./Ultimate.py --spec ../../../trunk/examples/svcomp/properties/unreach-call.prp --file ../../../trunk/examples/svcomp/weaver/chl-simpl-str-symm.wvr.c --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/chl-simpl-str-symm.wvr.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/weaver/chl-simpl-str-symm.wvr.c ./goblint.2023-12-19_14-39-08.files/SV-COMP24_unreach-call/chl-simpl-str-symm.wvr.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 09:19:46,635 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-02-02 09:19:46,704 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-02-02 09:19:46,708 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-02-02 09:19:46,709 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-02-02 09:19:46,736 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-02-02 09:19:46,738 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-02-02 09:19:46,738 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-02-02 09:19:46,738 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-02-02 09:19:46,741 INFO L153 SettingsManager]: * Use memory slicer=true [2024-02-02 09:19:46,742 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-02-02 09:19:46,742 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-02-02 09:19:46,743 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-02-02 09:19:46,744 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-02-02 09:19:46,744 INFO L153 SettingsManager]: * Use SBE=true [2024-02-02 09:19:46,744 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-02-02 09:19:46,744 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-02-02 09:19:46,745 INFO L153 SettingsManager]: * sizeof long=4 [2024-02-02 09:19:46,745 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-02-02 09:19:46,745 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-02-02 09:19:46,745 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-02-02 09:19:46,746 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-02-02 09:19:46,746 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-02-02 09:19:46,746 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-02-02 09:19:46,746 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-02-02 09:19:46,746 INFO L153 SettingsManager]: * sizeof long double=12 [2024-02-02 09:19:46,747 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-02-02 09:19:46,747 INFO L153 SettingsManager]: * Use constant arrays=true [2024-02-02 09:19:46,747 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-02-02 09:19:46,747 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-02-02 09:19:46,748 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-02-02 09:19:46,749 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-02-02 09:19:46,749 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-02-02 09:19:46,749 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-02-02 09:19:46,749 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-02-02 09:19:46,749 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-02-02 09:19:46,750 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-02-02 09:19:46,750 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-02-02 09:19:46,750 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-02-02 09:19:46,750 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-02-02 09:19:46,750 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2024-02-02 09:19:46,751 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-02-02 09:19:46,751 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-02-02 09:19:46,751 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessparser: Only consider loop invariants -> false [2024-02-02 09:19:46,987 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-02-02 09:19:47,010 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-02-02 09:19:47,012 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-02-02 09:19:47,013 INFO L270 PluginConnector]: Initializing CDTParser... [2024-02-02 09:19:47,013 INFO L274 PluginConnector]: CDTParser initialized [2024-02-02 09:19:47,014 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/weaver/chl-simpl-str-symm.wvr.c [2024-02-02 09:19:48,094 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-02-02 09:19:48,255 INFO L384 CDTParser]: Found 1 translation units. [2024-02-02 09:19:48,255 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/weaver/chl-simpl-str-symm.wvr.c [2024-02-02 09:19:48,265 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/205ac5559/544aab998f894b49b8dbbc4f941e5d0f/FLAG9706aaafb [2024-02-02 09:19:48,275 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/205ac5559/544aab998f894b49b8dbbc4f941e5d0f [2024-02-02 09:19:48,277 INFO L270 PluginConnector]: Initializing Witness Parser... [2024-02-02 09:19:48,278 INFO L274 PluginConnector]: Witness Parser initialized [2024-02-02 09:19:48,279 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/./goblint.2023-12-19_14-39-08.files/SV-COMP24_unreach-call/chl-simpl-str-symm.wvr.yml/witness.yml [2024-02-02 09:19:48,366 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-02-02 09:19:48,367 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2024-02-02 09:19:48,368 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-02-02 09:19:48,368 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-02-02 09:19:48,372 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-02-02 09:19:48,372 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.02 09:19:48" (1/2) ... [2024-02-02 09:19:48,373 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3f98bb4c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.02 09:19:48, skipping insertion in model container [2024-02-02 09:19:48,373 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.02 09:19:48" (1/2) ... [2024-02-02 09:19:48,375 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@1b0c8cda and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.02 09:19:48, skipping insertion in model container [2024-02-02 09:19:48,375 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 02.02 09:19:48" (2/2) ... [2024-02-02 09:19:48,376 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3f98bb4c and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 02.02 09:19:48, skipping insertion in model container [2024-02-02 09:19:48,376 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 02.02 09:19:48" (2/2) ... [2024-02-02 09:19:48,376 INFO L86 nessWitnessExtractor]: Extracting all invariants from correctness witness [2024-02-02 09:19:48,397 INFO L99 nessWitnessExtractor]: Found the following entries in the witness: [2024-02-02 09:19:48,398 INFO L101 nessWitnessExtractor]: Location invariant before [L58-L58] (((((length_0 == 0) && (to_int_1 == 0)) && (length_2 == 0)) && (to_int_3 == 0)) && (result_4 == 0)) && (result_5 == 0) [2024-02-02 09:19:48,398 INFO L101 nessWitnessExtractor]: Location invariant before [L59-L59] ((((to_int_1 == 0) && (length_2 == 0)) && (to_int_3 == 0)) && (result_4 == 0)) && (result_5 == 0) [2024-02-02 09:19:48,398 INFO L101 nessWitnessExtractor]: Location invariant before [L51-L51] (unsigned long )_argptr == 0UL [2024-02-02 09:19:48,399 INFO L101 nessWitnessExtractor]: Location invariant before [L64-L64] (result_4 == 0) && (result_5 == 0) [2024-02-02 09:19:48,399 INFO L101 nessWitnessExtractor]: Location invariant before [L78-L78] (1 <= b) && (b != 0) [2024-02-02 09:19:48,399 INFO L101 nessWitnessExtractor]: Location invariant before [L22-L25] ((to_int_3 == 0) && (result_4 == 0)) && (result_5 == 0) [2024-02-02 09:19:48,399 INFO L101 nessWitnessExtractor]: Location invariant before [L79-L79] (b <= -1) && (b != 0) [2024-02-02 09:19:48,399 INFO L101 nessWitnessExtractor]: Location invariant before [L60-L60] (((length_2 == 0) && (to_int_3 == 0)) && (result_4 == 0)) && (result_5 == 0) [2024-02-02 09:19:48,399 INFO L101 nessWitnessExtractor]: Location invariant before [L61-L61] ((to_int_3 == 0) && (result_4 == 0)) && (result_5 == 0) [2024-02-02 09:19:48,399 INFO L101 nessWitnessExtractor]: Location invariant before [L45-L45] (unsigned long )_argptr == 0UL [2024-02-02 09:19:48,416 INFO L177 MainTranslator]: Built tables and reachable declarations [2024-02-02 09:19:48,556 WARN L239 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/weaver/chl-simpl-str-symm.wvr.c[2329,2342] [2024-02-02 09:19:48,562 INFO L209 PostProcessor]: Analyzing one entry point: main [2024-02-02 09:19:48,571 INFO L202 MainTranslator]: Completed pre-run [2024-02-02 09:19:48,580 WARN L424 MainDispatcher]: Unable to annotate extern int pthread_create (pthread_t *__restrict __newthread, const pthread_attr_t *__restrict __attr, void *(*__start_routine) (void *), void *__restrict __arg) __attribute__ ((__nothrow__)) __attribute__ ((__nonnull__ (1, 3))); with a witness entry Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local [2024-02-02 09:19:48,617 WARN L239 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/weaver/chl-simpl-str-symm.wvr.c[2329,2342] Start Parsing Local Start Parsing Local [2024-02-02 09:19:48,620 INFO L209 PostProcessor]: Analyzing one entry point: main [2024-02-02 09:19:48,631 INFO L206 MainTranslator]: Completed translation [2024-02-02 09:19:48,631 INFO L201 PluginConnector]: Adding new model witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 02.02 09:19:48 WrapperNode [2024-02-02 09:19:48,631 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-02-02 09:19:48,632 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-02-02 09:19:48,632 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-02-02 09:19:48,632 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-02-02 09:19:48,637 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 02.02 09:19:48" (1/1) ... [2024-02-02 09:19:48,643 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 02.02 09:19:48" (1/1) ... [2024-02-02 09:19:48,662 INFO L138 Inliner]: procedures = 22, calls = 25, calls flagged for inlining = 9, calls inlined = 11, statements flattened = 138 [2024-02-02 09:19:48,665 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-02-02 09:19:48,665 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-02-02 09:19:48,666 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-02-02 09:19:48,666 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-02-02 09:19:48,673 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 02.02 09:19:48" (1/1) ... [2024-02-02 09:19:48,674 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 02.02 09:19:48" (1/1) ... [2024-02-02 09:19:48,677 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 02.02 09:19:48" (1/1) ... [2024-02-02 09:19:48,692 INFO L175 MemorySlicer]: Split 6 memory accesses to 3 slices as follows [2, 2, 2]. 33 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2, 0, 0]. The 2 writes are split as follows [0, 1, 1]. [2024-02-02 09:19:48,693 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 02.02 09:19:48" (1/1) ... [2024-02-02 09:19:48,693 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 02.02 09:19:48" (1/1) ... [2024-02-02 09:19:48,697 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 02.02 09:19:48" (1/1) ... [2024-02-02 09:19:48,699 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 02.02 09:19:48" (1/1) ... [2024-02-02 09:19:48,700 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 02.02 09:19:48" (1/1) ... [2024-02-02 09:19:48,701 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 02.02 09:19:48" (1/1) ... [2024-02-02 09:19:48,703 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-02-02 09:19:48,712 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-02-02 09:19:48,712 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-02-02 09:19:48,713 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-02-02 09:19:48,713 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 02.02 09:19:48" (1/1) ... [2024-02-02 09:19:48,718 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-02-02 09:19:48,723 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-02-02 09:19:48,735 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 09:19:48,753 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 09:19:48,776 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-02-02 09:19:48,776 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2024-02-02 09:19:48,777 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2024-02-02 09:19:48,777 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2024-02-02 09:19:48,777 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2024-02-02 09:19:48,777 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-02-02 09:19:48,777 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-02-02 09:19:48,777 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2024-02-02 09:19:48,778 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2024-02-02 09:19:48,779 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-02-02 09:19:48,779 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2024-02-02 09:19:48,779 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#2 [2024-02-02 09:19:48,779 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-02-02 09:19:48,779 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-02-02 09:19:48,779 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2024-02-02 09:19:48,779 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2024-02-02 09:19:48,779 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#2 [2024-02-02 09:19:48,780 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2024-02-02 09:19:48,781 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 09:19:48,864 INFO L244 CfgBuilder]: Building ICFG [2024-02-02 09:19:48,866 INFO L270 CfgBuilder]: Building CFG for each procedure with an implementation [2024-02-02 09:19:49,075 INFO L289 CfgBuilder]: Ommited future-live optimization because the input is a concurrent program. [2024-02-02 09:19:49,076 INFO L293 CfgBuilder]: Performing block encoding [2024-02-02 09:19:49,272 INFO L315 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-02-02 09:19:49,272 INFO L320 CfgBuilder]: Removed 0 assume(true) statements. [2024-02-02 09:19:49,273 INFO L201 PluginConnector]: Adding new model witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.02 09:19:49 BoogieIcfgContainer [2024-02-02 09:19:49,273 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-02-02 09:19:49,275 