 11:42:15,937 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@99d0266 and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 14.06 11:42:15, skipping insertion in model container [2024-06-14 11:42:15,937 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 14.06 11:42:15" (2/2) ... [2024-06-14 11:42:15,937 INFO L83 nessWitnessExtractor]: Extracting all invariants from correctness witness [2024-06-14 11:42:16,012 INFO L95 edCorrectnessWitness]: Found the following entries in the witness: [2024-06-14 11:42:16,013 INFO L97 edCorrectnessWitness]: Location invariant before [L1204-L1204] (((! multithreaded || (((((0 <= B && 5 <= B) && B <= 6) && B <= 127) && B != 0) && (B == 5 || B == 6))) && (! multithreaded || (mutex_B_locked || (mutex_A_locked || B == 5)))) && (! multithreaded || (mutex_A_locked || A == 5))) && (! multithreaded || (1 <= A && A <= 100)) [2024-06-14 11:42:16,014 INFO L97 edCorrectnessWitness]: Location invariant before [L1205-L1212] (((! multithreaded || (((((0 <= B && 5 <= B) && B <= 6) && B <= 127) && B != 0) && (B == 5 || B == 6))) && (! multithreaded || (mutex_B_locked || (mutex_A_locked || B == 5)))) && (! multithreaded || (mutex_A_locked || A == 5))) && (! multithreaded || (1 <= A && A <= 100)) [2024-06-14 11:42:16,014 INFO L97 edCorrectnessWitness]: Location invariant before [L1203-L1203] (((! multithreaded || (((((0 <= B && 5 <= B) && B <= 6) && B <= 127) && B != 0) && (B == 5 || B == 6))) && (! multithreaded || (mutex_B_locked || (mutex_A_locked || B == 5)))) && (! multithreaded || (mutex_A_locked || A == 5))) && (! multithreaded || (1 <= A && A <= 100)) [2024-06-14 11:42:16,014 INFO L103 edCorrectnessWitness]: ghost_variable multithreaded = 0 [2024-06-14 11:42:16,014 INFO L103 edCorrectnessWitness]: ghost_variable mutex_A_locked = 0 [2024-06-14 11:42:16,015 INFO L103 edCorrectnessWitness]: ghost_variable mutex_B_locked = 0 [2024-06-14 11:42:16,015 INFO L106 edCorrectnessWitness]: ghost_update [L1209-L1209] mutex_B_locked = 0; [2024-06-14 11:42:16,015 INFO L106 edCorrectnessWitness]: ghost_update [L1168-L1168] mutex_A_locked = 1; [2024-06-14 11:42:16,015 INFO L106 edCorrectnessWitness]: ghost_update [L1158-L1158] mutex_A_locked = 1; [2024-06-14 11:42:16,016 INFO L106 edCorrectnessWitness]: ghost_update [L1187-L1187] mutex_B_locked = 1; [2024-06-14 11:42:16,016 INFO L106 edCorrectnessWitness]: ghost_update [L1174-L1174] mutex_B_locked = 0; [2024-06-14 11:42:16,016 INFO L106 edCorrectnessWitness]: ghost_update [L1206-L1206] mutex_A_locked = 1; [2024-06-14 11:42:16,016 INFO L106 edCorrectnessWitness]: ghost_update [L1176-L1176] mutex_A_locked = 0; [2024-06-14 11:42:16,016 INFO L106 edCorrectnessWitness]: ghost_update [L1190-L1190] mutex_B_locked = 0; [2024-06-14 11:42:16,016 INFO L106 edCorrectnessWitness]: ghost_update [L1202-L1202] multithreaded = 1; [2024-06-14 11:42:16,016 INFO L106 edCorrectnessWitness]: ghost_update [L1161-L1161] mutex_A_locked = 0; [2024-06-14 11:42:16,017 INFO L106 edCorrectnessWitness]: ghost_update [L1210-L1210] mutex_A_locked = 0; [2024-06-14 11:42:16,017 INFO L106 edCorrectnessWitness]: ghost_update [L1171-L1171] mutex_B_locked = 1; [2024-06-14 11:42:16,017 INFO L106 edCorrectnessWitness]: ghost_update [L1207-L1207] mutex_B_locked = 1; [2024-06-14 11:42:16,053 INFO L177 MainTranslator]: Built tables and reachable declarations [2024-06-14 11:42:16,424 INFO L207 PostProcessor]: Analyzing one entry point: main [2024-06-14 11:42:16,435 INFO L202 MainTranslator]: Completed pre-run Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local [2024-06-14 11:42:16,527 INFO L207 PostProcessor]: Analyzing one entry point: main [2024-06-14 11:42:16,574 INFO L206 MainTranslator]: Completed translation [2024-06-14 11:42:16,574 INFO L201 PluginConnector]: Adding new model witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 14.06 11:42:16 WrapperNode [2024-06-14 11:42:16,574 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-06-14 11:42:16,575 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-06-14 11:42:16,575 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-06-14 11:42:16,575 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-06-14 11:42:16,587 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 14.06 11:42:16" (1/1) ... [2024-06-14 11:42:16,600 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 14.06 11:42:16" (1/1) ... [2024-06-14 11:42:16,617 INFO L138 Inliner]: procedures = 271, calls = 38, calls flagged for inlining = 5, calls inlined = 6, statements flattened = 118 [2024-06-14 11:42:16,618 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-06-14 11:42:16,618 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-06-14 11:42:16,618 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-06-14 11:42:16,618 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-06-14 11:42:16,627 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 14.06 11:42:16" (1/1) ... [2024-06-14 11:42:16,627 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 14.06 11:42:16" (1/1) ... [2024-06-14 11:42:16,630 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 14.06 11:42:16" (1/1) ... [2024-06-14 11:42:16,646 INFO L175 MemorySlicer]: Split 12 memory accesses to 3 slices as follows [2, 5, 5]. 42 percent of accesses are in the largest equivalence class. The 12 initializations are split as follows [2, 5, 5]. The 0 writes are split as follows [0, 0, 0]. [2024-06-14 11:42:16,646 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 14.06 11:42:16" (1/1) ... [2024-06-14 11:42:16,646 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 14.06 11:42:16" (1/1) ... [2024-06-14 11:42:16,655 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 14.06 11:42:16" (1/1) ... [2024-06-14 11:42:16,658 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 14.06 11:42:16" (1/1) ... [2024-06-14 11:42:16,660 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 14.06 11:42:16" (1/1) ... [2024-06-14 11:42:16,662 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 14.06 11:42:16" (1/1) ... [2024-06-14 11:42:16,666 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-06-14 11:42:16,667 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-06-14 11:42:16,667 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-06-14 11:42:16,667 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-06-14 11:42:16,667 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 14.06 11:42:16" (1/1) ... [2024-06-14 11:42:16,671 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-06-14 11:42:16,677 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-06-14 11:42:16,707 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-06-14 11:42:16,719 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-06-14 11:42:16,742 INFO L130 BoogieDeclarations]: Found specification of procedure generate [2024-06-14 11:42:16,742 INFO L138 BoogieDeclarations]: Found implementation of procedure generate [2024-06-14 11:42:16,744 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexUnlock [2024-06-14 11:42:16,744 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2024-06-14 11:42:16,745 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-06-14 11:42:16,745 INFO L130 BoogieDeclarations]: Found specification of procedure