./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/mutex-meet-nonrel/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/mutex-meet-nonrel/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 20:25:32,961 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-06-21 20:25:32,993 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-06-21 20:25:32,996 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-06-21 20:25:32,996 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-06-21 20:25:33,009 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-06-21 20:25:33,009 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-06-21 20:25:33,010 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-06-21 20:25:33,010 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-06-21 20:25:33,010 INFO L153 SettingsManager]: * Use memory slicer=true [2024-06-21 20:25:33,011 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-06-21 20:25:33,011 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-06-21 20:25:33,011 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-06-21 20:25:33,012 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-06-21 20:25:33,012 INFO L153 SettingsManager]: * Use SBE=true [2024-06-21 20:25:33,012 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-06-21 20:25:33,012 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-06-21 20:25:33,013 INFO L153 SettingsManager]: * sizeof long=4 [2024-06-21 20:25:33,013 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-06-21 20:25:33,013 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-06-21 20:25:33,013 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-06-21 20:25:33,014 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-06-21 20:25:33,014 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-06-21 20:25:33,014 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-06-21 20:25:33,014 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-06-21 20:25:33,014 INFO L153 SettingsManager]: * sizeof long double=12 [2024-06-21 20:25:33,015 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-06-21 20:25:33,015 INFO L153 SettingsManager]: * Use constant arrays=true [2024-06-21 20:25:33,015 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-06-21 20:25:33,015 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-06-21 20:25:33,016 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-06-21 20:25:33,016 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-06-21 20:25:33,016 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-06-21 20:25:33,016 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-06-21 20:25:33,016 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-06-21 20:25:33,016 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-06-21 20:25:33,017 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-06-21 20:25:33,017 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-06-21 20:25:33,017 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-06-21 20:25:33,017 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-06-21 20:25:33,017 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2024-06-21 20:25:33,018 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-06-21 20:25:33,018 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-06-21 20:25:33,018 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessparser: Only consider loop invariants -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Check unreachability of reach_error function -> false [2024-06-21 20:25:33,159 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-06-21 20:25:33,173 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-06-21 20:25:33,175 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-06-21 20:25:33,176 INFO L270 PluginConnector]: Initializing CDTParser... [2024-06-21 20:25:33,176 INFO L274 PluginConnector]: CDTParser initialized [2024-06-21 20:25:33,177 INFO L431 ainManager$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 20:25:34,196 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-06-21 20:25:34,392 INFO L384 CDTParser]: Found 1 translation units. [2024-06-21 20:25:34,392 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/goblint-regression/13-privatized_04-priv_multi_true.i [2024-06-21 20:25:34,414 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/0c7d430f4/eeb5f471bc8041768f649638845bccd0/FLAG877838adf [2024-06-21 20:25:34,423 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/0c7d430f4/eeb5f471bc8041768f649638845bccd0 [2024-06-21 20:25:34,425 INFO L270 PluginConnector]: Initializing Witness Parser... [2024-06-21 20:25:34,426 INFO L274 PluginConnector]: Witness Parser initialized [2024-06-21 20:25:34,426 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/./goblint.2024-06-19_11-23-25.files/mutex-meet-nonrel/13-privatized_04-priv_multi_true.yml/witness.yml [2024-06-21 20:25:34,520 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-06-21 20:25:34,521 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2024-06-21 20:25:34,522 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-06-21 20:25:34,522 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-06-21 20:25:34,535 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-06-21 20:25:34,535 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.06 08:25:34" (1/2) ... [2024-06-21 20:25:34,536 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2deaa974 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.06 08:25:34, skipping insertion in model container [2024-06-21 20:25:34,536 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.06 08:25:34" (1/2) ... [2024-06-21 20:25:34,539 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@20dd1988 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.06 08:25:34, skipping insertion in model container [2024-06-21 20:25:34,539 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 21.06 08:25:34" (2/2) ... [2024-06-21 20:25:34,539 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2deaa974 