./Ultimate.py --spec ../../../trunk/examples/svcomp/properties/unreach-call.prp --file ../../../trunk/examples/svcomp/pthread-wmm/safe029_tso.i --full-output --witness-type correctness_witness --witnessparser.only.consider.loop.invariants false --validate ./goblint.2024-06-19_11-23-25.files/mutex-meet-nonrel/safe029_tso.yml/witness.yml --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 7724a2de Calling Ultimate with: /root/.sdkman/candidates/java/current/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReachWitnessValidation.xml -i ../../../trunk/examples/svcomp/pthread-wmm/safe029_tso.i ./goblint.2024-06-19_11-23-25.files/mutex-meet-nonrel/safe029_tso.yml/witness.yml -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --traceabstraction.compute.hoare.annotation.of.negated.interpolant.automaton,.abstraction.and.cfg false --witnessparser.only.consider.loop.invariants false --- Real Ultimate output --- This is Ultimate 0.2.4-tmp.fs.goblint-validation-7724a2d-m [2024-06-28 01:01:08,330 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-06-28 01:01:08,416 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-06-28 01:01:08,420 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-06-28 01:01:08,420 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-06-28 01:01:08,452 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-06-28 01:01:08,453 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-06-28 01:01:08,453 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-06-28 01:01:08,454 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-06-28 01:01:08,458 INFO L153 SettingsManager]: * Use memory slicer=true [2024-06-28 01:01:08,458 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-06-28 01:01:08,458 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-06-28 01:01:08,459 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-06-28 01:01:08,461 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-06-28 01:01:08,462 INFO L153 SettingsManager]: * Use SBE=true [2024-06-28 01:01:08,462 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-06-28 01:01:08,462 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-06-28 01:01:08,462 INFO L153 SettingsManager]: * sizeof long=4 [2024-06-28 01:01:08,463 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-06-28 01:01:08,464 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-06-28 01:01:08,464 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-06-28 01:01:08,465 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-06-28 01:01:08,465 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-06-28 01:01:08,465 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-06-28 01:01:08,465 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-06-28 01:01:08,466 INFO L153 SettingsManager]: * sizeof long double=12 [2024-06-28 01:01:08,466 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-06-28 01:01:08,466 INFO L153 SettingsManager]: * Use constant arrays=true [2024-06-28 01:01:08,467 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-06-28 01:01:08,467 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-06-28 01:01:08,468 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-06-28 01:01:08,468 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-06-28 01:01:08,469 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-06-28 01:01:08,469 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-06-28 01:01:08,469 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-06-28 01:01:08,470 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-06-28 01:01:08,470 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-06-28 01:01:08,470 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-06-28 01:01:08,470 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-06-28 01:01:08,471 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-06-28 01:01:08,471 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2024-06-28 01:01:08,471 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-06-28 01:01:08,471 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-06-28 01:01:08,472 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessparser: Only consider loop invariants -> false [2024-06-28 01:01:08,733 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-06-28 01:01:08,760 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-06-28 01:01:08,762 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-06-28 01:01:08,763 INFO L270 PluginConnector]: Initializing Witness Parser... [2024-06-28 01:01:08,764 INFO L274 PluginConnector]: Witness Parser initialized [2024-06-28 01:01:08,765 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/./goblint.2024-06-19_11-23-25.files/mutex-meet-nonrel/safe029_tso.yml/witness.yml [2024-06-28 01:01:08,882 INFO L270 PluginConnector]: Initializing CDTParser... [2024-06-28 01:01:08,883 INFO L274 PluginConnector]: CDTParser initialized [2024-06-28 01:01:08,883 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-wmm/safe029_tso.i [2024-06-28 01:01:10,028 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-06-28 01:01:10,295 INFO L384 CDTParser]: Found 1 translation units. [2024-06-28 01:01:10,295 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/safe029_tso.i [2024-06-28 01:01:10,309 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/aa16fe359/5ba93cc8f9d44e8aab02a0850f320002/FLAG6bbb29afa [2024-06-28 01:01:10,321 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/aa16fe359/5ba93cc8f9d44e8aab02a0850f320002 [2024-06-28 01:01:10,322 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-06-28 01:01:10,323 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2024-06-28 01:01:10,326 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-06-28 01:01:10,326 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-06-28 01:01:10,330 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-06-28 01:01:10,331 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 28.06 01:01:08" (1/2) ... [2024-06-28 01:01:10,333 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@120c1090 and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 28.06 01:01:10, skipping insertion in model container [2024-06-28 01:01:10,333 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 28.06 01:01:08" (1/2) ... [2024-06-28 01:01:10,335 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@77dcdb5e and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 28.06 01:01:10, skipping insertion in model container [2024-06-28 01:01:10,335 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.06 01:01:10" (2/2) ... [2024-06-28 01:01:10,335 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@120c1090 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.06 01:01:10, skipping insertion in model container [2024-06-28 01:01:10,336 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.06 01:01:10" (2/2) ... [2024-06-28 01:01:10,336 INFO L83 nessWitnessExtractor]: Extracting all invariants from correctness witness [2024-06-28 01:01:10,367 INFO L95 edCorrectnessWitness]: Found the following entries in the witness: [2024-06-28 01:01:10,368 INFO L97 edCorrectnessWitness]: Location invariant before [L760-L760] (((! multithreaded || ((x == 0 || x == 1) || x == 2)) && (! multithreaded || ((y == 0 || y == 1) || y == 2))) && (! multithreaded || ((0 <= __unbuffered_cnt && ((x == 0 || x == 1) || x == 2)) && ((y == 0 || y == 1) || y == 2)))) && (! multithreaded || 0 <= __unbuffered_cnt) [2024-06-28 01:01:10,368 INFO L97 edCorrectnessWitness]: Location invariant before [L759-L759] (((! multithreaded || ((x == 0 || x == 1) || x == 2)) && (! multithreaded || ((y == 0 || y == 1) || y == 2))) && (! multithreaded || ((0 <= __unbuffered_cnt && ((x == 0 || x == 1) || x == 2)) && ((y == 0 || y == 1) || y == 2)))) && (! multithreaded || 0 <= __unbuffered_cnt) [2024-06-28 01:01:10,369 INFO L103 edCorrectnessWitness]: ghost_variable multithreaded = 0 [2024-06-28 01:01:10,369 INFO L106 edCorrectnessWitness]: ghost_update [L757-L757] multithreaded = 1; [2024-06-28 01:01:10,410 INFO L177 MainTranslator]: Built tables and reachable declarations [2024-06-28 01:01:10,582 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/safe029_tso.i[945,958] [2024-06-28 01:01:10,775 INFO L207 PostProcessor]: Analyzing one entry point: main [2024-06-28 01:01:10,784 INFO L202 MainTranslator]: Completed pre-run Start Parsing Local [2024-06-28 01:01:10,849 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/safe029_tso.i[945,958] Start Parsing Local Start Parsing Local Start Parsing Local [2024-06-28 01:01:10,937 INFO L207 PostProcessor]: Analyzing one entry point: main [2024-06-28 01:01:10,974 INFO L206 MainTranslator]: Completed translation [2024-06-28 01:01:10,975 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.06 01:01:10 WrapperNode [2024-06-28 01:01:10,975 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-06-28 01:01:10,976 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-06-28 01:01:10,976 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-06-28 01:01:10,977 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-06-28 01:01:10,983 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.06 01:01:10" (1/1) ... [2024-06-28 01:01:10,993 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.06 01:01:10" (1/1) ... [2024-06-28 01:01:11,010 INFO L138 Inliner]: procedures = 174, calls = 32, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 53 [2024-06-28 01:01:11,011 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-06-28 01:01:11,011 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-06-28 01:01:11,011 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-06-28 01:01:11,012 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-06-28 01:01:11,021 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.06 01:01:10" (1/1) ... [2024-06-28 01:01:11,021 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.06 01:01:10" (1/1) ... [2024-06-28 01:01:11,024 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.06 01:01:10" (1/1) ... [2024-06-28 01:01:11,035 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]. [2024-06-28 01:01:11,035 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.06 01:01:10" (1/1) ... [2024-06-28 01:01:11,035 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.06 01:01:10" (1/1) ... [2024-06-28 01:01:11,039 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.06 01:01:10" (1/1) ... [2024-06-28 01:01:11,041 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.06 01:01:10" (1/1) ... [2024-06-28 01:01:11,042 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.06 01:01:10" (1/1) ... [2024-06-28 01:01:11,043 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.06 01:01:10" (1/1) ... [2024-06-28 01:01:11,045 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-06-28 01:01:11,045 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-06-28 01:01:11,046 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-06-28 01:01:11,046 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-06-28 01:01:11,046 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.06 01:01:10" (1/1) ... [2024-06-28 01:01:11,052 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-06-28 01:01:11,059 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-06-28 01:01:11,077 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-06-28 01:01:11,079 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-06-28 01:01:11,105 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2024-06-28 01:01:11,106 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-06-28 01:01:11,106 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2024-06-28 01:01:11,106 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2024-06-28 01:01:11,106 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2024-06-28 01:01:11,106 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2024-06-28 01:01:11,107 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-06-28 01:01:11,107 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2024-06-28 01:01:11,107 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-06-28 01:01:11,107 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-06-28 01:01:11,108 WARN L214 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2024-06-28 01:01:11,216 INFO L244 CfgBuilder]: Building ICFG [2024-06-28 01:01:11,217 INFO L270 CfgBuilder]: Building CFG for each procedure with an implementation [2024-06-28 01:01:11,346 INFO L289 CfgBuilder]: Ommited future-live optimization because the input is a concurrent program. [2024-06-28 01:01:11,346 INFO L293 CfgBuilder]: Performing block encoding [2024-06-28 01:01:11,417 INFO L315 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-06-28 01:01:11,418 INFO L320 CfgBuilder]: Removed 0 assume(true) statements. [2024-06-28 01:01:11,418 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.06 01:01:11 BoogieIcfgContainer [2024-06-28 01:01:11,418 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-06-28 01:01:11,420 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-06-28 01:01:11,420 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-06-28 01:01:11,423 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-06-28 01:01:11,423 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 28.06 01:01:08" (1/4) ... [2024-06-28 01:01:11,424 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7c4f2ae5 and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CORRECTNESS_WITNESS 28.06 01:01:11, skipping insertion in model container [2024-06-28 01:01:11,424 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.06 01:01:10" (2/4) ... [2024-06-28 01:01:11,424 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7c4f2ae5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.06 01:01:11, skipping insertion in model container [2024-06-28 01:01:11,424 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.06 01:01:10" (3/4) ... [2024-06-28 01:01:11,425 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7c4f2ae5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.06 01:01:11, skipping insertion in model container [2024-06-28 01:01:11,425 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.06 01:01:11" (4/4) ... [2024-06-28 01:01:11,426 INFO L112 eAbstractionObserver]: Analyzing ICFG safe029_tso.i [2024-06-28 01:01:11,441 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-06-28 01:01:11,442 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 3 error locations. [2024-06-28 01:01:11,442 INFO L522 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-06-28 01:01:11,472 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2024-06-28 01:01:11,509 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 40 places, 34 transitions, 76 flow [2024-06-28 01:01:11,546 INFO L124 PetriNetUnfolderBase]: 1/32 cut-off events. [2024-06-28 01:01:11,551 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-06-28 01:01:11,554 INFO L83 FinitePrefix]: Finished finitePrefix Result has 39 conditions, 32 events. 1/32 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 43 event pairs, 0 based on Foata normal form. 0/28 useless extension candidates. Maximal degree in co-relation 31. Up to 2 conditions per place. [2024-06-28 01:01:11,555 INFO L82 GeneralOperation]: Start removeDead. Operand has 40 places, 34 transitions, 76 flow [2024-06-28 01:01:11,558 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 36 places, 29 transitions, 64 flow [2024-06-28 01:01:11,575 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-06-28 01:01:11,582 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;@5fe2fa16, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-06-28 01:01:11,583 INFO L358 AbstractCegarLoop]: Starting to check reachability of 5 error locations. [2024-06-28 01:01:11,591 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-06-28 01:01:11,591 INFO L124 PetriNetUnfolderBase]: 0/5 cut-off events. [2024-06-28 01:01:11,591 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-06-28 01:01:11,591 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:01:11,592 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2024-06-28 01:01:11,592 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2024-06-28 01:01:11,597 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:01:11,597 INFO L85 PathProgramCache]: Analyzing trace with hash 176439726, now seen corresponding path program 1 times [2024-06-28 01:01:11,606 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:01:11,607 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1122025538] [2024-06-28 01:01:11,607 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:01:11,608 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:01:11,692 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:01:11,885 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:01:11,885 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:01:11,885 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1122025538] [2024-06-28 01:01:11,886 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1122025538] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:01:11,886 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:01:11,887 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-06-28 01:01:11,888 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1275826808] [2024-06-28 01:01:11,889 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:01:11,896 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-06-28 01:01:11,900 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:01:11,928 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-06-28 01:01:11,929 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-06-28 01:01:11,954 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 34 [2024-06-28 01:01:11,956 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 36 places, 29 transitions, 64 flow. Second operand has 3 states, 3 states have (on average 15.333333333333334) internal successors, (46), 3 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:01:11,956 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:01:11,956 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 34 [2024-06-28 01:01:11,957 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:01:12,088 INFO L124 PetriNetUnfolderBase]: 189/369 cut-off events. [2024-06-28 01:01:12,088 INFO L125 PetriNetUnfolderBase]: For 5/5 co-relation queries the response was YES. [2024-06-28 01:01:12,090 INFO L83 FinitePrefix]: Finished finitePrefix Result has 718 conditions, 369 events. 189/369 cut-off events. For 5/5 co-relation queries the response was YES. Maximal size of possible extension queue 32. Compared 1749 event pairs, 107 based on Foata normal form. 1/354 useless extension candidates. Maximal degree in co-relation 707. Up to 326 conditions per place. [2024-06-28 01:01:12,093 INFO L140 encePairwiseOnDemand]: 29/34 looper letters, 23 selfloop transitions, 3 changer transitions 0/37 dead transitions. [2024-06-28 01:01:12,093 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 38 places, 37 transitions, 135 flow [2024-06-28 01:01:12,095 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-06-28 01:01:12,098 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-06-28 01:01:12,104 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 70 transitions. [2024-06-28 01:01:12,106 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6862745098039216 [2024-06-28 01:01:12,108 INFO L175 Difference]: Start difference. First operand has 36 places, 29 transitions, 64 flow. Second operand 3 states and 70 transitions. [2024-06-28 01:01:12,109 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 38 places, 37 transitions, 135 flow [2024-06-28 01:01:12,111 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 36 places, 37 transitions, 132 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-06-28 01:01:12,113 INFO L231 Difference]: Finished difference. Result has 37 places, 31 transitions, 83 flow [2024-06-28 01:01:12,115 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=34, PETRI_DIFFERENCE_MINUEND_FLOW=62, PETRI_DIFFERENCE_MINUEND_PLACES=34, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=29, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=26, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=83, PETRI_PLACES=37, PETRI_TRANSITIONS=31} [2024-06-28 01:01:12,118 INFO L281 CegarLoopForPetriNet]: 36 programPoint places, 1 predicate places. [2024-06-28 01:01:12,119 INFO L495 AbstractCegarLoop]: Abstraction has has 37 places, 31 transitions, 83 flow [2024-06-28 01:01:12,119 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 15.333333333333334) internal successors, (46), 3 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:01:12,119 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:01:12,120 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:01:12,120 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-06-28 01:01:12,120 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2024-06-28 01:01:12,121 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:01:12,121 INFO L85 PathProgramCache]: Analyzing trace with hash 2054885965, now seen corresponding path program 1 times [2024-06-28 01:01:12,121 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:01:12,122 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1957227927] [2024-06-28 01:01:12,122 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:01:12,122 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:01:12,152 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:01:12,252 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:01:12,252 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:01:12,253 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1957227927] [2024-06-28 01:01:12,253 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1957227927] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:01:12,253 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:01:12,253 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-06-28 01:01:12,254 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [986135796] [2024-06-28 01:01:12,254 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:01:12,255 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-06-28 01:01:12,255 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:01:12,256 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-06-28 01:01:12,256 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-06-28 01:01:12,281 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 34 [2024-06-28 01:01:12,282 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 37 places, 31 transitions, 83 flow. Second operand has 4 states, 4 states have (on average 15.25) internal successors, (61), 4 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:01:12,282 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:01:12,282 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 34 [2024-06-28 01:01:12,282 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:01:12,414 INFO L124 PetriNetUnfolderBase]: 186/364 cut-off events. [2024-06-28 01:01:12,415 INFO L125 PetriNetUnfolderBase]: For 57/57 co-relation queries the response was YES. [2024-06-28 01:01:12,416 INFO L83 FinitePrefix]: Finished finitePrefix Result has 796 conditions, 364 events. 186/364 cut-off events. For 57/57 co-relation queries the response was YES. Maximal size of possible extension queue 32. Compared 1693 event pairs, 62 based on Foata normal form. 2/360 useless extension candidates. Maximal degree in co-relation 784. Up to 308 conditions per place. [2024-06-28 01:01:12,418 INFO L140 encePairwiseOnDemand]: 28/34 looper letters, 29 selfloop transitions, 5 changer transitions 0/45 dead transitions. [2024-06-28 01:01:12,418 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 40 places, 45 transitions, 185 flow [2024-06-28 01:01:12,421 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-06-28 01:01:12,421 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-06-28 01:01:12,422 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 92 transitions. [2024-06-28 01:01:12,423 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6764705882352942 [2024-06-28 01:01:12,423 INFO L175 Difference]: Start difference. First operand has 37 places, 31 transitions, 83 flow. Second operand 4 states and 92 transitions. [2024-06-28 01:01:12,424 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 40 places, 45 transitions, 185 flow [2024-06-28 01:01:12,425 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 39 places, 45 transitions, 182 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-06-28 01:01:12,428 INFO L231 Difference]: Finished difference. Result has 40 places, 33 transitions, 107 flow [2024-06-28 01:01:12,428 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=34, PETRI_DIFFERENCE_MINUEND_FLOW=80, PETRI_DIFFERENCE_MINUEND_PLACES=36, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=31, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=26, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=107, PETRI_PLACES=40, PETRI_TRANSITIONS=33} [2024-06-28 01:01:12,429 INFO L281 CegarLoopForPetriNet]: 36 programPoint places, 4 predicate places. [2024-06-28 01:01:12,429 INFO L495 AbstractCegarLoop]: Abstraction has has 40 places, 33 transitions, 107 flow [2024-06-28 01:01:12,429 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 15.25) internal successors, (61), 4 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:01:12,429 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:01:12,430 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:01:12,430 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-06-28 01:01:12,431 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2024-06-28 01:01:12,433 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:01:12,435 INFO L85 PathProgramCache]: Analyzing trace with hash -723043407, now seen corresponding path program 1 times [2024-06-28 01:01:12,436 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:01:12,436 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1474864410] [2024-06-28 01:01:12,437 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:01:12,437 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:01:12,445 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:01:12,513 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:01:12,514 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:01:12,514 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1474864410] [2024-06-28 01:01:12,514 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1474864410] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:01:12,514 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:01:12,515 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-06-28 01:01:12,515 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [348914447] [2024-06-28 01:01:12,515 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:01:12,515 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-06-28 01:01:12,516 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:01:12,516 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-06-28 01:01:12,516 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2024-06-28 01:01:12,538 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 34 [2024-06-28 01:01:12,539 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 40 places, 33 transitions, 107 flow. Second operand has 5 states, 5 states have (on average 15.2) internal successors, (76), 5 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:01:12,539 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:01:12,540 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 34 [2024-06-28 01:01:12,540 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:01:12,648 INFO L124 PetriNetUnfolderBase]: 208/423 cut-off events. [2024-06-28 01:01:12,648 INFO L125 PetriNetUnfolderBase]: For 172/172 co-relation queries the response was YES. [2024-06-28 01:01:12,651 INFO L83 FinitePrefix]: Finished finitePrefix Result has 976 conditions, 423 events. 208/423 cut-off events. For 172/172 co-relation queries the response was YES. Maximal size of possible extension queue 38. Compared 2077 event pairs, 43 based on Foata normal form. 4/421 useless extension candidates. Maximal degree in co-relation 962. Up to 239 conditions per place. [2024-06-28 01:01:12,655 INFO L140 encePairwiseOnDemand]: 25/34 looper letters, 41 selfloop transitions, 14 changer transitions 0/66 dead transitions. [2024-06-28 01:01:12,655 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 44 places, 66 transitions, 307 flow [2024-06-28 01:01:12,655 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-06-28 01:01:12,656 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-06-28 01:01:12,660 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 125 transitions. [2024-06-28 01:01:12,662 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.7352941176470589 [2024-06-28 01:01:12,662 INFO L175 Difference]: Start difference. First operand has 40 places, 33 transitions, 107 flow. Second operand 5 states and 125 transitions. [2024-06-28 01:01:12,662 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 44 places, 66 transitions, 307 flow [2024-06-28 01:01:12,665 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 42 places, 66 transitions, 298 flow, removed 1 selfloop flow, removed 2 redundant places. [2024-06-28 01:01:12,667 INFO L231 Difference]: Finished difference. Result has 45 places, 44 transitions, 195 flow [2024-06-28 01:01:12,667 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=34, PETRI_DIFFERENCE_MINUEND_FLOW=98, PETRI_DIFFERENCE_MINUEND_PLACES=38, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=33, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=24, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=195, PETRI_PLACES=45, PETRI_TRANSITIONS=44} [2024-06-28 01:01:12,669 INFO L281 CegarLoopForPetriNet]: 36 programPoint places, 9 predicate places. [2024-06-28 01:01:12,669 INFO L495 AbstractCegarLoop]: Abstraction has has 45 places, 44 transitions, 195 flow [2024-06-28 01:01:12,669 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 15.2) internal successors, (76), 5 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:01:12,669 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:01:12,669 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:01:12,670 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-06-28 01:01:12,676 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2024-06-28 01:01:12,676 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:01:12,676 INFO L85 PathProgramCache]: Analyzing trace with hash -1640761488, now seen corresponding path program 1 times [2024-06-28 01:01:12,677 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:01:12,677 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [363458647] [2024-06-28 01:01:12,677 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:01:12,677 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:01:12,687 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:01:12,756 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:01:12,756 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:01:12,756 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [363458647] [2024-06-28 01:01:12,757 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [363458647] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:01:12,757 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:01:12,757 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-06-28 01:01:12,757 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1815129458] [2024-06-28 01:01:12,757 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:01:12,758 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-06-28 01:01:12,758 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:01:12,758 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-06-28 01:01:12,758 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2024-06-28 01:01:12,803 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 34 [2024-06-28 01:01:12,804 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 45 places, 44 transitions, 195 flow. Second operand has 6 states, 6 states have (on average 15.166666666666666) internal successors, (91), 6 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:01:12,804 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:01:12,804 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 34 [2024-06-28 01:01:12,805 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:01:12,928 INFO L124 PetriNetUnfolderBase]: 249/516 cut-off events. [2024-06-28 01:01:12,929 INFO L125 PetriNetUnfolderBase]: For 518/518 co-relation queries the response was YES. [2024-06-28 01:01:12,930 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1482 conditions, 516 events. 249/516 cut-off events. For 518/518 co-relation queries the response was YES. Maximal size of possible extension queue 50. Compared 2772 event pairs, 29 based on Foata normal form. 14/523 useless extension candidates. Maximal degree in co-relation 1465. Up to 200 conditions per place. [2024-06-28 01:01:12,933 INFO L140 encePairwiseOnDemand]: 25/34 looper letters, 46 selfloop transitions, 16 changer transitions 0/73 dead transitions. [2024-06-28 01:01:12,933 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 49 places, 73 transitions, 405 flow [2024-06-28 01:01:12,934 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-28 01:01:12,934 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-28 01:01:12,934 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 146 transitions. [2024-06-28 01:01:12,935 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.7156862745098039 [2024-06-28 01:01:12,935 INFO L175 Difference]: Start difference. First operand has 45 places, 44 transitions, 195 flow. Second operand 6 states and 146 transitions. [2024-06-28 01:01:12,935 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 49 places, 73 transitions, 405 flow [2024-06-28 01:01:12,938 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 49 places, 73 transitions, 401 flow, removed 2 selfloop flow, removed 0 redundant places. [2024-06-28 01:01:12,939 INFO L231 Difference]: Finished difference. Result has 50 places, 44 transitions, 229 flow [2024-06-28 01:01:12,939 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=34, PETRI_DIFFERENCE_MINUEND_FLOW=183, PETRI_DIFFERENCE_MINUEND_PLACES=44, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=43, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=15, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=27, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=229, PETRI_PLACES=50, PETRI_TRANSITIONS=44} [2024-06-28 01:01:12,940 INFO L281 CegarLoopForPetriNet]: 36 programPoint places, 14 predicate places. [2024-06-28 01:01:12,940 INFO L495 AbstractCegarLoop]: Abstraction has has 50 places, 44 transitions, 229 flow [2024-06-28 01:01:12,940 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 15.166666666666666) internal successors, (91), 6 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:01:12,940 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:01:12,941 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:01:12,941 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-06-28 01:01:12,941 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2024-06-28 01:01:12,941 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:01:12,942 INFO L85 PathProgramCache]: Analyzing trace with hash 122830883, now seen corresponding path program 1 times [2024-06-28 01:01:12,942 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:01:12,942 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [245977919] [2024-06-28 01:01:12,942 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:01:12,942 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:01:12,950 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:01:13,015 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:01:13,015 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:01:13,016 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [245977919] [2024-06-28 01:01:13,016 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [245977919] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:01:13,016 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:01:13,016 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-06-28 01:01:13,016 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [549929434] [2024-06-28 01:01:13,016 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:01:13,017 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-06-28 01:01:13,017 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:01:13,017 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-06-28 01:01:13,017 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-06-28 01:01:13,038 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 34 [2024-06-28 01:01:13,038 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 50 places, 44 transitions, 229 flow. Second operand has 4 states, 4 states have (on average 16.0) internal successors, (64), 4 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:01:13,038 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:01:13,039 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 34 [2024-06-28 01:01:13,039 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:01:13,127 INFO L124 PetriNetUnfolderBase]: 247/495 cut-off events. [2024-06-28 01:01:13,127 INFO L125 PetriNetUnfolderBase]: For 720/720 co-relation queries the response was YES. [2024-06-28 01:01:13,130 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1619 conditions, 495 events. 