./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/mutex-meet-nonrel/test-easy11.wvr.yml/witness.yml --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version eb4cb34f 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/mutex-meet-nonrel/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-eb4cb34-m [2024-06-21 20:27:56,328 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-06-21 20:27:56,398 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-06-21 20:27:56,404 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-06-21 20:27:56,405 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-06-21 20:27:56,425 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-06-21 20:27:56,425 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-06-21 20:27:56,426 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-06-21 20:27:56,426 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-06-21 20:27:56,430 INFO L153 SettingsManager]: * Use memory slicer=true [2024-06-21 20:27:56,430 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-06-21 20:27:56,431 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-06-21 20:27:56,432 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-06-21 20:27:56,433 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-06-21 20:27:56,433 INFO L153 SettingsManager]: * Use SBE=true [2024-06-21 20:27:56,433 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-06-21 20:27:56,433 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-06-21 20:27:56,434 INFO L153 SettingsManager]: * sizeof long=4 [2024-06-21 20:27:56,434 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-06-21 20:27:56,434 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-06-21 20:27:56,434 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-06-21 20:27:56,435 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-06-21 20:27:56,435 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-06-21 20:27:56,435 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-06-21 20:27:56,436 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-06-21 20:27:56,436 INFO L153 SettingsManager]: * sizeof long double=12 [2024-06-21 20:27:56,436 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-06-21 20:27:56,436 INFO L153 SettingsManager]: * Use constant arrays=true [2024-06-21 20:27:56,437 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-06-21 20:27:56,437 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-06-21 20:27:56,438 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-06-21 20:27:56,438 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-06-21 20:27:56,439 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-06-21 20:27:56,439 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-06-21 20:27:56,439 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-06-21 20:27:56,439 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-06-21 20:27:56,439 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-06-21 20:27:56,440 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-06-21 20:27:56,440 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-06-21 20:27:56,440 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-06-21 20:27:56,440 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2024-06-21 20:27:56,440 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-06-21 20:27:56,441 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-06-21 20:27:56,441 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessparser: Only consider loop invariants -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Check unreachability of reach_error function -> false [2024-06-21 20:27:56,676 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-06-21 20:27:56,697 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-06-21 20:27:56,700 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-06-21 20:27:56,702 INFO L270 PluginConnector]: Initializing Witness Parser... [2024-06-21 20:27:56,703 INFO L274 PluginConnector]: Witness Parser initialized [2024-06-21 20:27:56,704 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/./goblint.2024-06-19_11-23-25.files/mutex-meet-nonrel/test-easy11.wvr.yml/witness.yml [2024-06-21 20:27:56,792 INFO L270 PluginConnector]: Initializing CDTParser... [2024-06-21 20:27:56,793 INFO L274 PluginConnector]: CDTParser initialized [2024-06-21 20:27:56,795 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/weaver/test-easy11.wvr.c [2024-06-21 20:27:57,917 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-06-21 20:27:58,173 INFO L384 CDTParser]: Found 1 translation units. [2024-06-21 20:27:58,173 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/weaver/test-easy11.wvr.c [2024-06-21 20:27:58,180 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/7651dd8b1/7f20ba0251714539baf547338afa8cee/FLAG30af16253 [2024-06-21 20:27:58,197 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/7651dd8b1/7f20ba0251714539baf547338afa8cee [2024-06-21 20:27:58,198 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-06-21 20:27:58,199 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2024-06-21 20:27:58,203 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-06-21 20:27:58,203 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-06-21 20:27:58,208 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-06-21 20:27:58,209 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 21.06 08:27:56" (1/2) ... [2024-06-21 20:27:58,210 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1b902f61 and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 21.06 08:27:58, skipping insertion in model container [2024-06-21 20:27:58,210 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 21.06 08:27:56" (1/2) ... [2024-06-21 20:27:58,213 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@54cf7ecf and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 21.06 08:27:58, skipping insertion in model container [2024-06-21 20:27:58,213 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.06 08:27:58" (2/2) ... [2024-06-21 20:27:58,214 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1b902f61 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.06 08:27:58, skipping insertion in model container [2024-06-21 20:27:58,214 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.06 08:27:58" (2/2) ... [2024-06-21 20:27:58,215 INFO L83 nessWitnessExtractor]: Extracting all invariants from correctness witness [2024-06-21 20:27:58,233 INFO L95 edCorrectnessWitness]: Found the following entries in the witness: [2024-06-21 20:27:58,237 INFO L97 edCorrectnessWitness]: Location invariant before [L75-L75] (! multithreaded || 0 <= Y) && (! multithreaded || 0 <= Y) [2024-06-21 20:27:58,237 INFO L97 edCorrectnessWitness]: Location invariant before [L74-L74] (! multithreaded || 0 <= Y) && (! multithreaded || 0 <= Y) [2024-06-21 20:27:58,238 INFO L103 edCorrectnessWitness]: ghost_variable