and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 21.06 08:25:34, skipping insertion in model container [2024-06-21 20:25:34,539 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 21.06 08:25:34" (2/2) ... [2024-06-21 20:25:34,539 INFO L83 nessWitnessExtractor]: Extracting all invariants from correctness witness [2024-06-21 20:25:34,595 INFO L95 edCorrectnessWitness]: Found the following entries in the witness: [2024-06-21 20:25:34,596 INFO L97 edCorrectnessWitness]: Location invariant before [L1203-L1203] (((! multithreaded || (B == 5 || B == 6)) && (! multithreaded || (mutex_B_locked || B == 5))) && (! multithreaded || (1 <= A && A <= 100))) && (! multithreaded || (mutex_A_locked || (A == 5 && B == 5))) [2024-06-21 20:25:34,596 INFO L97 edCorrectnessWitness]: Location invariant before [L1205-L1212] (((! multithreaded || (B == 5 || B == 6)) && (! multithreaded || (mutex_B_locked || B == 5))) && (! multithreaded || (1 <= A && A <= 100))) && (! multithreaded || (mutex_A_locked || (A == 5 && B == 5))) [2024-06-21 20:25:34,597 INFO L97 edCorrectnessWitness]: Location invariant before [L1204-L1204] (((! multithreaded || (B == 5 || B == 6)) && (! multithreaded || (mutex_B_locked || B == 5))) && (! multithreaded || (1 <= A && A <= 100))) && (! multithreaded || (mutex_A_locked || (A == 5 && B == 5))) [2024-06-21 20:25:34,597 INFO L103 edCorrectnessWitness]: ghost_variable mutex_A_locked = 0 [2024-06-21 20:25:34,597 INFO L103 edCorrectnessWitness]: ghost_variable mutex_B_locked = 0 [2024-06-21 20:25:34,597 INFO L103 edCorrectnessWitness]: ghost_variable multithreaded = 0 [2024-06-21 20:25:34,597 INFO L106 edCorrectnessWitness]: ghost_update [L1190-L1190] mutex_B_locked = 0; [2024-06-21 20:25:34,597 INFO L106 edCorrectnessWitness]: ghost_update [L1176-L1176] mutex_A_locked = 0; [2024-06-21 20:25:34,597 INFO L106 edCorrectnessWitness]: ghost_update [L1174-L1174] mutex_B_locked = 0; [2024-06-21 20:25:34,598 INFO L106 edCorrectnessWitness]: ghost_update [L1168-L1168] mutex_A_locked = 1; [2024-06-21 20:25:34,598 INFO L106 edCorrectnessWitness]: ghost_update [L1210-L1210] mutex_A_locked = 0; [2024-06-21 20:25:34,598 INFO L106 edCorrectnessWitness]: ghost_update [L1161-L1161] mutex_A_locked = 0; [2024-06-21 20:25:34,598 INFO L106 edCorrectnessWitness]: ghost_update [L1158-L1158] mutex_A_locked = 1; [2024-06-21 20:25:34,598 INFO L106 edCorrectnessWitness]: ghost_update [L1202-L1202] multithreaded = 1; [2024-06-21 20:25:34,598 INFO L106 edCorrectnessWitness]: ghost_update [L1206-L1206] mutex_A_locked = 1; [2024-06-21 20:25:34,598 INFO L106 edCorrectnessWitness]: ghost_update [L1187-L1187] mutex_B_locked = 1; [2024-06-21 20:25:34,599 INFO L106 edCorrectnessWitness]: ghost_update [L1209-L1209] mutex_B_locked = 0; [2024-06-21 20:25:34,599 INFO L106 edCorrectnessWitness]: ghost_update [L1207-L1207] mutex_B_locked = 1; [2024-06-21 20:25:34,599 INFO L106 edCorrectnessWitness]: ghost_update [L1171-L1171] mutex_B_locked = 1; [2024-06-21 20:25:34,642 INFO L177 MainTranslator]: Built tables and reachable declarations [2024-06-21 20:25:34,989 INFO L207 PostProcessor]: Analyzing one entry point: main [2024-06-21 20:25:34,998 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 20:25:35,077 INFO L207 PostProcessor]: Analyzing one entry point: main [2024-06-21 20:25:35,121 INFO L206 MainTranslator]: Completed translation [2024-06-21 20:25:35,122 INFO L201 PluginConnector]: Adding new model witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 21.06 08:25:35 WrapperNode [2024-06-21 20:25:35,122 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-06-21 20:25:35,123 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-06-21 20:25:35,123 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-06-21 20:25:35,123 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-06-21 20:25:35,128 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 08:25:35" (1/1) ... [2024-06-21 20:25:35,150 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 08:25:35" (1/1) ... [2024-06-21 20:25:35,171 INFO L138 Inliner]: procedures = 271, calls = 38, calls flagged for inlining = 5, calls inlined = 6, statements flattened = 118 [2024-06-21 20:25:35,171 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-06-21 20:25:35,171 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-06-21 20:25:35,171 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-06-21 20:25:35,171 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-06-21 20:25:35,178 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 08:25:35" (1/1) ... [2024-06-21 20:25:35,178 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 08:25:35" (1/1) ... [2024-06-21 20:25:35,190 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 08:25:35" (1/1) ... [2024-06-21 20:25:35,204 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 20:25:35,204 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 08:25:35" (1/1) ... [2024-06-21 20:25:35,204 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 08:25:35" (1/1) ... [2024-06-21 20:25:35,211 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 08:25:35" (1/1) ... [2024-06-21 20:25:35,214 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 08:25:35" (1/1) ... [2024-06-21 20:25:35,227 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 08:25:35" (1/1) ... [2024-06-21 20:25:35,232 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 08:25:35" (1/1) ... [2024-06-21 20:25:35,236 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-06-21 20:25:35,237 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-06-21 20:25:35,241 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-06-21 20:25:35,241 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-06-21 20:25:35,242 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 08:25:35" (1/1) ... [2024-06-21 20:25:35,246 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-06-21 20:25:35,253 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-06-21 20:25:35,263 