./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/protection/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/protection/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 [2024-06-27 17:56:37,912 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-06-27 17:56:38,008 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-06-27 17:56:38,014 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-06-27 17:56:38,015 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-06-27 17:56:38,053 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-06-27 17:56:38,055 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-06-27 17:56:38,055 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-06-27 17:56:38,056 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-06-27 17:56:38,059 INFO L153 SettingsManager]: * Use memory slicer=true [2024-06-27 17:56:38,060 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-06-27 17:56:38,060 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-06-27 17:56:38,060 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-06-27 17:56:38,062 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-06-27 17:56:38,062 INFO L153 SettingsManager]: * Use SBE=true [2024-06-27 17:56:38,062 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-06-27 17:56:38,062 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-06-27 17:56:38,063 INFO L153 SettingsManager]: * sizeof long=4 [2024-06-27 17:56:38,063 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-06-27 17:56:38,063 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-06-27 17:56:38,063 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-06-27 17:56:38,064 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-06-27 17:56:38,064 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-06-27 17:56:38,064 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-06-27 17:56:38,065 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-06-27 17:56:38,065 INFO L153 SettingsManager]: * sizeof long double=12 [2024-06-27 17:56:38,065 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-06-27 17:56:38,065 INFO L153 SettingsManager]: * Use constant arrays=true [2024-06-27 17:56:38,066 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-06-27 17:56:38,066 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-06-27 17:56:38,067 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-06-27 17:56:38,067 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-06-27 17:56:38,067 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-06-27 17:56:38,068 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-06-27 17:56:38,068 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-06-27 17:56:38,068 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-06-27 17:56:38,068 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-06-27 17:56:38,068 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-06-27 17:56:38,069 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-06-27 17:56:38,069 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-06-27 17:56:38,069 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2024-06-27 17:56:38,069 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-06-27 17:56:38,070 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-06-27 17:56:38,070 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessparser: Only consider loop invariants -> false [2024-06-27 17:56:38,292 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-06-27 17:56:38,312 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-06-27 17:56:38,314 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-06-27 17:56:38,315 INFO L270 PluginConnector]: Initializing Witness Parser... [2024-06-27 17:56:38,316 INFO L274 PluginConnector]: Witness Parser initialized [2024-06-27 17:56:38,317 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/./goblint.2024-06-19_11-23-25.files/protection/safe029_tso.yml/witness.yml [2024-06-27 17:56:38,405 INFO L270 PluginConnector]: Initializing CDTParser... [2024-06-27 17:56:38,414 INFO L274 PluginConnector]: CDTParser initialized [2024-06-27 17:56:38,414 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-wmm/safe029_tso.i [2024-06-27 17:56:39,594 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-06-27 17:56:39,839 INFO L384 CDTParser]: Found 1 translation units. [2024-06-27 17:56:39,840 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/safe029_tso.i [2024-06-27 17:56:39,860 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/1736409d3/6de0bd8809194beab3fc1d10be83366f/FLAG73cee12d3 [2024-06-27 17:56:39,872 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/1736409d3/6de0bd8809194beab3fc1d10be83366f [2024-06-27 17:56:39,873 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-06-27 17:56:39,874 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2024-06-27 17:56:39,875 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-06-27 17:56:39,875 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-06-27 17:56:39,882 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-06-27 17:56:39,883 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 27.06 05:56:38" (1/2) ... [2024-06-27 17:56:39,883 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@585a9620 and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 27.06 05:56:39, skipping insertion in model container [2024-06-27 17:56:39,884 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 27.06 05:56:38" (1/2) ... [2024-06-27 17:56:39,885 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@68ee25e1 and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 27.06 05:56:39, skipping insertion in model container [2024-06-27 17:56:39,885 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.06 05:56:39" (2/2) ... [2024-06-27 17:56:39,886 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@585a9620 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 05:56:39, skipping insertion in model container [2024-06-27 17:56:39,886 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.06 05:56:39" (2/2) ... [2024-06-27 17:56:39,886 INFO L83 nessWitnessExtractor]: Extracting all invariants from correctness witness [2024-06-27 17:56:39,918 INFO L95 edCorrectnessWitness]: Found the following entries in the witness: [2024-06-27 17:56:39,920 INFO L97 edCorrectnessWitness]: Location invariant before [L759-L759] ((! multithreaded || ((y == 0 || y == 1) || y == 2)) && (! multithreaded || ((x == 0 || x == 1) || x == 2))) && (! multithreaded || 0 <= __unbuffered_cnt) [2024-06-27 17:56:39,920 INFO L97 edCorrectnessWitness]: Location invariant before [L760-L760] ((! multithreaded || ((y == 0 || y == 1) || y == 2)) && (! multithreaded || ((x == 0 || x == 1) || x == 2))) && (! multithreaded || 0 <= __unbuffered_cnt) [2024-06-27 17:56:39,920 INFO L103 edCorrectnessWitness]: ghost_variable multithreaded = 0 [2024-06-27 17:56:39,921 INFO L106 edCorrectnessWitness]: ghost_update [L757-L757] multithreaded = 1; [2024-06-27 17:56:39,954 INFO L177 MainTranslator]: Built tables and reachable declarations [2024-06-27 17:56:40,131 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] [2024-06-27 17:56:40,324 INFO L207 PostProcessor]: Analyzing one entry point: main [2024-06-27 17:56:40,331 INFO L202 MainTranslator]: Completed pre-run Start Parsing Local [2024-06-27 17:56:40,371 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 [2024-06-27 17:56:40,414 INFO L207 PostProcessor]: Analyzing one entry point: main [2024-06-27 17:56:40,450 INFO L206 MainTranslator]: Completed translation [2024-06-27 17:56:40,451 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 05:56:40 WrapperNode [2024-06-27 17:56:40,451 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-06-27 17:56:40,453 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-06-27 17:56:40,453 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-06-27 17:56:40,453 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-06-27 17:56:40,459 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 05:56:40" (1/1) ... [2024-06-27 17:56:40,470 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 05:56:40" (1/1) ... [2024-06-27 17:56:40,493 INFO L138 Inliner]: procedures = 174, calls = 32, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 53 [2024-06-27 17:56:40,494 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-06-27 17:56:40,494 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-06-27 17:56:40,494 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-06-27 17:56:40,495 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-06-27 17:56:40,505 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 05:56:40" (1/1) ... [2024-06-27 17:56:40,505 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 05:56:40" (1/1) ... [2024-06-27 17:56:40,507 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 05:56:40" (1/1) ... [2024-06-27 17:56:40,522 INFO L175 MemorySlicer]: Split 2 memory accesses to 1 slices as follows [2]. 100 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2]. The 0 writes are split as follows [0]. [2024-06-27 17:56:40,522 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 05:56:40" (1/1) ... [2024-06-27 17:56:40,522 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 05:56:40" (1/1) ... [2024-06-27 17:56:40,528 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 05:56:40" (1/1) ... [2024-06-27 17:56:40,537 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 05:56:40" (1/1) ... [2024-06-27 17:56:40,539 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 05:56:40" (1/1) ... [2024-06-27 17:56:40,540 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 05:56:40" (1/1) ... [2024-06-27 17:56:40,542 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-06-27 17:56:40,542 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-06-27 17:56:40,543 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-06-27 17:56:40,543 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-06-27 17:56:40,544 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 05:56:40" (1/1) ... [2024-06-27 17:56:40,549 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-06-27 17:56:40,556 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-06-27 17:56:40,570 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-06-27 17:56:40,580 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-06-27 17:56:40,609 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2024-06-27 17:56:40,610 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-06-27 17:56:40,610 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2024-06-27 17:56:40,610 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2024-06-27 17:56:40,610 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2024-06-27 17:56:40,610 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2024-06-27 17:56:40,611 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-06-27 17:56:40,611 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2024-06-27 17:56:40,611 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-06-27 17:56:40,611 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-06-27 17:56:40,616 WARN L214 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2024-06-27 17:56:40,723 INFO L244 CfgBuilder]: Building ICFG [2024-06-27 17:56:40,725 INFO L270 CfgBuilder]: Building CFG for each procedure with an implementation [2024-06-27 17:56:40,906 INFO L289 CfgBuilder]: Ommited future-live optimization because the input is a concurrent program. [2024-06-27 17:56:40,906 INFO L293 CfgBuilder]: Performing block encoding [2024-06-27 17:56:41,006 INFO L315 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-06-27 17:56:41,006 INFO L320 CfgBuilder]: Removed 0 assume(true) statements. [2024-06-27 17:56:41,006 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.06 05:56:41 BoogieIcfgContainer [2024-06-27 17:56:41,006 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-06-27 17:56:41,008 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-06-27 17:56:41,008 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-06-27 17:56:41,011 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-06-27 17:56:41,011 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 27.06 05:56:38" (1/4) ... [2024-06-27 17:56:41,012 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@417fc766 and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CORRECTNESS_WITNESS 27.06 05:56:41, skipping insertion in model container [2024-06-27 17:56:41,012 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 27.06 05:56:39" (2/4) ... [2024-06-27 17:56:41,012 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@417fc766 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.06 05:56:41, skipping insertion in model container [2024-06-27 17:56:41,012 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 05:56:40" (3/4) ... [2024-06-27 17:56:41,013 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@417fc766 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.06 05:56:41, skipping insertion in model container [2024-06-27 17:56:41,013 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.06 05:56:41" (4/4) ... [2024-06-27 17:56:41,014 INFO L112 eAbstractionObserver]: Analyzing ICFG safe029_tso.i [2024-06-27 17:56:41,037 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-06-27 17:56:41,037 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 3 error locations. [2024-06-27 17:56:41,038 INFO L522 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-06-27 17:56:41,093 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2024-06-27 17:56:41,133 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 40 places, 34 transitions, 76 flow [2024-06-27 17:56:41,171 INFO L124 PetriNetUnfolderBase]: 1/32 cut-off events. [2024-06-27 17:56:41,171 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-06-27 17:56:41,175 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. [2024-06-27 17:56:41,175 INFO L82 GeneralOperation]: Start removeDead. Operand has 40 places, 34 transitions, 76 flow [2024-06-27 17:56:41,179 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 36 places, 29 transitions, 64 flow [2024-06-27 17:56:41,194 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-06-27 17:56:41,202 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;@587cba96, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-06-27 17:56:41,202 INFO L358 AbstractCegarLoop]: Starting to check reachability of 5 error locations. [2024-06-27 17:56:41,209 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-06-27 17:56:41,209 INFO L124 PetriNetUnfolderBase]: 0/5 cut-off events. [2024-06-27 17:56:41,209 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-06-27 17:56:41,209 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 17:56:41,210 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2024-06-27 17:56:41,210 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)] === [2024-06-27 17:56:41,215 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 17:56:41,215 INFO L85 PathProgramCache]: Analyzing trace with hash 176439726, now seen corresponding path program 1 times [2024-06-27 17:56:41,224 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 17:56:41,225 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1144241840] [2024-06-27 17:56:41,225 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 17:56:41,225 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 17:56:41,334 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 17:56:41,547 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 17:56:41,548 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 17:56:41,548 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1144241840] [2024-06-27 17:56:41,549 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1144241840] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 17:56:41,549 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 17:56:41,549 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-06-27 17:56:41,552 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1978428051] [2024-06-27 17:56:41,552 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 17:56:41,560 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-06-27 17:56:41,565 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 17:56:41,590 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-06-27 17:56:41,590 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-06-27 17:56:41,620 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 34 [2024-06-27 17:56:41,624 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) [2024-06-27 17:56:41,624 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 17:56:41,624 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 34 [2024-06-27 17:56:41,625 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 17:56:41,739 INFO L124 PetriNetUnfolderBase]: 189/369 cut-off events. [2024-06-27 17:56:41,739 INFO L125 PetriNetUnfolderBase]: For 5/5 co-relation queries the response was YES. [2024-06-27 17:56:41,741 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. [2024-06-27 17:56:41,744 INFO L140 encePairwiseOnDemand]: 29/34 looper letters, 23 selfloop transitions, 3 changer transitions 0/37 dead transitions. [2024-06-27 17:56:41,744 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 38 places, 37 transitions, 135 flow [2024-06-27 17:56:41,750 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-06-27 17:56:41,752 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-06-27 17:56:41,757 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 70 transitions. [2024-06-27 17:56:41,758 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6862745098039216 [2024-06-27 17:56:41,760 INFO L175 Difference]: Start difference. First operand has 36 places, 29 transitions, 64 flow. Second operand 3 states and 70 transitions. [2024-06-27 17:56:41,760 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 38 places, 37 transitions, 135 flow [2024-06-27 17:56:41,762 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 36 places, 37 transitions, 132 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-06-27 17:56:41,764 INFO L231 Difference]: Finished difference. Result has 37 places, 31 transitions, 83 flow [2024-06-27 17:56:41,765 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} [2024-06-27 17:56:41,768 INFO L281 CegarLoopForPetriNet]: 36 programPoint places, 1 predicate places. [2024-06-27 17:56:41,769 INFO L495 AbstractCegarLoop]: Abstraction has has 37 places, 31 transitions, 83 flow [2024-06-27 17:56:41,769 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) [2024-06-27 17:56:41,769 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 17:56:41,769 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2024-06-27 17:56:41,770 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-06-27 17:56:41,770 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)] === [2024-06-27 17:56:41,770 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 17:56:41,771 INFO L85 PathProgramCache]: Analyzing trace with hash 2054885965, now seen corresponding path program 1 times [2024-06-27 17:56:41,771 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 17:56:41,771 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [303689740] [2024-06-27 17:56:41,771 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 17:56:41,771 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 17:56:41,782 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 17:56:41,852 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 17:56:41,852 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 17:56:41,853 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [303689740] [2024-06-27 17:56:41,853 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [303689740] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 17:56:41,853 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 17:56:41,853 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-06-27 17:56:41,853 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1969524729] [2024-06-27 17:56:41,854 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 17:56:41,855 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-06-27 17:56:41,855 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 17:56:41,855 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-06-27 17:56:41,856 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-06-27 17:56:41,880 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 34 [2024-06-27 17:56:41,880 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) [2024-06-27 17:56:41,880 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 17:56:41,881 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 34 [2024-06-27 17:56:41,881 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 17:56:41,961 INFO L124 PetriNetUnfolderBase]: 186/364 cut-off events. [2024-06-27 17:56:41,961 INFO L125 PetriNetUnfolderBase]: For 57/57 co-relation queries the response was YES. [2024-06-27 17:56:41,962 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. [2024-06-27 17:56:41,965 INFO L140 encePairwiseOnDemand]: 28/34 looper letters, 29 selfloop transitions, 5 changer transitions 0/45 dead transitions. [2024-06-27 17:56:41,965 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 40 places, 45 transitions, 185 flow [2024-06-27 17:56:41,965 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-06-27 17:56:41,966 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-06-27 17:56:41,966 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 92 transitions. [2024-06-27 17:56:41,967 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6764705882352942 [2024-06-27 17:56:41,967 INFO L175 Difference]: Start difference. First operand has 37 places, 31 transitions, 83 flow. Second operand 4 states and 92 transitions. [2024-06-27 17:56:41,967 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 40 places, 45 transitions, 185 flow [2024-06-27 17:56:41,968 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 39 places, 45 transitions, 182 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-06-27 17:56:41,969 INFO L231 Difference]: Finished difference. Result has 40 places, 33 transitions, 107 flow [2024-06-27 17:56:41,969 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} [2024-06-27 17:56:41,970 INFO L281 CegarLoopForPetriNet]: 36 programPoint places, 4 predicate places. [2024-06-27 17:56:41,970 INFO L495 AbstractCegarLoop]: Abstraction has has 40 places, 33 transitions, 107 flow [2024-06-27 17:56:41,971 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) [2024-06-27 17:56:41,971 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 17:56:41,971 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 17:56:41,971 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-06-27 17:56:41,971 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)] === [2024-06-27 17:56:41,972 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 17:56:41,972 INFO L85 PathProgramCache]: Analyzing trace with hash -723043407, now seen corresponding path program 1 times [2024-06-27 17:56:41,972 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 17:56:41,973 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1428623817] [2024-06-27 17:56:41,973 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 17:56:41,973 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 17:56:41,983 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 17:56:42,061 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 17:56:42,062 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 17:56:42,062 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1428623817] [2024-06-27 17:56:42,062 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1428623817] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 17:56:42,063 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 17:56:42,063 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-06-27 17:56:42,063 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [490401621] [2024-06-27 17:56:42,063 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 17:56:42,064 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-06-27 17:56:42,064 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 17:56:42,065 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-06-27 17:56:42,067 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2024-06-27 17:56:42,094 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 34 [2024-06-27 17:56:42,095 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) [2024-06-27 17:56:42,096 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 17:56:42,096 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 34 [2024-06-27 17:56:42,096 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 17:56:42,226 INFO L124 PetriNetUnfolderBase]: 208/423 cut-off events. [2024-06-27 17:56:42,227 INFO L125 PetriNetUnfolderBase]: For 172/172 co-relation queries the response was YES. [2024-06-27 17:56:42,230 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. [2024-06-27 17:56:42,235 INFO L140 encePairwiseOnDemand]: 25/34 looper letters, 41 selfloop transitions, 14 changer transitions 0/66 dead transitions. [2024-06-27 17:56:42,235 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 44 places, 66 transitions, 307 flow [2024-06-27 17:56:42,235 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-06-27 17:56:42,236 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-06-27 17:56:42,240 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 125 transitions. [2024-06-27 17:56:42,242 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.7352941176470589 [2024-06-27 17:56:42,242 INFO L175 Difference]: Start difference. First operand has 40 places, 33 transitions, 107 flow. Second operand 5 states and 125 transitions. [2024-06-27 17:56:42,242 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 44 places, 66 transitions, 307 flow [2024-06-27 17:56:42,246 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 42 places, 66 transitions, 298 flow, removed 1 selfloop flow, removed 2 redundant places. [2024-06-27 17:56:42,248 INFO L231 Difference]: Finished difference. Result has 45 places, 44 transitions, 195 flow [2024-06-27 17:56:42,248 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} [2024-06-27 17:56:42,250 INFO L281 CegarLoopForPetriNet]: 36 programPoint places, 9 predicate places. [2024-06-27 17:56:42,250 INFO L495 AbstractCegarLoop]: Abstraction has has 45 places, 44 transitions, 195 flow [2024-06-27 17:56:42,250 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) [2024-06-27 17:56:42,250 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 17:56:42,251 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 17:56:42,251 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-06-27 17:56:42,251 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)] === [2024-06-27 17:56:42,252 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 17:56:42,252 INFO L85 PathProgramCache]: Analyzing trace with hash -1640761488, now seen corresponding path program 1 times [2024-06-27 17:56:42,252 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 17:56:42,256 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2132230864] [2024-06-27 17:56:42,256 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 17:56:42,257 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 17:56:42,273 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 17:56:42,393 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 17:56:42,394 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 17:56:42,394 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2132230864] [2024-06-27 17:56:42,394 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2132230864] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 17:56:42,394 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 17:56:42,395 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-06-27 17:56:42,395 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [669873744] [2024-06-27 17:56:42,395 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 17:56:42,396 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-06-27 17:56:42,396 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 17:56:42,396 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-06-27 17:56:42,397 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2024-06-27 17:56:42,445 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 34 [2024-06-27 17:56:42,446 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) [2024-06-27 17:56:42,446 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 17:56:42,446 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 34 [2024-06-27 17:56:42,447 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 17:56:42,576 INFO L124 PetriNetUnfolderBase]: 249/516 cut-off events. [2024-06-27 17:56:42,577 INFO L125 PetriNetUnfolderBase]: For 518/518 co-relation queries the response was YES. [2024-06-27 17:56:42,578 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. [2024-06-27 17:56:42,581 INFO L140 encePairwiseOnDemand]: 25/34 looper letters, 46 selfloop transitions, 16 changer transitions 0/73 dead transitions. [2024-06-27 17:56:42,581 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 49 places, 73 transitions, 405 flow [2024-06-27 17:56:42,582 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-27 17:56:42,582 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-27 17:56:42,584 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 146 transitions. [2024-06-27 17:56:42,584 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.7156862745098039 [2024-06-27 17:56:42,584 INFO L175 Difference]: Start difference. First operand has 45 places, 44 transitions, 195 flow. Second operand 6 states and 146 transitions. [2024-06-27 17:56:42,584 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 49 places, 73 transitions, 405 flow [2024-06-27 17:56:42,590 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 49 places, 73 transitions, 401 flow, removed 2 selfloop flow, removed 0 redundant places. [2024-06-27 17:56:42,591 INFO L231 Difference]: Finished difference. Result has 50 places, 44 transitions, 229 flow [2024-06-27 17:56:42,592 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} [2024-06-27 17:56:42,593 INFO L281 CegarLoopForPetriNet]: 36 programPoint places, 14 predicate places. [2024-06-27 17:56:42,593 INFO L495 AbstractCegarLoop]: Abstraction has has 50 places, 44 transitions, 229 flow [2024-06-27 17:56:42,594 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) [2024-06-27 17:56:42,594 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 17:56:42,594 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 17:56:42,594 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-06-27 17:56:42,594 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)] === [2024-06-27 17:56:42,595 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 17:56:42,595 INFO L85 PathProgramCache]: Analyzing trace with hash 122830883, now seen corresponding path program 1 times [2024-06-27 17:56:42,595 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 17:56:42,595 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [117368494] [2024-06-27 17:56:42,596 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 17:56:42,596 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 17:56:42,618 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 17:56:42,700 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 17:56:42,702 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 17:56:42,702 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [117368494] [2024-06-27 17:56:42,703 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [117368494] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 17:56:42,703 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 17:56:42,703 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-06-27 17:56:42,703 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [341804648] [2024-06-27 17:56:42,704 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 