./Ultimate.py --spec ../../../trunk/examples/svcomp/properties/unreach-call.prp --file ../../../trunk/examples/svcomp/goblint-regression/13-privatized_31-traces-mine-vs-mutex_true.i --full-output --witness-type correctness_witness --witnessparser.only.consider.loop.invariants false --validate ./goblint.2024-05-07_14-17-48.files/protection/13-privatized_31-traces-mine-vs-mutex_true.yml/witness.yml --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version b44c8288 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_31-traces-mine-vs-mutex_true.i ./goblint.2024-05-07_14-17-48.files/protection/13-privatized_31-traces-mine-vs-mutex_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 --- Real Ultimate output --- This is Ultimate 0.2.4-wip.fs.witness-ghost-b44c828-m [2024-05-12 12:52:29,507 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-05-12 12:52:29,600 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-05-12 12:52:29,606 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-05-12 12:52:29,606 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-05-12 12:52:29,633 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-05-12 12:52:29,633 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-05-12 12:52:29,634 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-05-12 12:52:29,634 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-05-12 12:52:29,638 INFO L153 SettingsManager]: * Use memory slicer=true [2024-05-12 12:52:29,639 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-05-12 12:52:29,639 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-05-12 12:52:29,639 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-05-12 12:52:29,641 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-05-12 12:52:29,641 INFO L153 SettingsManager]: * Use SBE=true [2024-05-12 12:52:29,641 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-05-12 12:52:29,641 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-05-12 12:52:29,642 INFO L153 SettingsManager]: * sizeof long=4 [2024-05-12 12:52:29,642 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-05-12 12:52:29,642 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-05-12 12:52:29,642 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-05-12 12:52:29,643 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-05-12 12:52:29,643 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-05-12 12:52:29,643 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-05-12 12:52:29,643 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-05-12 12:52:29,644 INFO L153 SettingsManager]: * sizeof long double=12 [2024-05-12 12:52:29,644 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-05-12 12:52:29,644 INFO L153 SettingsManager]: * Use constant arrays=true [2024-05-12 12:52:29,645 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-05-12 12:52:29,645 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-05-12 12:52:29,646 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-05-12 12:52:29,646 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-05-12 12:52:29,646 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-05-12 12:52:29,647 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-05-12 12:52:29,647 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-05-12 12:52:29,647 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-05-12 12:52:29,647 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-05-12 12:52:29,647 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-05-12 12:52:29,648 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-05-12 12:52:29,648 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-05-12 12:52:29,648 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2024-05-12 12:52:29,648 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-05-12 12:52:29,648 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-05-12 12:52:29,649 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessparser: Only consider loop invariants -> false [2024-05-12 12:52:29,898 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-05-12 12:52:29,921 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-05-12 12:52:29,923 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-05-12 12:52:29,924 INFO L270 PluginConnector]: Initializing Witness Parser... [2024-05-12 12:52:29,925 INFO L274 PluginConnector]: Witness Parser initialized [2024-05-12 12:52:29,926 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/./goblint.2024-05-07_14-17-48.files/protection/13-privatized_31-traces-mine-vs-mutex_true.yml/witness.yml [2024-05-12 12:52:30,060 INFO L270 PluginConnector]: Initializing CDTParser... [2024-05-12 12:52:30,061 INFO L274 PluginConnector]: CDTParser initialized [2024-05-12 12:52:30,061 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/goblint-regression/13-privatized_31-traces-mine-vs-mutex_true.i [2024-05-12 12:52:31,259 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-05-12 12:52:31,548 INFO L384 CDTParser]: Found 1 translation units. [2024-05-12 12:52:31,551 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/goblint-regression/13-privatized_31-traces-mine-vs-mutex_true.i [2024-05-12 12:52:31,563 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/3b1e9afd1/d6edbb32afcb4e62b72e8c0893b56b51/FLAG624ec9b94 [2024-05-12 12:52:31,575 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/3b1e9afd1/d6edbb32afcb4e62b72e8c0893b56b51 [2024-05-12 12:52:31,575 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-05-12 12:52:31,577 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2024-05-12 12:52:31,578 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-05-12 12:52:31,578 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-05-12 12:52:31,583 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-05-12 12:52:31,583 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 12.05 12:52:30" (1/2) ... [2024-05-12 12:52:31,584 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4627ca98 and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 12.05 12:52:31, skipping insertion in model container [2024-05-12 12:52:31,585 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 12.05 12:52:30" (1/2) ... [2024-05-12 12:52:31,586 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@135fd5c0 and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 12.05 12:52:31, skipping insertion in model container [2024-05-12 12:52:31,586 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.05 12:52:31" (2/2) ... [2024-05-12 12:52:31,586 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4627ca98 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.05 12:52:31, skipping insertion in model container [2024-05-12 12:52:31,587 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.05 12:52:31" (2/2) ... [2024-05-12 12:52:31,587 INFO L83 nessWitnessExtractor]: Extracting all invariants from correctness witness [2024-05-12 12:52:31,625 INFO L95 edCorrectnessWitness]: Found the following entries in the witness: [2024-05-12 12:52:31,626 INFO L97 edCorrectnessWitness]: Location invariant before [L698-L698] ! multithreaded || 0 <= g [2024-05-12 12:52:31,627 INFO L103 edCorrectnessWitness]: ghost_variable B_locked = 0 [2024-05-12 12:52:31,627 INFO L103 edCorrectnessWitness]: ghost_variable multithreaded = 0 [2024-05-12 12:52:31,627 INFO L103 edCorrectnessWitness]: ghost_variable A_locked = 0 [2024-05-12 12:52:31,628 INFO L106 edCorrectnessWitness]: ghost_update [L703-L703] B_locked = 0; [2024-05-12 12:52:31,629 INFO L106 edCorrectnessWitness]: ghost_update [L686-L686] B_locked = 1; [2024-05-12 12:52:31,629 INFO L106 edCorrectnessWitness]: ghost_update [L701-L701] B_locked = 1; [2024-05-12 12:52:31,629 INFO L106 edCorrectnessWitness]: ghost_update [L688-L688] B_locked = 0; [2024-05-12 12:52:31,629 INFO L106 edCorrectnessWitness]: ghost_update [L699-L699] B_locked = 0; [2024-05-12 12:52:31,629 INFO L106 edCorrectnessWitness]: ghost_update [L704-L704] A_locked = 0; [2024-05-12 12:52:31,629 INFO L106 edCorrectnessWitness]: ghost_update [L700-L700] A_locked = 1; [2024-05-12 12:52:31,630 INFO L106 edCorrectnessWitness]: ghost_update [L692-L692] A_locked = 0; [2024-05-12 12:52:31,630 INFO L106 edCorrectnessWitness]: ghost_update [L691-L691] B_locked = 0; [2024-05-12 12:52:31,630 INFO L106 edCorrectnessWitness]: ghost_update [L689-L689] B_locked = 1; [2024-05-12 12:52:31,630 INFO L106 edCorrectnessWitness]: ghost_update [L697-L697] multithreaded = 1; [2024-05-12 12:52:31,630 INFO L106 edCorrectnessWitness]: ghost_update [L685-L685] A_locked = 1; [2024-05-12 12:52:31,631 INFO L106 edCorrectnessWitness]: ghost_update [L698-L698] B_locked = 1; [2024-05-12 12:52:31,675 INFO L177 MainTranslator]: Built tables and reachable declarations [2024-05-12 12:52:31,815 WARN L246 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/goblint-regression/13-privatized_31-traces-mine-vs-mutex_true.i[1097,1110] [2024-05-12 12:52:31,984 INFO L207 PostProcessor]: Analyzing one entry point: main [2024-05-12 12:52:31,996 INFO L202 MainTranslator]: Completed pre-run Start Parsing Local Start Parsing Local Start Parsing Local [2024-05-12 12:52:32,036 WARN L246 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/goblint-regression/13-privatized_31-traces-mine-vs-mutex_true.i[1097,1110] 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 [2024-05-12 12:52:32,099 INFO L207 PostProcessor]: Analyzing one entry point: main [2024-05-12 12:52:32,130 INFO L206 MainTranslator]: Completed translation [2024-05-12 12:52:32,130 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.05 12:52:32 WrapperNode [2024-05-12 12:52:32,130 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-05-12 12:52:32,132 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-05-12 12:52:32,132 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-05-12 12:52:32,132 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-05-12 12:52:32,138 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.05 12:52:32" (1/1) ... [2024-05-12 12:52:32,148 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.05 12:52:32" (1/1) ... [2024-05-12 12:52:32,166 INFO L138 Inliner]: procedures = 163, calls = 37, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 75 [2024-05-12 12:52:32,167 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-05-12 12:52:32,167 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-05-12 12:52:32,168 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-05-12 12:52:32,168 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-05-12 12:52:32,177 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.05 12:52:32" (1/1) ... [2024-05-12 12:52:32,178 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.05 12:52:32" (1/1) ... [2024-05-12 12:52:32,181 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.05 12:52:32" (1/1) ... [2024-05-12 12:52:32,194 INFO L175 MemorySlicer]: Split 14 memory accesses to 4 slices as follows [2, 5, 5, 2]. 36 percent of accesses are in the largest equivalence class. The 12 initializations are split as follows [2, 5, 5, 0]. The 1 writes are split as follows [0, 0, 0, 1]. [2024-05-12 12:52:32,195 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.05 12:52:32" (1/1) ... [2024-05-12 12:52:32,195 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.05 12:52:32" (1/1) ... [2024-05-12 12:52:32,204 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.05 12:52:32" (1/1) ... [2024-05-12 12:52:32,206 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.05 12:52:32" (1/1) ... [2024-05-12 12:52:32,207 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.05 12:52:32" (1/1) ... [2024-05-12 12:52:32,208 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.05 12:52:32" (1/1) ... [2024-05-12 12:52:32,211 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-05-12 12:52:32,211 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-05-12 12:52:32,211 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-05-12 12:52:32,211 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-05-12 12:52:32,227 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.05 12:52:32" (1/1) ... [2024-05-12 12:52:32,233 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-05-12 12:52:32,241 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-05-12 12:52:32,264 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) [2024-05-12 12:52:32,288 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 [2024-05-12 12:52:32,304 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2024-05-12 12:52:32,304 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2024-05-12 12:52:32,306 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#2 [2024-05-12 12:52:32,307 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#3 [2024-05-12 12:52:32,307 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-05-12 12:52:32,307 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2024-05-12 12:52:32,307 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#2 [2024-05-12 12:52:32,307 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#3 [2024-05-12 12:52:32,307 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2024-05-12 12:52:32,308 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-05-12 12:52:32,308 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2024-05-12 12:52:32,308 INFO L130 BoogieDeclarations]: Found specification of procedure t_fun [2024-05-12 12:52:32,308 INFO L138 BoogieDeclarations]: Found implementation of procedure t_fun [2024-05-12 12:52:32,308 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2024-05-12 12:52:32,309 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-05-12 12:52:32,309 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-05-12 12:52:32,309 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2024-05-12 12:52:32,309 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#3 [2024-05-12 12:52:32,310 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexUnlock [2024-05-12 12:52:32,310 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-05-12 12:52:32,311 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-05-12 12:52:32,312 WARN L214 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2024-05-12 12:52:32,491 INFO L244 CfgBuilder]: Building ICFG [2024-05-12 12:52:32,494 INFO L270 CfgBuilder]: Building CFG for each procedure with an implementation [2024-05-12 12:52:32,726 INFO L289 CfgBuilder]: Ommited future-live optimization because the input is a concurrent program. [2024-05-12 12:52:32,726 INFO L293 CfgBuilder]: Performing block encoding [2024-05-12 12:52:32,887 INFO L315 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-05-12 12:52:32,891 INFO L320 CfgBuilder]: Removed 0 assume(true) statements. [2024-05-12 12:52:32,891 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.05 12:52:32 BoogieIcfgContainer [2024-05-12 12:52:32,893 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-05-12 12:52:32,894 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-05-12 12:52:32,896 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-05-12 12:52:32,899 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-05-12 12:52:32,899 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 12.05 12:52:30" (1/4) ... [2024-05-12 12:52:32,900 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2bc59d2a and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CORRECTNESS_WITNESS 12.05 12:52:32, skipping insertion in model container [2024-05-12 12:52:32,900 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 12.05 12:52:31" (2/4) ... [2024-05-12 12:52:32,901 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2bc59d2a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.05 12:52:32, skipping insertion