./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.2024-06-19_11-23-25.files/protection/13-privatized_04-priv_multi_true.yml/witness.yml --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version eb4cb34f 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.2024-06-19_11-23-25.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-eb4cb34-m [2024-06-21 16:04:47,581 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-06-21 16:04:47,617 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-06-21 16:04:47,620 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-06-21 16:04:47,621 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-06-21 16:04:47,633 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-06-21 16:04:47,634 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-06-21 16:04:47,634 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-06-21 16:04:47,635 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-06-21 16:04:47,635 INFO L153 SettingsManager]: * Use memory slicer=true [2024-06-21 16:04:47,635 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-06-21 16:04:47,635 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-06-21 16:04:47,636 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-06-21 16:04:47,636 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-06-21 16:04:47,636 INFO L153 SettingsManager]: * Use SBE=true [2024-06-21 16:04:47,637 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-06-21 16:04:47,637 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-06-21 16:04:47,637 INFO L153 SettingsManager]: * sizeof long=4 [2024-06-21 16:04:47,637 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-06-21 16:04:47,638 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-06-21 16:04:47,638 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-06-21 16:04:47,638 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-06-21 16:04:47,638 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-06-21 16:04:47,639 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-06-21 16:04:47,639 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-06-21 16:04:47,640 INFO L153 SettingsManager]: * sizeof long double=12 [2024-06-21 16:04:47,640 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-06-21 16:04:47,641 INFO L153 SettingsManager]: * Use constant arrays=true [2024-06-21 16:04:47,641 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-06-21 16:04:47,641 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-06-21 16:04:47,641 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-06-21 16:04:47,642 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-06-21 16:04:47,642 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-06-21 16:04:47,642 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-06-21 16:04:47,643 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-06-21 16:04:47,643 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-06-21 16:04:47,643 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-06-21 16:04:47,643 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-06-21 16:04:47,644 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-06-21 16:04:47,644 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-06-21 16:04:47,644 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2024-06-21 16:04:47,644 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-06-21 16:04:47,645 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-06-21 16:04:47,645 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessparser: Only consider loop invariants -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Check unreachability of reach_error function -> false [2024-06-21 16:04:47,793 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-06-21 16:04:47,808 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-06-21 16:04:47,810 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-06-21 16:04:47,811 INFO L270 PluginConnector]: Initializing CDTParser... [2024-06-21 16:04:47,812 INFO L274 PluginConnector]: CDTParser initialized [2024-06-21 16:04:47,812 INFO L431 ainManager$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 [2024-06-21 16:04:48,802 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-06-21 16:04:49,034 INFO L384 CDTParser]: Found 1 translation units. [2024-06-21 16:04:49,035 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/goblint-regression/13-privatized_04-priv_multi_true.i [2024-06-21 16:04:49,057 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/5a5696ed4/c3a3b3e18ea04a749565cb351b03366c/FLAG84cef79d9 [2024-06-21 16:04:49,068 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/5a5696ed4/c3a3b3e18ea04a749565cb351b03366c [2024-06-21 16:04:49,070 INFO L270 PluginConnector]: Initializing Witness Parser... [2024-06-21 16:04:49,071 INFO L274 PluginConnector]: Witness Parser initialized [2024-06-21 16:04:49,071 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/./goblint.2024-06-19_11-23-25.files/protection/13-privatized_04-priv_multi_true.yml/witness.yml [2024-06-21 16:04:49,168 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-06-21 16:04:49,174 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2024-06-21 16:04:49,176 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-06-21 16:04:49,176 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-06-21 16:04:49,180 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-06-21 16:04:49,180 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.06 04:04:49" (1/2) ... [2024-06-21 16:04:49,181 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@618084f1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.06 04:04:49, skipping insertion in model container [2024-06-21 16:04:49,182 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.06 04:04:49" (1/2) ... [2024-06-21 16:04:49,184 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@4d36f846 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.06 04:04:49, skipping insertion in model container [2024-06-21 16:04:49,185 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 21.06 04:04:49" (2/2) ... [2024-06-21 16:04:49,185 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@618084f1 and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 21.06 04:04:49, skipping insertion in model container [2024-06-21 16:04:49,185 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 21.06 04:04:49" (2/2) ... [2024-06-21 16:04:49,185 INFO L83 nessWitnessExtractor]: Extracting all invariants from correctness witness [2024-06-21 16:04:49,237 INFO L95 edCorrectnessWitness]: Found the following entries in the witness: [2024-06-21 16:04:49,239 INFO L97 edCorrectnessWitness]: Location invariant before [L1205-L1212] (((! multithreaded || (B == 5 || B == 6)) && (! multithreaded || (mutex_B_locked || (mutex_A_locked || B == 5)))) && (! multithreaded || (mutex_A_locked || A == 5))) && (! multithreaded || (1 <= A && A <= 100)) [2024-06-21 16:04:49,239 INFO L97 edCorrectnessWitness]: Location invariant before [L1203-L1203] (((! multithreaded || (B == 5 || B == 6)) && (! multithreaded || (mutex_B_locked || (mutex_A_locked || B == 5)))) && (! multithreaded || (mutex_A_locked || A == 5))) && (! multithreaded || (1 <= A && A <= 100)) [2024-06-21 16:04:49,239 INFO L97 edCorrectnessWitness]: Location invariant before [L1204-L1204] (((! multithreaded || (B == 5 || B == 6)) && (! multithreaded || (mutex_B_locked || (mutex_A_locked || B == 5)))) && (! multithreaded || (mutex_A_locked || A == 5))) && (! multithreaded || (1 <= A && A <= 100)) [2024-06-21 16:04:49,239 INFO L103 edCorrectnessWitness]: ghost_variable mutex_A_locked = 0 [2024-06-21 16:04:49,239 INFO L103 edCorrectnessWitness]: ghost_variable multithreaded = 0 [2024-06-21 16:04:49,240 INFO L103 edCorrectnessWitness]: ghost_variable mutex_B_locked = 0 [2024-06-21 16:04:49,240 INFO L106 edCorrectnessWitness]: ghost_update [L1190-L1190] mutex_B_locked = 0; [2024-06-21 16:04:49,240 INFO L106 edCorrectnessWitness]: ghost_update [L1176-L1176] mutex_A_locked = 0; [2024-06-21 16:04:49,240 INFO L106 edCorrectnessWitness]: ghost_update [L1187-L1187] mutex_B_locked = 1; [2024-06-21 16:04:49,240 INFO L106 edCorrectnessWitness]: ghost_update [L1168-L1168] mutex_A_locked = 1; [2024-06-21 16:04:49,241 INFO L106 edCorrectnessWitness]: ghost_update [L1174-L1174] mutex_B_locked = 0; [2024-06-21 16:04:49,241 INFO L106 edCorrectnessWitness]: ghost_update [L1158-L1158] mutex_A_locked = 1; [2024-06-21 16:04:49,241 INFO L106 edCorrectnessWitness]: ghost_update [L1161-L1161] mutex_A_locked = 0; [2024-06-21 16:04:49,241 INFO L106 edCorrectnessWitness]: ghost_update [L1207-L1207] mutex_B_locked = 1; [2024-06-21 16:04:49,241 INFO L106 edCorrectnessWitness]: ghost_update [L1206-L1206] mutex_A_locked = 1; [2024-06-21 16:04:49,241 INFO L106 edCorrectnessWitness]: ghost_update [L1171-L1171] mutex_B_locked = 1; [2024-06-21 16:04:49,241 INFO L106 edCorrectnessWitness]: ghost_update [L1210-L1210] mutex_A_locked = 0; [2024-06-21 16:04:49,241 INFO L106 edCorrectnessWitness]: ghost_update [L1202-L1202] multithreaded = 1; [2024-06-21 16:04:49,242 INFO L106 edCorrectnessWitness]: ghost_update [L1209-L1209] mutex_B_locked = 0; [2024-06-21 16:04:49,280 INFO L177 MainTranslator]: Built tables and reachable declarations [2024-06-21 16:04:49,636 INFO L207 PostProcessor]: Analyzing one entry point: main [2024-06-21 16:04:49,647 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 [2024-06-21 16:04:49,763 INFO L207 PostProcessor]: Analyzing one entry point: main [2024-06-21 16:04:49,815 INFO L206 MainTranslator]: Completed translation [2024-06-21 16:04:49,816 INFO L201 PluginConnector]: Adding new model witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 21.06 04:04:49 WrapperNode [2024-06-21 16:04:49,816 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-06-21 16:04:49,817 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-06-21 16:04:49,817 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-06-21 16:04:49,817 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-06-21 16:04:49,822 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 21.06 04:04:49" (1/1) ... [2024-06-21 16:04:49,848 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 21.06 04:04:49" (1/1) ... [2024-06-21 16:04:49,878 INFO L138 Inliner]: procedures = 271, calls = 38, calls flagged for inlining = 5, calls inlined = 6, statements flattened = 118 [2024-06-21 16:04:49,879 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-06-21 16:04:49,880 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-06-21 16:04:49,880 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-06-21 16:04:49,880 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-06-21 16:04:49,888 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 21.06 04:04:49" (1/1) ... [2024-06-21 16:04:49,888 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 21.06 04:04:49" (1/1) ... [2024-06-21 16:04:49,904 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 21.06 04:04:49" (1/1) ... [2024-06-21 16:04:49,924 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]. [2024-06-21 16:04:49,925 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 21.06 04:04:49" (1/1) ... [2024-06-21 16:04:49,925 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 21.06 04:04:49" (1/1) ... [2024-06-21 16:04:49,932 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 21.06 04:04:49" (1/1) ... [2024-06-21 16:04:49,934 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 21.06 04:04:49" (1/1) ... [2024-06-21 16:04:49,936 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 21.06 04:04:49" (1/1) ... [2024-06-21 16:04:49,938 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 21.06 04:04:49" (1/1) ... [2024-06-21 16:04:49,941 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-06-21 16:04:49,942 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-06-21 16:04:49,942 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-06-21 16:04:49,942 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-06-21 16:04:49,943 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 21.06 04:04:49" (1/1) ... [2024-06-21 16:04:49,962 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-06-21 16:04:49,968 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-06-21 16:04:49,978 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) [2024-06-21 16:04:49,980 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 [2024-06-21 16:04:50,001 INFO L130 BoogieDeclarations]: Found specification of procedure generate [2024-06-21 16:04:50,002 INFO L138 BoogieDeclarations]: Found implementation of procedure generate [2024-06-21 16:04:50,002 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexUnlock [2024-06-21 16:04:50,002 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2024-06-21 16:04:50,002 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-06-21 16:04:50,002 INFO L130 BoogieDeclarations]: Found specification of procedure dispose [2024-06-21 16:04:50,002 INFO L138 BoogieDeclarations]: Found implementation of procedure dispose [2024-06-21 16:04:50,002 INFO L130 BoogieDeclarations]: Found specification of procedure process [2024-06-21 16:04:50,003 INFO L138 BoogieDeclarations]: Found implementation of procedure process [2024-06-21 16:04:50,003 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-06-21 16:04:50,003 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-06-21 16:04:50,003 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2024-06-21 16:04:50,003 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-06-21 16:04:50,003 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-06-21 16:04:50,005 WARN L214 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2024-06-21 16:04:50,194 INFO L244 CfgBuilder]: Building ICFG [2024-06-21 16:04:50,196 INFO L270 CfgBuilder]: Building CFG for each procedure with an implementation [2024-06-21 16:04:50,359 INFO L289 CfgBuilder]: Ommited future-live optimization because the input is a concurrent program. [2024-06-21 16:04:50,359 INFO L293 CfgBuilder]: Performing block encoding [2024-06-21 16:04:50,465 INFO L315 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-06-21 16:04:50,465 INFO L320 CfgBuilder]: Removed 4 assume(true) statements. [2024-06-21 16:04:50,465 INFO L201 PluginConnector]: Adding new model witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.06 04:04:50 BoogieIcfgContainer [2024-06-21 16:04:50,466 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-06-21 16:04:50,467 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-06-21 16:04:50,467 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-06-21 16:04:50,470 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-06-21 16:04:50,470 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.06 04:04:49" (1/4) ... [2024-06-21 16:04:50,470 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4ca458cf and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.06 04:04:50, skipping insertion in model container [2024-06-21 16:04:50,470 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 21.06 04:04:49" (2/4) ... [2024-06-21 16:04:50,471 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4ca458cf and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CORRECTNESS_WITNESS 21.06 04:04:50, skipping insertion in model container [2024-06-21 16:04:50,471 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 21.06 04:04:49" (3/4) ... [2024-06-21 16:04:50,471 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4ca458cf and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CORRECTNESS_WITNESS 21.06 04:04:50, skipping insertion in model container [2024-06-21 16:04:50,471 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.06 04:04:50" (4/4) ... [2024-06-21 16:04:50,472 INFO L112 eAbstractionObserver]: Analyzing ICFG 13-privatized_04-priv_multi_true.i [2024-06-21 16:04:50,484 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-06-21 16:04:50,484 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 3 error locations. [2024-06-21 16:04:50,484 INFO L522 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-06-21 16:04:50,527 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2024-06-21 16:04:50,564 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 64 places, 60 transitions, 132 flow [2024-06-21 16:04:50,610 INFO L124 PetriNetUnfolderBase]: 6/57 cut-off events. [2024-06-21 16:04:50,610 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-06-21 16:04:50,613 INFO L83 FinitePrefix]: Finished finitePrefix Result has 67 conditions, 57 events. 6/57 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. 0/48 useless extension candidates. Maximal degree in co-relation 58. Up to 2 conditions per place. [2024-06-21 16:04:50,613 INFO L82 GeneralOperation]: Start removeDead. Operand has 64 places, 60 transitions, 132 flow [2024-06-21 16:04:50,616 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 61 places, 57 transitions, 123 flow [2024-06-21 16:04:50,629 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-06-21 16:04:50,639 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;@43244644, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-06-21 16:04:50,639 INFO L358 AbstractCegarLoop]: Starting to check reachability of 6 error locations. [2024-06-21 16:04:50,646 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-06-21 16:04:50,646 INFO L124 PetriNetUnfolderBase]: 0/5 cut-off events. [2024-06-21 16:04:50,646 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-06-21 16:04:50,646 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 16:04:50,647 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2024-06-21 16:04:50,648 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)] === [2024-06-21 16:04:50,681 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 16:04:50,681 INFO L85 PathProgramCache]: Analyzing trace with hash 420320376, now seen corresponding path program 1 times [2024-06-21 16:04:50,688 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 16:04:50,688 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1681906249] [2024-06-21 16:04:50,688 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 16:04:50,688 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 16:04:50,886 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 16:04:51,056 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 16:04:51,057 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 16:04:51,058 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1681906249] [2024-06-21 16:04:51,058 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1681906249] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 16:04:51,058 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 16:04:51,059 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-06-21 16:04:51,060 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [723800074] [2024-06-21 16:04:51,061 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 16:04:51,067 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-06-21 16:04:51,071 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 16:04:51,097 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-06-21 16:04:51,098 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-06-21 16:04:51,122 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 16 out of 60 [2024-06-21 16:04:51,124 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 61 places, 57 transitions, 123 flow. Second operand has 3 states, 3 states have (on average 17.333333333333332) internal successors, (52), 3 states have internal predecessors, (52), 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) [2024-06-21 16:04:51,124 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 16:04:51,124 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 16 of 60 [2024-06-21 16:04:51,125 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 16:04:52,505 INFO L124 PetriNetUnfolderBase]: 13699/19840 cut-off events. [2024-06-21 16:04:52,506 INFO L125 PetriNetUnfolderBase]: For 51/51 co-relation queries the response was YES. [2024-06-21 16:04:52,537 INFO L83 FinitePrefix]: Finished finitePrefix Result has 37489 conditions, 19840 events. 13699/19840 cut-off events. For 51/51 co-relation queries the response was YES. Maximal size of possible extension queue 550. Compared 118208 event pairs, 2656 based on Foata normal form. 1429/19848 useless extension candidates. Maximal degree in co-relation 37477. Up to 15223 conditions per place. [2024-06-21 16:04:52,569 INFO L140 encePairwiseOnDemand]: 51/60 looper letters, 50 selfloop transitions, 2 changer transitions 17/79 dead transitions. [2024-06-21 16:04:52,569 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 60 places, 79 transitions, 302 flow [2024-06-21 16:04:52,571 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-06-21 16:04:52,572 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-06-21 16:04:52,577 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 123 transitions. [2024-06-21 16:04:52,579 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6833333333333333 [2024-06-21 16:04:52,580 INFO L175 Difference]: Start difference. First operand has 61 places, 57 transitions, 123 flow. Second operand 3 states and 123 transitions. [2024-06-21 16:04:52,581 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 60 places, 79 transitions, 302 flow [2024-06-21 16:04:52,585 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 57 places, 79 transitions, 298 flow, removed 0 selfloop flow, removed 3 redundant places. [2024-06-21 16:04:52,589 INFO L231 Difference]: Finished difference. Result has 58 places, 45 transitions, 112 flow [2024-06-21 16:04:52,591 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=60, PETRI_DIFFERENCE_MINUEND_FLOW=114, PETRI_DIFFERENCE_MINUEND_PLACES=55, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=54, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=52, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=112, PETRI_PLACES=58, PETRI_TRANSITIONS=45} [2024-06-21 16:04:52,593 INFO L281 CegarLoopForPetriNet]: 61 programPoint places, -3 predicate places. [2024-06-21 16:04:52,593 INFO L495 AbstractCegarLoop]: Abstraction has has 58 places, 45 transitions, 112 flow [2024-06-21 16:04:52,593 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 17.333333333333332) internal successors, (52), 3 states have internal predecessors, (52), 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) [2024-06-21 16:04:52,594 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 16:04:52,594 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 16:04:52,594 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-06-21 16:04:52,594 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)] === [2024-06-21 16:04:52,595 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 16:04:52,595 INFO L85 PathProgramCache]: Analyzing trace with hash 1086374682, now seen corresponding path program 1 times [2024-06-21 16:04:52,595 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 16:04:52,595 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1342261474] [2024-06-21 16:04:52,595 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 16:04:52,595 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 16:04:52,623 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 16:04:52,847 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 16:04:52,848 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 16:04:52,848 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1342261474] [2024-06-21 16:04:52,849 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1342261474] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 16:04:52,850 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 16:04:52,850 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-06-21 16:04:52,850 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1523300897] [2024-06-21 16:04:52,850 