./Ultimate.py --spec ../../../trunk/examples/svcomp/properties/unreach-call.prp --file ../../../trunk/examples/svcomp/goblint-regression/13-privatized_52-refine-protected-loop2-small_true.i --full-output --witness-type correctness_witness --witnessparser.only.consider.loop.invariants false --validate ./goblint.2024-02-07_10-47-16.files/SV-COMP24_unreach-call/13-privatized_52-refine-protected-loop2-small_true.yml/witness.yml --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 958ec4d9 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_52-refine-protected-loop2-small_true.i ./goblint.2024-02-07_10-47-16.files/SV-COMP24_unreach-call/13-privatized_52-refine-protected-loop2-small_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-958ec4d-m [2024-02-07 14:26:43,510 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-02-07 14:26:43,576 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-02-07 14:26:43,581 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-02-07 14:26:43,582 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-02-07 14:26:43,604 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-02-07 14:26:43,605 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-02-07 14:26:43,606 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-02-07 14:26:43,606 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-02-07 14:26:43,611 INFO L153 SettingsManager]: * Use memory slicer=true [2024-02-07 14:26:43,611 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-02-07 14:26:43,611 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-02-07 14:26:43,612 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-02-07 14:26:43,613 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-02-07 14:26:43,613 INFO L153 SettingsManager]: * Use SBE=true [2024-02-07 14:26:43,614 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-02-07 14:26:43,614 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-02-07 14:26:43,614 INFO L153 SettingsManager]: * sizeof long=4 [2024-02-07 14:26:43,614 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-02-07 14:26:43,615 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-02-07 14:26:43,615 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-02-07 14:26:43,615 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-02-07 14:26:43,615 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-02-07 14:26:43,616 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-02-07 14:26:43,616 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-02-07 14:26:43,616 INFO L153 SettingsManager]: * sizeof long double=12 [2024-02-07 14:26:43,616 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-02-07 14:26:43,616 INFO L153 SettingsManager]: * Use constant arrays=true [2024-02-07 14:26:43,617 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-02-07 14:26:43,617 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-02-07 14:26:43,618 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-02-07 14:26:43,618 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-02-07 14:26:43,618 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-02-07 14:26:43,619 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-02-07 14:26:43,619 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-02-07 14:26:43,619 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-02-07 14:26:43,619 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-02-07 14:26:43,620 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-02-07 14:26:43,620 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-02-07 14:26:43,620 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-02-07 14:26:43,620 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2024-02-07 14:26:43,620 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-02-07 14:26:43,621 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-02-07 14:26:43,621 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessparser: Only consider loop invariants -> false [2024-02-07 14:26:43,850 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-02-07 14:26:43,873 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-02-07 14:26:43,875 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-02-07 14:26:43,876 INFO L270 PluginConnector]: Initializing CDTParser... [2024-02-07 14:26:43,877 INFO L274 PluginConnector]: CDTParser initialized [2024-02-07 14:26:43,878 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/goblint-regression/13-privatized_52-refine-protected-loop2-small_true.i [2024-02-07 14:26:44,899 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-02-07 14:26:45,087 INFO L384 CDTParser]: Found 1 translation units. [2024-02-07 14:26:45,087 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/goblint-regression/13-privatized_52-refine-protected-loop2-small_true.i [2024-02-07 14:26:45,098 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/87f55e734/66b4a0a175d74d4c8977c5d23e06ca25/FLAG627490d47 [2024-02-07 14:26:45,111 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/87f55e734/66b4a0a175d74d4c8977c5d23e06ca25 [2024-02-07 14:26:45,113 INFO L270 PluginConnector]: Initializing Witness Parser... [2024-02-07 14:26:45,114 INFO L274 PluginConnector]: Witness Parser initialized [2024-02-07 14:26:45,114 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/./goblint.2024-02-07_10-47-16.files/SV-COMP24_unreach-call/13-privatized_52-refine-protected-loop2-small_true.yml/witness.yml [2024-02-07 14:26:45,174 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-02-07 14:26:45,175 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2024-02-07 14:26:45,176 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-02-07 14:26:45,177 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-02-07 14:26:45,180 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-02-07 14:26:45,181 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.02 02:26:45" (1/2) ... [2024-02-07 14:26:45,182 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@73e96126 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.02 02:26:45, skipping insertion in model container [2024-02-07 14:26:45,182 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.02 02:26:45" (1/2) ... [2024-02-07 14:26:45,183 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@8cc3daf and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.02 02:26:45, skipping insertion in model container [2024-02-07 14:26:45,183 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 07.02 02:26:45" (2/2) ... [2024-02-07 14:26:45,183 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@73e96126 and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 07.02 02:26:45, skipping insertion in model container [2024-02-07 14:26:45,184 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 07.02 02:26:45" (2/2) ... [2024-02-07 14:26:45,184 INFO L83 nessWitnessExtractor]: Extracting all invariants from correctness witness [2024-02-07 14:26:45,207 INFO L74 edCorrectnessWitness]: Found the following entries in the witness: [2024-02-07 14:26:45,208 INFO L76 edCorrectnessWitness]: Location invariant before [L689-L689] g == 1000 [2024-02-07 14:26:45,208 INFO L76 edCorrectnessWitness]: Location invariant before [L691-L691] g == 1000 [2024-02-07 14:26:45,208 INFO L76 edCorrectnessWitness]: Location invariant before [L693-L693] g == 999 [2024-02-07 14:26:45,209 INFO L76 edCorrectnessWitness]: Location invariant before [L690-L690] g == 1000 [2024-02-07 14:26:45,252 INFO L178 MainTranslator]: Built tables and reachable declarations [2024-02-07 14:26:45,374 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_52-refine-protected-loop2-small_true.i[1105,1118] [2024-02-07 14:26:45,509 INFO L209 PostProcessor]: Analyzing one entry point: main [2024-02-07 14:26:45,527 INFO L203 MainTranslator]: Completed pre-run [2024-02-07 14:26:45,540 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_52-refine-protected-loop2-small_true.i[1105,1118] Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local [2024-02-07 14:26:45,585 INFO L209 PostProcessor]: Analyzing one entry point: main [2024-02-07 14:26:45,614 INFO L207 MainTranslator]: Completed translation [2024-02-07 14:26:45,614 INFO L201 PluginConnector]: Adding new model witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 07.02 02:26:45 WrapperNode [2024-02-07 14:26:45,615 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-02-07 14:26:45,615 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-02-07 14:26:45,616 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-02-07 14:26:45,616 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-02-07 14:26:45,621 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 07.02 02:26:45" (1/1) ... [2024-02-07 14:26:45,632 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 07.02 02:26:45" (1/1) ... [2024-02-07 14:26:45,647 INFO L138 Inliner]: procedures = 163, calls = 28, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 71 [2024-02-07 14:26:45,647 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-02-07 14:26:45,648 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-02-07 14:26:45,648 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-02-07 14:26:45,648 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-02-07 14:26:45,655 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 07.02 02:26:45" (1/1) ... [2024-02-07 14:26:45,656 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 07.02 02:26:45" (1/1) ... [2024-02-07 14:26:45,657 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 07.02 02:26:45" (1/1) ... [2024-02-07 14:26:45,667 INFO L175 MemorySlicer]: Split 13 memory accesses to 4 slices as follows [2, 5, 5, 1]. 