dispose [2024-06-14 11:42:16,745 INFO L138 BoogieDeclarations]: Found implementation of procedure dispose [2024-06-14 11:42:16,745 INFO L130 BoogieDeclarations]: Found specification of procedure process [2024-06-14 11:42:16,746 INFO L138 BoogieDeclarations]: Found implementation of procedure process [2024-06-14 11:42:16,746 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-06-14 11:42:16,746 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-06-14 11:42:16,746 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2024-06-14 11:42:16,746 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-06-14 11:42:16,746 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-06-14 11:42:16,748 WARN L214 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2024-06-14 11:42:16,997 INFO L244 CfgBuilder]: Building ICFG [2024-06-14 11:42:16,999 INFO L270 CfgBuilder]: Building CFG for each procedure with an implementation [2024-06-14 11:42:17,174 INFO L289 CfgBuilder]: Ommited future-live optimization because the input is a concurrent program. [2024-06-14 11:42:17,175 INFO L293 CfgBuilder]: Performing block encoding [2024-06-14 11:42:17,286 INFO L315 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-06-14 11:42:17,286 INFO L320 CfgBuilder]: Removed 4 assume(true) statements. [2024-06-14 11:42:17,287 INFO L201 PluginConnector]: Adding new model witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.06 11:42:17 BoogieIcfgContainer [2024-06-14 11:42:17,287 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-06-14 11:42:17,322 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-06-14 11:42:17,323 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-06-14 11:42:17,326 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-06-14 11:42:17,326 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 14.06 11:42:15" (1/4) ... [2024-06-14 11:42:17,327 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6903f74c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.06 11:42:17, skipping insertion in model container [2024-06-14 11:42:17,327 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 14.06 11:42:15" (2/4) ... [2024-06-14 11:42:17,327 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6903f74c and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CORRECTNESS_WITNESS 14.06 11:42:17, skipping insertion in model container [2024-06-14 11:42:17,327 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 14.06 11:42:16" (3/4) ... [2024-06-14 11:42:17,327 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6903f74c and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CORRECTNESS_WITNESS 14.06 11:42:17, skipping insertion in model container [2024-06-14 11:42:17,328 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.06 11:42:17" (4/4) ... [2024-06-14 11:42:17,329 INFO L112 eAbstractionObserver]: Analyzing ICFG 13-privatized_04-priv_multi_true.i [2024-06-14 11:42:17,345 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-06-14 11:42:17,345 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 3 error locations. [2024-06-14 11:42:17,346 INFO L522 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-06-14 11:42:17,380 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2024-06-14 11:42:17,406 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 65 places, 61 transitions, 134 flow [2024-06-14 11:42:17,430 INFO L124 PetriNetUnfolderBase]: 6/58 cut-off events. [2024-06-14 11:42:17,430 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-06-14 11:42:17,433 INFO L83 FinitePrefix]: Finished finitePrefix Result has 68 conditions, 58 events. 6/58 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 129 event pairs, 0 based on Foata normal form. 0/49 useless extension candidates. Maximal degree in co-relation 58. Up to 2 conditions per place. [2024-06-14 11:42:17,433 INFO L82 GeneralOperation]: Start removeDead. Operand has 65 places, 61 transitions, 134 flow [2024-06-14 11:42:17,436 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 62 places, 58 transitions, 125 flow [2024-06-14 11:42:17,444 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-06-14 11:42:17,479 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;@feba612, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-06-14 11:42:17,479 INFO L358 AbstractCegarLoop]: Starting to check reachability of 6 error locations. [2024-06-14 11:42:17,483 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-06-14 11:42:17,483 INFO L124 PetriNetUnfolderBase]: 0/6 cut-off events. [2024-06-14 11:42:17,483 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-06-14 11:42:17,483 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 11:42:17,484 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1] [2024-06-14 11:42:17,484 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-14 11:42:17,488 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 11:42:17,488 INFO L85 PathProgramCache]: Analyzing trace with hash 114519251, now seen corresponding path program 1 times [2024-06-14 11:42:17,495 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 11:42:17,496 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [476122887] [2024-06-14 11:42:17,496 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 11:42:17,496 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 11:42:17,669 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 11:42:17,862 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 11:42:17,863 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 11:42:17,863 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [476122887] [2024-06-14 11:42:17,864 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [476122887] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 11:42:17,864 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 11:42:17,864 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-06-14 11:42:17,865 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [214040105] [2024-06-14 11:42:17,866 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 11:42:17,872 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-06-14 11:42:17,876 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 11:42:17,900 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-06-14 11:42:17,900 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-06-14 11:42:17,915 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 61 [2024-06-14 11:42:17,917 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 62 places, 58 transitions, 125 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) [2024-06-14 11:42:17,917 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 11:42:17,917 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 61 [2024-06-14 11:42:17,918 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 11:42:19,400 INFO L124 PetriNetUnfolderBase]: 13699/19841 cut-off events. [2024-06-14 11:42:19,401 INFO L125 PetriNetUnfolderBase]: For 50/50 co-relation queries the response was YES. [2024-06-14 11:42:19,438 INFO L83 FinitePrefix]: Finished finitePrefix Result has 37492 conditions, 19841 events. 13699/19841 cut-off events. For 50/50 co-relation queries the response was YES. Maximal size of possible extension queue 550. Compared 118145 event pairs, 2656 based on Foata normal form. 1429/19849 useless extension candidates. Maximal degree in co-relation 37477. Up to 15223 conditions per place. [2024-06-14 11:42:19,473 INFO L140 encePairwiseOnDemand]: 52/61 looper letters, 52 selfloop transitions, 2 changer transitions 17/80 dead transitions. [2024-06-14 11:42:19,474 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 61 places, 80 transitions, 308 flow [2024-06-14 11:42:19,475 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-06-14 11:42:19,476 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-06-14 11:42:19,481 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 122 transitions. [2024-06-14 11:42:19,483 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6666666666666666 [2024-06-14 11:42:19,484 INFO L175 Difference]: Start difference. First operand has 62 places, 58 transitions, 125 flow. Second operand 3 states and 122 transitions. [2024-06-14 11:42:19,485 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 61 places, 80 transitions, 308 flow [2024-06-14 11:42:19,488 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 58 places, 80 transitions, 304 flow, removed 0 selfloop flow, removed 3 redundant places. [2024-06-14 11:42:19,553 INFO L231 Difference]: Finished difference. Result has 59 places, 46 transitions, 114 flow [2024-06-14 11:42:19,555 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=61, PETRI_DIFFERENCE_MINUEND_FLOW=116, PETRI_DIFFERENCE_MINUEND_PLACES=56, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=55, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=53, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=114, PETRI_PLACES=59, PETRI_TRANSITIONS=46} [2024-06-14 11:42:19,557 INFO L281 CegarLoopForPetriNet]: 62 programPoint places, -3 predicate places. [2024-06-14 11:42:19,557 INFO L495 AbstractCegarLoop]: Abstraction has has 59 places, 46 transitions, 114 flow [2024-06-14 11:42:19,557 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) [2024-06-14 11:42:19,558 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 11:42:19,558 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 11:42:19,558 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-06-14 11:42:19,558 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-14 11:42:19,558 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 11:42:19,558 INFO L85 PathProgramCache]: Analyzing trace with hash 193043477, now seen corresponding path program 1 times [2024-06-14 11:42:19,558 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 11:42:19,559 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [663690173] [2024-06-14 11:42:19,559 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 11:42:19,559 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 11:42:19,581 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 11:42:19,770 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 11:42:19,771 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 11:42:19,771 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [663690173] [2024-06-14 11:42:19,771 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [663690173] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 11:42:19,771 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 11:42:19,771 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-06-14 11:42:19,771 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1144557992] [2024-06-14 11:42:19,772 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 11:42:19,772 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-06-14 11:42:19,773 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 11:42:19,773 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-06-14 11:42:19,773 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-06-14 11:42:19,780 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 61 [2024-06-14 11:42:19,780 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 59 places, 46 transitions, 114 flow. Second operand has 6 states, 6 states have (on average 16.833333333333332) internal successors, (101), 6 states have internal predecessors, (101), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:42:19,781 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 11:42:19,781 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 61 [2024-06-14 11:42:19,781 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 11:42:20,924 INFO L124 PetriNetUnfolderBase]: 8998/13855 cut-off events. [2024-06-14 11:42:20,926 INFO L125 PetriNetUnfolderBase]: For 1547/1547 co-relation queries the response was YES. [2024-06-14 11:42:20,942 INFO L83 FinitePrefix]: Finished finitePrefix Result has 27814 conditions, 13855 events. 8998/13855 cut-off events. For 1547/1547 co-relation queries the response was YES. Maximal size of possible extension queue 436. Compared 84072 event pairs, 884 based on Foata normal form. 710/14325 useless extension candidates. Maximal degree in co-relation 27799. Up to 6574 conditions per place. [2024-06-14 11:42:20,983 INFO L140 encePairwiseOnDemand]: 47/61 looper letters, 118 selfloop transitions, 19 changer transitions 0/146 dead transitions. [2024-06-14 11:42:20,983 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 56 places, 146 transitions, 605 flow [2024-06-14 11:42:20,983 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-14 11:42:20,984 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-14 11:42:20,988 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 252 transitions. [2024-06-14 11:42:20,991 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5901639344262295 [2024-06-14 11:42:20,991 INFO L175 Difference]: Start difference. First operand has 59 places, 46 transitions, 114 flow. Second operand 7 states and 252 transitions. [2024-06-14 11:42:20,991 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 56 places, 146 transitions, 605 flow [2024-06-14 11:42:20,992 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 55 places, 146 transitions, 602 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-06-14 11:42:20,993 INFO L231 Difference]: Finished difference. Result has 59 places, 63 transitions, 257 flow [2024-06-14 11:42:20,993 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=61, PETRI_DIFFERENCE_MINUEND_FLOW=112, PETRI_DIFFERENCE_MINUEND_PLACES=49, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=46, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=35, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=257, PETRI_PLACES=59, PETRI_TRANSITIONS=63} [2024-06-14 11:42:20,994 INFO L281 CegarLoopForPetriNet]: 62 programPoint places, -3 predicate places. [2024-06-14 11:42:20,994 INFO L495 AbstractCegarLoop]: Abstraction has has 59 places, 63 transitions, 257 flow [2024-06-14 11:42:20,994 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 16.833333333333332) internal successors, (101), 6 states have internal predecessors, (101), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:42:20,994 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 11:42:20,995 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 11:42:20,995 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-06-14 11:42:20,995 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-14 11:42:20,995 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 