multithreaded = 0 [2024-06-21 20:27:58,238 INFO L106 edCorrectnessWitness]: ghost_update [L73-L73] multithreaded = 1; [2024-06-21 20:27:58,257 INFO L177 MainTranslator]: Built tables and reachable declarations [2024-06-21 20:27:58,455 INFO L207 PostProcessor]: Analyzing one entry point: main [2024-06-21 20:27:58,463 INFO L202 MainTranslator]: Completed pre-run Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local [2024-06-21 20:27:58,505 INFO L207 PostProcessor]: Analyzing one entry point: main [2024-06-21 20:27:58,520 INFO L206 MainTranslator]: Completed translation [2024-06-21 20:27:58,520 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.06 08:27:58 WrapperNode [2024-06-21 20:27:58,520 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-06-21 20:27:58,521 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-06-21 20:27:58,521 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-06-21 20:27:58,522 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-06-21 20:27:58,528 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.06 08:27:58" (1/1) ... [2024-06-21 20:27:58,536 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.06 08:27:58" (1/1) ... [2024-06-21 20:27:58,558 INFO L138 Inliner]: procedures = 20, calls = 15, calls flagged for inlining = 5, calls inlined = 5, statements flattened = 48 [2024-06-21 20:27:58,560 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-06-21 20:27:58,561 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-06-21 20:27:58,561 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-06-21 20:27:58,561 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-06-21 20:27:58,571 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.06 08:27:58" (1/1) ... [2024-06-21 20:27:58,572 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.06 08:27:58" (1/1) ... [2024-06-21 20:27:58,583 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.06 08:27:58" (1/1) ... [2024-06-21 20:27:58,604 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]. [2024-06-21 20:27:58,605 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.06 08:27:58" (1/1) ... [2024-06-21 20:27:58,606 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.06 08:27:58" (1/1) ... [2024-06-21 20:27:58,613 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.06 08:27:58" (1/1) ... [2024-06-21 20:27:58,621 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.06 08:27:58" (1/1) ... [2024-06-21 20:27:58,622 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.06 08:27:58" (1/1) ... [2024-06-21 20:27:58,623 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.06 08:27:58" (1/1) ... [2024-06-21 20:27:58,624 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-06-21 20:27:58,625 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-06-21 20:27:58,625 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-06-21 20:27:58,625 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-06-21 20:27:58,626 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.06 08:27:58" (1/1) ... [2024-06-21 20:27:58,631 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-06-21 20:27:58,638 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-06-21 20:27:58,657 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) [2024-06-21 20:27:58,678 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 [2024-06-21 20:27:58,695 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-06-21 20:27:58,695 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2024-06-21 20:27:58,695 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2024-06-21 20:27:58,696 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2024-06-21 20:27:58,696 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2024-06-21 20:27:58,696 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-06-21 20:27:58,696 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2024-06-21 20:27:58,696 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2024-06-21 20:27:58,696 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-06-21 20:27:58,696 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-06-21 20:27:58,697 WARN L214 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2024-06-21 20:27:58,763 INFO L244 CfgBuilder]: Building ICFG [2024-06-21 20:27:58,766 INFO L270 CfgBuilder]: Building CFG for each procedure with an implementation [2024-06-21 20:27:58,898 INFO L289 CfgBuilder]: Ommited future-live optimization because the input is a concurrent program. [2024-06-21 20:27:58,899 INFO L293 CfgBuilder]: Performing block encoding [2024-06-21 20:27:59,002 INFO L315 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-06-21 20:27:59,002 INFO L320 CfgBuilder]: Removed 2 assume(true) statements. [2024-06-21 20:27:59,004 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.06 08:27:59 BoogieIcfgContainer [2024-06-21 20:27:59,004 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-06-21 20:27:59,006 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-06-21 20:27:59,006 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-06-21 20:27:59,009 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-06-21 20:27:59,009 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 21.06 08:27:56" (1/4) ... [2024-06-21 20:27:59,010 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@32814282 and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CORRECTNESS_WITNESS 21.06 08:27:59, skipping insertion in model container [2024-06-21 20:27:59,010 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.06 08:27:58" (2/4) ... [2024-06-21 20:27:59,010 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@32814282 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.06 08:27:59, skipping insertion in model container [2024-06-21 20:27:59,011 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.06 08:27:58" (3/4) ... [2024-06-21 20:27:59,011 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@32814282 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.06 08:27:59, skipping insertion in model container [2024-06-21 20:27:59,011 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.06 08:27:59" (4/4) ... [2024-06-21 20:27:59,012 INFO L112 eAbstractionObserver]: Analyzing ICFG test-easy11.wvr.c [2024-06-21 20:27:59,027 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-06-21 20:27:59,028 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2024-06-21 20:27:59,028 INFO L522 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-06-21 20:27:59,064 INFO L144 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2024-06-21 20:27:59,095 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 30 places, 25 transitions, 64 flow [2024-06-21 20:27:59,126 INFO L124 PetriNetUnfolderBase]: 2/23 cut-off events. [2024-06-21 20:27:59,127 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2024-06-21 20:27:59,129 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. [2024-06-21 20:27:59,129 