38 percent of accesses are in the largest equivalence class. The 12 initializations are split as follows [2, 5, 5, 0]. The 1 writes are split as follows [0, 0, 0, 1]. [2024-02-07 14:26:45,667 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 07.02 02:26:45" (1/1) ... [2024-02-07 14:26:45,667 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 07.02 02:26:45" (1/1) ... [2024-02-07 14:26:45,671 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 07.02 02:26:45" (1/1) ... [2024-02-07 14:26:45,673 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 07.02 02:26:45" (1/1) ... [2024-02-07 14:26:45,674 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 07.02 02:26:45" (1/1) ... [2024-02-07 14:26:45,675 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 07.02 02:26:45" (1/1) ... [2024-02-07 14:26:45,676 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-02-07 14:26:45,677 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-02-07 14:26:45,677 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-02-07 14:26:45,677 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-02-07 14:26:45,678 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 07.02 02:26:45" (1/1) ... [2024-02-07 14:26:45,682 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-02-07 14:26:45,688 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-02-07 14:26:45,700 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) [2024-02-07 14:26:45,719 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 [2024-02-07 14:26:45,739 INFO L130 BoogieDeclarations]: Found specification of procedure worker [2024-02-07 14:26:45,740 INFO L138 BoogieDeclarations]: Found implementation of procedure worker [2024-02-07 14:26:45,740 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-02-07 14:26:45,740 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2024-02-07 14:26:45,740 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#2 [2024-02-07 14:26:45,740 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#3 [2024-02-07 14:26:45,740 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2024-02-07 14:26:45,740 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-02-07 14:26:45,741 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2024-02-07 14:26:45,741 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2024-02-07 14:26:45,741 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-02-07 14:26:45,741 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-02-07 14:26:45,741 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2024-02-07 14:26:45,741 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#3 [2024-02-07 14:26:45,741 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexUnlock [2024-02-07 14:26:45,741 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-02-07 14:26:45,742 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-02-07 14:26:45,743 WARN L214 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2024-02-07 14:26:45,846 INFO L244 CfgBuilder]: Building ICFG [2024-02-07 14:26:45,848 INFO L270 CfgBuilder]: Building CFG for each procedure with an implementation [2024-02-07 14:26:46,067 INFO L289 CfgBuilder]: Ommited future-live optimization because the input is a concurrent program. [2024-02-07 14:26:46,068 INFO L293 CfgBuilder]: Performing block encoding [2024-02-07 14:26:46,203 INFO L315 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-02-07 14:26:46,204 INFO L320 CfgBuilder]: Removed 1 assume(true) statements. [2024-02-07 14:26:46,208 INFO L201 PluginConnector]: Adding new model witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.02 02:26:46 BoogieIcfgContainer [2024-02-07 14:26:46,208 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-02-07 14:26:46,209 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-02-07 14:26:46,209 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-02-07 14:26:46,214 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-02-07 14:26:46,217 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 07.02 02:26:45" (1/4) ... [2024-02-07 14:26:46,218 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@78d1d506 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.02 02:26:46, skipping insertion in model container [2024-02-07 14:26:46,218 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 07.02 02:26:45" (2/4) ... [2024-02-07 14:26:46,218 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@78d1d506 and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CORRECTNESS_WITNESS 07.02 02:26:46, skipping insertion in model container [2024-02-07 14:26:46,218 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 07.02 02:26:45" (3/4) ... [2024-02-07 14:26:46,218 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@78d1d506 and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CORRECTNESS_WITNESS 07.02 02:26:46, skipping insertion in model container [2024-02-07 14:26:46,219 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.02 02:26:46" (4/4) ... [2024-02-07 14:26:46,220 INFO L112 eAbstractionObserver]: Analyzing ICFG 13-privatized_52-refine-protected-loop2-small_true.i [2024-02-07 14:26:46,247 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-02-07 14:26:46,247 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 5 error locations. [2024-02-07 14:26:46,247 INFO L518 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-02-07 14:26:46,269 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2024-02-07 14:26:46,298 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 31 places, 30 transitions, 64 flow [2024-02-07 14:26:46,332 INFO L124 PetriNetUnfolderBase]: 3/29 cut-off events. [2024-02-07 14:26:46,334 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-02-07 14:26:46,336 INFO L83 FinitePrefix]: Finished finitePrefix Result has 33 conditions, 29 events. 