247/495 cut-off events. For 720/720 co-relation queries the response was YES. Maximal size of possible extension queue 48. Compared 2569 event pairs, 45 based on Foata normal form. 1/495 useless extension candidates. Maximal degree in co-relation 1599. Up to 433 conditions per place. [2024-06-28 01:01:13,132 INFO L140 encePairwiseOnDemand]: 29/34 looper letters, 39 selfloop transitions, 5 changer transitions 0/55 dead transitions. [2024-06-28 01:01:13,132 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 53 places, 55 transitions, 355 flow [2024-06-28 01:01:13,133 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-06-28 01:01:13,133 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-06-28 01:01:13,133 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 87 transitions. [2024-06-28 01:01:13,134 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6397058823529411 [2024-06-28 01:01:13,134 INFO L175 Difference]: Start difference. First operand has 50 places, 44 transitions, 229 flow. Second operand 4 states and 87 transitions. [2024-06-28 01:01:13,134 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 53 places, 55 transitions, 355 flow [2024-06-28 01:01:13,139 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 49 places, 55 transitions, 315 flow, removed 5 selfloop flow, removed 4 redundant places. [2024-06-28 01:01:13,140 INFO L231 Difference]: Finished difference. Result has 50 places, 46 transitions, 226 flow [2024-06-28 01:01:13,144 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=34, PETRI_DIFFERENCE_MINUEND_FLOW=191, PETRI_DIFFERENCE_MINUEND_PLACES=46, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=44, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=39, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=226, PETRI_PLACES=50, PETRI_TRANSITIONS=46} [2024-06-28 01:01:13,147 INFO L281 CegarLoopForPetriNet]: 36 programPoint places, 14 predicate places. [2024-06-28 01:01:13,147 INFO L495 AbstractCegarLoop]: Abstraction has has 50 places, 46 transitions, 226 flow [2024-06-28 01:01:13,147 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 16.0) internal successors, (64), 4 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:01:13,147 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:01:13,153 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:01:13,154 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-06-28 01:01:13,154 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2024-06-28 01:01:13,154 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:01:13,154 INFO L85 PathProgramCache]: Analyzing trace with hash -487929909, now seen corresponding path program 1 times [2024-06-28 01:01:13,154 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:01:13,155 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [676186273] [2024-06-28 01:01:13,155 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:01:13,155 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:01:13,162 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:01:13,217 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:01:13,217 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:01:13,217 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [676186273] [2024-06-28 01:01:13,218 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [676186273] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:01:13,218 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:01:13,218 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-06-28 01:01:13,218 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [843557833] [2024-06-28 01:01:13,218 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:01:13,219 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-06-28 01:01:13,219 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:01:13,219 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-06-28 01:01:13,219 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2024-06-28 01:01:13,242 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 34 [2024-06-28 01:01:13,242 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 50 places, 46 transitions, 226 flow. Second operand has 5 states, 5 states have (on average 15.8) internal successors, (79), 5 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:01:13,242 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:01:13,243 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 34 [2024-06-28 01:01:13,243 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:01:13,318 INFO L124 PetriNetUnfolderBase]: 252/539 cut-off events. [2024-06-28 01:01:13,318 INFO L125 PetriNetUnfolderBase]: For 744/746 co-relation queries the response was YES. [2024-06-28 01:01:13,320 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1595 conditions, 539 events. 252/539 cut-off events. For 744/746 co-relation queries the response was YES. Maximal size of possible extension queue 51. Compared 2992 event pairs, 54 based on Foata normal form. 3/536 useless extension candidates. Maximal degree in co-relation 1574. Up to 335 conditions per place. [2024-06-28 01:01:13,322 INFO L140 encePairwiseOnDemand]: 26/34 looper letters, 35 selfloop transitions, 17 changer transitions 0/63 dead transitions. [2024-06-28 01:01:13,323 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 54 places, 63 transitions, 396 flow [2024-06-28 01:01:13,323 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-06-28 01:01:13,323 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-06-28 01:01:13,324 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 117 transitions. [2024-06-28 01:01:13,324 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6882352941176471 [2024-06-28 01:01:13,324 INFO L175 Difference]: Start difference. First operand has 50 places, 46 transitions, 226 flow. Second operand 5 states and 117 transitions. [2024-06-28 01:01:13,324 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 54 places, 63 transitions, 396 flow [2024-06-28 01:01:13,326 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 52 places, 63 transitions, 381 flow, removed 4 selfloop flow, removed 2 redundant places. [2024-06-28 01:01:13,327 INFO L231 Difference]: Finished difference. Result has 53 places, 49 transitions, 271 flow [2024-06-28 01:01:13,327 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=34, PETRI_DIFFERENCE_MINUEND_FLOW=211, PETRI_DIFFERENCE_MINUEND_PLACES=48, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=46, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=31, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=271, PETRI_PLACES=53, PETRI_TRANSITIONS=49} [2024-06-28 01:01:13,328 INFO L281 CegarLoopForPetriNet]: 36 programPoint places, 17 predicate places. [2024-06-28 01:01:13,328 INFO L495 AbstractCegarLoop]: Abstraction has has 53 places, 49 transitions, 271 flow [2024-06-28 01:01:13,328 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 15.8) internal successors, (79), 5 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:01:13,328 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:01:13,329 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:01:13,329 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-06-28 01:01:13,329 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2024-06-28 01:01:13,329 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:01:13,330 INFO L85 PathProgramCache]: Analyzing trace with hash 1059486432, now seen corresponding path program 1 times [2024-06-28 01:01:13,330 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:01:13,330 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [311279814] [2024-06-28 01:01:13,330 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:01:13,330 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:01:13,337 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:01:13,390 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:01:13,391 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:01:13,391 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [311279814] [2024-06-28 01:01:13,391 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [311279814] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:01:13,391 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:01:13,391 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-06-28 01:01:13,392 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1601737992] [2024-06-28 01:01:13,392 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:01:13,392 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-06-28 01:01:13,392 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:01:13,393 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-06-28 01:01:13,393 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2024-06-28 01:01:13,416 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 34 [2024-06-28 01:01:13,416 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 53 places, 49 transitions, 271 flow. Second operand has 5 states, 5 states have (on average 15.8) internal successors, (79), 5 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:01:13,416 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:01:13,416 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 34 [2024-06-28 01:01:13,417 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:01:13,499 INFO L124 PetriNetUnfolderBase]: 256/527 cut-off events. [2024-06-28 01:01:13,500 INFO L125 PetriNetUnfolderBase]: For 850/850 co-relation queries the response was YES. [2024-06-28 01:01:13,501 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1729 conditions, 527 events. 256/527 cut-off events. For 850/850 co-relation queries the response was YES. Maximal size of possible extension queue 49. Compared 2845 event pairs, 54 based on Foata normal form. 2/522 useless extension candidates. Maximal degree in co-relation 1707. Up to 332 conditions per place. [2024-06-28 01:01:13,504 INFO L140 encePairwiseOnDemand]: 26/34 looper letters, 39 selfloop transitions, 18 changer transitions 0/68 dead transitions. [2024-06-28 01:01:13,504 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 57 places, 68 transitions, 466 flow [2024-06-28 01:01:13,504 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-06-28 01:01:13,505 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-06-28 01:01:13,505 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 119 transitions. [2024-06-28 01:01:13,505 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.7 [2024-06-28 01:01:13,505 INFO L175 Difference]: Start difference. First operand has 53 places, 49 transitions, 271 flow. Second operand 5 states and 119 transitions. [2024-06-28 01:01:13,506 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 57 places, 68 transitions, 466 flow [2024-06-28 01:01:13,508 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 56 places, 68 transitions, 449 flow, removed 4 selfloop flow, removed 1 redundant places. [2024-06-28 01:01:13,510 INFO L231 Difference]: Finished difference. Result has 57 places, 51 transitions, 318 flow [2024-06-28 01:01:13,510 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=34, PETRI_DIFFERENCE_MINUEND_FLOW=254, PETRI_DIFFERENCE_MINUEND_PLACES=52, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=49, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=16, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=32, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=318, PETRI_PLACES=57, PETRI_TRANSITIONS=51} [2024-06-28 01:01:13,510 INFO L281 CegarLoopForPetriNet]: 36 programPoint places, 21 predicate places. [2024-06-28 01:01:13,511 INFO L495 AbstractCegarLoop]: Abstraction has has 57 places, 51 transitions, 318 flow [2024-06-28 01:01:13,511 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 15.8) internal successors, (79), 5 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:01:13,511 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:01:13,511 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:01:13,511 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-06-28 01:01:13,512 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2024-06-28 01:01:13,512 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:01:13,512 INFO L85 PathProgramCache]: Analyzing trace with hash -999043548, now seen corresponding path program 2 times [2024-06-28 01:01:13,512 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:01:13,513 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1433678136] [2024-06-28 01:01:13,513 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:01:13,513 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:01:13,520 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:01:13,572 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:01:13,573 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:01:13,573 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1433678136] [2024-06-28 01:01:13,573 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1433678136] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:01:13,573 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:01:13,573 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-06-28 01:01:13,574 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1246513314] [2024-06-28 01:01:13,574 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:01:13,574 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-06-28 01:01:13,574 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:01:13,575 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-06-28 01:01:13,575 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2024-06-28 01:01:13,599 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 34 [2024-06-28 01:01:13,599 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 57 places, 51 transitions, 318 flow. Second operand has 5 states, 5 states have (on average 15.8) internal successors, (79), 5 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:01:13,600 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:01:13,600 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 34 [2024-06-28 01:01:13,600 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:01:13,699 INFO L124 PetriNetUnfolderBase]: 246/503 cut-off events. [2024-06-28 01:01:13,699 INFO L125 PetriNetUnfolderBase]: For 1203/1205 co-relation queries the response was YES. [2024-06-28 01:01:13,700 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1694 conditions, 503 events. 246/503 cut-off events. For 1203/1205 co-relation queries the response was YES. Maximal size of possible extension queue 47. Compared 2657 event pairs, 58 based on Foata normal form. 2/498 useless extension candidates. Maximal degree in co-relation 1670. Up to 314 conditions per place. [2024-06-28 01:01:13,703 INFO L140 encePairwiseOnDemand]: 26/34 looper letters, 35 selfloop transitions, 18 changer transitions 0/64 dead transitions. [2024-06-28 01:01:13,703 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 61 places, 64 transitions, 466 flow [2024-06-28 01:01:13,704 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-06-28 01:01:13,704 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-06-28 01:01:13,704 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 115 transitions. [2024-06-28 01:01:13,704 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6764705882352942 [2024-06-28 01:01:13,705 INFO L175 Difference]: Start difference. First operand has 57 places, 51 transitions, 318 flow. Second operand 5 states and 115 transitions. [2024-06-28 01:01:13,705 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 61 places, 64 transitions, 466 flow [2024-06-28 01:01:13,709 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 59 places, 64 transitions, 442 flow, removed 2 selfloop flow, removed 2 redundant places. [2024-06-28 01:01:13,711 INFO L231 Difference]: Finished difference. Result has 60 places, 51 transitions, 337 flow [2024-06-28 01:01:13,711 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=34, PETRI_DIFFERENCE_MINUEND_FLOW=294, PETRI_DIFFERENCE_MINUEND_PLACES=55, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=51, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=18, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=33, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=337, PETRI_PLACES=60, PETRI_TRANSITIONS=51} [2024-06-28 01:01:13,712 INFO L281 CegarLoopForPetriNet]: 36 programPoint places, 24 predicate places. [2024-06-28 01:01:13,712 INFO L495 AbstractCegarLoop]: Abstraction has has 60 places, 51 transitions, 337 flow [2024-06-28 01:01:13,712 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 15.8) internal successors, (79), 5 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:01:13,712 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:01:13,712 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:01:13,713 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-06-28 01:01:13,713 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2024-06-28 01:01:13,713 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:01:13,713 INFO L85 PathProgramCache]: Analyzing trace with hash -749181814, now seen corresponding path program 1 times [2024-06-28 01:01:13,714 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:01:13,714 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1546188549] [2024-06-28 01:01:13,714 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:01:13,714 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:01:13,721 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:01:13,824 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:01:13,825 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:01:13,825 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1546188549] [2024-06-28 01:01:13,825 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1546188549] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:01:13,825 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:01:13,825 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-06-28 01:01:13,826 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1027064983] [2024-06-28 01:01:13,826 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:01:13,826 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-06-28 01:01:13,827 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:01:13,827 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-06-28 01:01:13,827 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2024-06-28 01:01:13,866 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 34 [2024-06-28 01:01:13,867 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 60 places, 51 transitions, 337 flow. Second operand has 6 states, 6 states have (on average 15.666666666666666) internal successors, (94), 6 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:01:13,867 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:01:13,867 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 34 [2024-06-28 01:01:13,867 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:01:13,986 INFO L124 PetriNetUnfolderBase]: 285/598 cut-off events. [2024-06-28 01:01:13,987 INFO L125 PetriNetUnfolderBase]: For 1867/1869 co-relation queries the response was YES. [2024-06-28 01:01:13,988 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1930 conditions, 598 events. 