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-02-02 09:19:49,275 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-02-02 09:19:49,277 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-02-02 09:19:49,278 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 02.02 09:19:48" (1/4) ... [2024-02-02 09:19:49,278 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@b4470c7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.02 09:19:49, skipping insertion in model container [2024-02-02 09:19:49,278 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 02.02 09:19:48" (2/4) ... [2024-02-02 09:19:49,279 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@b4470c7 and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CORRECTNESS_WITNESS 02.02 09:19:49, skipping insertion in model container [2024-02-02 09:19:49,279 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 02.02 09:19:48" (3/4) ... [2024-02-02 09:19:49,279 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@b4470c7 and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CORRECTNESS_WITNESS 02.02 09:19:49, skipping insertion in model container [2024-02-02 09:19:49,279 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.02 09:19:49" (4/4) ... [2024-02-02 09:19:49,280 INFO L112 eAbstractionObserver]: Analyzing ICFG chl-simpl-str-symm.wvr.c [2024-02-02 09:19:49,294 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-02-02 09:19:49,294 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 12 error locations. [2024-02-02 09:19:49,294 INFO L518 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-02-02 09:19:49,346 INFO L144 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2024-02-02 09:19:49,381 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 52 places, 49 transitions, 112 flow [2024-02-02 09:19:49,415 INFO L124 PetriNetUnfolderBase]: 4/47 cut-off events. [2024-02-02 09:19:49,416 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2024-02-02 09:19:49,419 INFO L83 FinitePrefix]: Finished finitePrefix Result has 56 conditions, 47 events. 4/47 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 98 event pairs, 0 based on Foata normal form. 0/31 useless extension candidates. Maximal degree in co-relation 31. Up to 2 conditions per place. [2024-02-02 09:19:49,419 INFO L82 GeneralOperation]: Start removeDead. Operand has 52 places, 49 transitions, 112 flow [2024-02-02 09:19:49,423 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 49 places, 46 transitions, 104 flow [2024-02-02 09:19:49,432 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-02-02 09:19:49,439 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;@4a3e88e9, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-02-02 09:19:49,440 INFO L358 AbstractCegarLoop]: Starting to check reachability of 20 error locations. [2024-02-02 09:19:49,442 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-02-02 09:19:49,442 INFO L124 PetriNetUnfolderBase]: 0/1 cut-off events. [2024-02-02 09:19:49,442 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-02-02 09:19:49,442 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-02-02 09:19:49,443 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1] [2024-02-02 09:19:49,443 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [thread1Err0ASSERT_VIOLATIONWITNESS_INVARIANT, thread1Err2ASSERT_VIOLATIONWITNESS_INVARIANT, thread1Err1ASSERT_VIOLATIONWITNESS_INVARIANT (and 17 more)] === [2024-02-02 09:19:49,450 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-02 09:19:49,452 INFO L85 PathProgramCache]: Analyzing trace with hash 14367, now seen corresponding path program 1 times [2024-02-02 09:19:49,459 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-02 09:19:49,460 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1221213739] [2024-02-02 09:19:49,460 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-02 09:19:49,460 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-02 09:19:49,531 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-02 09:19:49,692 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 09:19:49,692 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-02 09:19:49,693 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1221213739] [2024-02-02 09:19:49,693 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1221213739] provided 1 perfect and 0 imperfect interpolant sequences [2024-02-02 09:19:49,694 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-02-02 09:19:49,694 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-02-02 09:19:49,697 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1613575228] [2024-02-02 09:19:49,699 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-02 09:19:49,705 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-02-02 09:19:49,711 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-02 09:19:49,734 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-02-02 09:19:49,734 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-02-02 09:19:49,746 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 49 [2024-02-02 09:19:49,748 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 49 places, 46 transitions, 104 flow. Second operand has 3 states, 3 states have (on average 13.666666666666666) internal successors, (41), 3 states have internal predecessors, (41), 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 09:19:49,748 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-02 09:19:49,748 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 49 [2024-02-02 09:19:49,749 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-02 09:19:49,913 INFO L124 PetriNetUnfolderBase]: 249/498 cut-off events. [2024-02-02 09:19:49,913 INFO L125 PetriNetUnfolderBase]: For 24/24 co-relation queries the response was YES. [2024-02-02 09:19:49,918 INFO L83 FinitePrefix]: Finished finitePrefix Result has 926 conditions, 498 events. 249/498 cut-off events. For 24/24 co-relation queries the response was YES. Maximal size of possible extension queue 54. Compared 2480 event pairs, 189 based on Foata normal form. 0/418 useless extension candidates. Maximal degree in co-relation 820. Up to 397 conditions per place. [2024-02-02 09:19:49,922 INFO L140 encePairwiseOnDemand]: 46/49 looper letters, 32 selfloop transitions, 2 changer transitions 0/45 dead transitions. [2024-02-02 09:19:49,922 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 50 places, 45 transitions, 170 flow [2024-02-02 09:19:49,924 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-02-02 09:19:49,927 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-02-02 09:19:49,933 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 74 transitions. [2024-02-02 09:19:49,935 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5034013605442177 [2024-02-02 09:19:49,937 INFO L175 Difference]: Start difference. First operand has 49 places, 46 transitions, 104 flow. Second operand 3 states and 74 transitions. [2024-02-02 09:19:49,938 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 50 places, 45 transitions, 170 flow [2024-02-02 09:19:49,941 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 46 places, 45 transitions, 162 flow, removed 