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 20:25:35,265 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 20:25:35,287 INFO L130 BoogieDeclarations]: Found specification of procedure generate [2024-06-21 20:25:35,287 INFO L138 BoogieDeclarations]: Found implementation of procedure generate [2024-06-21 20:25:35,287 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexUnlock [2024-06-21 20:25:35,287 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2024-06-21 20:25:35,287 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-06-21 20:25:35,288 INFO L130 BoogieDeclarations]: Found specification of procedure dispose [2024-06-21 20:25:35,288 INFO L138 BoogieDeclarations]: Found implementation of procedure dispose [2024-06-21 20:25:35,288 INFO L130 BoogieDeclarations]: Found specification of procedure process [2024-06-21 20:25:35,288 INFO L138 BoogieDeclarations]: Found implementation of procedure process [2024-06-21 20:25:35,288 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-06-21 20:25:35,288 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-06-21 20:25:35,288 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2024-06-21 20:25:35,288 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-06-21 20:25:35,289 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-06-21 20:25:35,290 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 20:25:35,500 INFO L244 CfgBuilder]: Building ICFG [2024-06-21 20:25:35,502 INFO L270 CfgBuilder]: Building CFG for each procedure with an implementation [2024-06-21 20:25:35,712 INFO L289 CfgBuilder]: Ommited future-live optimization because the input is a concurrent program. [2024-06-21 20:25:35,712 INFO L293 CfgBuilder]: Performing block encoding [2024-06-21 20:25:35,816 INFO L315 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-06-21 20:25:35,816 INFO L320 CfgBuilder]: Removed 4 assume(true) statements. [2024-06-21 20:25:35,817 INFO L201 PluginConnector]: Adding new model witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.06 08:25:35 BoogieIcfgContainer [2024-06-21 20:25:35,817 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-06-21 20:25:35,821 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-06-21 20:25:35,821 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-06-21 20:25:35,823 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-06-21 20:25:35,823 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.06 08:25:34" (1/4) ... [2024-06-21 20:25:35,824 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7ed43a7b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.06 08:25:35, skipping insertion in model container [2024-06-21 20:25:35,824 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 21.06 08:25:34" (2/4) ... [2024-06-21 20:25:35,825 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7ed43a7b and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CORRECTNESS_WITNESS 21.06 08:25:35, skipping insertion in model container [2024-06-21 20:25:35,825 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 08:25:35" (3/4) ... [2024-06-21 20:25:35,825 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7ed43a7b and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CORRECTNESS_WITNESS 21.06 08:25:35, skipping insertion in model container [2024-06-21 20:25:35,825 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.06 08:25:35" (4/4) ... [2024-06-21 20:25:35,826 INFO L112 eAbstractionObserver]: Analyzing ICFG 13-privatized_04-priv_multi_true.i [2024-06-21 20:25:35,839 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-06-21 20:25:35,839 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 3 error locations. [2024-06-21 20:25:35,839 INFO L522 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-06-21 20:25:35,876 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2024-06-21 20:25:35,906 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 64 places, 60 transitions, 132 flow [2024-06-21 20:25:35,932 INFO L124 PetriNetUnfolderBase]: 6/57 cut-off events. [2024-06-21 20:25:35,932 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-06-21 20:25:35,935 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 20:25:35,936 INFO L82 GeneralOperation]: Start removeDead. Operand has 64 places, 60 transitions, 132 flow [2024-06-21 20:25:35,940 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 61 places, 57 transitions, 123 flow [2024-06-21 20:25:35,951 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-06-21 20:25:35,960 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;@66e881c8, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-06-21 20:25:35,960 INFO L358 AbstractCegarLoop]: Starting to check reachability of 6 error locations. [2024-06-21 20:25:35,964 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-06-21 20:25:35,964 INFO L124 PetriNetUnfolderBase]: 0/5 cut-off events. [2024-06-21 20:25:35,964 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-06-21 20:25:35,965 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 20:25:35,966 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2024-06-21 20:25:35,966 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 20:25:35,970 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 20:25:35,970 INFO L85 PathProgramCache]: Analyzing trace with hash 420320376, now seen corresponding path program 1 times [2024-06-21 20:25:35,992 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 20:25:35,993 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2014680677] [2024-06-21 20:25:35,993 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 20:25:35,993 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 20:25:36,201 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 20:25:36,369 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 20:25:36,369 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 20:25:36,369 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2014680677] [2024-06-21 20:25:36,370 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2014680677] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 