./Ultimate.py --spec ../../../trunk/examples/svcomp/properties/unreach-call.prp --file ../../../trunk/examples/svcomp/goblint-regression/13-privatized_47-refine-protected2_true.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/13-privatized_47-refine-protected2_true.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/goblint-regression/13-privatized_47-refine-protected2_true.i ./goblint.2023-12-19_14-39-08.files/SV-COMP24_unreach-call/13-privatized_47-refine-protected2_true.yml/witness.yml -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --traceabstraction.compute.hoare.annotation.of.negated.interpolant.automaton,.abstraction.and.cfg false --witnessparser.only.consider.loop.invariants false --- Real Ultimate output --- This is Ultimate 0.2.4-dev-59af5db-m [2024-02-02 09:17:56,735 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-02-02 09:17:56,798 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-02-02 09:17:56,805 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-02-02 09:17:56,806 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-02-02 09:17:56,836 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-02-02 09:17:56,837 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-02-02 09:17:56,837 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-02-02 09:17:56,838 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-02-02 09:17:56,839 INFO L153 SettingsManager]: * Use memory slicer=true [2024-02-02 09:17:56,839 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-02-02 09:17:56,839 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-02-02 09:17:56,840 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-02-02 09:17:56,840 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-02-02 09:17:56,841 INFO L153 SettingsManager]: * Use SBE=true [2024-02-02 09:17:56,841 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-02-02 09:17:56,844 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-02-02 09:17:56,845 INFO L153 SettingsManager]: * sizeof long=4 [2024-02-02 09:17:56,845 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-02-02 09:17:56,845 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-02-02 09:17:56,846 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-02-02 09:17:56,846 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-02-02 09:17:56,846 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-02-02 09:17:56,846 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-02-02 09:17:56,847 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-02-02 09:17:56,847 INFO L153 SettingsManager]: * sizeof long double=12 [2024-02-02 09:17:56,847 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-02-02 09:17:56,847 INFO L153 SettingsManager]: * Use constant arrays=true [2024-02-02 09:17:56,848 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-02-02 09:17:56,848 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-02-02 09:17:56,849 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-02-02 09:17:56,849 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-02-02 09:17:56,850 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-02-02 09:17:56,850 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-02-02 09:17:56,850 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-02-02 09:17:56,850 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-02-02 09:17:56,851 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-02-02 09:17:56,851 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-02-02 09:17:56,851 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-02-02 09:17:56,851 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-02-02 09:17:56,851 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2024-02-02 09:17:56,852 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-02-02 09:17:56,852 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-02-02 09:17:56,852 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessparser: Only consider loop invariants -> false [2024-02-02 09:17:57,105 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-02-02 09:17:57,125 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-02-02 09:17:57,127 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-02-02 09:17:57,128 INFO L270 PluginConnector]: Initializing CDTParser... [2024-02-02 09:17:57,128 INFO L274 PluginConnector]: CDTParser initialized [2024-02-02 09:17:57,130 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/goblint-regression/13-privatized_47-refine-protected2_true.i [2024-02-02 09:17:58,317 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-02-02 09:17:58,582 INFO L384 CDTParser]: Found 1 translation units. [2024-02-02 09:17:58,599 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/goblint-regression/13-privatized_47-refine-protected2_true.i [2024-02-02 09:17:58,617 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d98642fcf/414b138a742240d0af5da74232fb8381/FLAG424b54c09 [2024-02-02 09:17:58,633 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d98642fcf/414b138a742240d0af5da74232fb8381 [2024-02-02 09:17:58,637 INFO L270 PluginConnector]: Initializing Witness Parser... [2024-02-02 09:17:58,638 INFO L274 PluginConnector]: Witness Parser initialized [2024-02-02 09:17:58,639 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/./goblint.2023-12-19_14-39-08.files/SV-COMP24_unreach-call/13-privatized_47-refine-protected2_true.yml/witness.yml [2024-02-02 09:17:58,734 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-02-02 09:17:58,735 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2024-02-02 09:17:58,736 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-02-02 09:17:58,737 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-02-02 09:17:58,741 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-02-02 09:17:58,742 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.02 09:17:58" (1/2) ... [2024-02-02 09:17:58,743 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@43e5759c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.02 09:17:58, skipping insertion in model container [2024-02-02 09:17:58,743 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.02 09:17:58" (1/2) ... [2024-02-02 09:17:58,745 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@7c228b47 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.02 09:17:58, skipping insertion in model container [2024-02-02 09:17:58,745 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 02.02 09:17:58" (2/2) ... [2024-02-02 09:17:58,745 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@43e5759c and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 02.02 09:17:58, skipping insertion in model container [2024-02-02 09:17:58,746 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 02.02 09:17:58" (2/2) ... [2024-02-02 09:17:58,746 INFO L86 nessWitnessExtractor]: Extracting all invariants from correctness witness [2024-02-02 09:17:58,784 INFO L99 nessWitnessExtractor]: Found the following entries in the witness: [2024-02-02 09:17:58,786 INFO L101 nessWitnessExtractor]: Location invariant before [L694-L694] g == 1 [2024-02-02 09:17:58,786 INFO L101 nessWitnessExtractor]: Location invariant after [L693-L696] g == 0 [2024-02-02 09:17:58,786 INFO L101 nessWitnessExtractor]: Location invariant before [L693-L696] ((0 <= g) && (g <= 1)) && (g == 0 || g == 1) [2024-02-02 09:17:58,786 INFO L101 nessWitnessExtractor]: Location invariant before [L691-L691] g == 0 [2024-02-02 