INFO L82 GeneralOperation]: Start removeDead. Operand has 30 places, 25 transitions, 64 flow [2024-06-21 20:27:59,135 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 26 places, 21 transitions, 51 flow [2024-06-21 20:27:59,152 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-06-21 20:27:59,160 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;@23477b14, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-06-21 20:27:59,161 INFO L358 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2024-06-21 20:27:59,178 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-06-21 20:27:59,179 INFO L124 PetriNetUnfolderBase]: 1/6 cut-off events. [2024-06-21 20:27:59,179 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-06-21 20:27:59,180 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 20:27:59,180 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2024-06-21 20:27:59,181 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)] === [2024-06-21 20:27:59,185 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 20:27:59,187 INFO L85 PathProgramCache]: Analyzing trace with hash 208983299, now seen corresponding path program 1 times [2024-06-21 20:27:59,199 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 20:27:59,200 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2020226693] [2024-06-21 20:27:59,200 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 20:27:59,201 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 20:27:59,303 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 20:27:59,378 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 20:27:59,378 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 20:27:59,379 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2020226693] [2024-06-21 20:27:59,379 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2020226693] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 20:27:59,380 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 20:27:59,380 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-06-21 20:27:59,381 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2129068357] [2024-06-21 20:27:59,382 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 20:27:59,389 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-06-21 20:27:59,393 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 20:27:59,414 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-06-21 20:27:59,415 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-06-21 20:27:59,430 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 25 [2024-06-21 20:27:59,432 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) [2024-06-21 20:27:59,433 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 20:27:59,433 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 25 [2024-06-21 20:27:59,434 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 20:27:59,506 INFO L124 PetriNetUnfolderBase]: 123/219 cut-off events. [2024-06-21 20:27:59,507 INFO L125 PetriNetUnfolderBase]: For 12/12 co-relation queries the response was YES. [2024-06-21 20:27:59,508 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. [2024-06-21 20:27:59,511 INFO L140 encePairwiseOnDemand]: 20/25 looper letters, 27 selfloop transitions, 3 changer transitions 1/33 dead transitions. [2024-06-21 20:27:59,511 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 28 places, 33 transitions, 140 flow [2024-06-21 20:27:59,513 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-06-21 20:27:59,516 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-06-21 20:27:59,523 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 45 transitions. [2024-06-21 20:27:59,525 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6 [2024-06-21 20:27:59,527 INFO L175 Difference]: Start difference. First operand has 26 places, 21 transitions, 51 flow. Second operand 3 states and 45 transitions. [2024-06-21 20:27:59,527 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 28 places, 33 transitions, 140 flow [2024-06-21 20:27:59,530 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 25 places, 33 transitions, 134 flow, removed 0 selfloop flow, removed 3 redundant places. [2024-06-21 20:27:59,532 INFO L231 Difference]: Finished difference. Result has 26 places, 22 transitions, 64 flow [2024-06-21 20:27:59,534 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} [2024-06-21 20:27:59,538 INFO L281 CegarLoopForPetriNet]: 26 programPoint places, 0 predicate places. [2024-06-21 20:27:59,538 INFO L495 AbstractCegarLoop]: Abstraction has has 26 places, 22 transitions, 64 flow [2024-06-21 20:27:59,538 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) [2024-06-21 20:27:59,538 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 20:27:59,538 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 20:27:59,539 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-06-21 20:27:59,539 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)] === [2024-06-21 20:27:59,541 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 20:27:59,542 INFO L85 PathProgramCache]: Analyzing trace with hash -1876780125, now seen corresponding path program 1 times [2024-06-21 20:27:59,542 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 20:27:59,542 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1591839142] [2024-06-21 20:27:59,542 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 20:27:59,542 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 20:27:59,558 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 20:27:59,622 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 20:27:59,623 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 20:27:59,623 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1591839142] [2024-06-21 20:27:59,623 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1591839142] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 20:27:59,623 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 20:27:59,623 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-06-21 20:27:59,624 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [189236681] [2024-06-21 20:27:59,624 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 20:27:59,625 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-06-21 20:27:59,625 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 20:27:59,626 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-06-21 20:27:59,626 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-06-21 20:27:59,636 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 25 [2024-06-21 20:27:59,637 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) [2024-06-21 20:27:59,637 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 20:27:59,637 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 25 [2024-06-21 20:27:59,637 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 20:27:59,762 INFO L124 PetriNetUnfolderBase]: 106/187 cut-off events. [2024-06-21 20:27:59,763 INFO L125 PetriNetUnfolderBase]: For 15/15 co-relation queries the response was YES. [2024-06-21 20:27:59,764 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. [2024-06-21 20:27:59,765 INFO L140 encePairwiseOnDemand]: 19/25 looper letters, 33 selfloop transitions, 6 changer transitions 0/41 dead transitions. [2024-06-21 20:27:59,765 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 28 places, 41 transitions, 185 flow [2024-06-21 20:27:59,766 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-06-21 20:27:59,766 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-06-21 20:27:59,767 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 61 transitions. [2024-06-21 20:27:59,767 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.488 [2024-06-21 20:27:59,767 INFO L175 Difference]: Start difference. First operand has 26 places, 22 transitions, 64 flow. Second operand 5 states and 61 transitions. [2024-06-21 20:27:59,767 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 28 places, 41 transitions, 185 flow [2024-06-21 20:27:59,769 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 27 places, 41 transitions, 181 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-06-21 20:27:59,770 INFO L231 Difference]: Finished difference. Result has 29 places, 23 transitions, 84 flow [2024-06-21 20:27:59,770 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} [2024-06-21 20:27:59,771 INFO L281 CegarLoopForPetriNet]: 26 programPoint places, 3 predicate places. [2024-06-21 20:27:59,771 INFO L495 AbstractCegarLoop]: Abstraction has has 29 places, 23 transitions, 84 flow [2024-06-21 20:27:59,771 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) [2024-06-21 20:27:59,771 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 20:27:59,771 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 20:27:59,772 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-06-21 20:27:59,772 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)] === [2024-06-21 20:27:59,772 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 20:27:59,772 INFO L85 PathProgramCache]: Analyzing trace with hash -1228768970, now seen corresponding path program 1 times [2024-06-21 20:27:59,773 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 20:27:59,773 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [53385738] [2024-06-21 20:27:59,773 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 20:27:59,773 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 20:27:59,784 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 20:27:59,865 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 20:27:59,866 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 20:27:59,866 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [53385738] [2024-06-21 20:27:59,867 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [53385738] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 20:27:59,867 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 20:27:59,867 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-06-21 20:27:59,867 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1398101728] [2024-06-21 20:27:59,868 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 20:27:59,868 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-06-21 20:27:59,869 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 20:27:59,869 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-06-21 20:27:59,870 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-06-21 20:27:59,889 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 25 [2024-06-21 20:27:59,890 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) [2024-06-21 20:27:59,890 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 20:27:59,890 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 25 [2024-06-21 20:27:59,890 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 20:27:59,991 INFO L124 PetriNetUnfolderBase]: 95/172 cut-off events. [2024-06-21 20:27:59,991 INFO L125 PetriNetUnfolderBase]: For 84/84 co-relation queries the response was YES. [2024-06-21 20:27:59,994 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. [2024-06-21 20:27:59,998 INFO L140 encePairwiseOnDemand]: 20/25 looper letters, 30 selfloop transitions, 7 changer transitions 0/39 dead transitions. [2024-06-21 20:27:59,999 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 33 places, 39 transitions, 200 flow [2024-06-21 20:28:00,000 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-06-21 20:28:00,001 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-06-21 20:28:00,002 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 57 transitions. [2024-06-21 20:28:00,003 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.456 [2024-06-21 20:28:00,004 INFO L175 Difference]: Start difference. First operand has 29 places, 23 transitions, 84 flow. Second operand 5 states and 57 transitions. [2024-06-21 20:28:00,004 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 33 places, 39 transitions, 200 flow [2024-06-21 20:28:00,005 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 31 places, 39 transitions, 189 flow, removed 1 selfloop flow, removed 2 redundant places. [2024-06-21 20:28:00,026 INFO L231 Difference]: Finished difference. Result has 33 places, 25 transitions, 106 flow [2024-06-21 20:28:00,026 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} [2024-06-21 20:28:00,027 INFO L281 CegarLoopForPetriNet]: 26 programPoint places, 7 predicate places. [2024-06-21 20:28:00,027 INFO L495 AbstractCegarLoop]: Abstraction has has 33 places, 25 transitions, 106 flow [2024-06-21 20:28:00,028 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) [2024-06-21 20:28:00,028 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 20:28:00,028 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 20:28:00,028 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-06-21 20:28:00,029 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)] === [2024-06-21 20:28:00,029 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 20:28:00,029 INFO L85 PathProgramCache]: Analyzing trace with hash -1808740102, now seen corresponding path program 1 times [2024-06-21 20:28:00,030 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 20:28:00,030 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [160034626] [2024-06-21 20:28:00,030 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 20:28:00,030 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 20:28:00,043 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 20:28:00,139 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 20:28:00,140 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 20:28:00,144 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [160034626] [2024-06-21 20:28:00,144 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [160034626] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 20:28:00,145 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 20:28:00,145 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-21 20:28:00,145 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [261908563] [2024-06-21 20:28:00,146 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 20:28:00,146 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-21 20:28:00,147 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 20:28:00,149 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-21 20:28:00,150 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2024-06-21 20:28:00,166 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 25 [2024-06-21 20:28:00,166 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) [2024-06-21 20:28:00,166 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 20:28:00,167 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 25 [2024-06-21 20:28:00,167 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 20:28:00,297 INFO L124 PetriNetUnfolderBase]: 103/190 cut-off events. [2024-06-21 20:28:00,299 INFO L125 PetriNetUnfolderBase]: For 72/72 co-relation queries the response was YES. [2024-06-21 20:28:00,299 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. [2024-06-21 20:28:00,300 INFO L140 encePairwiseOnDemand]: 19/25 looper letters, 27 selfloop transitions, 6 changer transitions 13/48 dead transitions. [2024-06-21 20:28:00,301 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 39 places, 48 transitions, 253 flow [2024-06-21 20:28:00,301 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-21 20:28:00,301 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-21 20:28:00,303 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 74 transitions. [2024-06-21 20:28:00,304 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4228571428571429 [2024-06-21 20:28:00,304 INFO L175 Difference]: Start difference. First operand has 33 places, 25 transitions, 106 flow. Second operand 7 states and 74 transitions. [2024-06-21 20:28:00,304 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 39 places, 48 transitions, 253 flow [2024-06-21 20:28:00,308 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 38 places, 48 transitions, 247 flow, removed 1 selfloop flow, removed 1 redundant places. [2024-06-21 20:28:00,310 INFO L231 Difference]: Finished difference. Result has 39 places, 23 transitions, 102 flow [2024-06-21 20:28:00,310 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} [2024-06-21 20:28:00,311 INFO L281 CegarLoopForPetriNet]: 26 programPoint places, 13 predicate places. [2024-06-21 20:28:00,311 INFO L495 AbstractCegarLoop]: Abstraction has has 39 places, 23 transitions, 102 flow [2024-06-21 20:28:00,312 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) [2024-06-21 20:28:00,312 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 20:28:00,312 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 20:28:00,312 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-06-21 20:28:00,313 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)] === [2024-06-21 20:28:00,314 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 20:28:00,314 INFO L85 PathProgramCache]: Analyzing trace with hash 1944471586, now seen corresponding path program 2 times [2024-06-21 20:28:00,314 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 20:28:00,314 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1605910230] [2024-06-21 20:28:00,315 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 20:28:00,315 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 20:28:00,339 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 20:28:00,437 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 20:28:00,437 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 20:28:00,437 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1605910230] [2024-06-21 20:28:00,437 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1605910230] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 20:28:00,437 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 20:28:00,438 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-21 20:28:00,438 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [891641974] [2024-06-21 20:28:00,438 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 20:28:00,438 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-21 20:28:00,439 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 20:28:00,439 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-21 20:28:00,439 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2024-06-21 20:28:00,451 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 25 [2024-06-21 20:28:00,451 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) [2024-06-21 20:28:00,452 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 20:28:00,452 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 25 [2024-06-21 20:28:00,452 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 20:28:00,549 INFO L124 PetriNetUnfolderBase]: 84/161 cut-off events. [2024-06-21 20:28:00,549 INFO L125 PetriNetUnfolderBase]: For 142/142 co-relation queries the response was YES. [2024-06-21 20:28:00,550 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. [2024-06-21 20:28:00,551 INFO L140 encePairwiseOnDemand]: 19/25 looper letters, 23 selfloop transitions, 7 changer transitions 7/39 dead transitions. [2024-06-21 20:28:00,551 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 43 places, 39 transitions, 229 flow [2024-06-21 20:28:00,552 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-21 20:28:00,552 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-21 20:28:00,552 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 65 transitions. [2024-06-21 20:28:00,553 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.37142857142857144 [2024-06-21 20:28:00,553 INFO L175 Difference]: Start difference. First operand has 39 places, 23 transitions, 102 flow. Second operand 7 states and 65 transitions. [2024-06-21 20:28:00,553 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 43 places, 39 transitions, 229 flow [2024-06-21 20:28:00,555 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 35 places, 39 transitions, 200 flow, removed 1 selfloop flow, removed 8 redundant places. [2024-06-21 20:28:00,555 INFO L231 Difference]: Finished difference. Result has 38 places, 25 transitions, 117 flow [2024-06-21 20:28:00,556 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} [2024-06-21 20:28:00,556 INFO L281 CegarLoopForPetriNet]: 26 programPoint places, 12 predicate places. [2024-06-21 20:28:00,557 INFO L495 AbstractCegarLoop]: Abstraction has has 38 places, 25 transitions, 117 flow [2024-06-21 20:28:00,557 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) [2024-06-21 20:28:00,557 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 20:28:00,557 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 20:28:00,557 