20:25:36,371 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 20:25:36,371 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-06-21 20:25:36,373 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1781369108] [2024-06-21 20:25:36,373 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 20:25:36,379 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-06-21 20:25:36,382 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 20:25:36,398 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-06-21 20:25:36,399 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-06-21 20:25:36,405 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 16 out of 60 [2024-06-21 20:25:36,407 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 20:25:36,407 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 20:25:36,407 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 16 of 60 [2024-06-21 20:25:36,408 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 20:25:37,814 INFO L124 PetriNetUnfolderBase]: 13699/19840 cut-off events. [2024-06-21 20:25:37,814 INFO L125 PetriNetUnfolderBase]: For 51/51 co-relation queries the response was YES. [2024-06-21 20:25:37,845 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 20:25:37,881 INFO L140 encePairwiseOnDemand]: 51/60 looper letters, 50 selfloop transitions, 2 changer transitions 17/79 dead transitions. [2024-06-21 20:25:37,881 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 60 places, 79 transitions, 302 flow [2024-06-21 20:25:37,882 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-06-21 20:25:37,884 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-06-21 20:25:37,888 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 123 transitions. [2024-06-21 20:25:37,890 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6833333333333333 [2024-06-21 20:25:37,892 INFO L175 Difference]: Start difference. First operand has 61 places, 57 transitions, 123 flow. Second operand 3 states and 123 transitions. [2024-06-21 20:25:37,893 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 60 places, 79 transitions, 302 flow [2024-06-21 20:25:37,897 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 20:25:37,902 INFO L231 Difference]: Finished difference. Result has 58 places, 45 transitions, 112 flow [2024-06-21 20:25:37,903 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 20:25:37,907 INFO L281 CegarLoopForPetriNet]: 61 programPoint places, -3 predicate places. [2024-06-21 20:25:37,907 INFO L495 AbstractCegarLoop]: Abstraction has has 58 places, 45 transitions, 112 flow [2024-06-21 20:25:37,907 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 20:25:37,907 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 20:25:37,908 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 20:25:37,908 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-06-21 20:25:37,908 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 20:25:37,909 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 20:25:37,909 INFO L85 PathProgramCache]: Analyzing trace with hash 1086374682, now seen corresponding path program 1 times [2024-06-21 20:25:37,909 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 20:25:37,909 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [234562889] [2024-06-21 20:25:37,910 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 20:25:37,910 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 20:25:37,946 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 20:25:38,225 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 20:25:38,225 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 20:25:38,226 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [234562889] [2024-06-21 20:25:38,226 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [234562889] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 20:25:38,227 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 20:25:38,227 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-06-21 20:25:38,227 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1604967671] [2024-06-21 20:25:38,227 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 20:25:38,228 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-06-21 20:25:38,229 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 20:25:38,229 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-06-21 20:25:38,229 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-06-21 20:25:38,236 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 60 [2024-06-21 20:25:38,236 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 20:25:38,237 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 20:25:38,237 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 60 [2024-06-21 20:25:38,237 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 20:25:39,161 INFO L124 PetriNetUnfolderBase]: 8998/13854 cut-off events. [2024-06-21 20:25:39,161 INFO L125 PetriNetUnfolderBase]: For 1547/1547 co-relation queries the response was YES. [2024-06-21 20:25:39,174 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 20:25:39,205 INFO L140 encePairwiseOnDemand]: 46/60 looper letters, 117 selfloop transitions, 19 changer transitions 0/145 dead transitions. [2024-06-21 20:25:39,206 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 55 places, 145 transitions, 601 flow [2024-06-21 20:25:39,207 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-21 20:25:39,207 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-21 20:25:39,208 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 251 transitions. [2024-06-21 20:25:39,208 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5976190476190476 [2024-06-21 20:25:39,208 INFO L175 Difference]: Start difference. First operand has 58 places, 45 transitions, 112 flow. Second operand 7 states and 251 transitions. [2024-06-21 20:25:39,209 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 55 places, 145 transitions, 601 flow [2024-06-21 