09:17:58,787 INFO L101 nessWitnessExtractor]: Location invariant before [L685-L685] (((0 <= g) && (g <= 1)) && ((unsigned long )arg == 0UL)) && (g == 0 || g == 1) [2024-02-02 09:17:58,788 INFO L101 nessWitnessExtractor]: Location invariant before [L687-L687] (unsigned long )arg == 0UL [2024-02-02 09:17:58,788 INFO L101 nessWitnessExtractor]: Location invariant before [L686-L686] (g == 1) && ((unsigned long )arg == 0UL) [2024-02-02 09:17:58,788 INFO L101 nessWitnessExtractor]: Location invariant before [L697-L697] ((0 <= g) && (g <= 1)) && (g == 0 || g == 1) [2024-02-02 09:17:58,788 INFO L101 nessWitnessExtractor]: Location invariant before [L684-L684] (unsigned long )arg == 0UL [2024-02-02 09:17:58,788 INFO L101 nessWitnessExtractor]: Location invariant before [L19-L19] (((((0 <= g) && (g <= 1)) && (g == 0 || g == 1)) && (0 <= g)) && (g <= 1)) && (g == 0 || g == 1) [2024-02-02 09:17:58,835 INFO L177 MainTranslator]: Built tables and reachable declarations [2024-02-02 09:17:59,024 WARN L239 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/goblint-regression/13-privatized_47-refine-protected2_true.i[1094,1107] [2024-02-02 09:17:59,164 INFO L209 PostProcessor]: Analyzing one entry point: main [2024-02-02 09:17:59,175 INFO L202 MainTranslator]: Completed pre-run [2024-02-02 09:17:59,189 WARN L239 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/goblint-regression/13-privatized_47-refine-protected2_true.i[1094,1107] [2024-02-02 09:17:59,190 WARN L424 MainDispatcher]: Unable to annotate void __VERIFIER_assert(int cond) { if(!(cond)) { ERROR: {reach_error();abort();} } } 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 Start Parsing Local Start Parsing Local [2024-02-02 09:17:59,244 INFO L209 PostProcessor]: Analyzing one entry point: main [2024-02-02 09:17:59,276 INFO L206 MainTranslator]: Completed translation [2024-02-02 09:17:59,277 INFO L201 PluginConnector]: Adding new model witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 02.02 09:17:59 WrapperNode [2024-02-02 09:17:59,277 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-02-02 09:17:59,278 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-02-02 09:17:59,278 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-02-02 09:17:59,279 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-02-02 09:17:59,285 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 09:17:59" (1/1) ... [2024-02-02 09:17:59,320 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 09:17:59" (1/1) ... [2024-02-02 09:17:59,337 INFO L138 Inliner]: procedures = 163, calls = 23, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 53 [2024-02-02 09:17:59,337 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-02-02 09:17:59,338 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-02-02 09:17:59,338 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-02-02 09:17:59,338 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-02-02 09:17:59,345 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 09:17:59" (1/1) ... [2024-02-02 09:17:59,346 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 09:17:59" (1/1) ... [2024-02-02 09:17:59,348 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 09:17:59" (1/1) ... [2024-02-02 09:17:59,360 INFO L175 MemorySlicer]: Split 8 memory accesses to 3 slices as follows [2, 5, 1]. 63 percent of accesses are in the largest equivalence class. The 7 initializations are split as follows [2, 5, 0]. The 1 writes are split as follows [0, 0, 1]. [2024-02-02 09:17:59,361 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 09:17:59" (1/1) ... [2024-02-02 09:17:59,361 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 09:17:59" (1/1) ... [2024-02-02 09:17:59,366 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 09:17:59" (1/1) ... [2024-02-02 09:17:59,368 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 09:17:59" (1/1) ... [2024-02-02 09:17:59,369 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 09:17:59" (1/1) ... [2024-02-02 09:17:59,370 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 09:17:59" (1/1) ... [2024-02-02 09:17:59,372 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-02-02 09:17:59,373 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-02-02 09:17:59,373 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-02-02 09:17:59,373 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-02-02 09:17:59,374 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 09:17:59" (1/1) ... [2024-02-02 09:17:59,381 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-02-02 09:17:59,388 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-02-02 09:17:59,401 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 09:17:59,404 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 09:17:59,428 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-02-02 09:17:59,428 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2024-02-02 09:17:59,428 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#2 [2024-02-02 09:17:59,429 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2024-02-02 09:17:59,429 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-02-02 09:17:59,429 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2024-02-02 09:17:59,429 INFO L130 BoogieDeclarations]: Found specification of procedure t_fun [2024-02-02 09:17:59,429 INFO L138 BoogieDeclarations]: Found implementation of procedure t_fun [2024-02-02 09:17:59,430 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2024-02-02 09:17:59,430 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-02-02 09:17:59,430 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-02-02 09:17:59,430 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2024-02-02 09:17:59,430 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexUnlock [2024-02-02 09:17:59,430 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-02-02 09:17:59,430 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-02-02 09:17:59,431 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 09:17:59,536 INFO L244 CfgBuilder]: Building ICFG [2024-02-02 09:17:59,538 INFO L270 CfgBuilder]: Building CFG for each procedure with an implementation [2024-02-02 09:17:59,683 INFO L289 CfgBuilder]: Ommited future-live optimization because the input is a concurrent program. [2024-02-02 09:17:59,683 INFO L293 CfgBuilder]: Performing block encoding [2024-02-02 09:17:59,767 INFO L315 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-02-02 09:17:59,768 INFO L320 CfgBuilder]: Removed 0 assume(true) statements. [2024-02-02 09:17:59,768 INFO L201 PluginConnector]: Adding new model witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.02 09:17:59 BoogieIcfgContainer [2024-02-02 09:17:59,771 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-02-02 09:17:59,773 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-02-02 09:17:59,774 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-02-02 09:17:59,777 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-02-02 09:17:59,777 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 02.02 09:17:58" (1/4) ... [2024-02-02 09:17:59,778 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6fcf2e7a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.02 09:17:59, skipping insertion in model container [2024-02-02 09:17:59,778 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 02.02 09:17:58" (2/4) ... [2024-02-02 09:17:59,779 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6fcf2e7a