11:42:20,995 INFO L85 PathProgramCache]: Analyzing trace with hash -1380195109, now seen corresponding path program 1 times [2024-06-14 11:42:20,995 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 11:42:20,996 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1446936438] [2024-06-14 11:42:20,996 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 11:42:20,996 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 11:42:21,010 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 11:42:21,073 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 11:42:21,073 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 11:42:21,073 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1446936438] [2024-06-14 11:42:21,074 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1446936438] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 11:42:21,074 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 11:42:21,074 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-06-14 11:42:21,075 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [452635936] [2024-06-14 11:42:21,075 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 11:42:21,076 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-06-14 11:42:21,076 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 11:42:21,077 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-06-14 11:42:21,077 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-06-14 11:42:21,077 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 20 out of 61 [2024-06-14 11:42:21,077 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 59 places, 63 transitions, 257 flow. Second operand has 3 states, 3 states have (on average 24.0) internal successors, (72), 3 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:42:21,077 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 11:42:21,078 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 20 of 61 [2024-06-14 11:42:21,078 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 11:42:22,224 INFO L124 PetriNetUnfolderBase]: 10722/17260 cut-off events. [2024-06-14 11:42:22,225 INFO L125 PetriNetUnfolderBase]: For 12437/13363 co-relation queries the response was YES. [2024-06-14 11:42:22,254 INFO L83 FinitePrefix]: Finished finitePrefix Result has 42906 conditions, 17260 events. 10722/17260 cut-off events. For 12437/13363 co-relation queries the response was YES. Maximal size of possible extension queue 611. Compared 117407 event pairs, 3439 based on Foata normal form. 393/17195 useless extension candidates. Maximal degree in co-relation 42884. Up to 9235 conditions per place. [2024-06-14 11:42:22,411 INFO L140 encePairwiseOnDemand]: 53/61 looper letters, 70 selfloop transitions, 16 changer transitions 0/99 dead transitions. [2024-06-14 11:42:22,411 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 61 places, 99 transitions, 556 flow [2024-06-14 11:42:22,412 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-06-14 11:42:22,412 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-06-14 11:42:22,413 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 120 transitions. [2024-06-14 11:42:22,414 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6557377049180327 [2024-06-14 11:42:22,414 INFO L175 Difference]: Start difference. First operand has 59 places, 63 transitions, 257 flow. Second operand 3 states and 120 transitions. [2024-06-14 11:42:22,414 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 61 places, 99 transitions, 556 flow [2024-06-14 11:42:22,431 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 60 places, 99 transitions, 552 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-06-14 11:42:22,433 INFO L231 Difference]: Finished difference. Result has 61 places, 73 transitions, 358 flow [2024-06-14 11:42:22,433 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=61, PETRI_DIFFERENCE_MINUEND_FLOW=254, PETRI_DIFFERENCE_MINUEND_PLACES=58, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=63, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=47, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=358, PETRI_PLACES=61, PETRI_TRANSITIONS=73} [2024-06-14 11:42:22,434 INFO L281 CegarLoopForPetriNet]: 62 programPoint places, -1 predicate places. [2024-06-14 11:42:22,435 INFO L495 AbstractCegarLoop]: Abstraction has has 61 places, 73 transitions, 358 flow [2024-06-14 11:42:22,435 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 24.0) internal successors, (72), 3 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:42:22,435 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 11:42:22,435 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 11:42:22,435 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-06-14 11:42:22,435 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-14 11:42:22,436 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 11:42:22,436 INFO L85 PathProgramCache]: Analyzing trace with hash 2059427618, now seen corresponding path program 1 times [2024-06-14 11:42:22,436 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 11:42:22,437 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1102993556] [2024-06-14 11:42:22,437 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 11:42:22,437 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 11:42:22,475 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 11:42:22,810 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 11:42:22,810 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 11:42:22,811 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1102993556] [2024-06-14 11:42:22,811 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1102993556] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 11:42:22,811 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 11:42:22,811 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-14 11:42:22,811 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1664058930] [2024-06-14 11:42:22,811 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 11:42:22,812 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-14 11:42:22,812 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 11:42:22,813 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-14 11:42:22,813 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2024-06-14 11:42:22,835 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 61 [2024-06-14 11:42:22,836 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 61 places, 73 transitions, 358 flow. Second operand has 7 states, 7 states have (on average 17.285714285714285) internal successors, (121), 7 states have internal predecessors, (121), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:42:22,836 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 11:42:22,836 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 61 [2024-06-14 11:42:22,836 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 11:42:25,947 INFO L124 PetriNetUnfolderBase]: 24075/36394 cut-off events. [2024-06-14 11:42:25,948 INFO L125 PetriNetUnfolderBase]: For 52557/53128 co-relation queries the response was YES. [2024-06-14 11:42:26,045 INFO L83 FinitePrefix]: Finished finitePrefix Result has 109255 conditions, 36394 events. 