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-06-21 20:28:00,558 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)] === [2024-06-21 20:28:00,558 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 20:28:00,558 INFO L85 PathProgramCache]: Analyzing trace with hash -1808620132, now seen corresponding path program 3 times [2024-06-21 20:28:00,558 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 20:28:00,559 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1712707353] [2024-06-21 20:28:00,559 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 20:28:00,559 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 20:28:00,567 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 20:28:00,630 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 20:28:00,631 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 20:28:00,631 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1712707353] [2024-06-21 20:28:00,631 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1712707353] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 20:28:00,631 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 20:28:00,631 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-21 20:28:00,632 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [954704285] [2024-06-21 20:28:00,632 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 20:28:00,632 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-21 20:28:00,632 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 20:28:00,633 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-21 20:28:00,633 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2024-06-21 20:28:00,645 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 25 [2024-06-21 20:28:00,645 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) [2024-06-21 20:28:00,645 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 20:28:00,645 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 25 [2024-06-21 20:28:00,645 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 20:28:00,742 INFO L124 PetriNetUnfolderBase]: 82/157 cut-off events. [2024-06-21 20:28:00,742 INFO L125 PetriNetUnfolderBase]: For 123/123 co-relation queries the response was YES. [2024-06-21 20:28:00,743 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. [2024-06-21 20:28:00,743 INFO L140 encePairwiseOnDemand]: 19/25 looper letters, 27 selfloop transitions, 8 changer transitions 6/43 dead transitions. [2024-06-21 20:28:00,744 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 42 places, 43 transitions, 244 flow [2024-06-21 20:28:00,744 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-21 20:28:00,744 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-21 20:28:00,745 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 69 transitions. [2024-06-21 20:28:00,745 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3942857142857143 [2024-06-21 20:28:00,745 INFO L175 Difference]: Start difference. First operand has 38 places, 25 transitions, 117 flow. Second operand 7 states and 69 transitions. [2024-06-21 20:28:00,745 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 42 places, 43 transitions, 244 flow [2024-06-21 20:28:00,746 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 37 places, 43 transitions, 224 flow, removed 3 selfloop flow, removed 5 redundant places. [2024-06-21 20:28:00,747 INFO L231 Difference]: Finished difference. Result has 40 places, 25 transitions, 126 flow [2024-06-21 20:28:00,747 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} [2024-06-21 20:28:00,748 INFO L281 CegarLoopForPetriNet]: 26 programPoint places, 14 predicate places. [2024-06-21 20:28:00,748 INFO L495 AbstractCegarLoop]: Abstraction has has 40 places, 25 transitions, 126 flow [2024-06-21 20:28:00,749 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) [2024-06-21 20:28:00,749 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 20:28:00,749 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 20:28:00,749 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-06-21 20:28:00,749 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)] === [2024-06-21 20:28:00,750 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 20:28:00,750 INFO L85 PathProgramCache]: Analyzing trace with hash 1939998286, now seen corresponding path program 4 times [2024-06-21 20:28:00,750 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 20:28:00,750 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1648787661] [2024-06-21 20:28:00,750 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 20:28:00,751 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 20:28:00,758 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 20:28:00,812 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 20:28:00,813 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 20:28:00,813 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1648787661] [2024-06-21 20:28:00,813 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1648787661] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 20:28:00,813 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 20:28:00,813 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-21 20:28:00,814 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1651563274] [2024-06-21 20:28:00,814 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 20:28:00,814 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-21 20:28:00,814 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 20:28:00,815 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-21 20:28:00,815 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2024-06-21 20:28:00,830 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 25 [2024-06-21 20:28:00,830 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) [2024-06-21 20:28:00,830 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 20:28:00,830 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 25 [2024-06-21 20:28:00,831 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 20:28:00,937 INFO L124 PetriNetUnfolderBase]: 80/155 cut-off events. [2024-06-21 20:28:00,937 INFO L125 PetriNetUnfolderBase]: For 180/180 co-relation queries the response was YES. [2024-06-21 20:28:00,938 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. [2024-06-21 20:28:00,939 INFO L140 encePairwiseOnDemand]: 19/25 looper letters, 20 selfloop transitions, 4 changer transitions 15/41 dead transitions. [2024-06-21 20:28:00,939 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 45 places, 41 transitions, 242 flow [2024-06-21 20:28:00,940 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-21 20:28:00,940 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-21 20:28:00,941 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 67 transitions. [2024-06-21 20:28:00,941 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.38285714285714284 [2024-06-21 20:28:00,942 INFO L175 Difference]: Start