./Ultimate.py --spec ../../../trunk/examples/svcomp/properties/unreach-call.prp --file ../../../trunk/examples/svcomp/pthread/sync01.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/sync01.yml/witness.yml --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 59af5db6 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/sync01.i ./goblint.2023-12-19_14-39-08.files/SV-COMP24_unreach-call/sync01.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-dev-59af5db-m [2024-02-02 09:11:22,755 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-02-02 09:11:22,795 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-02-02 09:11:22,798 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-02-02 09:11:22,799 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-02-02 09:11:22,817 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-02-02 09:11:22,818 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-02-02 09:11:22,819 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-02-02 09:11:22,819 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-02-02 09:11:22,821 INFO L153 SettingsManager]: * Use memory slicer=true [2024-02-02 09:11:22,821 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-02-02 09:11:22,821 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-02-02 09:11:22,822 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-02-02 09:11:22,824 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-02-02 09:11:22,825 INFO L153 SettingsManager]: * Use SBE=true [2024-02-02 09:11:22,825 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-02-02 09:11:22,825 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-02-02 09:11:22,825 INFO L153 SettingsManager]: * sizeof long=4 [2024-02-02 09:11:22,826 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-02-02 09:11:22,826 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-02-02 09:11:22,826 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-02-02 09:11:22,826 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-02-02 09:11:22,827 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-02-02 09:11:22,827 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-02-02 09:11:22,827 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-02-02 09:11:22,827 INFO L153 SettingsManager]: * sizeof long double=12 [2024-02-02 09:11:22,827 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-02-02 09:11:22,828 INFO L153 SettingsManager]: * Use constant arrays=true [2024-02-02 09:11:22,829 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-02-02 09:11:22,829 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-02-02 09:11:22,830 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-02-02 09:11:22,830 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-02-02 09:11:22,830 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-02-02 09:11:22,830 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-02-02 09:11:22,830 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-02-02 09:11:22,831 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-02-02 09:11:22,831 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-02-02 09:11:22,831 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-02-02 09:11:22,831 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-02-02 09:11:22,831 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-02-02 09:11:22,831 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2024-02-02 09:11:22,832 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-02-02 09:11:22,832 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-02-02 09:11:22,832 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessparser: Only consider loop invariants -> false [2024-02-02 09:11:23,060 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-02-02 09:11:23,085 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-02-02 09:11:23,088 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-02-02 09:11:23,089 INFO L270 PluginConnector]: Initializing Witness Parser... [2024-02-02 09:11:23,089 INFO L274 PluginConnector]: Witness Parser initialized [2024-02-02 09:11:23,090 INFO L431 ainManager$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/sync01.yml/witness.yml [2024-02-02 09:11:23,228 INFO L270 PluginConnector]: Initializing CDTParser... [2024-02-02 09:11:23,228 INFO L274 PluginConnector]: CDTParser initialized [2024-02-02 09:11:23,228 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread/sync01.i [2024-02-02 09:11:24,305 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-02-02 09:11:24,525 INFO L384 CDTParser]: Found 1 translation units. [2024-02-02 09:11:24,526 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread/sync01.i [2024-02-02 09:11:24,541 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/055074037/0b76f8744e2443d7bfb254b0e9bd3784/FLAGd7d3bbddd [2024-02-02 09:11:24,552 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/055074037/0b76f8744e2443d7bfb254b0e9bd3784 [2024-02-02 09:11:24,553 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-02-02 09:11:24,554 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2024-02-02 09:11:24,556 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-02-02 09:11:24,556 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-02-02 09:11:24,561 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-02-02 09:11:24,562 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 02.02 09:11:23" (1/2) ... [2024-02-02 09:11:24,563 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2af93b44 and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 02.02 09:11:24, skipping insertion in model container [2024-02-02 09:11:24,563 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 02.02 09:11:23" (1/2) ... [2024-02-02 09:11:24,564 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@4ab3ca00 and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 02.02 09:11:24, skipping insertion in model container [2024-02-02 09:11:24,564 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.02 09:11:24" (2/2) ... [2024-02-02 09:11:24,564 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2af93b44 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.02 09:11:24, skipping insertion in model container [2024-02-02 09:11:24,564 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.02 09:11:24" (2/2) ... [2024-02-02 09:11:24,565 INFO L86 nessWitnessExtractor]: Extracting all invariants from correctness witness [2024-02-02 09:11:24,606 INFO L99 nessWitnessExtractor]: Found the following entries in the witness: [2024-02-02 09:11:24,607 INFO L101 nessWitnessExtractor]: Location invariant before [L939-L939] (num == 1) && ((unsigned long )arg == 0UL) [2024-02-02 09:11:24,608 INFO L101 nessWitnessExtractor]: Location invariant before [L935-L935] (unsigned long )arg == 0UL [2024-02-02 09:11:24,608 INFO L101 nessWitnessExtractor]: Location invariant before [L956-L956] num == 0 [2024-02-02 09:11:24,608 INFO L101 nessWitnessExtractor]: Location invariant before [L960-L960] num == 1 [2024-02-02 09:11:24,608 INFO L101 nessWitnessExtractor]: Location invariant before [L958-L958] num == 1 [2024-02-02 09:11:24,609 INFO L101 nessWitnessExtractor]: Location invariant before [L951-L951] (unsigned long )arg == 0UL [2024-02-02 09:11:24,609 INFO L101 nessWitnessExtractor]: Location invariant before [L945-L945] (unsigned long )arg == 0UL [2024-02-02 09:11:24,609 INFO L101 nessWitnessExtractor]: Location invariant before [L941-L941] (unsigned long )arg == 0UL [2024-02-02 09:11:24,609 INFO L101 nessWitnessExtractor]: Location invariant before [L959-L959] num == 1 [2024-02-02 09:11:24,609 INFO L101 nessWitnessExtractor]: Location invariant before [L948-L948] (num == 1) && ((unsigned long )arg == 0UL) [2024-02-02 09:11:24,609 INFO L101 nessWitnessExtractor]: Location invariant after [L946-L947] (num == 0) && ((unsigned long )arg == 0UL) [2024-02-02 09:11:24,609 INFO L101 nessWitnessExtractor]: Loop invariant at [L946-L947] ((0 <= num) && (num <= 1)) && ((unsigned long )arg == 0UL) [2024-02-02 09:11:24,610 INFO L101 nessWitnessExtractor]: Location invariant before [L938-L938] (num == 0) && ((unsigned long )arg == 0UL) [2024-02-02 09:11:24,610 INFO L101 nessWitnessExtractor]: Loop invariant at [L936-L937] ((0 <= num) && (num <= 1)) && ((unsigned long )arg == 0UL) [2024-02-02 09:11:24,610 INFO L101 nessWitnessExtractor]: Location invariant after [L936-L937] (num == 1) && ((unsigned long )arg == 0UL) [2024-02-02 09:11:24,610 INFO L101 nessWitnessExtractor]: Location invariant before [L957-L957] num == 1 [2024-02-02 09:11:24,610 INFO L101 nessWitnessExtractor]: Location invariant before [L940-L940] (unsigned long )arg == 0UL [2024-02-02 09:11:24,610 INFO L101 nessWitnessExtractor]: Location invariant before [L949-L949] (num == 0) && ((unsigned long )arg == 0UL) [2024-02-02 09:11:24,610 INFO L101 nessWitnessExtractor]: Location invariant before [L950-L950] (unsigned long )arg == 0UL [2024-02-02 09:11:24,649 INFO L177 MainTranslator]: Built tables and reachable declarations [2024-02-02 09:11:25,058 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/sync01.i[42004,42017] [2024-02-02 09:11:25,062 INFO L209 PostProcessor]: Analyzing one entry point: main [2024-02-02 09:11:25,073 INFO L202 MainTranslator]: Completed pre-run Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local [2024-02-02 09:11:25,158 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/sync01.i[42004,42017] [2024-02-02 09:11:25,159 INFO L209 PostProcessor]: Analyzing one entry point: main [2024-02-02 09:11:25,204 INFO L206 MainTranslator]: Completed translation [2024-02-02 09:11:25,204 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.02 09:11:25 WrapperNode [2024-02-02 09:11:25,204 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-02-02 09:11:25,205 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-02-02 09:11:25,205 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-02-02 09:11:25,205 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-02-02 09:11:25,211 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.02 09:11:25" (1/1) ... [2024-02-02 09:11:25,236 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.02 09:11:25" (1/1) ... [2024-02-02 09:11:25,270 INFO L138 Inliner]: procedures = 269, calls = 50, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 77 [2024-02-02 09:11:25,271 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-02-02 09:11:25,272 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-02-02 09:11:25,272 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-02-02 09:11:25,274 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-02-02 09:11:25,286 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.02 09:11:25" (1/1) ... [2024-02-02 09:11:25,286 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.02 09:11:25" (1/1) ... [2024-02-02 09:11:25,289 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.02 09:11:25" (1/1) ... [2024-02-02 09:11:25,300 INFO L175 MemorySlicer]: Split 27 memory accesses to 6 slices as follows [2, 5, 8, 2, 8, 2]. 30 percent of accesses are in the largest equivalence class. The 23 initializations are split as follows [2, 5, 8, 0, 8, 0]. The 2 writes are split as follows [0, 0, 0, 1, 0, 1]. [2024-02-02 09:11:25,301 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.02 09:11:25" (1/1) ... [2024-02-02 09:11:25,301 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.02 09:11:25" (1/1) ... [2024-02-02 09:11:25,306 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.02 09:11:25" (1/1) ... [2024-02-02 09:11:25,308 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.02 09:11:25" (1/1) ... [2024-02-02 09:11:25,310 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.02 09:11:25" (1/1) ... [2024-02-02 09:11:25,311 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.02 09:11:25" (1/1) ... [2024-02-02 09:11:25,313 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-02-02 09:11:25,314 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-02-02 09:11:25,314 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-02-02 09:11:25,314 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-02-02 09:11:25,315 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.02 09:11:25" (1/1) ... [2024-02-02 09:11:25,326 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-02-02 09:11:25,332 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-02-02 09:11:25,345 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) [2024-02-02 09:11:25,355 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 [2024-02-02 09:11:25,376 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2024-02-02 09:11:25,376 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2024-02-02 09:11:25,376 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexUnlock [2024-02-02 09:11:25,377 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2024-02-02 09:11:25,377 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2024-02-02 09:11:25,377 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#2 [2024-02-02 09:11:25,377 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#3 [2024-02-02 09:11:25,377 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#4 [2024-02-02 09:11:25,377 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#5 [2024-02-02 09:11:25,378 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2024-02-02 09:11:25,378 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2024-02-02 09:11:25,378 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2024-02-02 09:11:25,378 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2024-02-02 09:11:25,378 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-02-02 09:11:25,378 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2024-02-02 09:11:25,378 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#2 [2024-02-02 09:11:25,378 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#3 [2024-02-02 09:11:25,378 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#4 [2024-02-02 09:11:25,379 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#5 [2024-02-02 09:11:25,379 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2024-02-02 09:11:25,379 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-02-02 09:11:25,379 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-02-02 09:11:25,379 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-02-02 09:11:25,379 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2024-02-02 09:11:25,379 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#3 [2024-02-02 09:11:25,379 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#4 [2024-02-02 09:11:25,379 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#5 [2024-02-02 09:11:25,380 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-02-02 09:11:25,380 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-02-02 09:11:25,381 WARN L214 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2024-02-02 09:11:25,519 INFO L244 CfgBuilder]: Building ICFG [2024-02-02 09:11:25,521 INFO L270 CfgBuilder]: Building CFG for each procedure with an implementation [2024-02-02 09:11:25,710 INFO L289 CfgBuilder]: Ommited future-live optimization because the input is a concurrent program. [2024-02-02 09:11:25,710 INFO L293 CfgBuilder]: Performing block encoding [2024-02-02 09:11:25,834 INFO L315 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-02-02 09:11:25,835 INFO L320 CfgBuilder]: Removed 2 assume(true) statements. [2024-02-02 09:11:25,836 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.02 09:11:25 BoogieIcfgContainer [2024-02-02 09:11:25,836 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-02-02 09:11:25,839 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-02-02 09:11:25,840 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-02-02 09:11:25,842 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-02-02 09:11:25,842 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 02.02 09:11:23" (1/4) ... [2024-02-02 09:11:25,843 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5089c135 and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CORRECTNESS_WITNESS 02.02 09:11:25, skipping insertion in model container [2024-02-02 09:11:25,844 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 02.02 09:11:24" (2/4) ... [2024-02-02 09:11:25,844 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5089c135 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.02 09:11:25, skipping insertion in model container [2024-02-02 09:11:25,844 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.02 09:11:25" (3/4) ... [2024-02-02 09:11:25,845 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5089c135 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.02 09:11:25, skipping insertion in model container [2024-02-02 09:11:25,845 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.02 09:11:25" (4/4) ... [2024-02-02 09:11:25,846 INFO L112 eAbstractionObserver]: Analyzing ICFG sync01.i [2024-02-02 09:11:25,861 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-02-02 09:11:25,861 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 22 error locations. [2024-02-02 09:11:25,862 INFO L518 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-02-02 09:11:25,940 INFO L144 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2024-02-02 09:11:25,973 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 80 places, 76 transitions, 166 flow [2024-02-02 09:11:26,012 INFO L124 PetriNetUnfolderBase]: 3/74 cut-off events. [2024-02-02 09:11:26,013 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2024-02-02 09:11:26,016 INFO L83 FinitePrefix]: Finished finitePrefix Result has 83 conditions, 74 events. 3/74 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 143 event pairs, 0 based on Foata normal form. 0/49 useless extension candidates. Maximal degree in co-relation 55. Up to 2 conditions per place. [2024-02-02 09:11:26,016 INFO L82 GeneralOperation]: Start removeDead. Operand has 80 places, 76 transitions, 166 flow [2024-02-02 09:11:26,020 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 76 places, 71 transitions, 154 flow [2024-02-02 09:11:26,032 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-02-02 09:11:26,040 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;@305aa023, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-02-02 09:11:26,040 INFO L358 AbstractCegarLoop]: Starting to check reachability of 40 error locations. [2024-02-02 09:11:26,044 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-02-02 09:11:26,044 INFO L124 PetriNetUnfolderBase]: 0/1 cut-off events. [2024-02-02 09:11:26,044 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-02-02 09:11:26,044 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-02-02 09:11:26,045 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1] [2024-02-02 09:11:26,045 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [thread1Err0ASSERT_VIOLATIONWITNESS_INVARIANT, thread1Err1ASSERT_VIOLATIONWITNESS_INVARIANT, thread1Err3ASSERT_VIOLATIONWITNESS_INVARIANT (and 37 more)] === [2024-02-02 09:11:26,078 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-02 09:11:26,078 INFO L85 PathProgramCache]: Analyzing trace with hash 10593, now seen corresponding path program 1 times [2024-02-02 09:11:26,085 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-02 09:11:26,086 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1791671334] [2024-02-02 09:11:26,086 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-02 09:11:26,086 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-02 09:11:26,279 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-02 09:11:26,348 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-02 09:11:26,348 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-02 09:11:26,349 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1791671334] [2024-02-02 09:11:26,349 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1791671334] provided 1 perfect and 0 imperfect interpolant sequences [2024-02-02 09:11:26,349 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-02-02 09:11:26,350 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-02-02 09:11:26,351 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [789730200] [2024-02-02 09:11:26,351 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-02 09:11:26,358 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-02-02 09:11:26,362 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-02 09:11:26,379 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-02-02 09:11:26,382 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-02-02 09:11:26,435 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 39 out of 76 [2024-02-02 09:11:26,437 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 76 places, 71 transitions, 154 flow. Second operand has 3 states, 3 states have (on average 39.666666666666664) internal successors, (119), 3 states have internal predecessors, (119), 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) [2024-02-02 09:11:26,437 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-02 09:11:26,437 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 39 of 76 [2024-02-02 09:11:26,438 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-02 09:11:26,575 INFO L124 PetriNetUnfolderBase]: 339/883 cut-off events. [2024-02-02 09:11:26,576 INFO L125 PetriNetUnfolderBase]: For 39/39 co-relation queries the response was YES. [2024-02-02 09:11:26,579 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1542 conditions, 883 events. 339/883 cut-off events. For 39/39 co-relation queries the response was YES. Maximal size of possible extension queue 55. Compared 5302 event pairs, 112 based on Foata normal form. 48/794 useless extension candidates. Maximal degree in co-relation 1361. Up to 320 conditions per place. [2024-02-02 09:11:26,584 INFO L140 encePairwiseOnDemand]: 65/76 looper letters, 40 selfloop transitions, 6 changer transitions 0/83 dead transitions. [2024-02-02 09:11:26,584 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 77 places, 83 transitions, 273 flow [2024-02-02 09:11:26,585 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-02-02 09:11:26,587 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-02-02 09:11:26,592 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 169 transitions. [2024-02-02 09:11:26,594 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.7412280701754386 [2024-02-02 09:11:26,595 INFO L175 Difference]: Start difference. First operand has 76 places, 71 transitions, 154 flow. Second operand 3 states and 169 transitions. [2024-02-02 09:11:26,596 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 77 places, 83 transitions, 273 flow [2024-02-02 09:11:26,598 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 73 places, 83 transitions, 263 flow, removed 0 selfloop flow, removed 4 redundant places. [2024-02-02 09:11:26,601 INFO L231 Difference]: Finished difference. Result has 75 places, 72 transitions, 184 flow [2024-02-02 09:11:26,603 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=76, PETRI_DIFFERENCE_MINUEND_FLOW=144, PETRI_DIFFERENCE_MINUEND_PLACES=71, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=70, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=64, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=184, PETRI_PLACES=75, PETRI_TRANSITIONS=72} [2024-02-02 09:11:26,607 INFO L281 CegarLoopForPetriNet]: 76 programPoint places, -1 predicate places. [2024-02-02 09:11:26,608 INFO L495 AbstractCegarLoop]: Abstraction has has 75 places, 72 transitions, 184 flow [2024-02-02 09:11:26,608 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 39.666666666666664) internal successors, (119), 3 states have internal predecessors, (119), 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) [2024-02-02 09:11:26,608 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-02-02 09:11:26,608 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2024-02-02 09:11:26,608 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-02-02 09:11:26,609 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [thread1Err0ASSERT_VIOLATIONWITNESS_INVARIANT, thread1Err1ASSERT_VIOLATIONWITNESS_INVARIANT, thread1Err3ASSERT_VIOLATIONWITNESS_INVARIANT (and 37 more)] === [2024-02-02 09:11:26,609 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-02 09:11:26,609 INFO L85 PathProgramCache]: Analyzing trace with hash 328753, now seen corresponding path program 1 times [2024-02-02 09:11:26,609 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-02 09:11:26,610 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [980777150] [2024-02-02 09:11:26,610 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-02 09:11:26,610 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-02 09:11:26,641 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-02 09:11:26,666 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-02 09:11:26,666 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-02 09:11:26,667 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [980777150] [2024-02-02 09:11:26,667 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [980777150] provided 1 perfect and 0 imperfect interpolant sequences [2024-02-02 09:11:26,667 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-02-02 09:11:26,667 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-02-02 09:11:26,667 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [122448057] [2024-02-02 09:11:26,667 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-02 09:11:26,668 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-02-02 09:11:26,669 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-02 09:11:26,669 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-02-02 09:11:26,669 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-02-02 09:11:26,712 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 36 out of 76 [2024-02-02 09:11:26,714 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 75 places, 72 transitions, 184 flow. Second operand has 3 states, 3 states have (on average 37.0) internal successors, (111), 3 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-02 09:11:26,714 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-02 09:11:26,714 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 36 of 76 [2024-02-02 09:11:26,715 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-02 09:11:26,745 INFO L124 PetriNetUnfolderBase]: 41/130 cut-off events. [2024-02-02 09:11:26,745 INFO L125 PetriNetUnfolderBase]: For 69/69 co-relation queries the response was YES. [2024-02-02 09:11:26,746 INFO L83 FinitePrefix]: Finished finitePrefix Result has 241 conditions, 130 events. 