./Ultimate.py --spec ../../../trunk/examples/svcomp/properties/unreach-call.prp --file ../../../trunk/examples/svcomp/weaver/popl20-bad-counter-queue.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/popl20-bad-counter-queue.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/popl20-bad-counter-queue.wvr.c ./goblint.2023-12-19_14-39-08.files/SV-COMP24_unreach-call/popl20-bad-counter-queue.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 17:43:21,124 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-01-31 17:43:21,208 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-01-31 17:43:21,217 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-01-31 17:43:21,217 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-01-31 17:43:21,238 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-01-31 17:43:21,239 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-01-31 17:43:21,240 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-01-31 17:43:21,240 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-01-31 17:43:21,241 INFO L153 SettingsManager]: * Use memory slicer=true [2024-01-31 17:43:21,241 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-01-31 17:43:21,241 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-01-31 17:43:21,242 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-01-31 17:43:21,242 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-01-31 17:43:21,242 INFO L153 SettingsManager]: * Use SBE=true [2024-01-31 17:43:21,243 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-01-31 17:43:21,243 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-01-31 17:43:21,243 INFO L153 SettingsManager]: * sizeof long=4 [2024-01-31 17:43:21,243 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-01-31 17:43:21,244 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-01-31 17:43:21,244 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-01-31 17:43:21,245 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-01-31 17:43:21,245 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-01-31 17:43:21,245 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-01-31 17:43:21,246 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-01-31 17:43:21,246 INFO L153 SettingsManager]: * sizeof long double=12 [2024-01-31 17:43:21,246 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-01-31 17:43:21,247 INFO L153 SettingsManager]: * Use constant arrays=true [2024-01-31 17:43:21,247 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-01-31 17:43:21,247 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-01-31 17:43:21,248 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-01-31 17:43:21,249 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-01-31 17:43:21,249 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-01-31 17:43:21,249 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-01-31 17:43:21,249 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-01-31 17:43:21,250 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-01-31 17:43:21,250 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-01-31 17:43:21,250 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-01-31 17:43:21,250 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-01-31 17:43:21,250 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-01-31 17:43:21,251 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2024-01-31 17:43:21,251 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-01-31 17:43:21,251 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-01-31 17:43:21,251 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessparser: Only consider loop invariants -> false [2024-01-31 17:43:21,431 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-01-31 17:43:21,457 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-01-31 17:43:21,459 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-01-31 17:43:21,459 INFO L270 PluginConnector]: Initializing CDTParser... [2024-01-31 17:43:21,460 INFO L274 PluginConnector]: CDTParser initialized [2024-01-31 17:43:21,462 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/weaver/popl20-bad-counter-queue.wvr.c [2024-01-31 17:43:22,649 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-01-31 17:43:22,811 INFO L384 CDTParser]: Found 1 translation units. [2024-01-31 17:43:22,812 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/weaver/popl20-bad-counter-queue.wvr.c [2024-01-31 17:43:22,817 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e2f1df3a4/b1303f8a48e142a09b7f6cfbc7b12400/FLAGc8d4e5d79 [2024-01-31 17:43:22,827 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e2f1df3a4/b1303f8a48e142a09b7f6cfbc7b12400 [2024-01-31 17:43:22,829 INFO L270 PluginConnector]: Initializing Witness Parser... [2024-01-31 17:43:22,830 INFO L274 PluginConnector]: Witness Parser initialized [2024-01-31 17:43:22,830 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/./goblint.2023-12-19_14-39-08.files/SV-COMP24_unreach-call/popl20-bad-counter-queue.wvr.yml/witness.yml [2024-01-31 17:43:22,937 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-01-31 17:43:22,938 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2024-01-31 17:43:22,940 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-01-31 17:43:22,940 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-01-31 17:43:22,945 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-01-31 17:43:22,945 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 31.01 05:43:22" (1/2) ... [2024-01-31 17:43:22,946 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5f663a23 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 05:43:22, skipping insertion in model container [2024-01-31 17:43:22,946 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 31.01 05:43:22" (1/2) ... [2024-01-31 17:43:22,948 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@2b2e7b7c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 05:43:22, skipping insertion in model container [2024-01-31 17:43:22,948 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 31.01 05:43:22" (2/2) ... [2024-01-31 17:43:22,948 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5f663a23 and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 31.01 05:43:22, skipping insertion in model container [2024-01-31 17:43:22,948 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 31.01 05:43:22" (2/2) ... [2024-01-31 17:43:22,950 INFO L83 nessWitnessExtractor]: Extracting all invariants from correctness witness [2024-01-31 17:43:22,987 INFO L96 nessWitnessExtractor]: Found the following entries in the witness: [2024-01-31 17:43:22,989 INFO L98 nessWitnessExtractor]: Location invariant after [L51-L51] ((unsigned long )_argptr == 0UL) && ((((((((((5 <= i && i <= 2147483646) && i != 0) && i != 1) && i != 2) && i != 3) || i == 4) || i == 3) || i == 2) || i == 1) || (0 == i && i == 0)) [2024-01-31 17:43:22,989 INFO L98 nessWitnessExtractor]: Location invariant after [L64-L64] ((unsigned long )_argptr == 0UL) && (((((i == 1 || (0 == i && i == 0)) || (((((5 <= i && i <= 2147483646) && i != 0) && i != 1) && i != 2) && i != 3)) || i == 4) || i == 3) || i == 2) [2024-01-31 17:43:23,009 INFO L179 MainTranslator]: Built tables and reachable declarations [2024-01-31 17:43:23,194 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/popl20-bad-counter-queue.wvr.c[2454,2467] [2024-01-31 17:43:23,203 