./Ultimate.py --spec ../../../trunk/examples/svcomp/properties/unreach-call.prp --file ../../../trunk/examples/svcomp/weaver/array-eq-trans.wvr.c --full-output --witness-type correctness_witness --witnessparser.only.consider.loop.invariants false --cacsl2boogietranslator.check.unreachability.of.reach_error.function false --validate ./goblint.2024-06-19_11-23-25.files/mutex-meet-nonrel/array-eq-trans.wvr.yml/witness.yml --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version eb4cb34f Calling Ultimate with: /root/.sdkman/candidates/java/current/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReachWitnessValidation.xml -i ../../../trunk/examples/svcomp/weaver/array-eq-trans.wvr.c ./goblint.2024-06-19_11-23-25.files/mutex-meet-nonrel/array-eq-trans.wvr.yml/witness.yml -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --traceabstraction.compute.hoare.annotation.of.negated.interpolant.automaton,.abstraction.and.cfg false --witnessparser.only.consider.loop.invariants false --cacsl2boogietranslator.check.unreachability.of.reach_error.function false --- Real Ultimate output --- This is Ultimate 0.2.4-tmp.fs.goblint-validation-eb4cb34-m [2024-06-21 20:26:41,283 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-06-21 20:26:41,360 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-06-21 20:26:41,366 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-06-21 20:26:41,366 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-06-21 20:26:41,395 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-06-21 20:26:41,396 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-06-21 20:26:41,396 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-06-21 20:26:41,397 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-06-21 20:26:41,397 INFO L153 SettingsManager]: * Use memory slicer=true [2024-06-21 20:26:41,397 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-06-21 20:26:41,398 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-06-21 20:26:41,398 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-06-21 20:26:41,399 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-06-21 20:26:41,399 INFO L153 SettingsManager]: * Use SBE=true [2024-06-21 20:26:41,399 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-06-21 20:26:41,399 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-06-21 20:26:41,400 INFO L153 SettingsManager]: * sizeof long=4 [2024-06-21 20:26:41,400 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-06-21 20:26:41,400 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-06-21 20:26:41,401 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-06-21 20:26:41,403 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-06-21 20:26:41,403 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-06-21 20:26:41,403 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-06-21 20:26:41,403 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-06-21 20:26:41,403 INFO L153 SettingsManager]: * sizeof long double=12 [2024-06-21 20:26:41,404 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-06-21 20:26:41,404 INFO L153 SettingsManager]: * Use constant arrays=true [2024-06-21 20:26:41,404 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-06-21 20:26:41,404 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-06-21 20:26:41,405 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-06-21 20:26:41,405 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-06-21 20:26:41,405 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-06-21 20:26:41,405 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-06-21 20:26:41,405 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-06-21 20:26:41,406 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-06-21 20:26:41,406 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-06-21 20:26:41,406 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-06-21 20:26:41,406 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-06-21 20:26:41,407 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-06-21 20:26:41,407 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2024-06-21 20:26:41,407 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-06-21 20:26:41,407 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-06-21 20:26:41,408 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessparser: Only consider loop invariants -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Check unreachability of reach_error function -> false [2024-06-21 20:26:41,552 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-06-21 20:26:41,585 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-06-21 20:26:41,587 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-06-21 20:26:41,588 INFO L270 PluginConnector]: Initializing CDTParser... [2024-06-21 20:26:41,589 INFO L274 PluginConnector]: CDTParser initialized [2024-06-21 20:26:41,590 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/weaver/array-eq-trans.wvr.c [2024-06-21 20:26:42,680 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-06-21 20:26:42,855 INFO L384 CDTParser]: Found 1 translation units. [2024-06-21 20:26:42,856 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/weaver/array-eq-trans.wvr.c [2024-06-21 20:26:42,861 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/4351ac50c/3d7c49add24b408faa5d4ddd39ce6db5/FLAGb5df28af6 [2024-06-21 20:26:42,876 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/4351ac50c/3d7c49add24b408faa5d4ddd39ce6db5 [2024-06-21 20:26:42,879 INFO L270 PluginConnector]: Initializing Witness Parser... [2024-06-21 20:26:42,880 INFO L274 PluginConnector]: Witness Parser initialized [2024-06-21 20:26:42,880 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/./goblint.2024-06-19_11-23-25.files/mutex-meet-nonrel/array-eq-trans.wvr.yml/witness.yml [2024-06-21 20:26:42,961 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-06-21 20:26:42,962 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2024-06-21 20:26:42,964 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-06-21 20:26:42,964 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-06-21 20:26:42,967 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-06-21 20:26:42,968 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.06 08:26:42" (1/2) ... [2024-06-21 20:26:42,968 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@394a3a63 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.06 08:26:42, skipping insertion in model container [2024-06-21 20:26:42,969 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.06 08:26:42" (1/2) ... [2024-06-21 20:26:42,970 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@4b2e1b67 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.06 08:26:42, skipping insertion in model container [2024-06-21 20:26:42,970 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 21.06 08:26:42" (2/2) ... [2024-06-21 20:26:42,970 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@394a3a63 and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 21.06 08:26:42, skipping insertion in model container [2024-06-21 20:26:42,971 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 21.06 08:26:42" (2/2) ... [2024-06-21 20:26:42,971 INFO L83 nessWitnessExtractor]: Extracting all invariants from correctness witness [2024-06-21 20:26:42,990 INFO L95 edCorrectnessWitness]: Found the following entries in the witness: [2024-06-21 20:26:42,991 INFO L97 edCorrectnessWitness]: Location invariant before [L93-L93] ((! multithreaded || 0 <= i_BC) && (! multithreaded || 0 <= i_AB)) && (! multithreaded || 0 <= i_AC) [2024-06-21 20:26:42,991 INFO L97 edCorrectnessWitness]: Location invariant before [L95-L95] ((! multithreaded || 0 <= i_BC) && (! multithreaded || 0 <= i_AB)) && (! multithreaded || 0 <= i_AC) [2024-06-21 20:26:42,991 INFO L97 edCorrectnessWitness]: Location invariant before [L94-L94] ((! multithreaded || 0 <= i_BC) && (! multithreaded || 0 <= i_AB)) && (! multithreaded || 0 <= i_AC) [2024-06-21 20:26:42,991 INFO L103 edCorrectnessWitness]: ghost_variable multithreaded = 0 [2024-06-21 20:26:42,991 INFO L106 edCorrectnessWitness]: ghost_update [L92-L92] multithreaded = 1; [2024-06-21 20:26:43,008 INFO L177 MainTranslator]: Built tables and reachable declarations [2024-06-21 20:26:43,181 INFO L207 PostProcessor]: Analyzing one entry point: main [2024-06-21 20:26:43,188 INFO L202 MainTranslator]: Completed pre-run Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local [2024-06-21 20:26:43,242 INFO L207 PostProcessor]: Analyzing one entry point: main [2024-06-21 20:26:43,259 INFO L206 MainTranslator]: Completed translation [2024-06-21 20:26:43,261 INFO L201 PluginConnector]: Adding new model witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 21.06 08:26:43 WrapperNode [2024-06-21 20:26:43,261 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-06-21 20:26:43,262 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-06-21 20:26:43,262 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-06-21 20:26:43,262 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-06-21 20:26:43,267 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 21.06 08:26:43" (1/1) ... [2024-06-21 20:26:43,283 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 21.06 08:26:43" (1/1) ... [2024-06-21 20:26:43,302 INFO L138 Inliner]: procedures = 23, calls = 32, calls flagged for inlining = 11, calls inlined = 15, statements flattened = 202 [2024-06-21 20:26:43,302 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-06-21 20:26:43,303 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-06-21 20:26:43,303 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-06-21 20:26:43,303 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-06-21 20:26:43,312 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 21.06 08:26:43" (1/1) ... [2024-06-21 20:26:43,312 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 21.06 08:26:43" (1/1) ... [2024-06-21 20:26:43,326 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 21.06 08:26:43" (1/1) ... [2024-06-21 20:26:43,339 INFO L175 MemorySlicer]: Split 17 memory accesses to 2 slices as follows [2, 15]. 88 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2, 0]. The 3 writes are split as follows [0, 3]. [2024-06-21 20:26:43,339 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 21.06 08:26:43" (1/1) ... [2024-06-21 20:26:43,341 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 21.06 08:26:43" (1/1) ... [2024-06-21 20:26:43,348 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 21.06 08:26:43" (1/1) ... [2024-06-21 20:26:43,352 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 21.06 08:26:43" (1/1) ... [2024-06-21 20:26:43,353 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 21.06 08:26:43" (1/1) ... [2024-06-21 20:26:43,354 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 21.06 08:26:43" (1/1) ... [2024-06-21 20:26:43,357 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-06-21 20:26:43,357 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-06-21 20:26:43,358 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-06-21 20:26:43,358 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-06-21 20:26:43,358 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 21.06 08:26:43" (1/1) ... [2024-06-21 20:26:43,364 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-06-21 20:26:43,370 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-06-21 20:26:43,396 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-06-21 20:26:43,401 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-06-21 20:26:43,420 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-06-21 20:26:43,421 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2024-06-21 20:26:43,421 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2024-06-21 20:26:43,421 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2024-06-21 20:26:43,421 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2024-06-21 20:26:43,421 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2024-06-21 20:26:43,421 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2024-06-21 20:26:43,421 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-06-21 20:26:43,422 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-06-21 20:26:43,422 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-06-21 20:26:43,422 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2024-06-21 20:26:43,422 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2024-06-21 20:26:43,422 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-06-21 20:26:43,422 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-06-21 20:26:43,422 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2024-06-21 20:26:43,422 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2024-06-21 20:26:43,424 WARN L214 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2024-06-21 20:26:43,507 INFO L244 CfgBuilder]: Building ICFG [2024-06-21 20:26:43,509 INFO L270 CfgBuilder]: Building CFG for each procedure with an implementation [2024-06-21 20:26:43,812 INFO L289 CfgBuilder]: Ommited future-live optimization because the input is a concurrent program. [2024-06-21 20:26:43,812 INFO L293 CfgBuilder]: Performing block encoding [2024-06-21 20:26:44,147 INFO L315 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-06-21 20:26:44,147 INFO L320 CfgBuilder]: Removed 6 assume(true) statements. [2024-06-21 20:26:44,148 INFO L201 PluginConnector]: Adding new model witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.06 08:26:44 BoogieIcfgContainer [2024-06-21 20:26:44,148 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-06-21 20:26:44,150 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-06-21 20:26:44,150 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-06-21 20:26:44,152 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-06-21 20:26:44,152 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.06 08:26:42" (1/4) ... [2024-06-21 20:26:44,153 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5bde8d42 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.06 08:26:44, skipping insertion in model container [2024-06-21 20:26:44,153 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 21.06 08:26:42" (2/4) ... [2024-06-21 20:26:44,153 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5bde8d42 and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CORRECTNESS_WITNESS 21.06 08:26:44, skipping insertion in model container [2024-06-21 20:26:44,154 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 21.06 08:26:43" (3/4) ... [2024-06-21 20:26:44,154 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5bde8d42 and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CORRECTNESS_WITNESS 21.06 08:26:44, skipping insertion in model container [2024-06-21 20:26:44,155 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.06 08:26:44" (4/4) ... [2024-06-21 20:26:44,155 INFO L112 eAbstractionObserver]: Analyzing ICFG array-eq-trans.wvr.c [2024-06-21 20:26:44,168 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-06-21 20:26:44,168 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 3 error locations. [2024-06-21 20:26:44,168 INFO L522 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-06-21 20:26:44,207 INFO L144 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2024-06-21 20:26:44,237 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 46 places, 45 transitions, 111 flow [2024-06-21 20:26:44,266 INFO L124 PetriNetUnfolderBase]: 9/42 cut-off events. [2024-06-21 20:26:44,266 INFO L125 PetriNetUnfolderBase]: For 3/3 co-relation queries the response was YES. [2024-06-21 20:26:44,269 INFO L83 FinitePrefix]: Finished finitePrefix Result has 55 conditions, 42 events. 9/42 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 51 event pairs, 0 based on Foata normal form. 0/30 useless extension candidates. Maximal degree in co-relation 33. Up to 2 conditions per place. [2024-06-21 20:26:44,269 INFO L82 GeneralOperation]: Start removeDead. Operand has 46 places, 45 transitions, 111 flow [2024-06-21 20:26:44,273 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 41 places, 40 transitions, 95 flow [2024-06-21 20:26:44,282 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-06-21 20:26:44,287 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;@fadfbab, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-06-21 20:26:44,288 INFO L358 AbstractCegarLoop]: Starting to check reachability of 6 error locations. [2024-06-21 20:26:44,298 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-06-21 20:26:44,298 INFO L124 PetriNetUnfolderBase]: 5/15 cut-off events. [2024-06-21 20:26:44,298 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-06-21 20:26:44,299 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 20:26:44,299 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 20:26:44,300 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-21 20:26:44,306 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 20:26:44,306 INFO L85 PathProgramCache]: Analyzing trace with hash 328637942, now seen corresponding path program 1 times [2024-06-21 20:26:44,313 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 20:26:44,313 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1991550623] [2024-06-21 20:26:44,313 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 20:26:44,314 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 20:26:44,407 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 20:26:44,620 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 20:26:44,621 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 20:26:44,621 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1991550623] [2024-06-21 20:26:44,622 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1991550623] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 20:26:44,622 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 20:26:44,622 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-06-21 20:26:44,623 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [491110842] [2024-06-21 20:26:44,624 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 20:26:44,630 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-06-21 20:26:44,633 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 20:26:44,654 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-06-21 20:26:44,655 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-06-21 20:26:44,663 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 45 [2024-06-21 20:26:44,665 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 41 places, 40 transitions, 95 flow. Second operand has 3 states, 3 states have (on average 10.333333333333334) internal successors, (31), 3 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 20:26:44,665 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 20:26:44,665 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 45 [2024-06-21 20:26:44,666 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 20:26:45,103 INFO L124 PetriNetUnfolderBase]: 2394/3190 cut-off events. [2024-06-21 20:26:45,104 INFO L125 PetriNetUnfolderBase]: For 138/138 co-relation queries the response was YES. [2024-06-21 20:26:45,110 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6463 conditions, 3190 events. 2394/3190 cut-off events. For 138/138 co-relation queries the response was YES. Maximal size of possible extension queue 189. Compared 13682 event pairs, 431 based on Foata normal form. 64/2139 useless extension candidates. Maximal degree in co-relation 6045. Up to 2441 conditions per place. [2024-06-21 20:26:45,122 INFO L140 encePairwiseOnDemand]: 38/45 looper letters, 51 selfloop transitions, 4 changer transitions 4/64 dead transitions. [2024-06-21 20:26:45,122 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 43 places, 64 transitions, 273 flow [2024-06-21 20:26:45,123 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-06-21 20:26:45,125 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-06-21 20:26:45,131 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 86 transitions. [2024-06-21 20:26:45,132 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6370370370370371 [2024-06-21 20:26:45,133 INFO L175 Difference]: Start difference. First operand has 41 places, 40 transitions, 95 flow. Second operand 3 states and 86 transitions. [2024-06-21 20:26:45,134 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 43 places, 64 transitions, 273 flow [2024-06-21 20:26:45,138 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 38 places, 64 transitions, 257 flow, removed 0 selfloop flow, removed 5 redundant places. [2024-06-21 20:26:45,142 INFO L231 Difference]: Finished difference. Result has 39 places, 41 transitions, 110 flow [2024-06-21 20:26:45,143 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=45, PETRI_DIFFERENCE_MINUEND_FLOW=86, PETRI_DIFFERENCE_MINUEND_PLACES=36, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=40, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=36, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=110, PETRI_PLACES=39, PETRI_TRANSITIONS=41} [2024-06-21 20:26:45,145 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, -2 predicate places. [2024-06-21 20:26:45,146 INFO L495 AbstractCegarLoop]: Abstraction has has 39 places, 41 transitions, 110 flow [2024-06-21 20:26:45,146 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 10.333333333333334) internal successors, (31), 3 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 20:26:45,146 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 20:26:45,146 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 20:26:45,146 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-06-21 20:26:45,147 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-21 20:26:45,147 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 20:26:45,147 INFO L85 PathProgramCache]: Analyzing trace with hash -2064021024, now seen corresponding path program 1 times [2024-06-21 20:26:45,147 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 20:26:45,148 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1689094443] [2024-06-21 20:26:45,148 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 20:26:45,148 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 20:26:45,178 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 20:26:45,303 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 20:26:45,303 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 20:26:45,303 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1689094443] [2024-06-21 20:26:45,304 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1689094443] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 20:26:45,304 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 20:26:45,304 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-06-21 20:26:45,304 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1519934815] [2024-06-21 20:26:45,304 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 20:26:45,306 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-06-21 20:26:45,306 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 20:26:45,306 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-06-21 20:26:45,307 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-06-21 20:26:45,316 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 45 [2024-06-21 20:26:45,317 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 39 places, 41 transitions, 110 flow. Second operand has 4 states, 4 states have (on average 10.25) internal successors, (41), 4 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 20:26:45,317 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 20:26:45,317 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 45 [2024-06-21 20:26:45,317 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 20:26:45,549 INFO L124 PetriNetUnfolderBase]: 2692/3582 cut-off events. [2024-06-21 20:26:45,550 INFO L125 PetriNetUnfolderBase]: For 383/383 co-relation queries the response was YES. [2024-06-21 20:26:45,553 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7979 conditions, 3582 events. 2692/3582 cut-off events. For 383/383 co-relation queries the response was YES. Maximal size of possible extension queue 216. Compared 15724 event pairs, 401 based on Foata normal form. 84/2951 useless extension candidates. Maximal degree in co-relation 1796. Up to 2179 conditions per place. [2024-06-21 20:26:45,564 INFO L140 encePairwiseOnDemand]: 38/45 looper letters, 67 selfloop transitions, 6 changer transitions 0/78 dead transitions. [2024-06-21 20:26:45,564 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 39 places, 78 transitions, 339 flow [2024-06-21 20:26:45,564 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-06-21 20:26:45,564 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-06-21 20:26:45,565 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 108 transitions. [2024-06-21 20:26:45,565 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6 [2024-06-21 20:26:45,566 INFO L175 Difference]: Start difference. First operand has 39 places, 41 transitions, 110 flow. Second operand 4 states and 108 transitions. [2024-06-21 20:26:45,566 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 39 places, 78 transitions, 339 flow [2024-06-21 20:26:45,567 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 38 places, 78 transitions, 335 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-06-21 20:26:45,567 INFO L231 Difference]: Finished difference. Result has 39 places, 42 transitions, 133 flow [2024-06-21 20:26:45,568 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=45, PETRI_DIFFERENCE_MINUEND_FLOW=102, PETRI_DIFFERENCE_MINUEND_PLACES=35, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=40, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=34, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=133, PETRI_PLACES=39, PETRI_TRANSITIONS=42} [2024-06-21 20:26:45,568 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, -2 predicate places. [2024-06-21 20:26:45,568 INFO L495 AbstractCegarLoop]: Abstraction has has 39 places, 42 transitions, 133 flow [2024-06-21 20:26:45,569 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 10.25) internal successors, (41), 4 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 20:26:45,569 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 20:26:45,569 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 20:26:45,569 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-06-21 20:26:45,569 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-21 20:26:45,570 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 20:26:45,570 INFO L85 PathProgramCache]: Analyzing trace with hash 430103479, now seen corresponding path program 1 times [2024-06-21 20:26:45,570 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 20:26:45,570 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [665716074] [2024-06-21 20:26:45,570 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 20:26:45,570 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 20:26:45,579 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 20:26:45,657 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 20:26:45,658 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 20:26:45,658 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [665716074] [2024-06-21 20:26:45,658 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [665716074] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 20:26:45,658 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 20:26:45,658 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-06-21 20:26:45,659 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [984047542] [2024-06-21 20:26:45,659 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 20:26:45,659 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-06-21 20:26:45,659 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 20:26:45,660 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-06-21 20:26:45,660 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-06-21 20:26:45,664 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 45 [2024-06-21 20:26:45,665 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 39 places, 42 transitions, 133 flow. Second operand has 4 states, 4 states have (on average 11.0) internal successors, (44), 4 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 20:26:45,665 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 20:26:45,665 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 45 [2024-06-21 20:26:45,666 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 20:26:45,932 INFO L124 PetriNetUnfolderBase]: 3117/4155 cut-off events. [2024-06-21 20:26:45,933 INFO L125 PetriNetUnfolderBase]: For 1487/1487 co-relation queries the response was YES. [2024-06-21 20:26:45,937 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9779 conditions, 4155 events. 3117/4155 cut-off events. For 1487/1487 co-relation queries the response was YES. Maximal size of possible extension queue 258. Compared 18532 event pairs, 505 based on Foata normal form. 80/3447 useless extension candidates. Maximal degree in co-relation 4001. Up to 2782 conditions per place. [2024-06-21 20:26:45,949 INFO L140 encePairwiseOnDemand]: 39/45 looper letters, 69 selfloop transitions, 6 changer transitions 0/80 dead transitions. [2024-06-21 20:26:45,949 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 42 places, 80 transitions, 374 flow [2024-06-21 20:26:45,949 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-06-21 20:26:45,950 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-06-21 20:26:45,950 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 107 transitions. [2024-06-21 20:26:45,950 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5944444444444444 [2024-06-21 20:26:45,951 INFO L175 Difference]: Start difference. First operand has 39 places, 42 transitions, 133 flow. Second operand 4 states and 107 transitions. [2024-06-21 20:26:45,951 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 42 places, 80 transitions, 374 flow [2024-06-21 20:26:45,952 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 40 places, 80 transitions, 365 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-06-21 20:26:45,953 INFO L231 Difference]: Finished difference. Result has 41 places, 44 transitions, 157 flow [2024-06-21 20:26:45,953 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=45, PETRI_DIFFERENCE_MINUEND_FLOW=124, PETRI_DIFFERENCE_MINUEND_PLACES=37, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=42, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=36, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=157, PETRI_PLACES=41, PETRI_TRANSITIONS=44} [2024-06-21 20:26:45,954 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 0 predicate places. [2024-06-21 20:26:45,954 INFO L495 AbstractCegarLoop]: Abstraction has has 41 places, 44 transitions, 157 flow [2024-06-21 20:26:45,954 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 11.0) internal successors, (44), 4 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 20:26:45,954 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 20:26:45,955 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 20:26:45,955 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-06-21 20:26:45,955 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-21 20:26:45,955 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 20:26:45,955 INFO L85 PathProgramCache]: Analyzing trace with hash 1849328863, now seen corresponding path program 1 times [2024-06-21 20:26:45,956 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 20:26:45,956 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [141653567] [2024-06-21 20:26:45,956 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 20:26:45,956 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 20:26:45,968 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 20:26:46,012 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 20:26:46,013 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 20:26:46,013 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [141653567] [2024-06-21 20:26:46,013 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [141653567] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 20:26:46,013 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 20:26:46,013 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-06-21 20:26:46,013 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1743236302] [2024-06-21 20:26:46,014 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 20:26:46,014 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-06-21 20:26:46,014 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 20:26:46,015 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-06-21 20:26:46,015 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-06-21 20:26:46,022 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 45 [2024-06-21 20:26:46,023 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 41 places, 44 transitions, 157 flow. Second operand has 4 states, 4 states have (on average 14.25) internal successors, (57), 4 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 20:26:46,023 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 20:26:46,023 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 45 [2024-06-21 20:26:46,023 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 20:26:46,366 INFO L124 PetriNetUnfolderBase]: 3998/5716 cut-off events. [2024-06-21 20:26:46,366 INFO L125 PetriNetUnfolderBase]: For 2772/2891 co-relation queries the response was YES. [2024-06-21 20:26:46,374 INFO L83 FinitePrefix]: Finished finitePrefix Result has 13583 conditions, 5716 events. 