41/130 cut-off events. For 69/69 co-relation queries the response was YES. Maximal size of possible extension queue 13. Compared 501 event pairs, 31 based on Foata normal form. 28/124 useless extension candidates. Maximal degree in co-relation 229. Up to 76 conditions per place. [2024-02-02 09:11:26,747 INFO L140 encePairwiseOnDemand]: 68/76 looper letters, 14 selfloop transitions, 1 changer transitions 0/31 dead transitions. [2024-02-02 09:11:26,747 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 39 places, 31 transitions, 106 flow [2024-02-02 09:11:26,748 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-02-02 09:11:26,748 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-02-02 09:11:26,752 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 130 transitions. [2024-02-02 09:11:26,754 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5701754385964912 [2024-02-02 09:11:26,754 INFO L175 Difference]: Start difference. First operand has 75 places, 72 transitions, 184 flow. Second operand 3 states and 130 transitions. [2024-02-02 09:11:26,754 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 39 places, 31 transitions, 106 flow [2024-02-02 09:11:26,754 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 36 places, 31 transitions, 100 flow, removed 0 selfloop flow, removed 3 redundant places. [2024-02-02 09:11:26,755 INFO L231 Difference]: Finished difference. Result has 36 places, 31 transitions, 72 flow [2024-02-02 09:11:26,755 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=76, PETRI_DIFFERENCE_MINUEND_FLOW=70, PETRI_DIFFERENCE_MINUEND_PLACES=34, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=31, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=30, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=72, PETRI_PLACES=36, PETRI_TRANSITIONS=31} [2024-02-02 09:11:26,756 INFO L281 CegarLoopForPetriNet]: 76 programPoint places, -40 predicate places. [2024-02-02 09:11:26,756 INFO L495 AbstractCegarLoop]: Abstraction has has 36 places, 31 transitions, 72 flow [2024-02-02 09:11:26,757 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 37.0) internal successors, (111), 3 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-02 09:11:26,757 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-02-02 09:11:26,757 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-02-02 09:11:26,757 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-02-02 09:11:26,757 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting thread1Err0ASSERT_VIOLATIONWITNESS_INVARIANT === [thread1Err0ASSERT_VIOLATIONWITNESS_INVARIANT, thread1Err1ASSERT_VIOLATIONWITNESS_INVARIANT, thread1Err3ASSERT_VIOLATIONWITNESS_INVARIANT (and 37 more)] === [2024-02-02 09:11:26,757 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-02 09:11:26,758 INFO L85 PathProgramCache]: Analyzing trace with hash 1260256184, now seen corresponding path program 1 times [2024-02-02 09:11:26,758 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-02 09:11:26,759 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2085668387] [2024-02-02 09:11:26,759 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-02 09:11:26,759 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-02 09:11:26,795 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-02 09:11:26,932 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-02 09:11:26,933 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-02 09:11:26,933 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2085668387] [2024-02-02 09:11:26,933 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2085668387] provided 1 perfect and 0 imperfect interpolant sequences [2024-02-02 09:11:26,933 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-02-02 09:11:26,933 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-02-02 09:11:26,934 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [369554618] [2024-02-02 09:11:26,934 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-02 09:11:26,934 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-02-02 09:11:26,934 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-02 09:11:26,935 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-02-02 09:11:26,935 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-02-02 09:11:26,971 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 45 out of 76 [2024-02-02 09:11:26,973 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 36 places, 31 transitions, 72 flow. Second operand has 4 states, 4 states have (on average 46.75) internal successors, (187), 4 states have internal predecessors, (187), 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) [2024-02-02 09:11:26,973 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-02 09:11:26,973 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 45 of 76 [2024-02-02 09:11:26,973 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-02 09:11:27,095 INFO L124 PetriNetUnfolderBase]: 50/163 cut-off events. [2024-02-02 09:11:27,108 INFO L125 PetriNetUnfolderBase]: For 14/14 co-relation queries the response was YES. [2024-02-02 09:11:27,109 INFO L83 FinitePrefix]: Finished finitePrefix Result has 287 conditions, 163 events. 50/163 cut-off events. For 14/14 co-relation queries the response was YES. Maximal size of possible extension queue 14. Compared 637 event pairs, 16 based on Foata normal form. 8/142 useless extension candidates. Maximal degree in co-relation 277. Up to 74 conditions per place. [2024-02-02 09:11:27,109 INFO L140 encePairwiseOnDemand]: 73/76 looper letters, 17 selfloop transitions, 2 changer transitions 0/35 dead transitions. [2024-02-02 09:11:27,110 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 38 places, 35 transitions, 121 flow [2024-02-02 09:11:27,110 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-02-02 09:11:27,110 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-02-02 09:11:27,112 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 200 transitions. [2024-02-02 09:11:27,112 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6578947368421053 [2024-02-02 09:11:27,112 INFO L175 Difference]: Start difference. First operand has 36 places, 31 transitions, 72 flow. Second operand 4 states and 200 transitions. [2024-02-02 09:11:27,112 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 38 places, 35 transitions, 121 flow [2024-02-02 09:11:27,113 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 37 places, 35 transitions, 120 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-02-02 09:11:27,113 INFO L231 Difference]: Finished difference. Result has 37 places, 30 transitions, 73 flow [2024-02-02 09:11:27,113 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=76, PETRI_DIFFERENCE_MINUEND_FLOW=69, PETRI_DIFFERENCE_MINUEND_PLACES=34, 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=4, PETRI_FLOW=73, PETRI_PLACES=37, PETRI_TRANSITIONS=30} [2024-02-02 09:11:27,114 INFO L281 CegarLoopForPetriNet]: 76 programPoint places, -39 predicate places. [2024-02-02 09:11:27,114 INFO L495 AbstractCegarLoop]: Abstraction has has 37 places, 30 transitions, 73 flow [2024-02-02 09:11:27,114 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 46.75) internal successors, (187), 4 states have internal predecessors, (187), 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) [2024-02-02 09:11:27,114 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-02-02 09:11:27,115 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-02-02 09:11:27,115 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-02-02 09:11:27,115 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting thread2Err0ASSERT_VIOLATIONWITNESS_INVARIANT === [thread1Err0ASSERT_VIOLATIONWITNESS_INVARIANT, thread1Err1ASSERT_VIOLATIONWITNESS_INVARIANT, thread1Err3ASSERT_VIOLATIONWITNESS_INVARIANT (and 37 more)] === [2024-02-02 09:11:27,115 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-02 09:11:27,115 INFO L85 PathProgramCache]: Analyzing trace with hash -76161404, now seen corresponding path program 1 times [2024-02-02 09:11:27,115 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-02 09:11:27,115 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [382502554] [2024-02-02 09:11:27,116 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-02 09:11:27,119 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-02 09:11:27,138 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-02 09:11:27,238 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-02 09:11:27,239 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-02 09:11:27,239 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [382502554] [2024-02-02 09:11:27,240 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [382502554] provided 1 perfect and 0 imperfect interpolant sequences [2024-02-02 09:11:27,240 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-02-02 09:11:27,241 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-02-02 09:11:27,241 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [859157134] [2024-02-02 09:11:27,241 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-02 09:11:27,241 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-02-02 09:11:27,242 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-02 09:11:27,243 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-02-02 09:11:27,243 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-02-02 09:11:27,271 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 45 out of 76 [2024-02-02 09:11:27,271 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 37 places, 30 transitions, 73 flow. Second operand has 4 states, 4 states have (on average 47.25) internal successors, (189), 4 states have internal predecessors, (189), 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) [2024-02-02 09:11:27,271 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-02 09:11:27,272 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 45 of 76 [2024-02-02 09:11:27,272 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-02 09:11:27,322 INFO L124 PetriNetUnfolderBase]: 45/153 cut-off events. [2024-02-02 09:11:27,322 INFO L125 PetriNetUnfolderBase]: For 10/10 co-relation queries the response was YES. [2024-02-02 09:11:27,324 INFO L83 FinitePrefix]: Finished finitePrefix Result has 268 conditions, 153 events. 45/153 cut-off events. For 10/10 co-relation queries the response was YES. Maximal size of possible extension queue 16. Compared 611 event pairs, 8 based on Foata normal form. 8/140 useless extension candidates. Maximal degree in co-relation 258. Up to 56 conditions per place. [2024-02-02 09:11:27,324 INFO L140 encePairwiseOnDemand]: 73/76 looper letters, 19 selfloop transitions, 2 changer transitions 0/36 dead transitions. [2024-02-02 09:11:27,325 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 39 places, 36 transitions, 127 flow [2024-02-02 09:11:27,325 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-02-02 09:11:27,325 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-02-02 09:11:27,326 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 202 transitions. [2024-02-02 09:11:27,326 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6644736842105263 [2024-02-02 09:11:27,326 INFO L175 Difference]: Start difference. First operand has 37 places, 30 transitions, 73 flow. Second operand 4 states and 202 transitions. [2024-02-02 09:11:27,326 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 39 places, 36 transitions, 127 flow [2024-02-02 09:11:27,327 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 37 places, 36 transitions, 124 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-02-02 09:11:27,328 INFO L231 Difference]: Finished difference. Result has 37 places, 29 transitions, 72 flow [2024-02-02 09:11:27,328 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=76, PETRI_DIFFERENCE_MINUEND_FLOW=68, PETRI_DIFFERENCE_MINUEND_PLACES=34, 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=4, PETRI_FLOW=72, PETRI_PLACES=37, PETRI_TRANSITIONS=29} [2024-02-02 09:11:27,329 INFO L281 CegarLoopForPetriNet]: 76 programPoint places, -39 predicate places. [2024-02-02 09:11:27,329 INFO L495 AbstractCegarLoop]: Abstraction has has 37 places, 29 transitions, 72 flow [2024-02-02 09:11:27,330 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 47.25) internal successors, (189), 4 states have internal predecessors, (189), 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) [2024-02-02 09:11:27,330 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-02-02 09:11:27,330 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-02-02 09:11:27,330 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-02-02 09:11:27,330 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting thread1Err1ASSERT_VIOLATIONWITNESS_INVARIANT === [thread1Err0ASSERT_VIOLATIONWITNESS_INVARIANT, thread1Err1ASSERT_VIOLATIONWITNESS_INVARIANT, thread1Err3ASSERT_VIOLATIONWITNESS_INVARIANT (and 37 more)] === [2024-02-02 09:11:27,331 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-02 09:11:27,331 INFO L85 PathProgramCache]: Analyzing trace with hash 1983216610, now seen corresponding path program 1 times [2024-02-02 09:11:27,331 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-02 09:11:27,332 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [29034069] [2024-02-02 09:11:27,334 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-02 09:11:27,334 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-02 09:11:27,347 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-02 09:11:27,393 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-02 09:11:27,393 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-02 09:11:27,394 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [29034069] [2024-02-02 09:11:27,394 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [29034069] provided 1 perfect and 0 imperfect interpolant sequences [2024-02-02 09:11:27,394 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-02-02 09:11:27,394 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-02-02 09:11:27,394 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1308513838] [2024-02-02 09:11:27,394 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-02 09:11:27,395 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-02-02 09:11:27,395 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-02 09:11:27,395 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-02-02 09:11:27,396 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-02-02 09:11:27,449 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 24 out of 76 [2024-02-02 09:11:27,450 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 37 places, 29 transitions, 72 flow. Second operand has 4 states, 4 states have (on average 26.75) internal successors, (107), 4 states have internal predecessors, (107), 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) [2024-02-02 09:11:27,450 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-02 09:11:27,450 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 24 of 76 [2024-02-02 09:11:27,450 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-02 09:11:27,486 INFO L124 PetriNetUnfolderBase]: 66/156 cut-off events. [2024-02-02 09:11:27,487 INFO L125 PetriNetUnfolderBase]: For 22/22 co-relation queries the response was YES. [2024-02-02 09:11:27,487 INFO L83 FinitePrefix]: Finished finitePrefix Result has 339 conditions, 156 events. 