INFO L209 PostProcessor]: Analyzing one entry point: main [2024-01-31 17:43:23,221 INFO L204 MainTranslator]: Completed pre-run [2024-01-31 17:43:23,233 WARN L424 MainDispatcher]: Unable to annotate int with a witness entry [2024-01-31 17:43:23,234 WARN L424 MainDispatcher]: Unable to annotate int with a witness entry [2024-01-31 17:43:23,238 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/popl20-bad-counter-queue.wvr.c[2454,2467] [2024-01-31 17:43:23,242 INFO L209 PostProcessor]: Analyzing one entry point: main [2024-01-31 17:43:23,258 INFO L208 MainTranslator]: Completed translation [2024-01-31 17:43:23,258 INFO L201 PluginConnector]: Adding new model witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 31.01 05:43:23 WrapperNode [2024-01-31 17:43:23,259 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-01-31 17:43:23,259 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-01-31 17:43:23,260 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-01-31 17:43:23,260 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-01-31 17:43:23,265 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 05:43:23" (1/1) ... [2024-01-31 17:43:23,280 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 05:43:23" (1/1) ... [2024-01-31 17:43:23,305 INFO L138 Inliner]: procedures = 26, calls = 40, calls flagged for inlining = 12, calls inlined = 12, statements flattened = 150 [2024-01-31 17:43:23,319 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-01-31 17:43:23,320 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-01-31 17:43:23,320 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-01-31 17:43:23,320 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-01-31 17:43:23,329 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 05:43:23" (1/1) ... [2024-01-31 17:43:23,329 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 05:43:23" (1/1) ... [2024-01-31 17:43:23,341 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 05:43:23" (1/1) ... [2024-01-31 17:43:23,354 INFO L175 MemorySlicer]: Split 9 memory accesses to 4 slices as follows [2, 2, 2, 3]. 33 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2, 0, 0, 0]. The 3 writes are split as follows [0, 1, 1, 1]. [2024-01-31 17:43:23,361 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 31.01 05:43:23" (1/1) ... [2024-01-31 17:43:23,361 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 31.01 05:43:23" (1/1) ... [2024-01-31 17:43:23,366 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 31.01 05:43:23" (1/1) ... [2024-01-31 17:43:23,376 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 05:43:23" (1/1) ... [2024-01-31 17:43:23,377 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 05:43:23" (1/1) ... [2024-01-31 17:43:23,378 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 05:43:23" (1/1) ... [2024-01-31 17:43:23,386 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-01-31 17:43:23,387 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-01-31 17:43:23,387 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-01-31 17:43:23,387 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-01-31 17:43:23,388 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 05:43:23" (1/1) ... [2024-01-31 17:43:23,397 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-01-31 17:43:23,407 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-01-31 17:43:23,419 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 17:43:23,477 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 17:43:23,507 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-01-31 17:43:23,507 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2024-01-31 17:43:23,507 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-01-31 17:43:23,507 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2024-01-31 17:43:23,508 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#2 [2024-01-31 17:43:23,508 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#3 [2024-01-31 17:43:23,509 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2024-01-31 17:43:23,509 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2024-01-31 17:43:23,509 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#2 [2024-01-31 17:43:23,509 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#3 [2024-01-31 17:43:23,509 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2024-01-31 17:43:23,510 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2024-01-31 17:43:23,510 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2024-01-31 17:43:23,510 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2024-01-31 17:43:23,511 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-01-31 17:43:23,512 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-01-31 17:43:23,512 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2024-01-31 17:43:23,512 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#3 [2024-01-31 17:43:23,512 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2024-01-31 17:43:23,513 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2024-01-31 17:43:23,513 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2024-01-31 17:43:23,513 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-01-31 17:43:23,513 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-01-31 17:43:23,513 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2024-01-31 17:43:23,515 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 17:43:23,629 INFO L244 CfgBuilder]: Building ICFG [2024-01-31 17:43:23,631 INFO L270 CfgBuilder]: Building CFG for each procedure with an implementation [2024-01-31 17:43:23,874 INFO L289 CfgBuilder]: Ommited future-live optimization because the input is a concurrent program. [2024-01-31 17:43:23,874 INFO L293 CfgBuilder]: Performing block encoding [2024-01-31 17:43:24,049 INFO L315 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-01-31 17:43:24,050 INFO L320 CfgBuilder]: Removed 3 assume(true) statements. [2024-01-31 17:43:24,050 INFO L201 PluginConnector]: Adding new model witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 31.01 05:43:24 BoogieIcfgContainer [2024-01-31 17:43:24,050 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-01-31 17:43:24,052 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-01-31 17:43:24,052 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-01-31 17:43:24,059 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-01-31 17:43:24,059 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 31.01 05:43:22" (1/4) ... [2024-01-31 17:43:24,059 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3d30ce2d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 31.01 05:43:24, skipping insertion in model container [2024-01-31 17:43:24,059 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 31.01 05:43:22" (2/4) ... [2024-01-31 17:43:24,060 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3d30ce2d and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CORRECTNESS_WITNESS 31.01 05:43:24, skipping insertion in model container [2024-01-31 17:43:24,060 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 05:43:23" (3/4) ... [2024-01-31 17:43:24,062 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3d30ce2d and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CORRECTNESS_WITNESS 31.01 05:43:24, skipping insertion in model container [2024-01-31 17:43:24,063 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 31.01 05:43:24" (4/4) ... [2024-01-31 17:43:24,064 INFO L112 eAbstractionObserver]: Analyzing ICFG popl20-bad-counter-queue.wvr.c [2024-01-31 17:43:24,078 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-01-31 17:43:24,078 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-01-31 17:43:24,078 INFO L518 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-01-31 17:43:24,118 INFO L144 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2024-01-31 17:43:24,151 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 31 places, 27 transitions, 68 flow [2024-01-31 17:43:24,176 INFO L124 PetriNetUnfolderBase]: 3/25 cut-off events. [2024-01-31 17:43:24,176 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2024-01-31 17:43:24,179 INFO L83 FinitePrefix]: Finished finitePrefix Result has 34 conditions, 25 events. 