in model container [2024-05-12 12:52:32,901 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.05 12:52:32" (3/4) ... [2024-05-12 12:52:32,902 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2bc59d2a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.05 12:52:32, skipping insertion in model container [2024-05-12 12:52:32,902 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.05 12:52:32" (4/4) ... [2024-05-12 12:52:32,903 INFO L112 eAbstractionObserver]: Analyzing ICFG 13-privatized_31-traces-mine-vs-mutex_true.i [2024-05-12 12:52:32,919 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-05-12 12:52:32,919 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2024-05-12 12:52:32,920 INFO L522 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-05-12 12:52:32,948 INFO L144 ThreadInstanceAdder]: Constructed 1 joinOtherThreadTransitions. [2024-05-12 12:52:32,975 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 43 places, 40 transitions, 87 flow [2024-05-12 12:52:33,001 INFO L124 PetriNetUnfolderBase]: 1/39 cut-off events. [2024-05-12 12:52:33,002 INFO L125 PetriNetUnfolderBase]: For 1/1 co-relation queries the response was YES. [2024-05-12 12:52:33,006 INFO L83 FinitePrefix]: Finished finitePrefix Result has 44 conditions, 39 events. 1/39 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 35 event pairs, 0 based on Foata normal form. 0/36 useless extension candidates. Maximal degree in co-relation 33. Up to 2 conditions per place. [2024-05-12 12:52:33,006 INFO L82 GeneralOperation]: Start removeDead. Operand has 43 places, 40 transitions, 87 flow [2024-05-12 12:52:33,012 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 34 places, 30 transitions, 63 flow [2024-05-12 12:52:33,021 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-05-12 12:52:33,027 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;@601beefe, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-05-12 12:52:33,027 INFO L358 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2024-05-12 12:52:33,031 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-05-12 12:52:33,031 INFO L124 PetriNetUnfolderBase]: 0/7 cut-off events. [2024-05-12 12:52:33,032 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-05-12 12:52:33,032 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 12:52:33,032 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1] [2024-05-12 12:52:33,033 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-05-12 12:52:33,037 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 12:52:33,038 INFO L85 PathProgramCache]: Analyzing trace with hash -1044823537, now seen corresponding path program 1 times [2024-05-12 12:52:33,046 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 12:52:33,046 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1955066141] [2024-05-12 12:52:33,046 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 12:52:33,047 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 12:52:33,208 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 12:52:33,381 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-05-12 12:52:33,382 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 12:52:33,382 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1955066141] [2024-05-12 12:52:33,383 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1955066141] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 12:52:33,383 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 12:52:33,383 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-05-12 12:52:33,384 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [231052910] [2024-05-12 12:52:33,385 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 12:52:33,393 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-05-12 12:52:33,398 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 12:52:33,433 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-05-12 12:52:33,434 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-05-12 12:52:33,443 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 40 [2024-05-12 12:52:33,447 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 34 places, 30 transitions, 63 flow. Second operand has 3 states, 3 states have (on average 15.0) internal successors, (45), 3 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 12:52:33,447 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 12:52:33,447 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 40 [2024-05-12 12:52:33,448 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 12:52:33,559 INFO L124 PetriNetUnfolderBase]: 60/175 cut-off events. [2024-05-12 12:52:33,560 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-05-12 12:52:33,560 INFO L83 FinitePrefix]: Finished finitePrefix Result has 320 conditions, 175 events. 60/175 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 13. Compared 683 event pairs, 18 based on Foata normal form. 3/176 useless extension candidates. Maximal degree in co-relation 307. Up to 105 conditions per place. [2024-05-12 12:52:33,562 INFO L140 encePairwiseOnDemand]: 37/40 looper letters, 24 selfloop transitions, 2 changer transitions 0/36 dead transitions. [2024-05-12 12:52:33,563 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 36 places, 36 transitions, 127 flow [2024-05-12 12:52:33,564 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-05-12 12:52:33,567 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-05-12 12:52:33,573 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 66 transitions. [2024-05-12 12:52:33,575 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.55 [2024-05-12 12:52:33,577 INFO L175 Difference]: Start difference. First operand has 34 places, 30 transitions, 63 flow. Second operand 3 states and 66 transitions. [2024-05-12 12:52:33,577 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 36 places, 36 transitions, 127 flow [2024-05-12 12:52:33,580 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 35 places, 36 transitions, 126 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-05-12 12:52:33,582 INFO L231 Difference]: Finished difference. Result has 36 places, 30 transitions, 70 flow [2024-05-12 12:52:33,584 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=62, PETRI_DIFFERENCE_MINUEND_PLACES=33, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=30, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=28, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=70, PETRI_PLACES=36, PETRI_TRANSITIONS=30} [2024-05-12 12:52:33,587 INFO L281 CegarLoopForPetriNet]: 34 programPoint places, 2 predicate places. [2024-05-12 12:52:33,587 INFO L495 AbstractCegarLoop]: Abstraction has has 36 places, 30 transitions, 70 flow [2024-05-12 12:52:33,588 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 15.0) internal successors, (45), 3 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 12:52:33,588 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 12:52:33,588 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 12:52:33,588 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-05-12 12:52:33,588 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-05-12 12:52:33,590 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 12:52:33,591 INFO L85 PathProgramCache]: Analyzing trace with hash 613194146, now seen corresponding path program 1 times [2024-05-12 12:52:33,591 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 12:52:33,591 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [118969202] [2024-05-12 12:52:33,591 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 12:52:33,592 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 12:52:33,634 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 12:52:33,737 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-05-12 12:52:33,738 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 12:52:33,738 