and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CORRECTNESS_WITNESS 02.02 09:17:59, skipping insertion in model container [2024-02-02 09:17:59,779 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 09:17:59" (3/4) ... [2024-02-02 09:17:59,780 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6fcf2e7a and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CORRECTNESS_WITNESS 02.02 09:17:59, skipping insertion in model container [2024-02-02 09:17:59,780 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.02 09:17:59" (4/4) ... [2024-02-02 09:17:59,781 INFO L112 eAbstractionObserver]: Analyzing ICFG 13-privatized_47-refine-protected2_true.i [2024-02-02 09:17:59,797 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-02-02 09:17:59,797 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 11 error locations. [2024-02-02 09:17:59,797 INFO L518 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-02-02 09:17:59,847 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2024-02-02 09:17:59,879 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 44 places, 43 transitions, 90 flow [2024-02-02 09:17:59,920 INFO L124 PetriNetUnfolderBase]: 3/42 cut-off events. [2024-02-02 09:17:59,920 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-02-02 09:17:59,922 INFO L83 FinitePrefix]: Finished finitePrefix Result has 46 conditions, 42 events. 3/42 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 93 event pairs, 0 based on Foata normal form. 0/28 useless extension candidates. Maximal degree in co-relation 38. Up to 2 conditions per place. [2024-02-02 09:17:59,922 INFO L82 GeneralOperation]: Start removeDead. Operand has 44 places, 43 transitions, 90 flow [2024-02-02 09:17:59,926 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 43 places, 42 transitions, 87 flow [2024-02-02 09:17:59,934 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-02-02 09:17:59,940 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;@df48e4c, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-02-02 09:17:59,940 INFO L358 AbstractCegarLoop]: Starting to check reachability of 16 error locations. [2024-02-02 09:17:59,943 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-02-02 09:17:59,944 INFO L124 PetriNetUnfolderBase]: 0/1 cut-off events. [2024-02-02 09:17:59,944 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-02-02 09:17:59,944 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-02-02 09:17:59,945 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1] [2024-02-02 09:17:59,945 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 13 more)] === [2024-02-02 09:17:59,951 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-02 09:17:59,951 INFO L85 PathProgramCache]: Analyzing trace with hash 6951, now seen corresponding path program 1 times [2024-02-02 09:17:59,959 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-02 09:17:59,960 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1482615655] [2024-02-02 09:17:59,960 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-02 09:17:59,961 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-02 09:18:00,054 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-02 09:18:00,157 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 09:18:00,158 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-02 09:18:00,158 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1482615655] [2024-02-02 09:18:00,158 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1482615655] provided 1 perfect and 0 imperfect interpolant sequences [2024-02-02 09:18:00,159 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-02-02 09:18:00,159 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-02-02 09:18:00,161 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [954323901] [2024-02-02 09:18:00,178 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-02 09:18:00,185 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-02-02 09:18:00,189 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-02 09:18:00,209 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-02-02 09:18:00,209 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-02-02 09:18:00,240 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 19 out of 43 [2024-02-02 09:18:00,243 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 43 places, 42 transitions, 87 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 09:18:00,245 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-02 09:18:00,245 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 19 of 43 [2024-02-02 09:18:00,246 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-02 09:18:00,386 INFO L124 PetriNetUnfolderBase]: 60/222 cut-off events. [2024-02-02 09:18:00,386 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-02-02 09:18:00,389 INFO L83 FinitePrefix]: Finished finitePrefix Result has 377 conditions, 222 events. 60/222 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 24. Compared 1151 event pairs, 22 based on Foata normal form. 27/227 useless extension candidates. Maximal degree in co-relation 366. Up to 92 conditions per place. [2024-02-02 09:18:00,393 INFO L140 encePairwiseOnDemand]: 31/43 looper letters, 26 selfloop transitions, 4 changer transitions 0/48 dead transitions. [2024-02-02 09:18:00,393 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 44 places, 48 transitions, 159 flow [2024-02-02 09:18:00,394 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-02-02 09:18:00,398 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-02-02 09:18:00,403 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 96 transitions. [2024-02-02 09:18:00,404 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.7441860465116279 [2024-02-02 09:18:00,406 INFO L175 Difference]: Start difference. First operand has 43 places, 42 transitions, 87 flow. Second operand 3 states and 96 transitions. [2024-02-02 09:18:00,406 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 44 places, 48 transitions, 159 flow [2024-02-02 09:18:00,408 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 43 places, 48 transitions, 158 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-02-02 09:18:00,411 INFO L231 Difference]: Finished difference. Result has 45 places, 41 transitions, 114 flow [2024-02-02 09:18:00,412 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=43, PETRI_DIFFERENCE_MINUEND_FLOW=80, PETRI_DIFFERENCE_MINUEND_PLACES=41, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=39, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=35, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=114, PETRI_PLACES=45, PETRI_TRANSITIONS=41} [2024-02-02 09:18:00,418 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 2 predicate places. [2024-02-02 09:18:00,418 INFO L495 AbstractCegarLoop]: Abstraction has has 45 places, 41 transitions, 114 flow [2024-02-02 09:18:00,419 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 09:18:00,419 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-02-02 09:18:00,419 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2024-02-02 09:18:00,419 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-02-02 09:18:00,420 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting t_funErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 13 more)] === [2024-02-02 09:18:00,420 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-02 09:18:00,420 INFO L85 PathProgramCache]: Analyzing trace with