3/25 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 32 event pairs, 0 based on Foata normal form. 0/21 useless extension candidates. Maximal degree in co-relation 17. Up to 2 conditions per place. [2024-01-31 17:43:24,179 INFO L82 GeneralOperation]: Start removeDead. Operand has 31 places, 27 transitions, 68 flow [2024-01-31 17:43:24,181 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 28 places, 24 transitions, 60 flow [2024-01-31 17:43:24,190 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-01-31 17:43:24,196 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;@2724fb9c, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-01-31 17:43:24,196 INFO L358 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2024-01-31 17:43:24,208 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-01-31 17:43:24,210 INFO L124 PetriNetUnfolderBase]: 3/23 cut-off events. [2024-01-31 17:43:24,211 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2024-01-31 17:43:24,211 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-31 17:43:24,211 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-01-31 17:43:24,212 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-01-31 17:43:24,216 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-31 17:43:24,216 INFO L85 PathProgramCache]: Analyzing trace with hash 745609022, now seen corresponding path program 1 times [2024-01-31 17:43:24,224 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-31 17:43:24,225 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1161302765] [2024-01-31 17:43:24,225 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-31 17:43:24,225 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-31 17:43:24,439 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-31 17:43:24,575 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 17:43:24,576 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-31 17:43:24,576 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1161302765] [2024-01-31 17:43:24,577 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1161302765] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-31 17:43:24,578 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-31 17:43:24,578 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-01-31 17:43:24,579 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [453392475] [2024-01-31 17:43:24,580 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-31 17:43:24,586 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-01-31 17:43:24,598 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-31 17:43:24,616 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-01-31 17:43:24,617 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-01-31 17:43:24,623 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 27 [2024-01-31 17:43:24,625 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 28 places, 24 transitions, 60 flow. Second operand has 3 states, 3 states have (on average 9.666666666666666) internal successors, (29), 3 states have internal predecessors, (29), 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 17:43:24,625 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-31 17:43:24,625 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 27 [2024-01-31 17:43:24,626 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-31 17:43:24,728 INFO L124 PetriNetUnfolderBase]: 156/298 cut-off events. [2024-01-31 17:43:24,728 INFO L125 PetriNetUnfolderBase]: For 26/26 co-relation queries the response was YES. [2024-01-31 17:43:24,730 INFO L83 FinitePrefix]: Finished finitePrefix Result has 606 conditions, 298 events. 156/298 cut-off events. For 26/26 co-relation queries the response was YES. Maximal size of possible extension queue 24. Compared 1132 event pairs, 45 based on Foata normal form. 1/297 useless extension candidates. Maximal degree in co-relation 502. Up to 179 conditions per place. [2024-01-31 17:43:24,733 INFO L140 encePairwiseOnDemand]: 23/27 looper letters, 31 selfloop transitions, 3 changer transitions 1/38 dead transitions. [2024-01-31 17:43:24,733 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 30 places, 38 transitions, 167 flow [2024-01-31 17:43:24,734 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-01-31 17:43:24,736 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-01-31 17:43:24,740 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 51 transitions. [2024-01-31 17:43:24,742 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6296296296296297 [2024-01-31 17:43:24,743 INFO L175 Difference]: Start difference. First operand has 28 places, 24 transitions, 60 flow. Second operand 3 states and 51 transitions. [2024-01-31 17:43:24,743 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 30 places, 38 transitions, 167 flow [2024-01-31 17:43:24,745 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 26 places, 38 transitions, 153 flow, removed 0 selfloop flow, removed 4 redundant places. [2024-01-31 17:43:24,747 INFO L231 Difference]: Finished difference. Result has 27 places, 26 transitions, 71 flow [2024-01-31 17:43:24,748 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=27, PETRI_DIFFERENCE_MINUEND_FLOW=52, PETRI_DIFFERENCE_MINUEND_PLACES=24, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=24, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=21, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=71, PETRI_PLACES=27, PETRI_TRANSITIONS=26} [2024-01-31 17:43:24,750 INFO L281 CegarLoopForPetriNet]: 28 programPoint places, -1 predicate places. [2024-01-31 17:43:24,751 INFO L495 AbstractCegarLoop]: Abstraction has has 27 places, 26 transitions, 71 flow [2024-01-31 17:43:24,751 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 9.666666666666666) internal successors, (29), 3 states have internal predecessors, (29), 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 17:43:24,751 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-31 17:43:24,751 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-01-31 17:43:24,751 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-01-31 17:43:24,752 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-01-31 17:43:24,752 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-31 17:43:24,752 INFO L85 PathProgramCache]: Analyzing trace with hash -1361035497, now seen corresponding path program 1 times [2024-01-31 17:43:24,754 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-31 17:43:24,754 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1221871502] [2024-01-31 