3/29 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 16 event pairs, 0 based on Foata normal form. 0/21 useless extension candidates. Maximal degree in co-relation 27. Up to 2 conditions per place. [2024-02-07 14:26:46,337 INFO L82 GeneralOperation]: Start removeDead. Operand has 31 places, 30 transitions, 64 flow [2024-02-07 14:26:46,341 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 29 places, 28 transitions, 59 flow [2024-02-07 14:26:46,354 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-02-07 14:26:46,360 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;@579191e9, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-02-07 14:26:46,360 INFO L358 AbstractCegarLoop]: Starting to check reachability of 11 error locations. [2024-02-07 14:26:46,364 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-02-07 14:26:46,364 INFO L124 PetriNetUnfolderBase]: 0/7 cut-off events. [2024-02-07 14:26:46,364 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-02-07 14:26:46,364 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-02-07 14:26:46,365 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2024-02-07 14:26:46,365 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting workerErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, workerErr0ASSERT_VIOLATIONWITNESS_INVARIANT, workerErr1ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2024-02-07 14:26:46,369 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-07 14:26:46,369 INFO L85 PathProgramCache]: Analyzing trace with hash 1413679681, now seen corresponding path program 1 times [2024-02-07 14:26:46,376 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-07 14:26:46,376 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1645628429] [2024-02-07 14:26:46,376 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-07 14:26:46,377 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-07 14:26:46,478 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-07 14:26:46,642 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-07 14:26:46,642 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-07 14:26:46,644 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1645628429] [2024-02-07 14:26:46,645 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1645628429] provided 1 perfect and 0 imperfect interpolant sequences [2024-02-07 14:26:46,645 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-02-07 14:26:46,645 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-02-07 14:26:46,647 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [46278784] [2024-02-07 14:26:46,647 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-07 14:26:46,653 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-02-07 14:26:46,658 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-07 14:26:46,685 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-02-07 14:26:46,685 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-02-07 14:26:46,707 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 30 [2024-02-07 14:26:46,709 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 29 places, 28 transitions, 59 flow. Second operand has 3 states, 3 states have (on average 12.666666666666666) internal successors, (38), 3 states have internal predecessors, (38), 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) [2024-02-07 14:26:46,709 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-07 14:26:46,709 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 30 [2024-02-07 14:26:46,711 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-07 14:26:46,758 INFO L124 PetriNetUnfolderBase]: 12/53 cut-off events. [2024-02-07 14:26:46,758 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-02-07 14:26:46,759 INFO L83 FinitePrefix]: Finished finitePrefix Result has 92 conditions, 53 events. 