hash 207313129, now seen corresponding path program 1 times [2024-02-02 09:18:00,421 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-02 09:18:00,421 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1591433756] [2024-02-02 09:18:00,421 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-02 09:18:00,421 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-02 09:18:00,447 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-02 09:18:00,621 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 09:18:00,622 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-02 09:18:00,622 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1591433756] [2024-02-02 09:18:00,623 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1591433756] provided 1 perfect and 0 imperfect interpolant sequences [2024-02-02 09:18:00,623 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-02-02 09:18:00,623 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-02-02 09:18:00,624 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [895368264] [2024-02-02 09:18:00,624 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-02 09:18:00,625 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-02-02 09:18:00,626 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-02 09:18:00,627 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-02-02 09:18:00,627 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-02-02 09:18:00,653 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 23 out of 43 [2024-02-02 09:18:00,653 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 45 places, 41 transitions, 114 flow. Second operand has 4 states, 4 states have (on average 24.25) internal successors, (97), 4 states have internal predecessors, (97), 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 09:18:00,654 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-02 09:18:00,654 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 23 of 43 [2024-02-02 09:18:00,654 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-02 09:18:00,741 INFO L124 PetriNetUnfolderBase]: 49/201 cut-off events. [2024-02-02 09:18:00,741 INFO L125 PetriNetUnfolderBase]: For 37/39 co-relation queries the response was YES. [2024-02-02 09:18:00,742 INFO L83 FinitePrefix]: Finished finitePrefix Result has 376 conditions, 201 events. 49/201 cut-off events. For 37/39 co-relation queries the response was YES. Maximal size of possible extension queue 22. Compared 992 event pairs, 27 based on Foata normal form. 7/196 useless extension candidates. Maximal degree in co-relation 362. Up to 101 conditions per place. [2024-02-02 09:18:00,743 INFO L140 encePairwiseOnDemand]: 39/43 looper letters, 21 selfloop transitions, 2 changer transitions 0/45 dead transitions. [2024-02-02 09:18:00,744 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 46 places, 45 transitions, 170 flow [2024-02-02 09:18:00,744 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-02-02 09:18:00,744 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-02-02 09:18:00,745 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 116 transitions. [2024-02-02 09:18:00,746 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6744186046511628 [2024-02-02 09:18:00,746 INFO L175 Difference]: Start difference. First operand has 45 places, 41 transitions, 114 flow. Second operand 4 states and 116 transitions. [2024-02-02 09:18:00,746 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 46 places, 45 transitions, 170 flow [2024-02-02 09:18:00,747 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 44 places, 45 transitions, 162 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-02-02 09:18:00,748 INFO L231 Difference]: Finished difference. Result has 44 places, 39 transitions, 106 flow [2024-02-02 09:18:00,748 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=43, PETRI_DIFFERENCE_MINUEND_FLOW=102, PETRI_DIFFERENCE_MINUEND_PLACES=41, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=39, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=37, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=106, PETRI_PLACES=44, PETRI_TRANSITIONS=39} [2024-02-02 09:18:00,749 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 1 predicate places. [2024-02-02 09:18:00,749 INFO L495 AbstractCegarLoop]: Abstraction has has 44 places, 39 transitions, 106 flow [2024-02-02 09:18:00,750 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 24.25) internal successors, (97), 4 states have internal predecessors, (97), 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 09:18:00,750 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-02-02 09:18:00,750 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2024-02-02 09:18:00,750 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-02-02 09:18:00,750 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting t_funErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 13 more)] === [2024-02-02 09:18:00,751 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-02 09:18:00,751 INFO L85 PathProgramCache]: Analyzing trace with hash -97320164, now seen corresponding path program 1 times [2024-02-02 09:18:00,751 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-02 09:18:00,751 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1805932818] [2024-02-02 09:18:00,751 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-02 09:18:00,752 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-02 09:18:00,766 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-02 09:18:00,835 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 09:18:00,836 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-02 09:18:00,836 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1805932818] [2024-02-02 09:18:00,836 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1805932818] provided 1 perfect and 0 imperfect interpolant sequences [2024-02-02 09:18:00,836 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-02-02 09:18:00,836 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-02-02 09:18:00,837 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [28261911] [2024-02-02 09:18:00,837 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-02 09:18:00,837 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-02-02 09:18:00,837 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-02 09:18:00,838 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-02-02 09:18:00,838 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-02-02 09:18:00,864 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 43 [2024-02-02 09:18:00,864 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 44 places, 39 transitions, 106 flow. Second operand has 4 states, 4 states have (on average 15.75) internal successors, (63), 4 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 09:18:00,864 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-02 09:18:00,865 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 43 [2024-02-02 09:18:00,865 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-02 09:18:00,931 INFO L124 PetriNetUnfolderBase]: 73/252 cut-off events. [2024-02-02 09:18:00,931 INFO L125 PetriNetUnfolderBase]: For 31/31 co-relation queries the response was YES. [2024-02-02 09:18:00,932 INFO L83 FinitePrefix]: Finished finitePrefix Result has 510 conditions, 252 events. 