./Ultimate.py --spec ../../../trunk/examples/svcomp/properties/unreach-call.prp --file ../../../trunk/examples/svcomp/weaver/popl20-three-array-min.wvr.c --full-output --witness-type correctness_witness --witnessparser.only.consider.loop.invariants false --cacsl2boogietranslator.check.unreachability.of.reach_error.function false --validate ./goblint.2024-06-19_11-23-25.files/mutex-meet-nonrel/popl20-three-array-min.wvr.yml/witness.yml --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 7724a2de 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-three-array-min.wvr.c ./goblint.2024-06-19_11-23-25.files/mutex-meet-nonrel/popl20-three-array-min.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 --cacsl2boogietranslator.check.unreachability.of.reach_error.function false --- Real Ultimate output --- This is Ultimate 0.2.4-tmp.fs.goblint-validation-7724a2d-m [2024-06-28 02:47:06,244 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-06-28 02:47:06,303 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-06-28 02:47:06,306 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-06-28 02:47:06,307 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-06-28 02:47:06,321 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-06-28 02:47:06,322 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-06-28 02:47:06,322 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-06-28 02:47:06,322 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-06-28 02:47:06,323 INFO L153 SettingsManager]: * Use memory slicer=true [2024-06-28 02:47:06,323 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-06-28 02:47:06,323 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-06-28 02:47:06,324 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-06-28 02:47:06,324 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-06-28 02:47:06,324 INFO L153 SettingsManager]: * Use SBE=true [2024-06-28 02:47:06,324 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-06-28 02:47:06,325 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-06-28 02:47:06,325 INFO L153 SettingsManager]: * sizeof long=4 [2024-06-28 02:47:06,325 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-06-28 02:47:06,325 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-06-28 02:47:06,326 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-06-28 02:47:06,326 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-06-28 02:47:06,326 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-06-28 02:47:06,326 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-06-28 02:47:06,327 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-06-28 02:47:06,327 INFO L153 SettingsManager]: * sizeof long double=12 [2024-06-28 02:47:06,327 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-06-28 02:47:06,327 INFO L153 SettingsManager]: * Use constant arrays=true [2024-06-28 02:47:06,327 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-06-28 02:47:06,328 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-06-28 02:47:06,328 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-06-28 02:47:06,328 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-06-28 02:47:06,328 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-06-28 02:47:06,328 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-06-28 02:47:06,329 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-06-28 02:47:06,329 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-06-28 02:47:06,329 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-06-28 02:47:06,329 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-06-28 02:47:06,329 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-06-28 02:47:06,330 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-06-28 02:47:06,330 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2024-06-28 02:47:06,330 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-06-28 02:47:06,330 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-06-28 02:47:06,330 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessparser: Only consider loop invariants -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Check unreachability of reach_error function -> false [2024-06-28 02:47:06,553 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-06-28 02:47:06,579 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-06-28 02:47:06,581 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-06-28 02:47:06,582 INFO L270 PluginConnector]: Initializing Witness Parser... [2024-06-28 02:47:06,583 INFO L274 PluginConnector]: Witness Parser initialized [2024-06-28 02:47:06,584 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/./goblint.2024-06-19_11-23-25.files/mutex-meet-nonrel/popl20-three-array-min.wvr.yml/witness.yml [2024-06-28 02:47:06,643 INFO L270 PluginConnector]: Initializing CDTParser... [2024-06-28 02:47:06,644 INFO L274 PluginConnector]: CDTParser initialized [2024-06-28 02:47:06,644 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/weaver/popl20-three-array-min.wvr.c [2024-06-28 02:47:07,639 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-06-28 02:47:07,799 INFO L384 CDTParser]: Found 1 translation units. [2024-06-28 02:47:07,799 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/weaver/popl20-three-array-min.wvr.c [2024-06-28 02:47:07,806 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c7073d43b/6e6efd3c73da44cbaae4d5473e70ae35/FLAG4c50bb3c1 [2024-06-28 02:47:07,820 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c7073d43b/6e6efd3c73da44cbaae4d5473e70ae35 [2024-06-28 02:47:07,822 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-06-28 02:47:07,823 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2024-06-28 02:47:07,824 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-06-28 02:47:07,824 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-06-28 02:47:07,829 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-06-28 02:47:07,829 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 28.06 02:47:06" (1/2) ... [2024-06-28 02:47:07,831 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@d249e86 and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 28.06 02:47:07, skipping insertion in model container [2024-06-28 02:47:07,832 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 28.06 02:47:06" (1/2) ... [2024-06-28 02:47:07,833 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@5bfa1ae9 and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 28.06 02:47:07, skipping insertion in model container [2024-06-28 02:47:07,833 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.06 02:47:07" (2/2) ... [2024-06-28 02:47:07,833 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@d249e86 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.06 02:47:07, skipping insertion in model container [2024-06-28 02:47:07,834 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.06 