66/156 cut-off events. For 22/22 co-relation queries the response was YES. Maximal size of possible extension queue 15. Compared 570 event pairs, 11 based on Foata normal form. 0/146 useless extension candidates. Maximal degree in co-relation 329. Up to 95 conditions per place. [2024-02-02 09:11:27,488 INFO L140 encePairwiseOnDemand]: 72/76 looper letters, 22 selfloop transitions, 2 changer transitions 0/32 dead transitions. [2024-02-02 09:11:27,488 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 38 places, 32 transitions, 131 flow [2024-02-02 09:11:27,488 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-02-02 09:11:27,489 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-02-02 09:11:27,489 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 122 transitions. [2024-02-02 09:11:27,489 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.40131578947368424 [2024-02-02 09:11:27,489 INFO L175 Difference]: Start difference. First operand has 37 places, 29 transitions, 72 flow. Second operand 4 states and 122 transitions. [2024-02-02 09:11:27,490 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 38 places, 32 transitions, 131 flow [2024-02-02 09:11:27,490 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 36 places, 32 transitions, 126 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-02-02 09:11:27,491 INFO L231 Difference]: Finished difference. Result has 36 places, 27 transitions, 69 flow [2024-02-02 09:11:27,491 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=76, PETRI_DIFFERENCE_MINUEND_FLOW=65, PETRI_DIFFERENCE_MINUEND_PLACES=33, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=27, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=25, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=69, PETRI_PLACES=36, PETRI_TRANSITIONS=27} [2024-02-02 09:11:27,492 INFO L281 CegarLoopForPetriNet]: 76 programPoint places, -40 predicate places. [2024-02-02 09:11:27,492 INFO L495 AbstractCegarLoop]: Abstraction has has 36 places, 27 transitions, 69 flow [2024-02-02 09:11:27,492 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 26.75) internal successors, (107), 4 states have internal predecessors, (107), 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) [2024-02-02 09:11:27,492 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-02-02 09:11:27,492 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-02-02 09:11:27,493 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-02-02 09:11:27,493 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting thread2Err1ASSERT_VIOLATIONWITNESS_INVARIANT === [thread1Err0ASSERT_VIOLATIONWITNESS_INVARIANT, thread1Err1ASSERT_VIOLATIONWITNESS_INVARIANT, thread1Err3ASSERT_VIOLATIONWITNESS_INVARIANT (and 37 more)] === [2024-02-02 09:11:27,493 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-02 09:11:27,493 INFO L85 PathProgramCache]: Analyzing trace with hash -1181256049, now seen corresponding path program 1 times [2024-02-02 09:11:27,493 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-02 09:11:27,494 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1434302501] [2024-02-02 09:11:27,494 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-02 09:11:27,494 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-02 09:11:27,502 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-02 09:11:27,548 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-02 09:11:27,548 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-02 09:11:27,548 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1434302501] [2024-02-02 09:11:27,548 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1434302501] provided 1 perfect and 0 imperfect interpolant sequences [2024-02-02 09:11:27,548 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-02-02 09:11:27,548 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-02-02 09:11:27,548 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1258340159] [2024-02-02 09:11:27,548 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-02 09:11:27,549 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-02-02 09:11:27,549 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-02 09:11:27,549 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-02-02 09:11:27,549 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-02-02 09:11:27,615 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 25 out of 76 [2024-02-02 09:11:27,615 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 36 places, 27 transitions, 69 flow. Second operand has 4 states, 4 states have (on average 28.25) internal successors, (113), 4 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) [2024-02-02 09:11:27,615 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-02 09:11:27,615 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 25 of 76 [2024-02-02 09:11:27,615 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-02 09:11:27,650 INFO L124 PetriNetUnfolderBase]: 77/172 cut-off events. [2024-02-02 09:11:27,650 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-02-02 09:11:27,650 INFO L83 FinitePrefix]: Finished finitePrefix Result has 352 conditions, 172 events. 77/172 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 16. Compared 639 event pairs, 21 based on Foata normal form. 0/160 useless extension candidates. Maximal degree in co-relation 341. Up to 82 conditions per place. [2024-02-02 09:11:27,651 INFO L140 encePairwiseOnDemand]: 73/76 looper letters, 20 selfloop transitions, 2 changer transitions 0/30 dead transitions. [2024-02-02 09:11:27,651 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 38 places, 30 transitions, 119 flow [2024-02-02 09:11:27,652 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-02-02 09:11:27,652 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-02-02 09:11:27,652 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 123 transitions. [2024-02-02 09:11:27,653 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.40460526315789475 [2024-02-02 09:11:27,653 INFO L175 Difference]: Start difference. First operand has 36 places, 27 transitions, 69 flow. Second operand 4 states and 123 transitions. [2024-02-02 09:11:27,653 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 38 places, 30 transitions, 119 flow [2024-02-02 09:11:27,653 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 36 places, 30 transitions, 116 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-02-02 09:11:27,654 INFO L231 Difference]: Finished difference. Result has 36 places, 26 transitions, 68 flow [2024-02-02 09:11:27,654 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=76, PETRI_DIFFERENCE_MINUEND_FLOW=64, PETRI_DIFFERENCE_MINUEND_PLACES=33, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=26, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=24, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=68, PETRI_PLACES=36, PETRI_TRANSITIONS=26} [2024-02-02 09:11:27,654 INFO L281 CegarLoopForPetriNet]: 76 programPoint places, -40 predicate places. [2024-02-02 09:11:27,655 INFO L495 AbstractCegarLoop]: Abstraction has has 36 places, 26 transitions, 68 flow [2024-02-02 09:11:27,655 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 28.25) internal successors, (113), 4 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) [2024-02-02 09:11:27,655 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-02-02 09:11:27,655 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-02-02 09:11:27,655 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-02-02 09:11:27,655 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting thread2Err3ASSERT_VIOLATIONWITNESS_INVARIANT === [thread1Err0ASSERT_VIOLATIONWITNESS_INVARIANT, thread1Err1ASSERT_VIOLATIONWITNESS_INVARIANT, thread1Err3ASSERT_VIOLATIONWITNESS_INVARIANT (and 37 more)] === [2024-02-02 09:11:27,656 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-02 09:11:27,656 INFO L85 PathProgramCache]: Analyzing trace with hash -1315683950, now seen corresponding path program 1 times [2024-02-02 09:11:27,656 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-02 09:11:27,656 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1889232056] [2024-02-02 09:11:27,656 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-02 09:11:27,656 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-02 09:11:27,668 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-02-02 09:11:27,668 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-02-02 09:11:27,674 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-02-02 09:11:27,691 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2024-02-02 09:11:27,691 INFO L360 BasicCegarLoop]: Counterexample is feasible [2024-02-02 09:11:27,692 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location thread2Err3ASSERT_VIOLATIONWITNESS_INVARIANT (39 of 40 remaining) [2024-02-02 09:11:27,693 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thread1Err0ASSERT_VIOLATIONWITNESS_INVARIANT (38 of 40 remaining) [2024-02-02 09:11:27,694 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thread1Err1ASSERT_VIOLATIONWITNESS_INVARIANT (37 of 40 remaining) [2024-02-02 09:11:27,694 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thread1Err3ASSERT_VIOLATIONWITNESS_INVARIANT (36 of 40 remaining) [2024-02-02 09:11:27,694 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thread1Err4ASSERT_VIOLATIONWITNESS_INVARIANT (35 of 40 remaining) [2024-02-02 09:11:27,694 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thread1Err2ASSERT_VIOLATIONWITNESS_INVARIANT (34 of 40 remaining) [2024-02-02 09:11:27,694 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thread1Err5ASSERT_VIOLATIONWITNESS_INVARIANT (33 of 40 remaining) [2024-02-02 09:11:27,694 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thread1Err6ASSERT_VIOLATIONWITNESS_INVARIANT (32 of 40 remaining) [2024-02-02 09:11:27,695 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thread1Err7ASSERT_VIOLATIONWITNESS_INVARIANT (31 of 40 remaining) [2024-02-02 09:11:27,695 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thread2Err0ASSERT_VIOLATIONWITNESS_INVARIANT (30 of 40 remaining) [2024-02-02 09:11:27,695 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thread2Err1ASSERT_VIOLATIONWITNESS_INVARIANT (29 of 40 remaining) [2024-02-02 09:11:27,695 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thread2Err3ASSERT_VIOLATIONWITNESS_INVARIANT (28 of 40 remaining) [2024-02-02 09:11:27,695 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thread2Err4ASSERT_VIOLATIONWITNESS_INVARIANT (27 of 40 remaining) [2024-02-02 09:11:27,695 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thread2Err2ASSERT_VIOLATIONWITNESS_INVARIANT (26 of 40 remaining) [2024-02-02 09:11:27,695 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thread2Err5ASSERT_VIOLATIONWITNESS_INVARIANT (25 of 40 remaining) [2024-02-02 09:11:27,696 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thread2Err6ASSERT_VIOLATIONWITNESS_INVARIANT (24 of 40 remaining) [2024-02-02 09:11:27,696 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thread2Err7ASSERT_VIOLATIONWITNESS_INVARIANT (23 of 40 remaining) [2024-02-02 09:11:27,696 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT (22 of 40 remaining) [2024-02-02 09:11:27,696 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (21 of 40 remaining) [2024-02-02 09:11:27,696 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (20 of 40 remaining) [2024-02-02 09:11:27,696 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr3ASSERT_VIOLATIONWITNESS_INVARIANT (19 of 40 remaining) [2024-02-02 09:11:27,697 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr4ASSERT_VIOLATIONWITNESS_INVARIANT (18 of 40 remaining) [2024-02-02 09:11:27,697 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION (17 of 40 remaining) [2024-02-02 09:11:27,697 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (16 of 40 remaining) [2024-02-02 09:11:27,697 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (15 of 40 remaining) [2024-02-02 09:11:27,697 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thread1Err0ASSERT_VIOLATIONWITNESS_INVARIANT (14 of 40 remaining) [2024-02-02 09:11:27,697 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thread1Err1ASSERT_VIOLATIONWITNESS_INVARIANT (13 of 40 remaining) [2024-02-02 09:11:27,698 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thread1Err3ASSERT_VIOLATIONWITNESS_INVARIANT (12 of 40 remaining) [2024-02-02 09:11:27,698 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thread1Err4ASSERT_VIOLATIONWITNESS_INVARIANT (11 of 40 remaining) [2024-02-02 09:11:27,698 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thread1Err2ASSERT_VIOLATIONWITNESS_INVARIANT (10 of 40 remaining) [2024-02-02 09:11:27,698 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thread1Err5ASSERT_VIOLATIONWITNESS_INVARIANT (9 of 40 remaining) [2024-02-02 09:11:27,698 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thread1Err6ASSERT_VIOLATIONWITNESS_INVARIANT (8 of 40 remaining) [2024-02-02 09:11:27,698 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thread1Err7ASSERT_VIOLATIONWITNESS_INVARIANT (7 of 40 remaining) [2024-02-02 09:11:27,699 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thread2Err0ASSERT_VIOLATIONWITNESS_INVARIANT (6 of 40 remaining) [2024-02-02 09:11:27,699 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thread2Err1ASSERT_VIOLATIONWITNESS_INVARIANT (5 of 40 remaining) [2024-02-02 09:11:27,699 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thread2Err4ASSERT_VIOLATIONWITNESS_INVARIANT (4 of 40 remaining) [2024-02-02 09:11:27,699 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thread2Err2ASSERT_VIOLATIONWITNESS_INVARIANT (3 of 40 remaining) [2024-02-02 09:11:27,699 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thread2Err5ASSERT_VIOLATIONWITNESS_INVARIANT (2 of 40 remaining) [2024-02-02 09:11:27,699 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thread2Err6ASSERT_VIOLATIONWITNESS_INVARIANT (1 of 40 remaining) [2024-02-02 09:11:27,700 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thread2Err7ASSERT_VIOLATIONWITNESS_INVARIANT (0 of 40 remaining) [2024-02-02 09:11:27,700 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-02-02 09:11:27,700 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1, 1] [2024-02-02 09:11:27,705 INFO L229 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2024-02-02 09:11:27,705 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2024-02-02 09:11:27,724 INFO L503 ceAbstractionStarter]: Automizer considered 21 witness invariants [2024-02-02 09:11:27,725 INFO L504 ceAbstractionStarter]: WitnessConsidered=21 [2024-02-02 09:11:27,725 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 02.02 09:11:27 BasicIcfg [2024-02-02 09:11:27,725 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2024-02-02 09:11:27,726 INFO L158 Benchmark]: Toolchain (without parser) took 3172.03ms. Allocated memory was 188.7MB in the beginning and 264.2MB in the end (delta: 75.5MB). Free memory was 111.8MB in the beginning and 119.2MB in the end (delta: -7.4MB). Peak memory consumption was 67.8MB. Max. memory is 16.1GB. [2024-02-02 09:11:27,726 INFO L158 Benchmark]: Witness Parser took 0.18ms. Allocated memory is still 188.7MB. Free memory is still 146.4MB. There was no memory consumed. Max. memory is 16.1GB. [2024-02-02 09:11:27,726 INFO L158 Benchmark]: CDTParser took 0.13ms. Allocated memory is still 188.7MB. Free memory is still 159.4MB. There was no memory consumed. Max. memory is 16.1GB. [2024-02-02 09:11:27,727 INFO L158 Benchmark]: CACSL2BoogieTranslator took 648.94ms. Allocated memory is still 188.7MB. Free memory was 111.6MB in the beginning and 134.6MB in the end (delta: -23.0MB). Peak memory consumption was 12.7MB. Max. memory is 16.1GB. [2024-02-02 09:11:27,727 INFO L158 Benchmark]: Boogie Procedure Inliner took 66.55ms. Allocated memory is still 188.7MB. Free memory was 133.6MB in the beginning and 131.5MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2024-02-02 09:11:27,727 INFO L158 Benchmark]: Boogie Preprocessor took 40.93ms. Allocated memory is still 188.7MB. Free memory was 131.5MB in the beginning and 129.3MB in the end (delta: 2.3MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2024-02-02 09:11:27,727 INFO L158 Benchmark]: RCFGBuilder took 522.66ms. Allocated memory is still 188.7MB. Free memory was 129.3MB in the beginning and 84.3MB in the end (delta: 45.0MB). Peak memory consumption was 46.1MB. Max. memory is 16.1GB. [2024-02-02 09:11:27,728 INFO L158 Benchmark]: TraceAbstraction took 1886.18ms. Allocated memory was 188.7MB in the beginning and 264.2MB in the end (delta: 75.5MB). Free memory was 84.3MB in the beginning and 119.2MB in the end (delta: -34.9MB). Peak memory consumption was 38.4MB. Max. memory is 16.1GB. [2024-02-02 09:11:27,729 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 0.18ms. Allocated memory is still 188.7MB. Free memory is still 146.4MB. There was no memory consumed. Max. memory is 16.1GB. * CDTParser took 0.13ms. Allocated memory is still 188.7MB. Free memory is still 159.4MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 648.94ms. Allocated memory is still 188.7MB. Free memory was 111.6MB in the beginning and 134.6MB in the end (delta: -23.0MB). Peak memory consumption was 12.7MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 66.55ms. Allocated memory is still 188.7MB. Free memory was 133.6MB in the beginning and 131.5MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 40.93ms. Allocated memory is still 188.7MB. Free memory was 131.5MB in the beginning and 129.3MB in the end (delta: 2.3MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 522.66ms. Allocated memory is still 188.7MB. Free memory was 129.3MB in the beginning and 84.3MB in the end (delta: 45.0MB). Peak memory consumption was 46.1MB. Max. memory is 16.1GB. * TraceAbstraction took 1886.18ms. Allocated memory was 188.7MB in the beginning and 264.2MB in the end (delta: 75.5MB). Free memory was 84.3MB in the beginning and 119.2MB in the end (delta: -34.9MB). Peak memory consumption was 38.4MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 946]: invariant of correctness witness can be violated invariant of correctness witness can be violated We