17:43:24,754 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-31 17:43:24,754 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-31 17:43:24,780 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-31 17:43:24,939 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-31 17:43:24,940 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-31 17:43:24,940 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1221871502] [2024-01-31 17:43:24,941 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1221871502] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-31 17:43:24,941 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-31 17:43:24,941 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-01-31 17:43:24,941 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [451535596] [2024-01-31 17:43:24,941 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-31 17:43:24,942 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-01-31 17:43:24,943 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-31 17:43:24,944 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-01-31 17:43:24,944 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-01-31 17:43:24,954 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 27 [2024-01-31 17:43:24,955 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 27 places, 26 transitions, 71 flow. Second operand has 5 states, 5 states have (on average 9.4) internal successors, (47), 5 states have internal predecessors, (47), 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 17:43:24,955 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-31 17:43:24,955 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 27 [2024-01-31 17:43:24,956 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-31 17:43:25,128 INFO L124 PetriNetUnfolderBase]: 221/451 cut-off events. [2024-01-31 17:43:25,128 INFO L125 PetriNetUnfolderBase]: For 8/8 co-relation queries the response was YES. [2024-01-31 17:43:25,130 INFO L83 FinitePrefix]: Finished finitePrefix Result has 919 conditions, 451 events. 221/451 cut-off events. For 8/8 co-relation queries the response was YES. Maximal size of possible extension queue 35. Compared 2073 event pairs, 141 based on Foata normal form. 0/419 useless extension candidates. Maximal degree in co-relation 406. Up to 261 conditions per place. [2024-01-31 17:43:25,132 INFO L140 encePairwiseOnDemand]: 21/27 looper letters, 38 selfloop transitions, 5 changer transitions 0/49 dead transitions. [2024-01-31 17:43:25,132 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 31 places, 49 transitions, 210 flow [2024-01-31 17:43:25,132 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-01-31 17:43:25,133 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-01-31 17:43:25,133 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 74 transitions. [2024-01-31 17:43:25,134 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5481481481481482 [2024-01-31 17:43:25,134 INFO L175 Difference]: Start difference. First operand has 27 places, 26 transitions, 71 flow. Second operand 5 states and 74 transitions. [2024-01-31 17:43:25,134 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 31 places, 49 transitions, 210 flow [2024-01-31 17:43:25,135 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 30 places, 49 transitions, 207 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-01-31 17:43:25,135 INFO L231 Difference]: Finished difference. Result has 33 places, 30 transitions, 104 flow [2024-01-31 17:43:25,136 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=27, PETRI_DIFFERENCE_MINUEND_FLOW=68, PETRI_DIFFERENCE_MINUEND_PLACES=26, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=26, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=21, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=104, PETRI_PLACES=33, PETRI_TRANSITIONS=30} [2024-01-31 17:43:25,136 INFO L281 CegarLoopForPetriNet]: 28 programPoint places, 5 predicate places. [2024-01-31 17:43:25,136 INFO L495 AbstractCegarLoop]: Abstraction has has 33 places, 30 transitions, 104 flow [2024-01-31 17:43:25,137 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 9.4) internal successors, (47), 5 states have internal predecessors, (47), 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 17:43:25,137 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-31 17:43:25,137 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-01-31 17:43:25,137 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-01-31 17:43:25,137 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-01-31 17:43:25,138 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-31 17:43:25,138 INFO L85 PathProgramCache]: Analyzing trace with hash -991576211, now seen corresponding path program 1 times [2024-01-31 17:43:25,138 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-31 17:43:25,138 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2027104061] [2024-01-31 17:43:25,139 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-31 17:43:25,139 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-31 17:43:25,192 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-31 17:43:25,265 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-31 17:43:25,267 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-31 17:43:25,267 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2027104061] [2024-01-31 17:43:25,267 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2027104061] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-31 17:43:25,268 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-31 17:43:25,268 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-01-31 17:43:25,268 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1274381413] [2024-01-31 17:43:25,268 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-31 17:43:25,268 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-01-31 17:43:25,269 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-31 17:43:25,269 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-01-31 17:43:25,270 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-01-31 17:43:25,276 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 27 [2024-01-31 17:43:25,276 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 33 places, 30 transitions, 104 flow. Second operand has 5 states, 5 states have (on average 9.4) internal successors, (47), 5 states have internal predecessors, (47), 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 17:43:25,277 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-31 17:43:25,277 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 27 [2024-01-31 17:43:25,277 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-31 17:43:25,370 INFO L124 PetriNetUnfolderBase]: 181/356 cut-off events. [2024-01-31 17:43:25,370 INFO L125 PetriNetUnfolderBase]: For 89/107 co-relation queries the response was YES. [2024-01-31 17:43:25,371 INFO L83 FinitePrefix]: Finished finitePrefix Result has 815 conditions, 356 events. 