12/53 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 65 event pairs, 6 based on Foata normal form. 4/54 useless extension candidates. Maximal degree in co-relation 83. Up to 23 conditions per place. [2024-02-07 14:26:46,761 INFO L140 encePairwiseOnDemand]: 23/30 looper letters, 12 selfloop transitions, 2 changer transitions 0/24 dead transitions. [2024-02-07 14:26:46,761 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 28 places, 24 transitions, 79 flow [2024-02-07 14:26:46,762 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-02-07 14:26:46,764 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-02-07 14:26:46,768 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 52 transitions. [2024-02-07 14:26:46,770 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5777777777777777 [2024-02-07 14:26:46,771 INFO L175 Difference]: Start difference. First operand has 29 places, 28 transitions, 59 flow. Second operand 3 states and 52 transitions. [2024-02-07 14:26:46,772 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 28 places, 24 transitions, 79 flow [2024-02-07 14:26:46,774 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 27 places, 24 transitions, 78 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-02-07 14:26:46,776 INFO L231 Difference]: Finished difference. Result has 27 places, 23 transitions, 52 flow [2024-02-07 14:26:46,777 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=48, PETRI_DIFFERENCE_MINUEND_PLACES=25, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=23, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=21, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=52, PETRI_PLACES=27, PETRI_TRANSITIONS=23} [2024-02-07 14:26:46,781 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, -2 predicate places. [2024-02-07 14:26:46,781 INFO L495 AbstractCegarLoop]: Abstraction has has 27 places, 23 transitions, 52 flow [2024-02-07 14:26:46,781 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 12.666666666666666) internal successors, (38), 3 states have internal predecessors, (38), 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) [2024-02-07 14:26:46,781 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-02-07 14:26:46,782 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-02-07 14:26:46,782 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-02-07 14:26:46,782 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting workerErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, workerErr0ASSERT_VIOLATIONWITNESS_INVARIANT, workerErr1ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2024-02-07 14:26:46,783 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-07 14:26:46,783 INFO L85 PathProgramCache]: Analyzing trace with hash 1336515172, now seen corresponding path program 1 times [2024-02-07 14:26:46,783 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-07 14:26:46,783 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1936575105] [2024-02-07 14:26:46,783 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-07 14:26:46,784 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-07 14:26:46,820 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-07 14:26:46,912 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-07 14:26:46,912 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-07 14:26:46,913 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1936575105] [2024-02-07 14:26:46,913 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1936575105] provided 1 perfect and 0 imperfect interpolant sequences [2024-02-07 14:26:46,913 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-02-07 14:26:46,914 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-02-07 14:26:46,914 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [137378917] [2024-02-07 14:26:46,914 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-07 14:26:46,915 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-02-07 14:26:46,915 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-07 14:26:46,916 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-02-07 14:26:46,916 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-02-07 14:26:46,938 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 30 [2024-02-07 14:26:46,939 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 27 places, 23 transitions, 52 flow. Second operand has 4 states, 4 states have (on average 13.5) internal successors, (54), 4 states have internal predecessors, (54), 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) [2024-02-07 14:26:46,939 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-07 14:26:46,939 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 30 [2024-02-07 14:26:46,939 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-07 14:26:46,995 INFO L124 PetriNetUnfolderBase]: 13/50 cut-off events. [2024-02-07 14:26:46,996 INFO L125 PetriNetUnfolderBase]: For 3/3 co-relation queries the response was YES. [2024-02-07 14:26:46,996 INFO L83 FinitePrefix]: Finished finitePrefix Result has 96 conditions, 50 events. 