17:56:42,704 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-06-27 17:56:42,704 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 17:56:42,706 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-06-27 17:56:42,706 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-06-27 17:56:42,727 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 34 [2024-06-27 17:56:42,727 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) [2024-06-27 17:56:42,727 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 17:56:42,728 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 34 [2024-06-27 17:56:42,728 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 17:56:42,800 INFO L124 PetriNetUnfolderBase]: 247/495 cut-off events. [2024-06-27 17:56:42,801 INFO L125 PetriNetUnfolderBase]: For 720/720 co-relation queries the response was YES. [2024-06-27 17:56:42,803 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. [2024-06-27 17:56:42,806 INFO L140 encePairwiseOnDemand]: 29/34 looper letters, 39 selfloop transitions, 5 changer transitions 0/55 dead transitions. [2024-06-27 17:56:42,807 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 53 places, 55 transitions, 355 flow [2024-06-27 17:56:42,807 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-06-27 17:56:42,807 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-06-27 17:56:42,808 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 87 transitions. [2024-06-27 17:56:42,808 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6397058823529411 [2024-06-27 17:56:42,808 INFO L175 Difference]: Start difference. First operand has 50 places, 44 transitions, 229 flow. Second operand 4 states and 87 transitions. [2024-06-27 17:56:42,808 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 53 places, 55 transitions, 355 flow [2024-06-27 17:56:42,812 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 49 places, 55 transitions, 315 flow, removed 5 selfloop flow, removed 4 redundant places. [2024-06-27 17:56:42,814 INFO L231 Difference]: Finished difference. Result has 50 places, 46 transitions, 226 flow [2024-06-27 17:56:42,814 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} [2024-06-27 17:56:42,819 INFO L281 CegarLoopForPetriNet]: 36 programPoint places, 14 predicate places. [2024-06-27 17:56:42,819 INFO L495 AbstractCegarLoop]: Abstraction has has 50 places, 46 transitions, 226 flow [2024-06-27 17:56:42,820 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) [2024-06-27 17:56:42,820 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 17:56:42,824 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 17:56:42,824 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-06-27 17:56:42,825 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)] === [2024-06-27 17:56:42,825 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 17:56:42,825 INFO L85 PathProgramCache]: Analyzing trace with hash -487929909, now seen corresponding path program 1 times [2024-06-27 17:56:42,826 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 17:56:42,826 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [792169722] [2024-06-27 17:56:42,826 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 17:56:42,826 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 17:56:42,836 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 17:56:42,931 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 17:56:42,932 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 17:56:42,932 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [792169722] [2024-06-27 17:56:42,933 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [792169722] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 17:56:42,933 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 17:56:42,933 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-06-27 17:56:42,933 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1307994996] [2024-06-27 17:56:42,933 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 17:56:42,934 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-06-27 17:56:42,934 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 17:56:42,934 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-06-27 17:56:42,934 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2024-06-27 17:56:42,959 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 34 [2024-06-27 17:56:42,960 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) [2024-06-27 17:56:42,960 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 17:56:42,960 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 34 [2024-06-27 17:56:42,960 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 17:56:43,042 INFO L124 PetriNetUnfolderBase]: 252/539 cut-off events. [2024-06-27 17:56:43,043 INFO L125 PetriNetUnfolderBase]: For 744/746 co-relation queries the response was YES. [2024-06-27 17:56:43,045 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. [2024-06-27 17:56:43,047 INFO L140 encePairwiseOnDemand]: 26/34 looper letters, 35 selfloop transitions, 17 changer transitions 0/63 dead transitions. [2024-06-27 17:56:43,047 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 54 places, 63 transitions, 396 flow [2024-06-27 17:56:43,048 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-06-27 17:56:43,048 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-06-27 17:56:43,048 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 117 transitions. [2024-06-27 17:56:43,049 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6882352941176471 [2024-06-27 17:56:43,049 INFO L175 Difference]: Start difference. First operand has 50 places, 46 transitions, 226 flow. Second operand 5 states and 117 transitions. [2024-06-27 17:56:43,049 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 54 places, 63 transitions, 396 flow [2024-06-27 17:56:43,052 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 52 places, 63 transitions, 381 flow, removed 4 selfloop flow, removed 2 redundant places. [2024-06-27 17:56:43,053 INFO L231 Difference]: Finished difference. Result has 53 places, 49 transitions, 271 flow [2024-06-27 17:56:43,053 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} [2024-06-27 17:56:43,056 INFO L281 CegarLoopForPetriNet]: 36 programPoint places, 17 predicate places. [2024-06-27 17:56:43,056 INFO L495 AbstractCegarLoop]: Abstraction has has 53 places, 49 transitions, 271 flow [2024-06-27 17:56:43,056 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) [2024-06-27 17:56:43,057 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 17:56:43,057 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 17:56:43,057 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-06-27 17:56:43,057 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)] === [2024-06-27 17:56:43,058 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 17:56:43,058 INFO L85 PathProgramCache]: Analyzing trace with hash 1059486432, now seen corresponding path program 1 times [2024-06-27 17:56:43,058 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 17:56:43,062 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1499367436] [2024-06-27 17:56:43,062 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 17:56:43,062 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 17:56:43,078 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 17:56:43,161 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 17:56:43,161 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 17:56:43,161 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1499367436] [2024-06-27 17:56:43,161 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1499367436] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 17:56:43,161 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 17:56:43,161 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-06-27 17:56:43,161 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1266587247] [2024-06-27 17:56:43,162 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 17:56:43,162 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-06-27 17:56:43,162 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 17:56:43,162 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-06-27 17:56:43,163 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2024-06-27 17:56:43,187 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 34 [2024-06-27 17:56:43,188 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) [2024-06-27 17:56:43,188 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 17:56:43,188 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 34 [2024-06-27 17:56:43,188 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 17:56:43,269 INFO L124 PetriNetUnfolderBase]: 256/527 cut-off events. [2024-06-27 17:56:43,269 INFO L125 PetriNetUnfolderBase]: For 850/850 co-relation queries the response was YES. [2024-06-27 17:56:43,270 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. [2024-06-27 17:56:43,273 INFO L140 encePairwiseOnDemand]: 26/34 looper letters, 39 selfloop transitions, 18 changer transitions 0/68 dead transitions. [2024-06-27 17:56:43,273 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 57 places, 68 transitions, 466 flow [2024-06-27 17:56:43,273 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-06-27 17:56:43,273 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-06-27 17:56:43,274 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 119 transitions. [2024-06-27 17:56:43,274 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.7 [2024-06-27 17:56:43,274 INFO L175 Difference]: Start difference. First operand has 53 places, 49 transitions, 271 flow. Second operand 5 states and 119 transitions. [2024-06-27 17:56:43,274 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 57 places, 68 transitions, 466 flow [2024-06-27 17:56:43,277 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 56 places, 68 transitions, 449 flow, removed 4 selfloop flow, removed 1 redundant places. [2024-06-27 17:56:43,278 INFO L231 Difference]: Finished difference. Result has 57 places, 51 transitions, 318 flow [2024-06-27 17:56:43,278 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} [2024-06-27 17:56:43,279 INFO L281 CegarLoopForPetriNet]: 36 programPoint places, 21 predicate places. [2024-06-27 17:56:43,279 INFO L495 AbstractCegarLoop]: Abstraction has has 57 places, 51 transitions, 318 flow [2024-06-27 17:56:43,279 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) [2024-06-27 17:56:43,279 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 17:56:43,279 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 17:56:43,279 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-06-27 17:56:43,280 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)] === [2024-06-27 17:56:43,280 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 17:56:43,280 INFO L85 PathProgramCache]: Analyzing trace with hash -999043548, now seen corresponding path program 2 times [2024-06-27 17:56:43,280 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 17:56:43,280 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1450704647] [2024-06-27 17:56:43,280 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 17:56:43,281 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 17:56:43,286 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 17:56:43,327 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 17:56:43,327 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 17:56:43,328 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1450704647] [2024-06-27 17:56:43,328 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1450704647] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 17:56:43,328 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 17:56:43,328 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-06-27 17:56:43,328 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [11746664] [2024-06-27 17:56:43,328 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 17:56:43,329 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-06-27 17:56:43,329 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 17:56:43,329 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-06-27 17:56:43,329 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2024-06-27 17:56:43,345 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 34 [2024-06-27 17:56:43,345 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) [2024-06-27 17:56:43,345 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 17:56:43,345 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 34 [2024-06-27 17:56:43,346 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 17:56:43,421 INFO L124 PetriNetUnfolderBase]: 246/503 cut-off events. [2024-06-27 17:56:43,421 INFO L125 PetriNetUnfolderBase]: For 1203/1205 co-relation queries the response was YES. [2024-06-27 17:56:43,423 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. [2024-06-27 17:56:43,425 INFO L140 encePairwiseOnDemand]: 26/34 looper letters, 35 selfloop transitions, 18 changer transitions 0/64 dead transitions. [2024-06-27 17:56:43,425 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 61 places, 64 transitions, 466 flow [2024-06-27 17:56:43,426 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-06-27 17:56:43,426 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-06-27 17:56:43,426 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 115 transitions. [2024-06-27 17:56:43,426 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6764705882352942 [2024-06-27 17:56:43,426 INFO L175 Difference]: Start difference. First operand has 57 places, 51 transitions, 318 flow. Second operand 5 states and 115 transitions. [2024-06-27 17:56:43,426 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 61 places, 64 transitions, 466 flow [2024-06-27 17:56:43,430 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 59 places, 64 transitions, 442 flow, removed 2 selfloop flow, removed 2 redundant places. [2024-06-27 17:56:43,431 INFO L231 Difference]: Finished difference. Result has 60 places, 51 transitions, 337 flow [2024-06-27 17:56:43,431 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} [2024-06-27 17:56:43,432 INFO L281 CegarLoopForPetriNet]: 36 programPoint places, 24 predicate places. [2024-06-27 17:56:43,432 INFO L495 AbstractCegarLoop]: Abstraction has has 60 places, 51 transitions, 337 flow [2024-06-27 17:56:43,432 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) [2024-06-27 17:56:43,432 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 17:56:43,432 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 17:56:43,432 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-06-27 17:56:43,432 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)] === [2024-06-27 17:56:43,433 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 17:56:43,433 INFO L85 PathProgramCache]: Analyzing trace with hash -749181814, now seen corresponding path program 1 times [2024-06-27 17:56:43,433 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 17:56:43,433 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1143214784] [2024-06-27 17:56:43,433 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 17:56:43,433 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 17:56:43,439 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 17:56:43,494 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 17:56:43,494 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 17:56:43,494 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1143214784] [2024-06-27 17:56:43,494 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1143214784] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 17:56:43,494 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 17:56:43,494 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-06-27 17:56:43,495 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1973502983] [2024-06-27 17:56:43,495 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 17:56:43,495 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-06-27 