181/356 cut-off events. For 89/107 co-relation queries the response was YES. Maximal size of possible extension queue 26. Compared 1440 event pairs, 133 based on Foata normal form. 0/329 useless extension candidates. Maximal degree in co-relation 650. Up to 269 conditions per place. [2024-01-31 17:43:25,372 INFO L140 encePairwiseOnDemand]: 21/27 looper letters, 19 selfloop transitions, 2 changer transitions 17/44 dead transitions. [2024-01-31 17:43:25,372 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 37 places, 44 transitions, 221 flow [2024-01-31 17:43:25,373 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-01-31 17:43:25,373 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-01-31 17:43:25,373 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 69 transitions. [2024-01-31 17:43:25,373 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5111111111111111 [2024-01-31 17:43:25,373 INFO L175 Difference]: Start difference. First operand has 33 places, 30 transitions, 104 flow. Second operand 5 states and 69 transitions. [2024-01-31 17:43:25,374 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 37 places, 44 transitions, 221 flow [2024-01-31 17:43:25,374 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 36 places, 44 transitions, 217 flow, removed 1 selfloop flow, removed 1 redundant places. [2024-01-31 17:43:25,375 INFO L231 Difference]: Finished difference. Result has 38 places, 27 transitions, 92 flow [2024-01-31 17:43:25,375 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=27, PETRI_DIFFERENCE_MINUEND_FLOW=100, PETRI_DIFFERENCE_MINUEND_PLACES=32, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=30, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=28, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=92, PETRI_PLACES=38, PETRI_TRANSITIONS=27} [2024-01-31 17:43:25,376 INFO L281 CegarLoopForPetriNet]: 28 programPoint places, 10 predicate places. [2024-01-31 17:43:25,376 INFO L495 AbstractCegarLoop]: Abstraction has has 38 places, 27 transitions, 92 flow [2024-01-31 17:43:25,376 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 9.4) internal successors, (47), 5 states have internal predecessors, (47), 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 17:43:25,376 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-31 17:43:25,376 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] [2024-01-31 17:43:25,376 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-01-31 17:43:25,376 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-01-31 17:43:25,377 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-31 17:43:25,377 INFO L85 PathProgramCache]: Analyzing trace with hash -286812489, now seen corresponding path program 1 times [2024-01-31 17:43:25,377 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-31 17:43:25,377 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [259037240] [2024-01-31 17:43:25,377 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-31 17:43:25,377 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-31 17:43:25,403 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-31 17:43:25,522 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-01-31 17:43:25,522 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-31 17:43:25,522 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [259037240] [2024-01-31 17:43:25,522 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [259037240] provided 0 perfect and 1 imperfect interpolant sequences [2024-01-31 17:43:25,522 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [229118366] [2024-01-31 17:43:25,523 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-31 17:43:25,523 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-01-31 17:43:25,523 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-01-31 17:43:25,541 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-01-31 17:43:25,560 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-01-31 17:43:25,623 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-31 17:43:25,625 INFO L262 TraceCheckSpWp]: Trace formula consists of 168 conjuncts, 6 conjunts are in the unsatisfiable core [2024-01-31 17:43:25,630 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-01-31 17:43:25,690 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-01-31 17:43:25,691 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-01-31 17:43:25,725 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-01-31 17:43:25,726 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [229118366] provided 1 perfect and 1 imperfect interpolant sequences [2024-01-31 17:43:25,726 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2024-01-31 17:43:25,727 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4, 4] total 8 [2024-01-31 17:43:25,727 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [40039068] [2024-01-31 17:43:25,727 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-31 17:43:25,728 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-01-31 17:43:25,729 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-31 17:43:25,730 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-01-31 17:43:25,731 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=46, Unknown=0, NotChecked=0, Total=72 [2024-01-31 17:43:25,734 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 27 [2024-01-31 17:43:25,735 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 38 places, 27 transitions, 92 flow. Second operand has 5 states, 5 states have (on average 9.4) internal successors, (47), 5 states have internal predecessors, (47), 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 17:43:25,735 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-31 17:43:25,736 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 27 [2024-01-31 17:43:25,736 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-31 17:43:25,823 INFO L124 PetriNetUnfolderBase]: 154/296 cut-off events. [2024-01-31 17:43:25,823 INFO L125 PetriNetUnfolderBase]: For 64/82 co-relation queries the response was YES. [2024-01-31 17:43:25,824 INFO L83 FinitePrefix]: Finished finitePrefix Result has 717 conditions, 296 events. 154/296 cut-off events. For 64/82 co-relation queries the response was YES. Maximal size of possible extension queue 24. Compared 1175 event pairs, 44 based on Foata normal form. 0/280 useless extension candidates. Maximal degree in co-relation 700. Up to 151 conditions per place. [2024-01-31 17:43:25,825 INFO L140 encePairwiseOnDemand]: 21/27 looper letters, 24 selfloop transitions, 5 changer transitions 0/35 dead transitions. [2024-01-31 17:43:25,826 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 38 places, 35 transitions, 173 flow [2024-01-31 17:43:25,826 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-01-31 17:43:25,826 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-01-31 17:43:25,828 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 60 transitions. [2024-01-31 17:43:25,828 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4444444444444444 [2024-01-31 17:43:25,828 INFO L175 Difference]: Start difference. First operand has 38 places, 27 transitions, 92 flow. Second operand 5 states and 60 transitions. [2024-01-31 17:43:25,828 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 38 places, 35 transitions, 173 flow [2024-01-31 17:43:25,829 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 32 places, 35 transitions, 149 flow, removed 10 selfloop flow, removed 6 redundant places. [2024-01-31 17:43:25,830 INFO L231 Difference]: Finished difference. Result has 34 places, 28 transitions, 97 flow [2024-01-31 17:43:25,830 