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [118969202] [2024-05-12 12:52:33,739 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [118969202] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 12:52:33,739 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 12:52:33,739 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-05-12 12:52:33,739 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [690155347] [2024-05-12 12:52:33,740 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 12:52:33,741 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-05-12 12:52:33,741 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 12:52:33,742 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-05-12 12:52:33,742 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-05-12 12:52:33,748 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 40 [2024-05-12 12:52:33,749 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 36 places, 30 transitions, 70 flow. Second operand has 4 states, 4 states have (on average 15.25) internal successors, (61), 4 states have internal predecessors, (61), 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) [2024-05-12 12:52:33,752 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 12:52:33,752 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 40 [2024-05-12 12:52:33,752 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 12:52:33,849 INFO L124 PetriNetUnfolderBase]: 57/168 cut-off events. [2024-05-12 12:52:33,850 INFO L125 PetriNetUnfolderBase]: For 12/12 co-relation queries the response was YES. [2024-05-12 12:52:33,850 INFO L83 FinitePrefix]: Finished finitePrefix Result has 327 conditions, 168 events. 57/168 cut-off events. For 12/12 co-relation queries the response was YES. Maximal size of possible extension queue 14. Compared 662 event pairs, 15 based on Foata normal form. 3/169 useless extension candidates. Maximal degree in co-relation 312. Up to 60 conditions per place. [2024-05-12 12:52:33,851 INFO L140 encePairwiseOnDemand]: 36/40 looper letters, 29 selfloop transitions, 3 changer transitions 0/42 dead transitions. [2024-05-12 12:52:33,852 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 39 places, 42 transitions, 158 flow [2024-05-12 12:52:33,853 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-05-12 12:52:33,853 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-05-12 12:52:33,854 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 85 transitions. [2024-05-12 12:52:33,854 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.53125 [2024-05-12 12:52:33,855 INFO L175 Difference]: Start difference. First operand has 36 places, 30 transitions, 70 flow. Second operand 4 states and 85 transitions. [2024-05-12 12:52:33,856 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 39 places, 42 transitions, 158 flow [2024-05-12 12:52:33,857 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 37 places, 42 transitions, 154 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-05-12 12:52:33,858 INFO L231 Difference]: Finished difference. Result has 38 places, 30 transitions, 76 flow [2024-05-12 12:52:33,858 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=66, PETRI_DIFFERENCE_MINUEND_PLACES=34, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=30, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=27, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=76, PETRI_PLACES=38, PETRI_TRANSITIONS=30} [2024-05-12 12:52:33,859 INFO L281 CegarLoopForPetriNet]: 34 programPoint places, 4 predicate places. [2024-05-12 12:52:33,859 INFO L495 AbstractCegarLoop]: Abstraction has has 38 places, 30 transitions, 76 flow [2024-05-12 12:52:33,859 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 15.25) internal successors, (61), 4 states have internal predecessors, (61), 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) [2024-05-12 12:52:33,859 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 12:52:33,859 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 12:52:33,860 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-05-12 12:52:33,860 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-05-12 12:52:33,860 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 12:52:33,860 INFO L85 PathProgramCache]: Analyzing trace with hash 1957265760, now seen corresponding path program 1 times [2024-05-12 12:52:33,861 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 12:52:33,861 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [74940901] [2024-05-12 12:52:33,861 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 12:52:33,861 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 12:52:33,878 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 12:52:33,944 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-05-12 12:52:33,945 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 12:52:33,945 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [74940901] [2024-05-12 12:52:33,945 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [74940901] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 12:52:33,945 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 12:52:33,946 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-05-12 12:52:33,946 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2025028136] [2024-05-12 12:52:33,946 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 12:52:33,946 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-05-12 12:52:33,947 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 12:52:33,947 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-05-12 12:52:33,947 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-05-12 12:52:33,951 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 40 [2024-05-12 12:52:33,951 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 38 places, 30 transitions, 76 flow. Second operand has 5 states, 5 states have (on average 15.4) internal successors, (77), 5 states have internal predecessors, (77), 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) [2024-05-12 12:52:33,952 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 12:52:33,952 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 40 [2024-05-12 12:52:33,952 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 12:52:34,013 INFO L124 PetriNetUnfolderBase]: 54/161 cut-off events. [2024-05-12 12:52:34,013 INFO L125 PetriNetUnfolderBase]: For 29/29 co-relation queries the response was YES. [2024-05-12 12:52:34,014 INFO L83 FinitePrefix]: Finished finitePrefix Result has 324 conditions, 161 events. 54/161 cut-off events. For 29/29 co-relation queries the response was YES. Maximal size of possible extension queue 12. Compared 621 event pairs, 12 based on Foata normal form. 4/164 useless extension candidates. Maximal degree in co-relation 308. Up to 52 conditions per place. [2024-05-12 12:52:34,015 INFO L140 encePairwiseOnDemand]: 36/40 looper letters, 28 selfloop transitions, 3 changer transitions 0/41 dead transitions. [2024-05-12 12:52:34,015 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 41 places, 41 transitions, 156 flow [2024-05-12 12:52:34,016 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-05-12 12:52:34,016 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-05-12 12:52:34,017 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 97 transitions. [2024-05-12 12:52:34,017 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.485 [2024-05-12 12:52:34,018 INFO L175 Difference]: Start difference. First operand has 38 places, 30 transitions, 76 flow. Second operand 5 states and 97 transitions. [2024-05-12 12:52:34,018 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 41 places, 41 transitions, 156 flow [2024-05-12 12:52:34,019 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 36 places, 41 transitions, 146 flow, removed 0 selfloop flow, removed 5 