difference. First operand has 40 places, 25 transitions, 126 flow. Second operand 7 states and 67 transitions. [2024-06-21 20:28:00,942 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 45 places, 41 transitions, 242 flow [2024-06-21 20:28:00,944 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 39 places, 41 transitions, 218 flow, removed 2 selfloop flow, removed 6 redundant places. [2024-06-21 20:28:00,945 INFO L231 Difference]: Finished difference. Result has 41 places, 22 transitions, 95 flow [2024-06-21 20:28:00,945 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} [2024-06-21 20:28:00,946 INFO L281 CegarLoopForPetriNet]: 26 programPoint places, 15 predicate places. [2024-06-21 20:28:00,946 INFO L495 AbstractCegarLoop]: Abstraction has has 41 places, 22 transitions, 95 flow [2024-06-21 20:28:00,947 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) [2024-06-21 20:28:00,947 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 20:28:00,947 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 20:28:00,947 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-06-21 20:28:00,947 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)] === [2024-06-21 20:28:00,948 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 20:28:00,948 INFO L85 PathProgramCache]: Analyzing trace with hash 1944644566, now seen corresponding path program 5 times [2024-06-21 20:28:00,948 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 20:28:00,949 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1443388003] [2024-06-21 20:28:00,949 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 20:28:00,949 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 20:28:00,958 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 20:28:01,039 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 20:28:01,039 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 20:28:01,039 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1443388003] [2024-06-21 20:28:01,040 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1443388003] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 20:28:01,040 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 20:28:01,040 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-21 20:28:01,040 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1509132058] [2024-06-21 20:28:01,040 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 20:28:01,042 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-21 20:28:01,042 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 20:28:01,042 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-21 20:28:01,043 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2024-06-21 20:28:01,059 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 25 [2024-06-21 20:28:01,060 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) [2024-06-21 20:28:01,060 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 20:28:01,060 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 25 [2024-06-21 20:28:01,060 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 20:28:01,143 INFO L124 PetriNetUnfolderBase]: 64/126 cut-off events. [2024-06-21 20:28:01,143 INFO L125 PetriNetUnfolderBase]: For 94/94 co-relation queries the response was YES. [2024-06-21 20:28:01,144 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. [2024-06-21 20:28:01,144 INFO L140 encePairwiseOnDemand]: 19/25 looper letters, 18 selfloop transitions, 3 changer transitions 12/35 dead transitions. [2024-06-21 20:28:01,145 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 43 places, 35 transitions, 187 flow [2024-06-21 20:28:01,145 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-21 20:28:01,145 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-21 20:28:01,146 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 62 transitions. [2024-06-21 20:28:01,147 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.35428571428571426 [2024-06-21 20:28:01,147 INFO L175 Difference]: Start difference. First operand has 41 places, 22 transitions, 95 flow. Second operand 7 states and 62 transitions. [2024-06-21 20:28:01,148 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 43 places, 35 transitions, 187 flow [2024-06-21 20:28:01,148 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 34 places, 35 transitions, 163 flow, removed 3 selfloop flow, removed 9 redundant places. [2024-06-21 20:28:01,149 INFO L231 Difference]: Finished difference. Result has 35 places, 19 transitions, 65 flow [2024-06-21 20:28:01,153 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} [2024-06-21 20:28:01,155 INFO L281 CegarLoopForPetriNet]: 26 programPoint places, 9 predicate places. [2024-06-21 20:28:01,155 INFO L495 AbstractCegarLoop]: Abstraction has has 35 places, 19 transitions, 65 flow [2024-06-21 20:28:01,156 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) [2024-06-21 20:28:01,156 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 20:28:01,156 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 20:28:01,156 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-06-21 20:28:01,157 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)] === [2024-06-21 20:28:01,157 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 20:28:01,157 INFO L85 PathProgramCache]: Analyzing trace with hash 1944466936, now seen corresponding path program 6 times [2024-06-21 20:28:01,158 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 20:28:01,158 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1743093787] [2024-06-21 20:28:01,158 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 20:28:01,158 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 20:28:01,174 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 20:28:01,239 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 20:28:01,240 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 20:28:01,240 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1743093787] [2024-06-21 20:28:01,240 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1743093787] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 20:28:01,240 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 20:28:01,240 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-21 20:28:01,241 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1361473986] [2024-06-21 20:28:01,241 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 20:28:01,241 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-21 20:28:01,241 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 20:28:01,242 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-21 20:28:01,242 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2024-06-21 20:28:01,256 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 25 [2024-06-21 20:28:01,256 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) [2024-06-21 20:28:01,256 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 20:28:01,256 