./Ultimate.py --spec ../../../trunk/examples/svcomp/properties/unreach-call.prp --file ../../../trunk/examples/svcomp/pthread-atomic/read_write_lock-1-pthread.i --full-output --witness-type correctness_witness --witnessparser.only.consider.loop.invariants false --validate ./goblint.2023-12-19_14-39-08.files/SV-COMP24_unreach-call/read_write_lock-1-pthread.yml/witness.yml --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 80b1b132 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/pthread-atomic/read_write_lock-1-pthread.i ./goblint.2023-12-19_14-39-08.files/SV-COMP24_unreach-call/read_write_lock-1-pthread.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-?-80b1b13-m [2024-01-31 16:41:15,852 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-01-31 16:41:15,912 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-01-31 16:41:15,920 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-01-31 16:41:15,920 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-01-31 16:41:15,941 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-01-31 16:41:15,944 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-01-31 16:41:15,944 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-01-31 16:41:15,945 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-01-31 16:41:15,948 INFO L153 SettingsManager]: * Use memory slicer=true [2024-01-31 16:41:15,948 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-01-31 16:41:15,948 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-01-31 16:41:15,949 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-01-31 16:41:15,950 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-01-31 16:41:15,950 INFO L153 SettingsManager]: * Use SBE=true [2024-01-31 16:41:15,951 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-01-31 16:41:15,951 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-01-31 16:41:15,951 INFO L153 SettingsManager]: * sizeof long=4 [2024-01-31 16:41:15,951 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-01-31 16:41:15,951 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-01-31 16:41:15,951 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-01-31 16:41:15,952 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-01-31 16:41:15,952 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-01-31 16:41:15,952 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-01-31 16:41:15,952 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-01-31 16:41:15,953 INFO L153 SettingsManager]: * sizeof long double=12 [2024-01-31 16:41:15,953 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-01-31 16:41:15,953 INFO L153 SettingsManager]: * Use constant arrays=true [2024-01-31 16:41:15,954 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-01-31 16:41:15,954 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-01-31 16:41:15,955 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-01-31 16:41:15,955 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-01-31 16:41:15,955 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-01-31 16:41:15,955 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-01-31 16:41:15,955 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-01-31 16:41:15,955 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-01-31 16:41:15,956 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-01-31 16:41:15,957 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-01-31 16:41:15,957 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-01-31 16:41:15,957 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-01-31 16:41:15,957 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2024-01-31 16:41:15,957 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-01-31 16:41:15,957 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-01-31 16:41:15,958 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessparser: Only consider loop invariants -> false [2024-01-31 16:41:16,161 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-01-31 16:41:16,182 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-01-31 16:41:16,184 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-01-31 16:41:16,185 INFO L270 PluginConnector]: Initializing Witness Parser... [2024-01-31 16:41:16,186 INFO L274 PluginConnector]: Witness Parser initialized [2024-01-31 16:41:16,187 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/./goblint.2023-12-19_14-39-08.files/SV-COMP24_unreach-call/read_write_lock-1-pthread.yml/witness.yml [2024-01-31 16:41:16,368 INFO L270 PluginConnector]: Initializing CDTParser... [2024-01-31 16:41:16,368 INFO L274 PluginConnector]: CDTParser initialized [2024-01-31 16:41:16,369 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-atomic/read_write_lock-1-pthread.i [2024-01-31 16:41:17,478 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-01-31 16:41:17,726 INFO L384 CDTParser]: Found 1 translation units. [2024-01-31 16:41:17,730 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-atomic/read_write_lock-1-pthread.i [2024-01-31 16:41:17,742 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/5749db4ef/2c3213bbf6c94d68b259386b8fb049d8/FLAGc11cb8d0b [2024-01-31 16:41:17,753 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/5749db4ef/2c3213bbf6c94d68b259386b8fb049d8 [2024-01-31 16:41:17,758 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-01-31 16:41:17,759 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2024-01-31 16:41:17,760 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-01-31 16:41:17,760 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-01-31 16:41:17,764 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-01-31 16:41:17,764 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 31.01 04:41:16" (1/2) ... [2024-01-31 16:41:17,765 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@49873e6a and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 31.01 04:41:17, skipping insertion in model container [2024-01-31 16:41:17,765 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 31.01 04:41:16" (1/2) ... [2024-01-31 16:41:17,766 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@163fa176 and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 31.01 04:41:17, skipping insertion in model container [2024-01-31 16:41:17,767 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 31.01 04:41:17" (2/2) ... [2024-01-31 16:41:17,767 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@49873e6a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 04:41:17, skipping insertion in model container [2024-01-31 16:41:17,767 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 31.01 04:41:17" (2/2) ... [2024-01-31 16:41:17,767 INFO L83 nessWitnessExtractor]: Extracting all invariants from correctness witness [2024-01-31 16:41:17,955 INFO L96 nessWitnessExtractor]: Found the following entries in the witness: [2024-01-31 16:41:17,957 INFO L98 nessWitnessExtractor]: Location invariant after [L708-L708] (((((((((((((((0 <= y) && (0 <= l)) && (0 <= ly)) && (y <= 3)) && (y <= 127)) && (l <= 3)) && (l <= 127)) && (ly <= 3)) && (ly <= 127)) && (y % 3 == 0)) && (l % 3 == 0)) && (ly % 3 == 0)) && ((unsigned long )arg == 0UL)) && (y == 0 || y == 3)) && (l == 0 || l == 3)) && (ly == 0 || ly == 3) [2024-01-31 16:41:17,957 INFO L98 nessWitnessExtractor]: Location invariant after [L705-L705] ((((((((((0 <= y) && (0 <= l)) && (y <= 3)) && (y <= 127)) && (l <= 3)) && (l <= 127)) && (y % 3 == 0)) && (l % 3 == 0)) && ((unsigned long )arg == 0UL)) && (y == 0 || y == 3)) && (l == 0 || l == 3) [2024-01-31 16:41:17,996 INFO L179 MainTranslator]: Built tables and reachable declarations [2024-01-31 16:41:18,295 WARN L239 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/pthread-atomic/read_write_lock-1-pthread.i[30919,30932] [2024-01-31 16:41:18,312 INFO L209 PostProcessor]: Analyzing one entry point: main [2024-01-31 16:41:18,330 INFO L204 MainTranslator]: Completed pre-run [2024-01-31 16:41:18,395 WARN L424 MainDispatcher]: Unable to annotate int with a witness entry [2024-01-31 16:41:18,398 WARN L424 MainDispatcher]: Unable to annotate int with a witness entry [2024-01-31 16:41:18,399 WARN L239 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/pthread-atomic/read_write_lock-1-pthread.i[30919,30932] [2024-01-31 16:41:18,414 INFO L209 PostProcessor]: Analyzing one entry point: main [2024-01-31 16:41:18,459 INFO L208 MainTranslator]: Completed translation [2024-01-31 16:41:18,459 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 04:41:18 WrapperNode [2024-01-31 16:41:18,459 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-01-31 16:41:18,460 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-01-31 16:41:18,461 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-01-31 16:41:18,461 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-01-31 16:41:18,468 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 04:41:18" (1/1) ... [2024-01-31 16:41:18,501 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 04:41:18" (1/1) ... [2024-01-31 16:41:18,530 INFO L138 Inliner]: procedures = 166, calls = 54, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 81 [2024-01-31 16:41:18,530 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-01-31 16:41:18,531 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-01-31 16:41:18,531 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-01-31 16:41:18,531 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-01-31 16:41:18,540 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 04:41:18" (1/1) ... [2024-01-31 16:41:18,541 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 04:41:18" (1/1) ... [2024-01-31 16:41:18,553 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 04:41:18" (1/1) ... [2024-01-31 16:41:18,564 INFO L175 MemorySlicer]: Split 21 memory accesses to 6 slices as follows [2, 2, 11, 2, 2, 2]. 52 percent of accesses are in the largest equivalence class. The 13 initializations are split as follows [2, 0, 11, 0, 0, 0]. The 4 writes are split as follows [0, 1, 0, 1, 1, 1]. [2024-01-31 16:41:18,565 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 04:41:18" (1/1) ... [2024-01-31 16:41:18,565 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 04:41:18" (1/1) ... [2024-01-31 16:41:18,572 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 04:41:18" (1/1) ... [2024-01-31 16:41:18,582 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 04:41:18" (1/1) ... [2024-01-31 16:41:18,583 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 04:41:18" (1/1) ... [2024-01-31 16:41:18,584 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 04:41:18" (1/1) ... [2024-01-31 16:41:18,595 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-01-31 16:41:18,596 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-01-31 16:41:18,596 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-01-31 16:41:18,596 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-01-31 16:41:18,597 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 04:41:18" (1/1) ... [2024-01-31 16:41:18,601 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-01-31 16:41:18,616 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-01-31 16:41:18,629 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) [2024-01-31 16:41:18,634 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 [2024-01-31 16:41:18,660 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsRwLockUnlock [2024-01-31 16:41:18,660 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2024-01-31 16:41:18,661 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2024-01-31 16:41:18,661 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#2 [2024-01-31 16:41:18,661 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#3 [2024-01-31 16:41:18,661 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#4 [2024-01-31 16:41:18,661 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#5 [2024-01-31 16:41:18,662 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-01-31 16:41:18,662 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2024-01-31 16:41:18,662 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#2 [2024-01-31 16:41:18,662 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#3 [2024-01-31 16:41:18,662 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#4 [2024-01-31 16:41:18,662 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#5 [2024-01-31 16:41:18,663 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsRwLockReadLock [2024-01-31 16:41:18,663 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2024-01-31 16:41:18,663 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-01-31 16:41:18,663 INFO L130 BoogieDeclarations]: Found specification of procedure reader [2024-01-31 16:41:18,663 INFO L138 BoogieDeclarations]: Found implementation of procedure reader [2024-01-31 16:41:18,663 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2024-01-31 16:41:18,664 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsRwLockWriteLock [2024-01-31 16:41:18,664 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2024-01-31 16:41:18,664 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-01-31 16:41:18,664 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-01-31 16:41:18,664 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2024-01-31 16:41:18,664 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#3 [2024-01-31 16:41:18,665 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#4 [2024-01-31 16:41:18,665 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#5 [2024-01-31 16:41:18,665 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2024-01-31 16:41:18,665 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-01-31 16:41:18,665 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-01-31 16:41:18,665 INFO L130 BoogieDeclarations]: Found specification of procedure writer [2024-01-31 16:41:18,666 INFO L138 BoogieDeclarations]: Found implementation of procedure writer [2024-01-31 16:41:18,667 WARN L214 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2024-01-31 16:41:18,773 INFO L244 CfgBuilder]: Building ICFG [2024-01-31 16:41:18,775 INFO L270 CfgBuilder]: Building CFG for each procedure with an implementation [2024-01-31 16:41:18,937 INFO L289 CfgBuilder]: Ommited future-live optimization because the input is a concurrent program. [2024-01-31 16:41:18,937 INFO L293 CfgBuilder]: Performing block encoding [2024-01-31 16:41:19,039 INFO L315 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-01-31 16:41:19,040 INFO L320 CfgBuilder]: Removed 0 assume(true) statements. [2024-01-31 16:41:19,040 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 31.01 04:41:19 BoogieIcfgContainer [2024-01-31 16:41:19,040 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-01-31 16:41:19,042 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-01-31 16:41:19,042 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-01-31 16:41:19,044 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-01-31 16:41:19,044 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 31.01 04:41:16" (1/4) ... [2024-01-31 16:41:19,045 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1e07b0e0 and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CORRECTNESS_WITNESS 31.01 04:41:19, skipping insertion in model container [2024-01-31 16:41:19,045 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 31.01 04:41:17" (2/4) ... [2024-01-31 16:41:19,046 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1e07b0e0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 31.01 04:41:19, skipping insertion in model container [2024-01-31 16:41:19,046 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 04:41:18" (3/4) ... [2024-01-31 16:41:19,047 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1e07b0e0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 31.01 04:41:19, skipping insertion in model container [2024-01-31 16:41:19,048 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 31.01 04:41:19" (4/4) ... [2024-01-31 16:41:19,049 INFO L112 eAbstractionObserver]: Analyzing ICFG read_write_lock-1-pthread.i [2024-01-31 16:41:19,067 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-01-31 16:41:19,067 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-01-31 16:41:19,068 INFO L518 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-01-31 16:41:19,158 INFO L144 ThreadInstanceAdder]: Constructed 4 joinOtherThreadTransitions. [2024-01-31 16:41:19,191 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 68 places, 57 transitions, 142 flow [2024-01-31 16:41:19,232 INFO L124 PetriNetUnfolderBase]: 2/53 cut-off events. [2024-01-31 16:41:19,233 INFO L125 PetriNetUnfolderBase]: For 4/4 co-relation queries the response was YES. [2024-01-31 16:41:19,235 INFO L83 FinitePrefix]: Finished finitePrefix Result has 70 conditions, 53 events. 2/53 cut-off events. For 4/4 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 106 event pairs, 0 based on Foata normal form. 0/49 useless extension candidates. Maximal degree in co-relation 49. Up to 2 conditions per place. [2024-01-31 16:41:19,236 INFO L82 GeneralOperation]: Start removeDead. Operand has 68 places, 57 transitions, 142 flow [2024-01-31 16:41:19,239 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 62 places, 51 transitions, 123 flow [2024-01-31 16:41:19,251 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-01-31 16:41:19,260 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;@6b4160ee, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-01-31 16:41:19,261 INFO L358 AbstractCegarLoop]: Starting to check reachability of 7 error locations. [2024-01-31 16:41:19,280 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-01-31 16:41:19,280 INFO L124 PetriNetUnfolderBase]: 1/34 cut-off events. [2024-01-31 16:41:19,281 INFO L125 PetriNetUnfolderBase]: For 1/1 co-relation queries the response was YES. [2024-01-31 16:41:19,281 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-31 16:41:19,282 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-01-31 16:41:19,282 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting readerErr0ASSERT_VIOLATIONERROR_FUNCTION === [readerErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2024-01-31 16:41:19,287 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-31 16:41:19,287 INFO L85 PathProgramCache]: Analyzing trace with hash -1100067354, now seen corresponding path program 1 times [2024-01-31 16:41:19,298 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-31 16:41:19,298 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1769435969] [2024-01-31 16:41:19,299 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-31 16:41:19,300 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-31 16:41:19,468 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-31 16:41:19,635 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-31 16:41:19,636 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-31 16:41:19,636 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1769435969] [2024-01-31 16:41:19,637 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1769435969] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-31 16:41:19,637 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-31 16:41:19,637 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-01-31 16:41:19,638 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1856259324] [2024-01-31 16:41:19,639 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-31 16:41:19,645 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-01-31 16:41:19,651 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-31 16:41:19,688 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-01-31 16:41:19,689 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-01-31 16:41:19,726 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 57 [2024-01-31 16:41:19,729 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 62 places, 51 transitions, 123 flow. Second operand has 6 states, 6 states have (on average 16.833333333333332) internal successors, (101), 6 states have internal predecessors, (101), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-31 16:41:19,729 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-31 16:41:19,729 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 57 [2024-01-31 16:41:19,730 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-31 16:41:23,222 INFO L124 PetriNetUnfolderBase]: 25855/39046 cut-off events. [2024-01-31 16:41:23,222 INFO L125 PetriNetUnfolderBase]: For 2803/2803 co-relation queries the response was YES. [2024-01-31 16:41:23,328 INFO L83 FinitePrefix]: Finished finitePrefix Result has 76636 conditions, 39046 events. 