02:47:07" (2/2) ... [2024-06-28 02:47:07,834 INFO L83 nessWitnessExtractor]: Extracting all invariants from correctness witness [2024-06-28 02:47:07,848 INFO L95 edCorrectnessWitness]: Found the following entries in the witness: [2024-06-28 02:47:07,849 INFO L97 edCorrectnessWitness]: Location invariant before [L109-L109] (! multithreaded || 1 <= p) && (! multithreaded || 1 <= p) [2024-06-28 02:47:07,849 INFO L97 edCorrectnessWitness]: Location invariant before [L107-L107] (! multithreaded || 1 <= p) && (! multithreaded || 1 <= p) [2024-06-28 02:47:07,849 INFO L97 edCorrectnessWitness]: Location invariant before [L108-L108] (! multithreaded || 1 <= p) && (! multithreaded || 1 <= p) [2024-06-28 02:47:07,849 INFO L103 edCorrectnessWitness]: ghost_variable multithreaded = 0 [2024-06-28 02:47:07,850 INFO L106 edCorrectnessWitness]: ghost_update [L106-L106] multithreaded = 1; [2024-06-28 02:47:07,871 INFO L177 MainTranslator]: Built tables and reachable declarations [2024-06-28 02:47:08,003 INFO L207 PostProcessor]: Analyzing one entry point: main [2024-06-28 02:47:08,022 INFO L202 MainTranslator]: Completed pre-run Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local [2024-06-28 02:47:08,084 INFO L207 PostProcessor]: Analyzing one entry point: main [2024-06-28 02:47:08,103 INFO L206 MainTranslator]: Completed translation [2024-06-28 02:47:08,104 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.06 02:47:08 WrapperNode [2024-06-28 02:47:08,104 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-06-28 02:47:08,105 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-06-28 02:47:08,105 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-06-28 02:47:08,105 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-06-28 02:47:08,110 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.06 02:47:08" (1/1) ... [2024-06-28 02:47:08,116 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.06 02:47:08" (1/1) ... [2024-06-28 02:47:08,142 INFO L138 Inliner]: procedures = 25, calls = 43, calls flagged for inlining = 15, calls inlined = 23, statements flattened = 230 [2024-06-28 02:47:08,143 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-06-28 02:47:08,143 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-06-28 02:47:08,143 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-06-28 02:47:08,144 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-06-28 02:47:08,155 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.06 02:47:08" (1/1) ... [2024-06-28 02:47:08,156 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.06 02:47:08" (1/1) ... [2024-06-28 02:47:08,168 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.06 02:47:08" (1/1) ... [2024-06-28 02:47:08,204 INFO L175 MemorySlicer]: Split 18 memory accesses to 2 slices as follows [2, 16]. 89 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2, 0]. The 4 writes are split as follows [0, 4]. [2024-06-28 02:47:08,204 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.06 02:47:08" (1/1) ... [2024-06-28 02:47:08,208 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.06 02:47:08" (1/1) ... [2024-06-28 02:47:08,216 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.06 02:47:08" (1/1) ... [2024-06-28 02:47:08,229 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.06 02:47:08" (1/1) ... [2024-06-28 02:47:08,230 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.06 02:47:08" (1/1) ... [2024-06-28 02:47:08,231 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.06 02:47:08" (1/1) ... [2024-06-28 02:47:08,234 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-06-28 02:47:08,238 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-06-28 02:47:08,238 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-06-28 02:47:08,239 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-06-28 02:47:08,239 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.06 02:47:08" (1/1) ... [2024-06-28 02:47:08,246 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-06-28 02:47:08,252 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-06-28 02:47:08,338 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) [2024-06-28 02:47:08,368 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 [2024-06-28 02:47:08,394 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-06-28 02:47:08,395 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2024-06-28 02:47:08,395 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2024-06-28 02:47:08,395 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2024-06-28 02:47:08,395 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2024-06-28 02:47:08,395 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2024-06-28 02:47:08,396 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2024-06-28 02:47:08,396 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-06-28 02:47:08,396 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-06-28 02:47:08,396 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-06-28 02:47:08,396 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2024-06-28 02:47:08,397 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2024-06-28 02:47:08,397 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2024-06-28 02:47:08,397 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2024-06-28 02:47:08,398 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-06-28 02:47:08,398 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-06-28 02:47:08,399 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2024-06-28 02:47:08,399 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2024-06-28 02:47:08,401 WARN L214 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2024-06-28 02:47:08,495 INFO L244 CfgBuilder]: Building ICFG [2024-06-28 02:47:08,496 INFO L270 CfgBuilder]: Building CFG for each procedure with an implementation [2024-06-28 02:47:08,789 INFO L289 CfgBuilder]: Ommited future-live optimization because the input is a concurrent program. [2024-06-28 02:47:08,790 INFO L293 CfgBuilder]: Performing block encoding [2024-06-28 02:47:09,083 INFO L315 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-06-28 02:47:09,084 INFO L320 CfgBuilder]: Removed 6 assume(true) statements. [2024-06-28 02:47:09,084 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.06 02:47:09 BoogieIcfgContainer [2024-06-28 02:47:09,084 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-06-28 02:47:09,086 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-06-28 02:47:09,087 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-06-28 02:47:09,089 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-06-28 02:47:09,089 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 28.06 02:47:06" (1/4) ... [2024-06-28 02:47:09,091 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2ca2a26 and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CORRECTNESS_WITNESS 