./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 7724a2de 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-7724a2d-m [2024-06-28 02:44:57,934 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-06-28 02:44:57,999 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-06-28 02:44:58,002 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-06-28 02:44:58,003 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-06-28 02:44:58,016 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-06-28 02:44:58,017 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-06-28 02:44:58,017 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-06-28 02:44:58,018 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-06-28 02:44:58,018 INFO L153 SettingsManager]: * Use memory slicer=true [2024-06-28 02:44:58,018 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-06-28 02:44:58,019 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-06-28 02:44:58,019 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-06-28 02:44:58,019 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-06-28 02:44:58,020 INFO L153 SettingsManager]: * Use SBE=true [2024-06-28 02:44:58,020 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-06-28 02:44:58,020 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-06-28 02:44:58,020 INFO L153 SettingsManager]: * sizeof long=4 [2024-06-28 02:44:58,021 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-06-28 02:44:58,021 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-06-28 02:44:58,021 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-06-28 02:44:58,022 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-06-28 02:44:58,022 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-06-28 02:44:58,022 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-06-28 02:44:58,022 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-06-28 02:44:58,022 INFO L153 SettingsManager]: * sizeof long double=12 [2024-06-28 02:44:58,023 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-06-28 02:44:58,023 INFO L153 SettingsManager]: * Use constant arrays=true [2024-06-28 02:44:58,023 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-06-28 02:44:58,023 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-06-28 02:44:58,023 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-06-28 02:44:58,024 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-06-28 02:44:58,024 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-06-28 02:44:58,024 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-06-28 02:44:58,024 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-06-28 02:44:58,024 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-06-28 02:44:58,025 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-06-28 02:44:58,025 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-06-28 02:44:58,025 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-06-28 02:44:58,025 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-06-28 02:44:58,025 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2024-06-28 02:44:58,026 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-06-28 02:44:58,026 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-06-28 02:44:58,026 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessparser: Only consider loop invariants -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Check unreachability of reach_error function -> false [2024-06-28 02:44:58,193 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-06-28 02:44:58,206 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-06-28 02:44:58,208 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-06-28 02:44:58,208 INFO L270 PluginConnector]: Initializing CDTParser... [2024-06-28 02:44:58,209 INFO L274 PluginConnector]: CDTParser initialized [2024-06-28 02:44:58,209 INFO L431 ainManager$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 [2024-06-28 02:44:59,211 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-06-28 02:44:59,462 INFO L384 CDTParser]: Found 1 translation units. [2024-06-28 02:44:59,465 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/goblint-regression/13-privatized_04-priv_multi_true.i [2024-06-28 02:44:59,480 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c6955eddf/f519a6167d5c4da6872911e2648f608c/FLAGd0bc7c61d [2024-06-28 02:44:59,490 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c6955eddf/f519a6167d5c4da6872911e2648f608c [2024-06-28 02:44:59,492 INFO L270 PluginConnector]: Initializing Witness Parser... [2024-06-28 02:44:59,492 INFO L274 PluginConnector]: Witness Parser initialized [2024-06-28 02:44:59,493 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/./goblint.2024-06-19_11-23-25.files/mutex-meet-nonrel/13-privatized_04-priv_multi_true.yml/witness.yml [2024-06-28 02:44:59,585 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-06-28 02:44:59,601 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2024-06-28 02:44:59,609 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-06-28 02:44:59,609 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-06-28 02:44:59,636 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-06-28 02:44:59,637 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.06 02:44:59" (1/2) ... [2024-06-28 02:44:59,643 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@a8f3c07 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.06 02:44:59, skipping insertion in model container [2024-06-28 02:44:59,643 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.06 02:44:59" (1/2) ... [2024-06-28 02:44:59,647 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@38ba21bf and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.06 02:44:59, skipping insertion in model container [2024-06-28 02:44:59,647 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 28.06 02:44:59" (2/2) ... [2024-06-28 02:44:59,647 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@a8f3c07 and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 28.06 02:44:59, skipping insertion in model container [2024-06-28 02:44:59,647 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 28.06 02:44:59" (2/2) ... [2024-06-28 02:44:59,648 INFO L83 nessWitnessExtractor]: Extracting all invariants from correctness witness [2024-06-28 02:44:59,693 INFO L95 edCorrectnessWitness]: Found the following entries in the witness: [2024-06-28 02:44:59,694 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))) [2024-06-28 02:44:59,694 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))) [2024-06-28 02:44:59,695 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))) [2024-06-28 02:44:59,695 INFO L103 edCorrectnessWitness]: ghost_variable multithreaded = 0 [2024-06-28 02:44:59,695 INFO L103 edCorrectnessWitness]: ghost_variable mutex_B_locked = 0 [2024-06-28 02:44:59,696 INFO L103 edCorrectnessWitness]: ghost_variable mutex_A_locked = 0 [2024-06-28 02:44:59,696 INFO L106 edCorrectnessWitness]: ghost_update [L1158-L1158] mutex_A_locked = 1; [2024-06-28 02:44:59,696 INFO L106 edCorrectnessWitness]: ghost_update [L1176-L1176] mutex_A_locked = 0; [2024-06-28 02:44:59,696 INFO L106 edCorrectnessWitness]: ghost_update [L1190-L1190] mutex_B_locked = 0; [2024-06-28 02:44:59,696 INFO L106 edCorrectnessWitness]: ghost_update [L1202-L1202] multithreaded = 1; [2024-06-28 02:44:59,696 INFO L106 edCorrectnessWitness]: ghost_update [L1210-L1210] mutex_A_locked = 0; [2024-06-28 02:44:59,696 INFO L106 edCorrectnessWitness]: ghost_update [L1206-L1206] mutex_A_locked = 1; [2024-06-28 02:44:59,697 INFO L106 edCorrectnessWitness]: ghost_update [L1161-L1161] mutex_A_locked = 0; [2024-06-28 02:44:59,697 INFO L106 edCorrectnessWitness]: ghost_update [L1171-L1171] mutex_B_locked = 1; [2024-06-28 02:44:59,697 INFO L106 edCorrectnessWitness]: ghost_update [L1168-L1168] mutex_A_locked = 1; [2024-06-28 02:44:59,697 INFO L106 edCorrectnessWitness]: ghost_update [L1209-L1209] mutex_B_locked = 0; [2024-06-28 02:44:59,697 INFO L106 edCorrectnessWitness]: ghost_update [L1174-L1174] mutex_B_locked = 0; [2024-06-28 02:44:59,697 INFO L106 edCorrectnessWitness]: ghost_update [L1187-L1187] mutex_B_locked = 1; [2024-06-28 02:44:59,697 INFO L106 edCorrectnessWitness]: ghost_update [L1207-L1207] mutex_B_locked = 1; [2024-06-28 02:44:59,739 INFO L177 MainTranslator]: Built tables and reachable declarations [2024-06-28 02:45:00,040 INFO L207 PostProcessor]: Analyzing one entry point: main [2024-06-28 02:45:00,051 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 [2024-06-28 02:45:00,132 INFO L207 PostProcessor]: Analyzing one entry point: main [2024-06-28 02:45:00,174 INFO L206 MainTranslator]: Completed translation [2024-06-28 02:45:00,174 INFO L201 PluginConnector]: Adding new model witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 28.06 02:45:00 WrapperNode [2024-06-28 02:45:00,174 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-06-28 02:45:00,175 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-06-28 02:45:00,175 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-06-28 02:45:00,175 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-06-28 02:45:00,182 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 28.06 02:45:00" (1/1) ... [2024-06-28 02:45:00,196 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 28.06 02:45:00" (1/1) ... [2024-06-28 02:45:00,218 INFO L138 Inliner]: procedures = 271, calls = 38, calls flagged for inlining = 5, calls inlined = 6, statements flattened = 118 [2024-06-28 02:45:00,218 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-06-28 02:45:00,219 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-06-28 02:45:00,219 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-06-28 02:45:00,219 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-06-28 02:45:00,230 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 28.06 02:45:00" (1/1) ... [2024-06-28 02:45:00,231 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 28.06 02:45:00" (1/1) ... [2024-06-28 02:45:00,238 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 28.06 02:45:00" (1/1) ... [2024-06-28 02:45:00,249 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]. [2024-06-28 02:45:00,249 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 28.06 02:45:00" (1/1) ... [2024-06-28 02:45:00,249 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 28.06 02:45:00" (1/1) ... [2024-06-28 02:45:00,265 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 28.06 02:45:00" (1/1) ... [2024-06-28 02:45:00,267 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 28.06 02:45:00" (1/1) ... [2024-06-28 02:45:00,270 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 28.06 02:45:00" (1/1) ... [2024-06-28 02:45:00,271 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 28.06 02:45:00" (1/1) ... [2024-06-28 02:45:00,284 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-06-28 02:45:00,284 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-06-28 02:45:00,284 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-06-28 02:45:00,285 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-06-28 02:45:00,285 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 28.06 02:45:00" (1/1) ... [2024-06-28 02:45:00,289 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-06-28 02:45:00,295 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-06-28 02:45:00,306 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) [2024-06-28 02:45:00,323 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 [2024-06-28 02:45:00,336 INFO L130 BoogieDeclarations]: Found specification of procedure generate [2024-06-28 02:45:00,336 INFO L138 BoogieDeclarations]: Found implementation of procedure generate [2024-06-28 02:45:00,336 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexUnlock [2024-06-28 02:45:00,336 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2024-06-28 02:45:00,336 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-06-28 02:45:00,337 INFO L130 BoogieDeclarations]: Found specification of procedure dispose [2024-06-28 02:45:00,337 INFO L138 BoogieDeclarations]: Found implementation of procedure dispose [2024-06-28 02:45:00,337 INFO L130 BoogieDeclarations]: Found specification of procedure process [2024-06-28 02:45:00,337 INFO L138 BoogieDeclarations]: Found implementation of procedure process [2024-06-28 02:45:00,337 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-06-28 02:45:00,337 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-06-28 02:45:00,337 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2024-06-28 02:45:00,337 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-06-28 02:45:00,337 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-06-28 02:45:00,339 WARN L214 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2024-06-28 02:45:00,567 INFO L244 CfgBuilder]: Building ICFG [2024-06-28 02:45:00,569 INFO L270 CfgBuilder]: Building CFG for each procedure with an implementation [2024-06-28 02:45:00,775 INFO L289 CfgBuilder]: Ommited future-live optimization because the input is a concurrent program. [2024-06-28 02:45:00,775 INFO L293 CfgBuilder]: Performing block encoding [2024-06-28 02:45:00,899 INFO L315 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-06-28 02:45:00,899 INFO