./Ultimate.py --spec ../../../trunk/examples/svcomp/properties/unreach-call.prp --file ../../../trunk/examples/svcomp/weaver/parallel-bakery-4.wvr.c --full-output --witness-type correctness_witness --witnessparser.only.consider.loop.invariants false --validate ./goblint.2023-12-19_14-39-08.files/SV-COMP24_unreach-call/parallel-bakery-4.wvr.yml/witness.yml --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 80b1b132 Calling Ultimate with: /root/.sdkman/candidates/java/current/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReachWitnessValidation.xml -i ../../../trunk/examples/svcomp/weaver/parallel-bakery-4.wvr.c ./goblint.2023-12-19_14-39-08.files/SV-COMP24_unreach-call/parallel-bakery-4.wvr.yml/witness.yml -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --traceabstraction.compute.hoare.annotation.of.negated.interpolant.automaton,.abstraction.and.cfg false --witnessparser.only.consider.loop.invariants false --- Real Ultimate output --- This is Ultimate 0.2.4-?-80b1b13-m [2024-01-31 16:59:22,766 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-01-31 16:59:22,828 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-01-31 16:59:22,833 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-01-31 16:59:22,833 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-01-31 16:59:22,857 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-01-31 16:59:22,858 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-01-31 16:59:22,858 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-01-31 16:59:22,859 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-01-31 16:59:22,862 INFO L153 SettingsManager]: * Use memory slicer=true [2024-01-31 16:59:22,862 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-01-31 16:59:22,862 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-01-31 16:59:22,863 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-01-31 16:59:22,864 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-01-31 16:59:22,864 INFO L153 SettingsManager]: * Use SBE=true [2024-01-31 16:59:22,864 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-01-31 16:59:22,865 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-01-31 16:59:22,865 INFO L153 SettingsManager]: * sizeof long=4 [2024-01-31 16:59:22,865 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-01-31 16:59:22,865 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-01-31 16:59:22,865 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-01-31 16:59:22,866 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-01-31 16:59:22,866 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-01-31 16:59:22,866 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-01-31 16:59:22,866 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-01-31 16:59:22,867 INFO L153 SettingsManager]: * sizeof long double=12 [2024-01-31 16:59:22,867 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-01-31 16:59:22,867 INFO L153 SettingsManager]: * Use constant arrays=true [2024-01-31 16:59:22,868 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-01-31 16:59:22,868 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-01-31 16:59:22,868 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-01-31 16:59:22,869 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-01-31 16:59:22,869 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-01-31 16:59:22,869 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-01-31 16:59:22,869 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-01-31 16:59:22,869 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-01-31 16:59:22,870 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-01-31 16:59:22,870 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-01-31 16:59:22,870 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-01-31 16:59:22,870 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-01-31 16:59:22,870 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2024-01-31 16:59:22,871 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-01-31 16:59:22,871 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-01-31 16:59:22,871 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessparser: Only consider loop invariants -> false [2024-01-31 16:59:23,089 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-01-31 16:59:23,110 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-01-31 16:59:23,113 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-01-31 16:59:23,114 INFO L270 PluginConnector]: Initializing CDTParser... [2024-01-31 16:59:23,114 INFO L274 PluginConnector]: CDTParser initialized [2024-01-31 16:59:23,115 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/weaver/parallel-bakery-4.wvr.c [2024-01-31 16:59:24,152 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-01-31 16:59:24,300 INFO L384 CDTParser]: Found 1 translation units. [2024-01-31 16:59:24,301 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/weaver/parallel-bakery-4.wvr.c [2024-01-31 16:59:24,307 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/6d3308746/53ce90e1b33f41c881e301958c47bee1/FLAG5f423e1f2 [2024-01-31 16:59:24,316 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/6d3308746/53ce90e1b33f41c881e301958c47bee1 [2024-01-31 16:59:24,319 INFO L270 PluginConnector]: Initializing Witness Parser... [2024-01-31 16:59:24,323 INFO L274 PluginConnector]: Witness Parser initialized [2024-01-31 16:59:24,323 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/./goblint.2023-12-19_14-39-08.files/SV-COMP24_unreach-call/parallel-bakery-4.wvr.yml/witness.yml [2024-01-31 16:59:24,536 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-01-31 16:59:24,538 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2024-01-31 16:59:24,539 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-01-31 16:59:24,539 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-01-31 16:59:24,542 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-01-31 16:59:24,543 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 31.01 04:59:24" (1/2) ... [2024-01-31 16:59:24,544 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6cb1ff11 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 