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 25 [2024-06-21 20:28:01,257 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 20:28:01,319 INFO L124 PetriNetUnfolderBase]: 36/74 cut-off events. [2024-06-21 20:28:01,319 INFO L125 PetriNetUnfolderBase]: For 36/36 co-relation queries the response was YES. [2024-06-21 20:28:01,320 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. [2024-06-21 20:28:01,320 INFO L140 encePairwiseOnDemand]: 19/25 looper letters, 0 selfloop transitions, 0 changer transitions 25/25 dead transitions. [2024-06-21 20:28:01,320 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 36 places, 25 transitions, 115 flow [2024-06-21 20:28:01,320 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-21 20:28:01,321 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-21 20:28:01,321 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 52 transitions. [2024-06-21 20:28:01,321 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.29714285714285715 [2024-06-21 20:28:01,321 INFO L175 Difference]: Start difference. First operand has 35 places, 19 transitions, 65 flow. Second operand 7 states and 52 transitions. [2024-06-21 20:28:01,321 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 36 places, 25 transitions, 115 flow [2024-06-21 20:28:01,322 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 29 places, 25 transitions, 101 flow, removed 0 selfloop flow, removed 7 redundant places. [2024-06-21 20:28:01,322 INFO L231 Difference]: Finished difference. Result has 29 places, 0 transitions, 0 flow [2024-06-21 20:28:01,322 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} [2024-06-21 20:28:01,323 INFO L281 CegarLoopForPetriNet]: 26 programPoint places, 3 predicate places. [2024-06-21 20:28:01,323 INFO L495 AbstractCegarLoop]: Abstraction has has 29 places, 0 transitions, 0 flow [2024-06-21 20:28:01,323 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) [2024-06-21 20:28:01,326 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT (3 of 4 remaining) [2024-06-21 20:28:01,326 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (2 of 4 remaining) [2024-06-21 20:28:01,327 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 4 remaining) [2024-06-21 20:28:01,327 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 4 remaining) [2024-06-21 20:28:01,327 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-06-21 20:28:01,327 INFO L445 BasicCegarLoop]: Path program histogram: [6, 1, 1, 1] [2024-06-21 20:28:01,330 INFO L229 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2024-06-21 20:28:01,330 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2024-06-21 20:28:01,334 INFO L507 ceAbstractionStarter]: Automizer considered 2 witness invariants [2024-06-21 20:28:01,335 INFO L508 ceAbstractionStarter]: WitnessConsidered=2 [2024-06-21 20:28:01,335 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 21.06 08:28:01 BasicIcfg [2024-06-21 20:28:01,336 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2024-06-21 20:28:01,336 INFO L158 Benchmark]: Toolchain (without parser) took 3137.35ms. Allocated memory was 155.2MB in the beginning and 205.5MB in the end (delta: 50.3MB). Free memory was 125.9MB in the beginning and 124.2MB in the end (delta: 1.7MB). Peak memory consumption was 54.4MB. Max. memory is 16.1GB. [2024-06-21 20:28:01,336 INFO L158 Benchmark]: Witness Parser took 0.19ms. Allocated memory is still 155.2MB. Free memory is still 128.2MB. There was no memory consumed. Max. memory is 16.1GB. [2024-06-21 20:28:01,337 INFO L158 Benchmark]: CDTParser took 0.70ms. Allocated memory is still 155.2MB. Free memory is still 125.4MB. There was no memory consumed. Max. memory is 16.1GB. [2024-06-21 20:28:01,337 INFO L158 Benchmark]: CACSL2BoogieTranslator took 317.58ms. Allocated memory is still 155.2MB. Free memory was 125.6MB in the beginning and 111.6MB in the end (delta: 14.0MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. [2024-06-21 20:28:01,337 INFO L158 Benchmark]: Boogie Procedure Inliner took 38.52ms. Allocated memory is still 155.2MB. Free memory was 111.6MB in the beginning and 110.1MB in the end (delta: 1.5MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2024-06-21 20:28:01,338 INFO L158 Benchmark]: Boogie Preprocessor took 63.75ms. Allocated memory is still 155.2MB. Free memory was 110.1MB in the beginning and 108.3MB in the end (delta: 1.8MB). There was no memory consumed. Max. memory is 16.1GB. [2024-06-21 20:28:01,338 INFO L158 Benchmark]: RCFGBuilder took 379.46ms. Allocated memory is still 155.2MB. Free memory was 108.3MB in the beginning and 88.2MB in the end (delta: 20.1MB). Peak memory consumption was 21.0MB. Max. memory is 16.1GB. [2024-06-21 20:28:01,338 INFO L158 Benchmark]: TraceAbstraction took 2329.60ms. Allocated memory was 155.2MB in the beginning and 205.5MB in the end (delta: 50.3MB). Free memory was 87.3MB in the beginning and 124.2MB in the end (delta: -36.8MB). Peak memory consumption was 16.7MB. Max. memory is 16.1GB. [2024-06-21 20:28:01,340 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * Witness Parser took 0.19ms. Allocated memory is still 155.2MB. Free memory is still 128.2MB. There was no memory consumed. Max. memory is 16.1GB. * CDTParser took 0.70ms. Allocated memory is still 155.2MB. Free memory is still 125.4MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 317.58ms. Allocated memory is still 155.2MB. Free memory was 125.6MB in the beginning and 111.6MB in the end (delta: 14.0MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 38.52ms. Allocated memory is still 155.2MB. Free memory was 111.6MB in the beginning and 110.1MB in the end (delta: 1.5MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 63.75ms. Allocated memory is still 155.2MB. Free memory was 110.1MB in the beginning and 108.3MB in the end (delta: 1.8MB). There was no memory consumed. Max. memory is 16.1GB. * RCFGBuilder took 379.46ms. Allocated memory is still 155.2MB. Free memory was 108.3MB in the beginning and 88.2MB in the end (delta: 20.1MB). Peak memory consumption was 21.0MB. Max. memory is 16.1GB. * TraceAbstraction took 2329.60ms. Allocated memory was 155.2MB in the beginning and 205.5MB in the end (delta: 50.3MB). Free memory was 87.3MB in the beginning and 124.2MB in the end (delta: -36.8MB). Peak memory consumption was 16.7MB. 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: 2.2s, OverallIterations: 9, TraceHistogramMax: 1, PathProgramHistogramMax: 6, EmptinessCheckTime: 0.0s, AutomataDifference: 1.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 235 SdHoareTripleChecker+Valid, 0.7s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 199 mSDsluCounter, 9 SdHoareTripleChecker+Invalid, 0.5s 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, 0.7s 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! [2024-06-21 20:28:01,368 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