L320 CfgBuilder]: Removed 4 assume(true) statements. [2024-06-28 02:45:00,900 INFO L201 PluginConnector]: Adding new model witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.06 02:45:00 BoogieIcfgContainer [2024-06-28 02:45:00,900 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-06-28 02:45:00,903 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-06-28 02:45:00,903 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-06-28 02:45:00,906 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-06-28 02:45:00,906 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.06 02:44:59" (1/4) ... [2024-06-28 02:45:00,907 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2b8c6991 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.06 02:45:00, skipping insertion in model container [2024-06-28 02:45:00,909 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 28.06 02:44:59" (2/4) ... [2024-06-28 02:45:00,910 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2b8c6991 and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CORRECTNESS_WITNESS 28.06 02:45:00, skipping insertion in model container [2024-06-28 02:45:00,911 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 28.06 02:45:00" (3/4) ... [2024-06-28 02:45:00,911 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2b8c6991 and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CORRECTNESS_WITNESS 28.06 02:45:00, skipping insertion in model container [2024-06-28 02:45:00,911 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.06 02:45:00" (4/4) ... [2024-06-28 02:45:00,912 INFO L112 eAbstractionObserver]: Analyzing ICFG 13-privatized_04-priv_multi_true.i [2024-06-28 02:45:00,925 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-06-28 02:45:00,925 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 3 error locations. [2024-06-28 02:45:00,926 INFO L522 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-06-28 02:45:00,965 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2024-06-28 02:45:00,994 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 64 places, 60 transitions, 132 flow [2024-06-28 02:45:01,020 INFO L124 PetriNetUnfolderBase]: 6/57 cut-off events. [2024-06-28 02:45:01,020 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-06-28 02:45:01,024 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. [2024-06-28 02:45:01,024 INFO L82 GeneralOperation]: Start removeDead. Operand has 64 places, 60 transitions, 132 flow [2024-06-28 02:45:01,028 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 61 places, 57 transitions, 123 flow [2024-06-28 02:45:01,041 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-06-28 02:45:01,049 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;@3e55d08c, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-06-28 02:45:01,049 INFO L358 AbstractCegarLoop]: Starting to check reachability of 6 error locations. [2024-06-28 02:45:01,053 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-06-28 02:45:01,053 INFO L124 PetriNetUnfolderBase]: 0/5 cut-off events. [2024-06-28 02:45:01,053 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-06-28 02:45:01,054 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:45:01,054 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2024-06-28 02:45:01,055 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)] === [2024-06-28 02:45:01,058 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:45:01,058 INFO L85 PathProgramCache]: Analyzing trace with hash 420320376, now seen corresponding path program 1 times [2024-06-28 02:45:01,065 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:45:01,065 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1662555565] [2024-06-28 02:45:01,065 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:45:01,066 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:45:01,221 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:45:01,417 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:45:01,418 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:45:01,418 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1662555565] [2024-06-28 02:45:01,418 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1662555565] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:45:01,418 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:45:01,419 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-06-28 02:45:01,420 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1358373323] [2024-06-28 02:45:01,420 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:45:01,426 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-06-28 02:45:01,429 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:45:01,446 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-06-28 02:45:01,447 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-06-28 02:45:01,453 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 16 out of 60 [2024-06-28 02:45:01,455 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) [2024-06-28 02:45:01,455 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:45:01,455 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 16 of 60 [2024-06-28 02:45:01,456 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:45:02,894 INFO L124 PetriNetUnfolderBase]: 13699/19840 cut-off events. [2024-06-28 02:45:02,894 INFO L125 PetriNetUnfolderBase]: For 51/51 co-relation queries the response was YES. [2024-06-28 02:45:02,929 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. [2024-06-28 02:45:02,962 INFO L140 encePairwiseOnDemand]: 51/60 looper letters, 50 selfloop transitions, 2 changer transitions 17/79 dead transitions. [2024-06-28 02:45:02,962 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 60 places, 79 transitions, 302 flow [2024-06-28 02:45:02,963 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-06-28 02:45:02,965 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-06-28 02:45:02,970 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 123 transitions. [2024-06-28 02:45:02,972 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6833333333333333 [2024-06-28 02:45:02,973 INFO L175 Difference]: Start difference. First operand has 61 places, 57 transitions, 123 flow. Second operand 3 states and 123 transitions. [2024-06-28 02:45:02,974 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 60 places, 79 transitions, 302 flow [2024-06-28 02:45:02,978 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 57 places, 79 transitions, 298 flow, removed 0 selfloop flow, removed 3 redundant places. [2024-06-28 02:45:02,982 INFO L231 Difference]: Finished difference. Result has 58 places, 45 transitions, 112 flow [2024-06-28 02:45:02,984 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} [2024-06-28 02:45:02,987 INFO L281 CegarLoopForPetriNet]: 61 programPoint places, -3 predicate places. [2024-06-28 02:45:02,988 INFO L495 AbstractCegarLoop]: Abstraction has has 58 places, 45 transitions, 112 flow [2024-06-28 02:45:02,988 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) [2024-06-28 02:45:02,988 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:45:02,988 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:45:02,989 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-06-28 02:45:02,989 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)] === [2024-06-28 02:45:02,989 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:45:02,989 INFO L85 PathProgramCache]: Analyzing trace with hash 1086374682, now seen corresponding path program 1 times [2024-06-28 02:45:02,990 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:45:02,990 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [397611498] [2024-06-28 02:45:02,990 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:45:02,990 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:45:03,026 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:45:03,222 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:45:03,222 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:45:03,223 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [397611498] [2024-06-28 02:45:03,223 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [397611498] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:45:03,224 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:45:03,224 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-06-28 02:45:03,224 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [23609867] [2024-06-28 02:45:03,224 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:45:03,225 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-06-28 02:45:03,226 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:45:03,226 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-06-28 02:45:03,226 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-06-28 02:45:03,233 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 60 [2024-06-28 02:45:03,233 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) [2024-06-28 02:45:03,233 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:45:03,233 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 60 [2024-06-28 02:45:03,234 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:45:04,193 INFO L124 PetriNetUnfolderBase]: 8998/13854 cut-off events. [2024-06-28 02:45:04,194 INFO L125 PetriNetUnfolderBase]: For 1547/1547 co-relation queries the response was YES. [2024-06-28 02:45:04,208 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. [2024-06-28 02:45:04,242 INFO L140 encePairwiseOnDemand]: 46/60 looper letters, 117 selfloop transitions, 19 changer transitions 0/145 dead transitions. [2024-06-28 02:45:04,243 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 55 places, 145 transitions, 601 flow [2024-06-28 02:45:04,243 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 02:45:04,243 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 02:45:04,244 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 251 transitions. [2024-06-28 02:45:04,245 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5976190476190476 [2024-06-28 02:45:04,245 INFO L175 Difference]: Start difference. First operand has 58 places, 45 transitions, 112 flow. Second operand 7 states and 251 transitions. [2024-06-28 02:45:04,245 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 55 places, 145 transitions, 601 flow [2024-06-28 02:45:04,246 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 54 places, 145 transitions, 598 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-06-28 02:45:04,248 INFO L231 Difference]: Finished difference. Result has 58 places, 62 transitions, 255 flow [2024-06-28 02:45:04,248 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} [2024-06-28 02:45:04,249 INFO L281 CegarLoopForPetriNet]: 61 programPoint places, -3 predicate places. [2024-06-28 02:45:04,249 INFO L495 AbstractCegarLoop]: Abstraction has has 58 places, 62 transitions, 255 flow [2024-06-28 02:45:04,249 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) [2024-06-28 02:45:04,250 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:45:04,250 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:45:04,250 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-06-28 02:45:04,250 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)] === [2024-06-28 02:45:04,250 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:45:04,250 INFO L85 PathProgramCache]: Analyzing trace with hash -805728438, now seen corresponding path program 1 times [2024-06-28 02:45:04,251 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:45:04,251 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [529814417] [2024-06-28 02:45:04,251 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:45:04,251 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:45:04,272 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:45:04,353 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:45:04,353 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:45:04,353 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [529814417] [2024-06-28 02:45:04,356 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [529814417] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:45:04,356 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:45:04,356 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-06-28 02:45:04,356 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [973362435] [2024-06-28 02:45:04,356 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:45:04,357 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-06-28 02:45:04,357 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:45:04,358 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-06-28 02:45:04,358 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-06-28 02:45:04,358 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 21 out of 60 [2024-06-28 02:45:04,358 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) [2024-06-28 02:45:04,358 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:45:04,359 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 21 of 60 [2024-06-28 02:45:04,359 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:45:05,584 INFO L124 PetriNetUnfolderBase]: 10722/17259 cut-off events. [2024-06-28 02:45:05,584 INFO L125 PetriNetUnfolderBase]: For 12413/13339 co-relation