3998/5716 cut-off events. For 2772/2891 co-relation queries the response was YES. Maximal size of possible extension queue 368. Compared 30166 event pairs, 2268 based on Foata normal form. 0/4753 useless extension candidates. Maximal degree in co-relation 7351. Up to 3828 conditions per place. [2024-06-21 20:26:46,395 INFO L140 encePairwiseOnDemand]: 37/45 looper letters, 63 selfloop transitions, 7 changer transitions 0/77 dead transitions. [2024-06-21 20:26:46,395 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 45 places, 77 transitions, 393 flow [2024-06-21 20:26:46,396 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-06-21 20:26:46,396 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-06-21 20:26:46,396 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 116 transitions. [2024-06-21 20:26:46,397 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5155555555555555 [2024-06-21 20:26:46,397 INFO L175 Difference]: Start difference. First operand has 41 places, 44 transitions, 157 flow. Second operand 5 states and 116 transitions. [2024-06-21 20:26:46,397 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 45 places, 77 transitions, 393 flow [2024-06-21 20:26:46,401 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 43 places, 77 transitions, 380 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-06-21 20:26:46,401 INFO L231 Difference]: Finished difference. Result has 46 places, 50 transitions, 200 flow [2024-06-21 20:26:46,402 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=45, PETRI_DIFFERENCE_MINUEND_FLOW=148, PETRI_DIFFERENCE_MINUEND_PLACES=39, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=44, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=37, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=200, PETRI_PLACES=46, PETRI_TRANSITIONS=50} [2024-06-21 20:26:46,402 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 5 predicate places. [2024-06-21 20:26:46,402 INFO L495 AbstractCegarLoop]: Abstraction has has 46 places, 50 transitions, 200 flow [2024-06-21 20:26:46,403 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 14.25) internal successors, (57), 4 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 20:26:46,403 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 20:26:46,403 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 20:26:46,403 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-06-21 20:26:46,403 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-21 20:26:46,404 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 20:26:46,404 INFO L85 PathProgramCache]: Analyzing trace with hash 1969181613, now seen corresponding path program 1 times [2024-06-21 20:26:46,404 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 20:26:46,404 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1808651107] [2024-06-21 20:26:46,404 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 20:26:46,405 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 20:26:46,414 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 20:26:46,475 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 20:26:46,475 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 20:26:46,475 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1808651107] [2024-06-21 20:26:46,475 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1808651107] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 20:26:46,475 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 20:26:46,475 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-06-21 20:26:46,476 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1317526456] [2024-06-21 20:26:46,476 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 20:26:46,476 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-06-21 20:26:46,476 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 20:26:46,477 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-06-21 20:26:46,477 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-06-21 20:26:46,480 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 45 [2024-06-21 20:26:46,481 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 46 places, 50 transitions, 200 flow. Second operand has 4 states, 4 states have (on average 11.75) internal successors, (47), 4 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 20:26:46,481 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 20:26:46,481 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 45 [2024-06-21 20:26:46,481 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 20:26:46,836 INFO L124 PetriNetUnfolderBase]: 4799/6525 cut-off events. [2024-06-21 20:26:46,836 INFO L125 PetriNetUnfolderBase]: For 3580/3580 co-relation queries the response was YES. [2024-06-21 20:26:46,843 INFO L83 FinitePrefix]: Finished finitePrefix Result has 16035 conditions, 6525 events. 4799/6525 cut-off events. For 3580/3580 co-relation queries the response was YES. Maximal size of possible extension queue 359. Compared 31942 event pairs, 1032 based on Foata normal form. 112/5850 useless extension candidates. Maximal degree in co-relation 11541. Up to 4489 conditions per place. [2024-06-21 20:26:46,858 INFO L140 encePairwiseOnDemand]: 40/45 looper letters, 74 selfloop transitions, 6 changer transitions 0/85 dead transitions. [2024-06-21 20:26:46,859 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 49 places, 85 transitions, 451 flow [2024-06-21 20:26:46,859 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-06-21 20:26:46,859 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-06-21 20:26:46,860 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 103 transitions. [2024-06-21 20:26:46,860 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5722222222222222 [2024-06-21 20:26:46,860 INFO L175 Difference]: Start difference. First operand has 46 places, 50 transitions, 200 flow. Second operand 4 states and 103 transitions. [2024-06-21 20:26:46,860 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 49 places, 85 transitions, 451 flow [2024-06-21 20:26:46,864 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 48 places, 85 transitions, 447 flow, removed 1 selfloop flow, removed 1 redundant places. [2024-06-21 20:26:46,865 INFO L231 Difference]: Finished difference. Result has 49 places, 52 transitions, 229 flow [2024-06-21 20:26:46,865 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=45, PETRI_DIFFERENCE_MINUEND_FLOW=196, PETRI_DIFFERENCE_MINUEND_PLACES=45, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=50, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=44, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=229, PETRI_PLACES=49, PETRI_TRANSITIONS=52} [2024-06-21 20:26:46,866 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 8 predicate places. [2024-06-21 20:26:46,866 INFO L495 AbstractCegarLoop]: Abstraction has has 49 places, 52 transitions, 229 flow [2024-06-21 20:26:46,866 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 11.75) internal successors, (47), 4 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 20:26:46,866 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 20:26:46,866 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 20:26:46,866 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-06-21 20:26:46,866 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-21 20:26:46,867 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 20:26:46,867 INFO L85 PathProgramCache]: Analyzing trace with hash -1968759662, now seen corresponding path program 1 times [2024-06-21 20:26:46,867 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 20:26:46,867 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [622241806] [2024-06-21 20:26:46,867 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 20:26:46,867 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 20:26:46,877 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 20:26:46,930 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-06-21 20:26:46,930 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 20:26:46,930 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [622241806] [2024-06-21 20:26:46,931 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [622241806] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 20:26:46,931 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 20:26:46,931 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-06-21 20:26:46,931 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [49215328] [2024-06-21 20:26:46,931 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 20:26:46,931 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-06-21 20:26:46,932 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 20:26:46,932 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-06-21 20:26:46,932 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-06-21 20:26:46,945 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 45 [2024-06-21 20:26:46,946 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 49 places, 52 transitions, 229 flow. Second operand has 5 states, 5 states have (on average 13.8) internal successors, (69), 5 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 20:26:46,946 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 20:26:46,946 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 45 [2024-06-21 20:26:46,946 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 20:26:47,608 INFO L124 PetriNetUnfolderBase]: 7492/10708 cut-off events. [2024-06-21 20:26:47,609 INFO L125 PetriNetUnfolderBase]: For 7354/7612 co-relation queries the response was YES. [2024-06-21 20:26:47,618 INFO L83 FinitePrefix]: Finished finitePrefix Result has 26859 conditions, 10708 events. 7492/10708 cut-off events. For 7354/7612 co-relation queries the response was YES. Maximal size of possible extension queue 592. Compared 61080 event pairs, 4019 based on Foata normal form. 167/9574 useless extension candidates. Maximal degree in co-relation 17782. Up to 4351 conditions per place. [2024-06-21 20:26:47,638 INFO L140 encePairwiseOnDemand]: 39/45 looper letters, 87 selfloop transitions, 10 changer transitions 0/104 dead transitions. [2024-06-21 20:26:47,638 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 53 places, 104 transitions, 606 flow [2024-06-21 20:26:47,639 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-06-21 20:26:47,639 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-06-21 20:26:47,639 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 132 transitions. [2024-06-21 20:26:47,639 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5866666666666667 [2024-06-21 20:26:47,640 INFO L175 Difference]: Start difference. First operand has 49 places, 52 transitions, 229 flow. Second operand 5 states and 132 transitions. [2024-06-21 20:26:47,640 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 53 places, 104 transitions, 606 flow [2024-06-21 20:26:47,644 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 51 places, 104 transitions, 593 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-06-21 20:26:47,660 INFO L231 Difference]: Finished difference. Result has 54 places, 55 transitions, 279 flow [2024-06-21 20:26:47,660 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=45, PETRI_DIFFERENCE_MINUEND_FLOW=220, PETRI_DIFFERENCE_MINUEND_PLACES=47, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=52, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=42, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=279, PETRI_PLACES=54, PETRI_TRANSITIONS=55} [2024-06-21 20:26:47,661 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 13 predicate places. [2024-06-21 20:26:47,661 INFO L495 AbstractCegarLoop]: Abstraction has has 54 places, 55 transitions, 279 flow [2024-06-21 20:26:47,661 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 13.8) internal successors, (69), 5 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 20:26:47,661 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 20:26:47,661 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 20:26:47,661 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-06-21 20:26:47,661 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-21 20:26:47,662 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 20:26:47,662 INFO L85 PathProgramCache]: Analyzing trace with hash 261821694, now seen corresponding path program 1 times [2024-06-21 20:26:47,662 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 20:26:47,662 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [677747185] [2024-06-21 20:26:47,662 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 20:26:47,662 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 20:26:47,674 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 20:26:47,723 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-06-21 20:26:47,724 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 20:26:47,724 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [677747185] [2024-06-21 20:26:47,724 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [677747185] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 20:26:47,724 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 20:26:47,724 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-06-21 20:26:47,724 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [479108043] [2024-06-21 20:26:47,725 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 20:26:47,725 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-06-21 20:26:47,725 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 20:26:47,725 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-06-21 20:26:47,726 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-06-21 20:26:47,738 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 45 [2024-06-21 20:26:47,738 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 54 places, 55 transitions, 279 flow. Second operand has 5 states, 5 states have (on average 14.0) internal successors, (70), 5 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 20:26:47,738 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 20:26:47,738 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 45 [2024-06-21 20:26:47,738 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 20:26:48,727 INFO L124 PetriNetUnfolderBase]: 10214/14729 cut-off events. [2024-06-21 20:26:48,727 INFO L125 PetriNetUnfolderBase]: For 10722/11068 co-relation queries the response was YES. [2024-06-21 20:26:48,743 INFO L83 FinitePrefix]: Finished finitePrefix Result has 37521 conditions, 14729 events. 10214/14729 cut-off events. For 10722/11068 co-relation queries the response was YES. Maximal size of possible extension queue 748. Compared 89552 event pairs, 4608 based on Foata normal form. 0/13169 useless extension candidates. Maximal degree in co-relation 26244. Up to 5789 conditions per place. [2024-06-21 20:26:48,831 INFO L140 encePairwiseOnDemand]: 39/45 looper letters, 81 selfloop transitions, 11 changer transitions 1/100 dead transitions. [2024-06-21 20:26:48,832 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 58 places, 100 transitions, 631 flow [2024-06-21 20:26:48,832 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-06-21 20:26:48,832 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-06-21 20:26:48,833 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 127 transitions. [2024-06-21 20:26:48,833 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5644444444444444 [2024-06-21 20:26:48,833 INFO L175 Difference]: Start difference. First operand has 54 places, 55 transitions, 279 flow. Second operand 5 states and 127 transitions. [2024-06-21 20:26:48,833 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 58 places, 100 transitions, 631 flow [2024-06-21 20:26:48,842 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 57 places, 100 transitions, 618 flow, removed 3 selfloop flow, removed 1 redundant places. [2024-06-21 20:26:48,843 INFO L231 Difference]: Finished difference. Result has 60 places, 57 transitions, 325 flow [2024-06-21 20:26:48,844 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=45, PETRI_DIFFERENCE_MINUEND_FLOW=268, PETRI_DIFFERENCE_MINUEND_PLACES=53, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=55, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=44, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=325, PETRI_PLACES=60, PETRI_TRANSITIONS=57} [2024-06-21 20:26:48,844 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 19 predicate places. [2024-06-21 20:26:48,844 INFO L495 AbstractCegarLoop]: Abstraction has has 60 places, 57 transitions, 325 flow [2024-06-21 20:26:48,844 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 14.0) internal successors, (70), 5 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 20:26:48,844 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 20:26:48,845 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] [2024-06-21 20:26:48,845 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-06-21 20:26:48,845 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-21 20:26:48,845 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 20:26:48,845 INFO L85 PathProgramCache]: Analyzing trace with hash -361808553, now seen corresponding path program 1 times [2024-06-21 20:26:48,846 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 20:26:48,846 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [884438804] [2024-06-21 20:26:48,846 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 20:26:48,846 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 20:26:48,858 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 20:26:48,929 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-06-21 20:26:48,930 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 20:26:48,930 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [884438804] [2024-06-21 20:26:48,930 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [884438804] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 20:26:48,930 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 20:26:48,930 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-06-21 20:26:48,930 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2034980820] [2024-06-21 20:26:48,931 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 20:26:48,931 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-06-21 20:26:48,931 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 20:26:48,931 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-06-21 20:26:48,931 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-06-21 20:26:48,937 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 45 [2024-06-21 20:26:48,937 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 60 places, 57 transitions, 325 flow. Second operand has 5 states, 5 states have (on average 11.4) internal successors, (57), 5 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 20:26:48,937 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 20:26:48,937 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 45 [2024-06-21 20:26:48,937 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 20:26:49,916 INFO L124 PetriNetUnfolderBase]: 10577/14712 cut-off events. [2024-06-21 20:26:49,917 INFO L125 PetriNetUnfolderBase]: For 15800/15800 co-relation queries the response was YES. [2024-06-21 20:26:49,935 INFO L83 FinitePrefix]: Finished finitePrefix Result has 40278 conditions, 14712 events. 10577/14712 cut-off events. For 15800/15800 co-relation queries the response was YES. Maximal size of possible extension queue 715. Compared 83614 event pairs, 2310 based on Foata normal form. 80/13968 useless extension candidates. Maximal degree in co-relation 30353. Up to 9859 conditions per place. [2024-06-21 20:26:49,969 INFO L140 encePairwiseOnDemand]: 39/45 looper letters, 94 selfloop transitions, 7 changer transitions 6/112 dead transitions. [2024-06-21 20:26:49,969 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 64 places, 112 transitions, 704 flow [2024-06-21 20:26:49,970 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-06-21 20:26:49,970 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-06-21 20:26:49,970 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 134 transitions. [2024-06-21 20:26:49,970 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5955555555555555 [2024-06-21 20:26:49,971 INFO L175 Difference]: Start difference. First operand has 60 places, 57 transitions, 325 flow. Second operand 5 states and 134 transitions. [2024-06-21 20:26:49,971 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 64 places, 112 transitions, 704 flow [2024-06-21 20:26:49,986 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 63 places, 112 transitions, 695 flow, removed 2 selfloop flow, removed 1 redundant places. [2024-06-21 20:26:49,987 INFO L231 Difference]: Finished difference. Result has 64 places, 58 transitions, 346 flow [2024-06-21 20:26:49,988 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=45, PETRI_DIFFERENCE_MINUEND_FLOW=316, PETRI_DIFFERENCE_MINUEND_PLACES=59, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=57, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=50, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=346, PETRI_PLACES=64, PETRI_TRANSITIONS=58} [2024-06-21 20:26:49,988 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 23 predicate places. [2024-06-21 20:26:49,988 INFO L495 AbstractCegarLoop]: Abstraction has has 64 places, 58 transitions, 346 flow [2024-06-21 20:26:49,989 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 11.4) internal successors, (57), 5 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 20:26:49,989 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 20:26:49,989 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] [2024-06-21 20:26:49,989 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-06-21 20:26:49,989 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-21 20:26:49,990 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 20:26:49,990 INFO L85 PathProgramCache]: Analyzing trace with hash -361802043, now seen corresponding path program 2 times [2024-06-21 20:26:49,990 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 20:26:49,990 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [750425212] [2024-06-21 20:26:49,990 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 20:26:49,991 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 20:26:50,003 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 20:26:50,111 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-06-21 20:26:50,112 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 20:26:50,112 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [750425212] [2024-06-21 20:26:50,112 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [750425212] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 20:26:50,112 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 20:26:50,112 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-06-21 20:26:50,112 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [768933169] [2024-06-21 20:26:50,112 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 20:26:50,113 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-06-21 20:26:50,113 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 20:26:50,114 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-06-21 20:26:50,114 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-06-21 20:26:50,119 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 45 [2024-06-21 20:26:50,119 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 64 places, 58 transitions, 346 flow. Second operand has 5 states, 5 states have (on average 11.4) internal successors, (57), 5 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 20:26:50,119 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 20:26:50,120 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 45 [2024-06-21 20:26:50,120 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 20:26:51,029 INFO L124 PetriNetUnfolderBase]: 10753/14952 cut-off events. [2024-06-21 20:26:51,029 INFO L125 PetriNetUnfolderBase]: For 21003/21003 co-relation queries the response was YES. [2024-06-21 20:26:51,047 INFO L83 FinitePrefix]: Finished finitePrefix Result has 41963 conditions, 14952 events. 10753/14952 cut-off events. For 21003/21003 co-relation queries the response was YES. Maximal size of possible extension queue 710. Compared 84194 event pairs, 2298 based on Foata normal form. 80/14224 useless extension candidates. Maximal degree in co-relation 31822. Up to 9227 conditions per place. [2024-06-21 20:26:51,075 INFO L140 encePairwiseOnDemand]: 39/45 looper letters, 91 selfloop transitions, 7 changer transitions 9/112 dead transitions. [2024-06-21 20:26:51,076 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 67 places, 112 transitions, 717 flow [2024-06-21 20:26:51,076 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-06-21 20:26:51,076 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-06-21 20:26:51,076 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 133 transitions. [2024-06-21 20:26:51,077 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5911111111111111 [2024-06-21 20:26:51,077 INFO L175 Difference]: Start difference. First operand has 64 places, 58 transitions, 346 flow. Second operand 5 states and 133 transitions. [2024-06-21 20:26:51,077 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 67 places, 112 transitions, 717 flow [2024-06-21 20:26:51,136 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 64 places, 112 transitions, 705 flow, removed 0 selfloop flow, removed 3 redundant places. [2024-06-21 20:26:51,137 INFO L231 Difference]: Finished difference. Result has 65 places, 58 transitions, 354 flow [2024-06-21 20:26:51,137 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=45, PETRI_DIFFERENCE_MINUEND_FLOW=324, PETRI_DIFFERENCE_MINUEND_PLACES=60, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=57, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=50, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=354, PETRI_PLACES=65, PETRI_TRANSITIONS=58} [2024-06-21 20:26:51,138 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 24 predicate places. [2024-06-21 20:26:51,138 INFO L495 AbstractCegarLoop]: Abstraction has has 65 places, 58 transitions, 354 flow [2024-06-21 20:26:51,138 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 11.4) internal successors, (57), 5 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 20:26:51,138 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 20:26:51,139 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] [2024-06-21 20:26:51,139 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-06-21 20:26:51,139 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-21 20:26:51,139 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 20:26:51,139 INFO L85 PathProgramCache]: Analyzing trace with hash -550161387, now seen corresponding path program 1 times [2024-06-21 20:26:51,139 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 20:26:51,140 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1201652825] [2024-06-21 20:26:51,140 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 20:26:51,140 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 20:26:51,154 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 20:26:51,210 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-06-21 20:26:51,210 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 20:26:51,211 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1201652825] [2024-06-21 20:26:51,211 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1201652825] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 20:26:51,211 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 20:26:51,211 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-06-21 20:26:51,212 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [935859076] [2024-06-21 20:26:51,212 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 20:26:51,212 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-06-21 20:26:51,212 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 20:26:51,213 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-06-21 20:26:51,213 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-06-21 20:26:51,220 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 45 [2024-06-21 20:26:51,220 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 65 places, 58 transitions, 354 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) [2024-06-21 20:26:51,220 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 20:26:51,220 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 45 [2024-06-21 20:26:51,221 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 20:26:51,981 INFO L124 PetriNetUnfolderBase]: 8667/12450 cut-off events. [2024-06-21 20:26:51,982 INFO L125 PetriNetUnfolderBase]: For 17768/18032 co-relation queries the response was YES. [2024-06-21 20:26:52,003 INFO L83 FinitePrefix]: Finished finitePrefix Result has 34817 conditions, 12450 events. 8667/12450 cut-off events. For 17768/18032 co-relation queries the response was YES. Maximal size of possible extension queue 609. Compared 72848 event pairs, 5622 based on Foata normal form. 0/11837 useless extension candidates. Maximal degree in co-relation 31251. Up to 10543 conditions per place. [2024-06-21 20:26:52,032 INFO L140 encePairwiseOnDemand]: 38/45 looper letters, 46 selfloop transitions, 2 changer transitions 26/80 dead transitions. [2024-06-21 20:26:52,032 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 69 places, 80 transitions, 588 flow [2024-06-21 20:26:52,033 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-06-21 20:26:52,033 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-06-21 20:26:52,033 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 112 transitions. [2024-06-21 20:26:52,033 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.49777777777777776 [2024-06-21 20:26:52,034 INFO L175 Difference]: Start difference. First operand has 65 places, 58 transitions, 354 flow. Second operand 5 states and 112 transitions. [2024-06-21 20:26:52,034 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 69 places, 80 transitions, 588 flow [2024-06-21 20:26:52,060 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 66 places, 80 transitions, 572 flow, removed 1 selfloop flow, removed 3 redundant places. [2024-06-21 20:26:52,061 INFO L231 Difference]: Finished difference. Result has 67 places, 54 transitions, 310 flow [2024-06-21 20:26:52,062 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=45, PETRI_DIFFERENCE_MINUEND_FLOW=340, PETRI_DIFFERENCE_MINUEND_PLACES=62, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=58, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=56, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=310, PETRI_PLACES=67, PETRI_TRANSITIONS=54} [2024-06-21 20:26:52,063 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 26 predicate places. [2024-06-21 20:26:52,063 INFO L495 AbstractCegarLoop]: Abstraction has has 67 places, 54 transitions, 310 flow [2024-06-21 20:26:52,063 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) [2024-06-21 20:26:52,063 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 20:26:52,064 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] [2024-06-21 20:26:52,064 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-06-21 20:26:52,064 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-21 20:26:52,064 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 20:26:52,064 INFO L85 PathProgramCache]: Analyzing trace with hash -1307666172, now seen corresponding path program 1 times [2024-06-21 20:26:52,065 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 20:26:52,065 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1308882298] [2024-06-21 20:26:52,065 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 20:26:52,065 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 20:26:52,079 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 20:26:52,170 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-06-21 20:26:52,171 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 20:26:52,171 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1308882298] [2024-06-21 20:26:52,171 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1308882298] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 20:26:52,171 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 20:26:52,172 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-06-21 20:26:52,172 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [866243978] [2024-06-21 20:26:52,172 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 20:26:52,172 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-06-21 20:26:52,172 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 20:26:52,173 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-06-21 20:26:52,173 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-06-21 20:26:52,180 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 45 [2024-06-21 20:26:52,181 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 67 places, 54 transitions, 310 flow. Second operand has 5 states, 5 states have (on average 14.6) internal successors, (73), 5 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 20:26:52,181 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 20:26:52,181 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 45 [2024-06-21 20:26:52,181 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 20:26:52,712 INFO L124 PetriNetUnfolderBase]: 6738/9610 cut-off events. [2024-06-21 20:26:52,712 INFO L125 PetriNetUnfolderBase]: For 13907/14135 co-relation queries the response was YES. [2024-06-21 20:26:52,727 INFO L83 FinitePrefix]: Finished finitePrefix Result has 27447 conditions, 9610 events. 6738/9610 cut-off events. For 13907/14135 co-relation queries the response was YES. Maximal size of possible extension queue 459. Compared 52830 event pairs, 2703 based on Foata normal form. 66/9592 useless extension candidates. Maximal degree in co-relation 27418. Up to 4349 conditions per place. [2024-06-21 20:26:52,747 INFO L140 encePairwiseOnDemand]: 39/45 looper letters, 50 selfloop transitions, 9 changer transitions 22/87 dead transitions. [2024-06-21 20:26:52,748 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 67 places, 87 transitions, 584 flow [2024-06-21 20:26:52,748 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-06-21 20:26:52,748 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-06-21 20:26:52,749 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 121 transitions. [2024-06-21 20:26:52,749 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5377777777777778 [2024-06-21 20:26:52,749 INFO L175 Difference]: Start difference. First operand has 67 places, 54 transitions, 310 flow. Second operand 5 states and 121 transitions. [2024-06-21 20:26:52,749 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 67 places, 87 transitions, 584 flow [2024-06-21 20:26:52,772 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 63 places, 87 transitions, 562 flow, removed 9 selfloop flow, removed 4 redundant places. [2024-06-21 20:26:52,773 INFO L231 Difference]: Finished difference. Result has 64 places, 53 transitions, 308 flow [2024-06-21 20:26:52,773 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=45, PETRI_DIFFERENCE_MINUEND_FLOW=294, PETRI_DIFFERENCE_MINUEND_PLACES=59, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=54, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=45, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=308, PETRI_PLACES=64, PETRI_TRANSITIONS=53} [2024-06-21 20:26:52,773 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 23 predicate places. [2024-06-21 20:26:52,773 INFO L495 AbstractCegarLoop]: Abstraction has has 64 places, 53 transitions, 308 flow [2024-06-21 20:26:52,774 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 14.6) internal successors, (73), 5 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 20:26:52,774 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 20:26:52,774 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] [2024-06-21 20:26:52,774 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2024-06-21 20:26:52,774 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-21 20:26:52,774 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 20:26:52,775 INFO L85 PathProgramCache]: Analyzing trace with hash 148356786, now seen corresponding path program 1 times [2024-06-21 20:26:52,775 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 20:26:52,775 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1136626693] [2024-06-21 20:26:52,775 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 20:26:52,775 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 20:26:52,785 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 20:26:52,833 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-06-21 20:26:52,833 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 20:26:52,833 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1136626693] [2024-06-21 20:26:52,834 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1136626693] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 20:26:52,834 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 20:26:52,834 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-06-21 20:26:52,834 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1376937129] [2024-06-21 20:26:52,834 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 20:26:52,834 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-06-21 20:26:52,835 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 20:26:52,835 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-06-21 20:26:52,835 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-06-21 20:26:52,845 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 45 [2024-06-21 20:26:52,845 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 64 places, 53 transitions, 308 flow. Second operand has 5 states, 5 states have (on average 14.6) internal successors, (73), 5 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 20:26:52,845 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 20:26:52,845 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 45 [2024-06-21 20:26:52,845 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 20:26:53,246 INFO L124 PetriNetUnfolderBase]: 5187/7164 cut-off events. [2024-06-21 20:26:53,247 INFO L125 PetriNetUnfolderBase]: For 11178/11374 co-relation queries the response was YES. [2024-06-21 20:26:53,258 INFO L83 FinitePrefix]: Finished finitePrefix Result has 21035 conditions, 7164 events. 5187/7164 cut-off events. For 11178/11374 co-relation queries the response was YES. Maximal size of possible extension queue 345. Compared 35352 event pairs, 1815 based on Foata normal form. 57/7150 useless extension candidates. Maximal degree in co-relation 21000. Up to 3786 conditions per place. [2024-06-21 20:26:53,274 INFO L140 encePairwiseOnDemand]: 39/45 looper letters, 57 selfloop transitions, 7 changer transitions 22/92 dead transitions. [2024-06-21 20:26:53,274 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 66 places, 92 transitions, 618 flow [2024-06-21 20:26:53,275 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-06-21 20:26:53,275 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-06-21 20:26:53,275 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 126 transitions. [2024-06-21 20:26:53,275 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.56 [2024-06-21 20:26:53,275 INFO L175 Difference]: Start difference. First operand has 64 places, 53 transitions, 308 flow. Second operand 5 states and 126 transitions. [2024-06-21 20:26:53,276 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 66 places, 92 transitions, 618 flow [2024-06-21 20:26:53,298 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 61 places, 92 transitions, 587 flow, removed 10 selfloop flow, removed 5 redundant places. [2024-06-21 20:26:53,300 INFO L231 Difference]: Finished difference. Result has 62 places, 52 transitions, 294 flow [2024-06-21 20:26:53,300 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=45, PETRI_DIFFERENCE_MINUEND_FLOW=289, PETRI_DIFFERENCE_MINUEND_PLACES=57, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=53, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=46, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=294, PETRI_PLACES=62, PETRI_TRANSITIONS=52} [2024-06-21 20:26:53,300 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 21 predicate places. [2024-06-21 20:26:53,300 INFO L495 AbstractCegarLoop]: Abstraction has has 62 places, 52 transitions, 294 flow [2024-06-21 20:26:53,301 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 14.6) internal successors, (73), 5 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 20:26:53,301 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 20:26:53,301 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] [2024-06-21 20:26:53,301 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2024-06-21 20:26:53,301 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-21 20:26:53,301 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 20:26:53,302 INFO L85 PathProgramCache]: Analyzing trace with hash -2001880141, now seen corresponding path program 1 times [2024-06-21 20:26:53,302 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 20:26:53,302 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [299840893] [2024-06-21 20:26:53,302 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 20:26:53,302 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 20:26:53,315 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 20:26:53,409 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-06-21 20:26:53,410 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 20:26:53,410 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [299840893] [2024-06-21 20:26:53,410 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [299840893] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 20:26:53,410 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 20:26:53,410 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-06-21 20:26:53,410 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1578151876] [2024-06-21 20:26:53,410 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 20:26:53,411 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-06-21 20:26:53,411 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 20:26:53,411 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-06-21 20:26:53,412 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-06-21 20:26:53,421 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 45 [2024-06-21 20:26:53,421 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 62 places, 52 transitions, 294 flow. Second operand has 5 states, 5 states have (on average 12.0) internal successors, (60), 5 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 20:26:53,421 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 20:26:53,421 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 45 [2024-06-21 20:26:53,421 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 20:26:53,879 INFO L124 PetriNetUnfolderBase]: 5514/7327 cut-off events. [2024-06-21 20:26:53,879 INFO L125 PetriNetUnfolderBase]: For 14756/14756 co-relation queries the response was YES. [2024-06-21 20:26:53,891 INFO L83 FinitePrefix]: Finished finitePrefix Result has 21881 conditions, 7327 events. 5514/7327 cut-off events. For 14756/14756 co-relation queries the response was YES. Maximal size of possible extension queue 373. Compared 34183 event pairs, 1014 based on Foata normal form. 64/7022 useless extension candidates. Maximal degree in co-relation 21846. Up to 5377 conditions per place. [2024-06-21 20:26:53,908 INFO L140 encePairwiseOnDemand]: 40/45 looper letters, 80 selfloop transitions, 7 changer transitions 12/104 dead transitions. [2024-06-21 20:26:53,908 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 64 places, 104 transitions, 649 flow [2024-06-21 20:26:53,909 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-06-21 20:26:53,909 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-06-21 20:26:53,909 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 129 transitions. [2024-06-21 20:26:53,910 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5733333333333334 [2024-06-21 20:26:53,910 INFO L175 Difference]: Start difference. First operand has 62 places, 52 transitions, 294 flow. Second operand 5 states and 129 transitions. [2024-06-21 20:26:53,910 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 64 places, 104 transitions, 649 flow [2024-06-21 20:26:53,960 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 60 places, 104 transitions, 625 flow, removed 8 selfloop flow, removed 4 redundant places. [2024-06-21 20:26:53,961 INFO L231 Difference]: Finished difference. Result has 61 places, 53 transitions, 314 flow [2024-06-21 20:26:53,962 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=45, PETRI_DIFFERENCE_MINUEND_FLOW=283, PETRI_DIFFERENCE_MINUEND_PLACES=56, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=52, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=45, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=314, PETRI_PLACES=61, PETRI_TRANSITIONS=53} [2024-06-21 20:26:53,962 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 20 predicate places. [2024-06-21 20:26:53,962 INFO L495 AbstractCegarLoop]: Abstraction has has 61 places, 53 transitions, 314 flow [2024-06-21 20:26:53,962 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 12.0) internal successors, (60), 5 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 20:26:53,963 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 20:26:53,963 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] [2024-06-21 20:26:53,963 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2024-06-21 20:26:53,963 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-21 20:26:53,963 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 20:26:53,963 INFO L85 PathProgramCache]: Analyzing trace with hash 366683529, now seen corresponding path program 2 times [2024-06-21 20:26:53,964 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 20:26:53,964 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [805549396] [2024-06-21 20:26:53,964 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 20:26:53,964 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 20:26:53,976 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 20:26:54,061 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-06-21 20:26:54,061 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 20:26:54,062 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [805549396] [2024-06-21 20:26:54,062 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [805549396] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 20:26:54,062 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 20:26:54,062 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-06-21 20:26:54,062 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1729755122] [2024-06-21 20:26:54,062 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 20:26:54,062 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-06-21 20:26:54,063 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 20:26:54,063 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-06-21 20:26:54,063 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-06-21 20:26:54,073 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 45 [2024-06-21 20:26:54,074 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 61 places, 53 transitions, 314 flow. Second operand has 5 states, 5 states have (on average 12.0) internal successors, (60), 5 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 20:26:54,074 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 20:26:54,074 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 45 [2024-06-21 20:26:54,074 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 20:26:54,522 INFO L124 PetriNetUnfolderBase]: 5274/7023 cut-off events. [2024-06-21 20:26:54,522 INFO L125 PetriNetUnfolderBase]: For 15322/15322 co-relation queries the response was YES. [2024-06-21 20:26:54,532 INFO L83 FinitePrefix]: Finished finitePrefix Result has 20041 conditions, 7023 events. 5274/7023 cut-off events. For 15322/15322 co-relation queries the response was YES. Maximal size of possible extension queue 373. Compared 32753 event pairs, 1194 based on Foata normal form. 64/5903 useless extension candidates. Maximal degree in co-relation 20007. Up to 5271 conditions per place. [2024-06-21 20:26:54,547 INFO L140 encePairwiseOnDemand]: 40/45 looper letters, 77 selfloop transitions, 7 changer transitions 12/101 dead transitions. [2024-06-21 20:26:54,547 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 65 places, 101 transitions, 633 flow [2024-06-21 20:26:54,547 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-06-21 20:26:54,548 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-06-21 20:26:54,548 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 126 transitions. [2024-06-21 20:26:54,548 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.56 [2024-06-21 20:26:54,548 INFO L175 Difference]: Start difference. First operand has 61 places, 53 transitions, 314 flow. Second operand 5 states and 126 transitions. [2024-06-21 20:26:54,549 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 65 places, 101 transitions, 633 flow [2024-06-21 20:26:54,581 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 62 places, 101 transitions, 621 flow, removed 0 selfloop flow, removed 3 redundant places. [2024-06-21 20:26:54,582 INFO L231 Difference]: Finished difference. Result has 63 places, 53 transitions, 320 flow [2024-06-21 20:26:54,582 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=45, PETRI_DIFFERENCE_MINUEND_FLOW=302, PETRI_DIFFERENCE_MINUEND_PLACES=58, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=53, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=46, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=320, PETRI_PLACES=63, PETRI_TRANSITIONS=53} [2024-06-21 20:26:54,583 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 22 predicate places. [2024-06-21 20:26:54,583 INFO L495 AbstractCegarLoop]: Abstraction has has 63 places, 53 transitions, 320 flow [2024-06-21 20:26:54,583 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 12.0) internal successors, (60), 5 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 20:26:54,583 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 20:26:54,583 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] [2024-06-21 20:26:54,583 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2024-06-21 20:26:54,584 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-21 20:26:54,584 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 20:26:54,584 INFO L85 PathProgramCache]: Analyzing trace with hash -1081959244, now seen corresponding path program 1 times [2024-06-21 20:26:54,584 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 20:26:54,584 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [45205044] [2024-06-21 20:26:54,584 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 20:26:54,585 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 20:26:54,597 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 20:26:54,672 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-06-21 20:26:54,673 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 20:26:54,673 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [45205044] [2024-06-21 20:26:54,673 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [45205044] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 20:26:54,673 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 20:26:54,673 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-06-21 20:26:54,673 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1569417972] [2024-06-21 20:26:54,673 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 20:26:54,674 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-06-21 20:26:54,674 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 20:26:54,674 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-06-21 20:26:54,674 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-06-21 20:26:54,684 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 45 [2024-06-21 20:26:54,684 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 63 places, 53 transitions, 320 flow. Second operand has 5 states, 5 states have (on average 12.0) internal successors, (60), 5 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 20:26:54,684 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 20:26:54,684 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 45 [2024-06-21 20:26:54,684 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 20:26:55,140 INFO L124 PetriNetUnfolderBase]: 5690/7567 cut-off events. [2024-06-21 20:26:55,141 INFO L125 PetriNetUnfolderBase]: For 17916/17916 co-relation queries the response was YES. [2024-06-21 20:26:55,151 INFO L83 FinitePrefix]: Finished finitePrefix Result has 21726 conditions, 7567 events. 5690/7567 cut-off events. For 17916/17916 co-relation queries the response was YES. Maximal size of possible extension queue 425. Compared 35849 event pairs, 1257 based on Foata normal form. 64/6352 useless extension candidates. Maximal degree in co-relation 21691. Up to 5647 conditions per place. [2024-06-21 20:26:55,166 INFO L140 encePairwiseOnDemand]: 40/45 looper letters, 78 selfloop transitions, 7 changer transitions 15/105 dead transitions. [2024-06-21 20:26:55,166 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 67 places, 105 transitions, 663 flow [2024-06-21 20:26:55,167 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-06-21 20:26:55,167 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-06-21 20:26:55,167 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 129 transitions. [2024-06-21 20:26:55,167 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5733333333333334 [2024-06-21 20:26:55,168 INFO L175 Difference]: Start difference. First operand has 63 places, 53 transitions, 320 flow. Second operand 5 states and 129 transitions. [2024-06-21 20:26:55,168 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 67 places, 105 transitions, 663 flow [2024-06-21 20:26:55,209 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 64 places, 105 transitions, 649 flow, removed 1 selfloop flow, removed 3 redundant places. [2024-06-21 20:26:55,210 INFO L231 Difference]: Finished difference. Result has 65 places, 54 transitions, 336 flow [2024-06-21 20:26:55,210 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=45, PETRI_DIFFERENCE_MINUEND_FLOW=306, PETRI_DIFFERENCE_MINUEND_PLACES=60, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=53, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=46, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=336, PETRI_PLACES=65, PETRI_TRANSITIONS=54} [2024-06-21 20:26:55,211 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 24 predicate places. [2024-06-21 20:26:55,211 INFO L495 AbstractCegarLoop]: Abstraction has has 65 places, 54 transitions, 336 flow [2024-06-21 20:26:55,211 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 12.0) internal successors, (60), 5 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 20:26:55,211 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 20:26:55,211 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] [2024-06-21 20:26:55,211 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2024-06-21 20:26:55,211 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-21 20:26:55,212 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 20:26:55,212 INFO L85 PathProgramCache]: Analyzing trace with hash -1081953664, now seen corresponding path program 2 times [2024-06-21 20:26:55,212 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 20:26:55,212 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [489463844] [2024-06-21 20:26:55,212 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 20:26:55,212 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 20:26:55,224 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 20:26:55,296 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-06-21 20:26:55,296 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 20:26:55,297 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [489463844] [2024-06-21 20:26:55,297 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [489463844] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 20:26:55,297 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 20:26:55,297 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-06-21 20:26:55,297 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1063956844] [2024-06-21 20:26:55,297 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 20:26:55,298 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-06-21 20:26:55,298 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 20:26:55,298 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-06-21 20:26:55,298 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-06-21 20:26:55,302 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 45 [2024-06-21 20:26:55,303 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 65 places, 54 transitions, 336 flow. Second operand has 5 states, 5 states have (on average 12.0) internal successors, (60), 5 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 20:26:55,303 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 20:26:55,303 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 45 [2024-06-21 20:26:55,303 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 20:26:55,749 INFO L124 PetriNetUnfolderBase]: 5450/7263 cut-off events. [2024-06-21 20:26:55,749 INFO L125 PetriNetUnfolderBase]: For 17211/17211 co-relation queries the response was YES. [2024-06-21 20:26:55,759 INFO L83 FinitePrefix]: Finished finitePrefix Result has 20539 conditions, 7263 events. 5450/7263 cut-off events. For 17211/17211 co-relation queries the response was YES. Maximal size of possible extension queue 419. Compared 34257 event pairs, 1170 based on Foata normal form. 64/6095 useless extension candidates. Maximal degree in co-relation 20503. Up to 5511 conditions per place. [2024-06-21 20:26:55,771 INFO L140 encePairwiseOnDemand]: 40/45 looper letters, 72 selfloop transitions, 7 changer transitions 18/102 dead transitions. [2024-06-21 20:26:55,771 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 69 places, 102 transitions, 657 flow [2024-06-21 20:26:55,772 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-06-21 20:26:55,772 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-06-21 20:26:55,772 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 126 transitions. [2024-06-21 20:26:55,773 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.56 [2024-06-21 20:26:55,773 INFO L175 Difference]: Start difference. First operand has 65 places, 54 transitions, 336 flow. Second operand 5 states and 126 transitions. [2024-06-21 20:26:55,773 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 69 places, 102 transitions, 657 flow [2024-06-21 20:26:55,813 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 66 places, 102 transitions, 645 flow, removed 0 selfloop flow, removed 3 redundant places. [2024-06-21 20:26:55,814 INFO L231 Difference]: Finished difference. Result has 67 places, 54 transitions, 342 flow [2024-06-21 20:26:55,815 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=45, PETRI_DIFFERENCE_MINUEND_FLOW=324, PETRI_DIFFERENCE_MINUEND_PLACES=62, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=54, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=47, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=342, PETRI_PLACES=67, PETRI_TRANSITIONS=54} [2024-06-21 20:26:55,815 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 26 predicate places. [2024-06-21 20:26:55,815 INFO L495 AbstractCegarLoop]: Abstraction has has 67 places, 54 transitions, 342 flow [2024-06-21 20:26:55,815 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 12.0) internal successors, (60), 5 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 20:26:55,815 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 20:26:55,816 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, 1] [2024-06-21 20:26:55,816 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2024-06-21 20:26:55,816 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-21 20:26:55,816 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 20:26:55,816 INFO L85 PathProgramCache]: Analyzing trace with hash -450918484, now seen corresponding path program 1 times [2024-06-21 20:26:55,816 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 20:26:55,817 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1739057898] [2024-06-21 20:26:55,817 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 20:26:55,817 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 20:26:55,828 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 20:26:55,914 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-06-21 20:26:55,914 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 20:26:55,915 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1739057898] [2024-06-21 20:26:55,915 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1739057898] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 20:26:55,915 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 20:26:55,915 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-06-21 20:26:55,915 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [666144820] [2024-06-21 20:26:55,915 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 20:26:55,916 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-06-21 20:26:55,916 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 20:26:55,916 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-06-21 20:26:55,916 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-06-21 20:26:55,929 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 45 [2024-06-21 20:26:55,929 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 67 places, 54 transitions, 342 flow. Second operand has 6 states, 6 states have (on average 11.666666666666666) internal successors, (70), 6 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 20:26:55,929 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 20:26:55,929 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 45 [2024-06-21 20:26:55,929 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 20:26:56,461 INFO L124 PetriNetUnfolderBase]: 5866/7807 cut-off events. [2024-06-21 20:26:56,461 INFO L125 PetriNetUnfolderBase]: For 19356/19356 co-relation queries the response was YES. [2024-06-21 20:26:56,473 INFO L83 FinitePrefix]: Finished finitePrefix Result has 22160 conditions, 7807 events. 