0 selfloop flow, removed 4 redundant places. [2024-02-02 09:19:49,949 INFO L231 Difference]: Finished difference. Result has 46 places, 45 transitions, 98 flow [2024-02-02 09:19:49,951 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=49, PETRI_DIFFERENCE_MINUEND_FLOW=94, PETRI_DIFFERENCE_MINUEND_PLACES=44, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=45, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=43, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=98, PETRI_PLACES=46, PETRI_TRANSITIONS=45} [2024-02-02 09:19:49,955 INFO L281 CegarLoopForPetriNet]: 49 programPoint places, -3 predicate places. [2024-02-02 09:19:49,956 INFO L495 AbstractCegarLoop]: Abstraction has has 46 places, 45 transitions, 98 flow [2024-02-02 09:19:49,956 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 13.666666666666666) internal successors, (41), 3 states have internal predecessors, (41), 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 09:19:49,956 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-02-02 09:19:49,957 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2024-02-02 09:19:49,957 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-02-02 09:19:49,958 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [thread1Err0ASSERT_VIOLATIONWITNESS_INVARIANT, thread1Err2ASSERT_VIOLATIONWITNESS_INVARIANT, thread1Err1ASSERT_VIOLATIONWITNESS_INVARIANT (and 17 more)] === [2024-02-02 09:19:49,958 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-02 09:19:49,958 INFO L85 PathProgramCache]: Analyzing trace with hash 445787, now seen corresponding path program 1 times [2024-02-02 09:19:49,959 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-02 09:19:49,959 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2064429529] [2024-02-02 09:19:49,959 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-02 09:19:49,959 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-02 09:19:49,979 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-02 09:19:50,061 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 09:19:50,062 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-02 09:19:50,062 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2064429529] [2024-02-02 09:19:50,063 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2064429529] provided 1 perfect and 0 imperfect interpolant sequences [2024-02-02 09:19:50,063 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-02-02 09:19:50,063 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-02-02 09:19:50,063 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [779149481] [2024-02-02 09:19:50,064 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-02 09:19:50,065 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-02-02 09:19:50,065 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-02 09:19:50,065 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-02-02 09:19:50,065 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-02-02 09:19:50,070 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 49 [2024-02-02 09:19:50,071 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 46 places, 45 transitions, 98 flow. Second operand has 3 states, 3 states have (on average 16.0) internal successors, (48), 3 states have internal predecessors, (48), 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 09:19:50,071 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-02 09:19:50,071 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 49 [2024-02-02 09:19:50,071 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-02 09:19:50,183 INFO L124 PetriNetUnfolderBase]: 214/433 cut-off events. [2024-02-02 09:19:50,213 INFO L125 PetriNetUnfolderBase]: For 5/5 co-relation queries the response was YES. [2024-02-02 09:19:50,214 INFO L83 FinitePrefix]: Finished finitePrefix Result has 798 conditions, 433 events. 214/433 cut-off events. For 5/5 co-relation queries the response was YES. Maximal size of possible extension queue 53. Compared 2229 event pairs, 165 based on Foata normal form. 0/373 useless extension candidates. Maximal degree in co-relation 789. Up to 351 conditions per place. [2024-02-02 09:19:50,217 INFO L140 encePairwiseOnDemand]: 46/49 looper letters, 30 selfloop transitions, 2 changer transitions 0/44 dead transitions. [2024-02-02 09:19:50,217 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 47 places, 44 transitions, 160 flow [2024-02-02 09:19:50,218 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-02-02 09:19:50,219 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-02-02 09:19:50,222 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 78 transitions. [2024-02-02 09:19:50,222 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5306122448979592 [2024-02-02 09:19:50,223 INFO L175 Difference]: Start difference. First operand has 46 places, 45 transitions, 98 flow. Second operand 3 states and 78 transitions. [2024-02-02 09:19:50,226 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 47 places, 44 transitions, 160 flow [2024-02-02 09:19:50,226 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 45 places, 44 transitions, 156 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-02-02 09:19:50,227 INFO L231 Difference]: Finished difference. Result has 45 places, 44 transitions, 96 flow [2024-02-02 09:19:50,228 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=49, PETRI_DIFFERENCE_MINUEND_FLOW=92, PETRI_DIFFERENCE_MINUEND_PLACES=43, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=44, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=42, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=96, PETRI_PLACES=45, PETRI_TRANSITIONS=44} [2024-02-02 09:19:50,229 INFO L281 CegarLoopForPetriNet]: 49 programPoint places, -4 predicate places. [2024-02-02 09:19:50,229 INFO L495 AbstractCegarLoop]: Abstraction has has 45 places, 44 transitions, 96 flow [2024-02-02 09:19:50,229 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 16.0) internal successors, (48), 3 states have internal predecessors, (48), 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 09:19:50,229 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-02-02 09:19:50,229 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1] [2024-02-02 09:19:50,229 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-02-02 09:19:50,232 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [thread1Err0ASSERT_VIOLATIONWITNESS_INVARIANT, thread1Err2ASSERT_VIOLATIONWITNESS_INVARIANT, thread1Err1ASSERT_VIOLATIONWITNESS_INVARIANT (and 17 more)] === [2024-02-02 09:19:50,234 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-02 09:19:50,235 INFO L85 PathProgramCache]: Analyzing trace with hash 13819840, now seen corresponding path program 1 times [2024-02-02 09:19:50,235 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-02 09:19:50,235 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [676235535] [2024-02-02 09:19:50,235 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-02 09:19:50,235 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-02 09:19:50,247 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-02 09:19:50,306 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 