28.06 02:47:09, skipping insertion in model container [2024-06-28 02:47:09,091 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.06 02:47:07" (2/4) ... [2024-06-28 02:47:09,092 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2ca2a26 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.06 02:47:09, skipping insertion in model container [2024-06-28 02:47:09,092 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.06 02:47:08" (3/4) ... [2024-06-28 02:47:09,093 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2ca2a26 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.06 02:47:09, skipping insertion in model container [2024-06-28 02:47:09,093 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.06 02:47:09" (4/4) ... [2024-06-28 02:47:09,094 INFO L112 eAbstractionObserver]: Analyzing ICFG popl20-three-array-min.wvr.c [2024-06-28 02:47:09,108 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-06-28 02:47:09,108 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 3 error locations. [2024-06-28 02:47:09,108 INFO L522 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-06-28 02:47:09,153 INFO L144 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2024-06-28 02:47:09,183 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 47 places, 44 transitions, 109 flow [2024-06-28 02:47:09,211 INFO L124 PetriNetUnfolderBase]: 7/41 cut-off events. [2024-06-28 02:47:09,211 INFO L125 PetriNetUnfolderBase]: For 3/3 co-relation queries the response was YES. [2024-06-28 02:47:09,214 INFO L83 FinitePrefix]: Finished finitePrefix Result has 54 conditions, 41 events. 7/41 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 48 event pairs, 0 based on Foata normal form. 0/31 useless extension candidates. Maximal degree in co-relation 32. Up to 2 conditions per place. [2024-06-28 02:47:09,214 INFO L82 GeneralOperation]: Start removeDead. Operand has 47 places, 44 transitions, 109 flow [2024-06-28 02:47:09,217 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 42 places, 39 transitions, 93 flow [2024-06-28 02:47:09,228 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-06-28 02:47:09,233 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;@1ba8e625, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-06-28 02:47:09,233 INFO L358 AbstractCegarLoop]: Starting to check reachability of 6 error locations. [2024-06-28 02:47:09,237 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-06-28 02:47:09,238 INFO L124 PetriNetUnfolderBase]: 4/12 cut-off events. [2024-06-28 02:47:09,238 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-06-28 02:47:09,238 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:47:09,239 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:47:09,239 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 02:47:09,244 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:47:09,245 INFO L85 PathProgramCache]: Analyzing trace with hash 1900933197, now seen corresponding path program 1 times [2024-06-28 02:47:09,252 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:47:09,252 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [64116020] [2024-06-28 02:47:09,252 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:47:09,253 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:47:09,383 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:47:09,524 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:47:09,525 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:47:09,525 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [64116020] [2024-06-28 02:47:09,526 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [64116020] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:47:09,526 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:47:09,526 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-06-28 02:47:09,527 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2128701863] [2024-06-28 02:47:09,528 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:47:09,534 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-06-28 02:47:09,538 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:47:09,559 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-06-28 02:47:09,560 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-06-28 02:47:09,582 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 44 [2024-06-28 02:47:09,585 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 42 places, 39 transitions, 93 flow. Second operand has 3 states, 3 states have (on average 13.333333333333334) internal successors, (40), 3 states have internal predecessors, (40), 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) [2024-06-28 02:47:09,585 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:47:09,585 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 44 [2024-06-28 02:47:09,586 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:47:09,877 INFO L124 PetriNetUnfolderBase]: 753/1193 cut-off events. [2024-06-28 02:47:09,881 INFO L125 PetriNetUnfolderBase]: For 114/114 co-relation queries the response was YES. [2024-06-28 02:47:09,885 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2337 conditions, 1193 events. 753/1193 cut-off events. For 114/114 co-relation queries the response was YES. Maximal size of possible extension queue 66. Compared 5111 event pairs, 237 based on Foata normal form. 45/1097 useless extension candidates. Maximal degree in co-relation 2061. Up to 675 conditions per place. [2024-06-28 02:47:09,890 INFO L140 encePairwiseOnDemand]: 39/44 looper letters, 42 selfloop transitions, 2 changer transitions 1/53 dead transitions. [2024-06-28 02:47:09,890 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 43 places, 53 transitions, 220 flow [2024-06-28 02:47:09,891 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-06-28 02:47:09,893 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-06-28 02:47:09,897 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 81 transitions. [2024-06-28 02:47:09,899 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6136363636363636 [2024-06-28 02:47:09,900 INFO L175 Difference]: Start difference. First operand has 42 places, 39 transitions, 93 flow. Second operand 3 states and 81 transitions. [2024-06-28 02:47:09,901 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 43 places, 53 transitions, 220 flow [2024-06-28 02:47:09,903 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 38 places, 53 transitions, 206 flow, removed 0 selfloop flow, removed 5 redundant places. [2024-06-28 02:47:09,905 INFO L231 Difference]: Finished difference. Result has 39 places, 39 transitions, 96 flow [2024-06-28 02:47:09,906 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=82, PETRI_DIFFERENCE_MINUEND_PLACES=36, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=38, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=36, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=96, PETRI_PLACES=39, PETRI_TRANSITIONS=39} [2024-06-28 