17:56:43,495 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 17:56:43,496 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-06-27 17:56:43,496 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2024-06-27 17:56:43,532 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 34 [2024-06-27 17:56:43,532 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) [2024-06-27 17:56:43,532 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 17:56:43,532 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 34 [2024-06-27 17:56:43,532 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 17:56:43,634 INFO L124 PetriNetUnfolderBase]: 285/598 cut-off events. [2024-06-27 17:56:43,635 INFO L125 PetriNetUnfolderBase]: For 1867/1869 co-relation queries the response was YES. [2024-06-27 17:56:43,636 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. [2024-06-27 17:56:43,639 INFO L140 encePairwiseOnDemand]: 26/34 looper letters, 40 selfloop transitions, 21 changer transitions 0/72 dead transitions. [2024-06-27 17:56:43,639 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 65 places, 72 transitions, 529 flow [2024-06-27 17:56:43,640 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-27 17:56:43,640 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-27 17:56:43,641 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 138 transitions. [2024-06-27 17:56:43,641 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6764705882352942 [2024-06-27 17:56:43,641 INFO L175 Difference]: Start difference. First operand has 60 places, 51 transitions, 337 flow. Second operand 6 states and 138 transitions. [2024-06-27 17:56:43,641 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 65 places, 72 transitions, 529 flow [2024-06-27 17:56:43,644 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 59 places, 72 transitions, 463 flow, removed 1 selfloop flow, removed 6 redundant places. [2024-06-27 17:56:43,646 INFO L231 Difference]: Finished difference. Result has 60 places, 52 transitions, 329 flow [2024-06-27 17:56:43,646 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} [2024-06-27 17:56:43,647 INFO L281 CegarLoopForPetriNet]: 36 programPoint places, 24 predicate places. [2024-06-27 17:56:43,647 INFO L495 AbstractCegarLoop]: Abstraction has has 60 places, 52 transitions, 329 flow [2024-06-27 17:56:43,647 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) [2024-06-27 17:56:43,647 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 17:56:43,647 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 17:56:43,647 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-06-27 17:56:43,647 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)] === [2024-06-27 17:56:43,648 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 17:56:43,648 INFO L85 PathProgramCache]: Analyzing trace with hash 947282812, now seen corresponding path program 1 times [2024-06-27 17:56:43,648 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 17:56:43,648 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [60878608] [2024-06-27 17:56:43,648 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 17:56:43,649 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 17:56:43,654 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 17:56:43,698 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 17:56:43,699 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 17:56:43,699 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [60878608] [2024-06-27 17:56:43,699 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [60878608] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 17:56:43,699 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 17:56:43,700 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-06-27 17:56:43,700 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [434401424] [2024-06-27 17:56:43,703 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 17:56:43,704 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-06-27 17:56:43,704 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 17:56:43,704 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-06-27 17:56:43,704 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2024-06-27 17:56:43,723 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 34 [2024-06-27 17:56:43,723 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) [2024-06-27 17:56:43,724 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 17:56:43,724 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 34 [2024-06-27 17:56:43,724 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 17:56:43,820 INFO L124 PetriNetUnfolderBase]: 292/607 cut-off events. [2024-06-27 17:56:43,821 INFO L125 PetriNetUnfolderBase]: For 1441/1443 co-relation queries the response was YES. [2024-06-27 17:56:43,822 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. [2024-06-27 17:56:43,825 INFO L140 encePairwiseOnDemand]: 27/34 looper letters, 39 selfloop transitions, 17 changer transitions 0/67 dead transitions. [2024-06-27 17:56:43,825 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 64 places, 67 transitions, 503 flow [2024-06-27 17:56:43,825 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-06-27 17:56:43,826 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-06-27 17:56:43,826 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 113 transitions. [2024-06-27 17:56:43,826 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6647058823529411 [2024-06-27 17:56:43,826 INFO L175 Difference]: Start difference. First operand has 60 places, 52 transitions, 329 flow. Second operand 5 states and 113 transitions. [2024-06-27 17:56:43,827 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 64 places, 67 transitions, 503 flow [2024-06-27 17:56:43,831 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 59 places, 67 transitions, 438 flow, removed 5 selfloop flow, removed 5 redundant places. [2024-06-27 17:56:43,832 INFO L231 Difference]: Finished difference. Result has 60 places, 54 transitions, 319 flow [2024-06-27 17:56:43,832 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} [2024-06-27 17:56:43,833 INFO L281 CegarLoopForPetriNet]: 36 programPoint places, 24 predicate places. [2024-06-27 17:56:43,833 INFO L495 AbstractCegarLoop]: Abstraction has has 60 places, 54 transitions, 319 flow [2024-06-27 17:56:43,833 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) [2024-06-27 17:56:43,833 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 17:56:43,833 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 17:56:43,834 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-06-27 17:56:43,834 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)] === [2024-06-27 17:56:43,834 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 17:56:43,834 INFO L85 PathProgramCache]: Analyzing trace with hash 946509052, now seen corresponding path program 2 times [2024-06-27 17:56:43,835 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 17:56:43,835 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1614256836] [2024-06-27 17:56:43,835 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 17:56:43,835 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 17:56:43,841 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 17:56:43,884 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 17:56:43,885 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 17:56:43,885 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1614256836] [2024-06-27 17:56:43,885 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1614256836] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 17:56:43,885 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 17:56:43,885 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-06-27 17:56:43,885 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1856064094] [2024-06-27 17:56:43,886 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 17:56:43,886 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-06-27 17:56:43,886 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 17:56:43,887 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-06-27 17:56:43,887 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2024-06-27 17:56:43,905 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 34 [2024-06-27 17:56:43,906 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) [2024-06-27 17:56:43,906 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 17:56:43,906 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 34 [2024-06-27 17:56:43,906 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 17:56:43,982 INFO L124 PetriNetUnfolderBase]: 290/607 cut-off events. [2024-06-27 17:56:43,982 INFO L125 PetriNetUnfolderBase]: For 1401/1403 co-relation queries the response was YES. [2024-06-27 17:56:43,984 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. [2024-06-27 17:56:43,986 INFO L140 encePairwiseOnDemand]: 27/34 looper letters, 41 selfloop transitions, 17 changer transitions 0/69 dead transitions. [2024-06-27 17:56:43,986 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 64 places, 69 transitions, 469 flow [2024-06-27 17:56:43,987 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-06-27 17:56:43,987 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-06-27 17:56:43,987 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 115 transitions. [2024-06-27 17:56:43,988 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6764705882352942 [2024-06-27 17:56:43,988 INFO L175 Difference]: Start difference. First operand has 60 places, 54 transitions, 319 flow. Second operand 5 states and 115 transitions. [2024-06-27 17:56:43,988 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 64 places, 69 transitions, 469 flow [2024-06-27 17:56:43,992 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 61 places, 69 transitions, 435 flow, removed 0 selfloop flow, removed 3 redundant places. [2024-06-27 17:56:43,993 INFO L231 Difference]: Finished difference. Result has 62 places, 54 transitions, 324 flow [2024-06-27 17:56:43,993 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} [2024-06-27 17:56:43,994 INFO L281 CegarLoopForPetriNet]: 36 programPoint places, 26 predicate places. [2024-06-27 17:56:43,994 INFO L495 AbstractCegarLoop]: Abstraction has has 62 places, 54 transitions, 324 flow [2024-06-27 17:56:43,994 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) [2024-06-27 17:56:43,994 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 17:56:43,995 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 17:56:43,995 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2024-06-27 17:56:43,995 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)] === [2024-06-27 17:56:43,995 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 17:56:43,995 INFO L85 PathProgramCache]: Analyzing trace with hash -671935745, now seen corresponding path program 1 times [2024-06-27 17:56:43,996 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 17:56:43,996 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1658210208] [2024-06-27 17:56:43,996 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 17:56:43,996 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 17:56:44,002 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 17:56:44,055 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 17:56:44,056 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 17:56:44,056 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1658210208] [2024-06-27 17:56:44,056 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1658210208] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 17:56:44,056 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 17:56:44,056 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-06-27 17:56:44,057 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1604589886] [2024-06-27 17:56:44,057 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 17:56:44,057 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-06-27 17:56:44,057 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 17:56:44,058 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-06-27 17:56:44,058 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-06-27 17:56:44,080 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 34 [2024-06-27 17:56:44,081 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) [2024-06-27 17:56:44,081 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 17:56:44,081 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 34 [2024-06-27 17:56:44,081 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 17:56:44,182 INFO L124 PetriNetUnfolderBase]: 342/701 cut-off events. [2024-06-27 17:56:44,182 INFO L125 PetriNetUnfolderBase]: For 2096/2096 co-relation queries the response was YES. [2024-06-27 17:56:44,184 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. [2024-06-27 17:56:44,187 INFO L140 encePairwiseOnDemand]: 27/34 looper letters, 48 selfloop transitions, 21 changer transitions 0/80 dead transitions. [2024-06-27 17:56:44,187 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 67 places, 80 transitions, 560 flow [2024-06-27 17:56:44,188 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-27 17:56:44,188 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-27 17:56:44,188 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 139 transitions. [2024-06-27 17:56:44,189 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6813725490196079 [2024-06-27 17:56:44,189 INFO L175 Difference]: Start difference. First operand has 62 places, 54 transitions, 324 flow. Second operand 6 states and 139 transitions. [2024-06-27 17:56:44,189 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 67 places, 80 transitions, 560 flow [2024-06-27 17:56:44,193 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 62 places, 80 transitions, 506 flow, removed 0 selfloop flow, removed 5 redundant places. [2024-06-27 17:56:44,194 INFO L231 Difference]: Finished difference. Result has 63 places, 55 transitions, 326 flow [2024-06-27 17:56:44,195 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} [2024-06-27 17:56:44,195 INFO L281 CegarLoopForPetriNet]: 36 programPoint places, 27 predicate places. [2024-06-27 17:56:44,196 INFO L495 AbstractCegarLoop]: Abstraction has has 63 places, 55 transitions, 326 flow [2024-06-27 17:56:44,196 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) [2024-06-27 17:56:44,196 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 17:56:44,196 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 17:56:44,196 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2024-06-27 17:56:44,197 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)] === [2024-06-27 17:56:44,197 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 17:56:44,197 INFO L85 PathProgramCache]: Analyzing trace with hash -2062983305, now seen corresponding path program 2 times [2024-06-27 17:56:44,198 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 17:56:44,198 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [102620035] [2024-06-27 17:56:44,198 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 17:56:44,198 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 17:56:44,208 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 17:56:44,270 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 17:56:44,270 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 17:56:44,271 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [102620035] [2024-06-27 17:56:44,271 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [102620035] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 17:56:44,271 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 17:56:44,271 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-06-27 17:56:44,271 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1140379685] [2024-06-27 17:56:44,271 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 17:56:44,272 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-06-27 17:56:44,272 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 