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=27, PETRI_DIFFERENCE_MINUEND_FLOW=74, PETRI_DIFFERENCE_MINUEND_PLACES=28, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=27, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=22, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=97, PETRI_PLACES=34, PETRI_TRANSITIONS=28} [2024-01-31 17:43:25,832 INFO L281 CegarLoopForPetriNet]: 28 programPoint places, 6 predicate places. [2024-01-31 17:43:25,832 INFO L495 AbstractCegarLoop]: Abstraction has has 34 places, 28 transitions, 97 flow [2024-01-31 17:43:25,832 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 9.4) internal successors, (47), 5 states have internal predecessors, (47), 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 17:43:25,832 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-31 17:43:25,832 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] [2024-01-31 17:43:25,857 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2024-01-31 17:43:26,044 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-01-31 17:43:26,044 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-01-31 17:43:26,045 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-31 17:43:26,045 INFO L85 PathProgramCache]: Analyzing trace with hash 2110500781, now seen corresponding path program 1 times [2024-01-31 17:43:26,045 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-31 17:43:26,045 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [617316189] [2024-01-31 17:43:26,046 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-31 17:43:26,046 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-31 17:43:26,067 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-31 17:43:26,146 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-01-31 17:43:26,147 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-31 17:43:26,147 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [617316189] [2024-01-31 17:43:26,149 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [617316189] provided 0 perfect and 1 imperfect interpolant sequences [2024-01-31 17:43:26,149 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2110215555] [2024-01-31 17:43:26,150 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-31 17:43:26,150 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-01-31 17:43:26,155 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-01-31 17:43:26,162 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-01-31 17:43:26,188 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-01-31 17:43:26,244 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-31 17:43:26,246 INFO L262 TraceCheckSpWp]: Trace formula consists of 168 conjuncts, 6 conjunts are in the unsatisfiable core [2024-01-31 17:43:26,247 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-01-31 17:43:26,277 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-01-31 17:43:26,277 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-01-31 17:43:26,303 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-01-31 17:43:26,303 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2110215555] provided 1 perfect and 1 imperfect interpolant sequences [2024-01-31 17:43:26,303 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2024-01-31 17:43:26,303 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4, 4] total 8 [2024-01-31 17:43:26,304 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [401370562] [2024-01-31 17:43:26,304 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-31 17:43:26,304 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-01-31 17:43:26,304 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-31 17:43:26,305 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-01-31 17:43:26,305 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=46, Unknown=0, NotChecked=0, Total=72 [2024-01-31 17:43:26,309 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 27 [2024-01-31 17:43:26,309 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 34 places, 28 transitions, 97 flow. Second operand has 5 states, 5 states have (on average 9.4) internal successors, (47), 5 states have internal predecessors, (47), 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 17:43:26,309 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-31 17:43:26,309 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 27 [2024-01-31 17:43:26,309 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-31 17:43:26,365 INFO L124 PetriNetUnfolderBase]: 146/275 cut-off events. [2024-01-31 17:43:26,365 INFO L125 PetriNetUnfolderBase]: For 123/123 co-relation queries the response was YES. [2024-01-31 17:43:26,366 INFO L83 FinitePrefix]: Finished finitePrefix Result has 667 conditions, 275 events. 146/275 cut-off events. For 123/123 co-relation queries the response was YES. Maximal size of possible extension queue 23. Compared 1034 event pairs, 39 based on Foata normal form. 0/254 useless extension candidates. Maximal degree in co-relation 646. Up to 142 conditions per place. [2024-01-31 17:43:26,367 INFO L140 encePairwiseOnDemand]: 21/27 looper letters, 24 selfloop transitions, 5 changer transitions 0/36 dead transitions. [2024-01-31 17:43:26,367 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 38 places, 36 transitions, 182 flow [2024-01-31 17:43:26,367 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-01-31 17:43:26,367 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-01-31 17:43:26,368 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 60 transitions. [2024-01-31 17:43:26,368 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4444444444444444 [2024-01-31 17:43:26,368 INFO L175 Difference]: Start difference. First operand has 34 places, 28 transitions, 97 flow. Second operand 5 states and 60 transitions. [2024-01-31 17:43:26,368 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 38 places, 36 transitions, 182 flow [2024-01-31 17:43:26,369 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 35 places, 36 transitions, 174 flow, removed 0 selfloop flow, removed 3 redundant places. [2024-01-31 17:43:26,369 INFO L231 Difference]: Finished difference. Result has 37 places, 29 transitions, 114 flow [2024-01-31 17:43:26,370 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=27, PETRI_DIFFERENCE_MINUEND_FLOW=91, PETRI_DIFFERENCE_MINUEND_PLACES=31, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=28, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=23, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=114, PETRI_PLACES=37, PETRI_TRANSITIONS=29} [2024-01-31 17:43:26,370 INFO L281 CegarLoopForPetriNet]: 28 programPoint places, 9 predicate places. [2024-01-31 17:43:26,370 INFO L495 AbstractCegarLoop]: Abstraction has has 37 places, 29 transitions, 114 flow [2024-01-31 17:43:26,370 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 9.4) internal successors, (47), 5 states have internal predecessors, (47), 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 17:43:26,371 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-31 17:43:26,371 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-01-31 17:43:26,384 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2024-01-31 17:43:26,582 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-01-31 17:43:26,583 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-01-31 17:43:26,583 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-31 17:43:26,583 INFO L85 PathProgramCache]: Analyzing trace with hash 1067280986, now seen corresponding path program 1 times [2024-01-31 17:43:26,584 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-31 17:43:26,584 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [652972386] [2024-01-31 17:43:26,584 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-31 17:43:26,584 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-31 17:43:26,618 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-31 17:43:27,020 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-31 17:43:27,023 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-31 17:43:27,023 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [652972386] [2024-01-31 17:43:27,023 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [652972386] provided 0 perfect and 1 imperfect interpolant sequences [2024-01-31 17:43:27,024 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1708492334] [2024-01-31 17:43:27,024 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-31 17:43:27,024 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-01-31 17:43:27,025 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-01-31 17:43:27,033 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-01-31 17:43:27,060 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-01-31 17:43:27,117 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-31 17:43:27,118 INFO L262 TraceCheckSpWp]: Trace formula consists of 181 conjuncts, 19 conjunts are in the unsatisfiable core [2024-01-31 17:43:27,120 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-01-31 17:43:27,203 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-01-31 17:43:27,203 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-01-31 17:43:27,258 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-01-31 17:43:27,259 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 17 treesize of output 14 [2024-01-31 17:43:27,278 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-01-31 17:43:27,278 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1708492334] provided 0 perfect and 2 imperfect interpolant sequences [2024-01-31 17:43:27,278 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-01-31 17:43:27,279 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 7, 7] total 18 [2024-01-31 17:43:27,279 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2025392909] [2024-01-31 17:43:27,279 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-01-31 17:43:27,280 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2024-01-31 17:43:27,281 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-31 17:43:27,281 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2024-01-31 17:43:27,282 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=55, Invalid=287, Unknown=0, NotChecked=0, Total=342 [2024-01-31 17:43:27,348 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 27 [2024-01-31 17:43:27,348 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 37 places, 29 transitions, 114 flow. Second operand has 19 states, 19 states have (on average 6.947368421052632) internal successors, (132), 19 states have internal predecessors, (132), 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 17:43:27,349 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-31 17:43:27,349 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 27 [2024-01-31 17:43:27,349 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-31 17:43:27,977 INFO L124 PetriNetUnfolderBase]: 479/910 cut-off events. [2024-01-31 17:43:27,977 INFO L125 PetriNetUnfolderBase]: For 406/406 co-relation queries the response was YES. [2024-01-31 17:43:27,979 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2456 conditions, 910 events. 479/910 cut-off events. For 406/406 co-relation queries the response was YES. Maximal size of possible extension queue 58. Compared 4485 event pairs, 32 based on Foata normal form. 2/911 useless extension candidates. Maximal degree in co-relation 2432. Up to 293 conditions per place. [2024-01-31 17:43:27,983 INFO L140 encePairwiseOnDemand]: 13/27 looper letters, 121 selfloop transitions, 81 changer transitions 2/209 dead transitions. [2024-01-31 17:43:27,983 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 69 places, 209 transitions, 1112 flow [2024-01-31 17:43:27,984 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2024-01-31 17:43:27,984 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 33 states. [2024-01-31 17:43:27,985 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 371 transitions. [2024-01-31 17:43:27,986 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4163860830527497 [2024-01-31 17:43:27,986 INFO L175 Difference]: Start difference. First operand has 37 places, 29 transitions, 114 flow. Second operand 33 states and 371 transitions. [2024-01-31 17:43:27,986 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 69 places, 209 transitions, 1112 flow [2024-01-31 17:43:27,988 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 66 places, 209 transitions, 1092 flow, removed 0 selfloop flow, removed 3 redundant places. [2024-01-31 17:43:27,990 INFO L231 Difference]: Finished difference. Result has 81 places, 124 transitions, 799 flow [2024-01-31 17:43:27,991 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=27, PETRI_DIFFERENCE_MINUEND_FLOW=108, PETRI_DIFFERENCE_MINUEND_PLACES=34, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=29, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=14, PETRI_DIFFERENCE_SUBTRAHEND_STATES=33, PETRI_FLOW=799, PETRI_PLACES=81, PETRI_TRANSITIONS=124} [2024-01-31 17:43:27,991 INFO L281 CegarLoopForPetriNet]: 28 programPoint places, 53 predicate places. [2024-01-31 17:43:27,991 INFO L495 AbstractCegarLoop]: Abstraction has has 81 places, 124 transitions, 799 flow [2024-01-31 17:43:27,992 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 6.947368421052632) internal successors, (132), 19 states have internal predecessors, (132), 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 17:43:27,992 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-31 17:43:27,992 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] [2024-01-31 17:43:28,007 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2024-01-31 17:43:28,203 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-01-31 17:43:28,204 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-01-31 17:43:28,204 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-31 17:43:28,204 INFO L85 PathProgramCache]: Analyzing trace with hash -1913404626, now seen corresponding path program 2 times [2024-01-31 17:43:28,204 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-31 17:43:28,204 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1605282221] [2024-01-31 17:43:28,205 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-31 17:43:28,205 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-31 17:43:28,236 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-01-31 17:43:28,236 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-01-31 17:43:28,252 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-01-31 17:43:28,287 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2024-01-31 17:43:28,291 INFO L360 BasicCegarLoop]: Counterexample is feasible [2024-01-31 17:43:28,292 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (2 of 3 remaining) [2024-01-31 17:43:28,294 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 3 remaining) [2024-01-31 17:43:28,294 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 3 remaining) [2024-01-31 17:43:28,295 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-01-31 17:43:28,295 INFO L445 BasicCegarLoop]: Path program histogram: [2, 1, 1, 1, 1, 1] [2024-01-31 17:43:28,299 INFO L229 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2024-01-31 17:43:28,301 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2024-01-31 17:43:28,322 WARN L1574 BoogieBacktranslator]: Unfinished Backtranslation: Expected StepInfo for loop construct to contain Condition, but it did not [2024-01-31 17:43:28,324 WARN L1574 BoogieBacktranslator]: Unfinished Backtranslation: Expected StepInfo for loop construct to contain Condition, but it did not [2024-01-31 17:43:28,329 WARN L1574 BoogieBacktranslator]: Unfinished Backtranslation: Expected StepInfo for loop construct to contain Condition, but it did not [2024-01-31 17:43:28,338 INFO L201 PluginConnector]: Adding new model witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 31.01 05:43:28 BasicIcfg [2024-01-31 17:43:28,340 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2024-01-31 17:43:28,340 INFO L158 Benchmark]: Toolchain (without parser) took 5401.84ms. Allocated memory was 130.0MB in the beginning and 218.1MB in the end (delta: 88.1MB). Free memory was 53.6MB in the beginning and 177.0MB in the end (delta: -123.3MB). Peak memory consumption was 81.7MB. Max. memory is 16.1GB. [2024-01-31 17:43:28,341 INFO L158 Benchmark]: CDTParser took 1.29ms. Allocated memory is still 130.0MB. Free memory is still 89.1MB. There was no memory consumed. Max. memory is 16.1GB. [2024-01-31 17:43:28,341 INFO L158 Benchmark]: Witness Parser took 4.40ms. Allocated memory is still 130.0MB. Free memory is still 58.5MB. There was no memory consumed. Max. memory is 16.1GB. [2024-01-31 17:43:28,342 INFO L158 Benchmark]: CACSL2BoogieTranslator took 318.70ms. Allocated memory was 130.0MB in the beginning and 163.6MB in the end (delta: 33.6MB). Free memory was 53.6MB in the beginning and 129.1MB in the end (delta: -75.5MB). Peak memory consumption was 14.2MB. Max. memory is 16.1GB. [2024-01-31 17:43:28,342 INFO L158 Benchmark]: Boogie Procedure Inliner took 59.63ms. Allocated memory is still 163.6MB. Free memory was 129.1MB in the beginning and 127.0MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2024-01-31 17:43:28,342 INFO L158 Benchmark]: Boogie Preprocessor took 66.46ms. Allocated memory is still 163.6MB. Free memory was 127.0MB in the beginning and 124.9MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2024-01-31 17:43:28,342 INFO L158 Benchmark]: RCFGBuilder took 663.72ms. Allocated memory is still 163.6MB. Free memory was 124.9MB in the beginning and 79.8MB in the end (delta: 45.1MB). Peak memory consumption was 44.0MB. Max. memory is 16.1GB. [2024-01-31 17:43:28,343 INFO L158 Benchmark]: TraceAbstraction took 4287.44ms. Allocated memory was 163.6MB in the beginning and 218.1MB in the end (delta: 54.5MB). Free memory was 79.8MB in the beginning and 177.0MB in the end (delta: -97.1MB). Peak memory consumption was 73.8MB. Max. memory is 16.1GB. [2024-01-31 17:43:28,344 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 1.29ms. Allocated memory is still 130.0MB. Free memory is still 89.1MB. There was no memory consumed. Max. memory is 16.1GB. * Witness Parser took 4.40ms. Allocated memory is still 130.0MB. Free memory is still 58.5MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 318.70ms. Allocated memory was 130.0MB in the beginning and 163.6MB in the end (delta: 33.6MB). Free memory was 53.6MB in the beginning and 129.1MB in the end (delta: -75.5MB). Peak memory consumption was 14.2MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 59.63ms. Allocated memory is still 163.6MB. Free memory was 129.1MB in the beginning and 127.0MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 66.46ms. Allocated memory is still 163.6MB. Free memory was 127.0MB in the beginning and 124.9MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 663.72ms. Allocated memory is still 163.6MB. Free memory was 124.9MB in the beginning and 79.8MB in the end (delta: 45.1MB). Peak memory consumption was 44.0MB. Max. memory is 16.1GB. * TraceAbstraction took 4287.44ms. Allocated memory was 163.6MB in the beginning and 218.1MB in the end (delta: 54.5MB). Free memory was 79.8MB in the beginning and 177.0MB in the end (delta: -97.1MB). Peak memory consumption was 73.8MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Expected StepInfo for loop construct to contain Condition, but it did not - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Expected StepInfo for loop construct to contain Condition, but it did not - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Expected StepInfo for loop construct to contain Condition, but it did not - GenericResult: Unfinished Backtranslation The program execution was not completely translated back. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 87]: a call to reach_error is reachable a call to reach_error is reachable We found a FailurePath: [L41] 0 int* A; [L42] 0 int counter, N; [L75] 0 pthread_t t1, t2; [L77] 0 N = __VERIFIER_nondet_int() [L78] CALL, EXPR 0 create_fresh_int_array(N) [L93] CALL 0 assume_abort_if_not(size >= 0) [L38] COND FALSE 0 !(!cond) [L93] RET 0 assume_abort_if_not(size >= 0) [L94] CALL 0 assume_abort_if_not(size <= (((size_t) 4294967295) / sizeof(int))) [L38] COND FALSE 0 !(!cond) [L94] RET 0 assume_abort_if_not(size <= (((size_t) 4294967295) / sizeof(int))) [L96] 0 int* arr = (int*)malloc(sizeof(int) * (size_t)size); [L97] 0 int i = 0; VAL [A={0:0}, N=1, \old(size)=1, arr={-3:0}, counter=0, i=0, size=1] [L97] COND TRUE 0 i < size [L98] 0 arr[i] = __VERIFIER_nondet_int() [L97] 0 i++ VAL [A={0:0}, N=1, \old(size)=1, arr={-3:0}, counter=0, i=1, size=1] [L97] COND FALSE 0 !(i < size) [L100] 0 return arr; [L78] RET, EXPR 0 create_fresh_int_array(N) [L78] 0 A = create_fresh_int_array(N) [L81] FCALL, FORK 0 pthread_create(&t1, 0, thread1, 0) VAL [A={-3:0}, N=1, counter=0, t1={3:0}, t2={5:0}] [L82] FCALL, FORK 0 pthread_create(&t2, 0, thread2, 0) VAL [A={-3:0}, N=1, counter=0, t1={3:0}, t2={5:0}] [L83] 0 \read(t1) VAL [A={-3:0}, N=1, counter=0] [L49] 1 int i=0; VAL [A={-3:0}, N=1, _argptr={0:0}, _argptr={0:0}, counter=0, i=0] [L49] COND TRUE 1 i= 0 || a >= -2147483648 - b) [L38] COND FALSE 1 !(!cond) [L110] RET 1 assume_abort_if_not(b >= 0 || a >= -2147483648 - b) [L111] CALL 1 assume_abort_if_not(b <= 0 || a <= 2147483647 - b) [L38] COND FALSE 1 !(!cond) [L111] RET 1 assume_abort_if_not(b <= 0 || a <= 2147483647 - b) [L112] 1 return a + b; [L51] RET, EXPR 1 plus(counter, A[i]) [L51] 1 int tmp = plus(counter, A[i]); [L62] 2 int i=0; VAL [A={-3:0}, N=1, _argptr={0:0}, _argptr={0:0}, counter=0, i=0] [L62] COND TRUE 2 i= b - 2147483648) [L38] COND FALSE 2 !(!cond) [L104] RET 2 assume_abort_if_not(b <= 0 || a >= b - 2147483648) [L105] CALL 2 assume_abort_if_not(b >= 0 || a <= b + 2147483647) [L38] COND FALSE 2 !(!cond) [L105] RET 2 assume_abort_if_not(b >= 0 || a <= b + 2147483647) [L106] 2 return a - b; [L64] RET, EXPR 2 minus(counter, A[i]) [L64] 2 int tmp = minus(counter, A[i]); [L67] 2 counter = tmp VAL [A={-3:0}, N=1, _argptr={0:0}, _argptr={0:0}, counter=4, i=0, tmp=4] [L62] 2 i++ VAL [A={-3:0}, N=1, _argptr={0:0}, _argptr={0:0}, counter=4, i=1, tmp=4] [L62] COND FALSE 2 !(i