5866/7807 cut-off events. For 19356/19356 co-relation queries the response was YES. Maximal size of possible extension queue 405. Compared 36932 event pairs, 918 based on Foata normal form. 64/6544 useless extension candidates. Maximal degree in co-relation 22123. Up to 5101 conditions per place. [2024-06-21 20:26:56,485 INFO L140 encePairwiseOnDemand]: 40/45 looper letters, 63 selfloop transitions, 5 changer transitions 51/124 dead transitions. [2024-06-21 20:26:56,485 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 72 places, 124 transitions, 777 flow [2024-06-21 20:26:56,486 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-21 20:26:56,486 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-21 20:26:56,486 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 156 transitions. [2024-06-21 20:26:56,487 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5777777777777777 [2024-06-21 20:26:56,487 INFO L175 Difference]: Start difference. First operand has 67 places, 54 transitions, 342 flow. Second operand 6 states and 156 transitions. [2024-06-21 20:26:56,487 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 72 places, 124 transitions, 777 flow [2024-06-21 20:26:56,536 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 69 places, 124 transitions, 763 flow, removed 1 selfloop flow, removed 3 redundant places. [2024-06-21 20:26:56,537 INFO L231 Difference]: Finished difference. Result has 70 places, 52 transitions, 318 flow [2024-06-21 20:26:56,538 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=45, PETRI_DIFFERENCE_MINUEND_FLOW=328, PETRI_DIFFERENCE_MINUEND_PLACES=64, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=54, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=49, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=318, PETRI_PLACES=70, PETRI_TRANSITIONS=52} [2024-06-21 20:26:56,538 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 29 predicate places. [2024-06-21 20:26:56,538 INFO L495 AbstractCegarLoop]: Abstraction has has 70 places, 52 transitions, 318 flow [2024-06-21 20:26:56,538 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 11.666666666666666) internal successors, (70), 6 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 20:26:56,539 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 20:26:56,539 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, 1] [2024-06-21 20:26:56,539 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2024-06-21 20:26:56,539 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-21 20:26:56,539 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 20:26:56,539 INFO L85 PathProgramCache]: Analyzing trace with hash -450912904, now seen corresponding path program 2 times [2024-06-21 20:26:56,540 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 20:26:56,540 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [917654360] [2024-06-21 20:26:56,540 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 20:26:56,540 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 20:26:56,551 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 20:26:56,639 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-06-21 20:26:56,639 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 20:26:56,639 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [917654360] [2024-06-21 20:26:56,640 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [917654360] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 20:26:56,640 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 20:26:56,640 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-06-21 20:26:56,640 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [341645140] [2024-06-21 20:26:56,640 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 20:26:56,640 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-06-21 20:26:56,641 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 20:26:56,641 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-06-21 20:26:56,641 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-06-21 20:26:56,649 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 45 [2024-06-21 20:26:56,649 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 70 places, 52 transitions, 318 flow. Second operand has 6 states, 6 states have (on average 11.666666666666666) internal successors, (70), 6 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 20:26:56,650 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 20:26:56,650 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 45 [2024-06-21 20:26:56,650 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 20:26:57,116 INFO L124 PetriNetUnfolderBase]: 5286/7051 cut-off events. [2024-06-21 20:26:57,116 INFO L125 PetriNetUnfolderBase]: For 18671/18671 co-relation queries the response was YES. [2024-06-21 20:26:57,126 INFO L83 FinitePrefix]: Finished finitePrefix Result has 19961 conditions, 7051 events. 5286/7051 cut-off events. For 18671/18671 co-relation queries the response was YES. Maximal size of possible extension queue 352. Compared 32759 event pairs, 1062 based on Foata normal form. 64/5908 useless extension candidates. Maximal degree in co-relation 19923. Up to 4525 conditions per place. [2024-06-21 20:26:57,135 INFO L140 encePairwiseOnDemand]: 40/45 looper letters, 48 selfloop transitions, 3 changer transitions 63/119 dead transitions. [2024-06-21 20:26:57,136 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 72 places, 119 transitions, 737 flow [2024-06-21 20:26:57,136 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-21 20:26:57,136 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-21 20:26:57,137 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 152 transitions. [2024-06-21 20:26:57,137 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.562962962962963 [2024-06-21 20:26:57,137 INFO L175 Difference]: Start difference. First operand has 70 places, 52 transitions, 318 flow. Second operand 6 states and 152 transitions. [2024-06-21 20:26:57,137 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 72 places, 119 transitions, 737 flow [2024-06-21 20:26:57,189 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 67 places, 119 transitions, 717 flow, removed 5 selfloop flow, removed 5 redundant places. [2024-06-21 20:26:57,190 INFO L231 Difference]: Finished difference. Result has 68 places, 49 transitions, 280 flow [2024-06-21 20:26:57,190 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=45, PETRI_DIFFERENCE_MINUEND_FLOW=302, PETRI_DIFFERENCE_MINUEND_PLACES=62, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=52, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=49, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=280, PETRI_PLACES=68, PETRI_TRANSITIONS=49} [2024-06-21 20:26:57,190 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 27 predicate places. [2024-06-21 20:26:57,190 INFO L495 AbstractCegarLoop]: Abstraction has has 68 places, 49 transitions, 280 flow [2024-06-21 20:26:57,190 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 11.666666666666666) internal successors, (70), 6 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 20:26:57,191 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 20:26:57,191 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, 1] [2024-06-21 20:26:57,191 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2024-06-21 20:26:57,191 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-21 20:26:57,191 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 20:26:57,191 INFO L85 PathProgramCache]: Analyzing trace with hash -450716674, now seen corresponding path program 3 times [2024-06-21 20:26:57,191 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 20:26:57,191 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [734342072] [2024-06-21 20:26:57,192 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 20:26:57,192 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 20:26:57,202 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 20:26:57,277 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-06-21 20:26:57,277 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 20:26:57,277 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [734342072] [2024-06-21 20:26:57,278 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [734342072] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 20:26:57,278 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 20:26:57,278 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-06-21 20:26:57,278 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1355312964] [2024-06-21 20:26:57,278 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 20:26:57,278 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-06-21 20:26:57,278 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 20:26:57,279 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-06-21 20:26:57,279 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-06-21 20:26:57,290 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 45 [2024-06-21 20:26:57,290 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 68 places, 49 transitions, 280 flow. Second operand has 6 states, 6 states have (on average 11.666666666666666) internal successors, (70), 6 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 20:26:57,290 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 20:26:57,290 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 45 [2024-06-21 20:26:57,290 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 20:26:57,638 INFO L124 PetriNetUnfolderBase]: 4316/5765 cut-off events. [2024-06-21 20:26:57,638 INFO L125 PetriNetUnfolderBase]: For 14283/14283 co-relation queries the response was YES. [2024-06-21 20:26:57,645 INFO L83 FinitePrefix]: Finished finitePrefix Result has 16128 conditions, 5765 events. 4316/5765 cut-off events. For 14283/14283 co-relation queries the response was YES. Maximal size of possible extension queue 268. Compared 25323 event pairs, 690 based on Foata normal form. 64/4841 useless extension candidates. Maximal degree in co-relation 16091. Up to 3089 conditions per place. [2024-06-21 20:26:57,653 INFO L140 encePairwiseOnDemand]: 40/45 looper letters, 53 selfloop transitions, 4 changer transitions 51/113 dead transitions. [2024-06-21 20:26:57,653 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 68 places, 113 transitions, 676 flow [2024-06-21 20:26:57,653 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-21 20:26:57,653 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-21 20:26:57,654 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 149 transitions. [2024-06-21 20:26:57,654 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5518518518518518 [2024-06-21 20:26:57,654 INFO L175 Difference]: Start difference. First operand has 68 places, 49 transitions, 280 flow. Second operand 6 states and 149 transitions. [2024-06-21 20:26:57,654 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 68 places, 113 transitions, 676 flow [2024-06-21 20:26:57,679 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 62 places, 113 transitions, 637 flow, removed 13 selfloop flow, removed 6 redundant places. [2024-06-21 20:26:57,680 INFO L231 Difference]: Finished difference. Result has 63 places, 47 transitions, 241 flow [2024-06-21 20:26:57,680 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=45, PETRI_DIFFERENCE_MINUEND_FLOW=249, PETRI_DIFFERENCE_MINUEND_PLACES=57, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=49, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=45, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=241, PETRI_PLACES=63, PETRI_TRANSITIONS=47} [2024-06-21 20:26:57,680 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 22 predicate places. [2024-06-21 20:26:57,680 INFO L495 AbstractCegarLoop]: Abstraction has has 63 places, 47 transitions, 241 flow [2024-06-21 20:26:57,680 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 11.666666666666666) internal successors, (70), 6 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 20:26:57,681 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 20:26:57,681 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, 1] [2024-06-21 20:26:57,681 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2024-06-21 20:26:57,681 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-21 20:26:57,681 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 20:26:57,681 INFO L85 PathProgramCache]: Analyzing trace with hash -450704584, now seen corresponding path program 4 times [2024-06-21 20:26:57,681 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 20:26:57,681 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [968597198] [2024-06-21 20:26:57,682 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 20:26:57,682 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 20:26:57,692 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 20:26:57,767 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-06-21 20:26:57,768 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 20:26:57,768 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [968597198] [2024-06-21 20:26:57,768 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [968597198] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 20:26:57,768 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 20:26:57,768 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-06-21 20:26:57,768 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [767817441] [2024-06-21 20:26:57,768 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 20:26:57,769 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-06-21 20:26:57,769 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 20:26:57,769 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-06-21 20:26:57,769 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-06-21 20:26:57,775 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 45 [2024-06-21 20:26:57,776 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 63 places, 47 transitions, 241 flow. Second operand has 6 states, 6 states have (on average 11.666666666666666) internal successors, (70), 6 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 20:26:57,776 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 20:26:57,776 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 45 [2024-06-21 20:26:57,776 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 20:26:58,082 INFO L124 PetriNetUnfolderBase]: 3736/5009 cut-off events. [2024-06-21 20:26:58,082 INFO L125 PetriNetUnfolderBase]: For 8853/8853 co-relation queries the response was YES. [2024-06-21 20:26:58,088 INFO L83 FinitePrefix]: Finished finitePrefix Result has 13336 conditions, 5009 events. 3736/5009 cut-off events. For 8853/8853 co-relation queries the response was YES. Maximal size of possible extension queue 226. Compared 21731 event pairs, 834 based on Foata normal form. 64/4205 useless extension candidates. Maximal degree in co-relation 13302. Up to 2513 conditions per place. [2024-06-21 20:26:58,093 INFO L140 encePairwiseOnDemand]: 40/45 looper letters, 41 selfloop transitions, 2 changer transitions 60/108 dead transitions. [2024-06-21 20:26:58,093 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 65 places, 108 transitions, 609 flow [2024-06-21 20:26:58,094 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-21 20:26:58,094 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-21 20:26:58,094 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 145 transitions. [2024-06-21 20:26:58,094 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5370370370370371 [2024-06-21 20:26:58,094 INFO L175 Difference]: Start difference. First operand has 63 places, 47 transitions, 241 flow. Second operand 6 states and 145 transitions. [2024-06-21 20:26:58,094 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 65 places, 108 transitions, 609 flow [2024-06-21 20:26:58,113 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 60 places, 108 transitions, 591 flow, removed 5 selfloop flow, removed 5 redundant places. [2024-06-21 20:26:58,113 INFO L231 Difference]: Finished difference. Result has 61 places, 44 transitions, 204 flow [2024-06-21 20:26:58,114 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=45, PETRI_DIFFERENCE_MINUEND_FLOW=227, PETRI_DIFFERENCE_MINUEND_PLACES=55, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=47, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=45, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=204, PETRI_PLACES=61, PETRI_TRANSITIONS=44} [2024-06-21 20:26:58,114 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 20 predicate places. [2024-06-21 20:26:58,114 INFO L495 AbstractCegarLoop]: Abstraction has has 61 places, 44 transitions, 204 flow [2024-06-21 20:26:58,114 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 11.666666666666666) internal successors, (70), 6 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 20:26:58,114 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 20:26:58,114 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, 1] [2024-06-21 20:26:58,115 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2024-06-21 20:26:58,115 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-21 20:26:58,115 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 20:26:58,115 INFO L85 PathProgramCache]: Analyzing trace with hash -450538114, now seen corresponding path program 5 times [2024-06-21 20:26:58,115 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 20:26:58,115 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [91863890] [2024-06-21 20:26:58,115 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 20:26:58,115 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 20:26:58,126 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 20:26:58,201 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-06-21 20:26:58,202 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 20:26:58,202 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [91863890] [2024-06-21 20:26:58,202 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [91863890] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 20:26:58,202 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 20:26:58,202 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-06-21 20:26:58,202 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1517154735] [2024-06-21 20:26:58,202 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 20:26:58,202 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-06-21 20:26:58,203 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 20:26:58,203 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-06-21 20:26:58,203 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-06-21 20:26:58,210 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 45 [2024-06-21 20:26:58,210 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 61 places, 44 transitions, 204 flow. Second operand has 6 states, 6 states have (on average 11.666666666666666) internal successors, (70), 6 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 20:26:58,210 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 20:26:58,210 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 45 [2024-06-21 20:26:58,210 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 20:26:58,459 INFO L124 PetriNetUnfolderBase]: 2784/3753 cut-off events. [2024-06-21 20:26:58,459 INFO L125 PetriNetUnfolderBase]: For 5873/5873 co-relation queries the response was YES. [2024-06-21 20:26:58,464 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9763 conditions, 3753 events. 