17:56:44,273 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-06-27 17:56:44,273 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2024-06-27 17:56:44,297 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 34 [2024-06-27 17:56:44,298 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) [2024-06-27 17:56:44,298 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 17:56:44,298 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 34 [2024-06-27 17:56:44,298 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 17:56:44,424 INFO L124 PetriNetUnfolderBase]: 339/700 cut-off events. [2024-06-27 17:56:44,424 INFO L125 PetriNetUnfolderBase]: For 2063/2063 co-relation queries the response was YES. [2024-06-27 17:56:44,426 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. [2024-06-27 17:56:44,429 INFO L140 encePairwiseOnDemand]: 26/34 looper letters, 42 selfloop transitions, 21 changer transitions 0/74 dead transitions. [2024-06-27 17:56:44,429 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 68 places, 74 transitions, 494 flow [2024-06-27 17:56:44,429 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-27 17:56:44,429 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-27 17:56:44,430 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 136 transitions. [2024-06-27 17:56:44,431 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6666666666666666 [2024-06-27 17:56:44,431 INFO L175 Difference]: Start difference. First operand has 63 places, 55 transitions, 326 flow. Second operand 6 states and 136 transitions. [2024-06-27 17:56:44,431 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 68 places, 74 transitions, 494 flow [2024-06-27 17:56:44,437 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 65 places, 74 transitions, 453 flow, removed 4 selfloop flow, removed 3 redundant places. [2024-06-27 17:56:44,438 INFO L231 Difference]: Finished difference. Result has 66 places, 55 transitions, 331 flow [2024-06-27 17:56:44,438 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} [2024-06-27 17:56:44,439 INFO L281 CegarLoopForPetriNet]: 36 programPoint places, 30 predicate places. [2024-06-27 17:56:44,439 INFO L495 AbstractCegarLoop]: Abstraction has has 66 places, 55 transitions, 331 flow [2024-06-27 17:56:44,440 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) [2024-06-27 17:56:44,440 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 17:56:44,440 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 17:56:44,441 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2024-06-27 17:56:44,441 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)] === [2024-06-27 17:56:44,441 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 17:56:44,441 INFO L85 PathProgramCache]: Analyzing trace with hash 1498332217, now seen corresponding path program 1 times [2024-06-27 17:56:44,441 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 17:56:44,442 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1170601800] [2024-06-27 17:56:44,442 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 17:56:44,442 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 17:56:44,448 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 17:56:44,507 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 17:56:44,507 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 17:56:44,508 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1170601800] [2024-06-27 17:56:44,508 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1170601800] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 17:56:44,508 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 17:56:44,508 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-06-27 17:56:44,508 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1608297885] [2024-06-27 17:56:44,509 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 17:56:44,509 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-06-27 17:56:44,509 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 17:56:44,509 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-06-27 17:56:44,510 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2024-06-27 17:56:44,550 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 34 [2024-06-27 17:56:44,551 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) [2024-06-27 17:56:44,551 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 17:56:44,551 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 34 [2024-06-27 17:56:44,551 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 17:56:44,657 INFO L124 PetriNetUnfolderBase]: 336/708 cut-off events. [2024-06-27 17:56:44,657 INFO L125 PetriNetUnfolderBase]: For 2335/2337 co-relation queries the response was YES. [2024-06-27 17:56:44,659 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. [2024-06-27 17:56:44,662 INFO L140 encePairwiseOnDemand]: 26/34 looper letters, 40 selfloop transitions, 21 changer transitions 0/72 dead transitions. [2024-06-27 17:56:44,663 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 71 places, 72 transitions, 497 flow [2024-06-27 17:56:44,663 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-27 17:56:44,663 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-27 17:56:44,664 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 133 transitions. [2024-06-27 17:56:44,664 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6519607843137255 [2024-06-27 17:56:44,664 INFO L175 Difference]: Start difference. First operand has 66 places, 55 transitions, 331 flow. Second operand 6 states and 133 transitions. [2024-06-27 17:56:44,664 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 71 places, 72 transitions, 497 flow [2024-06-27 17:56:44,669 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 66 places, 72 transitions, 442 flow, removed 4 selfloop flow, removed 5 redundant places. [2024-06-27 17:56:44,670 INFO L231 Difference]: Finished difference. Result has 67 places, 56 transitions, 334 flow [2024-06-27 17:56:44,670 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} [2024-06-27 17:56:44,671 INFO L281 CegarLoopForPetriNet]: 36 programPoint places, 31 predicate places. [2024-06-27 17:56:44,671 INFO L495 AbstractCegarLoop]: Abstraction has has 67 places, 56 transitions, 334 flow [2024-06-27 17:56:44,671 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) [2024-06-27 17:56:44,671 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 17:56:44,672 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 17:56:44,672 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2024-06-27 17:56:44,672 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)] === [2024-06-27 17:56:44,672 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 17:56:44,672 INFO L85 PathProgramCache]: Analyzing trace with hash 897808249, now seen corresponding path program 2 times [2024-06-27 17:56:44,673 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 17:56:44,673 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1720435911] [2024-06-27 17:56:44,673 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 17:56:44,673 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 17:56:44,678 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 17:56:44,732 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 17:56:44,733 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 17:56:44,733 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1720435911] [2024-06-27 17:56:44,733 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1720435911] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 17:56:44,733 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 17:56:44,733 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-06-27 17:56:44,734 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [229506554] [2024-06-27 17:56:44,734 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 17:56:44,734 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-06-27 17:56:44,734 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 17:56:44,735 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-06-27 17:56:44,735 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-06-27 17:56:44,768 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 34 [2024-06-27 17:56:44,768 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) [2024-06-27 17:56:44,768 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 17:56:44,768 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 34 [2024-06-27 17:56:44,769 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 17:56:44,871 INFO L124 PetriNetUnfolderBase]: 333/686 cut-off events. [2024-06-27 17:56:44,871 INFO L125 PetriNetUnfolderBase]: For 2242/2244 co-relation queries the response was YES. [2024-06-27 17:56:44,873 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. [2024-06-27 17:56:44,876 INFO L140 encePairwiseOnDemand]: 27/34 looper letters, 45 selfloop transitions, 21 changer transitions 0/77 dead transitions. [2024-06-27 17:56:44,876 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 72 places, 77 transitions, 542 flow [2024-06-27 17:56:44,877 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-27 17:56:44,877 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-27 17:56:44,878 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 136 transitions. [2024-06-27 17:56:44,878 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6666666666666666 [2024-06-27 17:56:44,878 INFO L175 Difference]: Start difference. First operand has 67 places, 56 transitions, 334 flow. Second operand 6 states and 136 transitions. [2024-06-27 17:56:44,878 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 72 places, 77 transitions, 542 flow [2024-06-27 17:56:44,884 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 68 places, 77 transitions, 494 flow, removed 4 selfloop flow, removed 4 redundant places. [2024-06-27 17:56:44,886 INFO L231 Difference]: Finished difference. Result has 69 places, 56 transitions, 332 flow [2024-06-27 17:56:44,886 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} [2024-06-27 17:56:44,886 INFO L281 CegarLoopForPetriNet]: 36 programPoint places, 33 predicate places. [2024-06-27 17:56:44,886 INFO L495 AbstractCegarLoop]: Abstraction has has 69 places, 56 transitions, 332 flow [2024-06-27 17:56:44,887 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) [2024-06-27 17:56:44,887 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 17:56:44,887 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 17:56:44,887 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2024-06-27 17:56:44,887 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)] === [2024-06-27 17:56:44,888 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 17:56:44,888 INFO L85 PathProgramCache]: Analyzing trace with hash 1583913011, now seen corresponding path program 1 times [2024-06-27 17:56:44,888 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 17:56:44,888 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1780642849] [2024-06-27 17:56:44,888 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 17:56:44,889 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 17:56:44,903 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 17:56:44,959 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 17:56:44,960 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 17:56:44,960 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1780642849] [2024-06-27 17:56:44,960 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1780642849] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 17:56:44,960 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 17:56:44,968 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-06-27 17:56:44,968 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2119510990] [2024-06-27 17:56:44,968 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 17:56:44,968 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-06-27 17:56:44,969 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 17:56:44,969 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-06-27 17:56:44,969 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-06-27 17:56:44,976 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 19 out of 34 [2024-06-27 17:56:44,977 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) [2024-06-27 17:56:44,977 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 17:56:44,977 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 19 of 34 [2024-06-27 17:56:44,977 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 17:56:45,081 INFO L124 PetriNetUnfolderBase]: 232/672 cut-off events. [2024-06-27 17:56:45,082 INFO L125 PetriNetUnfolderBase]: For 670/674 co-relation queries the response was YES. [2024-06-27 17:56:45,084 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. [2024-06-27 17:56:45,086 INFO L140 encePairwiseOnDemand]: 29/34 looper letters, 20 selfloop transitions, 12 changer transitions 0/65 dead transitions. [2024-06-27 17:56:45,086 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 72 places, 65 transitions, 420 flow [2024-06-27 17:56:45,087 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-06-27 17:56:45,087 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-06-27 17:56:45,088 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 102 transitions. [2024-06-27 17:56:45,088 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.75 [2024-06-27 17:56:45,088 INFO L175 Difference]: Start difference. First operand has 69 places, 56 transitions, 332 flow. Second operand 4 states and 102 transitions. [2024-06-27 17:56:45,088 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 72 places, 65 transitions, 420 flow [2024-06-27 17:56:45,092 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 67 places, 65 transitions, 359 flow, removed 5 selfloop flow, removed 5 redundant places. [2024-06-27 17:56:45,093 INFO L231 Difference]: Finished difference. Result has 69 places, 57 transitions, 325 flow [2024-06-27 17:56:45,093 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} [2024-06-27 17:56:45,094 INFO L281 CegarLoopForPetriNet]: 36 programPoint places, 33 predicate places. [2024-06-27 17:56:45,094 INFO L495 AbstractCegarLoop]: Abstraction has has 69 places, 57 transitions, 325 flow [2024-06-27 17:56:45,094 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) [2024-06-27 17:56:45,094 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 17:56:45,095 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 17:56:45,095 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2024-06-27 17:56:45,095 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)] === [2024-06-27 17:56:45,095 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 17:56:45,096 INFO L85 PathProgramCache]: Analyzing trace with hash -612289119, now seen corresponding path program 1 times [2024-06-27 17:56:45,096 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 17:56:45,096 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [125545354] [2024-06-27 17:56:45,096 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 17:56:45,096 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 17:56:45,104 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 17:56:45,172 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 17:56:45,172 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 17:56:45,173 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [125545354] [2024-06-27 17:56:45,173 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [125545354] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 17:56:45,173 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 17:56:45,173 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-06-27 17:56:45,173 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [793647813] [2024-06-27 17:56:45,173 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 17:56:45,174 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-06-27 17:56:45,174 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 17:56:45,175 