13/50 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 49 event pairs, 6 based on Foata normal form. 0/49 useless extension candidates. Maximal degree in co-relation 87. Up to 23 conditions per place. [2024-02-07 14:26:46,997 INFO L140 encePairwiseOnDemand]: 25/30 looper letters, 12 selfloop transitions, 4 changer transitions 0/23 dead transitions. [2024-02-07 14:26:46,998 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 28 places, 23 transitions, 84 flow [2024-02-07 14:26:46,998 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-02-07 14:26:46,998 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-02-07 14:26:46,999 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 65 transitions. [2024-02-07 14:26:47,000 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5416666666666666 [2024-02-07 14:26:47,000 INFO L175 Difference]: Start difference. First operand has 27 places, 23 transitions, 52 flow. Second operand 4 states and 65 transitions. [2024-02-07 14:26:47,000 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 28 places, 23 transitions, 84 flow [2024-02-07 14:26:47,001 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 26 places, 23 transitions, 80 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-02-07 14:26:47,003 INFO L231 Difference]: Finished difference. Result has 26 places, 21 transitions, 52 flow [2024-02-07 14:26:47,003 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=44, PETRI_DIFFERENCE_MINUEND_PLACES=23, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=21, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=17, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=52, PETRI_PLACES=26, PETRI_TRANSITIONS=21} [2024-02-07 14:26:47,005 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, -3 predicate places. [2024-02-07 14:26:47,006 INFO L495 AbstractCegarLoop]: Abstraction has has 26 places, 21 transitions, 52 flow [2024-02-07 14:26:47,006 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 13.5) internal successors, (54), 4 states have internal predecessors, (54), 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) [2024-02-07 14:26:47,006 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-02-07 14:26:47,010 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-02-07 14:26:47,010 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-02-07 14:26:47,010 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting workerErr4ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, workerErr0ASSERT_VIOLATIONWITNESS_INVARIANT, workerErr1ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2024-02-07 14:26:47,011 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-07 14:26:47,011 INFO L85 PathProgramCache]: Analyzing trace with hash -721539321, now seen corresponding path program 1 times [2024-02-07 14:26:47,011 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-07 14:26:47,012 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [970644342] [2024-02-07 14:26:47,012 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-07 14:26:47,012 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-07 14:26:47,035 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-07 14:26:47,103 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-07 14:26:47,104 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-07 14:26:47,104 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [970644342] [2024-02-07 14:26:47,104 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [970644342] provided 1 perfect and 0 imperfect interpolant sequences [2024-02-07 14:26:47,104 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-02-07 14:26:47,104 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-02-07 14:26:47,104 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [438539496] [2024-02-07 14:26:47,105 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-07 14:26:47,105 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-02-07 14:26:47,105 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-07 14:26:47,106 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-02-07 14:26:47,106 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-02-07 14:26:47,119 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 30 [2024-02-07 14:26:47,119 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 26 places, 21 transitions, 52 flow. Second operand has 4 states, 4 states have (on average 12.25) internal successors, (49), 4 states have internal predecessors, (49), 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) [2024-02-07 14:26:47,119 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-07 14:26:47,120 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 30 [2024-02-07 14:26:47,120 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-07 14:26:47,157 INFO L124 PetriNetUnfolderBase]: 13/52 cut-off events. [2024-02-07 14:26:47,157 INFO L125 PetriNetUnfolderBase]: For 5/5 co-relation queries the response was YES. [2024-02-07 14:26:47,158 INFO L83 FinitePrefix]: Finished finitePrefix Result has 105 conditions, 52 events. 