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 16:04:52,851 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-06-21 16:04:52,852 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 16:04:52,852 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-06-21 16:04:52,852 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-06-21 16:04:52,859 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 60 [2024-06-21 16:04:52,859 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 58 places, 45 transitions, 112 flow. Second operand has 6 states, 6 states have (on average 16.666666666666668) internal successors, (100), 6 states have internal predecessors, (100), 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) [2024-06-21 16:04:52,859 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 16:04:52,860 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 60 [2024-06-21 16:04:52,860 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 16:04:53,806 INFO L124 PetriNetUnfolderBase]: 8998/13854 cut-off events. [2024-06-21 16:04:53,807 INFO L125 PetriNetUnfolderBase]: For 1547/1547 co-relation queries the response was YES. [2024-06-21 16:04:53,829 INFO L83 FinitePrefix]: Finished finitePrefix Result has 27812 conditions, 13854 events. 8998/13854 cut-off events. For 1547/1547 co-relation queries the response was YES. Maximal size of possible extension queue 436. Compared 84054 event pairs, 884 based on Foata normal form. 710/14324 useless extension candidates. Maximal degree in co-relation 27799. Up to 6574 conditions per place. [2024-06-21 16:04:53,873 INFO L140 encePairwiseOnDemand]: 46/60 looper letters, 117 selfloop transitions, 19 changer transitions 0/145 dead transitions. [2024-06-21 16:04:53,873 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 55 places, 145 transitions, 601 flow [2024-06-21 16:04:53,873 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-21 16:04:53,874 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-21 16:04:53,877 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 251 transitions. [2024-06-21 16:04:53,878 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5976190476190476 [2024-06-21 16:04:53,878 INFO L175 Difference]: Start difference. First operand has 58 places, 45 transitions, 112 flow. Second operand 7 states and 251 transitions. [2024-06-21 16:04:53,879 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 55 places, 145 transitions, 601 flow [2024-06-21 16:04:53,880 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 54 places, 145 transitions, 598 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-06-21 16:04:53,882 INFO L231 Difference]: Finished difference. Result has 58 places, 62 transitions, 255 flow [2024-06-21 16:04:53,882 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=60, PETRI_DIFFERENCE_MINUEND_FLOW=110, PETRI_DIFFERENCE_MINUEND_PLACES=48, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=45, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=34, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=255, PETRI_PLACES=58, PETRI_TRANSITIONS=62} [2024-06-21 16:04:53,882 INFO L281 CegarLoopForPetriNet]: 61 programPoint places, -3 predicate places. [2024-06-21 16:04:53,883 INFO L495 AbstractCegarLoop]: Abstraction has has 58 places, 62 transitions, 255 flow [2024-06-21 16:04:53,883 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 16.666666666666668) internal successors, (100), 6 states have internal predecessors, (100), 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) [2024-06-21 16:04:53,883 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 16:04:53,883 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 16:04:53,883 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-06-21 16:04:53,883 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)] === [2024-06-21 16:04:53,884 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 16:04:53,884 INFO L85 PathProgramCache]: Analyzing trace with hash -805728438, now seen corresponding path program 1 times [2024-06-21 16:04:53,884 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 16:04:53,884 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1999918228] [2024-06-21 16:04:53,884 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 16:04:53,885 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 16:04:53,907 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 16:04:53,984 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 16:04:53,984 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 16:04:53,985 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1999918228] [2024-06-21 16:04:53,985 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1999918228] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 16:04:53,985 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 16:04:53,985 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-06-21 16:04:53,985 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1755845942] [2024-06-21 16:04:53,986 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 16:04:53,986 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-06-21 16:04:53,986 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 16:04:53,987 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-06-21 16:04:53,987 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-06-21 16:04:53,987 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 21 out of 60 [2024-06-21 16:04:53,987 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 58 places, 62 transitions, 255 flow. Second operand has 3 states, 3 states have (on average 24.333333333333332) internal successors, (73), 3 states have internal predecessors, (73), 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) [2024-06-21 16:04:53,987 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 16:04:53,988 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 21 of 60 [2024-06-21 16:04:53,988 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 16:04:55,175 INFO L124 PetriNetUnfolderBase]: 10722/17259 cut-off events. [2024-06-21 16:04:55,176 INFO L125 PetriNetUnfolderBase]: For 12413/13339 co-relation queries the response was YES. [2024-06-21 16:04:55,216 INFO L83 FinitePrefix]: Finished finitePrefix Result has 42903 conditions, 17259 events. 10722/17259 cut-off events. For 12413/13339 co-relation queries the response was YES. Maximal size of possible extension queue 611. Compared 117479 event pairs, 3439 based on Foata normal form. 393/17194 useless extension candidates. Maximal degree in co-relation 42884. Up to 9233 conditions per place. [2024-06-21 16:04:55,275 INFO L140 encePairwiseOnDemand]: 52/60 looper letters, 68 selfloop transitions, 16 changer transitions 0/98 dead transitions. [2024-06-21 16:04:55,275 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 60 places, 98 transitions, 550 flow [2024-06-21 16:04:55,276 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-06-21 16:04:55,276 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-06-21 16:04:55,276 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 121 transitions. [2024-06-21 16:04:55,277 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6722222222222223 [2024-06-21 16:04:55,277 INFO L175 Difference]: Start difference. First operand has 58 places, 62 transitions, 255 flow. Second operand 3 states and 121 transitions. [2024-06-21 16:04:55,277 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 60 places, 98 transitions, 550 flow [2024-06-21 16:04:55,296 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 59 places, 98 transitions, 542 flow, removed 2 selfloop flow, removed 1 redundant places. [2024-06-21 16:04:55,298 INFO L231 Difference]: Finished difference. Result has 60 places, 72 transitions, 354 flow [2024-06-21 16:04:55,298 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=60, PETRI_DIFFERENCE_MINUEND_FLOW=250, PETRI_DIFFERENCE_MINUEND_PLACES=57, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=62, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=46, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=354, PETRI_PLACES=60, PETRI_TRANSITIONS=72} [2024-06-21 16:04:55,299 INFO L281 CegarLoopForPetriNet]: 61 programPoint places, -1 predicate places. [2024-06-21 16:04:55,299 INFO L495 AbstractCegarLoop]: Abstraction has has 60 places, 72 transitions, 354 flow [2024-06-21 16:04:55,299 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 24.333333333333332) internal successors, (73), 3 states have internal predecessors, (73), 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) [2024-06-21 16:04:55,299 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 16:04:55,299 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 16:04:55,299 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-06-21 16:04:55,299 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)] === [2024-06-21 16:04:55,300 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 16:04:55,300 INFO L85 PathProgramCache]: Analyzing trace with hash 2002919975, now seen corresponding path program 1 times [2024-06-21 16:04:55,300 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 16:04:55,300 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1188333468] [2024-06-21 16:04:55,300 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 16:04:55,301 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 16:04:55,316 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 16:04:55,503 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 16:04:55,503 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 16:04:55,503 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1188333468] [2024-06-21 16:04:55,503 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1188333468] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 16:04:55,504 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 16:04:55,504 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-21 16:04:55,504 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1466479086] [2024-06-21 16:04:55,504 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 16:04:55,504 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-21 16:04:55,505 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 16:04:55,506 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-21 16:04:55,506 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2024-06-21 16:04:55,521 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 60 [2024-06-21 16:04:55,521 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 60 places, 72 transitions, 354 flow. Second operand has 7 states, 7 states have (on average 17.142857142857142) internal successors, (120), 7 states have internal predecessors, (120), 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) [2024-06-21 16:04:55,522 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 16:04:55,522 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 60 [2024-06-21 16:04:55,522 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 16:04:58,219 INFO L124 PetriNetUnfolderBase]: 24063/36381 cut-off events. [2024-06-21 16:04:58,219 INFO L125 PetriNetUnfolderBase]: For 52292/52863 co-relation queries the response was YES. [2024-06-21 16:04:58,310 INFO L83 FinitePrefix]: Finished finitePrefix Result has 109004 conditions, 36381 events. 24063/36381 cut-off events. For 52292/52863 co-relation queries the response was YES. Maximal size of possible extension queue 1120. Compared 251928 event pairs, 5352 based on Foata normal form. 147/35996 useless extension candidates. Maximal degree in co-relation 108983. Up to 10692 conditions per place. [2024-06-21 16:04:58,420 INFO L140 encePairwiseOnDemand]: 49/60 looper letters, 175 selfloop transitions, 23 changer transitions 0/207 dead transitions. [2024-06-21 16:04:58,421 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 66 places, 207 transitions, 1352 flow [2024-06-21 16:04:58,421 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-21 16:04:58,421 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-21 16:04:58,422 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 256 transitions. [2024-06-21 16:04:58,422 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6095238095238096 [2024-06-21 16:04:58,422 INFO L175 Difference]: Start difference. First operand has 60 places, 72 transitions, 354 flow. Second operand 7 states and 256 transitions. [2024-06-21 16:04:58,422 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 66 places, 207 transitions, 1352 flow [2024-06-21 16:04:58,446 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 65 places, 207 transitions, 1307 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-06-21 16:04:58,448 INFO L231 Difference]: Finished difference. Result has 70 places, 87 transitions, 526 flow [2024-06-21 16:04:58,449 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=60, PETRI_DIFFERENCE_MINUEND_FLOW=338, PETRI_DIFFERENCE_MINUEND_PLACES=59, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=72, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=57, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=526, PETRI_PLACES=70, PETRI_TRANSITIONS=87} [2024-06-21 16:04:58,450 INFO L281 CegarLoopForPetriNet]: 61 programPoint places, 9 predicate places. [2024-06-21 16:04:58,450 INFO L495 AbstractCegarLoop]: Abstraction has has 70 places, 87 transitions, 526 flow [2024-06-21 16:04:58,450 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 17.142857142857142) internal successors, (120), 7 states have internal predecessors, (120), 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) [2024-06-21 16:04:58,450 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 16:04:58,451 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] [2024-06-21 16:04:58,451 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-06-21 16:04:58,451 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)] === [2024-06-21 16:04:58,451 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 16:04:58,451 INFO L85 PathProgramCache]: Analyzing trace with hash 2006274031, now seen corresponding path program 1 times [2024-06-21 16:04:58,451 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 16:04:58,452 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [184100333] [2024-06-21 16:04:58,452 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 16:04:58,452 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 16:04:58,469 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 16:04:58,667 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 16:04:58,667 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 16:04:58,667 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [184100333] [2024-06-21 16:04:58,667 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [184100333] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 16:04:58,667 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 16:04:58,668 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-06-21 16:04:58,668 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [554252794] [2024-06-21 16:04:58,668 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 16:04:58,668 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-06-21 16:04:58,668 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 16:04:58,669 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-06-21 16:04:58,669 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-06-21 16:04:58,675 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 16 out of 60 [2024-06-21 16:04:58,676 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 70 places, 87 transitions, 526 flow. Second operand has 6 states, 6 states have (on average 18.5) internal successors, (111), 6 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 16:04:58,676 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 16:04:58,676 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 16 of 60 [2024-06-21 16:04:58,676 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 16:05:02,291 INFO L124 PetriNetUnfolderBase]: 32748/50082 cut-off events. [2024-06-21 16:05:02,291 INFO L125 PetriNetUnfolderBase]: For 128862/129597 co-relation queries the response was YES. [2024-06-21 16:05:02,434 INFO L83 FinitePrefix]: Finished finitePrefix Result has 159926 conditions, 50082 events. 