24075/36394 cut-off events. For 52557/53128 co-relation queries the response was YES. Maximal size of possible extension queue 1120. Compared 252021 event pairs, 5352 based on Foata normal form. 147/36009 useless extension candidates. Maximal degree in co-relation 109232. Up to 10693 conditions per place. [2024-06-14 11:42:26,267 INFO L140 encePairwiseOnDemand]: 50/61 looper letters, 176 selfloop transitions, 23 changer transitions 0/208 dead transitions. [2024-06-14 11:42:26,280 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 67 places, 208 transitions, 1358 flow [2024-06-14 11:42:26,281 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-14 11:42:26,281 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-14 11:42:26,282 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 257 transitions. [2024-06-14 11:42:26,282 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6018735362997658 [2024-06-14 11:42:26,282 INFO L175 Difference]: Start difference. First operand has 61 places, 73 transitions, 358 flow. Second operand 7 states and 257 transitions. [2024-06-14 11:42:26,282 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 67 places, 208 transitions, 1358 flow [2024-06-14 11:42:26,309 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 66 places, 208 transitions, 1313 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-06-14 11:42:26,312 INFO L231 Difference]: Finished difference. Result has 71 places, 88 transitions, 530 flow [2024-06-14 11:42:26,312 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=61, PETRI_DIFFERENCE_MINUEND_FLOW=342, PETRI_DIFFERENCE_MINUEND_PLACES=60, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=73, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=58, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=530, PETRI_PLACES=71, PETRI_TRANSITIONS=88} [2024-06-14 11:42:26,314 INFO L281 CegarLoopForPetriNet]: 62 programPoint places, 9 predicate places. [2024-06-14 11:42:26,314 INFO L495 AbstractCegarLoop]: Abstraction has has 71 places, 88 transitions, 530 flow [2024-06-14 11:42:26,314 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 17.285714285714285) internal successors, (121), 7 states have internal predecessors, (121), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:42:26,314 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 11:42:26,314 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 11:42:26,314 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-06-14 11:42:26,315 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-14 11:42:26,315 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 11:42:26,315 INFO L85 PathProgramCache]: Analyzing trace with hash -536015514, now seen corresponding path program 1 times [2024-06-14 11:42:26,315 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 11:42:26,316 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2521034] [2024-06-14 11:42:26,316 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 11:42:26,316 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 11:42:26,333 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 11:42:26,495 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 11:42:26,496 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 11:42:26,496 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2521034] [2024-06-14 11:42:26,496 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2521034] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 11:42:26,496 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 11:42:26,496 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-06-14 11:42:26,496 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1528577180] [2024-06-14 11:42:26,496 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 11:42:26,497 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-06-14 11:42:26,497 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 11:42:26,497 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-06-14 11:42:26,498 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-06-14 11:42:26,511 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 61 [2024-06-14 11:42:26,511 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 71 places, 88 transitions, 530 flow. Second operand has 6 states, 6 states have (on average 17.833333333333332) internal successors, (107), 6 states have internal predecessors, (107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:42:26,511 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 11:42:26,512 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 61 [2024-06-14 11:42:26,512 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 11:42:31,537 INFO L124 PetriNetUnfolderBase]: 38501/58873 cut-off events. [2024-06-14 11:42:31,537 INFO L125 PetriNetUnfolderBase]: For 150938/151840 co-relation queries the response was YES. [2024-06-14 11:42:31,770 INFO L83 FinitePrefix]: Finished finitePrefix Result has 186138 conditions, 58873 events. 38501/58873 cut-off events. For 150938/151840 co-relation queries the response was YES. Maximal size of possible extension queue 1250. Compared 424706 event pairs, 9021 based on Foata normal form. 2326/60719 useless extension candidates. Maximal degree in co-relation 186107. Up to 17293 conditions per place. [2024-06-14 11:42:31,947 INFO L140 encePairwiseOnDemand]: 52/61 looper letters, 191 selfloop transitions, 32 changer transitions 1/233 dead transitions. [2024-06-14 11:42:31,947 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 77 places, 233 transitions, 1671 flow [2024-06-14 11:42:31,947 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-14 11:42:31,948 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-14 11:42:31,948 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 267 transitions. [2024-06-14 11:42:31,949 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6252927400468384 [2024-06-14 11:42:31,950 INFO L175 Difference]: Start difference. First operand has 71 places, 88 transitions, 530 flow. Second operand 7 states and 267 transitions. [2024-06-14 11:42:31,951 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 77 places, 233 transitions, 1671 flow [2024-06-14 11:42:32,177 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 77 places, 233 transitions, 1665 flow, removed 3 selfloop flow, removed 0 redundant places. [2024-06-14 11:42:32,181 INFO L231 Difference]: Finished difference. Result has 81 places, 100 transitions, 752 flow [2024-06-14 11:42:32,181 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=61, PETRI_DIFFERENCE_MINUEND_FLOW=524, PETRI_DIFFERENCE_MINUEND_PLACES=71, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=88, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=21, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=64, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=752, PETRI_PLACES=81, PETRI_TRANSITIONS=100} [2024-06-14 11:42:32,182 INFO L281 CegarLoopForPetriNet]: 62 programPoint places, 19 predicate places. [2024-06-14 11:42:32,182 INFO L495 AbstractCegarLoop]: Abstraction has has 81 places, 100 transitions, 752 flow [2024-06-14 11:42:32,182 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 17.833333333333332) internal successors, (107), 6 states have internal predecessors, (107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:42:32,182 