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-06-27 17:56:45,175 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-06-27 17:56:45,204 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 34 [2024-06-27 17:56:45,204 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) [2024-06-27 17:56:45,205 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 17:56:45,205 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 34 [2024-06-27 17:56:45,205 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 17:56:45,303 INFO L124 PetriNetUnfolderBase]: 295/694 cut-off events. [2024-06-27 17:56:45,304 INFO L125 PetriNetUnfolderBase]: For 2233/2239 co-relation queries the response was YES. [2024-06-27 17:56:45,306 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. [2024-06-27 17:56:45,308 INFO L140 encePairwiseOnDemand]: 27/34 looper letters, 42 selfloop transitions, 21 changer transitions 0/75 dead transitions. [2024-06-27 17:56:45,308 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 74 places, 75 transitions, 503 flow [2024-06-27 17:56:45,309 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-27 17:56:45,309 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-27 17:56:45,309 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 132 transitions. [2024-06-27 17:56:45,310 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6470588235294118 [2024-06-27 17:56:45,310 INFO L175 Difference]: Start difference. First operand has 69 places, 57 transitions, 325 flow. Second operand 6 states and 132 transitions. [2024-06-27 17:56:45,310 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 74 places, 75 transitions, 503 flow [2024-06-27 17:56:45,315 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 72 places, 75 transitions, 490 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-06-27 17:56:45,319 INFO L231 Difference]: Finished difference. Result has 73 places, 57 transitions, 357 flow [2024-06-27 17:56:45,320 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} [2024-06-27 17:56:45,320 INFO L281 CegarLoopForPetriNet]: 36 programPoint places, 37 predicate places. [2024-06-27 17:56:45,321 INFO L495 AbstractCegarLoop]: Abstraction has has 73 places, 57 transitions, 357 flow [2024-06-27 17:56:45,321 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) [2024-06-27 17:56:45,321 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 17:56:45,321 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 17:56:45,321 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2024-06-27 17:56:45,321 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)] === [2024-06-27 17:56:45,322 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 17:56:45,322 INFO L85 PathProgramCache]: Analyzing trace with hash 571093045, now seen corresponding path program 2 times [2024-06-27 17:56:45,322 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 17:56:45,322 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [986628331] [2024-06-27 17:56:45,323 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 17:56:45,323 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 17:56:45,330 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 17:56:45,383 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 17:56:45,383 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 17:56:45,383 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [986628331] [2024-06-27 17:56:45,383 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [986628331] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 17:56:45,383 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 17:56:45,384 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-06-27 17:56:45,384 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1415564796] [2024-06-27 17:56:45,384 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 17:56:45,384 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-06-27 17:56:45,385 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 17:56:45,385 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-06-27 17:56:45,385 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2024-06-27 17:56:45,406 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 34 [2024-06-27 17:56:45,407 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) [2024-06-27 17:56:45,407 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 17:56:45,407 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 34 [2024-06-27 17:56:45,407 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 17:56:45,505 INFO L124 PetriNetUnfolderBase]: 318/757 cut-off events. [2024-06-27 17:56:45,505 INFO L125 PetriNetUnfolderBase]: For 2562/2574 co-relation queries the response was YES. [2024-06-27 17:56:45,507 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. [2024-06-27 17:56:45,510 INFO L140 encePairwiseOnDemand]: 28/34 looper letters, 46 selfloop transitions, 13 changer transitions 0/71 dead transitions. [2024-06-27 17:56:45,510 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 78 places, 71 transitions, 515 flow [2024-06-27 17:56:45,511 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-27 17:56:45,511 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-27 17:56:45,512 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 123 transitions. [2024-06-27 17:56:45,512 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6029411764705882 [2024-06-27 17:56:45,512 INFO L175 Difference]: Start difference. First operand has 73 places, 57 transitions, 357 flow. Second operand 6 states and 123 transitions. [2024-06-27 17:56:45,512 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 78 places, 71 transitions, 515 flow [2024-06-27 17:56:45,518 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 74 places, 71 transitions, 474 flow, removed 0 selfloop flow, removed 4 redundant places. [2024-06-27 17:56:45,519 INFO L231 Difference]: Finished difference. Result has 75 places, 57 transitions, 345 flow [2024-06-27 17:56:45,519 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} [2024-06-27 17:56:45,519 INFO L281 CegarLoopForPetriNet]: 36 programPoint places, 39 predicate places. [2024-06-27 17:56:45,520 INFO L495 AbstractCegarLoop]: Abstraction has has 75 places, 57 transitions, 345 flow [2024-06-27 17:56:45,520 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) [2024-06-27 17:56:45,520 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 17:56:45,520 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 17:56:45,520 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2024-06-27 17:56:45,520 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)] === [2024-06-27 17:56:45,521 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 17:56:45,521 INFO L85 PathProgramCache]: Analyzing trace with hash -937996131, now seen corresponding path program 3 times [2024-06-27 17:56:45,521 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 17:56:45,521 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1246654346] [2024-06-27 17:56:45,521 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 17:56:45,522 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 17:56:45,527 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 17:56:45,578 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 17:56:45,578 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 17:56:45,578 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1246654346] [2024-06-27 17:56:45,578 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1246654346] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 17:56:45,579 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 17:56:45,579 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-06-27 17:56:45,579 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1620561566] [2024-06-27 17:56:45,579 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 17:56:45,579 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-06-27 17:56:45,580 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 17:56:45,580 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-06-27 17:56:45,580 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-06-27 17:56:45,603 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 34 [2024-06-27 17:56:45,604 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) [2024-06-27 17:56:45,604 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 17:56:45,604 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 34 [2024-06-27 17:56:45,604 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 17:56:45,755 INFO L124 PetriNetUnfolderBase]: 371/912 cut-off events. [2024-06-27 17:56:45,755 INFO L125 PetriNetUnfolderBase]: For 3736/3749 co-relation queries the response was YES. [2024-06-27 17:56:45,758 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. [2024-06-27 17:56:45,761 INFO L140 encePairwiseOnDemand]: 27/34 looper letters, 49 selfloop transitions, 18 changer transitions 0/79 dead transitions. [2024-06-27 17:56:45,761 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 80 places, 79 transitions, 575 flow [2024-06-27 17:56:45,761 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-27 17:56:45,762 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-27 17:56:45,762 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 135 transitions. [2024-06-27 17:56:45,762 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6617647058823529 [2024-06-27 17:56:45,762 INFO L175 Difference]: Start difference. First operand has 75 places, 57 transitions, 345 flow. Second operand 6 states and 135 transitions. [2024-06-27 17:56:45,762 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 80 places, 79 transitions, 575 flow [2024-06-27 17:56:45,770 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 76 places, 79 transitions, 550 flow, removed 0 selfloop flow, removed 4 redundant places. [2024-06-27 17:56:45,771 INFO L231 Difference]: Finished difference. Result has 77 places, 57 transitions, 359 flow [2024-06-27 17:56:45,771 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} [2024-06-27 17:56:45,771 INFO L281 CegarLoopForPetriNet]: 36 programPoint places, 41 predicate places. [2024-06-27 17:56:45,772 INFO L495 AbstractCegarLoop]: Abstraction has has 77 places, 57 transitions, 359 flow [2024-06-27 17:56:45,772 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) [2024-06-27 17:56:45,772 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 17:56:45,772 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 17:56:45,772 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2024-06-27 17:56:45,772 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)] === [2024-06-27 17:56:45,773 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 17:56:45,773 INFO L85 PathProgramCache]: Analyzing trace with hash -932485881, now seen corresponding path program 4 times [2024-06-27 17:56:45,773 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 17:56:45,773 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [431034297] [2024-06-27 17:56:45,773 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 17:56:45,773 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 17:56:45,779 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 17:56:45,838 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 17:56:45,838 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 17:56:45,838 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [431034297] [2024-06-27 17:56:45,839 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [431034297] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 17:56:45,839 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 17:56:45,839 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-06-27 17:56:45,839 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [545533340] [2024-06-27 17:56:45,839 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 17:56:45,840 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-06-27 17:56:45,840 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 17:56:45,840 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-06-27 17:56:45,840 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2024-06-27 17:56:45,863 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 34 [2024-06-27 17:56:45,864 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) [2024-06-27 17:56:45,864 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 17:56:45,864 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 34 [2024-06-27 17:56:45,864 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 17:56:45,991 INFO L124 PetriNetUnfolderBase]: 405/967 cut-off events. [2024-06-27 17:56:45,991 INFO L125 PetriNetUnfolderBase]: For 4478/4490 co-relation queries the response was YES. [2024-06-27 17:56:45,995 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. [2024-06-27 17:56:45,998 INFO L140 encePairwiseOnDemand]: 27/34 looper letters, 41 selfloop transitions, 17 changer transitions 0/70 dead transitions. [2024-06-27 17:56:45,999 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 82 places, 70 transitions, 511 flow [2024-06-27 17:56:45,999 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-27 17:56:45,999 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-27 17:56:46,000 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 127 transitions. [2024-06-27 17:56:46,000 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6225490196078431 [2024-06-27 17:56:46,000 INFO L175 Difference]: Start difference. First operand has 77 places, 57 transitions, 359 flow. Second operand 6 states and 127 transitions. [2024-06-27 17:56:46,000 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 82 places, 70 transitions, 511 flow [2024-06-27 17:56:46,007 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 78 places, 70 transitions, 476 flow, removed 0 selfloop flow, removed 4 redundant places. [2024-06-27 17:56:46,009 INFO L231 Difference]: Finished difference. Result has 79 places, 57 transitions, 362 flow [2024-06-27 17:56:46,009 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} [2024-06-27 17:56:46,009 INFO L281 CegarLoopForPetriNet]: 36 programPoint places, 43 predicate places. [2024-06-27 17:56:46,010 INFO L495 AbstractCegarLoop]: Abstraction has has 79 places, 57 transitions, 362 flow [2024-06-27 17:56:46,010 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) [2024-06-27 17:56:46,010 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 17:56:46,010 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 17:56:46,010 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2024-06-27 17:56:46,010 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)] === [2024-06-27 17:56:46,011 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 17:56:46,011 INFO L85 PathProgramCache]: Analyzing trace with hash -937848261, now seen corresponding path program 5 times [2024-06-27 17:56:46,011 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 17:56:46,011 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1451112682] [2024-06-27 17:56:46,011 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 17:56:46,012 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 17:56:46,017 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 17:56:46,088 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 17:56:46,088 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 17:56:46,089 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1451112682] [2024-06-27 17:56:46,089 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1451112682] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 17:56:46,089 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 17:56:46,089 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-06-27 17:56:46,089 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [730977409] [2024-06-27 17:56:46,089 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 17:56:46,090 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-06-27 17:56:46,090 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 17:56:46,090 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-06-27 17:56:46,090 