73/252 cut-off events. For 31/31 co-relation queries the response was YES. Maximal size of possible extension queue 25. Compared 1304 event pairs, 22 based on Foata normal form. 8/241 useless extension candidates. Maximal degree in co-relation 496. Up to 92 conditions per place. [2024-02-02 09:18:00,933 INFO L140 encePairwiseOnDemand]: 36/43 looper letters, 33 selfloop transitions, 6 changer transitions 0/52 dead transitions. [2024-02-02 09:18:00,933 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 46 places, 52 transitions, 214 flow [2024-02-02 09:18:00,934 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-02-02 09:18:00,934 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-02-02 09:18:00,935 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 96 transitions. [2024-02-02 09:18:00,935 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5581395348837209 [2024-02-02 09:18:00,935 INFO L175 Difference]: Start difference. First operand has 44 places, 39 transitions, 106 flow. Second operand 4 states and 96 transitions. [2024-02-02 09:18:00,935 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 46 places, 52 transitions, 214 flow [2024-02-02 09:18:00,936 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 44 places, 52 transitions, 211 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-02-02 09:18:00,937 INFO L231 Difference]: Finished difference. Result has 45 places, 39 transitions, 122 flow [2024-02-02 09:18:00,937 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=43, PETRI_DIFFERENCE_MINUEND_FLOW=101, PETRI_DIFFERENCE_MINUEND_PLACES=41, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=38, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=32, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=122, PETRI_PLACES=45, PETRI_TRANSITIONS=39} [2024-02-02 09:18:00,938 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 2 predicate places. [2024-02-02 09:18:00,938 INFO L495 AbstractCegarLoop]: Abstraction has has 45 places, 39 transitions, 122 flow [2024-02-02 09:18:00,938 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 15.75) internal successors, (63), 4 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 09:18:00,939 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-02-02 09:18:00,939 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-02-02 09:18:00,939 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-02-02 09:18:00,939 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting t_funErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 13 more)] === [2024-02-02 09:18:00,939 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-02 09:18:00,939 INFO L85 PathProgramCache]: Analyzing trace with hash 1278042444, now seen corresponding path program 1 times [2024-02-02 09:18:00,940 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-02 09:18:00,940 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1785860929] [2024-02-02 09:18:00,940 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-02 09:18:00,940 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-02 09:18:00,952 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-02 09:18:01,003 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 09:18:01,003 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-02 09:18:01,003 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1785860929] [2024-02-02 09:18:01,004 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1785860929] provided 1 perfect and 0 imperfect interpolant sequences [2024-02-02 09:18:01,004 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-02-02 09:18:01,004 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-02-02 09:18:01,004 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1430781413] [2024-02-02 09:18:01,004 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-02 09:18:01,004 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-02-02 09:18:01,005 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-02 09:18:01,005 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-02-02 09:18:01,005 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-02-02 09:18:01,035 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 43 [2024-02-02 09:18:01,036 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 45 places, 39 transitions, 122 flow. Second operand has 4 states, 4 states have (on average 17.0) internal successors, (68), 4 states have internal predecessors, (68), 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 09:18:01,036 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-02 09:18:01,036 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 43 [2024-02-02 09:18:01,036 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-02 09:18:01,088 INFO L124 PetriNetUnfolderBase]: 50/159 cut-off events. [2024-02-02 09:18:01,088 INFO L125 PetriNetUnfolderBase]: For 81/84 co-relation queries the response was YES. [2024-02-02 09:18:01,089 INFO L83 FinitePrefix]: Finished finitePrefix Result has 360 conditions, 159 events. 50/159 cut-off events. For 81/84 co-relation queries the response was YES. Maximal size of possible extension queue 14. Compared 626 event pairs, 12 based on Foata normal form. 25/177 useless extension candidates. Maximal degree in co-relation 345. Up to 65 conditions per place. [2024-02-02 09:18:01,090 INFO L140 encePairwiseOnDemand]: 35/43 looper letters, 21 selfloop transitions, 2 changer transitions 9/44 dead transitions. [2024-02-02 09:18:01,090 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 44 places, 44 transitions, 181 flow [2024-02-02 09:18:01,090 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-02-02 09:18:01,090 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-02-02 09:18:01,091 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 97 transitions. [2024-02-02 09:18:01,091 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.563953488372093 [2024-02-02 09:18:01,091 INFO L175 Difference]: Start difference. First operand has 45 places, 39 transitions, 122 flow. Second operand 4 states and 97 transitions. [2024-02-02 09:18:01,091 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 44 places, 44 transitions, 181 flow [2024-02-02 09:18:01,093 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 40 places, 44 transitions, 171 flow, removed 1 selfloop flow, removed 4 redundant places. [2024-02-02 09:18:01,093 INFO L231 Difference]: Finished difference. Result has 40 places, 28 transitions, 75 flow [2024-02-02 09:18:01,094 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=43, PETRI_DIFFERENCE_MINUEND_FLOW=81, PETRI_DIFFERENCE_MINUEND_PLACES=37, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=32, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=30, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=75, PETRI_PLACES=40, PETRI_TRANSITIONS=28} [2024-02-02 09:18:01,094 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, -3 predicate places. [2024-02-02 09:18:01,095 INFO L495 AbstractCegarLoop]: Abstraction has has 40 places, 28 transitions, 75 flow [2024-02-02 09:18:01,095 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 17.0) internal successors, (68), 4 states have internal predecessors, (68), 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 09:18:01,095 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-02-02 09:18:01,095 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-02-02 09:18:01,095 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-02-02 09:18:01,096 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 13 more)] === [2024-02-02 09:18:01,096 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-02 