02:47:09,908 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, -3 predicate places. [2024-06-28 02:47:09,909 INFO L495 AbstractCegarLoop]: Abstraction has has 39 places, 39 transitions, 96 flow [2024-06-28 02:47:09,909 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 13.333333333333334) internal successors, (40), 3 states have internal predecessors, (40), 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) [2024-06-28 02:47:09,909 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:47:09,909 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:47:09,910 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-06-28 02:47:09,910 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 02:47:09,910 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:47:09,910 INFO L85 PathProgramCache]: Analyzing trace with hash 2104987631, now seen corresponding path program 1 times [2024-06-28 02:47:09,910 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:47:09,911 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1809762324] [2024-06-28 02:47:09,911 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:47:09,911 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:47:09,928 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:47:09,977 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:47:09,977 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:47:09,977 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1809762324] [2024-06-28 02:47:09,977 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1809762324] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:47:09,978 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:47:09,978 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-06-28 02:47:09,978 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1467328609] [2024-06-28 02:47:09,978 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:47:09,979 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-06-28 02:47:09,979 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:47:09,980 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-06-28 02:47:09,980 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-06-28 02:47:09,986 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 44 [2024-06-28 02:47:09,986 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 39 places, 39 transitions, 96 flow. Second operand has 4 states, 4 states have (on average 14.0) internal successors, (56), 4 states have internal predecessors, (56), 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) [2024-06-28 02:47:09,986 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:47:09,986 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 44 [2024-06-28 02:47:09,987 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:47:10,217 INFO L124 PetriNetUnfolderBase]: 1067/1708 cut-off events. [2024-06-28 02:47:10,217 INFO L125 PetriNetUnfolderBase]: For 265/265 co-relation queries the response was YES. [2024-06-28 02:47:10,220 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3506 conditions, 1708 events. 1067/1708 cut-off events. For 265/265 co-relation queries the response was YES. Maximal size of possible extension queue 77. Compared 7935 event pairs, 405 based on Foata normal form. 54/1582 useless extension candidates. Maximal degree in co-relation 891. Up to 922 conditions per place. [2024-06-28 02:47:10,226 INFO L140 encePairwiseOnDemand]: 38/44 looper letters, 67 selfloop transitions, 5 changer transitions 0/80 dead transitions. [2024-06-28 02:47:10,226 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 43 places, 80 transitions, 334 flow [2024-06-28 02:47:10,227 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-06-28 02:47:10,227 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-06-28 02:47:10,228 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 131 transitions. [2024-06-28 02:47:10,229 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5954545454545455 [2024-06-28 02:47:10,229 INFO L175 Difference]: Start difference. First operand has 39 places, 39 transitions, 96 flow. Second operand 5 states and 131 transitions. [2024-06-28 02:47:10,229 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 43 places, 80 transitions, 334 flow [2024-06-28 02:47:10,231 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 42 places, 80 transitions, 332 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-06-28 02:47:10,233 INFO L231 Difference]: Finished difference. Result has 45 places, 42 transitions, 133 flow [2024-06-28 02:47:10,234 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=94, PETRI_DIFFERENCE_MINUEND_PLACES=38, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=39, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=34, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=133, PETRI_PLACES=45, PETRI_TRANSITIONS=42} [2024-06-28 02:47:10,235 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 3 predicate places. [2024-06-28 02:47:10,235 INFO L495 AbstractCegarLoop]: Abstraction has has 45 places, 42 transitions, 133 flow [2024-06-28 02:47:10,235 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 14.0) internal successors, (56), 4 states have internal predecessors, (56), 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) [2024-06-28 02:47:10,236 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:47:10,240 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:47:10,240 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-06-28 02:47:10,240 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 02:47:10,241 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:47:10,241 INFO L85 PathProgramCache]: Analyzing trace with hash 1701493938, now seen corresponding path program 1 times [2024-06-28 02:47:10,241 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:47:10,242 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [32896484] [2024-06-28 02:47:10,242 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:47:10,242 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:47:10,283 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:47:10,398 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-06-28 02:47:10,398 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:47:10,399 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [32896484] [2024-06-28 02:47:10,399 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [32896484] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:47:10,399 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:47:10,399 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-06-28 02:47:10,399 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1458075894] [2024-06-28 02:47:10,399 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:47:10,400 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-06-28 02:47:10,401 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:47:10,401 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-06-28 02:47:10,401 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-06-28 02:47:10,404 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 44 [2024-06-28 02:47:10,405 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 45 places, 42 transitions, 133 flow. Second operand has 3 states, 3 states have (on average 18.0) internal successors, (54), 3 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:47:10,405 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:47:10,406 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 44 [2024-06-28 02:47:10,406 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:47:10,576 INFO L124 PetriNetUnfolderBase]: 961/1589 cut-off events. [2024-06-28 02:47:10,577 INFO L125 PetriNetUnfolderBase]: For 1005/1020 co-relation queries the response was YES. [2024-06-28 02:47:10,580 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3787 conditions, 1589 events. 961/1589 cut-off events. For 1005/1020 co-relation queries the response was YES. Maximal size of possible extension queue 76. Compared 7534 event pairs, 697 based on Foata normal form. 0/1388 useless extension candidates. Maximal degree in co-relation 1429. Up to 1317 conditions per place. [2024-06-28 02:47:10,584 INFO L140 encePairwiseOnDemand]: 41/44 looper letters, 31 selfloop transitions, 2 changer transitions 0/43 dead transitions. [2024-06-28 02:47:10,585 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 47 places, 43 transitions, 201 flow [2024-06-28 02:47:10,585 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-06-28 02:47:10,585 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-06-28 02:47:10,587 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 72 transitions. [2024-06-28 02:47:10,588 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5454545454545454 [2024-06-28 02:47:10,588 INFO L175 Difference]: Start difference. First operand has 45 places, 42 transitions, 133 flow. Second operand 3 states and 72 transitions. [2024-06-28 02:47:10,588 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 47 places, 43 transitions, 201 flow [2024-06-28 02:47:10,590 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 45 places, 43 transitions, 194 flow, removed 1 selfloop flow, removed 2 redundant places. [2024-06-28 02:47:10,591 INFO L231 Difference]: Finished difference. Result has 46 places, 43 transitions, 138 flow [2024-06-28 02:47:10,592 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=126, PETRI_DIFFERENCE_MINUEND_PLACES=43, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=42, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=40, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=138, PETRI_PLACES=46, PETRI_TRANSITIONS=43} [2024-06-28 02:47:10,593 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 4 predicate places. [2024-06-28 02:47:10,593 INFO L495 AbstractCegarLoop]: Abstraction has has 46 places, 43 transitions, 138 flow [2024-06-28 02:47:10,593 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 18.0) internal successors, (54), 3 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:47:10,593 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:47:10,593 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:47:10,593 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-06-28 02:47:10,594 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 02:47:10,594 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:47:10,594 INFO L85 PathProgramCache]: Analyzing trace with hash -817811056, now seen corresponding path program 1 times [2024-06-28 02:47:10,594 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:47:10,595 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [670201840] [2024-06-28 02:47:10,595 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:47:10,595 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:47:10,615 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:47:10,690 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-06-28 02:47:10,691 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:47:10,691 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [670201840] [2024-06-28 02:47:10,691 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [670201840] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:47:10,691 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:47:10,692 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-06-28 02:47:10,692 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1250385260] [2024-06-28 02:47:10,692 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:47:10,692 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-06-28 02:47:10,692 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:47:10,695 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-06-28 02:47:10,696 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-06-28 02:47:10,699 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 44 [2024-06-28 02:47:10,700 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 46 places, 43 transitions, 138 flow. Second operand has 4 states, 4 states have (on average 17.25) internal successors, (69), 4 states have internal predecessors, (69), 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) [2024-06-28 02:47:10,700 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:47:10,700 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 44 [2024-06-28 02:47:10,700 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:47:10,838 INFO L124 PetriNetUnfolderBase]: 961/1591 cut-off events. [2024-06-28 02:47:10,838 INFO L125 PetriNetUnfolderBase]: For 727/742 co-relation queries the response was YES. [2024-06-28 02:47:10,841 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3673 conditions, 1591 events. 961/1591 cut-off events. For 727/742 co-relation queries the response was YES. Maximal size of possible extension queue 76. Compared 7482 event pairs, 697 based on Foata normal form. 1/1391 useless extension candidates. Maximal degree in co-relation 3658. Up to 1316 conditions per place. [2024-06-28 02:47:10,846 INFO L140 encePairwiseOnDemand]: 37/44 looper letters, 29 selfloop transitions, 6 changer transitions 0/45 dead transitions. [2024-06-28 02:47:10,846 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 49 places, 45 transitions, 212 flow [2024-06-28 02:47:10,847 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-06-28 02:47:10,847 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-06-28 02:47:10,847 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 89 transitions. [2024-06-28 02:47:10,847 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5056818181818182 [2024-06-28 02:47:10,847 INFO L175 Difference]: Start difference. First operand has 46 places, 43 transitions, 138 flow. Second operand 4 states and 89 transitions. [2024-06-28 02:47:10,848 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 49 places, 45 transitions, 212 flow [2024-06-28 02:47:10,849 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 48 places, 45 transitions, 208 flow, removed 1 selfloop flow, removed 1 redundant places. [2024-06-28 02:47:10,850 INFO L231 Difference]: Finished difference. Result has 49 places, 45 transitions, 162 flow [2024-06-28 02:47:10,850 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=134, PETRI_DIFFERENCE_MINUEND_PLACES=45, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=43, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=37, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=162, PETRI_PLACES=49, PETRI_TRANSITIONS=45} [2024-06-28 02:47:10,851 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 7 predicate places. [2024-06-28 02:47:10,851 INFO L495 AbstractCegarLoop]: Abstraction has has 49 places, 45 transitions, 162 flow [2024-06-28 02:47:10,851 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 17.25) internal successors, (69), 4 states have internal predecessors, (69), 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) [2024-06-28 02:47:10,851 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:47:10,851 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:47:10,851 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-06-28 02:47:10,851 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 02:47:10,852 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:47:10,852 INFO L85 PathProgramCache]: Analyzing trace with hash -44175725, now seen corresponding path program 1 times [2024-06-28 02:47:10,852 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:47:10,852 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2067742579] [2024-06-28 02:47:10,852 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:47:10,853 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:47:10,867 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:47:10,951 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-06-28 02:47:10,952 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:47:10,952 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2067742579] [2024-06-28 02:47:10,952 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2067742579] provided 0 perfect and 1 imperfect interpolant sequences [2024-06-28 02:47:10,952 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1185186019] [2024-06-28 02:47:10,952 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:47:10,952 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-06-28 02:47:10,953 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-06-28 02:47:10,956 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) [2024-06-28 02:47:10,968 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-06-28 02:47:11,052 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:47:11,054 INFO L262 TraceCheckSpWp]: Trace formula consists of 233 conjuncts, 7 conjunts are in the unsatisfiable core [2024-06-28 02:47:11,059 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-06-28 02:47:11,127 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-06-28 02:47:11,128 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-06-28 02:47:11,172 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-06-28 02:47:11,172 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1185186019] provided 0 perfect and 2 imperfect interpolant sequences [2024-06-28 02:47:11,172 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-06-28 02:47:11,172 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 11 [2024-06-28 02:47:11,172 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1999608115] [2024-06-28 02:47:11,173 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-06-28 02:47:11,173 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-28 02:47:11,173 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:47:11,174 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-28 02:47:11,174 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=87, Unknown=0, NotChecked=0, Total=132 [2024-06-28 02:47:11,188 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 44 [2024-06-28 02:47:11,188 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 49 places, 45 transitions, 162 flow. Second operand has 12 states, 12 states have (on average 15.25) internal successors, (183), 12 states have internal predecessors, (183), 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) [2024-06-28 02:47:11,189 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:47:11,189 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 44 [2024-06-28 02:47:11,189 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:47:11,468 INFO L124 PetriNetUnfolderBase]: 1536/2457 cut-off events. [2024-06-28 02:47:11,468 INFO L125 PetriNetUnfolderBase]: For 672/711 co-relation queries the response was YES. [2024-06-28 02:47:11,495 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5519 conditions, 2457 events. 1536/2457 cut-off events. For 672/711 co-relation queries the response was YES. Maximal size of possible extension queue 95. Compared 11713 event pairs, 1058 based on Foata normal form. 44/2220 useless extension candidates. Maximal degree in co-relation 4511. Up to 1728 conditions per place. [2024-06-28 02:47:11,501 INFO L140 encePairwiseOnDemand]: 34/44 looper letters, 30 selfloop transitions, 9 changer transitions 44/92 dead transitions. [2024-06-28 02:47:11,502 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 57 places, 92 transitions, 478 flow [2024-06-28 02:47:11,502 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 02:47:11,502 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 02:47:11,503 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 197 transitions. [2024-06-28 02:47:11,503 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.49747474747474746 [2024-06-28 02:47:11,503 INFO L175 Difference]: Start difference. First operand has 49 places, 45 transitions, 162 flow. Second operand 9 states and 197 transitions. [2024-06-28 02:47:11,503 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 57 places, 92 transitions, 478 flow [2024-06-28 02:47:11,505 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 56 places, 92 transitions, 477 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-06-28 02:47:11,506 INFO L231 Difference]: Finished difference. Result has 61 places, 48 transitions, 219 flow [2024-06-28 02:47:11,506 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=161, PETRI_DIFFERENCE_MINUEND_PLACES=48, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=45, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=36, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=219, PETRI_PLACES=61, PETRI_TRANSITIONS=48} [2024-06-28 02:47:11,507 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 19 predicate places. [2024-06-28 02:47:11,507 INFO L495 AbstractCegarLoop]: Abstraction has has 61 places, 48 transitions, 219 flow [2024-06-28 02:47:11,507 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 15.25) internal successors, (183), 12 states have internal predecessors, (183), 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) [2024-06-28 02:47:11,507 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:47:11,507 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:47:11,524 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2024-06-28 02:47:11,719 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-06-28 02:47:11,719 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 02:47:11,720 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:47:11,720 INFO L85 PathProgramCache]: Analyzing trace with hash 195977730, now seen corresponding path program 2 times [2024-06-28 02:47:11,720 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:47:11,720 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [485300604] [2024-06-28 02:47:11,720 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:47:11,720 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:47:11,736 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:47:11,778 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2024-06-28 02:47:11,778 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:47:11,778 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [485300604] [2024-06-28 02:47:11,778 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [485300604] provided 0 perfect and 1 imperfect interpolant sequences [2024-06-28 02:47:11,779 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1075938606] [2024-06-28 02:47:11,779 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-06-28 02:47:11,779 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-06-28 02:47:11,779 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-06-28 02:47:11,780 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) [2024-06-28 02:47:11,805 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-06-28 02:47:11,875 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-06-28 02:47:11,876 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-06-28 02:47:11,877 INFO L262 TraceCheckSpWp]: Trace formula consists of 260 conjuncts, 4 conjunts are in the unsatisfiable core [2024-06-28 02:47:11,879 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-06-28 02:47:11,896 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2024-06-28 02:47:11,897 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-06-28 02:47:11,897 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1075938606] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:47:11,897 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-06-28 02:47:11,898 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4] total 5 [2024-06-28 02:47:11,898 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1447408500] [2024-06-28 02:47:11,898 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:47:11,898 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-06-28 02:47:11,898 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:47:11,899 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-06-28 02:47:11,899 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-06-28 02:47:11,911 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 44 [2024-06-28 02:47:11,911 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 61 places, 48 transitions, 219 flow. Second operand has 5 states, 5 states have (on average 14.4) internal successors, (72), 5 states have internal predecessors, (72), 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) [2024-06-28 02:47:11,911 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:47:11,911 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 44 [2024-06-28 02:47:11,912 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:47:12,117 INFO L124 PetriNetUnfolderBase]: 904/1518 cut-off events. [2024-06-28 02:47:12,117 INFO L125 PetriNetUnfolderBase]: For 715/718 co-relation queries the response was YES. [2024-06-28 02:47:12,121 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3709 conditions, 1518 events. 904/1518 cut-off events. For 715/718 co-relation queries the response was YES. Maximal size of possible extension queue 77. Compared 7361 event pairs, 202 based on Foata normal form. 54/1425 useless extension candidates. Maximal degree in co-relation 3671. Up to 409 conditions per place. [2024-06-28 02:47:12,122 INFO L140 encePairwiseOnDemand]: 38/44 looper letters, 0 selfloop transitions, 0 changer transitions 96/96 dead transitions. [2024-06-28 02:47:12,122 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 59 places, 96 transitions, 494 flow [2024-06-28 02:47:12,123 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-28 02:47:12,123 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-28 02:47:12,123 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 152 transitions. [2024-06-28 02:47:12,123 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5757575757575758 [2024-06-28 02:47:12,124 INFO L175 Difference]: Start difference. First operand has 61 places, 48 transitions, 219 flow. Second operand 6 states and 152 transitions. [2024-06-28 02:47:12,124 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 59 places, 96 transitions, 494 flow [2024-06-28 02:47:12,129 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 54 places, 96 transitions, 468 flow, removed 10 selfloop flow, removed 5 redundant places. [2024-06-28 02:47:12,129 INFO L231 Difference]: Finished difference. Result has 54 places, 0 transitions, 0 flow [2024-06-28 02:47:12,129 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=177, PETRI_DIFFERENCE_MINUEND_PLACES=49, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=46, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=46, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=0, PETRI_PLACES=54, PETRI_TRANSITIONS=0} [2024-06-28 02:47:12,131 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 12 predicate places. [2024-06-28 02:47:12,131 INFO L495 AbstractCegarLoop]: Abstraction has has 54 places, 0 transitions, 0 flow [2024-06-28 02:47:12,132 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 14.4) internal successors, (72), 5 states have internal predecessors, (72), 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) [2024-06-28 02:47:12,134 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT (5 of 6 remaining) [2024-06-28 02:47:12,134 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (4 of 6 remaining) [2024-06-28 02:47:12,134 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (3 of 6 remaining) [2024-06-28 02:47:12,134 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (2 of 6 remaining) [2024-06-28 02:47:12,134 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 6 remaining) [2024-06-28 02:47:12,135 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 6 remaining) [2024-06-28 02:47:12,152 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2024-06-28 02:47:12,347 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5 [2024-06-28 02:47:12,348 INFO L445 BasicCegarLoop]: Path program histogram: [2, 1, 1, 1, 1] [2024-06-28 02:47:12,350 INFO L229 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2024-06-28 02:47:12,350 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2024-06-28 02:47:12,353 INFO L507 ceAbstractionStarter]: Automizer considered 3 witness invariants [2024-06-28 02:47:12,354 INFO L508 ceAbstractionStarter]: WitnessConsidered=3 [2024-06-28 02:47:12,354 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 28.06 02:47:12 BasicIcfg [2024-06-28 02:47:12,354 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2024-06-28 02:47:12,355 INFO L158 Benchmark]: Toolchain (without parser) took 4531.94ms. Allocated memory was 165.7MB in the beginning and 270.5MB in the end (delta: 104.9MB). Free memory was 109.9MB in the beginning and 87.3MB in the end (delta: 22.6MB). Peak memory consumption was 126.7MB. Max. memory is 16.1GB. [2024-06-28 02:47:12,355 INFO L158 Benchmark]: Witness Parser took 0.10ms. Allocated memory is still 96.5MB. Free memory was 63.7MB in the beginning and 63.7MB in the end (delta: 41.1kB). There was no memory consumed. Max. memory is 16.1GB. [2024-06-28 02:47:12,355 INFO L158 Benchmark]: CDTParser took 0.12ms. Allocated memory is still 96.5MB. Free memory was 60.7MB in the beginning and 60.6MB in the end (delta: 41.1kB). There was no memory consumed. Max. memory is 16.1GB. [2024-06-28 02:47:12,356 INFO L158 Benchmark]: CACSL2BoogieTranslator took 279.87ms. Allocated memory is still 165.7MB. Free memory was 109.9MB in the beginning and 94.2MB in the end (delta: 15.7MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. [2024-06-28 02:47:12,356 INFO L158 Benchmark]: Boogie Procedure Inliner took 38.39ms. Allocated memory is still 165.7MB. Free memory was 94.2MB in the beginning and 91.8MB in the end (delta: 2.4MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2024-06-28 02:47:12,356 INFO L158 Benchmark]: Boogie Preprocessor took 94.34ms. Allocated memory is still 165.7MB. Free memory was 91.8MB in the beginning and 133.0MB in the end (delta: -41.2MB). Peak memory consumption was 4.8MB. Max. memory is 16.1GB. [2024-06-28 02:47:12,356 INFO L158 Benchmark]: RCFGBuilder took 846.33ms. Allocated memory was 165.7MB in the beginning and 199.2MB in the end (delta: 33.6MB). Free memory was 133.0MB in the beginning and 158.9MB in the end (delta: -25.9MB). Peak memory consumption was 92.4MB. Max. memory is 16.1GB. [2024-06-28 02:47:12,357 INFO L158 Benchmark]: TraceAbstraction took 3267.92ms. Allocated memory was 199.2MB in the beginning and 270.5MB in the end (delta: 71.3MB). Free memory was 158.9MB in the beginning and 87.3MB in the end (delta: 71.5MB). Peak memory consumption was 142.8MB. Max. memory is 16.1GB. [2024-06-28 02:47:12,358 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * Witness Parser took 0.10ms. Allocated memory is still 96.5MB. Free memory was 63.7MB in the beginning and 63.7MB in the end (delta: 41.1kB). There was no memory consumed. Max. memory is 16.1GB. * CDTParser took 0.12ms. Allocated memory is still 96.5MB. Free memory was 60.7MB in the beginning and 60.6MB in the end (delta: 41.1kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 279.87ms. Allocated memory is still 165.7MB. Free memory was 109.9MB in the beginning and 94.2MB in the end (delta: 15.7MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 38.39ms. Allocated memory is still 165.7MB. Free memory was 94.2MB in the beginning and 91.8MB in the end (delta: 2.4MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 94.34ms. Allocated memory is still 165.7MB. Free memory was 91.8MB in the beginning and 133.0MB in the end (delta: -41.2MB). Peak memory consumption was 4.8MB. Max. memory is 16.1GB. * RCFGBuilder took 846.33ms. Allocated memory was 165.7MB in the beginning and 199.2MB in the end (delta: 33.6MB). Free memory was 133.0MB in the beginning and 158.9MB in the end (delta: -25.9MB). Peak memory consumption was 92.4MB. Max. memory is 16.1GB. * TraceAbstraction took 3267.92ms. Allocated memory was 199.2MB in the beginning and 270.5MB in the end (delta: 71.3MB). Free memory was 158.9MB in the beginning and 87.3MB in the end (delta: 71.5MB). Peak memory consumption was 142.8MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 107]: invariant of correctness witness holds For all program executions holds that invariant of correctness witness holds at this location - PositiveResult [Line: 108]: invariant of correctness witness holds For all program executions holds that invariant of correctness witness holds at this location - PositiveResult [Line: 109]: invariant of correctness witness holds For all program executions holds that invariant of correctness witness holds at this location - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 7 procedures, 57 locations, 6 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 0.0s, RemoveRedundantFlowTime: 0.0s, RemoveRedundantFlowUnfoldingTime: 0.0s, BackfoldingTime: 0.0s, BackfoldingUnfoldingTime: 0.0s, FlowIncreaseByBackfolding: 0, BasicCegarLoop: OverallTime: 3.2s, OverallIterations: 6, TraceHistogramMax: 2, PathProgramHistogramMax: 2, EmptinessCheckTime: 0.0s, AutomataDifference: 1.5s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 261 SdHoareTripleChecker+Valid, 0.5s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 228 mSDsluCounter, 24 SdHoareTripleChecker+Invalid, 0.4s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 15 mSDsCounter, 42 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 760 IncrementalHoareTripleChecker+Invalid, 802 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 42 mSolverCounterUnsat, 9 mSDtfsCounter, 760 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 86 GetRequests, 59 SyntacticMatches, 1 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 41 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=219occurred in iteration=5, InterpolantAutomatonStates: 30, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 0.6s InterpolantComputationTime, 143 NumberOfCodeBlocks, 143 NumberOfCodeBlocksAsserted, 9 NumberOfCheckSat, 154 ConstructedInterpolants, 0 QuantifiedInterpolants, 329 SizeOfPredicates, 4 NumberOfNonLiveVariables, 493 ConjunctsInSsa, 11 ConjunctsInUnsatCore, 9 InterpolantComputations, 5 PerfectInterpolantSequences, 37/42 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 3 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2024-06-28 02:47:12,390 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: TRUE