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 11:42:32,183 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 11:42:32,183 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-06-14 11:42:32,183 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-14 11:42:32,183 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 11:42:32,184 INFO L85 PathProgramCache]: Analyzing trace with hash -142776618, now seen corresponding path program 1 times [2024-06-14 11:42:32,184 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 11:42:32,184 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [468054544] [2024-06-14 11:42:32,184 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 11:42:32,184 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 11:42:32,205 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 11:42:32,528 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 11:42:32,528 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 11:42:32,529 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [468054544] [2024-06-14 11:42:32,531 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [468054544] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 11:42:32,531 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 11:42:32,532 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-14 11:42:32,532 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [516120138] [2024-06-14 11:42:32,532 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 11:42:32,533 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-14 11:42:32,533 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 11:42:32,533 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-14 11:42:32,533 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2024-06-14 11:42:32,548 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 61 [2024-06-14 11:42:32,549 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 81 places, 100 transitions, 752 flow. Second operand has 9 states, 9 states have (on average 17.0) internal successors, (153), 9 states have internal predecessors, (153), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:42:32,549 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 11:42:32,549 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 61 [2024-06-14 11:42:32,549 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 11:42:40,375 INFO L124 PetriNetUnfolderBase]: 54043/83313 cut-off events. [2024-06-14 11:42:40,375 INFO L125 PetriNetUnfolderBase]: For 270502/271464 co-relation queries the response was YES. [2024-06-14 11:42:40,770 INFO L83 FinitePrefix]: Finished finitePrefix Result has 285546 conditions, 83313 events. 54043/83313 cut-off events. For 270502/271464 co-relation queries the response was YES. Maximal size of possible extension queue 1499. Compared 621228 event pairs, 6683 based on Foata normal form. 650/83566 useless extension candidates. Maximal degree in co-relation 285509. Up to 23011 conditions per place. [2024-06-14 11:42:41,009 INFO L140 encePairwiseOnDemand]: 49/61 looper letters, 241 selfloop transitions, 83 changer transitions 2/335 dead transitions. [2024-06-14 11:42:41,009 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 92 places, 335 transitions, 2663 flow [2024-06-14 11:42:41,010 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-14 11:42:41,010 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-14 11:42:41,011 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 418 transitions. [2024-06-14 11:42:41,011 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5710382513661202 [2024-06-14 11:42:41,011 INFO L175 Difference]: Start difference. First operand has 81 places, 100 transitions, 752 flow. Second operand 12 states and 418 transitions. [2024-06-14 11:42:41,011 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 92 places, 335 transitions, 2663 flow [2024-06-14 11:42:41,865 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 92 places, 335 transitions, 2649 flow, removed 7 selfloop flow, removed 0 redundant places. [2024-06-14 11:42:41,870 INFO L231 Difference]: Finished difference. Result has 100 places, 148 transitions, 1546 flow [2024-06-14 11:42:41,870 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=61, PETRI_DIFFERENCE_MINUEND_FLOW=746, PETRI_DIFFERENCE_MINUEND_PLACES=81, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=100, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=44, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=49, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=1546, PETRI_PLACES=100, PETRI_TRANSITIONS=148} [2024-06-14 11:42:41,871 INFO L281 CegarLoopForPetriNet]: 62 programPoint places, 38 predicate places. [2024-06-14 11:42:41,872 INFO L495 AbstractCegarLoop]: Abstraction has has 100 places, 148 transitions, 1546 flow [2024-06-14 11:42:41,872 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 17.0) internal successors, (153), 9 states have internal predecessors, (153), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:42:41,872 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 11:42:41,872 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 11:42:41,872 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-06-14 11:42:41,873 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-14 11:42:41,873 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 11:42:41,873 INFO L85 PathProgramCache]: Analyzing trace with hash 286813965, now seen corresponding path program 1 times [2024-06-14 11:42:41,873 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 11:42:41,873 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [322259726] [2024-06-14 11:42:42,022 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 11:42:42,022 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 11:42:42,069 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 11:42:42,554 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 11:42:42,555 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 11:42:42,555 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [322259726] [2024-06-14 11:42:42,555 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [322259726] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 11:42:42,555 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 11:42:42,555 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-14 11:42:42,556 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1584178361] [2024-06-14 11:42:42,556 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 11:42:42,556 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-14 11:42:42,556 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 11:42:42,557 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-14 11:42:42,557 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2024-06-14 11:42:42,595 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 61 [2024-06-14 11:42:42,596 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 100 places, 148 transitions, 1546 flow. Second operand has 11 states, 11 states have (on average 16.727272727272727) internal successors, (184), 11 states have internal predecessors, (184), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:42:42,596 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 11:42:42,596 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 61 [2024-06-14 11:42:42,596 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 11:42:54,685 INFO L124 PetriNetUnfolderBase]: 66651/105065 cut-off events. [2024-06-14 11:42:54,686 INFO L125 PetriNetUnfolderBase]: For 576800/579908 co-relation queries the response was YES. [2024-06-14 11:42:55,350 INFO L83 FinitePrefix]: Finished finitePrefix Result has 406584 conditions, 105065 events. 