04:59:24, skipping insertion in model container [2024-01-31 16:59:24,544 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 31.01 04:59:24" (1/2) ... [2024-01-31 16:59:24,546 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@2cb5458a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 04:59:24, skipping insertion in model container [2024-01-31 16:59:24,546 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 31.01 04:59:24" (2/2) ... [2024-01-31 16:59:24,547 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6cb1ff11 and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 31.01 04:59:24, skipping insertion in model container [2024-01-31 16:59:24,547 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 31.01 04:59:24" (2/2) ... [2024-01-31 16:59:24,547 INFO L83 nessWitnessExtractor]: Extracting all invariants from correctness witness [2024-01-31 16:59:24,820 INFO L93 nessWitnessExtractor]: Witness did not contain any usable entries. [2024-01-31 16:59:24,844 INFO L179 MainTranslator]: Built tables and reachable declarations [2024-01-31 16:59:24,998 WARN L239 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/weaver/parallel-bakery-4.wvr.c[8030,8043] [2024-01-31 16:59:25,002 INFO L209 PostProcessor]: Analyzing one entry point: main [2024-01-31 16:59:25,013 INFO L204 MainTranslator]: Completed pre-run [2024-01-31 16:59:25,040 WARN L239 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/weaver/parallel-bakery-4.wvr.c[8030,8043] [2024-01-31 16:59:25,041 INFO L209 PostProcessor]: Analyzing one entry point: main [2024-01-31 16:59:25,052 INFO L208 MainTranslator]: Completed translation [2024-01-31 16:59:25,052 INFO L201 PluginConnector]: Adding new model witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 31.01 04:59:25 WrapperNode [2024-01-31 16:59:25,052 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-01-31 16:59:25,053 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-01-31 16:59:25,053 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-01-31 16:59:25,053 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-01-31 16:59:25,061 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 31.01 04:59:25" (1/1) ... [2024-01-31 16:59:25,068 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 31.01 04:59:25" (1/1) ... [2024-01-31 16:59:25,094 INFO L138 Inliner]: procedures = 23, calls = 176, calls flagged for inlining = 28, calls inlined = 28, statements flattened = 408 [2024-01-31 16:59:25,094 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-01-31 16:59:25,095 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-01-31 16:59:25,095 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-01-31 16:59:25,095 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-01-31 16:59:25,103 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 31.01 04:59:25" (1/1) ... [2024-01-31 16:59:25,107 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 31.01 04:59:25" (1/1) ... [2024-01-31 16:59:25,110 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 31.01 04:59:25" (1/1) ... [2024-01-31 16:59:25,168 INFO L175 MemorySlicer]: Split 10 memory accesses to 5 slices as follows [2, 2, 2, 2, 2]. 20 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2, 0, 0, 0, 0]. The 4 writes are split as follows [0, 1, 1, 1, 1]. [2024-01-31 16:59:25,168 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 31.01 04:59:25" (1/1) ... [2024-01-31 16:59:25,168 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 31.01 04:59:25" (1/1) ... [2024-01-31 16:59:25,175 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 31.01 04:59:25" (1/1) ... [2024-01-31 16:59:25,177 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 31.01 04:59:25" (1/1) ... [2024-01-31 16:59:25,179 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 31.01 04:59:25" (1/1) ... [2024-01-31 16:59:25,180 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 31.01 04:59:25" (1/1) ... [2024-01-31 16:59:25,183 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-01-31 16:59:25,184 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-01-31 16:59:25,184 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-01-31 16:59:25,184 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-01-31 16:59:25,185 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 31.01 04:59:25" (1/1) ... [2024-01-31 16:59:25,200 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-01-31 16:59:25,208 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-01-31 16:59:25,223 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-01-31 16:59:25,237 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-01-31 16:59:25,260 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-01-31 16:59:25,261 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2024-01-31 16:59:25,262 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2024-01-31 16:59:25,262 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2024-01-31 16:59:25,262 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2024-01-31 16:59:25,262 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2024-01-31 16:59:25,262 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2024-01-31 16:59:25,262 INFO L130 BoogieDeclarations]: Found specification of procedure thread4 [2024-01-31 16:59:25,262 INFO L138 BoogieDeclarations]: Found implementation of procedure thread4 [2024-01-31 16:59:25,262 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-01-31 16:59:25,262 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-01-31 16:59:25,263 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2024-01-31 16:59:25,263 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#3 [2024-01-31 16:59:25,263 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#4 [2024-01-31 16:59:25,263 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2024-01-31 16:59:25,263 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-01-31 16:59:25,263 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2024-01-31 16:59:25,264 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#2 [2024-01-31 16:59:25,264 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#3 [2024-01-31 16:59:25,265 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#4 [2024-01-31 16:59:25,265 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2024-01-31 16:59:25,265 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2024-01-31 16:59:25,266 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-01-31 16:59:25,266 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-01-31 16:59:25,266 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2024-01-31 16:59:25,266 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2024-01-31 16:59:25,266 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#2 [2024-01-31 16:59:25,266 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#3 [2024-01-31 16:59:25,266 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#4 [2024-01-31 16:59:25,266 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2024-01-31 16:59:25,268 WARN L214 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2024-01-31 16:59:25,383 INFO L244 CfgBuilder]: Building ICFG [2024-01-31 16:59:25,384 INFO L270 CfgBuilder]: Building CFG for each procedure with an implementation [2024-01-31 16:59:25,795 INFO L289 CfgBuilder]: Ommited future-live optimization because the input is a concurrent program. [2024-01-31 16:59:25,795 INFO L293 CfgBuilder]: Performing block encoding [2024-01-31 16:59:26,017 INFO L315 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-01-31 16:59:26,017 INFO L320 CfgBuilder]: Removed 0 assume(true) statements. [2024-01-31 16:59:26,017 INFO L201 PluginConnector]: Adding new model witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 31.01 04:59:26 BoogieIcfgContainer [2024-01-31 16:59:26,017 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-01-31 16:59:26,019 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-01-31 16:59:26,019 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-01-31 16:59:26,021 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-01-31 16:59:26,021 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 31.01 04:59:24" (1/4) ... [2024-01-31 16:59:26,022 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7657858 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 31.01 04:59:26, skipping insertion in model container [2024-01-31 16:59:26,022 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 31.01 04:59:24" (2/4) ... [2024-01-31 16:59:26,022 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7657858 and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CORRECTNESS_WITNESS 31.01 04:59:26, skipping insertion in model container [2024-01-31 16:59:26,022 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 31.01 04:59:25" (3/4) ... [2024-01-31 16:59:26,022 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7657858 and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CORRECTNESS_WITNESS 31.01 04:59:26, skipping insertion in model container [2024-01-31 16:59:26,022 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 31.01 04:59:26" (4/4) ... [2024-01-31 16:59:26,023 INFO L112 eAbstractionObserver]: Analyzing ICFG parallel-bakery-4.wvr.c [2024-01-31 16:59:26,041 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-01-31 16:59:26,042 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-01-31 16:59:26,042 INFO L518 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-01-31 16:59:26,084 INFO L144 ThreadInstanceAdder]: Constructed 4 joinOtherThreadTransitions. [2024-01-31 16:59:26,112 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 104 places, 91 transitions, 210 flow [2024-01-31 16:59:26,143 INFO L124 PetriNetUnfolderBase]: 0/87 cut-off events. [2024-01-31 16:59:26,144 INFO L125 PetriNetUnfolderBase]: For 4/4 co-relation queries the response was YES. [2024-01-31 16:59:26,145 INFO L83 FinitePrefix]: Finished finitePrefix Result has 104 conditions, 87 events. 0/87 cut-off events. For 4/4 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 209 event pairs, 0 based on Foata normal form. 0/86 useless extension candidates. Maximal degree in co-relation 0. Up to 2 conditions per place. [2024-01-31 16:59:26,145 INFO L82 GeneralOperation]: Start removeDead. Operand has 104 places, 91 transitions, 210 flow [2024-01-31 16:59:26,148 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 99 places, 86 transitions, 196 flow [2024-01-31 16:59:26,156 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-01-31 16:59:26,162 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;@5715934a, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-01-31 16:59:26,162 INFO L358 AbstractCegarLoop]: Starting to check reachability of 5 error locations. [2024-01-31 16:59:26,196 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-01-31 16:59:26,196 INFO L124 PetriNetUnfolderBase]: 0/85 cut-off events. [2024-01-31 16:59:26,196 INFO L125 PetriNetUnfolderBase]: For 4/4 co-relation queries the response was YES. [2024-01-31 16:59:26,196 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-31 16:59:26,197 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-01-31 16:59:26,197 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2024-01-31 16:59:26,204 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-31 16:59:26,204 INFO L85 PathProgramCache]: Analyzing trace with hash 586426824, now seen corresponding path program 1 times [2024-01-31 16:59:26,211 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-31 16:59:26,211 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1158429850] [2024-01-31 16:59:26,211 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-31 16:59:26,212 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-31 16:59:26,409 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-31 16:59:27,059 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-31 16:59:27,060 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-31 16:59:27,060 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1158429850] [2024-01-31 16:59:27,061 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1158429850] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-31 16:59:27,061 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-31 16:59:27,061 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-01-31 16:59:27,062 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1398622427] [2024-01-31 16:59:27,063 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-31 16:59:27,070 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-01-31 16:59:27,074 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-31 16:59:27,093 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-01-31 16:59:27,094 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=91, Unknown=0, NotChecked=0, Total=110 [2024-01-31 16:59:27,135 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 33 out of 91 [2024-01-31 16:59:27,141 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 99 places, 86 transitions, 196 flow. Second operand has 11 states, 11 states have (on average 38.18181818181818) internal successors, (420), 11 states have internal predecessors, (420), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-31 16:59:27,141 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-31 16:59:27,141 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 33 of 91 [2024-01-31 16:59:27,142 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-31 16:59:39,326 INFO L124 PetriNetUnfolderBase]: 133004/192623 cut-off events. [2024-01-31 16:59:39,327 INFO L125 PetriNetUnfolderBase]: For 6659/6659 co-relation queries the response was YES. [2024-01-31 16:59:39,689 INFO L83 FinitePrefix]: Finished finitePrefix Result has 377630 conditions, 192623 events. 133004/192623 cut-off events. For 6659/6659 co-relation queries the response was YES. Maximal size of possible extension queue 5156. Compared 1557027 event pairs, 45563 based on Foata normal form. 1/192053 useless extension candidates. Maximal degree in co-relation 340428. Up to 68429 conditions per place. [2024-01-31 16:59:40,309 INFO L140 encePairwiseOnDemand]: 81/91 looper letters, 328 selfloop transitions, 25 changer transitions 33/415 dead transitions. [2024-01-31 16:59:40,309 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 112 places, 415 transitions, 1755 flow [2024-01-31 16:59:40,310 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2024-01-31 16:59:40,312 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2024-01-31 16:59:40,318 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 849 transitions. [2024-01-31 16:59:40,321 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6664050235478807 [2024-01-31 16:59:40,323 INFO L175 Difference]: Start difference. First operand has 99 places, 86 transitions, 196 flow. Second operand 14 states and 849 transitions. [2024-01-31 16:59:40,323 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 112 places, 415 transitions, 1755 flow [2024-01-31 16:59:40,453 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 104 places, 415 transitions, 1653 flow, removed 0 selfloop flow, removed 8 redundant places. [2024-01-31 16:59:40,457 INFO L231 Difference]: Finished difference. Result has 109 places, 115 transitions, 335 flow [2024-01-31 16:59:40,459 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=91, PETRI_DIFFERENCE_MINUEND_FLOW=180, PETRI_DIFFERENCE_MINUEND_PLACES=91, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=86, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=78, PETRI_DIFFERENCE_SUBTRAHEND_STATES=14, PETRI_FLOW=335, PETRI_PLACES=109, PETRI_TRANSITIONS=115} [2024-01-31 16:59:40,462 INFO L281 CegarLoopForPetriNet]: 99 programPoint places, 10 predicate places. [2024-01-31 16:59:40,462 INFO L495 AbstractCegarLoop]: Abstraction has has 109 places, 115 transitions, 335 flow [2024-01-31 16:59:40,463 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 38.18181818181818) internal successors, (420), 11 states have internal predecessors, (420), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-31 16:59:40,463 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-31 16:59:40,463 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-01-31 16:59:40,464 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-01-31 16:59:40,464 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2024-01-31 16:59:40,464 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-31 16:59:40,465 INFO L85 PathProgramCache]: Analyzing trace with hash 975593174, now seen corresponding path program 2 times [2024-01-31 16:59:40,465 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-31 16:59:40,465 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [431353652] [2024-01-31 16:59:40,465 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-31 16:59:40,465 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-31 16:59:40,494 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-31 16:59:41,239 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-31 16:59:41,240 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-31 16:59:41,240 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [431353652] [2024-01-31 16:59:41,241 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [431353652] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-31 16:59:41,241 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-31 16:59:41,241 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-01-31 16:59:41,242 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1932517148] [2024-01-31 16:59:41,243 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-31 16:59:41,244 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-01-31 16:59:41,244 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-31 16:59:41,245 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-01-31 16:59:41,245 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2024-01-31 16:59:41,317 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 28 out of 91 [2024-01-31 16:59:41,318 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 109 places, 115 transitions, 335 flow. Second operand has 9 states, 9 states have (on average 34.888888888888886) internal successors, (314), 9 states have internal predecessors, (314), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-31 16:59:41,318 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-31 16:59:41,319 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 28 of 91 [2024-01-31 16:59:41,319 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand