./Ultimate.py --spec ../../../trunk/examples/svcomp/properties/unreach-call.prp --file ../../../trunk/examples/svcomp/weaver/test-easy11.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/protection/test-easy11.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/test-easy11.wvr.c ./goblint.2024-06-19_11-23-25.files/protection/test-easy11.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 [2024-06-27 19:43:19,278 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-06-27 19:43:19,340 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-06-27 19:43:19,343 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-06-27 19:43:19,346 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-06-27 19:43:19,362 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-06-27 19:43:19,362 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-06-27 19:43:19,363 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-06-27 19:43:19,363 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-06-27 19:43:19,363 INFO L153 SettingsManager]: * Use memory slicer=true [2024-06-27 19:43:19,364 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-06-27 19:43:19,364 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-06-27 19:43:19,365 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-06-27 19:43:19,367 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-06-27 19:43:19,367 INFO L153 SettingsManager]: * Use SBE=true [2024-06-27 19:43:19,367 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-06-27 19:43:19,367 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-06-27 19:43:19,368 INFO L153 SettingsManager]: * sizeof long=4 [2024-06-27 19:43:19,370 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-06-27 19:43:19,371 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-06-27 19:43:19,371 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-06-27 19:43:19,371 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-06-27 19:43:19,371 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-06-27 19:43:19,372 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-06-27 19:43:19,372 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-06-27 19:43:19,372 INFO L153 SettingsManager]: * sizeof long double=12 [2024-06-27 19:43:19,372 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-06-27 19:43:19,372 INFO L153 SettingsManager]: * Use constant arrays=true [2024-06-27 19:43:19,373 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-06-27 19:43:19,373 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-06-27 19:43:19,373 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-06-27 19:43:19,373 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-06-27 19:43:19,373 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-06-27 19:43:19,374 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-06-27 19:43:19,374 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-06-27 19:43:19,374 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-06-27 19:43:19,375 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-06-27 19:43:19,375 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-06-27 19:43:19,375 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-06-27 19:43:19,375 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-06-27 19:43:19,376 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2024-06-27 19:43:19,376 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-06-27 19:43:19,376 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-06-27 19:43:19,376 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessparser: Only consider loop invariants -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Check unreachability of reach_error function -> false [2024-06-27 19:43:19,595 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-06-27 19:43:19,631 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-06-27 19:43:19,633 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-06-27 19:43:19,634 INFO L270 PluginConnector]: Initializing CDTParser... [2024-06-27 19:43:19,634 INFO L274 PluginConnector]: CDTParser initialized [2024-06-27 19:43:19,635 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/weaver/test-easy11.wvr.c [2024-06-27 19:43:20,696 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-06-27 19:43:20,856 INFO L384 CDTParser]: Found 1 translation units. [2024-06-27 19:43:20,857 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/weaver/test-easy11.wvr.c [2024-06-27 19:43:20,863 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/4257e5af0/ff87a6948e8c4bcbaee4e06ebdb737be/FLAG79e04d5c1 [2024-06-27 19:43:20,879 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/4257e5af0/ff87a6948e8c4bcbaee4e06ebdb737be [2024-06-27 19:43:20,881 INFO L270 PluginConnector]: Initializing Witness Parser... [2024-06-27 19:43:20,882 INFO L274 PluginConnector]: Witness Parser initialized [2024-06-27 19:43:20,882 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/./goblint.2024-06-19_11-23-25.files/protection/test-easy11.wvr.yml/witness.yml [2024-06-27 19:43:20,935 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-06-27 19:43:20,936 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2024-06-27 19:43:20,938 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-06-27 19:43:20,938 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-06-27 19:43:20,941 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-06-27 19:43:20,942 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.06 07:43:20" (1/2) ... [2024-06-27 19:43:20,943 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@221d6646 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 07:43:20, skipping insertion in model container [2024-06-27 19:43:20,943 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.06 07:43:20" (1/2) ... [2024-06-27 19:43:20,944 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@536dc5e9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 07:43:20, skipping insertion in model container [2024-06-27 19:43:20,944 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 27.06 07:43:20" (2/2) ... [2024-06-27 19:43:20,945 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@221d6646 and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 27.06 07:43:20, skipping insertion in model container [2024-06-27 19:43:20,945 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 27.06 07:43:20" (2/2) ... [2024-06-27 19:43:20,945 INFO L83 nessWitnessExtractor]: Extracting all invariants from correctness witness [2024-06-27 19:43:20,957 INFO L95 edCorrectnessWitness]: Found the following entries in the witness: [2024-06-27 19:43:20,959 INFO L97 edCorrectnessWitness]: Location invariant before [L74-L74] ! multithreaded || 0 <= Y [2024-06-27 19:43:20,959 INFO L97 edCorrectnessWitness]: Location invariant before [L75-L75] ! multithreaded || 0 <= Y [2024-06-27 19:43:20,959 INFO L103 edCorrectnessWitness]: ghost_variable multithreaded = 0 [2024-06-27 19:43:20,959 INFO L106 edCorrectnessWitness]: ghost_update [L73-L73] multithreaded = 1; [2024-06-27 19:43:20,975 INFO L177 MainTranslator]: Built tables and reachable declarations [2024-06-27 19:43:21,179 INFO L207 PostProcessor]: Analyzing one entry point: main [2024-06-27 19:43:21,187 INFO L202 MainTranslator]: Completed pre-run Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local [2024-06-27 19:43:21,225 INFO L207 PostProcessor]: Analyzing one entry point: main [2024-06-27 19:43:21,238 INFO L206 MainTranslator]: Completed translation [2024-06-27 19:43:21,239 INFO L201 PluginConnector]: Adding new model witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 27.06 07:43:21 WrapperNode [2024-06-27 19:43:21,239 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-06-27 19:43:21,240 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-06-27 19:43:21,240 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-06-27 19:43:21,240 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-06-27 19:43:21,245 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 27.06 07:43:21" (1/1) ... [2024-06-27 19:43:21,251 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 27.06 07:43:21" (1/1) ... [2024-06-27 19:43:21,268 INFO L138 Inliner]: procedures = 20, calls = 15, calls flagged for inlining = 5, calls inlined = 5, statements flattened = 48 [2024-06-27 19:43:21,268 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-06-27 19:43:21,269 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-06-27 19:43:21,269 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-06-27 19:43:21,270 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-06-27 19:43:21,278 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 27.06 07:43:21" (1/1) ... [2024-06-27 19:43:21,279 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 27.06 07:43:21" (1/1) ... [2024-06-27 19:43:21,290 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 27.06 07:43:21" (1/1) ... [2024-06-27 19:43:21,299 INFO L175 MemorySlicer]: Split 2 memory accesses to 1 slices as follows [2]. 100 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2]. The 0 writes are split as follows [0]. [2024-06-27 19:43:21,300 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 27.06 07:43:21" (1/1) ... [2024-06-27 19:43:21,300 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 27.06 07:43:21" (1/1) ... [2024-06-27 19:43:21,302 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 27.06 07:43:21" (1/1) ... [2024-06-27 19:43:21,304 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 27.06 07:43:21" (1/1) ... [2024-06-27 19:43:21,305 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 27.06 07:43:21" (1/1) ... [2024-06-27 19:43:21,306 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 27.06 07:43:21" (1/1) ... [2024-06-27 19:43:21,307 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-06-27 19:43:21,307 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-06-27 19:43:21,308 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-06-27 19:43:21,308 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-06-27 19:43:21,308 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 27.06 07:43:21" (1/1) ... [2024-06-27 19:43:21,313 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-06-27 19:43:21,318 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-06-27 19:43:21,330 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) [2024-06-27 19:43:21,333 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 [2024-06-27 19:43:21,366 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-06-27 19:43:21,366 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2024-06-27 19:43:21,366 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2024-06-27 19:43:21,367 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2024-06-27 19:43:21,367 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2024-06-27 19:43:21,367 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-06-27 19:43:21,367 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2024-06-27 19:43:21,367 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2024-06-27 19:43:21,367 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-06-27 19:43:21,367 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-06-27 19:43:21,368 WARN L214 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2024-06-27 19:43:21,441 INFO L244 CfgBuilder]: Building ICFG [2024-06-27 19:43:21,444 INFO L270 CfgBuilder]: Building CFG for each procedure with an implementation [2024-06-27 19:43:21,566 INFO L289 CfgBuilder]: Ommited future-live optimization because the input is a concurrent program. [2024-06-27 19:43:21,566 INFO L293 CfgBuilder]: Performing block encoding [2024-06-27 19:43:21,667 INFO L315 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-06-27 19:43:21,667 INFO L320 CfgBuilder]: Removed 2 assume(true) statements. [2024-06-27 19:43:21,668 INFO L201 PluginConnector]: Adding new model witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.06 07:43:21 BoogieIcfgContainer [2024-06-27 19:43:21,668 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-06-27 19:43:21,670 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-06-27 19:43:21,670 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-06-27 19:43:21,672 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-06-27 19:43:21,672 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 27.06 07:43:20" (1/4) ... [2024-06-27 19:43:21,673 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@67106997 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.06 07:43:21, skipping insertion in model container [2024-06-27 19:43:21,673 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 27.06 07:43:20" (2/4) ... [2024-06-27 19:43:21,673 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@67106997 and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CORRECTNESS_WITNESS 27.06 07:43:21, skipping insertion in model container [2024-06-27 19:43:21,673 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 27.06 07:43:21" (3/4) ... [2024-06-27 19:43:21,673 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@67106997 and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CORRECTNESS_WITNESS 27.06 07:43:21, skipping insertion in model container [2024-06-27 19:43:21,673 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.06 07:43:21" (4/4) ... [2024-06-27 19:43:21,674 INFO L112 eAbstractionObserver]: Analyzing ICFG test-easy11.wvr.c [2024-06-27 19:43:21,687 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-06-27 19:43:21,687 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2024-06-27 19:43:21,687 INFO L522 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-06-27 19:43:21,716 INFO L144 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2024-06-27 19:43:21,738 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 30 places, 25 transitions, 64 flow [2024-06-27 19:43:21,755 INFO L124 PetriNetUnfolderBase]: 2/23 cut-off events. [2024-06-27 19:43:21,755 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2024-06-27 19:43:21,757 INFO L83 FinitePrefix]: Finished finitePrefix Result has 32 conditions, 23 events. 2/23 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 26 event pairs, 0 based on Foata normal form. 0/19 useless extension candidates. Maximal degree in co-relation 19. Up to 2 conditions per place. [2024-06-27 19:43:21,757 INFO L82 GeneralOperation]: Start removeDead. Operand has 30 places, 25 transitions, 64 flow [2024-06-27 19:43:21,759 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 26 places, 21 transitions, 51 flow [2024-06-27 19:43:21,765 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-06-27 19:43:21,773 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;@71b641ff, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-06-27 19:43:21,773 INFO L358 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2024-06-27 19:43:21,785 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-06-27 19:43:21,788 INFO L124 PetriNetUnfolderBase]: 1/6 cut-off events. [2024-06-27 19:43:21,788 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-06-27 19:43:21,790 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 19:43:21,790 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2024-06-27 19:43:21,790 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 19:43:21,794 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 19:43:21,796 INFO L85 PathProgramCache]: Analyzing trace with hash 208983299, now seen corresponding path program 1 times [2024-06-27 19:43:21,805 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 19:43:21,806 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [903062070] [2024-06-27 19:43:21,806 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 19:43:21,807 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 19:43:21,875 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 19:43:21,973 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 19:43:21,974 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 19:43:21,974 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [903062070] [2024-06-27 19:43:21,975 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [903062070] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 19:43:21,975 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 19:43:21,975 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-06-27 19:43:21,976 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2114059959] [2024-06-27 19:43:21,978 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 19:43:21,984 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-06-27 19:43:21,989 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 19:43:22,013 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-06-27 19:43:22,014 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-06-27 19:43:22,036 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 25 [2024-06-27 19:43:22,039 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 26 places, 21 transitions, 51 flow. Second operand has 3 states, 3 states have (on average 5.333333333333333) internal successors, (16), 3 states have internal predecessors, (16), 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) [2024-06-27 19:43:22,039 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 19:43:22,039 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 25 [2024-06-27 19:43:22,040 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 19:43:22,142 INFO L124 PetriNetUnfolderBase]: 123/219 cut-off events. [2024-06-27 19:43:22,142 INFO L125 PetriNetUnfolderBase]: For 12/12 co-relation queries the response was YES. [2024-06-27 19:43:22,157 INFO L83 FinitePrefix]: Finished finitePrefix Result has 452 conditions, 219 events. 123/219 cut-off events. For 12/12 co-relation queries the response was YES. Maximal size of possible extension queue 15. Compared 662 event pairs, 41 based on Foata normal form. 9/198 useless extension candidates. Maximal degree in co-relation 416. Up to 148 conditions per place. [2024-06-27 19:43:22,160 INFO L140 encePairwiseOnDemand]: 20/25 looper letters, 27 selfloop transitions, 3 changer transitions 1/33 dead transitions. [2024-06-27 19:43:22,160 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 28 places, 33 transitions, 140 flow [2024-06-27 19:43:22,162 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-06-27 19:43:22,164 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-06-27 19:43:22,170 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 45 transitions. [2024-06-27 19:43:22,171 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6 [2024-06-27 19:43:22,173 INFO L175 Difference]: Start difference. First operand has 26 places, 21 transitions, 51 flow. Second operand 3 states and 45 transitions. [2024-06-27 19:43:22,174 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 28 places, 33 transitions, 140 flow [2024-06-27 19:43:22,175 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 25 places, 33 transitions, 134 flow, removed 0 selfloop flow, removed 3 redundant places. [2024-06-27 19:43:22,178 INFO L231 Difference]: Finished difference. Result has 26 places, 22 transitions, 64 flow [2024-06-27 19:43:22,180 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=25, PETRI_DIFFERENCE_MINUEND_FLOW=46, PETRI_DIFFERENCE_MINUEND_PLACES=23, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=21, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=18, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=64, PETRI_PLACES=26, PETRI_TRANSITIONS=22} [2024-06-27 19:43:22,183 INFO L281 CegarLoopForPetriNet]: 26 programPoint places, 0 predicate places. [2024-06-27 19:43:22,183 INFO L495 AbstractCegarLoop]: Abstraction has has 26 places, 22 transitions, 64 flow [2024-06-27 19:43:22,183 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 5.333333333333333) internal successors, (16), 3 states have internal predecessors, (16), 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) [2024-06-27 19:43:22,183 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 19:43:22,184 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 19:43:22,184 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-06-27 19:43:22,184 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 19:43:22,187 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 19:43:22,187 INFO L85 PathProgramCache]: Analyzing trace with hash -1876780125, now seen corresponding path program 1 times [2024-06-27 19:43:22,187 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 19:43:22,187 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1924722377] [2024-06-27 19:43:22,188 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 19:43:22,188 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 19:43:22,216 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 19:43:22,304 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 19:43:22,305 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 19:43:22,305 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1924722377] [2024-06-27 19:43:22,305 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1924722377] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 19:43:22,305 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 19:43:22,306 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-06-27 19:43:22,306 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [227041171] [2024-06-27 19:43:22,306 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 19:43:22,307 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-06-27 19:43:22,308 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 19:43:22,309 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-06-27 19:43:22,309 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-06-27 19:43:22,321 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 25 [2024-06-27 19:43:22,321 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 26 places, 22 transitions, 64 flow. Second operand has 5 states, 5 states have (on average 5.4) internal successors, (27), 5 states have internal predecessors, (27), 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) [2024-06-27 19:43:22,321 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 19:43:22,321 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 25 [2024-06-27 19:43:22,321 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 19:43:22,438 INFO L124 PetriNetUnfolderBase]: 106/187 cut-off events. [2024-06-27 19:43:22,439 INFO L125 PetriNetUnfolderBase]: For 15/15 co-relation queries the response was YES. [2024-06-27 19:43:22,439 INFO L83 FinitePrefix]: Finished finitePrefix Result has 435 conditions, 187 events. 106/187 cut-off events. For 15/15 co-relation queries the response was YES. Maximal size of possible extension queue 12. Compared 528 event pairs, 17 based on Foata normal form. 8/170 useless extension candidates. Maximal degree in co-relation 280. Up to 76 conditions per place. [2024-06-27 19:43:22,441 INFO L140 encePairwiseOnDemand]: 19/25 looper letters, 33 selfloop transitions, 6 changer transitions 0/41 dead transitions. [2024-06-27 19:43:22,441 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 28 places, 41 transitions, 185 flow [2024-06-27 19:43:22,441 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-06-27 19:43:22,441 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-06-27 19:43:22,442 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 61 transitions. [2024-06-27 19:43:22,442 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.488 [2024-06-27 19:43:22,442 INFO L175 Difference]: Start difference. First operand has 26 places, 22 transitions, 64 flow. Second operand 5 states and 61 transitions. [2024-06-27 19:43:22,443 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 28 places, 41 transitions, 185 flow [2024-06-27 19:43:22,443 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 27 places, 41 transitions, 181 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-06-27 19:43:22,444 INFO L231 Difference]: Finished difference. Result has 29 places, 23 transitions, 84 flow [2024-06-27 19:43:22,444 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=25, PETRI_DIFFERENCE_MINUEND_FLOW=57, PETRI_DIFFERENCE_MINUEND_PLACES=23, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=21, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=16, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=84, PETRI_PLACES=29, PETRI_TRANSITIONS=23} [2024-06-27 19:43:22,445 INFO L281 CegarLoopForPetriNet]: 26 programPoint places, 3 predicate places. [2024-06-27 19:43:22,445 INFO L495 AbstractCegarLoop]: Abstraction has has 29 places, 23 transitions, 84 flow [2024-06-27 19:43:22,446 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 5.4) internal successors, (27), 5 states have internal predecessors, (27), 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) [2024-06-27 19:43:22,446 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 19:43:22,446 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 19:43:22,446 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-06-27 19:43:22,446 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 19:43:22,447 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 19:43:22,447 INFO L85 PathProgramCache]: Analyzing trace with hash -1228768970, now seen corresponding path program 1 times [2024-06-27 19:43:22,447 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 19:43:22,447 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [76589970] [2024-06-27 19:43:22,447 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 19:43:22,448 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 19:43:22,458 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 19:43:22,549 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 19:43:22,550 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 19:43:22,550 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [76589970] [2024-06-27 19:43:22,551 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [76589970] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 19:43:22,551 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 19:43:22,551 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-06-27 19:43:22,551 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [663006395] [2024-06-27 19:43:22,551 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 19:43:22,551 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-06-27 19:43:22,552 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 19:43:22,552 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-06-27 19:43:22,553 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-06-27 19:43:22,568 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 25 [2024-06-27 19:43:22,569 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 29 places, 23 transitions, 84 flow. Second operand has 5 states, 5 states have (on average 6.0) internal successors, (30), 5 states have internal predecessors, (30), 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) [2024-06-27 19:43:22,569 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 19:43:22,569 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 25 [2024-06-27 19:43:22,569 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 19:43:22,642 INFO L124 PetriNetUnfolderBase]: 95/172 cut-off events. [2024-06-27 19:43:22,642 INFO L125 PetriNetUnfolderBase]: For 84/84 co-relation queries the response was YES. [2024-06-27 19:43:22,643 INFO L83 FinitePrefix]: Finished finitePrefix Result has 436 conditions, 172 events. 95/172 cut-off events. For 84/84 co-relation queries the response was YES. Maximal size of possible extension queue 13. Compared 465 event pairs, 25 based on Foata normal form. 6/168 useless extension candidates. Maximal degree in co-relation 256. Up to 71 conditions per place. [2024-06-27 19:43:22,644 INFO L140 encePairwiseOnDemand]: 20/25 looper letters, 30 selfloop transitions, 7 changer transitions 0/39 dead transitions. [2024-06-27 19:43:22,644 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 33 places, 39 transitions, 200 flow [2024-06-27 19:43:22,644 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-06-27 19:43:22,645 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-06-27 19:43:22,645 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 57 transitions. [2024-06-27 19:43:22,645 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.456 [2024-06-27 19:43:22,645 INFO L175 Difference]: Start difference. First operand has 29 places, 23 transitions, 84 flow. Second operand 5 states and 57 transitions. [2024-06-27 19:43:22,646 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 33 places, 39 transitions, 200 flow [2024-06-27 19:43:22,647 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 31 places, 39 transitions, 189 flow, removed 1 selfloop flow, removed 2 redundant places. [2024-06-27 19:43:22,647 INFO L231 Difference]: Finished difference. Result has 33 places, 25 transitions, 106 flow [2024-06-27 19:43:22,647 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=25, PETRI_DIFFERENCE_MINUEND_FLOW=74, PETRI_DIFFERENCE_MINUEND_PLACES=27, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=23, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=17, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=106, PETRI_PLACES=33, PETRI_TRANSITIONS=25} [2024-06-27 19:43:22,648 INFO L281 CegarLoopForPetriNet]: 26 programPoint places, 7 predicate places. [2024-06-27 19:43:22,648 INFO L495 AbstractCegarLoop]: Abstraction has has 33 places, 25 transitions, 106 flow [2024-06-27 19:43:22,648 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 6.0) internal successors, (30), 5 states have internal predecessors, (30), 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) [2024-06-27 19:43:22,648 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 19:43:22,649 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 19:43:22,649 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-06-27 19:43:22,649 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 19:43:22,649 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 19:43:22,649 INFO L85 PathProgramCache]: Analyzing trace with hash -1808740102, now seen corresponding path program 1 times [2024-06-27 19:43:22,650 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 19:43:22,650 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [650278697] [2024-06-27 19:43:22,650 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 19:43:22,650 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 19:43:22,658 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 19:43:22,715 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 19:43:22,715 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 19:43:22,715 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [650278697] [2024-06-27 19:43:22,715 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [650278697] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 19:43:22,715 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 19:43:22,716 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-27 19:43:22,716 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1144225126] [2024-06-27 19:43:22,716 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 19:43:22,716 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-27 19:43:22,717 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 19:43:22,717 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-27 19:43:22,717 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2024-06-27 19:43:22,726 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 25 [2024-06-27 19:43:22,726 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 33 places, 25 transitions, 106 flow. Second operand has 7 states, 7 states have (on average 5.857142857142857) internal successors, (41), 7 states have internal predecessors, (41), 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) [2024-06-27 19:43:22,727 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 19:43:22,727 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 25 [2024-06-27 19:43:22,727 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 19:43:22,815 INFO L124 PetriNetUnfolderBase]: 103/190 cut-off events. [2024-06-27 19:43:22,816 INFO L125 PetriNetUnfolderBase]: For 72/72 co-relation queries the response was YES. [2024-06-27 19:43:22,817 INFO L83 FinitePrefix]: Finished finitePrefix Result has 516 conditions, 190 events. 103/190 cut-off events. For 72/72 co-relation queries the response was YES. Maximal size of possible extension queue 12. Compared 558 event pairs, 16 based on Foata normal form. 4/194 useless extension candidates. Maximal degree in co-relation 364. Up to 59 conditions per place. [2024-06-27 19:43:22,817 INFO L140 encePairwiseOnDemand]: 19/25 looper letters, 27 selfloop transitions, 6 changer transitions 13/48 dead transitions. [2024-06-27 19:43:22,817 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 39 places, 48 transitions, 253 flow [2024-06-27 19:43:22,818 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-27 19:43:22,818 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-27 19:43:22,818 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 74 transitions. [2024-06-27 19:43:22,819 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4228571428571429 [2024-06-27 19:43:22,819 INFO L175 Difference]: Start difference. First operand has 33 places, 25 transitions, 106 flow. Second operand 7 states and 74 transitions. [2024-06-27 19:43:22,819 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 39 places, 48 transitions, 253 flow [2024-06-27 19:43:22,820 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 38 places, 48 transitions, 247 flow, removed 1 selfloop flow, removed 1 redundant places. [2024-06-27 19:43:22,821 INFO L231 Difference]: Finished difference. Result has 39 places, 23 transitions, 102 flow [2024-06-27 19:43:22,821 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=25, PETRI_DIFFERENCE_MINUEND_FLOW=100, PETRI_DIFFERENCE_MINUEND_PLACES=32, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=25, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=19, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=102, PETRI_PLACES=39, PETRI_TRANSITIONS=23} [2024-06-27 19:43:22,822 INFO L281 CegarLoopForPetriNet]: 26 programPoint places, 13 predicate places. [2024-06-27 19:43:22,822 INFO L495 AbstractCegarLoop]: Abstraction has has 39 places, 23 transitions, 102 flow [2024-06-27 19:43:22,822 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 5.857142857142857) internal successors, (41), 7 states have internal predecessors, (41), 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) [2024-06-27 19:43:22,822 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 19:43:22,822 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 19:43:22,822 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-06-27 19:43:22,823 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 19:43:22,823 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 19:43:22,823 INFO L85 PathProgramCache]: Analyzing trace with hash 1944471586, now seen corresponding path program 2 times [2024-06-27 19:43:22,823 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 19:43:22,823 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [967994451] [2024-06-27 19:43:22,824 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 19:43:22,824 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 19:43:22,831 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 19:43:22,905 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 19:43:22,906 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 19:43:22,906 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [967994451] [2024-06-27 19:43:22,906 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [967994451] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 19:43:22,907 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 19:43:22,907 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-27 19:43:22,907 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [459945545] [2024-06-27 19:43:22,907 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 19:43:22,908 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-27 19:43:22,908 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 19:43:22,908 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-27 19:43:22,909 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2024-06-27 19:43:22,919 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 25 [2024-06-27 19:43:22,920 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 39 places, 23 transitions, 102 flow. Second operand has 7 states, 7 states have (on average 5.857142857142857) internal successors, (41), 7 states have internal predecessors, (41), 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) [2024-06-27 19:43:22,920 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 19:43:22,920 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 25 [2024-06-27 19:43:22,920 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 19:43:22,995 INFO L124 PetriNetUnfolderBase]: 84/161 cut-off events. [2024-06-27 19:43:22,995 INFO L125 PetriNetUnfolderBase]: For 142/142 co-relation queries the response was YES. [2024-06-27 19:43:22,996 INFO L83 FinitePrefix]: Finished finitePrefix Result has 449 conditions, 161 events. 84/161 cut-off events. For 142/142 co-relation queries the response was YES. Maximal size of possible extension queue 11. Compared 431 event pairs, 23 based on Foata normal form. 4/165 useless extension candidates. Maximal degree in co-relation 408. Up to 67 conditions per place. [2024-06-27 19:43:22,996 INFO L140 encePairwiseOnDemand]: 19/25 looper letters, 23 selfloop transitions, 7 changer transitions 7/39 dead transitions. [2024-06-27 19:43:22,997 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 43 places, 39 transitions, 229 flow [2024-06-27 19:43:22,997 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-27 19:43:22,997 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-27 19:43:22,997 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 65 transitions. [2024-06-27 19:43:22,998 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.37142857142857144 [2024-06-27 19:43:22,998 INFO L175 Difference]: Start difference. First operand has 39 places, 23 transitions, 102 flow. Second operand 7 states and 65 transitions. [2024-06-27 19:43:22,998 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 43 places, 39 transitions, 229 flow [2024-06-27 19:43:22,999 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 35 places, 39 transitions, 200 flow, removed 1 selfloop flow, removed 8 redundant places. [2024-06-27 19:43:22,999 INFO L231 Difference]: Finished difference. Result has 38 places, 25 transitions, 117 flow [2024-06-27 19:43:23,000 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=25, PETRI_DIFFERENCE_MINUEND_FLOW=80, PETRI_DIFFERENCE_MINUEND_PLACES=29, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=23, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=17, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=117, PETRI_PLACES=38, PETRI_TRANSITIONS=25} [2024-06-27 19:43:23,000 INFO L281 CegarLoopForPetriNet]: 26 programPoint places, 12 predicate places. [2024-06-27 19:43:23,000 INFO L495 AbstractCegarLoop]: Abstraction has has 38 places, 25 transitions, 117 flow [2024-06-27 19:43:23,001 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 5.857142857142857) internal successors, (41), 7 states have internal predecessors, (41), 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) [2024-06-27 19:43:23,001 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 19:43:23,001 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 19:43:23,001 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-06-27 19:43:23,001 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 19:43:23,002 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 19:43:23,002 INFO L85 PathProgramCache]: Analyzing trace with hash -1808620132, now seen corresponding path program 3 times [2024-06-27 19:43:23,002 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 19:43:23,002 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1251595425] [2024-06-27 19:43:23,002 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 19:43:23,002 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 19:43:23,017 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 19:43:23,062 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 19:43:23,063 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 19:43:23,063 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1251595425] [2024-06-27 19:43:23,063 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1251595425] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 19:43:23,063 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 19:43:23,063 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-27 19:43:23,063 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [968584135] [2024-06-27 19:43:23,063 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 19:43:23,064 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-27 19:43:23,064 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 19:43:23,064 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-27 19:43:23,064 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2024-06-27 19:43:23,074 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 25 [2024-06-27 19:43:23,074 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 38 places, 25 transitions, 117 flow. Second operand has 7 states, 7 states have (on average 5.857142857142857) internal successors, (41), 7 states have internal predecessors, (41), 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) [2024-06-27 19:43:23,074 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 19:43:23,074 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 25 [2024-06-27 19:43:23,074 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 19:43:23,145 INFO L124 PetriNetUnfolderBase]: 82/157 cut-off events. [2024-06-27 19:43:23,145 INFO L125 PetriNetUnfolderBase]: For 123/123 co-relation queries the response was YES. [2024-06-27 19:43:23,145 INFO L83 FinitePrefix]: Finished finitePrefix Result has 445 conditions, 157 events. 82/157 cut-off events. For 123/123 co-relation queries the response was YES. Maximal size of possible extension queue 12. Compared 432 event pairs, 16 based on Foata normal form. 4/161 useless extension candidates. Maximal degree in co-relation 403. Up to 57 conditions per place. [2024-06-27 19:43:23,146 INFO L140 encePairwiseOnDemand]: 19/25 looper letters, 27 selfloop transitions, 8 changer transitions 6/43 dead transitions. [2024-06-27 19:43:23,146 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 42 places, 43 transitions, 244 flow [2024-06-27 19:43:23,146 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-27 19:43:23,147 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-27 19:43:23,147 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 69 transitions. [2024-06-27 19:43:23,147 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3942857142857143 [2024-06-27 19:43:23,147 INFO L175 Difference]: Start difference. First operand has 38 places, 25 transitions, 117 flow. Second operand 7 states and 69 transitions. [2024-06-27 19:43:23,147 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 42 places, 43 transitions, 244 flow [2024-06-27 19:43:23,148 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 37 places, 43 transitions, 224 flow, removed 3 selfloop flow, removed 5 redundant places. [2024-06-27 19:43:23,149 INFO L231 Difference]: Finished difference. Result has 40 places, 25 transitions, 126 flow [2024-06-27 19:43:23,149 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=25, PETRI_DIFFERENCE_MINUEND_FLOW=101, PETRI_DIFFERENCE_MINUEND_PLACES=31, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=25, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=17, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=126, PETRI_PLACES=40, PETRI_TRANSITIONS=25} [2024-06-27 19:43:23,150 INFO L281 CegarLoopForPetriNet]: 26 programPoint places, 14 predicate places. [2024-06-27 19:43:23,150 INFO L495 AbstractCegarLoop]: Abstraction has has 40 places, 25 transitions, 126 flow [2024-06-27 19:43:23,150 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 5.857142857142857) internal successors, (41), 7 states have internal predecessors, (41), 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) [2024-06-27 19:43:23,150 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 19:43:23,150 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 19:43:23,151 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-06-27 19:43:23,151 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 19:43:23,151 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 19:43:23,151 INFO L85 PathProgramCache]: Analyzing trace with hash 1939998286, now seen corresponding path program 4 times [2024-06-27 19:43:23,151 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 19:43:23,152 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1390099448] [2024-06-27 19:43:23,152 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 19:43:23,152 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 19:43:23,157 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 19:43:23,224 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 19:43:23,224 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 19:43:23,224 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1390099448] [2024-06-27 19:43:23,225 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1390099448] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 19:43:23,225 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 19:43:23,225 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-27 19:43:23,225 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [593740123] [2024-06-27 19:43:23,225 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 19:43:23,225 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-27 19:43:23,226 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 19:43:23,226 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-27 19:43:23,226 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2024-06-27 19:43:23,238 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 25 [2024-06-27 19:43:23,238 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 40 places, 25 transitions, 126 flow. Second operand has 7 states, 7 states have (on average 5.857142857142857) internal successors, (41), 7 states have internal predecessors, (41), 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) [2024-06-27 19:43:23,238 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 19:43:23,239 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 25 [2024-06-27 19:43:23,239 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 19:43:23,306 INFO L124 PetriNetUnfolderBase]: 80/155 cut-off events. [2024-06-27 19:43:23,306 INFO L125 PetriNetUnfolderBase]: For 180/180 co-relation queries the response was YES. [2024-06-27 19:43:23,306 INFO L83 FinitePrefix]: Finished finitePrefix Result has 459 conditions, 155 events. 80/155 cut-off events. For 180/180 co-relation queries the response was YES. Maximal size of possible extension queue 11. Compared 422 event pairs, 22 based on Foata normal form. 4/159 useless extension candidates. Maximal degree in co-relation 416. Up to 63 conditions per place. [2024-06-27 19:43:23,307 INFO L140 encePairwiseOnDemand]: 19/25 looper letters, 20 selfloop transitions, 4 changer transitions 15/41 dead transitions. [2024-06-27 19:43:23,307 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 45 places, 41 transitions, 242 flow [2024-06-27 19:43:23,307 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-27 19:43:23,307 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-27 19:43:23,308 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 67 transitions. [2024-06-27 19:43:23,308 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.38285714285714284 [2024-06-27 19:43:23,308 INFO L175 Difference]: Start difference. First operand has 40 places, 25 transitions, 126 flow. Second operand 7 states and 67 transitions. [2024-06-27 19:43:23,308 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 45 places, 41 transitions, 242 flow [2024-06-27 19:43:23,309 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 39 places, 41 transitions, 218 flow, removed 2 selfloop flow, removed 6 redundant places. [2024-06-27 19:43:23,310 INFO L231 Difference]: Finished difference. Result has 41 places, 22 transitions, 95 flow [2024-06-27 19:43:23,310 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=25, PETRI_DIFFERENCE_MINUEND_FLOW=105, PETRI_DIFFERENCE_MINUEND_PLACES=33, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=25, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=21, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=95, PETRI_PLACES=41, PETRI_TRANSITIONS=22} [2024-06-27 19:43:23,310 INFO L281 CegarLoopForPetriNet]: 26 programPoint places, 15 predicate places. [2024-06-27 19:43:23,310 INFO L495 AbstractCegarLoop]: Abstraction has has 41 places, 22 transitions, 95 flow [2024-06-27 19:43:23,311 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 5.857142857142857) internal successors, (41), 7 states have internal predecessors, (41), 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) [2024-06-27 19:43:23,311 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 19:43:23,311 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 19:43:23,311 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-06-27 19:43:23,311 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 19:43:23,312 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 19:43:23,312 INFO L85 PathProgramCache]: Analyzing trace with hash 1944644566, now seen corresponding path program 5 times [2024-06-27 19:43:23,312 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 19:43:23,312 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [657329013] [2024-06-27 19:43:23,312 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 19:43:23,312 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 19:43:23,317 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 19:43:23,365 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 19:43:23,365 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 19:43:23,365 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [657329013] [2024-06-27 19:43:23,365 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [657329013] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 19:43:23,365 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 19:43:23,366 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-27 19:43:23,366 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1711292631] [2024-06-27 19:43:23,366 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 19:43:23,366 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-27 19:43:23,366 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 19:43:23,367 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-27 19:43:23,367 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2024-06-27 19:43:23,380 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 25 [2024-06-27 19:43:23,380 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 41 places, 22 transitions, 95 flow. Second operand has 7 states, 7 states have (on average 5.857142857142857) internal successors, (41), 7 states have internal predecessors, (41), 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) [2024-06-27 19:43:23,380 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 19:43:23,380 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 25 [2024-06-27 19:43:23,381 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 19:43:23,447 INFO L124 PetriNetUnfolderBase]: 64/126 cut-off events. [2024-06-27 19:43:23,447 INFO L125 PetriNetUnfolderBase]: For 94/94 co-relation queries the response was YES. [2024-06-27 19:43:23,448 INFO L83 FinitePrefix]: Finished finitePrefix Result has 339 conditions, 126 events. 64/126 cut-off events. For 94/94 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 297 event pairs, 16 based on Foata normal form. 4/130 useless extension candidates. Maximal degree in co-relation 296. Up to 34 conditions per place. [2024-06-27 19:43:23,448 INFO L140 encePairwiseOnDemand]: 19/25 looper letters, 18 selfloop transitions, 3 changer transitions 12/35 dead transitions. [2024-06-27 19:43:23,448 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 43 places, 35 transitions, 187 flow [2024-06-27 19:43:23,449 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-27 19:43:23,449 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-27 19:43:23,449 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 62 transitions. [2024-06-27 19:43:23,451 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.35428571428571426 [2024-06-27 19:43:23,451 INFO L175 Difference]: Start difference. First operand has 41 places, 22 transitions, 95 flow. Second operand 7 states and 62 transitions. [2024-06-27 19:43:23,451 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 43 places, 35 transitions, 187 flow [2024-06-27 19:43:23,452 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 34 places, 35 transitions, 163 flow, removed 3 selfloop flow, removed 9 redundant places. [2024-06-27 19:43:23,453 INFO L231 Difference]: Finished difference. Result has 35 places, 19 transitions, 65 flow [2024-06-27 19:43:23,454 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=25, PETRI_DIFFERENCE_MINUEND_FLOW=71, PETRI_DIFFERENCE_MINUEND_PLACES=28, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=22, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=19, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=65, PETRI_PLACES=35, PETRI_TRANSITIONS=19} [2024-06-27 19:43:23,456 INFO L281 CegarLoopForPetriNet]: 26 programPoint places, 9 predicate places. [2024-06-27 19:43:23,457 INFO L495 AbstractCegarLoop]: Abstraction has has 35 places, 19 transitions, 65 flow [2024-06-27 19:43:23,457 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 5.857142857142857) internal successors, (41), 7 states have internal predecessors, (41), 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) [2024-06-27 19:43:23,457 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 19:43:23,457 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 19:43:23,457 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-06-27 19:43:23,458 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 19:43:23,458 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 19:43:23,458 INFO L85 PathProgramCache]: Analyzing trace with hash 1944466936, now seen corresponding path program 6 times [2024-06-27 19:43:23,458 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 19:43:23,459 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [617783637] [2024-06-27 19:43:23,459 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 19:43:23,459 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 19:43:23,470 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 19:43:23,511 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 19:43:23,511 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 19:43:23,511 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [617783637] [2024-06-27 19:43:23,511 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [617783637] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 19:43:23,511 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 19:43:23,511 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-27 19:43:23,512 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1831738904] [2024-06-27 19:43:23,512 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 19:43:23,512 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-27 19:43:23,512 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 19:43:23,513 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-27 19:43:23,513 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2024-06-27 19:43:23,524 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 25 [2024-06-27 19:43:23,524 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 35 places, 19 transitions, 65 flow. Second operand has 7 states, 7 states have (on average 5.857142857142857) internal successors, (41), 7 states have internal predecessors, (41), 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) [2024-06-27 19:43:23,524 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 19:43:23,525 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 25 [2024-06-27 19:43:23,525 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 19:43:23,572 INFO L124 PetriNetUnfolderBase]: 36/74 cut-off events. [2024-06-27 19:43:23,572 INFO L125 PetriNetUnfolderBase]: For 36/36 co-relation queries the response was YES. [2024-06-27 19:43:23,572 INFO L83 FinitePrefix]: Finished finitePrefix Result has 175 conditions, 74 events. 36/74 cut-off events. For 36/36 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 122 event pairs, 8 based on Foata normal form. 4/78 useless extension candidates. Maximal degree in co-relation 167. Up to 34 conditions per place. [2024-06-27 19:43:23,572 INFO L140 encePairwiseOnDemand]: 19/25 looper letters, 0 selfloop transitions, 0 changer transitions 25/25 dead transitions. [2024-06-27 19:43:23,572 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 36 places, 25 transitions, 115 flow [2024-06-27 19:43:23,573 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-27 19:43:23,573 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-27 19:43:23,573 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 52 transitions. [2024-06-27 19:43:23,573 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.29714285714285715 [2024-06-27 19:43:23,573 INFO L175 Difference]: Start difference. First operand has 35 places, 19 transitions, 65 flow. Second operand 7 states and 52 transitions. [2024-06-27 19:43:23,574 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 36 places, 25 transitions, 115 flow [2024-06-27 19:43:23,574 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 29 places, 25 transitions, 101 flow, removed 0 selfloop flow, removed 7 redundant places. [2024-06-27 19:43:23,574 INFO L231 Difference]: Finished difference. Result has 29 places, 0 transitions, 0 flow [2024-06-27 19:43:23,574 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=25, PETRI_DIFFERENCE_MINUEND_FLOW=41, PETRI_DIFFERENCE_MINUEND_PLACES=23, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=18, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=18, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=0, PETRI_PLACES=29, PETRI_TRANSITIONS=0} [2024-06-27 19:43:23,575 INFO L281 CegarLoopForPetriNet]: 26 programPoint places, 3 predicate places. [2024-06-27 19:43:23,575 INFO L495 AbstractCegarLoop]: Abstraction has has 29 places, 0 transitions, 0 flow [2024-06-27 19:43:23,575 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 5.857142857142857) internal successors, (41), 7 states have internal predecessors, (41), 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) [2024-06-27 19:43:23,577 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT (3 of 4 remaining) [2024-06-27 19:43:23,578 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (2 of 4 remaining) [2024-06-27 19:43:23,579 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 4 remaining) [2024-06-27 19:43:23,580 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 4 remaining) [2024-06-27 19:43:23,580 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-06-27 19:43:23,580 INFO L445 BasicCegarLoop]: Path program histogram: [6, 1, 1, 1] [2024-06-27 19:43:23,582 INFO L229 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2024-06-27 19:43:23,582 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2024-06-27 19:43:23,588 INFO L507 ceAbstractionStarter]: Automizer considered 2 witness invariants [2024-06-27 19:43:23,588 INFO L508 ceAbstractionStarter]: WitnessConsidered=2 [2024-06-27 19:43:23,589 INFO L201 PluginConnector]: Adding new model witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 27.06 07:43:23 BasicIcfg [2024-06-27 19:43:23,589 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2024-06-27 19:43:23,589 INFO L158 Benchmark]: Toolchain (without parser) took 2653.01ms. Allocated memory is still 165.7MB. Free memory was 95.2MB in the beginning and 76.1MB in the end (delta: 19.1MB). Peak memory consumption was 20.0MB. Max. memory is 16.1GB. [2024-06-27 19:43:23,589 INFO L158 Benchmark]: CDTParser took 0.15ms. Allocated memory is still 109.1MB. Free memory is still 70.9MB. There was no memory consumed. Max. memory is 16.1GB. [2024-06-27 19:43:23,590 INFO L158 Benchmark]: Witness Parser took 0.17ms. Allocated memory is still 165.7MB. Free memory is still 97.8MB. There was no memory consumed. Max. memory is 16.1GB. [2024-06-27 19:43:23,590 INFO L158 Benchmark]: CACSL2BoogieTranslator took 301.92ms. Allocated memory is still 165.7MB. Free memory was 95.0MB in the beginning and 128.7MB in the end (delta: -33.7MB). Peak memory consumption was 6.3MB. Max. memory is 16.1GB. [2024-06-27 19:43:23,590 INFO L158 Benchmark]: Boogie Procedure Inliner took 28.20ms. Allocated memory is still 165.7MB. Free memory was 128.7MB in the beginning and 127.3MB in the end (delta: 1.4MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2024-06-27 19:43:23,590 INFO L158 Benchmark]: Boogie Preprocessor took 37.67ms. Allocated memory is still 165.7MB. Free memory was 127.3MB in the beginning and 125.2MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2024-06-27 19:43:23,590 INFO L158 Benchmark]: RCFGBuilder took 360.63ms. Allocated memory is still 165.7MB. Free memory was 125.2MB in the beginning and 105.1MB in the end (delta: 20.1MB). Peak memory consumption was 18.9MB. Max. memory is 16.1GB. [2024-06-27 19:43:23,591 INFO L158 Benchmark]: TraceAbstraction took 1919.44ms. Allocated memory is still 165.7MB. Free memory was 104.2MB in the beginning and 76.1MB in the end (delta: 28.1MB). Peak memory consumption was 28.7MB. Max. memory is 16.1GB. [2024-06-27 19:43:23,593 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.15ms. Allocated memory is still 109.1MB. Free memory is still 70.9MB. There was no memory consumed. Max. memory is 16.1GB. * Witness Parser took 0.17ms. Allocated memory is still 165.7MB. Free memory is still 97.8MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 301.92ms. Allocated memory is still 165.7MB. Free memory was 95.0MB in the beginning and 128.7MB in the end (delta: -33.7MB). Peak memory consumption was 6.3MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 28.20ms. Allocated memory is still 165.7MB. Free memory was 128.7MB in the beginning and 127.3MB in the end (delta: 1.4MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 37.67ms. Allocated memory is still 165.7MB. Free memory was 127.3MB in the beginning and 125.2MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 360.63ms. Allocated memory is still 165.7MB. Free memory was 125.2MB in the beginning and 105.1MB in the end (delta: 20.1MB). Peak memory consumption was 18.9MB. Max. memory is 16.1GB. * TraceAbstraction took 1919.44ms. Allocated memory is still 165.7MB. Free memory was 104.2MB in the beginning and 76.1MB in the end (delta: 28.1MB). Peak memory consumption was 28.7MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 74]: invariant of correctness witness holds For all program executions holds that invariant of correctness witness holds at this location - PositiveResult [Line: 75]: 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 5 procedures, 36 locations, 4 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 0.0s, RemoveRedundantFlowTime: 0.0s, RemoveRedundantFlowUnfoldingTime: 0.0s, BackfoldingTime: 0.0s, BackfoldingUnfoldingTime: 0.0s, FlowIncreaseByBackfolding: 0, BasicCegarLoop: OverallTime: 1.8s, OverallIterations: 9, TraceHistogramMax: 1, PathProgramHistogramMax: 6, EmptinessCheckTime: 0.0s, AutomataDifference: 0.9s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 235 SdHoareTripleChecker+Valid, 0.5s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 199 mSDsluCounter, 9 SdHoareTripleChecker+Invalid, 0.4s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 0 mSDsCounter, 18 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 1170 IncrementalHoareTripleChecker+Invalid, 1188 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 18 mSolverCounterUnsat, 9 mSDtfsCounter, 1170 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 43 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 43 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 26 ImplicationChecksByTransitivity, 0.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=126occurred in iteration=6, InterpolantAutomatonStates: 55, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.6s InterpolantComputationTime, 108 NumberOfCodeBlocks, 108 NumberOfCodeBlocksAsserted, 9 NumberOfCheckSat, 99 ConstructedInterpolants, 0 QuantifiedInterpolants, 397 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 9 InterpolantComputations, 9 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 2 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2024-06-27 19:43:23,623 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