25855/39046 cut-off events. For 2803/2803 co-relation queries the response was YES. Maximal size of possible extension queue 1534. Compared 284806 event pairs, 3169 based on Foata normal form. 2094/39691 useless extension candidates. Maximal degree in co-relation 63845. Up to 11319 conditions per place. [2024-01-31 16:41:23,608 INFO L140 encePairwiseOnDemand]: 45/57 looper letters, 187 selfloop transitions, 29 changer transitions 8/235 dead transitions. [2024-01-31 16:41:23,608 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 72 places, 235 transitions, 1020 flow [2024-01-31 16:41:23,625 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-01-31 16:41:23,627 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-01-31 16:41:23,637 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 403 transitions. [2024-01-31 16:41:23,639 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6427432216905901 [2024-01-31 16:41:23,641 INFO L175 Difference]: Start difference. First operand has 62 places, 51 transitions, 123 flow. Second operand 11 states and 403 transitions. [2024-01-31 16:41:23,641 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 72 places, 235 transitions, 1020 flow [2024-01-31 16:41:23,663 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 65 places, 235 transitions, 959 flow, removed 0 selfloop flow, removed 7 redundant places. [2024-01-31 16:41:23,668 INFO L231 Difference]: Finished difference. Result has 73 places, 80 transitions, 308 flow [2024-01-31 16:41:23,670 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=57, PETRI_DIFFERENCE_MINUEND_FLOW=106, PETRI_DIFFERENCE_MINUEND_PLACES=55, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=49, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=40, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=308, PETRI_PLACES=73, PETRI_TRANSITIONS=80} [2024-01-31 16:41:23,674 INFO L281 CegarLoopForPetriNet]: 62 programPoint places, 11 predicate places. [2024-01-31 16:41:23,675 INFO L495 AbstractCegarLoop]: Abstraction has has 73 places, 80 transitions, 308 flow [2024-01-31 16:41:23,675 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 16.833333333333332) internal successors, (101), 6 states have internal predecessors, (101), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-31 16:41:23,675 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-31 16:41:23,675 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-01-31 16:41:23,675 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-01-31 16:41:23,676 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting readerErr0ASSERT_VIOLATIONERROR_FUNCTION === [readerErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2024-01-31 16:41:23,676 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-31 16:41:23,676 INFO L85 PathProgramCache]: Analyzing trace with hash -627422463, now seen corresponding path program 1 times [2024-01-31 16:41:23,676 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-31 16:41:23,677 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1583592084] [2024-01-31 16:41:23,677 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-31 16:41:23,677 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-31 16:41:23,725 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-31 16:41:23,833 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-31 16:41:23,834 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-31 16:41:23,834 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1583592084] [2024-01-31 16:41:23,834 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1583592084] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-31 16:41:23,835 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-31 16:41:23,835 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-01-31 16:41:23,835 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1937628269] [2024-01-31 16:41:23,835 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-31 16:41:23,836 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-01-31 16:41:23,836 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-31 16:41:23,837 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-01-31 16:41:23,837 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-01-31 16:41:23,838 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 22 out of 57 [2024-01-31 16:41:23,838 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 73 places, 80 transitions, 308 flow. Second operand has 3 states, 3 states have (on average 24.666666666666668) internal successors, (74), 3 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) [2024-01-31 16:41:23,839 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-31 16:41:23,839 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 22 of 57 [2024-01-31 16:41:23,840 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-31 16:41:24,017 INFO L124 PetriNetUnfolderBase]: 799/2035 cut-off events. [2024-01-31 16:41:24,018 INFO L125 PetriNetUnfolderBase]: For 867/1293 co-relation queries the response was YES. [2024-01-31 16:41:24,024 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4728 conditions, 2035 events. 799/2035 cut-off events. For 867/1293 co-relation queries the response was YES. Maximal size of possible extension queue 128. Compared 15545 event pairs, 112 based on Foata normal form. 953/2899 useless extension candidates. Maximal degree in co-relation 4094. Up to 1071 conditions per place. [2024-01-31 16:41:24,033 INFO L140 encePairwiseOnDemand]: 49/57 looper letters, 44 selfloop transitions, 2 changer transitions 2/79 dead transitions. [2024-01-31 16:41:24,035 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 65 places, 79 transitions, 399 flow [2024-01-31 16:41:24,035 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-01-31 16:41:24,035 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-01-31 16:41:24,036 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 106 transitions. [2024-01-31 16:41:24,036 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6198830409356725 [2024-01-31 16:41:24,036 INFO L175 Difference]: Start difference. First operand has 73 places, 80 transitions, 308 flow. Second operand 3 states and 106 transitions. [2024-01-31 16:41:24,037 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 65 places, 79 transitions, 399 flow [2024-01-31 16:41:24,054 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 65 places, 79 transitions, 399 flow, removed 0 selfloop flow, removed 0 redundant places. [2024-01-31 16:41:24,056 INFO L231 Difference]: Finished difference. Result has 66 places, 68 transitions, 291 flow [2024-01-31 16:41:24,056 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=57, PETRI_DIFFERENCE_MINUEND_FLOW=277, PETRI_DIFFERENCE_MINUEND_PLACES=63, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=68, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=66, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=291, PETRI_PLACES=66, PETRI_TRANSITIONS=68} [2024-01-31 16:41:24,057 INFO L281 CegarLoopForPetriNet]: 62 programPoint places, 4 predicate places. [2024-01-31 16:41:24,057 INFO L495 AbstractCegarLoop]: Abstraction has has 66 places, 68 transitions, 291 flow [2024-01-31 16:41:24,058 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 24.666666666666668) internal successors, (74), 3 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) [2024-01-31 16:41:24,058 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-31 16:41:24,058 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-01-31 16:41:24,058 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-01-31 16:41:24,058 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting readerErr0ASSERT_VIOLATIONERROR_FUNCTION === [readerErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2024-01-31 16:41:24,060 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-31 16:41:24,060 INFO L85 PathProgramCache]: Analyzing trace with hash 1356740063, now seen corresponding path program 2 times [2024-01-31 16:41:24,060 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-31 16:41:24,061 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [271565163] [2024-01-31 16:41:24,061 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-31 16:41:24,061 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-31 16:41:24,090 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-31 16:41:24,183 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-31 16:41:24,184 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-31 16:41:24,184 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [271565163] [2024-01-31 16:41:24,184 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [271565163] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-31 16:41:24,184 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-31 16:41:24,185 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-01-31 16:41:24,185 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [840329589] [2024-01-31 16:41:24,185 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-31 16:41:24,186 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-01-31 16:41:24,186 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-31 16:41:24,186 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-01-31 16:41:24,186 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-01-31 16:41:24,187 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 22 out of 57 [2024-01-31 16:41:24,187 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 66 places, 68 transitions, 291 flow. Second operand has 3 states, 3 states have (on average 24.666666666666668) internal successors, (74), 3 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) [2024-01-31 16:41:24,187 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-31 16:41:24,187 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 22 of 57 [2024-01-31 16:41:24,188 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-31 16:41:24,260 INFO L124 PetriNetUnfolderBase]: 116/374 cut-off events. [2024-01-31 16:41:24,261 INFO L125 PetriNetUnfolderBase]: For 236/243 co-relation queries the response was YES. [2024-01-31 16:41:24,261 INFO L83 FinitePrefix]: Finished finitePrefix Result has 828 conditions, 374 events. 116/374 cut-off events. For 236/243 co-relation queries the response was YES. Maximal size of possible extension queue 28. Compared 1952 event pairs, 9 based on Foata normal form. 52/407 useless extension candidates. Maximal degree in co-relation 806. Up to 177 conditions per place. [2024-01-31 16:41:24,262 INFO L140 encePairwiseOnDemand]: 51/57 looper letters, 20 selfloop transitions, 2 changer transitions 6/55 dead transitions. [2024-01-31 16:41:24,262 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 63 places, 55 transitions, 257 flow [2024-01-31 16:41:24,263 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-01-31 16:41:24,263 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-01-31 16:41:24,263 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 98 transitions. [2024-01-31 16:41:24,263 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5730994152046783 [2024-01-31 16:41:24,263 INFO L175 Difference]: Start difference. First operand has 66 places, 68 transitions, 291 flow. Second operand 3 states and 98 transitions. [2024-01-31 16:41:24,263 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 63 places, 55 transitions, 257 flow [2024-01-31 16:41:24,265 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 60 places, 55 transitions, 246 flow, removed 2 selfloop flow, removed 3 redundant places. [2024-01-31 16:41:24,266 INFO L231 Difference]: Finished difference. Result has 61 places, 42 transitions, 162 flow [2024-01-31 16:41:24,266 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=57, PETRI_DIFFERENCE_MINUEND_FLOW=160, PETRI_DIFFERENCE_MINUEND_PLACES=58, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=44, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=42, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=162, PETRI_PLACES=61, PETRI_TRANSITIONS=42} [2024-01-31 16:41:24,267 INFO L281 CegarLoopForPetriNet]: 62 programPoint places, -1 predicate places. [2024-01-31 16:41:24,267 INFO L495 AbstractCegarLoop]: Abstraction has has 61 places, 42 transitions, 162 flow [2024-01-31 16:41:24,267 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 24.666666666666668) internal successors, (74), 3 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) [2024-01-31 16:41:24,267 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-31 16:41:24,267 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-01-31 16:41:24,268 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-01-31 16:41:24,268 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting readerErr0ASSERT_VIOLATIONERROR_FUNCTION === [readerErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2024-01-31 16:41:24,268 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-31 16:41:24,268 INFO L85 PathProgramCache]: Analyzing trace with hash 2132620070, now seen corresponding path program 1 times [2024-01-31 16:41:24,268 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-31 16:41:24,269 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [451840823] [2024-01-31 16:41:24,269 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-31 16:41:24,269 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-31 16:41:24,280 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-31 16:41:24,362 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-31 16:41:24,363 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-31 16:41:24,363 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [451840823] [2024-01-31 16:41:24,363 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [451840823] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-31 16:41:24,363 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-31 16:41:24,363 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-01-31 16:41:24,363 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [268191228] [2024-01-31 16:41:24,363 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-31 16:41:24,363 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-01-31 16:41:24,364 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-31 16:41:24,364 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-01-31 16:41:24,364 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-01-31 16:41:24,388 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 57 [2024-01-31 16:41:24,389 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 61 places, 42 transitions, 162 flow. Second operand has 6 states, 6 states have (on average 17.5) internal successors, (105), 6 states have internal predecessors, (105), 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) [2024-01-31 16:41:24,389 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-31 16:41:24,389 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 57 [2024-01-31 16:41:24,389 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-31 16:41:24,530 INFO L124 PetriNetUnfolderBase]: 105/309 cut-off events. [2024-01-31 16:41:24,530 INFO L125 PetriNetUnfolderBase]: For 127/127 co-relation queries the response was YES. [2024-01-31 16:41:24,531 INFO L83 FinitePrefix]: Finished finitePrefix Result has 790 conditions, 309 events. 105/309 cut-off events. For 127/127 co-relation queries the response was YES. Maximal size of possible extension queue 22. Compared 1385 event pairs, 22 based on Foata normal form. 0/305 useless extension candidates. Maximal degree in co-relation 772. Up to 57 conditions per place. [2024-01-31 16:41:24,532 INFO L140 encePairwiseOnDemand]: 49/57 looper letters, 37 selfloop transitions, 9 changer transitions 11/72 dead transitions. [2024-01-31 16:41:24,532 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 65 places, 72 transitions, 367 flow [2024-01-31 16:41:24,533 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-01-31 16:41:24,533 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-01-31 16:41:24,534 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 202 transitions. [2024-01-31 16:41:24,534 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3543859649122807 [2024-01-31 16:41:24,534 INFO L175 Difference]: Start difference. First operand has 61 places, 42 transitions, 162 flow. Second operand 10 states and 202 transitions. [2024-01-31 16:41:24,534 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 65 places, 72 transitions, 367 flow [2024-01-31 16:41:24,536 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 64 places, 72 transitions, 351 flow, removed 8 selfloop flow, removed 1 redundant places. [2024-01-31 16:41:24,537 INFO L231 Difference]: Finished difference. Result has 70 places, 44 transitions, 196 flow [2024-01-31 16:41:24,537 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=57, PETRI_DIFFERENCE_MINUEND_FLOW=154, PETRI_DIFFERENCE_MINUEND_PLACES=55, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=42, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=35, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=196, PETRI_PLACES=70, PETRI_TRANSITIONS=44} [2024-01-31 16:41:24,538 INFO L281 CegarLoopForPetriNet]: 62 programPoint places, 8 predicate places. [2024-01-31 16:41:24,538 INFO L495 AbstractCegarLoop]: Abstraction has has 70 places, 44 transitions, 196 flow [2024-01-31 16:41:24,539 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 17.5) internal successors, (105), 6 states have internal predecessors, (105), 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) [2024-01-31 16:41:24,539 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-31 16:41:24,539 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] [2024-01-31 16:41:24,539 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-01-31 16:41:24,539 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting readerErr0ASSERT_VIOLATIONERROR_FUNCTION === [readerErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2024-01-31 16:41:24,540 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-31 16:41:24,540 INFO L85 PathProgramCache]: Analyzing trace with hash -1707589020, now seen corresponding path program 1 times [2024-01-31 16:41:24,540 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-31 16:41:24,540 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [694761044] [2024-01-31 16:41:24,540 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-31 16:41:24,541 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-31 16:41:24,556 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-31 16:41:24,603 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-31 16:41:24,604 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-31 16:41:24,604 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [694761044] [2024-01-31 16:41:24,604 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [694761044] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-31 16:41:24,604 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-31 16:41:24,604 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-01-31 16:41:24,605 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1193043270] [2024-01-31 16:41:24,605 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-31 16:41:24,605 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-01-31 16:41:24,605 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-31 16:41:24,606 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-01-31 16:41:24,606 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-01-31 16:41:24,643 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 57 [2024-01-31 16:41:24,644 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 70 places, 44 transitions, 196 flow. Second operand has 6 states, 6 states have (on average 18.0) internal successors, (108), 6 states have internal predecessors, (108), 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) [2024-01-31 16:41:24,644 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-31 16:41:24,644 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 57 [2024-01-31 16:41:24,645 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-31 16:41:24,764 INFO L124 PetriNetUnfolderBase]: 105/269 cut-off events. [2024-01-31 16:41:24,764 INFO L125 PetriNetUnfolderBase]: For 154/154 co-relation queries the response was YES. [2024-01-31 16:41:24,766 INFO L83 FinitePrefix]: Finished finitePrefix Result has 778 conditions, 269 events. 