66651/105065 cut-off events. For 576800/579908 co-relation queries the response was YES. Maximal size of possible extension queue 2122. Compared 839884 event pairs, 10326 based on Foata normal form. 1400/105939 useless extension candidates. Maximal degree in co-relation 406536. Up to 69307 conditions per place. [2024-06-14 11:42:55,707 INFO L140 encePairwiseOnDemand]: 46/61 looper letters, 354 selfloop transitions, 94 changer transitions 0/457 dead transitions. [2024-06-14 11:42:55,707 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 116 places, 457 transitions, 4164 flow [2024-06-14 11:42:55,708 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2024-06-14 11:42:55,708 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17 states. [2024-06-14 11:42:55,709 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 580 transitions. [2024-06-14 11:42:55,710 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5593056894889104 [2024-06-14 11:42:55,710 INFO L175 Difference]: Start difference. First operand has 100 places, 148 transitions, 1546 flow. Second operand 17 states and 580 transitions. [2024-06-14 11:42:55,710 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 116 places, 457 transitions, 4164 flow [2024-06-14 11:43:00,362 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 115 places, 457 transitions, 4080 flow, removed 41 selfloop flow, removed 1 redundant places. [2024-06-14 11:43:00,376 INFO L231 Difference]: Finished difference. Result has 125 places, 216 transitions, 2772 flow [2024-06-14 11:43:00,377 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=61, PETRI_DIFFERENCE_MINUEND_FLOW=1335, PETRI_DIFFERENCE_MINUEND_PLACES=99, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=135, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=29, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=74, PETRI_DIFFERENCE_SUBTRAHEND_STATES=17, PETRI_FLOW=2772, PETRI_PLACES=125, PETRI_TRANSITIONS=216} [2024-06-14 11:43:00,378 INFO L281 CegarLoopForPetriNet]: 62 programPoint places, 63 predicate places. [2024-06-14 11:43:00,378 INFO L495 AbstractCegarLoop]: Abstraction has has 125 places, 216 transitions, 2772 flow [2024-06-14 11:43:00,378 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 16.727272727272727) internal successors, (184), 11 states have internal predecessors, (184), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:43:00,378 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 11:43:00,379 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 11:43:00,379 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-06-14 11:43:00,379 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-14 11:43:00,380 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 11:43:00,380 INFO L85 PathProgramCache]: Analyzing trace with hash 161638077, now seen corresponding path program 1 times [2024-06-14 11:43:00,380 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 11:43:00,380 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1022900015] [2024-06-14 11:43:00,380 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 11:43:00,380 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 11:43:00,401 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 11:43:00,562 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 11:43:00,562 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 11:43:00,562 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1022900015] [2024-06-14 11:43:00,562 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1022900015] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 11:43:00,563 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 11:43:00,563 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-06-14 11:43:00,563 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [48607849] [2024-06-14 11:43:00,563 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 11:43:00,563 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-06-14 11:43:00,564 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 11:43:00,564 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-06-14 11:43:00,566 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-06-14 11:43:00,566 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 20 out of 61 [2024-06-14 11:43:00,568 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 125 places, 216 transitions, 2772 flow. Second operand has 5 states, 5 states have (on average 24.4) internal successors, (122), 5 states have internal predecessors, (122), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:43:00,568 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 11:43:00,568 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 20 of 61 [2024-06-14 11:43:00,568 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 11:43:01,447 INFO L124 PetriNetUnfolderBase]: 4390/7060 cut-off events. [2024-06-14 11:43:01,448 INFO L125 PetriNetUnfolderBase]: For 44681/44792 co-relation queries the response was YES. [2024-06-14 11:43:01,487 INFO L83 FinitePrefix]: Finished finitePrefix Result has 26328 conditions, 7060 events. 4390/7060 cut-off events. For 44681/44792 co-relation queries the response was YES. Maximal size of possible extension queue 155. Compared 39219 event pairs, 757 based on Foata normal form. 239/7230 useless extension candidates. Maximal degree in co-relation 26289. Up to 5505 conditions per place. [2024-06-14 11:43:01,493 INFO L140 encePairwiseOnDemand]: 56/61 looper letters, 0 selfloop transitions, 0 changer transitions 69/69 dead transitions. [2024-06-14 11:43:01,494 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 106 places, 69 transitions, 578 flow [2024-06-14 11:43:01,494 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-06-14 11:43:01,494 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-06-14 11:43:01,495 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 128 transitions. [2024-06-14 11:43:01,495 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5245901639344263 [2024-06-14 11:43:01,495 INFO L175 Difference]: Start difference. First operand has 125 places, 216 transitions, 2772 flow. Second operand 4 states and 128 transitions. [2024-06-14 11:43:01,495 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 106 places, 69 transitions, 578 flow [2024-06-14 11:43:01,572 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 74 places, 69 transitions, 401 flow, removed 18 selfloop flow, removed 32 redundant places. [2024-06-14 11:43:01,572 INFO L231 Difference]: Finished difference. Result has 74 places, 0 transitions, 0 flow [2024-06-14 11:43:01,573 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=61, PETRI_DIFFERENCE_MINUEND_FLOW=239, PETRI_DIFFERENCE_MINUEND_PLACES=71, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=53, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=53, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=0, PETRI_PLACES=74, PETRI_TRANSITIONS=0} [2024-06-14 