09:19:50,307 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-02 09:19:50,307 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [676235535] [2024-02-02 09:19:50,307 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [676235535] provided 1 perfect and 0 imperfect interpolant sequences [2024-02-02 09:19:50,307 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-02-02 09:19:50,308 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-02-02 09:19:50,308 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [675966036] [2024-02-02 09:19:50,308 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-02 09:19:50,308 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-02-02 09:19:50,308 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-02 09:19:50,309 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-02-02 09:19:50,309 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-02-02 09:19:50,317 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 16 out of 49 [2024-02-02 09:19:50,317 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 45 places, 44 transitions, 96 flow. Second operand has 3 states, 3 states have (on average 17.333333333333332) internal successors, (52), 3 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-02 09:19:50,317 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-02 09:19:50,317 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 16 of 49 [2024-02-02 09:19:50,317 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-02 09:19:50,375 INFO L124 PetriNetUnfolderBase]: 214/432 cut-off events. [2024-02-02 09:19:50,376 INFO L125 PetriNetUnfolderBase]: For 5/5 co-relation queries the response was YES. [2024-02-02 09:19:50,377 INFO L83 FinitePrefix]: Finished finitePrefix Result has 796 conditions, 432 events. 214/432 cut-off events. For 5/5 co-relation queries the response was YES. Maximal size of possible extension queue 53. Compared 2236 event pairs, 165 based on Foata normal form. 0/373 useless extension candidates. Maximal degree in co-relation 785. Up to 349 conditions per place. [2024-02-02 09:19:50,378 INFO L140 encePairwiseOnDemand]: 46/49 looper letters, 29 selfloop transitions, 2 changer transitions 0/43 dead transitions. [2024-02-02 09:19:50,378 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 46 places, 43 transitions, 156 flow [2024-02-02 09:19:50,379 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-02-02 09:19:50,379 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-02-02 09:19:50,379 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 80 transitions. [2024-02-02 09:19:50,379 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.54421768707483 [2024-02-02 09:19:50,380 INFO L175 Difference]: Start difference. First operand has 45 places, 44 transitions, 96 flow. Second operand 3 states and 80 transitions. [2024-02-02 09:19:50,380 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 46 places, 43 transitions, 156 flow [2024-02-02 09:19:50,380 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 44 places, 43 transitions, 152 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-02-02 09:19:50,381 INFO L231 Difference]: Finished difference. Result has 44 places, 43 transitions, 94 flow [2024-02-02 09:19:50,381 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=49, PETRI_DIFFERENCE_MINUEND_FLOW=90, PETRI_DIFFERENCE_MINUEND_PLACES=42, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=43, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=41, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=94, PETRI_PLACES=44, PETRI_TRANSITIONS=43} [2024-02-02 09:19:50,382 INFO L281 CegarLoopForPetriNet]: 49 programPoint places, -5 predicate places. [2024-02-02 09:19:50,382 INFO L495 AbstractCegarLoop]: Abstraction has has 44 places, 43 transitions, 94 flow [2024-02-02 09:19:50,382 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 17.333333333333332) internal successors, (52), 3 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-02 09:19:50,382 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-02-02 09:19:50,382 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2024-02-02 09:19:50,382 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-02-02 09:19:50,382 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONWITNESS_INVARIANT === [thread1Err0ASSERT_VIOLATIONWITNESS_INVARIANT, thread1Err2ASSERT_VIOLATIONWITNESS_INVARIANT, thread1Err1ASSERT_VIOLATIONWITNESS_INVARIANT (and 17 more)] === [2024-02-02 09:19:50,383 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-02 09:19:50,383 INFO L85 PathProgramCache]: Analyzing trace with hash 428415452, now seen corresponding path program 1 times [2024-02-02 09:19:50,383 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-02 09:19:50,383 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [225774456] [2024-02-02 09:19:50,383 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-02 09:19:50,383 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-02 09:19:50,389 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-02 09:19:50,410 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 09:19:50,410 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-02 09:19:50,410 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [225774456] [2024-02-02 09:19:50,410 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [225774456] provided 1 perfect and 0 imperfect interpolant sequences [2024-02-02 09:19:50,410 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-02-02 09:19:50,411 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-02-02 09:19:50,411 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [835625682] [2024-02-02 09:19:50,411 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-02 09:19:50,411 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-02-02 09:19:50,411 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-02 09:19:50,412 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-02-02 09:19:50,412 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-02-02 09:19:50,418 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 18 out of 49 [2024-02-02 09:19:50,418 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 44 places, 43 transitions, 94 flow. Second operand has 3 states, 3 states have (on average 19.666666666666668) internal successors, (59), 3 states have internal predecessors, (59), 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 09:19:50,418 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-02 09:19:50,418 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 18 of 49 [2024-02-02 09:19:50,418 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-02 09:19:50,467 INFO L124 PetriNetUnfolderBase]: 181/380 cut-off events. [2024-02-02 09:19:50,467 INFO L125 PetriNetUnfolderBase]: For 3/3 co-relation queries the response was YES. [2024-02-02 09:19:50,468 INFO L83 FinitePrefix]: Finished finitePrefix Result has 704 conditions, 380 events. 