13/52 cut-off events. For 5/5 co-relation queries the response was YES. Maximal size of possible extension queue 2. Compared 48 event pairs, 1 based on Foata normal form. 0/51 useless extension candidates. Maximal degree in co-relation 96. Up to 18 conditions per place. [2024-02-07 14:26:47,158 INFO L140 encePairwiseOnDemand]: 27/30 looper letters, 0 selfloop transitions, 0 changer transitions 24/24 dead transitions. [2024-02-07 14:26:47,158 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 28 places, 24 transitions, 94 flow [2024-02-07 14:26:47,158 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-02-07 14:26:47,158 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-02-07 14:26:47,160 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 58 transitions. [2024-02-07 14:26:47,161 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.48333333333333334 [2024-02-07 14:26:47,161 INFO L175 Difference]: Start difference. First operand has 26 places, 21 transitions, 52 flow. Second operand 4 states and 58 transitions. [2024-02-07 14:26:47,161 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 28 places, 24 transitions, 94 flow [2024-02-07 14:26:47,161 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 25 places, 24 transitions, 84 flow, removed 0 selfloop flow, removed 3 redundant places. [2024-02-07 14:26:47,162 INFO L231 Difference]: Finished difference. Result has 25 places, 0 transitions, 0 flow [2024-02-07 14:26:47,162 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=42, PETRI_DIFFERENCE_MINUEND_PLACES=22, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=20, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=20, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=0, PETRI_PLACES=25, PETRI_TRANSITIONS=0} [2024-02-07 14:26:47,163 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, -4 predicate places. [2024-02-07 14:26:47,163 INFO L495 AbstractCegarLoop]: Abstraction has has 25 places, 0 transitions, 0 flow [2024-02-07 14:26:47,164 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 12.25) internal successors, (49), 4 states have internal predecessors, (49), 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) [2024-02-07 14:26:47,166 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (10 of 11 remaining) [2024-02-07 14:26:47,166 INFO L805 garLoopResultBuilder]: Registering result SAFE for location workerErr0ASSERT_VIOLATIONWITNESS_INVARIANT (9 of 11 remaining) [2024-02-07 14:26:47,167 INFO L805 garLoopResultBuilder]: Registering result SAFE for location workerErr1ASSERT_VIOLATIONERROR_FUNCTION (8 of 11 remaining) [2024-02-07 14:26:47,170 INFO L805 garLoopResultBuilder]: Registering result SAFE for location workerErr2ASSERT_VIOLATIONWITNESS_INVARIANT (7 of 11 remaining) [2024-02-07 14:26:47,170 INFO L805 garLoopResultBuilder]: Registering result SAFE for location workerErr3ASSERT_VIOLATIONWITNESS_INVARIANT (6 of 11 remaining) [2024-02-07 14:26:47,171 INFO L805 garLoopResultBuilder]: Registering result SAFE for location workerErr4ASSERT_VIOLATIONWITNESS_INVARIANT (5 of 11 remaining) [2024-02-07 14:26:47,171 INFO L805 garLoopResultBuilder]: Registering result SAFE for location workerErr0ASSERT_VIOLATIONWITNESS_INVARIANT (4 of 11 remaining) [2024-02-07 14:26:47,171 INFO L805 garLoopResultBuilder]: Registering result SAFE for location workerErr1ASSERT_VIOLATIONERROR_FUNCTION (3 of 11 remaining) [2024-02-07 14:26:47,172 INFO L805 garLoopResultBuilder]: Registering result SAFE for location workerErr2ASSERT_VIOLATIONWITNESS_INVARIANT (2 of 11 remaining) [2024-02-07 14:26:47,172 INFO L805 garLoopResultBuilder]: Registering result SAFE for location workerErr3ASSERT_VIOLATIONWITNESS_INVARIANT (1 of 11 remaining) [2024-02-07 14:26:47,172 INFO L805 garLoopResultBuilder]: Registering result SAFE for location workerErr4ASSERT_VIOLATIONWITNESS_INVARIANT (0 of 11 remaining) [2024-02-07 14:26:47,172 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-02-07 14:26:47,172 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1, 1] [2024-02-07 14:26:47,177 INFO L229 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2024-02-07 14:26:47,177 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2024-02-07 14:26:47,181 INFO L503 ceAbstractionStarter]: Automizer considered 4 witness invariants [2024-02-07 14:26:47,181 INFO L504 ceAbstractionStarter]: WitnessConsidered=4 [2024-02-07 14:26:47,181 INFO L201 PluginConnector]: Adding new model witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 07.02 02:26:47 BasicIcfg [2024-02-07 14:26:47,182 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2024-02-07 14:26:47,184 INFO L158 Benchmark]: Toolchain (without parser) took 2006.88ms. Allocated memory is still 165.7MB. Free memory was 93.4MB in the beginning and 84.9MB in the end (delta: 8.5MB). Peak memory consumption was 6.6MB. Max. memory is 16.1GB. [2024-02-07 14:26:47,185 INFO L158 Benchmark]: CDTParser took 0.15ms. Allocated memory is still 165.7MB. Free memory is still 121.9MB. There was no memory consumed. Max. memory is 16.1GB. [2024-02-07 14:26:47,186 INFO L158 Benchmark]: Witness Parser took 0.13ms. Allocated memory is still 165.7MB. Free memory is still 95.8MB. There was no memory consumed. Max. memory is 16.1GB. [2024-02-07 14:26:47,186 INFO L158 Benchmark]: CACSL2BoogieTranslator took 438.53ms. Allocated memory is still 165.7MB. Free memory was 93.3MB in the beginning and 70.3MB in the end (delta: 23.0MB). Peak memory consumption was 23.1MB. Max. memory is 16.1GB. [2024-02-07 14:26:47,186 INFO L158 Benchmark]: Boogie Procedure Inliner took 31.95ms. Allocated memory is still 165.7MB. Free memory was 70.3MB in the beginning and 68.3MB in the end (delta: 2.0MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2024-02-07 14:26:47,187 INFO L158 Benchmark]: Boogie Preprocessor took 28.74ms. Allocated memory is still 165.7MB. Free memory was 68.3MB in the beginning and 66.1MB in the end (delta: 2.2MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2024-02-07 14:26:47,187 INFO L158 Benchmark]: RCFGBuilder took 530.98ms. Allocated memory is still 165.7MB. Free memory was 66.0MB in the beginning and 112.8MB in the end (delta: -46.8MB). Peak memory consumption was 8.5MB. Max. memory is 16.1GB. [2024-02-07 14:26:47,187 INFO L158 Benchmark]: TraceAbstraction took 972.42ms. Allocated memory is still 165.7MB. Free memory was 112.2MB in the beginning and 84.9MB in the end (delta: 27.3MB). Peak memory consumption was 25.4MB. Max. memory is 16.1GB. [2024-02-07 14:26:47,191 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.15ms. Allocated memory is still 165.7MB. Free memory is still 121.9MB. There was no memory consumed. Max. memory is 16.1GB. * Witness Parser took 0.13ms. Allocated memory is still 165.7MB. Free memory is still 95.8MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 438.53ms. Allocated memory is still 165.7MB. Free memory was 93.3MB in the beginning and 70.3MB in the end (delta: 23.0MB). Peak memory consumption was 23.1MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 31.95ms. Allocated memory is still 165.7MB. Free memory was 70.3MB in the beginning and 68.3MB in the end (delta: 2.0MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 28.74ms. Allocated memory is still 165.7MB. Free memory was 68.3MB in the beginning and 66.1MB in the end (delta: 2.2MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 530.98ms. Allocated memory is still 165.7MB. Free memory was 66.0MB in the beginning and 112.8MB in the end (delta: -46.8MB). Peak memory consumption was 8.5MB. Max. memory is 16.1GB. * TraceAbstraction took 972.42ms. Allocated memory is still 165.7MB. Free memory was 112.2MB in the beginning and 84.9MB in the end (delta: 27.3MB). Peak memory consumption was 25.4MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 689]: invariant of correctness witness holds For all program executions holds that invariant of correctness witness holds at this location - PositiveResult [Line: 19]: a call to reach_error is unreachable For all program executions holds that a call to reach_error is unreachable at this location - PositiveResult [Line: 690]: invariant of correctness witness holds For all program executions holds that invariant of correctness witness holds at this location - PositiveResult [Line: 691]: invariant of correctness witness holds For all program executions holds that invariant of correctness witness holds at this location - PositiveResult [Line: 693]: invariant of correctness witness holds For all program executions holds that invariant of correctness witness holds at this location - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 3 procedures, 53 locations, 11 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: 0.9s, OverallIterations: 3, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.2s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.1s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 90 SdHoareTripleChecker+Valid, 0.1s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 47 mSDsluCounter, 23 SdHoareTripleChecker+Invalid, 0.1s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 7 mSDsCounter, 15 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 136 IncrementalHoareTripleChecker+Invalid, 151 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 15 mSolverCounterUnsat, 16 mSDtfsCounter, 136 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 10 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=59occurred in iteration=0, InterpolantAutomatonStates: 11, 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, 0.3s InterpolantComputationTime, 29 NumberOfCodeBlocks, 29 NumberOfCodeBlocksAsserted, 3 NumberOfCheckSat, 26 ConstructedInterpolants, 0 QuantifiedInterpolants, 47 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 3 InterpolantComputations, 3 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 5 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2024-02-07 14:26:47,214 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: TRUE