queries the response was YES. [2024-06-28 02:45:05,614 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. [2024-06-28 02:45:05,676 INFO L140 encePairwiseOnDemand]: 52/60 looper letters, 68 selfloop transitions, 16 changer transitions 0/98 dead transitions. [2024-06-28 02:45:05,676 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 60 places, 98 transitions, 550 flow [2024-06-28 02:45:05,677 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-06-28 02:45:05,677 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-06-28 02:45:05,679 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 121 transitions. [2024-06-28 02:45:05,679 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6722222222222223 [2024-06-28 02:45:05,680 INFO L175 Difference]: Start difference. First operand has 58 places, 62 transitions, 255 flow. Second operand 3 states and 121 transitions. [2024-06-28 02:45:05,680 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 60 places, 98 transitions, 550 flow [2024-06-28 02:45:05,703 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 59 places, 98 transitions, 542 flow, removed 2 selfloop flow, removed 1 redundant places. [2024-06-28 02:45:05,704 INFO L231 Difference]: Finished difference. Result has 60 places, 72 transitions, 354 flow [2024-06-28 02:45:05,704 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} [2024-06-28 02:45:05,705 INFO L281 CegarLoopForPetriNet]: 61 programPoint places, -1 predicate places. [2024-06-28 02:45:05,705 INFO L495 AbstractCegarLoop]: Abstraction has has 60 places, 72 transitions, 354 flow [2024-06-28 02:45:05,705 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) [2024-06-28 02:45:05,706 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:45:05,706 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:45:05,706 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-06-28 02:45:05,706 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)] === [2024-06-28 02:45:05,707 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:45:05,707 INFO L85 PathProgramCache]: Analyzing trace with hash 2002919975, now seen corresponding path program 1 times [2024-06-28 02:45:05,707 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:45:05,707 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [968412577] [2024-06-28 02:45:05,707 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:45:05,707 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:45:05,725 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:45:05,954 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:45:05,954 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:45:05,955 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [968412577] [2024-06-28 02:45:05,955 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [968412577] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:45:05,955 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:45:05,955 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-28 02:45:05,955 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1609097277] [2024-06-28 02:45:05,955 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:45:05,956 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-28 02:45:05,956 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:45:05,957 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-28 02:45:05,957 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2024-06-28 02:45:05,972 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 60 [2024-06-28 02:45:05,973 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) [2024-06-28 02:45:05,973 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:45:05,973 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 60 [2024-06-28 02:45:05,973 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:45:08,677 INFO L124 PetriNetUnfolderBase]: 24063/36381 cut-off events. [2024-06-28 02:45:08,677 INFO L125 PetriNetUnfolderBase]: For 52292/52863 co-relation queries the response was YES. [2024-06-28 02:45:08,748 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. [2024-06-28 02:45:08,978 INFO L140 encePairwiseOnDemand]: 49/60 looper letters, 175 selfloop transitions, 23 changer transitions 0/207 dead transitions. [2024-06-28 02:45:08,978 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 66 places, 207 transitions, 1352 flow [2024-06-28 02:45:08,979 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 02:45:08,979 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 02:45:08,980 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 256 transitions. [2024-06-28 02:45:08,981 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6095238095238096 [2024-06-28 02:45:08,981 INFO L175 Difference]: Start difference. First operand has 60 places, 72 transitions, 354 flow. Second operand 7 states and 256 transitions. [2024-06-28 02:45:08,981 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 66 places, 207 transitions, 1352 flow [2024-06-28 02:45:09,009 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 65 places, 207 transitions, 1307 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-06-28 02:45:09,012 INFO L231 Difference]: Finished difference. Result has 70 places, 87 transitions, 526 flow [2024-06-28 02:45:09,012 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} [2024-06-28 02:45:09,014 INFO L281 CegarLoopForPetriNet]: 61 programPoint places, 9 predicate places. [2024-06-28 02:45:09,014 INFO L495 AbstractCegarLoop]: Abstraction has has 70 places, 87 transitions, 526 flow [2024-06-28 02:45:09,014 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) [2024-06-28 02:45:09,014 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:45:09,014 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] [2024-06-28 02:45:09,015 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-06-28 02:45:09,015 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)] === [2024-06-28 02:45:09,015 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:45:09,015 INFO L85 PathProgramCache]: Analyzing trace with hash 2006274031, now seen corresponding path program 1 times [2024-06-28 02:45:09,015 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:45:09,016 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1156489880] [2024-06-28 02:45:09,016 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:45:09,016 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:45:09,032 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:45:09,263 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:45:09,263 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:45:09,264 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1156489880] [2024-06-28 