181/380 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 54. Compared 2048 event pairs, 144 based on Foata normal form. 0/332 useless extension candidates. Maximal degree in co-relation 691. Up to 308 conditions per place. [2024-02-02 09:19:50,469 INFO L140 encePairwiseOnDemand]: 46/49 looper letters, 27 selfloop transitions, 2 changer transitions 0/42 dead transitions. [2024-02-02 09:19:50,469 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 45 places, 42 transitions, 150 flow [2024-02-02 09:19:50,469 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-02-02 09:19:50,469 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-02-02 09:19:50,470 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 84 transitions. [2024-02-02 09:19:50,470 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5714285714285714 [2024-02-02 09:19:50,470 INFO L175 Difference]: Start difference. First operand has 44 places, 43 transitions, 94 flow. Second operand 3 states and 84 transitions. [2024-02-02 09:19:50,470 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 45 places, 42 transitions, 150 flow [2024-02-02 09:19:50,471 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 43 places, 42 transitions, 146 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-02-02 09:19:50,471 INFO L231 Difference]: Finished difference. Result has 43 places, 42 transitions, 92 flow [2024-02-02 09:19:50,471 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=49, PETRI_DIFFERENCE_MINUEND_FLOW=88, PETRI_DIFFERENCE_MINUEND_PLACES=41, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=42, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=40, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=92, PETRI_PLACES=43, PETRI_TRANSITIONS=42} [2024-02-02 09:19:50,472 INFO L281 CegarLoopForPetriNet]: 49 programPoint places, -6 predicate places. [2024-02-02 09:19:50,472 INFO L495 AbstractCegarLoop]: Abstraction has has 43 places, 42 transitions, 92 flow [2024-02-02 09:19:50,472 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 19.666666666666668) internal successors, (59), 3 states have internal predecessors, (59), 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 09:19:50,473 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-02-02 09:19:50,473 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1] [2024-02-02 09:19:50,473 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-02-02 09:19:50,473 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONWITNESS_INVARIANT === [thread1Err0ASSERT_VIOLATIONWITNESS_INVARIANT, thread1Err2ASSERT_VIOLATIONWITNESS_INVARIANT, thread1Err1ASSERT_VIOLATIONWITNESS_INVARIANT (and 17 more)] === [2024-02-02 09:19:50,473 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-02 09:19:50,473 INFO L85 PathProgramCache]: Analyzing trace with hash 395977556, now seen corresponding path program 1 times [2024-02-02 09:19:50,473 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-02 09:19:50,474 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [968353533] [2024-02-02 09:19:50,474 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-02 09:19:50,474 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-02 09:19:50,479 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-02 09:19:50,494 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 09:19:50,494 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-02 09:19:50,495 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [968353533] [2024-02-02 09:19:50,495 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [968353533] provided 1 perfect and 0 imperfect interpolant sequences [2024-02-02 09:19:50,495 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-02-02 09:19:50,495 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-02-02 09:19:50,495 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1566326922] [2024-02-02 09:19:50,495 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-02 09:19:50,496 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-02-02 09:19:50,496 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-02 09:19:50,496 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-02-02 09:19:50,496 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-02-02 09:19:50,501 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 19 out of 49 [2024-02-02 09:19:50,502 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 43 places, 42 transitions, 92 flow. Second operand has 3 states, 3 states have (on average 21.0) internal successors, (63), 3 states have internal predecessors, (63), 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 09:19:50,502 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-02 09:19:50,502 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 19 of 49 [2024-02-02 09:19:50,502 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-02 09:19:50,569 INFO L124 PetriNetUnfolderBase]: 181/378 cut-off events. [2024-02-02 09:19:50,570 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2024-02-02 09:19:50,570 INFO L83 FinitePrefix]: Finished finitePrefix Result has 701 conditions, 378 events. 181/378 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 54. Compared 2054 event pairs, 72 based on Foata normal form. 0/332 useless extension candidates. Maximal degree in co-relation 686. Up to 159 conditions per place. [2024-02-02 09:19:50,571 INFO L140 encePairwiseOnDemand]: 45/49 looper letters, 40 selfloop transitions, 3 changer transitions 0/56 dead transitions. [2024-02-02 09:19:50,572 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 44 places, 56 transitions, 207 flow [2024-02-02 09:19:50,572 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-02-02 09:19:50,572 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-02-02 09:19:50,572 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 101 transitions. [2024-02-02 09:19:50,573 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6870748299319728 [2024-02-02 09:19:50,573 INFO L175 Difference]: Start difference. First operand has 43 places, 42 transitions, 92 flow. Second operand 3 states and 101 transitions. [2024-02-02 09:19:50,573 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 44 places, 56 transitions, 207 flow [2024-02-02 09:19:50,573 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 42 places, 56 transitions, 203 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-02-02 09:19:50,574 INFO L231 Difference]: Finished difference. Result has 43 places, 43 transitions, 103 flow [2024-02-02 09:19:50,574 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=49, PETRI_DIFFERENCE_MINUEND_FLOW=86, PETRI_DIFFERENCE_MINUEND_PLACES=40, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=41, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=38, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=103, PETRI_PLACES=43, PETRI_TRANSITIONS=43} [2024-02-02 09:19:50,575 INFO L281 CegarLoopForPetriNet]: 49 programPoint places, -6 predicate places. [2024-02-02 09:19:50,575 INFO L495 AbstractCegarLoop]: Abstraction has has 43 places, 43 transitions, 103 flow [2024-02-02 09:19:50,575 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 21.0) internal successors, (63), 3 states have internal predecessors, (63), 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 09:19:50,575 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-02-02 09:19:50,575 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-02-02 09:19:50,576 