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2024-06-27 17:56:46,111 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 34 [2024-06-27 17:56:46,111 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) [2024-06-27 17:56:46,111 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 17:56:46,111 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 34 [2024-06-27 17:56:46,112 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 17:56:46,232 INFO L124 PetriNetUnfolderBase]: 395/950 cut-off events. [2024-06-27 17:56:46,232 INFO L125 PetriNetUnfolderBase]: For 3371/3384 co-relation queries the response was YES. [2024-06-27 17:56:46,236 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. [2024-06-27 17:56:46,239 INFO L140 encePairwiseOnDemand]: 27/34 looper letters, 44 selfloop transitions, 17 changer transitions 0/73 dead transitions. [2024-06-27 17:56:46,240 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 84 places, 73 transitions, 528 flow [2024-06-27 17:56:46,240 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-27 17:56:46,240 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-27 17:56:46,241 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 130 transitions. [2024-06-27 17:56:46,241 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6372549019607843 [2024-06-27 17:56:46,241 INFO L175 Difference]: Start difference. First operand has 79 places, 57 transitions, 362 flow. Second operand 6 states and 130 transitions. [2024-06-27 17:56:46,241 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 84 places, 73 transitions, 528 flow [2024-06-27 17:56:46,249 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 80 places, 73 transitions, 496 flow, removed 0 selfloop flow, removed 4 redundant places. [2024-06-27 17:56:46,251 INFO L231 Difference]: Finished difference. Result has 81 places, 57 transitions, 368 flow [2024-06-27 17:56:46,251 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} [2024-06-27 17:56:46,251 INFO L281 CegarLoopForPetriNet]: 36 programPoint places, 45 predicate places. [2024-06-27 17:56:46,252 INFO L495 AbstractCegarLoop]: Abstraction has has 81 places, 57 transitions, 368 flow [2024-06-27 17:56:46,252 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) [2024-06-27 17:56:46,252 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 17:56:46,252 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 17:56:46,252 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2024-06-27 17:56:46,252 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)] === [2024-06-27 17:56:46,253 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 17:56:46,253 INFO L85 PathProgramCache]: Analyzing trace with hash -932270679, now seen corresponding path program 1 times [2024-06-27 17:56:46,253 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 17:56:46,253 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1703100161] [2024-06-27 17:56:46,253 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 17:56:46,254 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 17:56:46,259 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 17:56:46,319 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 17:56:46,320 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 17:56:46,320 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1703100161] [2024-06-27 17:56:46,320 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1703100161] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 17:56:46,320 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 17:56:46,320 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-06-27 17:56:46,320 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1554631736] [2024-06-27 17:56:46,321 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 17:56:46,321 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-06-27 17:56:46,321 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 17:56:46,322 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-06-27 17:56:46,322 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-06-27 17:56:46,345 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 34 [2024-06-27 17:56:46,346 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) [2024-06-27 17:56:46,346 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 17:56:46,346 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 34 [2024-06-27 17:56:46,346 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 17:56:46,473 INFO L124 PetriNetUnfolderBase]: 418/1015 cut-off events. [2024-06-27 17:56:46,473 INFO L125 PetriNetUnfolderBase]: For 3298/3310 co-relation queries the response was YES. [2024-06-27 17:56:46,477 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. [2024-06-27 17:56:46,481 INFO L140 encePairwiseOnDemand]: 27/34 looper letters, 45 selfloop transitions, 18 changer transitions 0/75 dead transitions. [2024-06-27 17:56:46,481 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 86 places, 75 transitions, 546 flow [2024-06-27 17:56:46,482 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-27 17:56:46,482 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-27 17:56:46,482 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 131 transitions. [2024-06-27 17:56:46,483 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6421568627450981 [2024-06-27 17:56:46,483 INFO L175 Difference]: Start difference. First operand has 81 places, 57 transitions, 368 flow. Second operand 6 states and 131 transitions. [2024-06-27 17:56:46,483 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 86 places, 75 transitions, 546 flow [2024-06-27 17:56:46,490 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 82 places, 75 transitions, 514 flow, removed 0 selfloop flow, removed 4 redundant places. [2024-06-27 17:56:46,492 INFO L231 Difference]: Finished difference. Result has 83 places, 57 transitions, 375 flow [2024-06-27 17:56:46,492 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} [2024-06-27 17:56:46,492 INFO L281 CegarLoopForPetriNet]: 36 programPoint places, 47 predicate places. [2024-06-27 17:56:46,493 INFO L495 AbstractCegarLoop]: Abstraction has has 83 places, 57 transitions, 375 flow [2024-06-27 17:56:46,493 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) [2024-06-27 17:56:46,493 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 17:56:46,493 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 17:56:46,493 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2024-06-27 17:56:46,493 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)] === [2024-06-27 17:56:46,494 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 17:56:46,494 INFO L85 PathProgramCache]: Analyzing trace with hash -796340951, now seen corresponding path program 2 times [2024-06-27 17:56:46,494 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 17:56:46,494 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [269527125] [2024-06-27 17:56:46,494 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 17:56:46,495 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 17:56:46,499 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 17:56:46,546 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 17:56:46,546 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 17:56:46,546 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [269527125] [2024-06-27 17:56:46,547 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [269527125] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 17:56:46,547 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 17:56:46,547 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-06-27 17:56:46,547 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [560198534] [2024-06-27 17:56:46,547 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 17:56:46,548 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-06-27 17:56:46,548 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 17:56:46,548 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-06-27 17:56:46,548 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-06-27 17:56:46,573 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 34 [2024-06-27 17:56:46,574 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) [2024-06-27 17:56:46,574 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 17:56:46,574 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 34 [2024-06-27 17:56:46,574 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 17:56:46,711 INFO L124 PetriNetUnfolderBase]: 441/1072 cut-off events. [2024-06-27 17:56:46,712 INFO L125 PetriNetUnfolderBase]: For 3600/3605 co-relation queries the response was YES. [2024-06-27 17:56:46,716 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. [2024-06-27 17:56:46,719 INFO L140 encePairwiseOnDemand]: 27/34 looper letters, 45 selfloop transitions, 21 changer transitions 0/78 dead transitions. [2024-06-27 17:56:46,719 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 88 places, 78 transitions, 567 flow [2024-06-27 17:56:46,720 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-27 17:56:46,720 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-27 17:56:46,720 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 135 transitions. [2024-06-27 17:56:46,720 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6617647058823529 [2024-06-27 17:56:46,721 INFO L175 Difference]: Start difference. First operand has 83 places, 57 transitions, 375 flow. Second operand 6 states and 135 transitions. [2024-06-27 17:56:46,721 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 88 places, 78 transitions, 567 flow [2024-06-27 17:56:46,730 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 84 places, 78 transitions, 532 flow, removed 0 selfloop flow, removed 4 redundant places. [2024-06-27 17:56:46,731 INFO L231 Difference]: Finished difference. Result has 85 places, 57 transitions, 385 flow [2024-06-27 17:56:46,732 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} [2024-06-27 17:56:46,732 INFO L281 CegarLoopForPetriNet]: 36 programPoint places, 49 predicate places. [2024-06-27 17:56:46,732 INFO L495 AbstractCegarLoop]: Abstraction has has 85 places, 57 transitions, 385 flow [2024-06-27 17:56:46,732 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) [2024-06-27 17:56:46,733 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 17:56:46,733 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 17:56:46,733 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2024-06-27 17:56:46,733 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)] === [2024-06-27 17:56:46,733 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 17:56:46,734 INFO L85 PathProgramCache]: Analyzing trace with hash -787144181, now seen corresponding path program 3 times [2024-06-27 17:56:46,734 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 17:56:46,734 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1714007949] [2024-06-27 17:56:46,734 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 17:56:46,734 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 17:56:46,739 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 17:56:46,783 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 17:56:46,784 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 17:56:46,784 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1714007949] [2024-06-27 17:56:46,784 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1714007949] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 17:56:46,784 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 17:56:46,784 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-06-27 17:56:46,784 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1462585870] [2024-06-27 17:56:46,785 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 17:56:46,785 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-06-27 17:56:46,785 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 17:56:46,786 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-06-27 17:56:46,786 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2024-06-27 17:56:46,824 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 34 [2024-06-27 17:56:46,825 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) [2024-06-27 17:56:46,825 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 17:56:46,825 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 34 [2024-06-27 17:56:46,825 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 17:56:46,982 INFO L124 PetriNetUnfolderBase]: 434/1062 cut-off events. [2024-06-27 17:56:46,983 INFO L125 PetriNetUnfolderBase]: For 2449/2461 co-relation queries the response was YES. [2024-06-27 17:56:46,986 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. [2024-06-27 17:56:46,992 INFO L140 encePairwiseOnDemand]: 28/34 looper letters, 45 selfloop transitions, 13 changer transitions 0/70 dead transitions. [2024-06-27 17:56:46,992 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 89 places, 70 transitions, 495 flow [2024-06-27 17:56:46,992 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-27 17:56:46,992 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-27 17:56:46,994 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 122 transitions. [2024-06-27 17:56:46,995 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5980392156862745 [2024-06-27 17:56:46,995 INFO L175 Difference]: Start difference. First operand has 85 places, 57 transitions, 385 flow. Second operand 6 states and 122 transitions. [2024-06-27 17:56:46,995 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 89 places, 70 transitions, 495 flow [2024-06-27 17:56:46,998 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 63 places, 70 transitions, 390 flow, removed 0 selfloop flow, removed 26 redundant places. [2024-06-27 17:56:47,000 INFO L231 Difference]: Finished difference. Result has 63 places, 56 transitions, 260 flow [2024-06-27 17:56:47,000 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} [2024-06-27 17:56:47,000 INFO L281 CegarLoopForPetriNet]: 36 programPoint places, 27 predicate places. [2024-06-27 17:56:47,000 INFO L495 AbstractCegarLoop]: Abstraction has has 63 places, 56 transitions, 260 flow [2024-06-27 17:56:47,002 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) [2024-06-27 17:56:47,002 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 17:56:47,002 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] [2024-06-27 17:56:47,002 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2024-06-27 17:56:47,002 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)] === [2024-06-27 17:56:47,002 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 17:56:47,003 INFO L85 PathProgramCache]: Analyzing trace with hash -558371123, now seen corresponding path program 1 times [2024-06-27 17:56:47,003 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 17:56:47,003 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [949274620] [2024-06-27 17:56:47,003 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 17:56:47,003 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 17:56:47,013 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 17:56:47,096 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 17:56:47,096 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 17:56:47,096 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [949274620] [2024-06-27 17:56:47,096 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [949274620] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 17:56:47,096 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 17:56:47,097 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-06-27 17:56:47,097 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2117603036] [2024-06-27 17:56:47,097 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 17:56:47,097 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-06-27 17:56:47,097 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 17:56:47,098 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-06-27 17:56:47,098 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-06-27 