09:18:01,096 INFO L85 PathProgramCache]: Analyzing trace with hash 1212577191, now seen corresponding path program 1 times [2024-02-02 09:18:01,096 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-02 09:18:01,096 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1843805652] [2024-02-02 09:18:01,097 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-02 09:18:01,097 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-02 09:18:01,110 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-02 09:18:01,191 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 09:18:01,192 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-02 09:18:01,192 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1843805652] [2024-02-02 09:18:01,192 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1843805652] provided 1 perfect and 0 imperfect interpolant sequences [2024-02-02 09:18:01,192 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-02-02 09:18:01,193 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-02-02 09:18:01,193 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1199462713] [2024-02-02 09:18:01,193 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-02 09:18:01,193 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-02-02 09:18:01,194 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-02 09:18:01,194 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-02-02 09:18:01,194 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-02-02 09:18:01,216 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 43 [2024-02-02 09:18:01,216 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 40 places, 28 transitions, 75 flow. Second operand has 4 states, 4 states have (on average 16.75) internal successors, (67), 4 states have internal predecessors, (67), 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 09:18:01,217 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-02 09:18:01,217 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 43 [2024-02-02 09:18:01,217 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-02 09:18:01,267 INFO L124 PetriNetUnfolderBase]: 37/105 cut-off events. [2024-02-02 09:18:01,267 INFO L125 PetriNetUnfolderBase]: For 24/24 co-relation queries the response was YES. [2024-02-02 09:18:01,268 INFO L83 FinitePrefix]: Finished finitePrefix Result has 237 conditions, 105 events. 37/105 cut-off events. For 24/24 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 326 event pairs, 9 based on Foata normal form. 0/102 useless extension candidates. Maximal degree in co-relation 224. Up to 47 conditions per place. [2024-02-02 09:18:01,268 INFO L140 encePairwiseOnDemand]: 35/43 looper letters, 19 selfloop transitions, 8 changer transitions 0/33 dead transitions. [2024-02-02 09:18:01,269 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 36 places, 33 transitions, 145 flow [2024-02-02 09:18:01,269 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-02-02 09:18:01,269 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-02-02 09:18:01,270 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 105 transitions. [2024-02-02 09:18:01,270 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4883720930232558 [2024-02-02 09:18:01,271 INFO L175 Difference]: Start difference. First operand has 40 places, 28 transitions, 75 flow. Second operand 5 states and 105 transitions. [2024-02-02 09:18:01,271 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 36 places, 33 transitions, 145 flow [2024-02-02 09:18:01,271 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 34 places, 33 transitions, 141 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-02-02 09:18:01,272 INFO L231 Difference]: Finished difference. Result has 34 places, 26 transitions, 87 flow [2024-02-02 09:18:01,272 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=43, PETRI_DIFFERENCE_MINUEND_FLOW=64, PETRI_DIFFERENCE_MINUEND_PLACES=30, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=24, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=18, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=87, PETRI_PLACES=34, PETRI_TRANSITIONS=26} [2024-02-02 09:18:01,273 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, -9 predicate places. [2024-02-02 09:18:01,273 INFO L495 AbstractCegarLoop]: Abstraction has has 34 places, 26 transitions, 87 flow [2024-02-02 09:18:01,273 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 16.75) internal successors, (67), 4 states have internal predecessors, (67), 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 09:18:01,274 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-02-02 09:18:01,274 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-02-02 09:18:01,274 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-02-02 09:18:01,274 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 13 more)] === [2024-02-02 09:18:01,275 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-02 09:18:01,275 INFO L85 PathProgramCache]: Analyzing trace with hash -1081500617, now seen corresponding path program 1 times [2024-02-02 09:18:01,275 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-02 09:18:01,275 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1590198761] [2024-02-02 09:18:01,275 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-02 09:18:01,275 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-02 09:18:01,286 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-02 09:18:01,331 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 09:18:01,332 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-02 09:18:01,332 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1590198761] [2024-02-02 09:18:01,332 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1590198761] provided 1 perfect and 0 imperfect interpolant sequences [2024-02-02 09:18:01,332 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-02-02 09:18:01,333 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-02-02 09:18:01,333 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [428706455] [2024-02-02 09:18:01,333 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-02 09:18:01,333 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-02-02 09:18:01,334 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-02 09:18:01,334 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-02-02 09:18:01,334 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-02-02 09:18:01,334 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 26 out of 43 [2024-02-02 09:18:01,335 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 34 places, 26 transitions, 87 flow. Second operand has 3 states, 3 states have (on average 29.0) internal successors, (87), 3 states have internal predecessors, (87), 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 09:18:01,335 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-02 09:18:01,335 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 26 of 43 [2024-02-02 09:18:01,335 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-02 09:18:01,361 INFO L124 PetriNetUnfolderBase]: 7/48 cut-off events. [2024-02-02 09:18:01,361 INFO L125 PetriNetUnfolderBase]: For 14/14 co-relation queries the response was YES. [2024-02-02 09:18:01,362 INFO L83 FinitePrefix]: Finished finitePrefix Result has 104 conditions, 48 events. 