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-02-02 09:19:50,576 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting thread1Err0ASSERT_VIOLATIONWITNESS_INVARIANT === [thread1Err0ASSERT_VIOLATIONWITNESS_INVARIANT, thread1Err2ASSERT_VIOLATIONWITNESS_INVARIANT, thread1Err1ASSERT_VIOLATIONWITNESS_INVARIANT (and 17 more)] === [2024-02-02 09:19:50,576 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-02 09:19:50,576 INFO L85 PathProgramCache]: Analyzing trace with hash -49909932, now seen corresponding path program 1 times [2024-02-02 09:19:50,576 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-02 09:19:50,576 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1380835570] [2024-02-02 09:19:50,577 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-02 09:19:50,577 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-02 09:19:50,587 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-02-02 09:19:50,587 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-02-02 09:19:50,592 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-02-02 09:19:50,606 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2024-02-02 09:19:50,606 INFO L360 BasicCegarLoop]: Counterexample is feasible [2024-02-02 09:19:50,607 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location thread1Err0ASSERT_VIOLATIONWITNESS_INVARIANT (19 of 20 remaining) [2024-02-02 09:19:50,608 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thread1Err0ASSERT_VIOLATIONWITNESS_INVARIANT (18 of 20 remaining) [2024-02-02 09:19:50,609 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thread1Err2ASSERT_VIOLATIONWITNESS_INVARIANT (17 of 20 remaining) [2024-02-02 09:19:50,609 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thread1Err1ASSERT_VIOLATIONWITNESS_INVARIANT (16 of 20 remaining) [2024-02-02 09:19:50,609 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thread2Err0ASSERT_VIOLATIONWITNESS_INVARIANT (15 of 20 remaining) [2024-02-02 09:19:50,609 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thread2Err2ASSERT_VIOLATIONWITNESS_INVARIANT (14 of 20 remaining) [2024-02-02 09:19:50,609 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thread2Err1ASSERT_VIOLATIONWITNESS_INVARIANT (13 of 20 remaining) [2024-02-02 09:19:50,609 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT (12 of 20 remaining) [2024-02-02 09:19:50,610 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (11 of 20 remaining) [2024-02-02 09:19:50,610 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (10 of 20 remaining) [2024-02-02 09:19:50,610 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr3ASSERT_VIOLATIONWITNESS_INVARIANT (9 of 20 remaining) [2024-02-02 09:19:50,610 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr4ASSERT_VIOLATIONWITNESS_INVARIANT (8 of 20 remaining) [2024-02-02 09:19:50,610 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION (7 of 20 remaining) [2024-02-02 09:19:50,610 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (6 of 20 remaining) [2024-02-02 09:19:50,611 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (5 of 20 remaining) [2024-02-02 09:19:50,611 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thread1Err2ASSERT_VIOLATIONWITNESS_INVARIANT (4 of 20 remaining) [2024-02-02 09:19:50,611 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thread1Err1ASSERT_VIOLATIONWITNESS_INVARIANT (3 of 20 remaining) [2024-02-02 09:19:50,611 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thread2Err0ASSERT_VIOLATIONWITNESS_INVARIANT (2 of 20 remaining) [2024-02-02 09:19:50,611 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thread2Err2ASSERT_VIOLATIONWITNESS_INVARIANT (1 of 20 remaining) [2024-02-02 09:19:50,611 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thread2Err1ASSERT_VIOLATIONWITNESS_INVARIANT (0 of 20 remaining) [2024-02-02 09:19:50,611 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-02-02 09:19:50,612 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1] [2024-02-02 09:19:50,616 INFO L229 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2024-02-02 09:19:50,616 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2024-02-02 09:19:50,633 INFO L503 ceAbstractionStarter]: Automizer considered 11 witness invariants [2024-02-02 09:19:50,633 INFO L504 ceAbstractionStarter]: WitnessConsidered=11 [2024-02-02 09:19:50,634 INFO L201 PluginConnector]: Adding new model witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 02.02 09:19:50 BasicIcfg [2024-02-02 09:19:50,634 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2024-02-02 09:19:50,634 INFO L158 Benchmark]: Toolchain (without parser) took 2267.29ms. Allocated memory was 140.5MB in the beginning and 174.1MB in the end (delta: 33.6MB). Free memory was 81.9MB in the beginning and 127.1MB in the end (delta: -45.1MB). There was no memory consumed. Max. memory is 16.1GB. [2024-02-02 09:19:50,635 INFO L158 Benchmark]: CDTParser took 0.16ms. Allocated memory is still 140.5MB. Free memory is still 106.3MB. There was no memory consumed. Max. memory is 16.1GB. [2024-02-02 09:19:50,635 INFO L158 Benchmark]: Witness Parser took 0.16ms. Allocated memory is still 140.5MB. Free memory is still 84.9MB. There was no memory consumed. Max. memory is 16.1GB. [2024-02-02 09:19:50,635 INFO L158 Benchmark]: CACSL2BoogieTranslator took 263.57ms. Allocated memory is still 140.5MB. Free memory was 81.5MB in the beginning and 67.3MB in the end (delta: 14.2MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. [2024-02-02 09:19:50,635 INFO L158 Benchmark]: Boogie Procedure Inliner took 32.76ms. Allocated memory is still 140.5MB. Free memory was 67.3MB in the beginning and 65.2MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2024-02-02 09:19:50,636 INFO L158 Benchmark]: Boogie Preprocessor took 37.49ms. Allocated memory is still 140.5MB. Free memory was 65.2MB in the beginning and 63.1MB in the end (delta: 2.0MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2024-02-02 09:19:50,636 INFO L158 Benchmark]: RCFGBuilder took 560.59ms. Allocated memory was 140.5MB in the beginning and 174.1MB in the end (delta: 33.6MB). Free memory was 63.0MB in the beginning and 131.2MB in the end (delta: -68.1MB). Peak memory consumption was 39.7MB. Max. memory is 16.1GB. [2024-02-02 09:19:50,636 INFO L158 Benchmark]: TraceAbstraction took 1359.15ms. Allocated memory is still 174.1MB. Free memory was 131.2MB in the beginning and 127.1MB in the end (delta: 4.1MB). Peak memory consumption was 4.3MB. Max. memory is 16.1GB. [2024-02-02 09:19:50,638 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.16ms. Allocated memory is still 140.5MB. Free memory is still 106.3MB. There was no memory consumed. Max. memory is 16.1GB. * Witness Parser took 0.16ms. Allocated memory is still 140.5MB. Free memory is still 84.9MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 263.57ms. Allocated memory is still 140.5MB. Free memory was 81.5MB in the beginning and 67.3MB in the end (delta: 14.2MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 32.76ms. Allocated memory is still 140.5MB. Free memory was 67.3MB in the beginning and 65.2MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 