redundant places. [2024-05-12 12:52:34,019 INFO L231 Difference]: Finished difference. Result has 36 places, 29 transitions, 66 flow [2024-05-12 12:52:34,020 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=60, PETRI_DIFFERENCE_MINUEND_PLACES=32, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=29, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=26, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=66, PETRI_PLACES=36, PETRI_TRANSITIONS=29} [2024-05-12 12:52:34,020 INFO L281 CegarLoopForPetriNet]: 34 programPoint places, 2 predicate places. [2024-05-12 12:52:34,020 INFO L495 AbstractCegarLoop]: Abstraction has has 36 places, 29 transitions, 66 flow [2024-05-12 12:52:34,021 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 15.4) internal successors, (77), 5 states have internal predecessors, (77), 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) [2024-05-12 12:52:34,021 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 12:52:34,021 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 12:52:34,021 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-05-12 12:52:34,021 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-05-12 12:52:34,022 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 12:52:34,022 INFO L85 PathProgramCache]: Analyzing trace with hash 683611741, now seen corresponding path program 1 times [2024-05-12 12:52:34,022 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 12:52:34,022 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [508685726] [2024-05-12 12:52:34,023 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 12:52:34,023 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 12:52:34,038 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 12:52:34,124 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-05-12 12:52:34,124 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 12:52:34,125 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [508685726] [2024-05-12 12:52:34,125 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [508685726] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 12:52:34,125 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 12:52:34,125 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-05-12 12:52:34,126 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1796242482] [2024-05-12 12:52:34,126 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 12:52:34,126 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-05-12 12:52:34,126 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 12:52:34,128 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-05-12 12:52:34,128 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-05-12 12:52:34,136 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 40 [2024-05-12 12:52:34,137 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 36 places, 29 transitions, 66 flow. Second operand has 4 states, 4 states have (on average 13.75) internal successors, (55), 4 states have internal predecessors, (55), 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) [2024-05-12 12:52:34,137 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 12:52:34,137 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 40 [2024-05-12 12:52:34,137 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 12:52:34,236 INFO L124 PetriNetUnfolderBase]: 59/181 cut-off events. [2024-05-12 12:52:34,237 INFO L125 PetriNetUnfolderBase]: For 8/8 co-relation queries the response was YES. [2024-05-12 12:52:34,239 INFO L83 FinitePrefix]: Finished finitePrefix Result has 349 conditions, 181 events. 59/181 cut-off events. For 8/8 co-relation queries the response was YES. Maximal size of possible extension queue 11. Compared 693 event pairs, 22 based on Foata normal form. 10/190 useless extension candidates. Maximal degree in co-relation 335. Up to 104 conditions per place. [2024-05-12 12:52:34,240 INFO L140 encePairwiseOnDemand]: 36/40 looper letters, 23 selfloop transitions, 2 changer transitions 10/44 dead transitions. [2024-05-12 12:52:34,240 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 40 places, 44 transitions, 170 flow [2024-05-12 12:52:34,241 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-05-12 12:52:34,241 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-05-12 12:52:34,242 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 92 transitions. [2024-05-12 12:52:34,242 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.46 [2024-05-12 12:52:34,242 INFO L175 Difference]: Start difference. First operand has 36 places, 29 transitions, 66 flow. Second operand 5 states and 92 transitions. [2024-05-12 12:52:34,242 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 40 places, 44 transitions, 170 flow [2024-05-12 12:52:34,243 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 37 places, 44 transitions, 162 flow, removed 0 selfloop flow, removed 3 redundant places. [2024-05-12 12:52:34,244 INFO L231 Difference]: Finished difference. Result has 40 places, 29 transitions, 73 flow [2024-05-12 12:52:34,244 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=61, PETRI_DIFFERENCE_MINUEND_PLACES=33, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=29, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=27, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=73, PETRI_PLACES=40, PETRI_TRANSITIONS=29} [2024-05-12 12:52:34,245 INFO L281 CegarLoopForPetriNet]: 34 programPoint places, 6 predicate places. [2024-05-12 12:52:34,246 INFO L495 AbstractCegarLoop]: Abstraction has has 40 places, 29 transitions, 73 flow [2024-05-12 12:52:34,246 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 13.75) internal successors, (55), 4 states have internal predecessors, (55), 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) [2024-05-12 12:52:34,246 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 12:52:34,246 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] [2024-05-12 12:52:34,246 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-05-12 12:52:34,247 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-05-12 12:52:34,247 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 12:52:34,247 INFO L85 PathProgramCache]: Analyzing trace with hash 1275415186, now seen corresponding path program 1 times [2024-05-12 12:52:34,247 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 12:52:34,248 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1680832769] [2024-05-12 12:52:34,248 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 12:52:34,248 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 12:52:34,265 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 12:52:34,353 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-05-12 12:52:34,353 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 12:52:34,353 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1680832769] [2024-05-12 12:52:34,353 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1680832769] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 12:52:34,354 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 12:52:34,354 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-05-12 12:52:34,354 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [696972315] [2024-05-12 12:52:34,354 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 12:52:34,355 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-05-12 12:52:34,355 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 12:52:34,355 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-05-12 12:52:34,356 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-05-12 12:52:34,356 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 40 [2024-05-12 12:52:34,356 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 40 places, 29 transitions, 73 flow. Second operand has 3 states, 3 states have (on average 18.333333333333332) internal successors, (55), 3 states have internal predecessors, (55), 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) [2024-05-12 12:52:34,356 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 12:52:34,356 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 40 [2024-05-12 12:52:34,357 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 12:52:34,409 INFO L124 PetriNetUnfolderBase]: 32/130 cut-off events. [2024-05-12 12:52:34,409 INFO L125 PetriNetUnfolderBase]: For 6/6 co-relation queries the response was YES. [2024-05-12 12:52:34,409 INFO L83 FinitePrefix]: Finished finitePrefix Result has 262 conditions, 130 events. 