11:43:01,573 INFO L281 CegarLoopForPetriNet]: 62 programPoint places, 12 predicate places. [2024-06-14 11:43:01,573 INFO L495 AbstractCegarLoop]: Abstraction has has 74 places, 0 transitions, 0 flow [2024-06-14 11:43:01,574 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 24.4) internal successors, (122), 5 states have internal predecessors, (122), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:43:01,576 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT (5 of 6 remaining) [2024-06-14 11:43:01,576 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (4 of 6 remaining) [2024-06-14 11:43:01,576 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (3 of 6 remaining) [2024-06-14 11:43:01,576 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (2 of 6 remaining) [2024-06-14 11:43:01,576 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 6 remaining) [2024-06-14 11:43:01,577 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 6 remaining) [2024-06-14 11:43:01,577 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-06-14 11:43:01,577 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 11:43:01,580 INFO L229 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2024-06-14 11:43:01,580 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2024-06-14 11:43:01,584 INFO L507 ceAbstractionStarter]: Automizer considered 3 witness invariants [2024-06-14 11:43:01,584 INFO L508 ceAbstractionStarter]: WitnessConsidered=3 [2024-06-14 11:43:01,585 INFO L201 PluginConnector]: Adding new model witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 14.06 11:43:01 BasicIcfg [2024-06-14 11:43:01,585 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2024-06-14 11:43:01,586 INFO L158 Benchmark]: Toolchain (without parser) took 45656.30ms. Allocated memory was 167.8MB in the beginning and 13.9GB in the end (delta: 13.7GB). Free memory was 89.2MB in the beginning and 11.2GB in the end (delta: -11.1GB). Peak memory consumption was 2.9GB. Max. memory is 16.1GB. [2024-06-14 11:43:01,586 INFO L158 Benchmark]: CDTParser took 0.17ms. Allocated memory is still 167.8MB. Free memory is still 124.9MB. There was no memory consumed. Max. memory is 16.1GB. [2024-06-14 11:43:01,586 INFO L158 Benchmark]: Witness Parser took 0.19ms. Allocated memory is still 167.8MB. Free memory is still 94.1MB. There was no memory consumed. Max. memory is 16.1GB. [2024-06-14 11:43:01,586 INFO L158 Benchmark]: CACSL2BoogieTranslator took 644.46ms. Allocated memory is still 167.8MB. Free memory was 89.0MB in the beginning and 100.7MB in the end (delta: -11.7MB). Peak memory consumption was 9.1MB. Max. memory is 16.1GB. [2024-06-14 11:43:01,587 INFO L158 Benchmark]: Boogie Procedure Inliner took 42.42ms. Allocated memory is still 167.8MB. Free memory was 100.7MB in the beginning and 98.0MB in the end (delta: 2.7MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2024-06-14 11:43:01,587 INFO L158 Benchmark]: Boogie Preprocessor took 47.97ms. Allocated memory is still 167.8MB. Free memory was 98.0MB in the beginning and 94.2MB in the end (delta: 3.8MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2024-06-14 11:43:01,587 INFO L158 Benchmark]: RCFGBuilder took 620.49ms. Allocated memory is still 167.8MB. Free memory was 94.2MB in the beginning and 47.7MB in the end (delta: 46.5MB). Peak memory consumption was 46.1MB. Max. memory is 16.1GB. [2024-06-14 11:43:01,588 INFO L158 Benchmark]: TraceAbstraction took 44263.03ms. Allocated memory was 167.8MB in the beginning and 13.9GB in the end (delta: 13.7GB). Free memory was 132.4MB in the beginning and 11.2GB in the end (delta: -11.1GB). Peak memory consumption was 3.0GB. Max. memory is 16.1GB. [2024-06-14 11:43:01,589 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.17ms. Allocated memory is still 167.8MB. Free memory is still 124.9MB. There was no memory consumed. Max. memory is 16.1GB. * Witness Parser took 0.19ms. Allocated memory is still 167.8MB. Free memory is still 94.1MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 644.46ms. Allocated memory is still 167.8MB. Free memory was 89.0MB in the beginning and 100.7MB in the end (delta: -11.7MB). Peak memory consumption was 9.1MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 42.42ms. Allocated memory is still 167.8MB. Free memory was 100.7MB in the beginning and 98.0MB in the end (delta: 2.7MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 47.97ms. Allocated memory is still 167.8MB. Free memory was 98.0MB in the beginning and 94.2MB in the end (delta: 3.8MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * RCFGBuilder took 620.49ms. Allocated memory is still 167.8MB. Free memory was 94.2MB in the beginning and 47.7MB in the end (delta: 46.5MB). Peak memory consumption was 46.1MB. Max. memory is 16.1GB. * TraceAbstraction took 44263.03ms. Allocated memory was 167.8MB in the beginning and 13.9GB in the end (delta: 13.7GB). Free memory was 132.4MB in the beginning and 11.2GB in the end (delta: -11.1GB). Peak memory consumption was 3.0GB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 1203]: invariant of correctness witness holds For all program executions holds that invariant of correctness witness holds at this location - PositiveResult [Line: 1204]: invariant of correctness witness holds For all program executions holds that invariant of correctness witness holds at this location - PositiveResult [Line: 1205]: invariant of correctness witness holds For all program executions holds that invariant of correctness witness holds at this location - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 7 procedures, 90 locations, 6 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: 44.2s, OverallIterations: 8, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 41.6s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 1048 SdHoareTripleChecker+Valid, 1.7s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 1029 mSDsluCounter, 40 SdHoareTripleChecker+Invalid, 1.3s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 25 mSDsCounter, 155 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 2869 IncrementalHoareTripleChecker+Invalid, 3024 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 155 mSolverCounterUnsat, 15 mSDtfsCounter, 2869 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 57 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 52 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 101 ImplicationChecksByTransitivity, 0.3s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=2772occurred in iteration=7, InterpolantAutomatonStates: 60, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 1.9s InterpolantComputationTime, 152 NumberOfCodeBlocks, 152 NumberOfCodeBlocksAsserted, 8 NumberOfCheckSat, 144 ConstructedInterpolants, 0 QuantifiedInterpolants, 979 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 8 InterpolantComputations, 8 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 3 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2024-06-14 11:43:01,617 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Ended with exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: TRUE