17:56:47,115 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 19 out of 34 [2024-06-27 17:56:47,116 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) [2024-06-27 17:56:47,116 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 17:56:47,116 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 19 of 34 [2024-06-27 17:56:47,116 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 17:56:47,212 INFO L124 PetriNetUnfolderBase]: 322/955 cut-off events. [2024-06-27 17:56:47,212 INFO L125 PetriNetUnfolderBase]: For 531/571 co-relation queries the response was YES. [2024-06-27 17:56:47,214 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. [2024-06-27 17:56:47,216 INFO L140 encePairwiseOnDemand]: 29/34 looper letters, 19 selfloop transitions, 14 changer transitions 1/66 dead transitions. [2024-06-27 17:56:47,216 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 67 places, 66 transitions, 352 flow [2024-06-27 17:56:47,216 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-06-27 17:56:47,216 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-06-27 17:56:47,217 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 123 transitions. [2024-06-27 17:56:47,217 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.7235294117647059 [2024-06-27 17:56:47,217 INFO L175 Difference]: Start difference. First operand has 63 places, 56 transitions, 260 flow. Second operand 5 states and 123 transitions. [2024-06-27 17:56:47,217 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 67 places, 66 transitions, 352 flow [2024-06-27 17:56:47,218 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 63 places, 66 transitions, 327 flow, removed 0 selfloop flow, removed 4 redundant places. [2024-06-27 17:56:47,219 INFO L231 Difference]: Finished difference. Result has 65 places, 56 transitions, 282 flow [2024-06-27 17:56:47,220 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} [2024-06-27 17:56:47,220 INFO L281 CegarLoopForPetriNet]: 36 programPoint places, 29 predicate places. [2024-06-27 17:56:47,220 INFO L495 AbstractCegarLoop]: Abstraction has has 65 places, 56 transitions, 282 flow [2024-06-27 17:56:47,220 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) [2024-06-27 17:56:47,220 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 17:56:47,221 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] [2024-06-27 17:56:47,221 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2024-06-27 17:56:47,221 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)] === [2024-06-27 17:56:47,221 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 17:56:47,221 INFO L85 PathProgramCache]: Analyzing trace with hash -2054953189, now seen corresponding path program 1 times [2024-06-27 17:56:47,222 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 17:56:47,222 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1842132742] [2024-06-27 17:56:47,222 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 17:56:47,222 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 17:56:47,231 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 17:56:47,307 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 17:56:47,308 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 17:56:47,308 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1842132742] [2024-06-27 17:56:47,308 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1842132742] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 17:56:47,308 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 17:56:47,308 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-27 17:56:47,308 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1262616780] [2024-06-27 17:56:47,309 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 17:56:47,309 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-06-27 17:56:47,309 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 17:56:47,310 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-06-27 17:56:47,310 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-06-27 17:56:47,330 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 18 out of 34 [2024-06-27 17:56:47,330 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) [2024-06-27 17:56:47,330 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 17:56:47,331 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 18 of 34 [2024-06-27 17:56:47,331 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 17:56:47,419 INFO L124 PetriNetUnfolderBase]: 243/738 cut-off events. [2024-06-27 17:56:47,419 INFO L125 PetriNetUnfolderBase]: For 517/519 co-relation queries the response was YES. [2024-06-27 17:56:47,421 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. [2024-06-27 17:56:47,421 INFO L140 encePairwiseOnDemand]: 29/34 looper letters, 14 selfloop transitions, 3 changer transitions 29/66 dead transitions. [2024-06-27 17:56:47,422 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 69 places, 66 transitions, 376 flow [2024-06-27 17:56:47,422 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-06-27 17:56:47,422 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-06-27 17:56:47,423 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 116 transitions. [2024-06-27 17:56:47,423 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6823529411764706 [2024-06-27 17:56:47,423 INFO L175 Difference]: Start difference. First operand has 65 places, 56 transitions, 282 flow. Second operand 5 states and 116 transitions. [2024-06-27 17:56:47,423 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 69 places, 66 transitions, 376 flow [2024-06-27 17:56:47,425 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 63 places, 66 transitions, 314 flow, removed 6 selfloop flow, removed 6 redundant places. [2024-06-27 17:56:47,426 INFO L231 Difference]: Finished difference. Result has 66 places, 35 transitions, 137 flow [2024-06-27 17:56:47,426 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} [2024-06-27 17:56:47,427 INFO L281 CegarLoopForPetriNet]: 36 programPoint places, 30 predicate places. [2024-06-27 17:56:47,427 INFO L495 AbstractCegarLoop]: Abstraction has has 66 places, 35 transitions, 137 flow [2024-06-27 17:56:47,427 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) [2024-06-27 17:56:47,427 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 17:56:47,427 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] [2024-06-27 17:56:47,428 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2024-06-27 17:56:47,428 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)] === [2024-06-27 17:56:47,428 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 17:56:47,428 INFO L85 PathProgramCache]: Analyzing trace with hash -1753998635, now seen corresponding path program 2 times [2024-06-27 17:56:47,428 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 17:56:47,429 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [884594204] [2024-06-27 17:56:47,429 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 17:56:47,429 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 17:56:47,445 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 17:56:47,545 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 17:56:47,546 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 17:56:47,546 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [884594204] [2024-06-27 17:56:47,546 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [884594204] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 17:56:47,546 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 17:56:47,546 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-27 17:56:47,546 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2017145158] [2024-06-27 17:56:47,546 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 17:56:47,547 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-06-27 17:56:47,547 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 17:56:47,547 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-06-27 17:56:47,547 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-06-27 17:56:47,565 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 18 out of 34 [2024-06-27 17:56:47,565 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 66 places, 35 transitions, 137 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) [2024-06-27 17:56:47,565 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 17:56:47,566 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 18 of 34 [2024-06-27 17:56:47,566 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 17:56:47,634 INFO L124 PetriNetUnfolderBase]: 70/221 cut-off events. [2024-06-27 17:56:47,634 INFO L125 PetriNetUnfolderBase]: For 48/48 co-relation queries the response was YES. [2024-06-27 17:56:47,635 INFO L83 FinitePrefix]: Finished finitePrefix Result has 519 conditions, 221 events. 70/221 cut-off events. For 48/48 co-relation queries the response was YES. Maximal size of possible extension queue 22. Compared 1003 event pairs, 14 based on Foata normal form. 12/209 useless extension candidates. Maximal degree in co-relation 511. Up to 90 conditions per place. [2024-06-27 17:56:47,635 INFO L140 encePairwiseOnDemand]: 30/34 looper letters, 0 selfloop transitions, 0 changer transitions 39/39 dead transitions. [2024-06-27 17:56:47,635 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 54 places, 39 transitions, 185 flow [2024-06-27 17:56:47,636 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-06-27 17:56:47,636 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-06-27 17:56:47,636 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 110 transitions. [2024-06-27 17:56:47,636 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6470588235294118 [2024-06-27 17:56:47,637 INFO L175 Difference]: Start difference. First operand has 66 places, 35 transitions, 137 flow. Second operand 5 states and 110 transitions. [2024-06-27 17:56:47,637 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 54 places, 39 transitions, 185 flow [2024-06-27 17:56:47,637 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 47 places, 39 transitions, 163 flow, removed 2 selfloop flow, removed 7 redundant places. [2024-06-27 17:56:47,638 INFO L231 Difference]: Finished difference. Result has 47 places, 0 transitions, 0 flow [2024-06-27 17:56:47,638 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} [2024-06-27 17:56:47,638 INFO L281 CegarLoopForPetriNet]: 36 programPoint places, 11 predicate places. [2024-06-27 17:56:47,638 INFO L495 AbstractCegarLoop]: Abstraction has has 47 places, 0 transitions, 0 flow [2024-06-27 17:56:47,639 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) [2024-06-27 17:56:47,644 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT (4 of 5 remaining) [2024-06-27 17:56:47,644 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (3 of 5 remaining) [2024-06-27 17:56:47,644 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (2 of 5 remaining) [2024-06-27 17:56:47,645 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 5 remaining) [2024-06-27 17:56:47,645 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 5 remaining) [2024-06-27 17:56:47,645 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2024-06-27 17:56:47,646 INFO L445 BasicCegarLoop]: Path program histogram: [5, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 17:56:47,649 INFO L229 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2024-06-27 17:56:47,649 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2024-06-27 17:56:47,652 INFO L507 ceAbstractionStarter]: Automizer considered 2 witness invariants [2024-06-27 17:56:47,653 INFO L508 ceAbstractionStarter]: WitnessConsidered=2 [2024-06-27 17:56:47,653 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 27.06 05:56:47 BasicIcfg [2024-06-27 17:56:47,654 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2024-06-27 17:56:47,654 INFO L158 Benchmark]: Toolchain (without parser) took 7780.11ms. Allocated memory was 163.6MB in the beginning and 343.9MB in the end (delta: 180.4MB). Free memory was 115.0MB in the beginning and 296.4MB in the end (delta: -181.5MB). Peak memory consumption was 1.4MB. Max. memory is 16.1GB. [2024-06-27 17:56:47,654 INFO L158 Benchmark]: Witness Parser took 0.19ms. Allocated memory is still 163.6MB. Free memory is still 129.0MB. There was no memory consumed. Max. memory is 16.1GB. [2024-06-27 17:56:47,655 INFO L158 Benchmark]: CDTParser took 0.17ms. Allocated memory is still 163.6MB. Free memory is still 126.0MB. There was no memory consumed. Max. memory is 16.1GB. [2024-06-27 17:56:47,655 INFO L158 Benchmark]: CACSL2BoogieTranslator took 576.28ms. Allocated memory is still 163.6MB. Free memory was 115.0MB in the beginning and 89.1MB in the end (delta: 25.8MB). Peak memory consumption was 25.2MB. Max. memory is 16.1GB. [2024-06-27 17:56:47,655 INFO L158 Benchmark]: Boogie Procedure Inliner took 41.23ms. Allocated memory is still 163.6MB. Free memory was 89.1MB in the beginning and 87.1MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2024-06-27 17:56:47,655 INFO L158 Benchmark]: Boogie Preprocessor took 47.52ms. Allocated memory is still 163.6MB. Free memory was 87.1MB in the beginning and 85.6MB in the end (delta: 1.5MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2024-06-27 17:56:47,656 INFO L158 Benchmark]: RCFGBuilder took 464.09ms. Allocated memory is still 163.6MB. Free memory was 85.0MB in the beginning and 66.7MB in the end (delta: 18.2MB). Peak memory consumption was 18.9MB. Max. memory is 16.1GB. [2024-06-27 17:56:47,656 INFO L158 Benchmark]: TraceAbstraction took 6645.30ms. Allocated memory was 163.6MB in the beginning and 343.9MB in the end (delta: 180.4MB). Free memory was 66.1MB in the beginning and 296.4MB in the end (delta: -230.3MB). There was no memory consumed. Max. memory is 16.1GB. [2024-06-27 17:56:47,657 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * Witness Parser took 0.19ms. Allocated memory is still 163.6MB. Free memory is still 129.0MB. There was no memory consumed. Max. memory is 16.1GB. * CDTParser took 0.17ms. Allocated memory is still 163.6MB. Free memory is still 126.0MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 576.28ms. Allocated memory is still 163.6MB. Free memory was 115.0MB in the beginning and 89.1MB in the end (delta: 25.8MB). Peak memory consumption was 25.2MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 41.23ms. Allocated memory is still 163.6MB. Free memory was 89.1MB in the beginning and 87.1MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 47.52ms. Allocated memory is still 163.6MB. Free memory was 87.1MB in the beginning and 85.6MB in the end (delta: 1.5MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 464.09ms. Allocated memory is still 163.6MB. Free memory was 85.0MB in the beginning and 66.7MB in the end (delta: 18.2MB). Peak memory consumption was 18.9MB. Max. memory is 16.1GB. * TraceAbstraction took 6645.30ms. Allocated memory was 163.6MB in the beginning and 343.9MB in the end (delta: 180.4MB). Free memory was 66.1MB in the beginning and 296.4MB in the end (delta: -230.3MB). 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: 6.5s, OverallIterations: 27, TraceHistogramMax: 1, PathProgramHistogramMax: 5, EmptinessCheckTime: 0.0s, AutomataDifference: 4.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.1s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 1102 SdHoareTripleChecker+Valid, 1.8s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 783 mSDsluCounter, 413 SdHoareTripleChecker+Invalid, 1.4s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 269 mSDsCounter, 94 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 2913 IncrementalHoareTripleChecker+Invalid, 3007 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 94 mSolverCounterUnsat, 144 mSDtfsCounter, 2913 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, 1577 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! [2024-06-27 17:56:47,682 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: TRUE