105/269 cut-off events. For 154/154 co-relation queries the response was YES. Maximal size of possible extension queue 17. Compared 1079 event pairs, 22 based on Foata normal form. 2/269 useless extension candidates. Maximal degree in co-relation 761. Up to 64 conditions per place. [2024-01-31 16:41:24,767 INFO L140 encePairwiseOnDemand]: 49/57 looper letters, 23 selfloop transitions, 4 changer transitions 27/67 dead transitions. [2024-01-31 16:41:24,767 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 71 places, 67 transitions, 371 flow [2024-01-31 16:41:24,767 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-01-31 16:41:24,768 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-01-31 16:41:24,768 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 186 transitions. [2024-01-31 16:41:24,769 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.36257309941520466 [2024-01-31 16:41:24,769 INFO L175 Difference]: Start difference. First operand has 70 places, 44 transitions, 196 flow. Second operand 9 states and 186 transitions. [2024-01-31 16:41:24,769 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 71 places, 67 transitions, 371 flow [2024-01-31 16:41:24,771 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 67 places, 67 transitions, 361 flow, removed 4 selfloop flow, removed 4 redundant places. [2024-01-31 16:41:24,772 INFO L231 Difference]: Finished difference. Result has 67 places, 35 transitions, 147 flow [2024-01-31 16:41:24,773 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=57, PETRI_DIFFERENCE_MINUEND_FLOW=179, PETRI_DIFFERENCE_MINUEND_PLACES=59, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=42, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=38, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=147, PETRI_PLACES=67, PETRI_TRANSITIONS=35} [2024-01-31 16:41:24,774 INFO L281 CegarLoopForPetriNet]: 62 programPoint places, 5 predicate places. [2024-01-31 16:41:24,774 INFO L495 AbstractCegarLoop]: Abstraction has has 67 places, 35 transitions, 147 flow [2024-01-31 16:41:24,774 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 18.0) internal successors, (108), 6 states have internal predecessors, (108), 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) [2024-01-31 16:41:24,774 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-31 16:41:24,774 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] [2024-01-31 16:41:24,775 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-01-31 16:41:24,775 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting readerErr0ASSERT_VIOLATIONERROR_FUNCTION === [readerErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2024-01-31 16:41:24,775 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-31 16:41:24,775 INFO L85 PathProgramCache]: Analyzing trace with hash -1036078208, now seen corresponding path program 1 times [2024-01-31 16:41:24,776 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-31 16:41:24,776 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1295423825] [2024-01-31 16:41:24,776 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-31 16:41:24,776 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-31 16:41:24,793 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-31 16:41:24,846 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-31 16:41:24,847 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-31 16:41:24,847 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1295423825] [2024-01-31 16:41:24,847 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1295423825] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-31 16:41:24,848 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-31 16:41:24,848 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-01-31 16:41:24,848 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [955405496] [2024-01-31 16:41:24,848 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-31 16:41:24,849 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-01-31 16:41:24,849 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-31 16:41:24,850 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-01-31 16:41:24,850 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-01-31 16:41:24,876 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 57 [2024-01-31 16:41:24,876 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 67 places, 35 transitions, 147 flow. Second operand has 6 states, 6 states have (on average 18.0) internal successors, (108), 6 states have internal predecessors, (108), 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) [2024-01-31 16:41:24,876 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-31 16:41:24,877 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 57 [2024-01-31 16:41:24,877 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-31 16:41:25,112 INFO L124 PetriNetUnfolderBase]: 78/183 cut-off events. [2024-01-31 16:41:25,113 INFO L125 PetriNetUnfolderBase]: For 127/131 co-relation queries the response was YES. [2024-01-31 16:41:25,113 INFO L83 FinitePrefix]: Finished finitePrefix Result has 519 conditions, 183 events. 78/183 cut-off events. For 127/131 co-relation queries the response was YES. Maximal size of possible extension queue 10. Compared 561 event pairs, 22 based on Foata normal form. 6/188 useless extension candidates. Maximal degree in co-relation 505. Up to 57 conditions per place. [2024-01-31 16:41:25,114 INFO L140 encePairwiseOnDemand]: 49/57 looper letters, 0 selfloop transitions, 0 changer transitions 54/54 dead transitions. [2024-01-31 16:41:25,114 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 69 places, 54 transitions, 297 flow [2024-01-31 16:41:25,117 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-01-31 16:41:25,117 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-01-31 16:41:25,118 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 180 transitions. [2024-01-31 16:41:25,118 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3508771929824561 [2024-01-31 16:41:25,118 INFO L175 Difference]: Start difference. First operand has 67 places, 35 transitions, 147 flow. Second operand 9 states and 180 transitions. [2024-01-31 16:41:25,118 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 69 places, 54 transitions, 297 flow [2024-01-31 16:41:25,119 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 57 places, 54 transitions, 265 flow, removed 2 selfloop flow, removed 12 redundant places. [2024-01-31 16:41:25,120 INFO L231 Difference]: Finished difference. Result has 57 places, 0 transitions, 0 flow [2024-01-31 16:41:25,120 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=57, PETRI_DIFFERENCE_MINUEND_FLOW=112, PETRI_DIFFERENCE_MINUEND_PLACES=49, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=33, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=33, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=0, PETRI_PLACES=57, PETRI_TRANSITIONS=0} [2024-01-31 