02:45:09,264 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1156489880] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:45:09,264 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:45:09,264 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-06-28 02:45:09,264 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1528080581] [2024-06-28 02:45:09,264 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:45:09,265 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-06-28 02:45:09,265 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:45:09,265 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-06-28 02:45:09,265 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-06-28 02:45:09,269 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 16 out of 60 [2024-06-28 02:45:09,272 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) [2024-06-28 02:45:09,272 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:45:09,272 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 16 of 60 [2024-06-28 02:45:09,272 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:45:12,968 INFO L124 PetriNetUnfolderBase]: 32748/50082 cut-off events. [2024-06-28 02:45:12,969 INFO L125 PetriNetUnfolderBase]: For 128862/129597 co-relation queries the response was YES. [2024-06-28 02:45:13,090 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. [2024-06-28 02:45:13,267 INFO L140 encePairwiseOnDemand]: 51/60 looper letters, 160 selfloop transitions, 30 changer transitions 0/200 dead transitions. [2024-06-28 02:45:13,268 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 75 places, 200 transitions, 1442 flow [2024-06-28 02:45:13,268 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-28 02:45:13,268 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-28 02:45:13,269 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 229 transitions. [2024-06-28 02:45:13,269 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6361111111111111 [2024-06-28 02:45:13,269 INFO L175 Difference]: Start difference. First operand has 70 places, 87 transitions, 526 flow. Second operand 6 states and 229 transitions. [2024-06-28 02:45:13,269 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 75 places, 200 transitions, 1442 flow [2024-06-28 02:45:13,417 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 75 places, 200 transitions, 1436 flow, removed 3 selfloop flow, removed 0 redundant places. [2024-06-28 02:45:13,419 INFO L231 Difference]: Finished difference. Result has 78 places, 97 transitions, 718 flow [2024-06-28 02:45:13,420 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} [2024-06-28 02:45:13,422 INFO L281 CegarLoopForPetriNet]: 61 programPoint places, 17 predicate places. [2024-06-28 02:45:13,422 INFO L495 AbstractCegarLoop]: Abstraction has has 78 places, 97 transitions, 718 flow [2024-06-28 02:45:13,422 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) [2024-06-28 02:45:13,422 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:45:13,422 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] [2024-06-28 02:45:13,422 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-06-28 02:45:13,423 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)] === [2024-06-28 02:45:13,423 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:45:13,423 INFO L85 PathProgramCache]: Analyzing trace with hash -1372385419, now seen corresponding path program 1 times [2024-06-28 02:45:13,423 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:45:13,423 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1296513171] [2024-06-28 02:45:13,423 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:45:13,424 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:45:13,437 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:45:13,615 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:45:13,615 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:45:13,618 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1296513171] [2024-06-28 02:45:13,618 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1296513171] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:45:13,618 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:45:13,619 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 02:45:13,619 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1384361007] [2024-06-28 02:45:13,619 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:45:13,620 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 02:45:13,620 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:45:13,620 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 02:45:13,620 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2024-06-28 02:45:13,647 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 60 [2024-06-28 02:45:13,647 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) [2024-06-28 02:45:13,647 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:45:13,648 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 60 [2024-06-28 02:45:13,648 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:45:20,288 INFO L124 PetriNetUnfolderBase]: 52366/80679 cut-off events. [2024-06-28 02:45:20,289 INFO L125 PetriNetUnfolderBase]: For 272428/273353 co-relation queries the response was YES. [2024-06-28 02:45:20,536 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. [2024-06-28 02:45:20,749 INFO L140 encePairwiseOnDemand]: 47/60 looper letters, 241 selfloop transitions, 87 changer transitions 2/339 dead transitions. [2024-06-28 02:45:20,749 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 89 places, 339 transitions, 2699 flow [2024-06-28 02:45:20,750 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-28 02:45:20,750 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-28 02:45:20,750 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 428 transitions. [2024-06-28 02:45:20,751 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5944444444444444 [2024-06-28 02:45:20,751 INFO L175 Difference]: Start difference. First operand has 78 places, 97 transitions, 718 flow. Second operand 12 states and 428 transitions. [2024-06-28 02:45:20,751 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 89 places, 339 transitions, 2699 flow [2024-06-28 02:45:21,500 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 89 places, 339 transitions, 2687 flow, removed 6 selfloop flow, removed 0 redundant places. [2024-06-28 02:45:21,503 INFO L231 Difference]: Finished difference. Result has 97 places, 150 transitions, 1609 flow [2024-06-28 02:45:21,503 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} [2024-06-28 02:45:21,503 