32/130 cut-off events. For 6/6 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 408 event pairs, 15 based on Foata normal form. 13/140 useless extension candidates. Maximal degree in co-relation 245. Up to 53 conditions per place. [2024-05-12 12:52:34,411 INFO L140 encePairwiseOnDemand]: 32/40 looper letters, 18 selfloop transitions, 8 changer transitions 0/36 dead transitions. [2024-05-12 12:52:34,411 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 40 places, 36 transitions, 141 flow [2024-05-12 12:52:34,411 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-05-12 12:52:34,412 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-05-12 12:52:34,413 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 72 transitions. [2024-05-12 12:52:34,414 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6 [2024-05-12 12:52:34,414 INFO L175 Difference]: Start difference. First operand has 40 places, 29 transitions, 73 flow. Second operand 3 states and 72 transitions. [2024-05-12 12:52:34,414 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 40 places, 36 transitions, 141 flow [2024-05-12 12:52:34,416 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 36 places, 36 transitions, 133 flow, removed 2 selfloop flow, removed 4 redundant places. [2024-05-12 12:52:34,417 INFO L231 Difference]: Finished difference. Result has 37 places, 31 transitions, 97 flow [2024-05-12 12:52:34,417 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=65, PETRI_DIFFERENCE_MINUEND_PLACES=34, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=29, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=21, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=97, PETRI_PLACES=37, PETRI_TRANSITIONS=31} [2024-05-12 12:52:34,419 INFO L281 CegarLoopForPetriNet]: 34 programPoint places, 3 predicate places. [2024-05-12 12:52:34,419 INFO L495 AbstractCegarLoop]: Abstraction has has 37 places, 31 transitions, 97 flow [2024-05-12 12:52:34,420 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 18.333333333333332) internal successors, (55), 3 states have internal predecessors, (55), 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) [2024-05-12 12:52:34,420 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 12:52:34,420 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] [2024-05-12 12:52:34,420 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-05-12 12:52:34,420 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-05-12 12:52:34,420 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 12:52:34,421 INFO L85 PathProgramCache]: Analyzing trace with hash -165195328, now seen corresponding path program 1 times [2024-05-12 12:52:34,421 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 12:52:34,421 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [14814321] [2024-05-12 12:52:34,421 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 12:52:34,421 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 12:52:34,448 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 12:52:34,709 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-05-12 12:52:34,709 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 12:52:34,712 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [14814321] [2024-05-12 12:52:34,713 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [14814321] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 12:52:34,713 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 12:52:34,713 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-05-12 12:52:34,713 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1678118576] [2024-05-12 12:52:34,714 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 12:52:34,714 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-05-12 12:52:34,715 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 12:52:34,715 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-05-12 12:52:34,715 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2024-05-12 12:52:34,732 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 40 [2024-05-12 12:52:34,733 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 37 places, 31 transitions, 97 flow. Second operand has 7 states, 7 states have (on average 16.142857142857142) internal successors, (113), 7 states have internal predecessors, (113), 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) [2024-05-12 12:52:34,733 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 12:52:34,733 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 40 [2024-05-12 12:52:34,733 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 12:52:34,796 INFO L124 PetriNetUnfolderBase]: 21/96 cut-off events. [2024-05-12 12:52:34,796 INFO L125 PetriNetUnfolderBase]: For 49/49 co-relation queries the response was YES. [2024-05-12 12:52:34,797 INFO L83 FinitePrefix]: Finished finitePrefix Result has 227 conditions, 96 events. 21/96 cut-off events. For 49/49 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 216 event pairs, 5 based on Foata normal form. 9/105 useless extension candidates. Maximal degree in co-relation 212. Up to 46 conditions per place. [2024-05-12 12:52:34,797 INFO L140 encePairwiseOnDemand]: 35/40 looper letters, 19 selfloop transitions, 6 changer transitions 0/35 dead transitions. [2024-05-12 12:52:34,798 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 41 places, 35 transitions, 161 flow [2024-05-12 12:52:34,798 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-05-12 12:52:34,798 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-05-12 12:52:34,799 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 95 transitions. [2024-05-12 12:52:34,799 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.475 [2024-05-12 12:52:34,799 INFO L175 Difference]: Start difference. First operand has 37 places, 31 transitions, 97 flow. Second operand 5 states and 95 transitions. [2024-05-12 12:52:34,799 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 41 places, 35 transitions, 161 flow [2024-05-12 12:52:34,802 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 40 places, 35 transitions, 151 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-05-12 12:52:34,802 INFO L231 Difference]: Finished difference. Result has 40 places, 31 transitions, 101 flow [2024-05-12 12:52:34,803 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=89, PETRI_DIFFERENCE_MINUEND_PLACES=36, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=31, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=25, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=101, PETRI_PLACES=40, PETRI_TRANSITIONS=31} [2024-05-12 12:52:34,805 INFO L281 CegarLoopForPetriNet]: 34 programPoint places, 6 predicate places. [2024-05-12 12:52:34,805 INFO L495 AbstractCegarLoop]: Abstraction has has 40 places, 31 transitions, 101 flow [2024-05-12 12:52:34,806 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 16.142857142857142) internal successors, (113), 7 states have internal predecessors, (113), 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) [2024-05-12 12:52:34,806 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 12:52:34,806 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] [2024-05-12 12:52:34,806 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-05-12 12:52:34,806 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-05-12 12:52:34,807 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 12:52:34,807 INFO L85 PathProgramCache]: Analyzing trace with hash 1618692387, now seen corresponding path program 1 times [2024-05-12 12:52:34,807 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 12:52:34,807 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1099567069] [2024-05-12 12:52:34,807 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 12:52:34,807 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 12:52:34,821 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 12:52:34,970 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-05-12 12:52:34,970 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 12:52:34,971 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1099567069] [2024-05-12 12:52:34,971 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1099567069] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 12:52:34,971 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 12:52:34,971 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-05-12 12:52:34,971 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [423331945] [2024-05-12 12:52:34,972 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 12:52:34,972 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-05-12 12:52:34,972 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 12:52:34,973 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-05-12 12:52:34,973 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2024-05-12 12:52:34,983 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 40 [2024-05-12 12:52:34,983 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 40 places, 31 transitions, 101 flow. Second operand has 7 states, 7 states have (on average 12.857142857142858) internal successors, (90), 7 states have internal predecessors, (90), 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) [2024-05-12 12:52:34,983 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 12:52:34,984 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 40 [2024-05-12 12:52:34,984 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 12:52:35,083 INFO L124 PetriNetUnfolderBase]: 38/147 cut-off events. [2024-05-12 12:52:35,084 INFO L125 PetriNetUnfolderBase]: For 52/52 co-relation queries the response was YES. [2024-05-12 12:52:35,084 INFO L83 FinitePrefix]: Finished finitePrefix Result has 355 conditions, 147 events. 38/147 cut-off events. For 52/52 co-relation queries the response was YES. Maximal size of possible extension queue 11. Compared 480 event pairs, 11 based on Foata normal form. 2/148 useless extension candidates. Maximal degree in co-relation 338. Up to 50 conditions per place. [2024-05-12 12:52:35,085 INFO L140 encePairwiseOnDemand]: 33/40 looper letters, 25 selfloop transitions, 4 changer transitions 11/48 dead transitions. [2024-05-12 12:52:35,085 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 46 places, 48 transitions, 241 flow [2024-05-12 12:52:35,086 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-05-12 12:52:35,086 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-05-12 12:52:35,087 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 107 transitions. [2024-05-12 12:52:35,087 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3821428571428571 [2024-05-12 12:52:35,088 INFO L175 Difference]: Start difference. First operand has 40 places, 31 transitions, 101 flow. Second operand 7 states and 107 transitions. [2024-05-12 12:52:35,088 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 46 places, 48 transitions, 241 flow [2024-05-12 12:52:35,089 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 43 places, 48 transitions, 231 flow, removed 0 selfloop flow, removed 3 redundant places. [2024-05-12 12:52:35,090 INFO L231 Difference]: Finished difference. Result has 46 places, 31 transitions, 111 flow [2024-05-12 12:52:35,091 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=94, PETRI_DIFFERENCE_MINUEND_PLACES=37, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=31, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=27, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=111, PETRI_PLACES=46, PETRI_TRANSITIONS=31} [2024-05-12 12:52:35,091 INFO L281 CegarLoopForPetriNet]: 34 programPoint places, 12 predicate places. [2024-05-12 12:52:35,092 INFO L495 AbstractCegarLoop]: Abstraction has has 46 places, 31 transitions, 111 flow [2024-05-12 12:52:35,092 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 12.857142857142858) internal successors, (90), 7 states have internal predecessors, (90), 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) [2024-05-12 12:52:35,092 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 12:52:35,092 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] [2024-05-12 12:52:35,093 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-05-12 12:52:35,093 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-05-12 12:52:35,094 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 12:52:35,094 INFO L85 PathProgramCache]: Analyzing trace with hash -245251485, now seen corresponding path program 2 times [2024-05-12 12:52:35,094 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 12:52:35,095 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [692858034] [2024-05-12 12:52:35,095 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 12:52:35,095 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 12:52:35,128 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 12:52:35,258 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-05-12 12:52:35,259 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 12:52:35,259 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [692858034] [2024-05-12 12:52:35,259 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [692858034] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 12:52:35,261 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 12:52:35,261 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-05-12 12:52:35,261 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1292655579] [2024-05-12 12:52:35,261 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 12:52:35,262 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-05-12 12:52:35,262 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 12:52:35,263 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-05-12 12:52:35,263 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-05-12 12:52:35,269 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 40 [2024-05-12 12:52:35,270 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 46 places, 31 transitions, 111 flow. Second operand has 5 states, 5 states have (on average 14.8) internal successors, (74), 5 states have internal predecessors, (74), 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) [2024-05-12 12:52:35,270 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 12:52:35,270 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 40 [2024-05-12 12:52:35,270 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 12:52:35,328 INFO L124 PetriNetUnfolderBase]: 21/96 cut-off events. [2024-05-12 12:52:35,328 INFO L125 PetriNetUnfolderBase]: For 38/40 co-relation queries the response was YES. [2024-05-12 12:52:35,328 INFO L83 FinitePrefix]: Finished finitePrefix Result has 247 conditions, 96 events. 21/96 cut-off events. For 38/40 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 246 event pairs, 14 based on Foata normal form. 2/96 useless extension candidates. Maximal degree in co-relation 239. Up to 57 conditions per place. [2024-05-12 12:52:35,329 INFO L140 encePairwiseOnDemand]: 35/40 looper letters, 0 selfloop transitions, 0 changer transitions 33/33 dead transitions. [2024-05-12 12:52:35,329 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 47 places, 33 transitions, 167 flow [2024-05-12 12:52:35,329 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-05-12 12:52:35,329 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-05-12 12:52:35,330 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 79 transitions. [2024-05-12 12:52:35,330 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.395 [2024-05-12 12:52:35,330 INFO L175 Difference]: Start difference. First operand has 46 places, 31 transitions, 111 flow. Second operand 5 states and 79 transitions. [2024-05-12 12:52:35,330 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 47 places, 33 transitions, 167 flow [2024-05-12 12:52:35,332 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 42 places, 33 transitions, 156 flow, removed 1 selfloop flow, removed 5 redundant places. [2024-05-12 12:52:35,332 INFO L231 Difference]: Finished difference. Result has 42 places, 0 transitions, 0 flow [2024-05-12 12:52:35,332 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=94, PETRI_DIFFERENCE_MINUEND_PLACES=38, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=29, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=29, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=0, PETRI_PLACES=42, PETRI_TRANSITIONS=0} [2024-05-12 12:52:35,334 INFO L281 CegarLoopForPetriNet]: 34 programPoint places, 8 predicate places. [2024-05-12 12:52:35,334 INFO L495 AbstractCegarLoop]: Abstraction has has 42 places, 0 transitions, 0 flow [2024-05-12 12:52:35,334 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 14.8) internal successors, (74), 5 states have internal predecessors, (74), 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) [2024-05-12 12:52:35,337 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT (2 of 3 remaining) [2024-05-12 12:52:35,337 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION (1 of 3 remaining) [2024-05-12 12:52:35,338 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 3 remaining) [2024-05-12 12:52:35,338 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-05-12 12:52:35,338 INFO L445 BasicCegarLoop]: Path program histogram: [2, 1, 1, 1, 1, 1, 1] [2024-05-12 12:52:35,341 INFO L229 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2024-05-12 12:52:35,341 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2024-05-12 12:52:35,352 INFO L507 ceAbstractionStarter]: Automizer considered 1 witness invariants [2024-05-12 12:52:35,352 INFO L508 ceAbstractionStarter]: WitnessConsidered=1 [2024-05-12 12:52:35,354 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 12.05 12:52:35 BasicIcfg [2024-05-12 12:52:35,354 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2024-05-12 12:52:35,354 INFO L158 Benchmark]: Toolchain (without parser) took 3777.70ms. Allocated memory was 188.7MB in the beginning and 232.8MB in the end (delta: 44.0MB). Free memory was 116.0MB in the beginning and 140.5MB in the end (delta: -24.5MB). Peak memory consumption was 21.6MB. Max. memory is 16.1GB. [2024-05-12 12:52:35,355 INFO L158 Benchmark]: Witness Parser took 0.17ms. Allocated memory is still 104.9MB. Free memory is still 67.3MB. There was no memory consumed. Max. memory is 16.1GB. [2024-05-12 12:52:35,355 INFO L158 Benchmark]: CDTParser took 0.15ms. Allocated memory is still 188.7MB. Free memory is still 162.7MB. There was no memory consumed. Max. memory is 16.1GB. [2024-05-12 12:52:35,355 INFO L158 Benchmark]: CACSL2BoogieTranslator took 553.07ms. Allocated memory is still 188.7MB. Free memory was 115.8MB in the beginning and 149.5MB in the end (delta: -33.7MB). Peak memory consumption was 21.0MB. Max. memory is 16.1GB. [2024-05-12 12:52:35,355 INFO L158 Benchmark]: Boogie Procedure Inliner took 35.32ms. Allocated memory is still 188.7MB. Free memory was 149.5MB in the beginning and 147.4MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2024-05-12 12:52:35,356 INFO L158 Benchmark]: Boogie Preprocessor took 43.26ms. Allocated memory is still 188.7MB. Free memory was 147.4MB in the beginning and 145.3MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2024-05-12 12:52:35,356 INFO L158 Benchmark]: RCFGBuilder took 681.37ms. Allocated memory is still 188.7MB. Free memory was 145.3MB in the beginning and 115.9MB in the end (delta: 29.4MB). Peak memory consumption was 29.4MB. Max. memory is 16.1GB. [2024-05-12 12:52:35,356 INFO L158 Benchmark]: TraceAbstraction took 2459.43ms. Allocated memory was 188.7MB in the beginning and 232.8MB in the end (delta: 44.0MB). Free memory was 115.2MB in the beginning and 140.5MB in the end (delta: -25.3MB). Peak memory consumption was 17.4MB. Max. memory is 16.1GB. [2024-05-12 12:52:35,359 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * Witness Parser took 0.17ms. Allocated memory is still 104.9MB. Free memory is still 67.3MB. There was no memory consumed. Max. memory is 16.1GB. * CDTParser took 0.15ms. Allocated memory is still 188.7MB. Free memory is still 162.7MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 553.07ms. Allocated memory is still 188.7MB. Free memory was 115.8MB in the beginning and 149.5MB in the end (delta: -33.7MB). Peak memory consumption was 21.0MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 35.32ms. Allocated memory is still 188.7MB. Free memory was 149.5MB in the beginning and 147.4MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 43.26ms. Allocated memory is still 188.7MB. Free memory was 147.4MB in the beginning and 145.3MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 681.37ms. Allocated memory is still 188.7MB. Free memory was 145.3MB in the beginning and 115.9MB in the end (delta: 29.4MB). Peak memory consumption was 29.4MB. Max. memory is 16.1GB. * TraceAbstraction took 2459.43ms. Allocated memory was 188.7MB in the beginning and 232.8MB in the end (delta: 44.0MB). Free memory was 115.2MB in the beginning and 140.5MB in the end (delta: -25.3MB). Peak memory consumption was 17.4MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 698]: invariant of correctness witness holds For all program executions holds that invariant of correctness witness holds at this location - PositiveResult [Line: 19]: a call to reach_error is unreachable For all program executions holds that a call to reach_error is unreachable at this location - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 3 procedures, 55 locations, 3 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 0.0s, RemoveRedundantFlowTime: 0.0s, RemoveRedundantFlowUnfoldingTime: 0.0s, BackfoldingTime: 0.0s, BackfoldingUnfoldingTime: 0.0s, FlowIncreaseByBackfolding: 0, BasicCegarLoop: OverallTime: 2.4s, OverallIterations: 8, TraceHistogramMax: 1, PathProgramHistogramMax: 2, EmptinessCheckTime: 0.0s, AutomataDifference: 0.8s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 178 SdHoareTripleChecker+Valid, 0.4s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 154 mSDsluCounter, 29 SdHoareTripleChecker+Invalid, 0.3s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 14 mSDsCounter, 22 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 508 IncrementalHoareTripleChecker+Invalid, 530 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 22 mSolverCounterUnsat, 15 mSDtfsCounter, 508 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 38 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=111occurred in iteration=7, InterpolantAutomatonStates: 37, 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, 1.0s InterpolantComputationTime, 147 NumberOfCodeBlocks, 147 NumberOfCodeBlocksAsserted, 8 NumberOfCheckSat, 139 ConstructedInterpolants, 0 QuantifiedInterpolants, 585 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 2 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2024-05-12 12:52:35,391 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