16:41:25,122 INFO L281 CegarLoopForPetriNet]: 62 programPoint places, -5 predicate places. [2024-01-31 16:41:25,123 INFO L495 AbstractCegarLoop]: Abstraction has has 57 places, 0 transitions, 0 flow [2024-01-31 16:41:25,123 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 18.0) internal successors, (108), 6 states have internal predecessors, (108), 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) [2024-01-31 16:41:25,125 INFO L805 garLoopResultBuilder]: Registering result SAFE for location readerErr0ASSERT_VIOLATIONERROR_FUNCTION (6 of 7 remaining) [2024-01-31 16:41:25,126 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (5 of 7 remaining) [2024-01-31 16:41:25,128 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (4 of 7 remaining) [2024-01-31 16:41:25,129 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (3 of 7 remaining) [2024-01-31 16:41:25,129 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr3INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (2 of 7 remaining) [2024-01-31 16:41:25,129 INFO L805 garLoopResultBuilder]: Registering result SAFE for location readerErr0ASSERT_VIOLATIONERROR_FUNCTION (1 of 7 remaining) [2024-01-31 16:41:25,129 INFO L805 garLoopResultBuilder]: Registering result SAFE for location readerErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 7 remaining) [2024-01-31 16:41:25,129 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-01-31 16:41:25,130 INFO L445 BasicCegarLoop]: Path program histogram: [2, 1, 1, 1, 1] [2024-01-31 16:41:25,133 INFO L229 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2024-01-31 16:41:25,134 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2024-01-31 16:41:25,138 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 31.01 04:41:25 BasicIcfg [2024-01-31 16:41:25,139 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2024-01-31 16:41:25,141 INFO L158 Benchmark]: Toolchain (without parser) took 7380.31ms. Allocated memory was 172.0MB in the beginning and 805.3MB in the end (delta: 633.3MB). Free memory was 137.3MB in the beginning and 599.8MB in the end (delta: -462.5MB). Peak memory consumption was 169.4MB. Max. memory is 16.1GB. [2024-01-31 16:41:25,141 INFO L158 Benchmark]: Witness Parser took 0.17ms. Allocated memory is still 109.1MB. Free memory is still 68.1MB. There was no memory consumed. Max. memory is 16.1GB. [2024-01-31 16:41:25,141 INFO L158 Benchmark]: CDTParser took 0.15ms. Allocated memory is still 172.0MB. Free memory is still 136.2MB. There was no memory consumed. Max. memory is 16.1GB. [2024-01-31 16:41:25,146 INFO L158 Benchmark]: CACSL2BoogieTranslator took 699.89ms. Allocated memory is still 172.0MB. Free memory was 137.3MB in the beginning and 91.2MB in the end (delta: 46.1MB). Peak memory consumption was 46.1MB. Max. memory is 16.1GB. [2024-01-31 16:41:25,146 INFO L158 Benchmark]: Boogie Procedure Inliner took 69.89ms. Allocated memory is still 172.0MB. Free memory was 91.2MB in the beginning and 89.1MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2024-01-31 16:41:25,147 INFO L158 Benchmark]: Boogie Preprocessor took 64.65ms. Allocated memory is still 172.0MB. Free memory was 89.1MB in the beginning and 87.0MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2024-01-31 16:41:25,147 INFO L158 Benchmark]: RCFGBuilder took 443.91ms. Allocated memory is still 172.0MB. Free memory was 87.0MB in the beginning and 52.1MB in the end (delta: 34.9MB). Peak memory consumption was 33.6MB. Max. memory is 16.1GB. [2024-01-31 16:41:25,147 INFO L158 Benchmark]: TraceAbstraction took 6097.22ms. Allocated memory was 172.0MB in the beginning and 805.3MB in the end (delta: 633.3MB). Free memory was 51.3MB in the beginning and 599.8MB in the end (delta: -548.5MB). Peak memory consumption was 83.4MB. Max. memory is 16.1GB. [2024-01-31 16:41:25,148 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 109.1MB. Free memory is still 68.1MB. There was no memory consumed. Max. memory is 16.1GB. * CDTParser took 0.15ms. Allocated memory is still 172.0MB. Free memory is still 136.2MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 699.89ms. Allocated memory is still 172.0MB. Free memory was 137.3MB in the beginning and 91.2MB in the end (delta: 46.1MB). Peak memory consumption was 46.1MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 69.89ms. Allocated memory is still 172.0MB. Free memory was 91.2MB in the beginning and 89.1MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 64.65ms. Allocated memory is still 172.0MB. Free memory was 89.1MB in the beginning and 87.0MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 443.91ms. Allocated memory is still 172.0MB. Free memory was 87.0MB in the beginning and 52.1MB in the end (delta: 34.9MB). Peak memory consumption was 33.6MB. Max. memory is 16.1GB. * TraceAbstraction took 6097.22ms. Allocated memory was 172.0MB in the beginning and 805.3MB in the end (delta: 633.3MB). Free memory was 51.3MB in the beginning and 599.8MB in the end (delta: -548.5MB). Peak memory consumption was 83.4MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 710]: 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 7 procedures, 79 locations, 7 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: 5.9s, OverallIterations: 6, TraceHistogramMax: 1, PathProgramHistogramMax: 2, EmptinessCheckTime: 0.0s, AutomataDifference: 4.9s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.1s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 417 SdHoareTripleChecker+Valid, 0.9s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 380 mSDsluCounter, 105 SdHoareTripleChecker+Invalid, 0.7s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 71 mSDsCounter, 25 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 1084 IncrementalHoareTripleChecker+Invalid, 1109 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 25 mSolverCounterUnsat, 34 mSDtfsCounter, 1084 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 52 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 28 ImplicationChecksByTransitivity, 0.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=308occurred in iteration=1, InterpolantAutomatonStates: 45, 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, 0.5s InterpolantComputationTime, 106 NumberOfCodeBlocks, 106 NumberOfCodeBlocksAsserted, 6 NumberOfCheckSat, 100 ConstructedInterpolants, 0 QuantifiedInterpolants, 194 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 6 InterpolantComputations, 6 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 1 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2024-01-31 16:41:25,168 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Ended with exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: TRUE