INFO L281 CegarLoopForPetriNet]: 61 programPoint places, 36 predicate places. [2024-06-28 02:45:21,504 INFO L495 AbstractCegarLoop]: Abstraction has has 97 places, 150 transitions, 1609 flow [2024-06-28 02:45:21,504 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) [2024-06-28 02:45:21,504 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:45:21,504 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] [2024-06-28 02:45:21,504 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-06-28 02:45:21,504 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)] === [2024-06-28 02:45:21,505 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:45:21,505 INFO L85 PathProgramCache]: Analyzing trace with hash -392731126, now seen corresponding path program 1 times [2024-06-28 02:45:21,505 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:45:21,505 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1595083694] [2024-06-28 02:45:21,505 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:45:21,505 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:45:21,522 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:45:21,821 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:45:21,821 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:45:21,821 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1595083694] [2024-06-28 02:45:21,822 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1595083694] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:45:21,822 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:45:21,822 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 02:45:21,822 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2099708384] [2024-06-28 02:45:21,822 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:45:21,822 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 02:45:21,823 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:45:21,823 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 02:45:21,824 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2024-06-28 02:45:21,837 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 60 [2024-06-28 02:45:21,838 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) [2024-06-28 02:45:21,838 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:45:21,838 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 60 [2024-06-28 02:45:21,838 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:45:32,275 INFO L124 PetriNetUnfolderBase]: 64920/102512 cut-off events. [2024-06-28 02:45:32,275 INFO L125 PetriNetUnfolderBase]: For 660036/662919 co-relation queries the response was YES. [2024-06-28 02:45:32,698 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. [2024-06-28 02:45:33,018 INFO L140 encePairwiseOnDemand]: 45/60 looper letters, 356 selfloop transitions, 97 changer transitions 0/462 dead transitions. [2024-06-28 02:45:33,018 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 113 places, 462 transitions, 4265 flow [2024-06-28 02:45:33,019 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2024-06-28 02:45:33,019 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17 states. [2024-06-28 02:45:33,020 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 579 transitions. [2024-06-28 02:45:33,020 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5676470588235294 [2024-06-28 02:45:33,020 INFO L175 Difference]: Start difference. First operand has 97 places, 150 transitions, 1609 flow. Second operand 17 states and 579 transitions. [2024-06-28 02:45:33,020 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 113 places, 462 transitions, 4265 flow [2024-06-28 02:45:37,363 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 112 places, 462 transitions, 4135 flow, removed 64 selfloop flow, removed 1 redundant places. [2024-06-28 02:45:37,367 INFO L231 Difference]: Finished difference. Result has 122 places, 221 transitions, 2832 flow [2024-06-28 02:45:37,367 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} [2024-06-28 02:45:37,368 INFO L281 CegarLoopForPetriNet]: 61 programPoint places, 61 predicate places. [2024-06-28 02:45:37,368 INFO L495 AbstractCegarLoop]: Abstraction has has 122 places, 221 transitions, 2832 flow [2024-06-28 02:45:37,368 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) [2024-06-28 02:45:37,368 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:45:37,368 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] [2024-06-28 02:45:37,369 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-06-28 02:45:37,369 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)] === [2024-06-28 02:45:37,369 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:45:37,369 INFO L85 PathProgramCache]: Analyzing trace with hash 106183732, now seen corresponding path program 1 times [2024-06-28 02:45:37,369 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:45:37,369 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [92557873] [2024-06-28 02:45:37,369 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:45:37,369 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:45:37,391 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:45:37,518 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:45:37,518 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:45:37,518 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [92557873] [2024-06-28 02:45:37,518 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [92557873] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:45:37,519 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:45:37,520 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-06-28 02:45:37,520 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [56609909] [2024-06-28 02:45:37,520 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:45:37,521 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-06-28 02:45:37,521 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:45:37,521 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-06-28 02:45:37,523 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-06-28 02:45:37,523 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 21 out of 60 [2024-06-28 02:45:37,524 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) [2024-06-28 02:45:37,524 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:45:37,524 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 21 of 60 [2024-06-28 02:45:37,524 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:45:38,207 INFO L124 PetriNetUnfolderBase]: 4390/7059 cut-off events. [2024-06-28 02:45:38,207 INFO L125 PetriNetUnfolderBase]: For 43492/43609 co-relation queries the response was