32748/50082 cut-off events. For 128862/129597 co-relation queries the response was YES. Maximal size of possible extension queue 1130. Compared 353879 event pairs, 7921 based on Foata normal form. 1940/51552 useless extension candidates. Maximal degree in co-relation 159898. Up to 15552 conditions per place. [2024-06-21 16:05:02,643 INFO L140 encePairwiseOnDemand]: 51/60 looper letters, 160 selfloop transitions, 30 changer transitions 0/200 dead transitions. [2024-06-21 16:05:02,644 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 75 places, 200 transitions, 1442 flow [2024-06-21 16:05:02,644 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-21 16:05:02,644 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-21 16:05:02,645 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 229 transitions. [2024-06-21 16:05:02,645 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6361111111111111 [2024-06-21 16:05:02,645 INFO L175 Difference]: Start difference. First operand has 70 places, 87 transitions, 526 flow. Second operand 6 states and 229 transitions. [2024-06-21 16:05:02,645 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 75 places, 200 transitions, 1442 flow [2024-06-21 16:05:02,776 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 75 places, 200 transitions, 1436 flow, removed 3 selfloop flow, removed 0 redundant places. [2024-06-21 16:05:02,779 INFO L231 Difference]: Finished difference. Result has 78 places, 97 transitions, 718 flow [2024-06-21 16:05:02,779 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=60, PETRI_DIFFERENCE_MINUEND_FLOW=520, PETRI_DIFFERENCE_MINUEND_PLACES=70, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=87, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=21, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=63, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=718, PETRI_PLACES=78, PETRI_TRANSITIONS=97} [2024-06-21 16:05:02,781 INFO L281 CegarLoopForPetriNet]: 61 programPoint places, 17 predicate places. [2024-06-21 16:05:02,781 INFO L495 AbstractCegarLoop]: Abstraction has has 78 places, 97 transitions, 718 flow [2024-06-21 16:05:02,781 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 18.5) internal successors, (111), 6 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 16:05:02,781 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 16:05:02,782 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] [2024-06-21 16:05:02,782 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-06-21 16:05:02,782 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)] === [2024-06-21 16:05:02,782 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 16:05:02,782 INFO L85 PathProgramCache]: Analyzing trace with hash -1372385419, now seen corresponding path program 1 times [2024-06-21 16:05:02,782 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 16:05:02,783 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1880345952] [2024-06-21 16:05:02,783 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 16:05:02,783 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 16:05:02,798 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 16:05:02,992 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 16:05:02,993 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 16:05:02,993 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1880345952] [2024-06-21 16:05:02,995 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1880345952] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 16:05:02,996 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 16:05:02,996 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-21 16:05:02,997 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [342731718] [2024-06-21 16:05:02,997 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 16:05:02,997 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-21 16:05:02,997 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 16:05:02,998 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-21 16:05:02,998 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2024-06-21 16:05:03,025 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 60 [2024-06-21 16:05:03,025 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 78 places, 97 transitions, 718 flow. Second operand has 9 states, 9 states have (on average 16.88888888888889) internal successors, (152), 9 states have internal predecessors, (152), 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) [2024-06-21 16:05:03,025 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 16:05:03,025 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 60 [2024-06-21 16:05:03,026 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 16:05:09,546 INFO L124 PetriNetUnfolderBase]: 52366/80679 cut-off events. [2024-06-21 16:05:09,546 INFO L125 PetriNetUnfolderBase]: For 272428/273353 co-relation queries the response was YES. [2024-06-21 16:05:09,902 INFO L83 FinitePrefix]: Finished finitePrefix Result has 273562 conditions, 80679 events. 52366/80679 cut-off events. For 272428/273353 co-relation queries the response was YES. Maximal size of possible extension queue 1501. Compared 605901 event pairs, 6341 based on Foata normal form. 1731/81993 useless extension candidates. Maximal degree in co-relation 273528. Up to 17054 conditions per place. [2024-06-21 16:05:10,146 INFO L140 encePairwiseOnDemand]: 47/60 looper letters, 241 selfloop transitions, 87 changer transitions 2/339 dead transitions. [2024-06-21 16:05:10,146 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 89 places, 339 transitions, 2699 flow [2024-06-21 16:05:10,151 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-21 16:05:10,151 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-21 16:05:10,152 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 428 transitions. [2024-06-21 16:05:10,153 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5944444444444444 [2024-06-21 16:05:10,153 INFO L175 Difference]: Start difference. First operand has 78 places, 97 transitions, 718 flow. Second operand 12 states and 428 transitions. [2024-06-21 16:05:10,153 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 89 places, 339 transitions, 2699 flow [2024-06-21 16:05:10,836 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 89 places, 339 transitions, 2687 flow, removed 6 selfloop flow, removed 0 redundant places. [2024-06-21 16:05:10,839 INFO L231 Difference]: Finished difference. Result has 97 places, 150 transitions, 1609 flow [2024-06-21 16:05:10,839 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=60, PETRI_DIFFERENCE_MINUEND_FLOW=714, PETRI_DIFFERENCE_MINUEND_PLACES=78, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=97, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=42, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=47, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=1609, PETRI_PLACES=97, PETRI_TRANSITIONS=150} [2024-06-21 16:05:10,842 INFO L281 CegarLoopForPetriNet]: 61 programPoint places, 36 predicate places. [2024-06-21 16:05:10,842 INFO L495 AbstractCegarLoop]: Abstraction has has 97 places, 150 transitions, 1609 flow [2024-06-21 16:05:10,842 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 16.88888888888889) internal successors, (152), 9 states have internal predecessors, (152), 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) [2024-06-21 16:05:10,842 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 16:05:10,842 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] [2024-06-21 16:05:10,843 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-06-21 16:05:10,843 