found a FailurePath: [L930] 0 int num; [L931] 0 pthread_mutex_t m; [L931] 0 pthread_mutex_t m; [L931] 0 pthread_mutex_t m; [L931] 0 pthread_mutex_t m; [L931] 0 pthread_mutex_t m; [L931] 0 pthread_mutex_t m; [L932] 0 pthread_cond_t empty, full; [L932] 0 pthread_cond_t empty, full; [L932] 0 pthread_cond_t empty, full; [L932] 0 pthread_cond_t empty, full; [L932] 0 pthread_cond_t empty, full; [L932] 0 pthread_cond_t empty, full; [L932] 0 pthread_cond_t empty, full; [L932] 0 pthread_cond_t empty, full; [L932] 0 pthread_cond_t empty, full; [L932] 0 pthread_cond_t empty, full; [L932] 0 pthread_cond_t empty, full; [L932] 0 pthread_cond_t empty, full; [L932] 0 pthread_cond_t empty, full; [L932] 0 pthread_cond_t empty, full; [L932] 0 pthread_cond_t empty, full; [L932] 0 pthread_cond_t empty, full; [L932] 0 pthread_cond_t empty, full; [L932] 0 pthread_cond_t empty, full; [L955] 0 pthread_t t1, t2; VAL [empty={4:0}, full={5:0}, m={3:0}, num=0, t1={6:0}, t2={7:0}] [L956] 0 CodeAnnotStmt[Assertion[BinaryExpression[COMPEQ,IdentifierExpression[num],IntegerLiteral[0]]]] [L956] 0 num = 1 VAL [empty={4:0}, full={5:0}, m={3:0}, num=1, t1={6:0}, t2={7:0}] [L957] 0 CodeAnnotStmt[Assertion[BinaryExpression[COMPEQ,IdentifierExpression[num],IntegerLiteral[1]]]] [L958] 0 CodeAnnotStmt[Assertion[BinaryExpression[COMPEQ,IdentifierExpression[num],IntegerLiteral[1]]]] VAL [empty={4:0}, full={5:0}, m={3:0}, num=1, t1={6:0}, t2={7:0}] [L959] 0 CodeAnnotStmt[Assertion[BinaryExpression[COMPEQ,IdentifierExpression[num],IntegerLiteral[1]]]] VAL [empty={4:0}, full={5:0}, m={3:0}, num=1, t1={6:0}, t2={7:0}] [L960] 0 CodeAnnotStmt[Assertion[BinaryExpression[COMPEQ,IdentifierExpression[num],IntegerLiteral[1]]]] [L960] FCALL, FORK 0 pthread_create(&t1, 0, thread1, 0) VAL [arg={0:0}, empty={4:0}, full={5:0}, m={3:0}, num=1, t1={6:0}, t2={7:0}] [L961] FCALL, FORK 0 pthread_create(&t2, 0, thread2, 0) VAL [arg={0:0}, arg={0:0}, empty={4:0}, full={5:0}, m={3:0}, num=1, t1={6:0}, t2={7:0}] [L945] 2 CodeAnnotStmt[Assertion[BinaryExpression[COMPEQ,CastExpression[ACSLType[unsigned long],IdentifierExpression[arg]],IntegerLiteral[0UL]]]] VAL [arg={0:0}, arg={0:0}, arg={0:0}, empty={4:0}, full={5:0}, m={3:0}, num=1] [L946] 2 CodeAnnotStmt[Assertion[BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[COMPLEQ,IntegerLiteral[0],IdentifierExpression[num]],BinaryExpression[COMPLEQ,IdentifierExpression[num],IntegerLiteral[1]]],BinaryExpression[COMPEQ,CastExpression[ACSLType[unsigned long],IdentifierExpression[arg]],IntegerLiteral[0UL]]]]] VAL [arg={0:0}, arg={0:0}, arg={0:0}, empty={4:0}, full={5:0}, m={3:0}, num=1] [L946] COND FALSE 2 !(num == 0) VAL [arg={0:0}, arg={0:0}, arg={0:0}, empty={4:0}, full={5:0}, m={3:0}, num=1] [L946] 2 CodeAnnotStmt[Assertion[BinaryExpression[LOGICAND,BinaryExpression[COMPEQ,IdentifierExpression[num],IntegerLiteral[0]],BinaryExpression[COMPEQ,CastExpression[ACSLType[unsigned long],IdentifierExpression[arg]],IntegerLiteral[0UL]]]]] VAL [arg={0:0}, arg={0:0}, arg={0:0}, empty={4:0}, full={5:0}, m={3:0}, num=1] - UnprovableResult [Line: 935]: Unable to prove that invariant of correctness witness holds Unable to prove that invariant of correctness witness holds Reason: Not analyzed. - UnprovableResult [Line: 936]: Unable to prove that invariant of correctness witness holds Unable to prove that invariant of correctness witness holds Reason: Not analyzed. - UnprovableResult [Line: 936]: Unable to prove that invariant of correctness witness holds Unable to prove that invariant of correctness witness holds Reason: Not analyzed. - UnprovableResult [Line: 938]: Unable to prove that invariant of correctness witness holds Unable to prove that invariant of correctness witness holds Reason: Not analyzed. - UnprovableResult [Line: 936]: Unable to prove that invariant of correctness witness holds Unable to prove that invariant of correctness witness holds Reason: Not analyzed. - UnprovableResult [Line: 939]: Unable to prove that invariant of correctness witness holds Unable to prove that invariant of correctness witness holds Reason: Not analyzed. - UnprovableResult [Line: 940]: Unable to prove that invariant of correctness witness holds Unable to prove that invariant of correctness witness holds Reason: Not analyzed. - UnprovableResult [Line: 941]: Unable to prove that invariant of correctness witness holds Unable to prove that invariant of correctness witness holds Reason: Not analyzed. - UnprovableResult [Line: 945]: Unable to prove that invariant of correctness witness holds Unable to prove that invariant of correctness witness holds Reason: Not analyzed. - UnprovableResult [Line: 946]: Unable to prove that invariant of correctness witness holds Unable to prove that invariant of correctness witness holds Reason: Not analyzed. - UnprovableResult [Line: 948]: Unable to prove that invariant of correctness witness holds Unable to prove that invariant of correctness witness holds Reason: Not analyzed. - UnprovableResult [Line: 946]: Unable to prove that invariant of correctness witness holds Unable to prove that invariant of correctness witness holds Reason: Not analyzed. - UnprovableResult [Line: 949]: Unable to prove that invariant of correctness witness holds Unable to prove that invariant of correctness witness holds Reason: Not analyzed. - UnprovableResult [Line: 950]: Unable to prove that invariant of correctness witness holds Unable to prove that invariant of correctness witness holds Reason: Not analyzed. - UnprovableResult [Line: 951]: Unable to prove that invariant of correctness witness holds Unable to prove that invariant of correctness witness holds Reason: Not analyzed. - UnprovableResult [Line: 956]: Unable to prove that invariant of correctness witness holds Unable to prove that invariant of correctness witness holds Reason: Not analyzed. - UnprovableResult [Line: 957]: Unable to prove that invariant of correctness witness holds Unable to prove that invariant of correctness witness holds Reason: Not analyzed. - UnprovableResult [Line: 958]: Unable to prove that invariant of correctness witness holds Unable to prove that invariant of correctness witness holds Reason: Not analyzed. - UnprovableResult [Line: 959]: Unable to prove that invariant of correctness witness holds Unable to prove that invariant of correctness witness holds Reason: Not analyzed. - UnprovableResult [Line: 960]: Unable to prove that invariant of correctness witness holds Unable to prove that invariant of correctness witness holds Reason: Not analyzed. - UnprovableResult [Line: 966]: Unable to prove that a call to reach_error is unreachable Unable to prove that a call to reach_error is unreachable Reason: Not analyzed. - UnprovableResult [Line: 960]: Unable to prove that petrification did provide enough thread instances (tool internal message) Unable to prove that petrification did provide enough thread instances (tool internal message) Reason: Not analyzed. - UnprovableResult [Line: 961]: Unable to prove that petrification did provide enough thread instances (tool internal message) Unable to prove that petrification did provide enough thread instances (tool internal message) Reason: Not analyzed. - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 5 procedures, 126 locations, 40 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: 1.7s, OverallIterations: 7, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.8s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.1s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 479 SdHoareTripleChecker+Valid, 0.4s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 275 mSDsluCounter, 34 SdHoareTripleChecker+Invalid, 0.3s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 18 mSDsCounter, 72 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 480 IncrementalHoareTripleChecker+Invalid, 552 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 72 mSolverCounterUnsat, 16 mSDtfsCounter, 480 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 17 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=184occurred in iteration=1, InterpolantAutomatonStates: 22, 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, 0.4s InterpolantComputationTime, 67 NumberOfCodeBlocks, 67 NumberOfCodeBlocksAsserted, 7 NumberOfCheckSat, 45 ConstructedInterpolants, 0 QuantifiedInterpolants, 189 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 RESULT: Ultimate proved your program to be incorrect! [2024-02-02 09:11:27,759 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 Writing human readable error path to file UltimateCounterExample.errorpath Result: FALSE