YES. [2024-06-28 02:45:38,223 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. [2024-06-28 02:45:38,227 INFO L140 encePairwiseOnDemand]: 55/60 looper letters, 0 selfloop transitions, 0 changer transitions 68/68 dead transitions. [2024-06-28 02:45:38,228 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 104 places, 68 transitions, 570 flow [2024-06-28 02:45:38,228 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-06-28 02:45:38,228 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-06-28 02:45:38,228 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 130 transitions. [2024-06-28 02:45:38,229 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5416666666666666 [2024-06-28 02:45:38,229 INFO L175 Difference]: Start difference. First operand has 122 places, 221 transitions, 2832 flow. Second operand 4 states and 130 transitions. [2024-06-28 02:45:38,229 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 104 places, 68 transitions, 570 flow [2024-06-28 02:45:38,289 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 71 places, 68 transitions, 391 flow, removed 17 selfloop flow, removed 33 redundant places. [2024-06-28 02:45:38,289 INFO L231 Difference]: Finished difference. Result has 71 places, 0 transitions, 0 flow [2024-06-28 02:45:38,290 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} [2024-06-28 02:45:38,290 INFO L281 CegarLoopForPetriNet]: 61 programPoint places, 10 predicate places. [2024-06-28 02:45:38,290 INFO L495 AbstractCegarLoop]: Abstraction has has 71 places, 0 transitions, 0 flow [2024-06-28 02:45:38,290 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) [2024-06-28 02:45:38,292 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT (5 of 6 remaining) [2024-06-28 02:45:38,293 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (4 of 6 remaining) [2024-06-28 02:45:38,293 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (3 of 6 remaining) [2024-06-28 02:45:38,293 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (2 of 6 remaining) [2024-06-28 02:45:38,293 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 6 remaining) [2024-06-28 02:45:38,293 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 6 remaining) [2024-06-28 02:45:38,293 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-06-28 02:45:38,294 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:45:38,296 INFO L229 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2024-06-28 02:45:38,296 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2024-06-28 02:45:38,299 INFO L507 ceAbstractionStarter]: Automizer considered 3 witness invariants [2024-06-28 02:45:38,299 INFO L508 ceAbstractionStarter]: WitnessConsidered=3 [2024-06-28 02:45:38,300 INFO L201 PluginConnector]: Adding new model witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 28.06 02:45:38 BasicIcfg [2024-06-28 02:45:38,300 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2024-06-28 02:45:38,300 INFO L158 Benchmark]: Toolchain (without parser) took 38699.48ms. Allocated memory was 165.7MB in the beginning and 13.2GB in the end (delta: 13.1GB). Free memory was 137.6MB in the beginning and 10.9GB in the end (delta: -10.8GB). Peak memory consumption was 2.8GB. Max. memory is 16.1GB. [2024-06-28 02:45:38,301 INFO L158 Benchmark]: CDTParser took 0.14ms. Allocated memory is still 104.9MB. Free memory is still 68.4MB. There was no memory consumed. Max. memory is 16.1GB. [2024-06-28 02:45:38,301 INFO L158 Benchmark]: Witness Parser took 0.45ms. Allocated memory is still 165.7MB. Free memory is still 93.9MB. There was no memory consumed. Max. memory is 16.1GB. [2024-06-28 02:45:38,301 INFO L158 Benchmark]: CACSL2BoogieTranslator took 565.52ms. Allocated memory is still 165.7MB. Free memory was 137.6MB in the beginning and 96.4MB in the end (delta: 41.3MB). Peak memory consumption was 39.8MB. Max. memory is 16.1GB. [2024-06-28 02:45:38,301 INFO L158 Benchmark]: Boogie Procedure Inliner took 43.79ms. Allocated memory is still 165.7MB. Free memory was 96.4MB in the beginning and 93.4MB in the end (delta: 2.9MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2024-06-28 02:45:38,301 INFO L158 Benchmark]: Boogie Preprocessor took 64.92ms. Allocated memory is still 165.7MB. Free memory was 93.4MB in the beginning and 90.1MB in the end (delta: 3.4MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2024-06-28 02:45:38,302 INFO L158 Benchmark]: RCFGBuilder took 615.91ms. Allocated memory is still 165.7MB. Free memory was 89.6MB in the beginning and 102.3MB in the end (delta: -12.6MB). Peak memory consumption was 21.8MB. Max. memory is 16.1GB. [2024-06-28 02:45:38,302 INFO L158 Benchmark]: TraceAbstraction took 37396.83ms. Allocated memory was 165.7MB in the beginning and 13.2GB in the end (delta: 13.1GB). Free memory was 101.8MB in the beginning and 10.9GB in the end (delta: -10.8GB). Peak memory consumption was 2.8GB. Max. memory is 16.1GB. [2024-06-28 02:45:38,303 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.14ms. Allocated memory is still 104.9MB. Free memory is still 68.4MB. There was no memory consumed. Max. memory is 16.1GB. * Witness Parser took 0.45ms. Allocated memory is still 165.7MB. Free memory is still 93.9MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 565.52ms. Allocated memory is still 165.7MB. Free memory was 137.6MB in the beginning and 96.4MB in the end (delta: 41.3MB). Peak memory consumption was 39.8MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 43.79ms. Allocated memory is still 165.7MB. Free memory was 96.4MB in the beginning and 93.4MB in the end (delta: 2.9MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * Boogie Preprocessor took 64.92ms. Allocated memory is still 165.7MB. Free memory was 93.4MB in the beginning and 90.1MB in the end (delta: 3.4MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 615.91ms. Allocated memory is still 165.7MB. Free memory was 89.6MB in the beginning and 102.3MB in the end (delta: -12.6MB). Peak memory consumption was 21.8MB. Max. memory is 16.1GB. * TraceAbstraction took 37396.83ms. Allocated memory was 165.7MB in the beginning and 13.2GB in the end (delta: 13.1GB). Free memory was 101.8MB in the beginning and 10.9GB in the end (delta: -10.8GB). Peak memory consumption was 2.8GB. 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: 37.3s, OverallIterations: 8, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 35.3s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 958 SdHoareTripleChecker+Valid, 1.5s 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! [2024-06-28 02:45:38,330 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: TRUE