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)] === [2024-06-21 16:05:10,843 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 16:05:10,843 INFO L85 PathProgramCache]: Analyzing trace with hash -392731126, now seen corresponding path program 1 times [2024-06-21 16:05:10,843 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 16:05:10,843 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1394825568] [2024-06-21 16:05:10,844 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 16:05:10,844 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 16:05:10,858 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 16:05:11,175 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 16:05:11,176 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 16:05:11,176 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1394825568] [2024-06-21 16:05:11,176 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1394825568] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 16:05:11,176 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 16:05:11,176 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-21 16:05:11,176 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [101307102] [2024-06-21 16:05:11,177 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 16:05:11,177 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-21 16:05:11,177 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 16:05:11,177 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-21 16:05:11,178 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2024-06-21 16:05:11,191 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 60 [2024-06-21 16:05:11,192 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 97 places, 150 transitions, 1609 flow. Second operand has 11 states, 11 states have (on average 16.636363636363637) internal successors, (183), 11 states have internal predecessors, (183), 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) [2024-06-21 16:05:11,192 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 16:05:11,192 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 60 [2024-06-21 16:05:11,192 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 16:05:21,360 INFO L124 PetriNetUnfolderBase]: 64920/102512 cut-off events. [2024-06-21 16:05:21,360 INFO L125 PetriNetUnfolderBase]: For 660036/662919 co-relation queries the response was YES. [2024-06-21 16:05:21,887 INFO L83 FinitePrefix]: Finished finitePrefix Result has 406523 conditions, 102512 events. 64920/102512 cut-off events. For 660036/662919 co-relation queries the response was YES. Maximal size of possible extension queue 2152. Compared 827967 event pairs, 9706 based on Foata normal form. 1406/103448 useless extension candidates. Maximal degree in co-relation 406478. Up to 67164 conditions per place. [2024-06-21 16:05:22,172 INFO L140 encePairwiseOnDemand]: 45/60 looper letters, 356 selfloop transitions, 97 changer transitions 0/462 dead transitions. [2024-06-21 16:05:22,172 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 113 places, 462 transitions, 4265 flow [2024-06-21 16:05:22,173 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2024-06-21 16:05:22,173 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17 states. [2024-06-21 16:05:22,174 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 579 transitions. [2024-06-21 16:05:22,175 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5676470588235294 [2024-06-21 16:05:22,175 INFO L175 Difference]: Start difference. First operand has 97 places, 150 transitions, 1609 flow. Second operand 17 states and 579 transitions. [2024-06-21 16:05:22,175 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 113 places, 462 transitions, 4265 flow [2024-06-21 16:05:26,001 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 112 places, 462 transitions, 4135 flow, removed 64 selfloop flow, removed 1 redundant places. [2024-06-21 16:05:26,005 INFO L231 Difference]: Finished difference. Result has 122 places, 221 transitions, 2832 flow [2024-06-21 16:05:26,006 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=60, PETRI_DIFFERENCE_MINUEND_FLOW=1379, PETRI_DIFFERENCE_MINUEND_PLACES=96, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=137, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=30, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=74, PETRI_DIFFERENCE_SUBTRAHEND_STATES=17, PETRI_FLOW=2832, PETRI_PLACES=122, PETRI_TRANSITIONS=221} [2024-06-21 16:05:26,006 INFO L281 CegarLoopForPetriNet]: 61 programPoint places, 61 predicate places. [2024-06-21 16:05:26,007 INFO L495 AbstractCegarLoop]: Abstraction has has 122 places, 221 transitions, 2832 flow [2024-06-21 16:05:26,007 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 16.636363636363637) internal successors, (183), 11 states have internal predecessors, (183), 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) [2024-06-21 16:05:26,007 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 16:05:26,007 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] [2024-06-21 16:05:26,007 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-06-21 16:05:26,007 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)] === [2024-06-21 16:05:26,008 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 16:05:26,008 INFO L85 PathProgramCache]: Analyzing trace with hash 106183732, now seen corresponding path program 1 times [2024-06-21 16:05:26,008 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 16:05:26,008 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1763246565] [2024-06-21 16:05:26,008 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 16:05:26,009 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 16:05:26,044 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 16:05:26,180 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 16:05:26,181 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 16:05:26,181 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1763246565] [2024-06-21 16:05:26,181 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1763246565] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 16:05:26,181 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 16:05:26,181 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-06-21 16:05:26,181 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [676642519] [2024-06-21 16:05:26,182 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 16:05:26,182 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-06-21 16:05:26,182 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 16:05:26,183 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-06-21 16:05:26,183 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-06-21 16:05:26,183 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 21 out of 60 [2024-06-21 16:05:26,184 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 122 places, 221 transitions, 2832 flow. Second operand has 5 states, 5 states have (on average 25.0) internal successors, (125), 5 states have internal predecessors, (125), 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) [2024-06-21 16:05:26,184 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 16:05:26,184 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 21 of 60 [2024-06-21 16:05:26,184 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 16:05:26,837 INFO L124 PetriNetUnfolderBase]: 4390/7059 cut-off events. [2024-06-21 16:05:26,837 INFO L125 PetriNetUnfolderBase]: For 43492/43609 co-relation queries the response was YES. [2024-06-21 16:05:26,857 INFO L83 FinitePrefix]: Finished finitePrefix Result has 26192 conditions, 7059 events. 4390/7059 cut-off events. For 43492/43609 co-relation queries the response was YES. Maximal size of possible extension queue 155. Compared 39265 event pairs, 757 based on Foata normal form. 239/7229 useless extension candidates. Maximal degree in co-relation 26154. Up to 5505 conditions per place. [2024-06-21 16:05:26,860 INFO L140 encePairwiseOnDemand]: 55/60 looper letters, 0 selfloop transitions, 0 changer transitions 68/68 dead transitions. [2024-06-21 16:05:26,861 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 104 places, 68 transitions, 570 flow [2024-06-21 16:05:26,861 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-06-21 16:05:26,861 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-06-21 16:05:26,861 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 130 transitions. [2024-06-21 16:05:26,862 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5416666666666666 [2024-06-21 16:05:26,862 INFO L175 Difference]: Start difference. First operand has 122 places, 221 transitions, 2832 flow. Second operand 4 states and 130 transitions. [2024-06-21 16:05:26,862 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 104 places, 68 transitions, 570 flow [2024-06-21 16:05:26,910 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 71 places, 68 transitions, 391 flow, removed 17 selfloop flow, removed 33 redundant places. [2024-06-21 16:05:26,910 INFO L231 Difference]: Finished difference. Result has 71 places, 0 transitions, 0 flow [2024-06-21 16:05:26,911 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=60, PETRI_DIFFERENCE_MINUEND_FLOW=233, PETRI_DIFFERENCE_MINUEND_PLACES=68, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=52, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=52, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=0, PETRI_PLACES=71, PETRI_TRANSITIONS=0} [2024-06-21 16:05:26,911 INFO L281 CegarLoopForPetriNet]: 61 programPoint places, 10 predicate places. [2024-06-21 16:05:26,911 INFO L495 AbstractCegarLoop]: Abstraction has has 71 places, 0 transitions, 0 flow [2024-06-21 16:05:26,911 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 25.0) internal successors, (125), 5 states have internal predecessors, (125), 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) [2024-06-21 16:05:26,913 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT (5 of 6 remaining) [2024-06-21 16:05:26,914 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (4 of 6 remaining) [2024-06-21 16:05:26,914 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (3 of 6 remaining) [2024-06-21 16:05:26,914 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (2 of 6 remaining) [2024-06-21 16:05:26,914 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 6 remaining) [2024-06-21 16:05:26,914 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 6 remaining) [2024-06-21 16:05:26,915 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-06-21 16:05:26,915 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 16:05:26,917 INFO L229 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2024-06-21 16:05:26,917 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2024-06-21 16:05:26,920 INFO L507 ceAbstractionStarter]: Automizer considered 3 witness invariants [2024-06-21 16:05:26,920 INFO L508 ceAbstractionStarter]: WitnessConsidered=3 [2024-06-21 16:05:26,921 INFO L201 PluginConnector]: Adding new model witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 21.06 04:05:26 BasicIcfg [2024-06-21 16:05:26,921 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2024-06-21 16:05:26,921 INFO L158 Benchmark]: Toolchain (without parser) took 37747.39ms. Allocated memory was 167.8MB in the beginning and 14.2GB in the end (delta: 14.0GB). Free memory was 89.3MB in the beginning and 11.9GB in the end (delta: -11.8GB). Peak memory consumption was 2.9GB. Max. memory is 16.1GB. [2024-06-21 16:05:26,921 INFO L158 Benchmark]: CDTParser took 0.15ms. Allocated memory is still 119.5MB. Free memory is still 78.6MB. There was no memory consumed. Max. memory is 16.1GB. [2024-06-21 16:05:26,921 INFO L158 Benchmark]: Witness Parser took 0.11ms. Allocated memory is still 167.8MB. Free memory is still 94.0MB. There was no memory consumed. Max. memory is 16.1GB. [2024-06-21 16:05:26,922 INFO L158 Benchmark]: CACSL2BoogieTranslator took 640.53ms. Allocated memory is still 167.8MB. Free memory was 89.0MB in the beginning and 120.5MB in the end (delta: -31.4MB). Peak memory consumption was 35.5MB. Max. memory is 16.1GB. [2024-06-21 16:05:26,922 INFO L158 Benchmark]: Boogie Procedure Inliner took 62.17ms. Allocated memory is still 167.8MB. Free memory was 120.5MB in the beginning and 117.8MB in the end (delta: 2.7MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2024-06-21 16:05:26,922 INFO L158 Benchmark]: Boogie Preprocessor took 61.63ms. Allocated memory is still 167.8MB. Free memory was 117.8MB in the beginning and 114.2MB in the end (delta: 3.6MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2024-06-21 16:05:26,922 INFO L158 Benchmark]: RCFGBuilder took 523.92ms. Allocated memory is still 167.8MB. Free memory was 114.2MB in the beginning and 69.0MB in the end (delta: 45.2MB). Peak memory consumption was 44.0MB. Max. memory is 16.1GB. [2024-06-21 16:05:26,923 INFO L158 Benchmark]: TraceAbstraction took 36453.72ms. Allocated memory was 167.8MB in the beginning and 14.2GB in the end (delta: 14.0GB). Free memory was 68.6MB in the beginning and 11.9GB in the end (delta: -11.8GB). Peak memory consumption was 2.9GB. Max. memory is 16.1GB. [2024-06-21 16:05:26,924 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.15ms. Allocated memory is still 119.5MB. Free memory is still 78.6MB. There was no memory consumed. Max. memory is 16.1GB. * Witness Parser took 0.11ms. Allocated memory is still 167.8MB. Free memory is still 94.0MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 640.53ms. Allocated memory is still 167.8MB. Free memory was 89.0MB in the beginning and 120.5MB in the end (delta: -31.4MB). Peak memory consumption was 35.5MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 62.17ms. Allocated memory is still 167.8MB. Free memory was 120.5MB in the beginning and 117.8MB in the end (delta: 2.7MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 61.63ms. Allocated memory is still 167.8MB. Free memory was 117.8MB in the beginning and 114.2MB in the end (delta: 3.6MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * RCFGBuilder took 523.92ms. Allocated memory is still 167.8MB. Free memory was 114.2MB in the beginning and 69.0MB in the end (delta: 45.2MB). Peak memory consumption was 44.0MB. Max. memory is 16.1GB. * TraceAbstraction took 36453.72ms. Allocated memory was 167.8MB in the beginning and 14.2GB in the end (delta: 14.0GB). Free memory was 68.6MB in the beginning and 11.9GB in the end (delta: -11.8GB). Peak memory consumption was 2.9GB. 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, 89 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: 36.4s, OverallIterations: 8, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 34.3s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.1s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 958 SdHoareTripleChecker+Valid, 1.4s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 944 mSDsluCounter, 43 SdHoareTripleChecker+Invalid, 1.1s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 22 mSDsCounter, 161 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 2531 IncrementalHoareTripleChecker+Invalid, 2692 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 161 mSolverCounterUnsat, 21 mSDtfsCounter, 2531 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 56 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 51 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 101 ImplicationChecksByTransitivity, 0.3s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=2832occurred in iteration=7, InterpolantAutomatonStates: 59, 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, 1.5s InterpolantComputationTime, 144 NumberOfCodeBlocks, 144 NumberOfCodeBlocksAsserted, 8 NumberOfCheckSat, 136 ConstructedInterpolants, 0 QuantifiedInterpolants, 923 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! [2024-06-21 16:05:26,945 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