20:25:39,210 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 20:25:39,211 INFO L231 Difference]: Finished difference. Result has 58 places, 62 transitions, 255 flow [2024-06-21 20:25:39,211 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 20:25:39,212 INFO L281 CegarLoopForPetriNet]: 61 programPoint places, -3 predicate places. [2024-06-21 20:25:39,212 INFO L495 AbstractCegarLoop]: Abstraction has has 58 places, 62 transitions, 255 flow [2024-06-21 20:25:39,212 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 20:25:39,212 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 20:25:39,212 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 20:25:39,212 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-06-21 20:25:39,213 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 20:25:39,213 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 20:25:39,213 INFO L85 PathProgramCache]: Analyzing trace with hash -805728438, now seen corresponding path program 1 times [2024-06-21 20:25:39,213 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 20:25:39,213 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [97481343] [2024-06-21 20:25:39,214 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 20:25:39,214 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 20:25:39,228 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 20:25:39,276 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 20:25:39,276 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 20:25:39,276 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [97481343] [2024-06-21 20:25:39,277 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [97481343] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 20:25:39,277 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 20:25:39,277 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-06-21 20:25:39,277 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [835475401] [2024-06-21 20:25:39,277 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 20:25:39,278 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-06-21 20:25:39,278 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 20:25:39,278 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-06-21 20:25:39,278 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-06-21 20:25:39,279 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 21 out of 60 [2024-06-21 20:25:39,279 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 20:25:39,279 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 20:25:39,279 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 21 of 60 [2024-06-21 20:25:39,279 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 20:25:40,548 INFO L124 PetriNetUnfolderBase]: 10722/17259 cut-off events. [2024-06-21 20:25:40,548 INFO L125 PetriNetUnfolderBase]: For 12413/13339 co-relation queries the response was YES. [2024-06-21 20:25:40,581 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 20:25:40,639 INFO L140 encePairwiseOnDemand]: 52/60 looper letters, 68 selfloop transitions, 16 changer transitions 0/98 dead transitions. [2024-06-21 20:25:40,639 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 60 places, 98 transitions, 550 flow [2024-06-21 20:25:40,640 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-06-21 20:25:40,640 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-06-21 20:25:40,642 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 121 transitions. [2024-06-21 20:25:40,642 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6722222222222223 [2024-06-21 20:25:40,642 INFO L175 Difference]: Start difference. First operand has 58 places, 62 transitions, 255 flow. Second operand 3 states and 121 transitions. [2024-06-21 20:25:40,643 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 60 places, 98 transitions, 550 flow [2024-06-21 20:25:40,665 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 20:25:40,667 INFO L231 Difference]: Finished difference. Result has 60 places, 72 transitions, 354 flow [2024-06-21 20:25:40,667 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 20:25:40,668 INFO L281 CegarLoopForPetriNet]: 61 programPoint places, -1 predicate places. [2024-06-21 20:25:40,668 INFO L495 AbstractCegarLoop]: Abstraction has has 60 places, 72 transitions, 354 flow [2024-06-21 20:25:40,669 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 20:25:40,669 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 20:25:40,669 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 20:25:40,669 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-06-21 20:25:40,669 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 20:25:40,670 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 20:25:40,670 INFO L85 PathProgramCache]: Analyzing trace with hash 2002919975, now seen corresponding path program 1 times [2024-06-21 20:25:40,670 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 20:25:40,670 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [254439959] [2024-06-21 20:25:40,670 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 20:25:40,670 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 20:25:40,694 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 20:25:40,961 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 20:25:40,961 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 20:25:40,962 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [254439959] [2024-06-21 20:25:40,962 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [254439959] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 20:25:40,962 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 20:25:40,962 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-21 20:25:40,962 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1901402536] [2024-06-21 20:25:40,962 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 20:25:40,963 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-21 20:25:40,963 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 20:25:40,964 