2784/3753 cut-off events. For 5873/5873 co-relation queries the response was YES. Maximal size of possible extension queue 149. Compared 15055 event pairs, 498 based on Foata normal form. 64/3165 useless extension candidates. Maximal degree in co-relation 9730. Up to 1425 conditions per place. [2024-06-21 20:26:58,468 INFO L140 encePairwiseOnDemand]: 40/45 looper letters, 46 selfloop transitions, 3 changer transitions 48/102 dead transitions. [2024-06-21 20:26:58,468 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 61 places, 102 transitions, 548 flow [2024-06-21 20:26:58,469 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-21 20:26:58,469 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-21 20:26:58,469 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 142 transitions. [2024-06-21 20:26:58,469 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5259259259259259 [2024-06-21 20:26:58,469 INFO L175 Difference]: Start difference. First operand has 61 places, 44 transitions, 204 flow. Second operand 6 states and 142 transitions. [2024-06-21 20:26:58,470 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 61 places, 102 transitions, 548 flow [2024-06-21 20:26:58,477 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 53 places, 102 transitions, 508 flow, removed 12 selfloop flow, removed 8 redundant places. [2024-06-21 20:26:58,478 INFO L231 Difference]: Finished difference. Result has 54 places, 42 transitions, 164 flow [2024-06-21 20:26:58,478 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=45, PETRI_DIFFERENCE_MINUEND_FLOW=174, PETRI_DIFFERENCE_MINUEND_PLACES=48, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=44, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=41, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=164, PETRI_PLACES=54, PETRI_TRANSITIONS=42} [2024-06-21 20:26:58,478 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 13 predicate places. [2024-06-21 20:26:58,478 INFO L495 AbstractCegarLoop]: Abstraction has has 54 places, 42 transitions, 164 flow [2024-06-21 20:26:58,478 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 11.666666666666666) internal successors, (70), 6 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 20:26:58,478 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 20:26:58,479 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, 1] [2024-06-21 20:26:58,479 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2024-06-21 20:26:58,479 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-21 20:26:58,479 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 20:26:58,479 INFO L85 PathProgramCache]: Analyzing trace with hash -450531604, now seen corresponding path program 6 times [2024-06-21 20:26:58,479 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 20:26:58,479 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1388041589] [2024-06-21 20:26:58,479 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 20:26:58,480 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 20:26:58,490 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 20:26:58,586 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-06-21 20:26:58,586 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 20:26:58,586 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1388041589] [2024-06-21 20:26:58,586 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1388041589] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 20:26:58,586 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 20:26:58,586 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-06-21 20:26:58,586 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [541644928] [2024-06-21 20:26:58,587 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 20:26:58,587 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-06-21 20:26:58,587 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 20:26:58,587 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-06-21 20:26:58,587 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-06-21 20:26:58,598 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 45 [2024-06-21 20:26:58,599 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 54 places, 42 transitions, 164 flow. Second operand has 6 states, 6 states have (on average 11.666666666666666) internal successors, (70), 6 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 20:26:58,599 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 20:26:58,599 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 45 [2024-06-21 20:26:58,599 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 20:26:58,789 INFO L124 PetriNetUnfolderBase]: 1680/2329 cut-off events. [2024-06-21 20:26:58,789 INFO L125 PetriNetUnfolderBase]: For 1700/1700 co-relation queries the response was YES. [2024-06-21 20:26:58,791 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5420 conditions, 2329 events. 1680/2329 cut-off events. For 1700/1700 co-relation queries the response was YES. Maximal size of possible extension queue 105. Compared 9258 event pairs, 306 based on Foata normal form. 64/1981 useless extension candidates. Maximal degree in co-relation 5407. Up to 627 conditions per place. [2024-06-21 20:26:58,792 INFO L140 encePairwiseOnDemand]: 40/45 looper letters, 0 selfloop transitions, 0 changer transitions 83/83 dead transitions. [2024-06-21 20:26:58,793 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 55 places, 83 transitions, 402 flow [2024-06-21 20:26:58,793 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-21 20:26:58,793 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-21 20:26:58,793 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 124 transitions. [2024-06-21 20:26:58,794 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45925925925925926 [2024-06-21 20:26:58,794 INFO L175 Difference]: Start difference. First operand has 54 places, 42 transitions, 164 flow. Second operand 6 states and 124 transitions. [2024-06-21 20:26:58,794 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 55 places, 83 transitions, 402 flow [2024-06-21 20:26:58,795 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 51 places, 83 transitions, 394 flow, removed 0 selfloop flow, removed 4 redundant places. [2024-06-21 20:26:58,795 INFO L231 Difference]: Finished difference. Result has 51 places, 0 transitions, 0 flow [2024-06-21 20:26:58,795 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=45, PETRI_DIFFERENCE_MINUEND_FLOW=144, PETRI_DIFFERENCE_MINUEND_PLACES=46, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=41, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=41, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=0, PETRI_PLACES=51, PETRI_TRANSITIONS=0} [2024-06-21 20:26:58,796 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 10 predicate places. [2024-06-21 20:26:58,796 INFO L495 AbstractCegarLoop]: Abstraction has has 51 places, 0 transitions, 0 flow [2024-06-21 20:26:58,796 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 11.666666666666666) internal successors, (70), 6 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 20:26:58,798 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT (5 of 6 remaining) [2024-06-21 20:26:58,798 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (4 of 6 remaining) [2024-06-21 20:26:58,799 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (3 of 6 remaining) [2024-06-21 20:26:58,799 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (2 of 6 remaining) [2024-06-21 20:26:58,799 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 6 remaining) [2024-06-21 20:26:58,799 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 6 remaining) [2024-06-21 20:26:58,799 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2024-06-21 20:26:58,799 INFO L445 BasicCegarLoop]: Path program histogram: [6, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 20:26:58,803 INFO L229 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2024-06-21 20:26:58,803 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2024-06-21 20:26:58,807 INFO L507 ceAbstractionStarter]: Automizer considered 3 witness invariants [2024-06-21 20:26:58,807 INFO L508 ceAbstractionStarter]: WitnessConsidered=3 [2024-06-21 20:26:58,808 INFO L201 PluginConnector]: Adding new model witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 21.06 08:26:58 BasicIcfg [2024-06-21 20:26:58,808 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2024-06-21 20:26:58,808 INFO L158 Benchmark]: Toolchain (without parser) took 15846.59ms. Allocated memory was 174.1MB in the beginning and 4.0GB in the end (delta: 3.8GB). Free memory was 112.1MB in the beginning and 2.7GB in the end (delta: -2.5GB). Peak memory consumption was 1.3GB. Max. memory is 16.1GB. [2024-06-21 20:26:58,808 INFO L158 Benchmark]: CDTParser took 0.19ms. Allocated memory is still 174.1MB. Free memory is still 137.6MB. There was no memory consumed. Max. memory is 16.1GB. [2024-06-21 20:26:58,808 INFO L158 Benchmark]: Witness Parser took 0.14ms. Allocated memory is still 174.1MB. Free memory is still 115.3MB. There was no memory consumed. Max. memory is 16.1GB. [2024-06-21 20:26:58,809 INFO L158 Benchmark]: CACSL2BoogieTranslator took 297.46ms. Allocated memory is still 174.1MB. Free memory was 111.6MB in the beginning and 96.4MB in the end (delta: 15.2MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. [2024-06-21 20:26:58,809 INFO L158 Benchmark]: Boogie Procedure Inliner took 40.71ms. Allocated memory is still 174.1MB. Free memory was 96.4MB in the beginning and 93.8MB in the end (delta: 2.6MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2024-06-21 20:26:58,809 INFO L158 Benchmark]: Boogie Preprocessor took 53.85ms. Allocated memory is still 174.1MB. Free memory was 93.8MB in the beginning and 91.1MB in the end (delta: 2.6MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2024-06-21 20:26:58,809 INFO L158 Benchmark]: RCFGBuilder took 790.49ms. Allocated memory was 174.1MB in the beginning and 270.5MB in the end (delta: 96.5MB). Free memory was 91.1MB in the beginning and 204.3MB in the end (delta: -113.1MB). Peak memory consumption was 59.9MB. Max. memory is 16.1GB. [2024-06-21 20:26:58,810 INFO L158 Benchmark]: TraceAbstraction took 14658.07ms. Allocated memory was 270.5MB in the beginning and 4.0GB in the end (delta: 3.7GB). Free memory was 203.2MB in the beginning and 2.7GB in the end (delta: -2.4GB). Peak memory consumption was 1.3GB. Max. memory is 16.1GB. [2024-06-21 20:26:58,810 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.19ms. Allocated memory is still 174.1MB. Free memory is still 137.6MB. There was no memory consumed. Max. memory is 16.1GB. * Witness Parser took 0.14ms. Allocated memory is still 174.1MB. Free memory is still 115.3MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 297.46ms. Allocated memory is still 174.1MB. Free memory was 111.6MB in the beginning and 96.4MB in the end (delta: 15.2MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 40.71ms. Allocated memory is still 174.1MB. Free memory was 96.4MB in the beginning and 93.8MB in the end (delta: 2.6MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * Boogie Preprocessor took 53.85ms. Allocated memory is still 174.1MB. Free memory was 93.8MB in the beginning and 91.1MB in the end (delta: 2.6MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 790.49ms. Allocated memory was 174.1MB in the beginning and 270.5MB in the end (delta: 96.5MB). Free memory was 91.1MB in the beginning and 204.3MB in the end (delta: -113.1MB). Peak memory consumption was 59.9MB. Max. memory is 16.1GB. * TraceAbstraction took 14658.07ms. Allocated memory was 270.5MB in the beginning and 4.0GB in the end (delta: 3.7GB). Free memory was 203.2MB in the beginning and 2.7GB in the end (delta: -2.4GB). Peak memory consumption was 1.3GB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 93]: invariant of correctness witness holds For all program executions holds that invariant of correctness witness holds at this location - PositiveResult [Line: 94]: invariant of correctness witness holds For all program executions holds that invariant of correctness witness holds at this location - PositiveResult [Line: 95]: invariant of correctness witness holds For all program executions holds that invariant of correctness witness holds at this location - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 7 procedures, 55 locations, 6 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 0.0s, RemoveRedundantFlowTime: 0.0s, RemoveRedundantFlowUnfoldingTime: 0.0s, BackfoldingTime: 0.0s, BackfoldingUnfoldingTime: 0.0s, FlowIncreaseByBackfolding: 0, BasicCegarLoop: OverallTime: 14.6s, OverallIterations: 22, TraceHistogramMax: 1, PathProgramHistogramMax: 6, EmptinessCheckTime: 0.0s, AutomataDifference: 12.2s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 1177 SdHoareTripleChecker+Valid, 2.1s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 1078 mSDsluCounter, 18 SdHoareTripleChecker+Invalid, 1.7s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 0 mSDsCounter, 109 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 4673 IncrementalHoareTripleChecker+Invalid, 4782 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 109 mSolverCounterUnsat, 18 mSDtfsCounter, 4673 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 79 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 67 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=354occurred in iteration=9, InterpolantAutomatonStates: 111, 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, 1.8s InterpolantComputationTime, 457 NumberOfCodeBlocks, 457 NumberOfCodeBlocksAsserted, 22 NumberOfCheckSat, 435 ConstructedInterpolants, 0 QuantifiedInterpolants, 3753 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 22 InterpolantComputations, 22 PerfectInterpolantSequences, 44/44 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! [2024-06-21 20:26:58,837 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Ended with exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: TRUE