37.49ms. Allocated memory is still 140.5MB. Free memory was 65.2MB in the beginning and 63.1MB in the end (delta: 2.0MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 560.59ms. Allocated memory was 140.5MB in the beginning and 174.1MB in the end (delta: 33.6MB). Free memory was 63.0MB in the beginning and 131.2MB in the end (delta: -68.1MB). Peak memory consumption was 39.7MB. Max. memory is 16.1GB. * TraceAbstraction took 1359.15ms. Allocated memory is still 174.1MB. Free memory was 131.2MB in the beginning and 127.1MB in the end (delta: 4.1MB). Peak memory consumption was 4.3MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 78]: invariant of correctness witness can be violated invariant of correctness witness can be violated We found a FailurePath: [L38] 0 int length_0, to_int_1, length_2, to_int_3, result_4, result_5; [L55] 0 pthread_t t1, t2; VAL [length_0=0, length_2=0, result_4=0, result_5=0, t1={3:0}, t2={5:0}, to_int_1=0, to_int_3=0] [L58] 0 CodeAnnotStmt[Assertion[BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[COMPEQ,IdentifierExpression[length_0],IntegerLiteral[0]],BinaryExpression[COMPEQ,IdentifierExpression[to_int_1],IntegerLiteral[0]]],BinaryExpression[COMPEQ,IdentifierExpression[length_2],IntegerLiteral[0]]],BinaryExpression[COMPEQ,IdentifierExpression[to_int_3],IntegerLiteral[0]]],BinaryExpression[COMPEQ,IdentifierExpression[result_4],IntegerLiteral[0]]],BinaryExpression[COMPEQ,IdentifierExpression[result_5],IntegerLiteral[0]]]]] [L58] 0 length_0 = __VERIFIER_nondet_int() [L59] 0 CodeAnnotStmt[Assertion[BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[COMPEQ,IdentifierExpression[to_int_1],IntegerLiteral[0]],BinaryExpression[COMPEQ,IdentifierExpression[length_2],IntegerLiteral[0]]],BinaryExpression[COMPEQ,IdentifierExpression[to_int_3],IntegerLiteral[0]]],BinaryExpression[COMPEQ,IdentifierExpression[result_4],IntegerLiteral[0]]],BinaryExpression[COMPEQ,IdentifierExpression[result_5],IntegerLiteral[0]]]]] [L59] 0 to_int_1 = __VERIFIER_nondet_int() [L60] 0 CodeAnnotStmt[Assertion[BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[COMPEQ,IdentifierExpression[length_2],IntegerLiteral[0]],BinaryExpression[COMPEQ,IdentifierExpression[to_int_3],IntegerLiteral[0]]],BinaryExpression[COMPEQ,IdentifierExpression[result_4],IntegerLiteral[0]]],BinaryExpression[COMPEQ,IdentifierExpression[result_5],IntegerLiteral[0]]]]] [L60] 0 length_2 = __VERIFIER_nondet_int() [L61] 0 CodeAnnotStmt[Assertion[BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[COMPEQ,IdentifierExpression[to_int_3],IntegerLiteral[0]],BinaryExpression[COMPEQ,IdentifierExpression[result_4],IntegerLiteral[0]]],BinaryExpression[COMPEQ,IdentifierExpression[result_5],IntegerLiteral[0]]]]] [L61] 0 to_int_3 = __VERIFIER_nondet_int() [L64] 0 CodeAnnotStmt[Assertion[BinaryExpression[LOGICAND,BinaryExpression[COMPEQ,IdentifierExpression[result_4],IntegerLiteral[0]],BinaryExpression[COMPEQ,IdentifierExpression[result_5],IntegerLiteral[0]]]]] [L64] FCALL, FORK 0 pthread_create(&t1, 0, thread1, 0) VAL [length_0=1, length_2=1, result_4=0, result_5=0, t1={3:0}, t2={5:0}, to_int_1=0, to_int_3=0] [L43] 1 length_0 == 0 ? (length_2 == 0 ? 0 : 1) : (length_2 == 0 ? -1 : minus(to_int_1, to_int_3)) VAL [_argptr={0:0}, _argptr={0:0}, length_0=1, length_2=1, result_4=0, result_5=0, to_int_1=0, to_int_3=0] [L43] 1 length_2 == 0 ? -1 : minus(to_int_1, to_int_3) [L43] CALL 1 minus(to_int_1, to_int_3) [L78] 1 CodeAnnotStmt[Assertion[BinaryExpression[LOGICAND,BinaryExpression[COMPLEQ,IntegerLiteral[1],IdentifierExpression[b]],BinaryExpression[COMPNEQ,IdentifierExpression[b],IntegerLiteral[0]]]]] VAL [\old(a)=0, \old(b)=0, a=0, b=0, length_0=1, length_2=1, result_4=0, result_5=0, to_int_1=0, to_int_3=0] - UnprovableResult [Line: 45]: Unable to prove that invariant of correctness witness holds Unable to prove that invariant of correctness witness holds Reason: Not analyzed. - UnprovableResult [Line: 79]: Unable to prove that invariant of correctness witness holds Unable to prove that invariant of correctness witness holds Reason: Not analyzed. - UnprovableResult [Line: 78]: Unable to prove that invariant of correctness witness holds Unable to prove that invariant of correctness witness holds Reason: Not analyzed. - UnprovableResult [Line: 51]: Unable to prove that invariant of correctness witness holds Unable to prove that invariant of correctness witness holds Reason: Not analyzed. - UnprovableResult [Line: 79]: Unable to prove that invariant of correctness witness holds Unable to prove that invariant of correctness witness holds Reason: Not analyzed. - UnprovableResult [Line: 58]: Unable to prove that invariant of correctness witness holds Unable to prove that invariant of correctness witness holds Reason: Not analyzed. - UnprovableResult [Line: 59]: Unable to prove that invariant of correctness witness holds Unable to prove that invariant of correctness witness holds Reason: Not analyzed. - UnprovableResult [Line: 60]: Unable to prove that invariant of correctness witness holds Unable to prove that invariant of correctness witness holds Reason: Not analyzed. - UnprovableResult [Line: 61]: Unable to prove that invariant of correctness witness holds Unable to prove that invariant of correctness witness holds Reason: Not analyzed. - UnprovableResult [Line: 64]: Unable to prove that invariant of correctness witness holds Unable to prove that invariant of correctness witness holds Reason: Not analyzed. - UnprovableResult [Line: 72]: 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: 65]: 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: 64]: 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, 72 locations, 20 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: 1.2s, OverallIterations: 6, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.6s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.1s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 66 SdHoareTripleChecker+Valid, 0.2s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 39 mSDsluCounter, 15 SdHoareTripleChecker+Invalid, 0.2s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 0 mSDsCounter, 14 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 299 IncrementalHoareTripleChecker+Invalid, 313 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 14 mSolverCounterUnsat, 15 mSDtfsCounter, 299 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 5 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=104occurred in iteration=0, InterpolantAutomatonStates: 15, 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, 0.0s SatisfiabilityAnalysisTime, 0.3s InterpolantComputationTime, 31 NumberOfCodeBlocks, 31 NumberOfCodeBlocksAsserted, 6 NumberOfCheckSat, 15 ConstructedInterpolants, 0 QuantifiedInterpolants, 165 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 5 InterpolantComputations, 5 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 09:19:50,665 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Ended with exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Writing human readable error path to file UltimateCounterExample.errorpath Result: FALSE