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-21 20:25:40,964 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2024-06-21 20:25:40,981 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 60 [2024-06-21 20:25:40,982 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 20:25:40,982 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 20:25:40,982 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 60 [2024-06-21 20:25:40,983 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 20:25:43,475 INFO L124 PetriNetUnfolderBase]: 24063/36381 cut-off events. [2024-06-21 20:25:43,476 INFO L125 PetriNetUnfolderBase]: For 52292/52863 co-relation queries the response was YES. [2024-06-21 20:25:43,544 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 20:25:43,650 INFO L140 encePairwiseOnDemand]: 49/60 looper letters, 175 selfloop transitions, 23 changer transitions 0/207 dead transitions. [2024-06-21 20:25:43,650 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 66 places, 207 transitions, 1352 flow [2024-06-21 20:25:43,650 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-21 20:25:43,651 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-21 20:25:43,652 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 256 transitions. [2024-06-21 20:25:43,652 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6095238095238096 [2024-06-21 20:25:43,652 INFO L175 Difference]: Start difference. First operand has 60 places, 72 transitions, 354 flow. Second operand 7 states and 256 transitions. [2024-06-21 20:25:43,652 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 66 places, 207 transitions, 1352 flow [2024-06-21 20:25:43,676 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 20:25:43,679 INFO L231 Difference]: Finished difference. Result has 70 places, 87 transitions, 526 flow [2024-06-21 20:25:43,680 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 20:25:43,681 INFO L281 CegarLoopForPetriNet]: 61 programPoint places, 9 predicate places. [2024-06-21 20:25:43,681 INFO L495 AbstractCegarLoop]: Abstraction has has 70 places, 87 transitions, 526 flow [2024-06-21 20:25:43,681 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 20:25:43,681 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 20:25:43,682 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 20:25:43,682 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-06-21 20:25:43,682 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 20:25:43,682 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 20:25:43,682 INFO L85 PathProgramCache]: Analyzing trace with hash 2006274031, now seen corresponding path program 1 times [2024-06-21 20:25:43,683 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 20:25:43,683 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1136644760] [2024-06-21 20:25:43,683 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 20:25:43,683 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 20:25:43,702 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 20:25:43,995 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 20:25:43,996 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 20:25:43,996 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1136644760] [2024-06-21 20:25:43,996 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1136644760] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 20:25:43,996 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 20:25:43,996 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-06-21 20:25:43,997 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [846282193] [2024-06-21 20:25:43,997 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 20:25:43,997 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-06-21 20:25:43,997 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 20:25:43,998 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-06-21 20:25:43,998 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-06-21 20:25:44,002 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 16 out of 60 [2024-06-21 20:25:44,004 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 20:25:44,004 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 20:25:44,005 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 16 of 60 [2024-06-21 20:25:44,005 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 20:25:47,523 INFO L124 PetriNetUnfolderBase]: 32748/50082 cut-off events. [2024-06-21 20:25:47,524 INFO L125 PetriNetUnfolderBase]: For 128862/129597 co-relation queries the response was YES. [2024-06-21 20:25:47,717 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 20:25:47,954 INFO L140 encePairwiseOnDemand]: 51/60 looper letters, 160 selfloop transitions, 30 changer transitions 0/200 dead transitions. [2024-06-21 20:25:47,954 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 75 places, 200 transitions, 1442 flow [2024-06-21 20:25:47,955 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-21 20:25:47,955 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-21 20:25:47,956 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 229 transitions. [2024-06-21 20:25:47,956 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6361111111111111 [2024-06-21 20:25:47,956 INFO L175 Difference]: Start difference. First operand has 70 places, 87 transitions, 526 flow. Second operand 6 states and 229 transitions. [2024-06-21 20:25:47,956 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 75 places, 200 transitions, 1442 flow [2024-06-21 20:25:48,124 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 20:25:48,127 INFO L231 Difference]: Finished difference. Result has 78 places, 97 transitions, 718 flow [2024-06-21 20:25:48,127 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 20:25:48,129 INFO L281 CegarLoopForPetriNet]: 61 programPoint places, 17 predicate places. [2024-06-21 20:25:48,129 INFO L495 AbstractCegarLoop]: Abstraction has has 78 places, 97 transitions, 718 flow [2024-06-21 20:25:48,130 