7/48 cut-off events. For 14/14 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 68 event pairs, 2 based on Foata normal form. 5/51 useless extension candidates. Maximal degree in co-relation 90. Up to 18 conditions per place. [2024-02-02 09:18:01,362 INFO L140 encePairwiseOnDemand]: 40/43 looper letters, 10 selfloop transitions, 3 changer transitions 3/26 dead transitions. [2024-02-02 09:18:01,362 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 36 places, 26 transitions, 110 flow [2024-02-02 09:18:01,362 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-02-02 09:18:01,362 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-02-02 09:18:01,364 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 95 transitions. [2024-02-02 09:18:01,365 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.7364341085271318 [2024-02-02 09:18:01,365 INFO L175 Difference]: Start difference. First operand has 34 places, 26 transitions, 87 flow. Second operand 3 states and 95 transitions. [2024-02-02 09:18:01,365 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 36 places, 26 transitions, 110 flow [2024-02-02 09:18:01,367 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 32 places, 26 transitions, 96 flow, removed 2 selfloop flow, removed 4 redundant places. [2024-02-02 09:18:01,368 INFO L231 Difference]: Finished difference. Result has 32 places, 21 transitions, 60 flow [2024-02-02 09:18:01,368 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=43, PETRI_DIFFERENCE_MINUEND_FLOW=62, PETRI_DIFFERENCE_MINUEND_PLACES=30, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=24, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=21, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=60, PETRI_PLACES=32, PETRI_TRANSITIONS=21} [2024-02-02 09:18:01,370 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, -11 predicate places. [2024-02-02 09:18:01,371 INFO L495 AbstractCegarLoop]: Abstraction has has 32 places, 21 transitions, 60 flow [2024-02-02 09:18:01,371 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 29.0) internal successors, (87), 3 states have internal predecessors, (87), 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 09:18:01,371 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-02-02 09:18:01,371 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-02-02 09:18:01,371 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-02-02 09:18:01,372 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 13 more)] === [2024-02-02 09:18:01,372 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-02 09:18:01,378 INFO L85 PathProgramCache]: Analyzing trace with hash 1357404471, now seen corresponding path program 1 times [2024-02-02 09:18:01,379 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-02 09:18:01,383 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [378636814] [2024-02-02 09:18:01,383 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-02 09:18:01,383 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-02 09:18:01,412 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-02-02 09:18:01,413 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-02-02 09:18:01,430 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-02-02 09:18:01,455 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2024-02-02 09:18:01,455 INFO L360 BasicCegarLoop]: Counterexample is feasible [2024-02-02 09:18:01,456 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr5ASSERT_VIOLATIONWITNESS_INVARIANT (15 of 16 remaining) [2024-02-02 09:18:01,457 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT (14 of 16 remaining) [2024-02-02 09:18:01,458 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (13 of 16 remaining) [2024-02-02 09:18:01,458 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (12 of 16 remaining) [2024-02-02 09:18:01,458 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION (11 of 16 remaining) [2024-02-02 09:18:01,459 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION (10 of 16 remaining) [2024-02-02 09:18:01,459 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr6ASSERT_VIOLATIONWITNESS_INVARIANT (9 of 16 remaining) [2024-02-02 09:18:01,459 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (8 of 16 remaining) [2024-02-02 09:18:01,460 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONWITNESS_INVARIANT (7 of 16 remaining) [2024-02-02 09:18:01,460 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1ASSERT_VIOLATIONWITNESS_INVARIANT (6 of 16 remaining) [2024-02-02 09:18:01,460 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2ASSERT_VIOLATIONWITNESS_INVARIANT (5 of 16 remaining) [2024-02-02 09:18:01,460 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3ASSERT_VIOLATIONWITNESS_INVARIANT (4 of 16 remaining) [2024-02-02 09:18:01,460 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONWITNESS_INVARIANT (3 of 16 remaining) [2024-02-02 09:18:01,461 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1ASSERT_VIOLATIONWITNESS_INVARIANT (2 of 16 remaining) [2024-02-02 09:18:01,461 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2ASSERT_VIOLATIONWITNESS_INVARIANT (1 of 16 remaining) [2024-02-02 09:18:01,461 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3ASSERT_VIOLATIONWITNESS_INVARIANT (0 of 16 remaining) [2024-02-02 09:18:01,461 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-02-02 09:18:01,462 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1, 1] [2024-02-02 09:18:01,468 INFO L229 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2024-02-02 09:18:01,468 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2024-02-02 09:18:01,507 INFO L503 ceAbstractionStarter]: Automizer considered 9 witness invariants [2024-02-02 09:18:01,508 INFO L504 ceAbstractionStarter]: WitnessConsidered=9 [2024-02-02 09:18:01,510 INFO L201 PluginConnector]: Adding new model witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 02.02 09:18:01 BasicIcfg [2024-02-02 09:18:01,510 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2024-02-02 09:18:01,512 INFO L158 Benchmark]: Toolchain (without parser) took 2775.37ms. Allocated memory was 167.8MB in the beginning and 209.7MB in the end (delta: 41.9MB). Free memory was 131.8MB in the beginning and 167.9MB in the end (delta: -36.1MB). Peak memory consumption was 8.0MB. Max. memory is 16.1GB. [2024-02-02 09:18:01,513 INFO L158 Benchmark]: CDTParser took 0.19ms. Allocated memory is still 167.8MB. Free memory is still 136.3MB. There was no memory consumed. Max. memory is 16.1GB. [2024-02-02 09:18:01,513 INFO L158 Benchmark]: Witness Parser took 0.18ms. Allocated memory is still 167.8MB. Free memory was 135.1MB in the beginning and 134.5MB in the end (delta: 568.3kB). There was no memory consumed. Max. memory is 16.1GB. [2024-02-02 09:18:01,513 INFO L158 Benchmark]: CACSL2BoogieTranslator took 541.35ms. Allocated memory is still 167.8MB. Free memory was 131.3MB in the beginning and 109.3MB in the end (delta: 21.9MB). Peak memory consumption was 23.1MB. Max. memory is 16.1GB. [2024-02-02 09:18:01,513 INFO L158 Benchmark]: Boogie Procedure Inliner took 59.08ms. Allocated memory is still 167.8MB. Free memory was 109.3MB in the beginning and 107.2MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2024-02-02 09:18:01,514 INFO L158 Benchmark]: Boogie Preprocessor took 34.42ms. Allocated memory is still 167.8MB. Free memory was 107.2MB in the beginning and 105.1MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2024-02-02 09:18:01,514 INFO L158 Benchmark]: RCFGBuilder took 397.77ms. Allocated memory is still 167.8MB. Free memory was 105.1MB in the beginning and 84.7MB in the end (delta: 20.4MB). Peak memory consumption was 18.9MB. Max. memory is 16.1GB. [2024-02-02 09:18:01,514 INFO L158 Benchmark]: TraceAbstraction took 1737.06ms. Allocated memory was 167.8MB in the beginning and 209.7MB in the end (delta: 41.9MB). Free memory was 84.2MB in the beginning and 167.9MB in the end (delta: -83.8MB). There was no memory consumed. Max. memory is 16.1GB. [2024-02-02 09:18:01,517 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.19ms. Allocated memory is still 167.8MB. Free memory is still 136.3MB. There was no memory consumed. Max. memory is 16.1GB. * Witness Parser took 0.18ms. Allocated memory is still 167.8MB. Free memory was 135.1MB in the beginning and 134.5MB in the end (delta: 568.3kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 541.35ms. Allocated memory is still 167.8MB. Free memory was 131.3MB in the beginning and 109.3MB in the end (delta: 21.9MB). Peak memory consumption was 23.1MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 59.08ms. Allocated memory is still 167.8MB. Free memory was 109.3MB in the beginning and 107.2MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 34.42ms. Allocated memory is still 167.8MB. Free memory was 107.2MB in the beginning and 105.1MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 397.77ms. Allocated memory is still 167.8MB. Free memory was 105.1MB in the beginning and 84.7MB in the end (delta: 20.4MB). Peak memory consumption was 18.9MB. Max. memory is 16.1GB. * TraceAbstraction took 1737.06ms. Allocated memory was 167.8MB in the beginning and 209.7MB in the end (delta: 41.9MB). Free memory was 84.2MB in the beginning and 167.9MB in the end (delta: -83.8MB). There was no memory consumed. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 693]: invariant of correctness witness can be violated invariant of correctness witness can be violated We found a FailurePath: [L681] 0 int g = 0; [L682] 0 pthread_mutex_t A = { { 0, 0, 0, PTHREAD_MUTEX_TIMED_NP, 0, { { 0, 0 } } } }; [L682] 0 pthread_mutex_t A = { { 0, 0, 0, PTHREAD_MUTEX_TIMED_NP, 0, { { 0, 0 } } } }; [L682] 0 pthread_mutex_t A = { { 0, 0, 0, PTHREAD_MUTEX_TIMED_NP, 0, { { 0, 0 } } } }; [L682] 0 pthread_mutex_t A = { { 0, 0, 0, PTHREAD_MUTEX_TIMED_NP, 0, { { 0, 0 } } } }; [L682] 0 pthread_mutex_t A = { { 0, 0, 0, PTHREAD_MUTEX_TIMED_NP, 0, { { 0, 0 } } } }; [L682] 0 pthread_mutex_t A = { { 0, 0, 0, PTHREAD_MUTEX_TIMED_NP, 0, { { 0, 0 } } } }; [L690] 0 pthread_t id; VAL [A={3:0}, g=0, id={5:0}] [L691] 0 CodeAnnotStmt[Assertion[BinaryExpression[COMPEQ,IdentifierExpression[g],IntegerLiteral[0]]]] [L691] FCALL, FORK 0 pthread_create(&id, ((void *)0), t_fun, ((void *)0)) VAL [A={3:0}, arg={0:0}, g=0, id={5:0}] [L684] 1 CodeAnnotStmt[Assertion[BinaryExpression[COMPEQ,CastExpression[ACSLType[unsigned long],IdentifierExpression[arg]],IntegerLiteral[0UL]]]] VAL [A={3:0}, arg={0:0}, arg={0:0}, g=0] [L685] 1 CodeAnnotStmt[Assertion[BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[COMPLEQ,IntegerLiteral[0],IdentifierExpression[g]],BinaryExpression[COMPLEQ,IdentifierExpression[g],IntegerLiteral[1]]],BinaryExpression[COMPEQ,CastExpression[ACSLType[unsigned long],IdentifierExpression[arg]],IntegerLiteral[0UL]]],BinaryExpression[LOGICOR,BinaryExpression[COMPEQ,IdentifierExpression[g],IntegerLiteral[0]],BinaryExpression[COMPEQ,IdentifierExpression[g],IntegerLiteral[1]]]]]] [L685] 1 g = 1 VAL [A={3:0}, arg={0:0}, arg={0:0}, g=1] [L686] 1 CodeAnnotStmt[Assertion[BinaryExpression[LOGICAND,BinaryExpression[COMPEQ,IdentifierExpression[g],IntegerLiteral[1]],BinaryExpression[COMPEQ,CastExpression[ACSLType[unsigned long],IdentifierExpression[arg]],IntegerLiteral[0UL]]]]] VAL [A={3:0}, arg={0:0}, arg={0:0}, g=1] [L693] 0 CodeAnnotStmt[Assertion[BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[COMPLEQ,IntegerLiteral[0],IdentifierExpression[g]],BinaryExpression[COMPLEQ,IdentifierExpression[g],IntegerLiteral[1]]],BinaryExpression[LOGICOR,BinaryExpression[COMPEQ,IdentifierExpression[g],IntegerLiteral[0]],BinaryExpression[COMPEQ,IdentifierExpression[g],IntegerLiteral[1]]]]]] VAL [A={3:0}, arg={0:0}, arg={0:0}, g=1, id={5:0}] [L693] COND TRUE 0 \read(g) VAL [A={3:0}, arg={0:0}, arg={0:0}, g=1, id={5:0}] [L694] 0 CodeAnnotStmt[Assertion[BinaryExpression[COMPEQ,IdentifierExpression[g],IntegerLiteral[1]]]] [L694] CALL 0 __VERIFIER_assert(g) [L19] COND FALSE 0 !(!(cond)) VAL [A={3:0}, \old(cond)=1, arg={0:0}, arg={0:0}, cond=1, g=1] [L694] RET 0 __VERIFIER_assert(g) [L693] 0 CodeAnnotStmt[Assertion[BinaryExpression[COMPEQ,IdentifierExpression[g],IntegerLiteral[0]]]] VAL [A={3:0}, arg={0:0}, arg={0:0}, g=1, id={5:0}] - UnprovableResult [Line: 691]: Unable to prove that invariant of correctness witness holds Unable to prove that invariant of correctness witness holds Reason: Not analyzed. - UnprovableResult [Line: 693]: Unable to prove that invariant of correctness witness holds Unable to prove that invariant of correctness witness holds Reason: Not analyzed. - UnprovableResult [Line: 694]: Unable to prove that invariant of correctness witness holds Unable to prove that invariant of correctness witness holds Reason: Not analyzed. - UnprovableResult [Line: 19]: 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: 19]: 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: 697]: Unable to prove that invariant of correctness witness holds Unable to prove that invariant of correctness witness holds Reason: Not analyzed. - UnprovableResult [Line: 691]: 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: 684]: Unable to prove that invariant of correctness witness holds Unable to prove that invariant of correctness witness holds Reason: Not analyzed. - UnprovableResult [Line: 685]: Unable to prove that invariant of correctness witness holds Unable to prove that invariant of correctness witness holds Reason: Not analyzed. - UnprovableResult [Line: 686]: Unable to prove that invariant of correctness witness holds Unable to prove that invariant of correctness witness holds Reason: Not analyzed. - UnprovableResult [Line: 687]: Unable to prove that invariant of correctness witness holds Unable to prove that invariant of correctness witness holds Reason: Not analyzed. - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 3 procedures, 56 locations, 16 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: 1.6s, OverallIterations: 7, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.6s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.1s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 237 SdHoareTripleChecker+Valid, 0.3s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 174 mSDsluCounter, 48 SdHoareTripleChecker+Invalid, 0.3s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 20 mSDsCounter, 42 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 313 IncrementalHoareTripleChecker+Invalid, 355 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 42 mSolverCounterUnsat, 28 mSDtfsCounter, 313 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=122occurred in iteration=3, InterpolantAutomatonStates: 23, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.5s InterpolantComputationTime, 69 NumberOfCodeBlocks, 69 NumberOfCodeBlocksAsserted, 7 NumberOfCheckSat, 44 ConstructedInterpolants, 0 QuantifiedInterpolants, 181 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 09:18:01,551 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