285/598 cut-off events. For 1867/1869 co-relation queries the response was YES. Maximal size of possible extension queue 60. Compared 3380 event pairs, 62 based on Foata normal form. 12/603 useless extension candidates. Maximal degree in co-relation 1905. Up to 291 conditions per place. [2024-06-28 01:01:13,991 INFO L140 encePairwiseOnDemand]: 26/34 looper letters, 40 selfloop transitions, 21 changer transitions 0/72 dead transitions. [2024-06-28 01:01:13,991 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 65 places, 72 transitions, 529 flow [2024-06-28 01:01:13,991 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-28 01:01:13,992 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-28 01:01:13,992 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 138 transitions. [2024-06-28 01:01:13,992 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6764705882352942 [2024-06-28 01:01:13,993 INFO L175 Difference]: Start difference. First operand has 60 places, 51 transitions, 337 flow. Second operand 6 states and 138 transitions. [2024-06-28 01:01:13,993 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 65 places, 72 transitions, 529 flow [2024-06-28 01:01:13,997 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 59 places, 72 transitions, 463 flow, removed 1 selfloop flow, removed 6 redundant places. [2024-06-28 01:01:13,998 INFO L231 Difference]: Finished difference. Result has 60 places, 52 transitions, 329 flow [2024-06-28 01:01:13,998 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=34, PETRI_DIFFERENCE_MINUEND_FLOW=271, PETRI_DIFFERENCE_MINUEND_PLACES=54, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=51, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=20, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=30, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=329, PETRI_PLACES=60, PETRI_TRANSITIONS=52} [2024-06-28 01:01:13,999 INFO L281 CegarLoopForPetriNet]: 36 programPoint places, 24 predicate places. [2024-06-28 01:01:13,999 INFO L495 AbstractCegarLoop]: Abstraction has has 60 places, 52 transitions, 329 flow [2024-06-28 01:01:13,999 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 15.666666666666666) internal successors, (94), 6 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:01:14,000 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:01:14,000 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:01:14,000 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-06-28 01:01:14,000 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2024-06-28 01:01:14,001 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:01:14,001 INFO L85 PathProgramCache]: Analyzing trace with hash 947282812, now seen corresponding path program 1 times [2024-06-28 01:01:14,002 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:01:14,006 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [121590267] [2024-06-28 01:01:14,006 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:01:14,006 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:01:14,014 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:01:14,073 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:01:14,074 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:01:14,074 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [121590267] [2024-06-28 01:01:14,074 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [121590267] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:01:14,074 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:01:14,074 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-06-28 01:01:14,074 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [721755419] [2024-06-28 01:01:14,075 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:01:14,077 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-06-28 01:01:14,077 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:01:14,078 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-06-28 01:01:14,078 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2024-06-28 01:01:14,094 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 34 [2024-06-28 01:01:14,094 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 60 places, 52 transitions, 329 flow. Second operand has 5 states, 5 states have (on average 16.2) internal successors, (81), 5 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:01:14,094 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:01:14,094 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 34 [2024-06-28 01:01:14,094 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:01:14,180 INFO L124 PetriNetUnfolderBase]: 292/607 cut-off events. [2024-06-28 01:01:14,180 INFO L125 PetriNetUnfolderBase]: For 1441/1443 co-relation queries the response was YES. [2024-06-28 01:01:14,182 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1984 conditions, 607 events. 292/607 cut-off events. For 1441/1443 co-relation queries the response was YES. Maximal size of possible extension queue 62. Compared 3469 event pairs, 81 based on Foata normal form. 1/599 useless extension candidates. Maximal degree in co-relation 1958. Up to 399 conditions per place. [2024-06-28 01:01:14,185 INFO L140 encePairwiseOnDemand]: 27/34 looper letters, 39 selfloop transitions, 17 changer transitions 0/67 dead transitions. [2024-06-28 01:01:14,185 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 64 places, 67 transitions, 503 flow [2024-06-28 01:01:14,185 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-06-28 01:01:14,186 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-06-28 01:01:14,186 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 113 transitions. [2024-06-28 01:01:14,186 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6647058823529411 [2024-06-28 01:01:14,186 INFO L175 Difference]: Start difference. First operand has 60 places, 52 transitions, 329 flow. Second operand 5 states and 113 transitions. [2024-06-28 01:01:14,187 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 64 places, 67 transitions, 503 flow [2024-06-28 01:01:14,190 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 59 places, 67 transitions, 438 flow, removed 5 selfloop flow, removed 5 redundant places. [2024-06-28 01:01:14,191 INFO L231 Difference]: Finished difference. Result has 60 places, 54 transitions, 319 flow [2024-06-28 01:01:14,192 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=34, PETRI_DIFFERENCE_MINUEND_FLOW=270, PETRI_DIFFERENCE_MINUEND_PLACES=55, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=52, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=15, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=37, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=319, PETRI_PLACES=60, PETRI_TRANSITIONS=54} [2024-06-28 01:01:14,193 INFO L281 CegarLoopForPetriNet]: 36 programPoint places, 24 predicate places. [2024-06-28 01:01:14,194 INFO L495 AbstractCegarLoop]: Abstraction has has 60 places, 54 transitions, 319 flow [2024-06-28 01:01:14,194 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 16.2) internal successors, (81), 5 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:01:14,194 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:01:14,194 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:01:14,194 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-06-28 01:01:14,195 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2024-06-28 01:01:14,195 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:01:14,195 INFO L85 PathProgramCache]: Analyzing trace with hash 946509052, now seen corresponding path program 2 times [2024-06-28 01:01:14,195 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:01:14,196 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [572908423] [2024-06-28 01:01:14,196 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:01:14,196 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:01:14,202 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:01:14,262 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:01:14,263 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:01:14,263 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [572908423] [2024-06-28 01:01:14,263 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [572908423] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:01:14,263 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:01:14,263 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-06-28 01:01:14,263 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [516647254] [2024-06-28 01:01:14,264 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:01:14,264 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-06-28 01:01:14,264 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:01:14,265 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-06-28 01:01:14,265 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2024-06-28 01:01:14,284 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 34 [2024-06-28 01:01:14,284 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 60 places, 54 transitions, 319 flow. Second operand has 5 states, 5 states have (on average 16.2) internal successors, (81), 5 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:01:14,285 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:01:14,285 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 34 [2024-06-28 01:01:14,285 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:01:14,384 INFO L124 PetriNetUnfolderBase]: 290/607 cut-off events. [2024-06-28 01:01:14,384 INFO L125 PetriNetUnfolderBase]: For 1401/1403 co-relation queries the response was YES. [2024-06-28 01:01:14,385 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1879 conditions, 607 events. 290/607 cut-off events. For 1401/1403 co-relation queries the response was YES. Maximal size of possible extension queue 62. Compared 3454 event pairs, 78 based on Foata normal form. 3/600 useless extension candidates. Maximal degree in co-relation 1853. Up to 397 conditions per place. [2024-06-28 01:01:14,387 INFO L140 encePairwiseOnDemand]: 27/34 looper letters, 41 selfloop transitions, 17 changer transitions 0/69 dead transitions. [2024-06-28 01:01:14,387 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 64 places, 69 transitions, 469 flow [2024-06-28 01:01:14,388 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-06-28 01:01:14,388 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-06-28 01:01:14,389 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 115 transitions. [2024-06-28 01:01:14,389 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6764705882352942 [2024-06-28 01:01:14,389 INFO L175 Difference]: Start difference. First operand has 60 places, 54 transitions, 319 flow. Second operand 5 states and 115 transitions. [2024-06-28 01:01:14,389 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 64 places, 69 transitions, 469 flow [2024-06-28 01:01:14,392 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 61 places, 69 transitions, 435 flow, removed 0 selfloop flow, removed 3 redundant places. [2024-06-28 01:01:14,396 INFO L231 Difference]: Finished difference. Result has 62 places, 54 transitions, 324 flow [2024-06-28 01:01:14,396 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=34, PETRI_DIFFERENCE_MINUEND_FLOW=285, PETRI_DIFFERENCE_MINUEND_PLACES=57, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=54, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=17, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=37, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=324, PETRI_PLACES=62, PETRI_TRANSITIONS=54} [2024-06-28 01:01:14,396 INFO L281 CegarLoopForPetriNet]: 36 programPoint places, 26 predicate places. [2024-06-28 01:01:14,397 INFO L495 AbstractCegarLoop]: Abstraction has has 62 places, 54 transitions, 324 flow [2024-06-28 01:01:14,397 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 16.2) internal successors, (81), 5 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:01:14,397 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:01:14,397 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:01:14,397 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2024-06-28 01:01:14,397 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2024-06-28 01:01:14,398 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:01:14,398 INFO L85 PathProgramCache]: Analyzing trace with hash -671935745, now seen corresponding path program 1 times [2024-06-28 01:01:14,398 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:01:14,398 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1256525457] [2024-06-28 01:01:14,398 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:01:14,399 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:01:14,417 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:01:14,485 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:01:14,485 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:01:14,485 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1256525457] [2024-06-28 01:01:14,485 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1256525457] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:01:14,486 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:01:14,486 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-06-28 01:01:14,486 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1948623818] [2024-06-28 01:01:14,486 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:01:14,486 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-06-28 01:01:14,487 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:01:14,487 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-06-28 01:01:14,487 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-06-28 01:01:14,510 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 34 [2024-06-28 01:01:14,510 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 62 places, 54 transitions, 324 flow. Second operand has 6 states, 6 states have (on average 15.833333333333334) internal successors, (95), 6 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:01:14,511 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:01:14,511 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 34 [2024-06-28 01:01:14,511 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:01:14,615 INFO L124 PetriNetUnfolderBase]: 342/701 cut-off events. [2024-06-28 01:01:14,616 INFO L125 PetriNetUnfolderBase]: For 2096/2096 co-relation queries the response was YES. [2024-06-28 01:01:14,617 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2274 conditions, 701 events. 342/701 cut-off events. For 2096/2096 co-relation queries the response was YES. Maximal size of possible extension queue 71. Compared 4109 event pairs, 71 based on Foata normal form. 2/694 useless extension candidates. Maximal degree in co-relation 2248. Up to 264 conditions per place. [2024-06-28 01:01:14,621 INFO L140 encePairwiseOnDemand]: 27/34 looper letters, 48 selfloop transitions, 21 changer transitions 0/80 dead transitions. [2024-06-28 01:01:14,621 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 67 places, 80 transitions, 560 flow [2024-06-28 01:01:14,621 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-28 01:01:14,621 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-28 01:01:14,622 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 139 transitions. [2024-06-28 01:01:14,622 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6813725490196079 [2024-06-28 01:01:14,622 INFO L175 Difference]: Start difference. First operand has 62 places, 54 transitions, 324 flow. Second operand 6 states and 139 transitions. [2024-06-28 01:01:14,622 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 67 places, 80 transitions, 560 flow [2024-06-28 01:01:14,626 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 62 places, 80 transitions, 506 flow, removed 0 selfloop flow, removed 5 redundant places. [2024-06-28 01:01:14,628 INFO L231 Difference]: Finished difference. Result has 63 places, 55 transitions, 326 flow [2024-06-28 01:01:14,628 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=34, PETRI_DIFFERENCE_MINUEND_FLOW=270, PETRI_DIFFERENCE_MINUEND_PLACES=57, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=54, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=20, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=34, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=326, PETRI_PLACES=63, PETRI_TRANSITIONS=55} [2024-06-28 01:01:14,629 INFO L281 CegarLoopForPetriNet]: 36 programPoint places, 27 predicate places. [2024-06-28 01:01:14,629 INFO L495 AbstractCegarLoop]: Abstraction has has 63 places, 55 transitions, 326 flow [2024-06-28 01:01:14,631 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 15.833333333333334) internal successors, (95), 6 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:01:14,631 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:01:14,631 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:01:14,631 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2024-06-28 01:01:14,632 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2024-06-28 01:01:14,632 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:01:14,632 INFO L85 PathProgramCache]: Analyzing trace with hash -2062983305, now seen corresponding path program 2 times [2024-06-28 01:01:14,632 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:01:14,632 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1137676273] [2024-06-28 01:01:14,633 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:01:14,633 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:01:14,643 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:01:14,735 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:01:14,735 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:01:14,735 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1137676273] [2024-06-28 01:01:14,735 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1137676273] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:01:14,736 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:01:14,736 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-06-28 01:01:14,736 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1930613329] [2024-06-28 01:01:14,736 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:01:14,736 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-06-28 01:01:14,737 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:01:14,737 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-06-28 01:01:14,738 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2024-06-28 01:01:14,763 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 34 [2024-06-28 01:01:14,764 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 63 places, 55 transitions, 326 flow. Second operand has 6 states, 6 states have (on average 15.833333333333334) internal successors, (95), 6 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:01:14,764 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:01:14,764 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 34 [2024-06-28 01:01:14,764 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:01:14,873 INFO L124 PetriNetUnfolderBase]: 339/700 cut-off events. [2024-06-28 01:01:14,873 INFO L125 PetriNetUnfolderBase]: For 2063/2063 co-relation queries the response was YES. [2024-06-28 01:01:14,874 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2264 conditions, 700 events. 339/700 cut-off events. For 2063/2063 co-relation queries the response was YES. Maximal size of possible extension queue 71. Compared 4131 event pairs, 89 based on Foata normal form. 2/693 useless extension candidates. Maximal degree in co-relation 2238. Up to 478 conditions per place. [2024-06-28 01:01:14,878 INFO L140 encePairwiseOnDemand]: 26/34 looper letters, 42 selfloop transitions, 21 changer transitions 0/74 dead transitions. [2024-06-28 01:01:14,878 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 68 places, 74 transitions, 494 flow [2024-06-28 01:01:14,878 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-28 01:01:14,878 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-28 01:01:14,879 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 136 transitions. [2024-06-28 01:01:14,879 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6666666666666666 [2024-06-28 01:01:14,880 INFO L175 Difference]: Start difference. First operand has 63 places, 55 transitions, 326 flow. Second operand 6 states and 136 transitions. [2024-06-28 01:01:14,880 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 68 places, 74 transitions, 494 flow [2024-06-28 01:01:14,885 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 65 places, 74 transitions, 453 flow, removed 4 selfloop flow, removed 3 redundant places. [2024-06-28 01:01:14,887 INFO L231 Difference]: Finished difference. Result has 66 places, 55 transitions, 331 flow [2024-06-28 01:01:14,887 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=34, PETRI_DIFFERENCE_MINUEND_FLOW=285, PETRI_DIFFERENCE_MINUEND_PLACES=60, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=55, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=21, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=34, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=331, PETRI_PLACES=66, PETRI_TRANSITIONS=55} [2024-06-28 01:01:14,888 INFO L281 CegarLoopForPetriNet]: 36 programPoint places, 30 predicate places. [2024-06-28 01:01:14,888 INFO L495 AbstractCegarLoop]: Abstraction has has 66 places, 55 transitions, 331 flow [2024-06-28 01:01:14,889 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 15.833333333333334) internal successors, (95), 6 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:01:14,889 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:01:14,889 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:01:14,889 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2024-06-28 01:01:14,889 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2024-06-28 01:01:14,890 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:01:14,890 INFO L85 PathProgramCache]: Analyzing trace with hash 1498332217, now seen corresponding path program 1 times [2024-06-28 01:01:14,890 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:01:14,890 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [455717375] [2024-06-28 01:01:14,890 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:01:14,890 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:01:14,897 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:01:14,957 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:01:14,958 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:01:14,958 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [455717375] [2024-06-28 01:01:14,958 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [455717375] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:01:14,958 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:01:14,958 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-06-28 01:01:14,958 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [420240408] [2024-06-28 01:01:14,959 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:01:14,959 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-06-28 01:01:14,959 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:01:14,959 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-06-28 01:01:14,960 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2024-06-28 01:01:15,001 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 34 [2024-06-28 01:01:15,002 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 66 places, 55 transitions, 331 flow. Second operand has 6 states, 6 states have (on average 15.833333333333334) internal successors, (95), 6 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:01:15,002 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:01:15,002 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 34 [2024-06-28 01:01:15,002 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:01:15,139 INFO L124 PetriNetUnfolderBase]: 336/708 cut-off events. [2024-06-28 01:01:15,139 INFO L125 PetriNetUnfolderBase]: For 2335/2337 co-relation queries the response was YES. [2024-06-28 01:01:15,141 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2251 conditions, 708 events. 336/708 cut-off events. For 2335/2337 co-relation queries the response was YES. Maximal size of possible extension queue 74. Compared 4255 event pairs, 87 based on Foata normal form. 2/699 useless extension candidates. Maximal degree in co-relation 2224. Up to 473 conditions per place. [2024-06-28 01:01:15,144 INFO L140 encePairwiseOnDemand]: 26/34 looper letters, 40 selfloop transitions, 21 changer transitions 0/72 dead transitions. [2024-06-28 01:01:15,144 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 71 places, 72 transitions, 497 flow [2024-06-28 01:01:15,145 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-28 01:01:15,145 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-28 01:01:15,145 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 133 transitions. [2024-06-28 01:01:15,145 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6519607843137255 [2024-06-28 01:01:15,146 INFO L175 Difference]: Start difference. First operand has 66 places, 55 transitions, 331 flow. Second operand 6 states and 133 transitions. [2024-06-28 01:01:15,146 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 71 places, 72 transitions, 497 flow [2024-06-28 01:01:15,150 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 66 places, 72 transitions, 442 flow, removed 4 selfloop flow, removed 5 redundant places. [2024-06-28 01:01:15,152 INFO L231 Difference]: Finished difference. Result has 67 places, 56 transitions, 334 flow [2024-06-28 01:01:15,152 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=34, PETRI_DIFFERENCE_MINUEND_FLOW=276, PETRI_DIFFERENCE_MINUEND_PLACES=61, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=55, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=20, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=34, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=334, PETRI_PLACES=67, PETRI_TRANSITIONS=56} [2024-06-28 01:01:15,153 INFO L281 CegarLoopForPetriNet]: 36 programPoint places, 31 predicate places. [2024-06-28 01:01:15,153 INFO L495 AbstractCegarLoop]: Abstraction has has 67 places, 56 transitions, 334 flow [2024-06-28 01:01:15,153 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 15.833333333333334) internal successors, (95), 6 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:01:15,153 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:01:15,154 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:01:15,154 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2024-06-28 01:01:15,154 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2024-06-28 01:01:15,154 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:01:15,154 INFO L85 PathProgramCache]: Analyzing trace with hash 897808249, now seen corresponding path program 2 times [2024-06-28 01:01:15,155 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:01:15,155 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [273674722] [2024-06-28 01:01:15,155 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:01:15,155 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:01:15,164 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:01:15,227 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:01:15,227 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:01:15,227 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [273674722] [2024-06-28 01:01:15,227 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [273674722] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:01:15,228 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:01:15,228 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-06-28 01:01:15,228 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [883373949] [2024-06-28 01:01:15,228 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:01:15,228 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-06-28 01:01:15,229 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:01:15,229 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-06-28 01:01:15,229 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-06-28 01:01:15,268 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 34 [2024-06-28 01:01:15,269 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 67 places, 56 transitions, 334 flow. Second operand has 6 states, 6 states have (on average 15.833333333333334) internal successors, (95), 6 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:01:15,269 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:01:15,269 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 34 [2024-06-28 01:01:15,269 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:01:15,382 INFO L124 PetriNetUnfolderBase]: 333/686 cut-off events. [2024-06-28 01:01:15,383 INFO L125 PetriNetUnfolderBase]: For 2242/2244 co-relation queries the response was YES. [2024-06-28 01:01:15,384 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2163 conditions, 686 events. 333/686 cut-off events. For 2242/2244 co-relation queries the response was YES. Maximal size of possible extension queue 69. Compared 4046 event pairs, 83 based on Foata normal form. 2/680 useless extension candidates. Maximal degree in co-relation 2135. Up to 269 conditions per place. [2024-06-28 01:01:15,388 INFO L140 encePairwiseOnDemand]: 27/34 looper letters, 45 selfloop transitions, 21 changer transitions 0/77 dead transitions. [2024-06-28 01:01:15,388 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 72 places, 77 transitions, 542 flow [2024-06-28 01:01:15,388 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-28 01:01:15,388 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-28 01:01:15,389 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 136 transitions. [2024-06-28 01:01:15,389 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6666666666666666 [2024-06-28 01:01:15,389 INFO L175 Difference]: Start difference. First operand has 67 places, 56 transitions, 334 flow. Second operand 6 states and 136 transitions. [2024-06-28 01:01:15,389 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 72 places, 77 transitions, 542 flow [2024-06-28 01:01:15,396 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 68 places, 77 transitions, 494 flow, removed 4 selfloop flow, removed 4 redundant places. [2024-06-28 01:01:15,397 INFO L231 Difference]: Finished difference. Result has 69 places, 56 transitions, 332 flow [2024-06-28 01:01:15,397 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=34, PETRI_DIFFERENCE_MINUEND_FLOW=286, PETRI_DIFFERENCE_MINUEND_PLACES=63, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=56, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=21, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=35, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=332, PETRI_PLACES=69, PETRI_TRANSITIONS=56} [2024-06-28 01:01:15,398 INFO L281 CegarLoopForPetriNet]: 36 programPoint places, 33 predicate places. [2024-06-28 01:01:15,398 INFO L495 AbstractCegarLoop]: Abstraction has has 69 places, 56 transitions, 332 flow [2024-06-28 01:01:15,399 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 15.833333333333334) internal successors, (95), 6 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:01:15,399 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:01:15,399 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:01:15,399 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2024-06-28 01:01:15,399 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2024-06-28 01:01:15,399 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:01:15,399 INFO L85 PathProgramCache]: Analyzing trace with hash 1583913011, now seen corresponding path program 1 times [2024-06-28 01:01:15,400 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:01:15,401 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [178737113] [2024-06-28 01:01:15,401 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:01:15,401 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:01:15,421 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:01:15,494 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:01:15,494 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:01:15,494 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [178737113] [2024-06-28 01:01:15,496 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [178737113] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:01:15,496 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:01:15,496 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-06-28 01:01:15,496 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [316920329] [2024-06-28 01:01:15,496 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:01:15,497 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-06-28 01:01:15,497 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:01:15,498 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-06-28 01:01:15,498 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-06-28 01:01:15,505 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 19 out of 34 [2024-06-28 01:01:15,505 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 69 places, 56 transitions, 332 flow. Second operand has 4 states, 4 states have (on average 21.25) internal successors, (85), 4 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:01:15,505 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:01:15,506 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 19 of 34 [2024-06-28 01:01:15,506 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:01:15,586 INFO L124 PetriNetUnfolderBase]: 232/672 cut-off events. [2024-06-28 01:01:15,586 INFO L125 PetriNetUnfolderBase]: For 670/674 co-relation queries the response was YES. [2024-06-28 01:01:15,587 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1564 conditions, 672 events. 232/672 cut-off events. For 670/674 co-relation queries the response was YES. Maximal size of possible extension queue 60. Compared 4470 event pairs, 24 based on Foata normal form. 41/675 useless extension candidates. Maximal degree in co-relation 1535. Up to 238 conditions per place. [2024-06-28 01:01:15,590 INFO L140 encePairwiseOnDemand]: 29/34 looper letters, 20 selfloop transitions, 12 changer transitions 0/65 dead transitions. [2024-06-28 01:01:15,590 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 72 places, 65 transitions, 420 flow [2024-06-28 01:01:15,590 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-06-28 01:01:15,590 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-06-28 01:01:15,591 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 102 transitions. [2024-06-28 01:01:15,591 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.75 [2024-06-28 01:01:15,591 INFO L175 Difference]: Start difference. First operand has 69 places, 56 transitions, 332 flow. Second operand 4 states and 102 transitions. [2024-06-28 01:01:15,591 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 72 places, 65 transitions, 420 flow [2024-06-28 01:01:15,594 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 67 places, 65 transitions, 359 flow, removed 5 selfloop flow, removed 5 redundant places. [2024-06-28 01:01:15,595 INFO L231 Difference]: Finished difference. Result has 69 places, 57 transitions, 325 flow [2024-06-28 01:01:15,595 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=34, PETRI_DIFFERENCE_MINUEND_FLOW=271, PETRI_DIFFERENCE_MINUEND_PLACES=64, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=56, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=44, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=325, PETRI_PLACES=69, PETRI_TRANSITIONS=57} [2024-06-28 01:01:15,595 INFO L281 CegarLoopForPetriNet]: 36 programPoint places, 33 predicate places. [2024-06-28 01:01:15,596 INFO L495 AbstractCegarLoop]: Abstraction has has 69 places, 57 transitions, 325 flow [2024-06-28 01:01:15,596 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 21.25) internal successors, (85), 4 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:01:15,596 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:01:15,596 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:01:15,596 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2024-06-28 01:01:15,596 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2024-06-28 01:01:15,597 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:01:15,597 INFO L85 PathProgramCache]: Analyzing trace with hash -612289119, now seen corresponding path program 1 times [2024-06-28 01:01:15,597 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:01:15,597 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [197761506] [2024-06-28 01:01:15,597 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:01:15,597 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:01:15,604 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:01:15,706 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:01:15,706 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:01:15,706 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [197761506] [2024-06-28 01:01:15,706 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [197761506] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:01:15,706 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:01:15,706 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-06-28 01:01:15,707 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [720455231] [2024-06-28 01:01:15,707 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:01:15,707 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-06-28 01:01:15,707 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:01:15,707 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-06-28 01:01:15,708 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-06-28 01:01:15,735 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 34 [2024-06-28 01:01:15,736 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 69 places, 57 transitions, 325 flow. Second operand has 6 states, 6 states have (on average 16.0) internal successors, (96), 6 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:01:15,736 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:01:15,736 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 34 [2024-06-28 01:01:15,736 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:01:15,833 INFO L124 PetriNetUnfolderBase]: 295/694 cut-off events. [2024-06-28 01:01:15,833 INFO L125 PetriNetUnfolderBase]: For 2233/2239 co-relation queries the response was YES. [2024-06-28 01:01:15,835 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2009 conditions, 694 events. 295/694 cut-off events. For 2233/2239 co-relation queries the response was YES. Maximal size of possible extension queue 63. Compared 4289 event pairs, 120 based on Foata normal form. 8/663 useless extension candidates. Maximal degree in co-relation 1979. Up to 296 conditions per place. [2024-06-28 01:01:15,837 INFO L140 encePairwiseOnDemand]: 27/34 looper letters, 42 selfloop transitions, 21 changer transitions 0/75 dead transitions. [2024-06-28 01:01:15,837 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 74 places, 75 transitions, 503 flow [2024-06-28 01:01:15,838 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-28 01:01:15,838 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-28 01:01:15,838 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 132 transitions. [2024-06-28 01:01:15,839 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6470588235294118 [2024-06-28 01:01:15,839 INFO L175 Difference]: Start difference. First operand has 69 places, 57 transitions, 325 flow. Second operand 6 states and 132 transitions. [2024-06-28 01:01:15,839 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 74 places, 75 transitions, 503 flow [2024-06-28 01:01:15,844 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 72 places, 75 transitions, 490 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-06-28 01:01:15,845 INFO L231 Difference]: Finished difference. Result has 73 places, 57 transitions, 357 flow [2024-06-28 01:01:15,845 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=34, PETRI_DIFFERENCE_MINUEND_FLOW=312, PETRI_DIFFERENCE_MINUEND_PLACES=67, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=57, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=21, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=36, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=357, PETRI_PLACES=73, PETRI_TRANSITIONS=57} [2024-06-28 01:01:15,845 INFO L281 CegarLoopForPetriNet]: 36 programPoint places, 37 predicate places. [2024-06-28 01:01:15,845 INFO L495 AbstractCegarLoop]: Abstraction has has 73 places, 57 transitions, 357 flow [2024-06-28 01:01:15,846 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 16.0) internal successors, (96), 6 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:01:15,846 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:01:15,846 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:01:15,846 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2024-06-28 01:01:15,846 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2024-06-28 01:01:15,846 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:01:15,846 INFO L85 PathProgramCache]: Analyzing trace with hash 571093045, now seen corresponding path program 2 times [2024-06-28 01:01:15,846 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:01:15,847 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1983366933] [2024-06-28 01:01:15,847 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:01:15,847 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:01:15,853 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:01:15,904 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:01:15,904 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:01:15,904 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1983366933] [2024-06-28 01:01:15,904 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1983366933] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:01:15,904 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:01:15,904 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-06-28 01:01:15,904 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [451817131] [2024-06-28 01:01:15,905 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:01:15,905 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-06-28 01:01:15,905 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:01:15,905 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-06-28 01:01:15,905 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2024-06-28 01:01:15,927 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 34 [2024-06-28 01:01:15,927 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 73 places, 57 transitions, 357 flow. Second operand has 6 states, 6 states have (on average 16.0) internal successors, (96), 6 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:01:15,927 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:01:15,927 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 34 [2024-06-28 01:01:15,927 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:01:16,026 INFO L124 PetriNetUnfolderBase]: 318/757 cut-off events. [2024-06-28 01:01:16,026 INFO L125 PetriNetUnfolderBase]: For 2562/2574 co-relation queries the response was YES. [2024-06-28 01:01:16,028 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2245 conditions, 757 events. 318/757 cut-off events. For 2562/2574 co-relation queries the response was YES. Maximal size of possible extension queue 71. Compared 4874 event pairs, 149 based on Foata normal form. 8/719 useless extension candidates. Maximal degree in co-relation 2214. Up to 484 conditions per place. [2024-06-28 01:01:16,030 INFO L140 encePairwiseOnDemand]: 28/34 looper letters, 46 selfloop transitions, 13 changer transitions 0/71 dead transitions. [2024-06-28 01:01:16,031 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 78 places, 71 transitions, 515 flow [2024-06-28 01:01:16,031 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-28 01:01:16,031 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-28 01:01:16,032 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 123 transitions. [2024-06-28 01:01:16,032 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6029411764705882 [2024-06-28 01:01:16,032 INFO L175 Difference]: Start difference. First operand has 73 places, 57 transitions, 357 flow. Second operand 6 states and 123 transitions. [2024-06-28 01:01:16,032 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 78 places, 71 transitions, 515 flow [2024-06-28 01:01:16,038 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 74 places, 71 transitions, 474 flow, removed 0 selfloop flow, removed 4 redundant places. [2024-06-28 01:01:16,039 INFO L231 Difference]: Finished difference. Result has 75 places, 57 transitions, 345 flow [2024-06-28 01:01:16,039 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=34, PETRI_DIFFERENCE_MINUEND_FLOW=316, PETRI_DIFFERENCE_MINUEND_PLACES=69, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=57, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=13, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=44, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=345, PETRI_PLACES=75, PETRI_TRANSITIONS=57} [2024-06-28 01:01:16,039 INFO L281 CegarLoopForPetriNet]: 36 programPoint places, 39 predicate places. [2024-06-28 01:01:16,039 INFO L495 AbstractCegarLoop]: Abstraction has has 75 places, 57 transitions, 345 flow [2024-06-28 01:01:16,040 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 16.0) internal successors, (96), 6 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:01:16,040 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:01:16,040 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:01:16,040 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2024-06-28 01:01:16,040 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2024-06-28 01:01:16,041 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:01:16,041 INFO L85 PathProgramCache]: Analyzing trace with hash -937996131, now seen corresponding path program 3 times [2024-06-28 01:01:16,041 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:01:16,041 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [596776414] [2024-06-28 01:01:16,041 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:01:16,041 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:01:16,047 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:01:16,099 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:01:16,100 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:01:16,100 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [596776414] [2024-06-28 01:01:16,100 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [596776414] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:01:16,100 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:01:16,100 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-06-28 01:01:16,100 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1238486101] [2024-06-28 01:01:16,100 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:01:16,101 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-06-28 01:01:16,101 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:01:16,101 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-06-28 01:01:16,101 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-06-28 01:01:16,124 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 34 [2024-06-28 01:01:16,125 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 75 places, 57 transitions, 345 flow. Second operand has 6 states, 6 states have (on average 16.0) internal successors, (96), 6 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:01:16,125 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:01:16,125 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 34 [2024-06-28 01:01:16,125 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:01:16,269 INFO L124 PetriNetUnfolderBase]: 371/912 cut-off events. [2024-06-28 01:01:16,269 INFO L125 PetriNetUnfolderBase]: For 3736/3749 co-relation queries the response was YES. [2024-06-28 01:01:16,271 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2653 conditions, 912 events. 371/912 cut-off events. For 3736/3749 co-relation queries the response was YES. Maximal size of possible extension queue 89. Compared 6289 event pairs, 180 based on Foata normal form. 14/877 useless extension candidates. Maximal degree in co-relation 2621. Up to 401 conditions per place. [2024-06-28 01:01:16,274 INFO L140 encePairwiseOnDemand]: 27/34 looper letters, 49 selfloop transitions, 18 changer transitions 0/79 dead transitions. [2024-06-28 01:01:16,275 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 80 places, 79 transitions, 575 flow [2024-06-28 01:01:16,275 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-28 01:01:16,275 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-28 01:01:16,276 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 135 transitions. [2024-06-28 01:01:16,276 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6617647058823529 [2024-06-28 01:01:16,276 INFO L175 Difference]: Start difference. First operand has 75 places, 57 transitions, 345 flow. Second operand 6 states and 135 transitions. [2024-06-28 01:01:16,276 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 80 places, 79 transitions, 575 flow [2024-06-28 01:01:16,283 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 76 places, 79 transitions, 550 flow, removed 0 selfloop flow, removed 4 redundant places. [2024-06-28 01:01:16,285 INFO L231 Difference]: Finished difference. Result has 77 places, 57 transitions, 359 flow [2024-06-28 01:01:16,285 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=34, PETRI_DIFFERENCE_MINUEND_FLOW=320, PETRI_DIFFERENCE_MINUEND_PLACES=71, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=57, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=18, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=39, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=359, PETRI_PLACES=77, PETRI_TRANSITIONS=57} [2024-06-28 01:01:16,285 INFO L281 CegarLoopForPetriNet]: 36 programPoint places, 41 predicate places. [2024-06-28 01:01:16,285 INFO L495 AbstractCegarLoop]: Abstraction has has 77 places, 57 transitions, 359 flow [2024-06-28 01:01:16,286 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 16.0) internal successors, (96), 6 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:01:16,286 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:01:16,286 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:01:16,286 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2024-06-28 01:01:16,286 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2024-06-28 01:01:16,287 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:01:16,287 INFO L85 PathProgramCache]: Analyzing trace with hash -932485881, now seen corresponding path program 4 times [2024-06-28 01:01:16,287 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:01:16,287 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1500600647] [2024-06-28 01:01:16,287 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:01:16,287 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:01:16,293 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:01:16,348 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:01:16,348 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:01:16,349 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1500600647] [2024-06-28 01:01:16,349 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1500600647] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:01:16,349 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:01:16,349 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-06-28 01:01:16,349 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [727523069] [2024-06-28 01:01:16,349 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:01:16,350 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-06-28 01:01:16,350 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:01:16,350 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-06-28 01:01:16,351 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2024-06-28 01:01:16,374 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 34 [2024-06-28 01:01:16,374 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 77 places, 57 transitions, 359 flow. Second operand has 6 states, 6 states have (on average 16.0) internal successors, (96), 6 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:01:16,375 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:01:16,375 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 34 [2024-06-28 01:01:16,375 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:01:16,503 INFO L124 PetriNetUnfolderBase]: 405/967 cut-off events. [2024-06-28 01:01:16,504 INFO L125 PetriNetUnfolderBase]: For 4478/4490 co-relation queries the response was YES. [2024-06-28 01:01:16,506 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2860 conditions, 967 events. 405/967 cut-off events. For 4478/4490 co-relation queries the response was YES. Maximal size of possible extension queue 100. Compared 6832 event pairs, 256 based on Foata normal form. 13/920 useless extension candidates. Maximal degree in co-relation 2827. Up to 682 conditions per place. [2024-06-28 01:01:16,510 INFO L140 encePairwiseOnDemand]: 27/34 looper letters, 41 selfloop transitions, 17 changer transitions 0/70 dead transitions. [2024-06-28 01:01:16,510 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 82 places, 70 transitions, 511 flow [2024-06-28 01:01:16,511 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-28 01:01:16,511 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-28 01:01:16,511 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 127 transitions. [2024-06-28 01:01:16,511 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6225490196078431 [2024-06-28 01:01:16,512 INFO L175 Difference]: Start difference. First operand has 77 places, 57 transitions, 359 flow. Second operand 6 states and 127 transitions. [2024-06-28 01:01:16,512 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 82 places, 70 transitions, 511 flow [2024-06-28 01:01:16,519 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 78 places, 70 transitions, 476 flow, removed 0 selfloop flow, removed 4 redundant places. [2024-06-28 01:01:16,520 INFO L231 Difference]: Finished difference. Result has 79 places, 57 transitions, 362 flow [2024-06-28 01:01:16,520 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=34, PETRI_DIFFERENCE_MINUEND_FLOW=324, PETRI_DIFFERENCE_MINUEND_PLACES=73, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=57, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=17, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=40, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=362, PETRI_PLACES=79, PETRI_TRANSITIONS=57} [2024-06-28 01:01:16,521 INFO L281 CegarLoopForPetriNet]: 36 programPoint places, 43 predicate places. [2024-06-28 01:01:16,521 INFO L495 AbstractCegarLoop]: Abstraction has has 79 places, 57 transitions, 362 flow [2024-06-28 01:01:16,521 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 16.0) internal successors, (96), 6 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:01:16,521 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:01:16,522 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:01:16,522 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2024-06-28 01:01:16,522 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2024-06-28 01:01:16,522 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:01:16,522 INFO L85 PathProgramCache]: Analyzing trace with hash -937848261, now seen corresponding path program 5 times [2024-06-28 01:01:16,523 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:01:16,523 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [162707469] [2024-06-28 01:01:16,523 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:01:16,523 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:01:16,529 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:01:16,589 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:01:16,590 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:01:16,590 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [162707469] [2024-06-28 01:01:16,590 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [162707469] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:01:16,590 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:01:16,590 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-06-28 01:01:16,591 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1510485376] [2024-06-28 01:01:16,591 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:01:16,591 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-06-28 01:01:16,591 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:01:16,592 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-06-28 01:01:16,592 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2024-06-28 01:01:16,616 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 34 [2024-06-28 01:01:16,617 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 79 places, 57 transitions, 362 flow. Second operand has 6 states, 6 states have (on average 16.0) internal successors, (96), 6 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:01:16,617 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:01:16,617 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 34 [2024-06-28 01:01:16,617 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:01:16,749 INFO L124 PetriNetUnfolderBase]: 395/950 cut-off events. [2024-06-28 01:01:16,750 INFO L125 PetriNetUnfolderBase]: For 3371/3384 co-relation queries the response was YES. [2024-06-28 01:01:16,752 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2673 conditions, 950 events. 395/950 cut-off events. For 3371/3384 co-relation queries the response was YES. Maximal size of possible extension queue 97. Compared 6692 event pairs, 245 based on Foata normal form. 16/908 useless extension candidates. Maximal degree in co-relation 2639. Up to 664 conditions per place. [2024-06-28 01:01:16,755 INFO L140 encePairwiseOnDemand]: 27/34 looper letters, 44 selfloop transitions, 17 changer transitions 0/73 dead transitions. [2024-06-28 01:01:16,756 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 84 places, 73 transitions, 528 flow [2024-06-28 01:01:16,756 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-28 01:01:16,756 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-28 01:01:16,757 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 130 transitions. [2024-06-28 01:01:16,757 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6372549019607843 [2024-06-28 01:01:16,757 INFO L175 Difference]: Start difference. First operand has 79 places, 57 transitions, 362 flow. Second operand 6 states and 130 transitions. [2024-06-28 01:01:16,757 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 84 places, 73 transitions, 528 flow [2024-06-28 01:01:16,769 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 80 places, 73 transitions, 496 flow, removed 0 selfloop flow, removed 4 redundant places. [2024-06-28 01:01:16,770 INFO L231 Difference]: Finished difference. Result has 81 places, 57 transitions, 368 flow [2024-06-28 01:01:16,770 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=34, PETRI_DIFFERENCE_MINUEND_FLOW=330, PETRI_DIFFERENCE_MINUEND_PLACES=75, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=57, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=17, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=40, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=368, PETRI_PLACES=81, PETRI_TRANSITIONS=57} [2024-06-28 01:01:16,787 INFO L281 CegarLoopForPetriNet]: 36 programPoint places, 45 predicate places. [2024-06-28 01:01:16,787 INFO L495 AbstractCegarLoop]: Abstraction has has 81 places, 57 transitions, 368 flow [2024-06-28 01:01:16,788 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 16.0) internal successors, (96), 6 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:01:16,788 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:01:16,788 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:01:16,788 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2024-06-28 01:01:16,788 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2024-06-28 01:01:16,789 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:01:16,789 INFO L85 PathProgramCache]: Analyzing trace with hash -932270679, now seen corresponding path program 1 times [2024-06-28 01:01:16,789 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:01:16,789 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [478462930] [2024-06-28 01:01:16,789 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:01:16,790 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:01:16,796 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:01:16,855 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:01:16,855 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:01:16,855 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [478462930] [2024-06-28 01:01:16,855 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [478462930] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:01:16,856 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:01:16,856 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-06-28 01:01:16,856 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1243635539] [2024-06-28 01:01:16,856 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:01:16,856 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-06-28 01:01:16,857 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:01:16,857 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-06-28 01:01:16,857 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-06-28 01:01:16,882 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 34 [2024-06-28 01:01:16,883 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 81 places, 57 transitions, 368 flow. Second operand has 6 states, 6 states have (on average 16.0) internal successors, (96), 6 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:01:16,883 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:01:16,883 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 34 [2024-06-28 01:01:16,883 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:01:17,024 INFO L124 PetriNetUnfolderBase]: 418/1015 cut-off events. [2024-06-28 01:01:17,024 INFO L125 PetriNetUnfolderBase]: For 3298/3310 co-relation queries the response was YES. [2024-06-28 01:01:17,027 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2829 conditions, 1015 events. 418/1015 cut-off events. For 3298/3310 co-relation queries the response was YES. Maximal size of possible extension queue 105. Compared 7323 event pairs, 239 based on Foata normal form. 11/967 useless extension candidates. Maximal degree in co-relation 2794. Up to 466 conditions per place. [2024-06-28 01:01:17,031 INFO L140 encePairwiseOnDemand]: 27/34 looper letters, 45 selfloop transitions, 18 changer transitions 0/75 dead transitions. [2024-06-28 01:01:17,031 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 86 places, 75 transitions, 546 flow [2024-06-28 01:01:17,032 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-28 01:01:17,032 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-28 01:01:17,032 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 131 transitions. [2024-06-28 01:01:17,032 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6421568627450981 [2024-06-28 01:01:17,033 INFO L175 Difference]: Start difference. First operand has 81 places, 57 transitions, 368 flow. Second operand 6 states and 131 transitions. [2024-06-28 01:01:17,033 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 86 places, 75 transitions, 546 flow [2024-06-28 01:01:17,041 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 82 places, 75 transitions, 514 flow, removed 0 selfloop flow, removed 4 redundant places. [2024-06-28 01:01:17,042 INFO L231 Difference]: Finished difference. Result has 83 places, 57 transitions, 375 flow [2024-06-28 01:01:17,042 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=34, PETRI_DIFFERENCE_MINUEND_FLOW=336, PETRI_DIFFERENCE_MINUEND_PLACES=77, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=57, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=18, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=39, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=375, PETRI_PLACES=83, PETRI_TRANSITIONS=57} [2024-06-28 01:01:17,042 INFO L281 CegarLoopForPetriNet]: 36 programPoint places, 47 predicate places. [2024-06-28 01:01:17,043 INFO L495 AbstractCegarLoop]: Abstraction has has 83 places, 57 transitions, 375 flow [2024-06-28 01:01:17,043 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 16.0) internal successors, (96), 6 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:01:17,043 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:01:17,043 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:01:17,043 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2024-06-28 01:01:17,044 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2024-06-28 01:01:17,044 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:01:17,044 INFO L85 PathProgramCache]: Analyzing trace with hash -796340951, now seen corresponding path program 2 times [2024-06-28 01:01:17,044 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:01:17,044 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [352624729] [2024-06-28 01:01:17,045 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:01:17,045 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:01:17,050 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:01:17,102 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:01:17,102 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:01:17,102 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [352624729] [2024-06-28 01:01:17,102 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [352624729] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:01:17,102 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:01:17,103 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-06-28 01:01:17,103 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [459532232] [2024-06-28 01:01:17,103 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:01:17,103 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-06-28 01:01:17,103 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:01:17,104 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-06-28 01:01:17,104 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-06-28 01:01:17,130 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 34 [2024-06-28 01:01:17,130 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 83 places, 57 transitions, 375 flow. Second operand has 6 states, 6 states have (on average 16.0) internal successors, (96), 6 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:01:17,130 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:01:17,130 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 34 [2024-06-28 01:01:17,130 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:01:17,270 INFO L124 PetriNetUnfolderBase]: 441/1072 cut-off events. [2024-06-28 01:01:17,270 INFO L125 PetriNetUnfolderBase]: For 3600/3605 co-relation queries the response was YES. [2024-06-28 01:01:17,273 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2989 conditions, 1072 events. 441/1072 cut-off events. For 3600/3605 co-relation queries the response was YES. Maximal size of possible extension queue 113. Compared 7900 event pairs, 185 based on Foata normal form. 7/1024 useless extension candidates. Maximal degree in co-relation 2953. Up to 618 conditions per place. [2024-06-28 01:01:17,276 INFO L140 encePairwiseOnDemand]: 27/34 looper letters, 45 selfloop transitions, 21 changer transitions 0/78 dead transitions. [2024-06-28 01:01:17,277 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 88 places, 78 transitions, 567 flow [2024-06-28 01:01:17,277 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-28 01:01:17,277 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-28 01:01:17,278 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 135 transitions. [2024-06-28 01:01:17,278 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6617647058823529 [2024-06-28 01:01:17,278 INFO L175 Difference]: Start difference. First operand has 83 places, 57 transitions, 375 flow. Second operand 6 states and 135 transitions. [2024-06-28 01:01:17,278 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 88 places, 78 transitions, 567 flow [2024-06-28 01:01:17,287 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 84 places, 78 transitions, 532 flow, removed 0 selfloop flow, removed 4 redundant places. [2024-06-28 01:01:17,288 INFO L231 Difference]: Finished difference. Result has 85 places, 57 transitions, 385 flow [2024-06-28 01:01:17,289 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=34, PETRI_DIFFERENCE_MINUEND_FLOW=340, PETRI_DIFFERENCE_MINUEND_PLACES=79, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=57, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=21, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=36, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=385, PETRI_PLACES=85, PETRI_TRANSITIONS=57} [2024-06-28 01:01:17,289 INFO L281 CegarLoopForPetriNet]: 36 programPoint places, 49 predicate places. [2024-06-28 01:01:17,289 INFO L495 AbstractCegarLoop]: Abstraction has has 85 places, 57 transitions, 385 flow [2024-06-28 01:01:17,290 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 16.0) internal successors, (96), 6 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:01:17,290 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:01:17,290 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:01:17,290 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2024-06-28 01:01:17,290 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2024-06-28 01:01:17,290 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:01:17,291 INFO L85 PathProgramCache]: Analyzing trace with hash -787144181, now seen corresponding path program 3 times [2024-06-28 01:01:17,291 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:01:17,291 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [233227989] [2024-06-28 01:01:17,291 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:01:17,291 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:01:17,296 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:01:17,347 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:01:17,348 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:01:17,348 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [233227989] [2024-06-28 01:01:17,348 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [233227989] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:01:17,348 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:01:17,348 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-06-28 01:01:17,349 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [780879509] [2024-06-28 01:01:17,349 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:01:17,349 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-06-28 01:01:17,349 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:01:17,350 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-06-28 01:01:17,350 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2024-06-28 01:01:17,388 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 34 [2024-06-28 01:01:17,389 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 85 places, 57 transitions, 385 flow. Second operand has 6 states, 6 states have (on average 16.0) internal successors, (96), 6 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:01:17,389 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:01:17,389 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 34 [2024-06-28 01:01:17,389 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:01:17,530 INFO L124 PetriNetUnfolderBase]: 434/1062 cut-off events. [2024-06-28 01:01:17,530 INFO L125 PetriNetUnfolderBase]: For 2449/2461 co-relation queries the response was YES. [2024-06-28 01:01:17,533 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2874 conditions, 1062 events. 434/1062 cut-off events. For 2449/2461 co-relation queries the response was YES. Maximal size of possible extension queue 111. Compared 7854 event pairs, 264 based on Foata normal form. 8/1009 useless extension candidates. Maximal degree in co-relation 2837. Up to 752 conditions per place. [2024-06-28 01:01:17,538 INFO L140 encePairwiseOnDemand]: 28/34 looper letters, 45 selfloop transitions, 13 changer transitions 0/70 dead transitions. [2024-06-28 01:01:17,538 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 89 places, 70 transitions, 495 flow [2024-06-28 01:01:17,539 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-28 01:01:17,539 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-28 01:01:17,540 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 122 transitions. [2024-06-28 01:01:17,541 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5980392156862745 [2024-06-28 01:01:17,541 INFO L175 Difference]: Start difference. First operand has 85 places, 57 transitions, 385 flow. Second operand 6 states and 122 transitions. [2024-06-28 01:01:17,541 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 89 places, 70 transitions, 495 flow [2024-06-28 01:01:17,544 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 63 places, 70 transitions, 390 flow, removed 0 selfloop flow, removed 26 redundant places. [2024-06-28 01:01:17,546 INFO L231 Difference]: Finished difference. Result has 63 places, 56 transitions, 260 flow [2024-06-28 01:01:17,546 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=34, PETRI_DIFFERENCE_MINUEND_FLOW=234, PETRI_DIFFERENCE_MINUEND_PLACES=58, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=56, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=13, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=43, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=260, PETRI_PLACES=63, PETRI_TRANSITIONS=56} [2024-06-28 01:01:17,547 INFO L281 CegarLoopForPetriNet]: 36 programPoint places, 27 predicate places. [2024-06-28 01:01:17,547 INFO L495 AbstractCegarLoop]: Abstraction has has 63 places, 56 transitions, 260 flow [2024-06-28 01:01:17,548 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 16.0) internal successors, (96), 6 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:01:17,548 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:01:17,548 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:01:17,548 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2024-06-28 01:01:17,548 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2024-06-28 01:01:17,549 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:01:17,549 INFO L85 PathProgramCache]: Analyzing trace with hash -558371123, now seen corresponding path program 1 times [2024-06-28 01:01:17,549 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:01:17,549 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [425109624] [2024-06-28 01:01:17,549 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:01:17,550 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:01:17,561 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:01:17,626 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:01:17,627 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:01:17,627 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [425109624] [2024-06-28 01:01:17,627 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [425109624] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:01:17,627 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:01:17,627 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-06-28 01:01:17,627 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1920635433] [2024-06-28 01:01:17,627 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:01:17,628 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-06-28 01:01:17,628 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:01:17,628 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-06-28 01:01:17,628 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-06-28 01:01:17,646 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 19 out of 34 [2024-06-28 01:01:17,646 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 63 places, 56 transitions, 260 flow. Second operand has 5 states, 5 states have (on average 21.0) internal successors, (105), 5 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:01:17,646 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:01:17,646 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 19 of 34 [2024-06-28 01:01:17,647 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:01:17,739 INFO L124 PetriNetUnfolderBase]: 322/955 cut-off events. [2024-06-28 01:01:17,739 INFO L125 PetriNetUnfolderBase]: For 531/571 co-relation queries the response was YES. [2024-06-28 01:01:17,741 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2225 conditions, 955 events. 322/955 cut-off events. For 531/571 co-relation queries the response was YES. Maximal size of possible extension queue 92. Compared 6883 event pairs, 14 based on Foata normal form. 69/970 useless extension candidates. Maximal degree in co-relation 2210. Up to 312 conditions per place. [2024-06-28 01:01:17,743 INFO L140 encePairwiseOnDemand]: 29/34 looper letters, 19 selfloop transitions, 14 changer transitions 1/66 dead transitions. [2024-06-28 01:01:17,743 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 67 places, 66 transitions, 352 flow [2024-06-28 01:01:17,743 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-06-28 01:01:17,743 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-06-28 01:01:17,744 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 123 transitions. [2024-06-28 01:01:17,744 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.7235294117647059 [2024-06-28 01:01:17,744 INFO L175 Difference]: Start difference. First operand has 63 places, 56 transitions, 260 flow. Second operand 5 states and 123 transitions. [2024-06-28 01:01:17,744 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 67 places, 66 transitions, 352 flow [2024-06-28 01:01:17,745 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 63 places, 66 transitions, 327 flow, removed 0 selfloop flow, removed 4 redundant places. [2024-06-28 01:01:17,746 INFO L231 Difference]: Finished difference. Result has 65 places, 56 transitions, 282 flow [2024-06-28 01:01:17,746 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=34, PETRI_DIFFERENCE_MINUEND_FLOW=235, PETRI_DIFFERENCE_MINUEND_PLACES=59, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=56, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=42, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=282, PETRI_PLACES=65, PETRI_TRANSITIONS=56} [2024-06-28 01:01:17,747 INFO L281 CegarLoopForPetriNet]: 36 programPoint places, 29 predicate places. [2024-06-28 01:01:17,747 INFO L495 AbstractCegarLoop]: Abstraction has has 65 places, 56 transitions, 282 flow [2024-06-28 01:01:17,747 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 21.0) internal successors, (105), 5 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:01:17,747 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:01:17,747 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:01:17,748 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2024-06-28 01:01:17,748 INFO L420 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2024-06-28 01:01:17,748 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:01:17,748 INFO L85 PathProgramCache]: Analyzing trace with hash -2054953189, now seen corresponding path program 1 times [2024-06-28 01:01:17,748 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:01:17,748 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1819272074] [2024-06-28 01:01:17,748 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:01:17,749 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:01:17,766 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:01:17,841 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:01:17,842 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:01:17,842 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1819272074] [2024-06-28 01:01:17,842 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1819272074] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:01:17,842 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:01:17,842 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-28 01:01:17,842 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1984427712] [2024-06-28 01:01:17,842 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:01:17,843 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-06-28 01:01:17,843 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:01:17,844 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-06-28 01:01:17,844 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-06-28 01:01:17,863 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 18 out of 34 [2024-06-28 01:01:17,863 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 65 places, 56 transitions, 282 flow. Second operand has 5 states, 5 states have (on average 20.4) internal successors, (102), 5 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:01:17,863 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:01:17,863 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 18 of 34 [2024-06-28 01:01:17,864 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:01:17,956 INFO L124 PetriNetUnfolderBase]: 243/738 cut-off events. [2024-06-28 01:01:17,957 INFO L125 PetriNetUnfolderBase]: For 517/519 co-relation queries the response was YES. [2024-06-28 01:01:17,959 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1886 conditions, 738 events. 243/738 cut-off events. For 517/519 co-relation queries the response was YES. Maximal size of possible extension queue 72. Compared 5076 event pairs, 103 based on Foata normal form. 28/683 useless extension candidates. Maximal degree in co-relation 1869. Up to 212 conditions per place. [2024-06-28 01:01:17,959 INFO L140 encePairwiseOnDemand]: 29/34 looper letters, 14 selfloop transitions, 3 changer transitions 29/66 dead transitions. [2024-06-28 01:01:17,960 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 69 places, 66 transitions, 376 flow [2024-06-28 01:01:17,960 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-06-28 01:01:17,960 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-06-28 01:01:17,960 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 116 transitions. [2024-06-28 01:01:17,961 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6823529411764706 [2024-06-28 01:01:17,961 INFO L175 Difference]: Start difference. First operand has 65 places, 56 transitions, 282 flow. Second operand 5 states and 116 transitions. [2024-06-28 01:01:17,961 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 69 places, 66 transitions, 376 flow [2024-06-28 01:01:17,964 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 63 places, 66 transitions, 314 flow, removed 6 selfloop flow, removed 6 redundant places. [2024-06-28 01:01:17,965 INFO L231 Difference]: Finished difference. Result has 66 places, 35 transitions, 137 flow [2024-06-28 01:01:17,965 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=34, PETRI_DIFFERENCE_MINUEND_FLOW=224, PETRI_DIFFERENCE_MINUEND_PLACES=59, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=56, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=53, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=137, PETRI_PLACES=66, PETRI_TRANSITIONS=35} [2024-06-28 01:01:17,965 INFO L281 CegarLoopForPetriNet]: 36 programPoint places, 30 predicate places. [2024-06-28 01:01:17,966 INFO L495 AbstractCegarLoop]: Abstraction has has 66 places, 35 transitions, 137 flow [2024-06-28 01:01:17,966 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 20.4) internal successors, (102), 5 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:01:17,966 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:01:17,966 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:01:17,966 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2024-06-28 01:01:17,966 INFO L420 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2024-06-28 01:01:17,966 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:01:17,967 INFO L85 PathProgramCache]: Analyzing trace with hash -1753998635, now seen corresponding path program 2 times [2024-06-28 01:01:17,967 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:01:17,968 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1843455569] [2024-06-28 01:01:17,968 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:01:17,968 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:01:17,994 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:01:18,099 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:01:18,100 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:01:18,100 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1843455569] [2024-06-28 01:01:18,100 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1843455569] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:01:18,100 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:01:18,100 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-28 01:01:18,101 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1627813638] [2024-06-28 01:01:18,101 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:01:18,101 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-06-28 01:01:18,102 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:01:18,103 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-06-28 01:01:18,103 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-06-28 01:01:18,120 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 16 out of 34 [2024-06-28 01:01:18,121 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 66 places, 35 transitions, 137 flow. Second operand has 5 states, 5 states have (on average 18.8) internal successors, (94), 5 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:01:18,121 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:01:18,121 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 16 of 34 [2024-06-28 01:01:18,121 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:01:18,179 INFO L124 PetriNetUnfolderBase]: 77/228 cut-off events. [2024-06-28 01:01:18,179 INFO L125 PetriNetUnfolderBase]: For 70/70 co-relation queries the response was YES. [2024-06-28 01:01:18,180 INFO L83 FinitePrefix]: Finished finitePrefix Result has 559 conditions, 228 events. 77/228 cut-off events. For 70/70 co-relation queries the response was YES. Maximal size of possible extension queue 22. Compared 1028 event pairs, 39 based on Foata normal form. 12/219 useless extension candidates. Maximal degree in co-relation 551. Up to 103 conditions per place. [2024-06-28 01:01:18,180 INFO L140 encePairwiseOnDemand]: 26/34 looper letters, 0 selfloop transitions, 0 changer transitions 39/39 dead transitions. [2024-06-28 01:01:18,180 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 54 places, 39 transitions, 191 flow [2024-06-28 01:01:18,180 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-06-28 01:01:18,181 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-06-28 01:01:18,181 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 102 transitions. [2024-06-28 01:01:18,181 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6 [2024-06-28 01:01:18,181 INFO L175 Difference]: Start difference. First operand has 66 places, 35 transitions, 137 flow. Second operand 5 states and 102 transitions. [2024-06-28 01:01:18,181 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 54 places, 39 transitions, 191 flow [2024-06-28 01:01:18,182 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 47 places, 39 transitions, 169 flow, removed 2 selfloop flow, removed 7 redundant places. [2024-06-28 01:01:18,182 INFO L231 Difference]: Finished difference. Result has 47 places, 0 transitions, 0 flow [2024-06-28 01:01:18,183 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=34, PETRI_DIFFERENCE_MINUEND_FLOW=109, PETRI_DIFFERENCE_MINUEND_PLACES=43, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=33, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=33, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=0, PETRI_PLACES=47, PETRI_TRANSITIONS=0} [2024-06-28 01:01:18,183 INFO L281 CegarLoopForPetriNet]: 36 programPoint places, 11 predicate places. [2024-06-28 01:01:18,183 INFO L495 AbstractCegarLoop]: Abstraction has has 47 places, 0 transitions, 0 flow [2024-06-28 01:01:18,183 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 18.8) internal successors, (94), 5 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:01:18,186 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT (4 of 5 remaining) [2024-06-28 01:01:18,188 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (3 of 5 remaining) [2024-06-28 01:01:18,188 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (2 of 5 remaining) [2024-06-28 01:01:18,190 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 5 remaining) [2024-06-28 01:01:18,191 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 5 remaining) [2024-06-28 01:01:18,191 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2024-06-28 01:01:18,191 INFO L445 BasicCegarLoop]: Path program histogram: [5, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:01:18,194 INFO L229 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2024-06-28 01:01:18,194 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2024-06-28 01:01:18,197 INFO L507 ceAbstractionStarter]: Automizer considered 2 witness invariants [2024-06-28 01:01:18,198 INFO L508 ceAbstractionStarter]: WitnessConsidered=2 [2024-06-28 01:01:18,198 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 28.06 01:01:18 BasicIcfg [2024-06-28 01:01:18,198 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2024-06-28 01:01:18,199 INFO L158 Benchmark]: Toolchain (without parser) took 7876.16ms. Allocated memory was 184.5MB in the beginning and 297.8MB in the end (delta: 113.2MB). Free memory was 112.6MB in the beginning and 250.1MB in the end (delta: -137.5MB). There was no memory consumed. Max. memory is 16.1GB. [2024-06-28 01:01:18,199 INFO L158 Benchmark]: Witness Parser took 0.09ms. Allocated memory is still 107.0MB. Free memory is still 69.5MB. There was no memory consumed. Max. memory is 16.1GB. [2024-06-28 01:01:18,199 INFO L158 Benchmark]: CDTParser took 0.17ms. Allocated memory is still 184.5MB. Free memory is still 159.5MB. There was no memory consumed. Max. memory is 16.1GB. [2024-06-28 01:01:18,200 INFO L158 Benchmark]: CACSL2BoogieTranslator took 649.90ms. Allocated memory is still 184.5MB. Free memory was 112.4MB in the beginning and 148.4MB in the end (delta: -36.0MB). Peak memory consumption was 23.8MB. Max. memory is 16.1GB. [2024-06-28 01:01:18,200 INFO L158 Benchmark]: Boogie Procedure Inliner took 34.47ms. Allocated memory is still 184.5MB. Free memory was 148.4MB in the beginning and 146.4MB in the end (delta: 2.0MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2024-06-28 01:01:18,200 INFO L158 Benchmark]: Boogie Preprocessor took 33.59ms. Allocated memory is still 184.5MB. Free memory was 146.4MB in the beginning and 144.3MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2024-06-28 01:01:18,201 INFO L158 Benchmark]: RCFGBuilder took 373.16ms. Allocated memory is still 184.5MB. Free memory was 144.3MB in the beginning and 125.4MB in the end (delta: 18.9MB). Peak memory consumption was 18.9MB. Max. memory is 16.1GB. [2024-06-28 01:01:18,201 INFO L158 Benchmark]: TraceAbstraction took 6778.44ms. Allocated memory was 184.5MB in the beginning and 297.8MB in the end (delta: 113.2MB). Free memory was 124.7MB in the beginning and 250.1MB in the end (delta: -125.4MB). There was no memory consumed. Max. memory is 16.1GB. [2024-06-28 01:01:18,202 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 0.09ms. Allocated memory is still 107.0MB. Free memory is still 69.5MB. There was no memory consumed. Max. memory is 16.1GB. * CDTParser took 0.17ms. Allocated memory is still 184.5MB. Free memory is still 159.5MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 649.90ms. Allocated memory is still 184.5MB. Free memory was 112.4MB in the beginning and 148.4MB in the end (delta: -36.0MB). Peak memory consumption was 23.8MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 34.47ms. Allocated memory is still 184.5MB. Free memory was 148.4MB in the beginning and 146.4MB in the end (delta: 2.0MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 33.59ms. Allocated memory is still 184.5MB. Free memory was 146.4MB in the beginning and 144.3MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 373.16ms. Allocated memory is still 184.5MB. Free memory was 144.3MB in the beginning and 125.4MB in the end (delta: 18.9MB). Peak memory consumption was 18.9MB. Max. memory is 16.1GB. * TraceAbstraction took 6778.44ms. Allocated memory was 184.5MB in the beginning and 297.8MB in the end (delta: 113.2MB). Free memory was 124.7MB in the beginning and 250.1MB in the end (delta: -125.4MB). There was no memory consumed. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 759]: invariant of correctness witness holds For all program executions holds that invariant of correctness witness holds at this location - PositiveResult [Line: 760]: invariant of correctness witness holds For all program executions holds that invariant of correctness witness holds at this location - PositiveResult [Line: 18]: a call to reach_error is unreachable For all program executions holds that a call to reach_error is unreachable at this location - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 5 procedures, 50 locations, 5 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: 6.7s, OverallIterations: 27, TraceHistogramMax: 1, PathProgramHistogramMax: 5, EmptinessCheckTime: 0.0s, AutomataDifference: 4.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.1s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 1107 SdHoareTripleChecker+Valid, 1.8s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 788 mSDsluCounter, 417 SdHoareTripleChecker+Invalid, 1.4s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 273 mSDsCounter, 98 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 2903 IncrementalHoareTripleChecker+Invalid, 3001 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 98 mSolverCounterUnsat, 144 mSDtfsCounter, 2903 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 103 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 97 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 26 ImplicationChecksByTransitivity, 0.5s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=385occurred in iteration=23, InterpolantAutomatonStates: 144, 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, 1.9s InterpolantComputationTime, 389 NumberOfCodeBlocks, 389 NumberOfCodeBlocksAsserted, 27 NumberOfCheckSat, 362 ConstructedInterpolants, 0 QuantifiedInterpolants, 1631 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 27 InterpolantComputations, 27 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 3 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2024-06-28 01:01:18,232 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Ended with exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: TRUE