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 20:25:48,130 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 20:25:48,130 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 20:25:48,130 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-06-21 20:25:48,130 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 20:25:48,131 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 20:25:48,131 INFO L85 PathProgramCache]: Analyzing trace with hash -1372385419, now seen corresponding path program 1 times [2024-06-21 20:25:48,131 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 20:25:48,131 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2065481828] [2024-06-21 20:25:48,131 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 20:25:48,131 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 20:25:48,147 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 20:25:48,331 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 20:25:48,331 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 20:25:48,332 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2065481828] [2024-06-21 20:25:48,334 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2065481828] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 20:25:48,335 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 20:25:48,335 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-21 20:25:48,335 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1579409479] [2024-06-21 20:25:48,336 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 20:25:48,336 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-21 20:25:48,336 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 20:25:48,337 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-21 20:25:48,337 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2024-06-21 20:25:48,364 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 60 [2024-06-21 20:25:48,364 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 20:25:48,364 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 20:25:48,364 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 60 [2024-06-21 20:25:48,365 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 20:25:55,605 INFO L124 PetriNetUnfolderBase]: 52366/80679 cut-off events. [2024-06-21 20:25:55,606 INFO L125 PetriNetUnfolderBase]: For 272428/273353 co-relation queries the response was YES. [2024-06-21 20:25:55,851 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 20:25:56,246 INFO L140 encePairwiseOnDemand]: 47/60 looper letters, 241 selfloop transitions, 87 changer transitions 2/339 dead transitions. [2024-06-21 20:25:56,260 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 89 places, 339 transitions, 2699 flow [2024-06-21 20:25:56,260 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-21 20:25:56,261 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-21 20:25:56,261 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 428 transitions. [2024-06-21 20:25:56,262 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5944444444444444 [2024-06-21 20:25:56,262 INFO L175 Difference]: Start difference. First operand has 78 places, 97 transitions, 718 flow. Second operand 12 states and 428 transitions. [2024-06-21 20:25:56,262 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 89 places, 339 transitions, 2699 flow [2024-06-21 20:25:56,791 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 20:25:56,793 INFO L231 Difference]: Finished difference. Result has 97 places, 150 transitions, 1609 flow [2024-06-21 20:25:56,794 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 20:25:56,794 INFO L281 CegarLoopForPetriNet]: 61 programPoint places, 36 predicate places. [2024-06-21 20:25:56,794 INFO L495 AbstractCegarLoop]: Abstraction has has 97 places, 150 transitions, 1609 flow [2024-06-21 20:25:56,795 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 20:25:56,795 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 20:25:56,795 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 20:25:56,795 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-06-21 20:25:56,795 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 20:25:56,796 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 20:25:56,796 INFO L85 PathProgramCache]: Analyzing trace with hash -392731126, now seen corresponding path program 1 times [2024-06-21 20:25:56,796 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 20:25:56,796 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1948382912] [2024-06-21 20:25:56,796 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 20:25:56,796 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 20:25:56,813 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 20:25:57,136 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 20:25:57,136 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 20:25:57,136 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1948382912] [2024-06-21 20:25:57,137 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1948382912] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 20:25:57,137 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 20:25:57,137 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-21 20:25:57,137 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [81420425] [2024-06-21 20:25:57,137 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 20:25:57,137 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-21 20:25:57,138 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 20:25:57,138 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-21 20:25:57,139 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2024-06-21 20:25:57,152 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 60 [2024-06-21 20:25:57,152 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 20:25:57,153 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 20:25:57,153 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 60 [2024-06-21 20:25:57,153 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand