./Ultimate.py --spec ../../../trunk/examples/svcomp/properties/unreach-call.prp --file ../../../trunk/examples/svcomp/pthread-wmm/safe033_tso.i --full-output --witness-type correctness_witness --witnessparser.only.consider.loop.invariants false --cacsl2boogietranslator.check.unreachability.of.reach_error.function false --validate ./goblint.2024-05-21_14-57-05.files/protection/safe033_tso.yml/witness.yml --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version cde23df1 Calling Ultimate with: /root/.sdkman/candidates/java/current/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReachWitnessValidation.xml -i ../../../trunk/examples/svcomp/pthread-wmm/safe033_tso.i ./goblint.2024-05-21_14-57-05.files/protection/safe033_tso.yml/witness.yml -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --traceabstraction.compute.hoare.annotation.of.negated.interpolant.automaton,.abstraction.and.cfg false --witnessparser.only.consider.loop.invariants false --cacsl2boogietranslator.check.unreachability.of.reach_error.function false --- Real Ultimate output --- This is Ultimate 0.2.4-tmp.fs.goblint-validation-cde23df-m [2024-06-14 11:33:20,180 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-06-14 11:33:20,247 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-06-14 11:33:20,253 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-06-14 11:33:20,253 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-06-14 11:33:20,275 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-06-14 11:33:20,276 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-06-14 11:33:20,276 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-06-14 11:33:20,277 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-06-14 11:33:20,280 INFO L153 SettingsManager]: * Use memory slicer=true [2024-06-14 11:33:20,280 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-06-14 11:33:20,280 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-06-14 11:33:20,280 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-06-14 11:33:20,281 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-06-14 11:33:20,282 INFO L153 SettingsManager]: * Use SBE=true [2024-06-14 11:33:20,282 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-06-14 11:33:20,282 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-06-14 11:33:20,282 INFO L153 SettingsManager]: * sizeof long=4 [2024-06-14 11:33:20,282 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-06-14 11:33:20,283 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-06-14 11:33:20,283 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-06-14 11:33:20,283 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-06-14 11:33:20,283 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-06-14 11:33:20,284 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-06-14 11:33:20,284 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-06-14 11:33:20,284 INFO L153 SettingsManager]: * sizeof long double=12 [2024-06-14 11:33:20,284 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-06-14 11:33:20,284 INFO L153 SettingsManager]: * Use constant arrays=true [2024-06-14 11:33:20,285 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-06-14 11:33:20,285 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-06-14 11:33:20,286 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-06-14 11:33:20,286 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-06-14 11:33:20,286 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-06-14 11:33:20,286 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-06-14 11:33:20,287 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-06-14 11:33:20,287 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-06-14 11:33:20,287 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-06-14 11:33:20,287 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-06-14 11:33:20,287 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-06-14 11:33:20,287 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-06-14 11:33:20,288 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2024-06-14 11:33:20,288 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-06-14 11:33:20,288 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-06-14 11:33:20,288 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessparser: Only consider loop invariants -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Check unreachability of reach_error function -> false [2024-06-14 11:33:20,496 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-06-14 11:33:20,519 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-06-14 11:33:20,521 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-06-14 11:33:20,522 INFO L270 PluginConnector]: Initializing Witness Parser... [2024-06-14 11:33:20,522 INFO L274 PluginConnector]: Witness Parser initialized [2024-06-14 11:33:20,523 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/./goblint.2024-05-21_14-57-05.files/protection/safe033_tso.yml/witness.yml [2024-06-14 11:33:20,675 INFO L270 PluginConnector]: Initializing CDTParser... [2024-06-14 11:33:20,675 INFO L274 PluginConnector]: CDTParser initialized [2024-06-14 11:33:20,676 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-wmm/safe033_tso.i [2024-06-14 11:33:21,697 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-06-14 11:33:21,899 INFO L384 CDTParser]: Found 1 translation units. [2024-06-14 11:33:21,899 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/safe033_tso.i [2024-06-14 11:33:21,909 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/16d06ab03/a074ea9510b14f8a91f9426329f04602/FLAGca4e7f56c [2024-06-14 11:33:21,932 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/16d06ab03/a074ea9510b14f8a91f9426329f04602 [2024-06-14 11:33:21,933 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-06-14 11:33:21,934 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2024-06-14 11:33:21,937 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-06-14 11:33:21,937 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-06-14 11:33:21,941 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-06-14 11:33:21,941 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 14.06 11:33:20" (1/2) ... [2024-06-14 11:33:21,942 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@16e96754 and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 14.06 11:33:21, skipping insertion in model container [2024-06-14 11:33:21,943 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 14.06 11:33:20" (1/2) ... [2024-06-14 11:33:21,944 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@6382f0c7 and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 14.06 11:33:21, skipping insertion in model container [2024-06-14 11:33:21,944 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.06 11:33:21" (2/2) ... [2024-06-14 11:33:21,945 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@16e96754 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.06 11:33:21, skipping insertion in model container [2024-06-14 11:33:21,945 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.06 11:33:21" (2/2) ... [2024-06-14 11:33:21,946 INFO L83 nessWitnessExtractor]: Extracting all invariants from correctness witness [2024-06-14 11:33:21,970 INFO L95 edCorrectnessWitness]: Found the following entries in the witness: [2024-06-14 11:33:21,971 INFO L97 edCorrectnessWitness]: Location invariant before [L764-L764] (((! multithreaded || ((0 <= x && x <= 1) && (x == 0 || x == 1))) && (! multithreaded || ((0 <= __unbuffered_p0_EAX && __unbuffered_p0_EAX <= 1) && (__unbuffered_p0_EAX == 0 || __unbuffered_p0_EAX == 1)))) && (! multithreaded || 0 <= __unbuffered_cnt)) && (! multithreaded || (((0 <= y && y <= 2) && y <= 127) && ((y == 0 || y == 1) || y == 2))) [2024-06-14 11:33:21,972 INFO L97 edCorrectnessWitness]: Location invariant before [L763-L763] (((! multithreaded || ((0 <= x && x <= 1) && (x == 0 || x == 1))) && (! multithreaded || ((0 <= __unbuffered_p0_EAX && __unbuffered_p0_EAX <= 1) && (__unbuffered_p0_EAX == 0 || __unbuffered_p0_EAX == 1)))) && (! multithreaded || 0 <= __unbuffered_cnt)) && (! multithreaded || (((0 <= y && y <= 2) && y <= 127) && ((y == 0 || y == 1) || y == 2))) [2024-06-14 11:33:21,972 INFO L103 edCorrectnessWitness]: ghost_variable multithreaded = 0 [2024-06-14 11:33:21,972 INFO L106 edCorrectnessWitness]: ghost_update [L761-L761] multithreaded = 1; [2024-06-14 11:33:22,032 INFO L177 MainTranslator]: Built tables and reachable declarations [2024-06-14 11:33:22,318 INFO L207 PostProcessor]: Analyzing one entry point: main [2024-06-14 11:33:22,326 INFO L202 MainTranslator]: Completed pre-run Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local [2024-06-14 11:33:22,394 INFO L207 PostProcessor]: Analyzing one entry point: main [2024-06-14 11:33:22,422 INFO L206 MainTranslator]: Completed translation [2024-06-14 11:33:22,424 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.06 11:33:22 WrapperNode [2024-06-14 11:33:22,424 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-06-14 11:33:22,425 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-06-14 11:33:22,425 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-06-14 11:33:22,426 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-06-14 11:33:22,431 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.06 11:33:22" (1/1) ... [2024-06-14 11:33:22,448 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.06 11:33:22" (1/1) ... [2024-06-14 11:33:22,462 INFO L138 Inliner]: procedures = 174, calls = 35, calls flagged for inlining = 5, calls inlined = 5, statements flattened = 56 [2024-06-14 11:33:22,464 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-06-14 11:33:22,465 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-06-14 11:33:22,465 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-06-14 11:33:22,465 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-06-14 11:33:22,472 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.06 11:33:22" (1/1) ... [2024-06-14 11:33:22,472 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.06 11:33:22" (1/1) ... [2024-06-14 11:33:22,474 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.06 11:33:22" (1/1) ... [2024-06-14 11:33:22,483 INFO L175 MemorySlicer]: Split 2 memory accesses to 1 slices as follows [2]. 100 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2]. The 0 writes are split as follows [0]. [2024-06-14 11:33:22,483 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.06 11:33:22" (1/1) ... [2024-06-14 11:33:22,484 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.06 11:33:22" (1/1) ... [2024-06-14 11:33:22,487 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.06 11:33:22" (1/1) ... [2024-06-14 11:33:22,488 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.06 11:33:22" (1/1) ... [2024-06-14 11:33:22,489 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.06 11:33:22" (1/1) ... [2024-06-14 11:33:22,489 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.06 11:33:22" (1/1) ... [2024-06-14 11:33:22,491 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-06-14 11:33:22,491 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-06-14 11:33:22,491 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-06-14 11:33:22,491 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-06-14 11:33:22,492 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.06 11:33:22" (1/1) ... [2024-06-14 11:33:22,499 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-06-14 11:33:22,505 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-06-14 11:33:22,517 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) [2024-06-14 11:33:22,524 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 [2024-06-14 11:33:22,545 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2024-06-14 11:33:22,546 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-06-14 11:33:22,546 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2024-06-14 11:33:22,546 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2024-06-14 11:33:22,546 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2024-06-14 11:33:22,547 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2024-06-14 11:33:22,547 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-06-14 11:33:22,547 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2024-06-14 11:33:22,547 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-06-14 11:33:22,547 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-06-14 11:33:22,548 WARN L214 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2024-06-14 11:33:22,662 INFO L244 CfgBuilder]: Building ICFG [2024-06-14 11:33:22,664 INFO L270 CfgBuilder]: Building CFG for each procedure with an implementation [2024-06-14 11:33:22,906 INFO L289 CfgBuilder]: Ommited future-live optimization because the input is a concurrent program. [2024-06-14 11:33:22,906 INFO L293 CfgBuilder]: Performing block encoding [2024-06-14 11:33:22,979 INFO L315 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-06-14 11:33:22,979 INFO L320 CfgBuilder]: Removed 0 assume(true) statements. [2024-06-14 11:33:22,981 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.06 11:33:22 BoogieIcfgContainer [2024-06-14 11:33:22,981 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-06-14 11:33:22,983 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-06-14 11:33:22,983 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-06-14 11:33:22,985 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-06-14 11:33:22,986 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 14.06 11:33:20" (1/4) ... [2024-06-14 11:33:22,986 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@72ae96c2 and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CORRECTNESS_WITNESS 14.06 11:33:22, skipping insertion in model container [2024-06-14 11:33:22,986 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 14.06 11:33:21" (2/4) ... [2024-06-14 11:33:22,987 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@72ae96c2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.06 11:33:22, skipping insertion in model container [2024-06-14 11:33:22,987 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.06 11:33:22" (3/4) ... [2024-06-14 11:33:22,987 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@72ae96c2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.06 11:33:22, skipping insertion in model container [2024-06-14 11:33:22,987 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.06 11:33:22" (4/4) ... [2024-06-14 11:33:22,988 INFO L112 eAbstractionObserver]: Analyzing ICFG safe033_tso.i [2024-06-14 11:33:23,001 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-06-14 11:33:23,001 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2024-06-14 11:33:23,001 INFO L522 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-06-14 11:33:23,024 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2024-06-14 11:33:23,046 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 38 places, 31 transitions, 70 flow [2024-06-14 11:33:23,062 INFO L124 PetriNetUnfolderBase]: 0/29 cut-off events. [2024-06-14 11:33:23,062 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-06-14 11:33:23,064 INFO L83 FinitePrefix]: Finished finitePrefix Result has 36 conditions, 29 events. 0/29 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 43 event pairs, 0 based on Foata normal form. 0/27 useless extension candidates. Maximal degree in co-relation 0. Up to 1 conditions per place. [2024-06-14 11:33:23,064 INFO L82 GeneralOperation]: Start removeDead. Operand has 38 places, 31 transitions, 70 flow [2024-06-14 11:33:23,066 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 30 places, 23 transitions, 52 flow [2024-06-14 11:33:23,073 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-06-14 11:33:23,077 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;@51c3161e, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-06-14 11:33:23,077 INFO L358 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2024-06-14 11:33:23,080 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-06-14 11:33:23,080 INFO L124 PetriNetUnfolderBase]: 0/7 cut-off events. [2024-06-14 11:33:23,080 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-06-14 11:33:23,080 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 11:33:23,081 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1] [2024-06-14 11:33:23,081 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 11:33:23,085 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 11:33:23,085 INFO L85 PathProgramCache]: Analyzing trace with hash 1558193034, now seen corresponding path program 1 times [2024-06-14 11:33:23,091 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 11:33:23,092 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1365552943] [2024-06-14 11:33:23,092 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 11:33:23,092 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 11:33:23,189 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 11:33:23,419 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 11:33:23,419 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 11:33:23,420 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1365552943] [2024-06-14 11:33:23,421 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1365552943] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 11:33:23,421 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 11:33:23,421 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-06-14 11:33:23,422 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [789251366] [2024-06-14 11:33:23,423 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 11:33:23,430 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-06-14 11:33:23,434 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 11:33:23,456 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-06-14 11:33:23,457 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-06-14 11:33:23,482 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 31 [2024-06-14 11:33:23,484 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 30 places, 23 transitions, 52 flow. Second operand has 3 states, 3 states have (on average 14.0) internal successors, (42), 3 states have internal predecessors, (42), 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) [2024-06-14 11:33:23,485 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 11:33:23,485 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 31 [2024-06-14 11:33:23,486 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 11:33:23,526 INFO L124 PetriNetUnfolderBase]: 83/183 cut-off events. [2024-06-14 11:33:23,527 INFO L125 PetriNetUnfolderBase]: For 3/3 co-relation queries the response was YES. [2024-06-14 11:33:23,528 INFO L83 FinitePrefix]: Finished finitePrefix Result has 357 conditions, 183 events. 83/183 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 17. Compared 709 event pairs, 43 based on Foata normal form. 1/172 useless extension candidates. Maximal degree in co-relation 343. Up to 153 conditions per place. [2024-06-14 11:33:23,530 INFO L140 encePairwiseOnDemand]: 26/31 looper letters, 20 selfloop transitions, 3 changer transitions 0/29 dead transitions. [2024-06-14 11:33:23,530 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 32 places, 29 transitions, 113 flow [2024-06-14 11:33:23,531 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-06-14 11:33:23,533 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-06-14 11:33:23,538 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 61 transitions. [2024-06-14 11:33:23,539 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6559139784946236 [2024-06-14 11:33:23,541 INFO L175 Difference]: Start difference. First operand has 30 places, 23 transitions, 52 flow. Second operand 3 states and 61 transitions. [2024-06-14 11:33:23,541 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 32 places, 29 transitions, 113 flow [2024-06-14 11:33:23,543 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 30 places, 29 transitions, 110 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-06-14 11:33:23,544 INFO L231 Difference]: Finished difference. Result has 31 places, 25 transitions, 71 flow [2024-06-14 11:33:23,546 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=50, PETRI_DIFFERENCE_MINUEND_PLACES=28, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=23, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=20, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=71, PETRI_PLACES=31, PETRI_TRANSITIONS=25} [2024-06-14 11:33:23,548 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 1 predicate places. [2024-06-14 11:33:23,549 INFO L495 AbstractCegarLoop]: Abstraction has has 31 places, 25 transitions, 71 flow [2024-06-14 11:33:23,549 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 14.0) internal successors, (42), 3 states have internal predecessors, (42), 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) [2024-06-14 11:33:23,549 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 11:33:23,549 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 11:33:23,549 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-06-14 11:33:23,550 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 11:33:23,550 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 11:33:23,550 INFO L85 PathProgramCache]: Analyzing trace with hash -1519960829, now seen corresponding path program 1 times [2024-06-14 11:33:23,551 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 11:33:23,551 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [269573795] [2024-06-14 11:33:23,551 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 11:33:23,551 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 11:33:23,560 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 11:33:23,659 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 11:33:23,660 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 11:33:23,660 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [269573795] [2024-06-14 11:33:23,660 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [269573795] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 11:33:23,660 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 11:33:23,660 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-06-14 11:33:23,661 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [719644009] [2024-06-14 11:33:23,661 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 11:33:23,662 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-06-14 11:33:23,662 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 11:33:23,662 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-06-14 11:33:23,662 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-06-14 11:33:23,682 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 31 [2024-06-14 11:33:23,683 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 31 places, 25 transitions, 71 flow. Second operand has 4 states, 4 states have (on average 13.75) internal successors, (55), 4 states have internal predecessors, (55), 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) [2024-06-14 11:33:23,683 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 11:33:23,683 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 31 [2024-06-14 11:33:23,683 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 11:33:23,727 INFO L124 PetriNetUnfolderBase]: 80/178 cut-off events. [2024-06-14 11:33:23,728 INFO L125 PetriNetUnfolderBase]: For 37/37 co-relation queries the response was YES. [2024-06-14 11:33:23,729 INFO L83 FinitePrefix]: Finished finitePrefix Result has 402 conditions, 178 events. 80/178 cut-off events. For 37/37 co-relation queries the response was YES. Maximal size of possible extension queue 16. Compared 680 event pairs, 34 based on Foata normal form. 2/175 useless extension candidates. Maximal degree in co-relation 387. Up to 139 conditions per place. [2024-06-14 11:33:23,730 INFO L140 encePairwiseOnDemand]: 25/31 looper letters, 24 selfloop transitions, 5 changer transitions 0/35 dead transitions. [2024-06-14 11:33:23,730 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 34 places, 35 transitions, 155 flow [2024-06-14 11:33:23,730 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-06-14 11:33:23,730 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-06-14 11:33:23,731 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 79 transitions. [2024-06-14 11:33:23,731 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6370967741935484 [2024-06-14 11:33:23,731 INFO L175 Difference]: Start difference. First operand has 31 places, 25 transitions, 71 flow. Second operand 4 states and 79 transitions. [2024-06-14 11:33:23,731 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 34 places, 35 transitions, 155 flow [2024-06-14 11:33:23,732 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 33 places, 35 transitions, 152 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-06-14 11:33:23,733 INFO L231 Difference]: Finished difference. Result has 34 places, 27 transitions, 95 flow [2024-06-14 11:33:23,733 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=68, PETRI_DIFFERENCE_MINUEND_PLACES=30, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=25, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=20, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=95, PETRI_PLACES=34, PETRI_TRANSITIONS=27} [2024-06-14 11:33:23,733 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 4 predicate places. [2024-06-14 11:33:23,734 INFO L495 AbstractCegarLoop]: Abstraction has has 34 places, 27 transitions, 95 flow [2024-06-14 11:33:23,734 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 13.75) internal successors, (55), 4 states have internal predecessors, (55), 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) [2024-06-14 11:33:23,734 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 11:33:23,734 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 11:33:23,734 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-06-14 11:33:23,735 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 11:33:23,735 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 11:33:23,735 INFO L85 PathProgramCache]: Analyzing trace with hash 1618377718, now seen corresponding path program 1 times [2024-06-14 11:33:23,735 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 11:33:23,735 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1412824467] [2024-06-14 11:33:23,736 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 11:33:23,736 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 11:33:23,747 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 11:33:23,831 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 11:33:23,832 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 11:33:23,832 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1412824467] [2024-06-14 11:33:23,832 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1412824467] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 11:33:23,832 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 11:33:23,832 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-06-14 11:33:23,833 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [732575820] [2024-06-14 11:33:23,833 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 11:33:23,833 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-06-14 11:33:23,833 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 11:33:23,834 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-06-14 11:33:23,834 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-06-14 11:33:23,858 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 31 [2024-06-14 11:33:23,858 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 34 places, 27 transitions, 95 flow. Second operand has 4 states, 4 states have (on average 13.5) internal successors, (54), 4 states have internal predecessors, (54), 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) [2024-06-14 11:33:23,858 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 11:33:23,859 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 31 [2024-06-14 11:33:23,859 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 11:33:23,925 INFO L124 PetriNetUnfolderBase]: 101/210 cut-off events. [2024-06-14 11:33:23,927 INFO L125 PetriNetUnfolderBase]: For 121/121 co-relation queries the response was YES. [2024-06-14 11:33:23,929 INFO L83 FinitePrefix]: Finished finitePrefix Result has 538 conditions, 210 events. 101/210 cut-off events. For 121/121 co-relation queries the response was YES. Maximal size of possible extension queue 18. Compared 779 event pairs, 48 based on Foata normal form. 1/209 useless extension candidates. Maximal degree in co-relation 521. Up to 182 conditions per place. [2024-06-14 11:33:23,931 INFO L140 encePairwiseOnDemand]: 26/31 looper letters, 24 selfloop transitions, 5 changer transitions 0/34 dead transitions. [2024-06-14 11:33:23,932 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 37 places, 34 transitions, 171 flow [2024-06-14 11:33:23,933 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-06-14 11:33:23,933 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-06-14 11:33:23,934 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 72 transitions. [2024-06-14 11:33:23,935 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5806451612903226 [2024-06-14 11:33:23,935 INFO L175 Difference]: Start difference. First operand has 34 places, 27 transitions, 95 flow. Second operand 4 states and 72 transitions. [2024-06-14 11:33:23,936 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 37 places, 34 transitions, 171 flow [2024-06-14 11:33:23,938 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 35 places, 34 transitions, 162 flow, removed 1 selfloop flow, removed 2 redundant places. [2024-06-14 11:33:23,940 INFO L231 Difference]: Finished difference. Result has 36 places, 29 transitions, 111 flow [2024-06-14 11:33:23,940 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=86, PETRI_DIFFERENCE_MINUEND_PLACES=32, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=27, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=22, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=111, PETRI_PLACES=36, PETRI_TRANSITIONS=29} [2024-06-14 11:33:23,941 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 6 predicate places. [2024-06-14 11:33:23,941 INFO L495 AbstractCegarLoop]: Abstraction has has 36 places, 29 transitions, 111 flow [2024-06-14 11:33:23,941 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 13.5) internal successors, (54), 4 states have internal predecessors, (54), 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) [2024-06-14 11:33:23,941 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 11:33:23,941 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 11:33:23,942 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-06-14 11:33:23,942 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 11:33:23,943 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 11:33:23,944 INFO L85 PathProgramCache]: Analyzing trace with hash 1589661287, now seen corresponding path program 1 times [2024-06-14 11:33:23,944 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 11:33:23,944 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1004150479] [2024-06-14 11:33:23,944 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 11:33:23,944 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 11:33:23,961 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 11:33:24,097 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 11:33:24,097 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 11:33:24,098 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1004150479] [2024-06-14 11:33:24,098 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1004150479] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 11:33:24,098 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 11:33:24,098 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-06-14 11:33:24,098 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1241067614] [2024-06-14 11:33:24,099 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 11:33:24,099 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-06-14 11:33:24,099 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 11:33:24,099 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-06-14 11:33:24,100 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2024-06-14 11:33:24,122 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 31 [2024-06-14 11:33:24,123 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 36 places, 29 transitions, 111 flow. Second operand has 6 states, 6 states have (on average 12.5) internal successors, (75), 6 states have internal predecessors, (75), 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) [2024-06-14 11:33:24,123 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 11:33:24,123 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 31 [2024-06-14 11:33:24,123 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 11:33:24,180 INFO L124 PetriNetUnfolderBase]: 97/206 cut-off events. [2024-06-14 11:33:24,181 INFO L125 PetriNetUnfolderBase]: For 177/177 co-relation queries the response was YES. [2024-06-14 11:33:24,181 INFO L83 FinitePrefix]: Finished finitePrefix Result has 555 conditions, 206 events. 97/206 cut-off events. For 177/177 co-relation queries the response was YES. Maximal size of possible extension queue 16. Compared 747 event pairs, 14 based on Foata normal form. 4/208 useless extension candidates. Maximal degree in co-relation 537. Up to 141 conditions per place. [2024-06-14 11:33:24,182 INFO L140 encePairwiseOnDemand]: 24/31 looper letters, 31 selfloop transitions, 8 changer transitions 0/44 dead transitions. [2024-06-14 11:33:24,182 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 40 places, 44 transitions, 223 flow [2024-06-14 11:33:24,182 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-14 11:33:24,183 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-14 11:33:24,183 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 105 transitions. [2024-06-14 11:33:24,183 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5645161290322581 [2024-06-14 11:33:24,184 INFO L175 Difference]: Start difference. First operand has 36 places, 29 transitions, 111 flow. Second operand 6 states and 105 transitions. [2024-06-14 11:33:24,184 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 40 places, 44 transitions, 223 flow [2024-06-14 11:33:24,184 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 38 places, 44 transitions, 214 flow, removed 1 selfloop flow, removed 2 redundant places. [2024-06-14 11:33:24,185 INFO L231 Difference]: Finished difference. Result has 40 places, 30 transitions, 127 flow [2024-06-14 11:33:24,185 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=96, PETRI_DIFFERENCE_MINUEND_PLACES=33, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=28, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=21, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=127, PETRI_PLACES=40, PETRI_TRANSITIONS=30} [2024-06-14 11:33:24,186 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 10 predicate places. [2024-06-14 11:33:24,186 INFO L495 AbstractCegarLoop]: Abstraction has has 40 places, 30 transitions, 127 flow [2024-06-14 11:33:24,186 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 12.5) internal successors, (75), 6 states have internal predecessors, (75), 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) [2024-06-14 11:33:24,186 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 11:33:24,187 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 11:33:24,187 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-06-14 11:33:24,187 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 11:33:24,187 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 11:33:24,188 INFO L85 PathProgramCache]: Analyzing trace with hash -1369897695, now seen corresponding path program 1 times [2024-06-14 11:33:24,188 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 11:33:24,188 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [320677075] [2024-06-14 11:33:24,188 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 11:33:24,188 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 11:33:24,194 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 11:33:24,257 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 11:33:24,257 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 11:33:24,258 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [320677075] [2024-06-14 11:33:24,258 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [320677075] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 11:33:24,258 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 11:33:24,258 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-06-14 11:33:24,258 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [841083656] [2024-06-14 11:33:24,258 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 11:33:24,259 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-06-14 11:33:24,259 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 11:33:24,259 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-06-14 11:33:24,260 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2024-06-14 11:33:24,277 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 31 [2024-06-14 11:33:24,278 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 40 places, 30 transitions, 127 flow. Second operand has 5 states, 5 states have (on average 13.2) internal successors, (66), 5 states have internal predecessors, (66), 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) [2024-06-14 11:33:24,278 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 11:33:24,278 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 31 [2024-06-14 11:33:24,278 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 11:33:24,313 INFO L124 PetriNetUnfolderBase]: 99/210 cut-off events. [2024-06-14 11:33:24,314 INFO L125 PetriNetUnfolderBase]: For 299/299 co-relation queries the response was YES. [2024-06-14 11:33:24,314 INFO L83 FinitePrefix]: Finished finitePrefix Result has 618 conditions, 210 events. 99/210 cut-off events. For 299/299 co-relation queries the response was YES. Maximal size of possible extension queue 17. Compared 784 event pairs, 26 based on Foata normal form. 2/208 useless extension candidates. Maximal degree in co-relation 598. Up to 152 conditions per place. [2024-06-14 11:33:24,315 INFO L140 encePairwiseOnDemand]: 24/31 looper letters, 27 selfloop transitions, 11 changer transitions 0/43 dead transitions. [2024-06-14 11:33:24,315 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 44 places, 43 transitions, 249 flow [2024-06-14 11:33:24,316 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-06-14 11:33:24,316 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-06-14 11:33:24,316 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 90 transitions. [2024-06-14 11:33:24,316 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5806451612903226 [2024-06-14 11:33:24,317 INFO L175 Difference]: Start difference. First operand has 40 places, 30 transitions, 127 flow. Second operand 5 states and 90 transitions. [2024-06-14 11:33:24,317 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 44 places, 43 transitions, 249 flow [2024-06-14 11:33:24,318 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 41 places, 43 transitions, 233 flow, removed 2 selfloop flow, removed 3 redundant places. [2024-06-14 11:33:24,319 INFO L231 Difference]: Finished difference. Result has 43 places, 36 transitions, 177 flow [2024-06-14 11:33:24,319 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=111, PETRI_DIFFERENCE_MINUEND_PLACES=37, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=30, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=21, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=177, PETRI_PLACES=43, PETRI_TRANSITIONS=36} [2024-06-14 11:33:24,319 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 13 predicate places. [2024-06-14 11:33:24,320 INFO L495 AbstractCegarLoop]: Abstraction has has 43 places, 36 transitions, 177 flow [2024-06-14 11:33:24,320 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 13.2) internal successors, (66), 5 states have internal predecessors, (66), 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) [2024-06-14 11:33:24,320 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 11:33:24,320 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 11:33:24,320 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-06-14 11:33:24,321 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 11:33:24,321 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 11:33:24,321 INFO L85 PathProgramCache]: Analyzing trace with hash -1747112811, now seen corresponding path program 1 times [2024-06-14 11:33:24,321 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 11:33:24,321 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1229826820] [2024-06-14 11:33:24,322 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 11:33:24,322 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 11:33:24,326 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 11:33:24,388 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 11:33:24,389 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 11:33:24,389 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1229826820] [2024-06-14 11:33:24,389 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1229826820] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 11:33:24,389 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 11:33:24,389 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-06-14 11:33:24,389 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1465555512] [2024-06-14 11:33:24,390 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 11:33:24,390 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-06-14 11:33:24,390 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 11:33:24,391 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-06-14 11:33:24,391 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2024-06-14 11:33:24,407 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 31 [2024-06-14 11:33:24,408 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 43 places, 36 transitions, 177 flow. Second operand has 5 states, 5 states have (on average 13.2) internal successors, (66), 5 states have internal predecessors, (66), 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) [2024-06-14 11:33:24,408 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 11:33:24,408 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 31 [2024-06-14 11:33:24,408 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 11:33:24,450 INFO L124 PetriNetUnfolderBase]: 102/219 cut-off events. [2024-06-14 11:33:24,451 INFO L125 PetriNetUnfolderBase]: For 414/414 co-relation queries the response was YES. [2024-06-14 11:33:24,451 INFO L83 FinitePrefix]: Finished finitePrefix Result has 728 conditions, 219 events. 102/219 cut-off events. For 414/414 co-relation queries the response was YES. Maximal size of possible extension queue 17. Compared 824 event pairs, 26 based on Foata normal form. 1/217 useless extension candidates. Maximal degree in co-relation 706. Up to 154 conditions per place. [2024-06-14 11:33:24,452 INFO L140 encePairwiseOnDemand]: 24/31 looper letters, 30 selfloop transitions, 13 changer transitions 0/48 dead transitions. [2024-06-14 11:33:24,452 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 47 places, 48 transitions, 312 flow [2024-06-14 11:33:24,452 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-06-14 11:33:24,453 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-06-14 11:33:24,453 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 94 transitions. [2024-06-14 11:33:24,453 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6064516129032258 [2024-06-14 11:33:24,453 INFO L175 Difference]: Start difference. First operand has 43 places, 36 transitions, 177 flow. Second operand 5 states and 94 transitions. [2024-06-14 11:33:24,453 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 47 places, 48 transitions, 312 flow [2024-06-14 11:33:24,455 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 45 places, 48 transitions, 293 flow, removed 6 selfloop flow, removed 2 redundant places. [2024-06-14 11:33:24,456 INFO L231 Difference]: Finished difference. Result has 46 places, 38 transitions, 204 flow [2024-06-14 11:33:24,456 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=160, PETRI_DIFFERENCE_MINUEND_PLACES=41, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=36, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=25, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=204, PETRI_PLACES=46, PETRI_TRANSITIONS=38} [2024-06-14 11:33:24,456 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 16 predicate places. [2024-06-14 11:33:24,457 INFO L495 AbstractCegarLoop]: Abstraction has has 46 places, 38 transitions, 204 flow [2024-06-14 11:33:24,457 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 13.2) internal successors, (66), 5 states have internal predecessors, (66), 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) [2024-06-14 11:33:24,457 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 11:33:24,457 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 11:33:24,457 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-06-14 11:33:24,457 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 11:33:24,458 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 11:33:24,458 INFO L85 PathProgramCache]: Analyzing trace with hash 410802025, now seen corresponding path program 2 times [2024-06-14 11:33:24,458 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 11:33:24,458 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1891324406] [2024-06-14 11:33:24,458 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 11:33:24,459 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 11:33:24,464 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 11:33:24,541 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 11:33:24,541 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 11:33:24,541 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1891324406] [2024-06-14 11:33:24,542 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1891324406] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 11:33:24,542 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 11:33:24,542 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-06-14 11:33:24,542 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1411104006] [2024-06-14 11:33:24,542 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 11:33:24,542 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-06-14 11:33:24,543 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 11:33:24,543 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-06-14 11:33:24,543 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2024-06-14 11:33:24,560 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 31 [2024-06-14 11:33:24,561 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 46 places, 38 transitions, 204 flow. Second operand has 5 states, 5 states have (on average 13.2) internal successors, (66), 5 states have internal predecessors, (66), 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) [2024-06-14 11:33:24,561 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 11:33:24,561 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 31 [2024-06-14 11:33:24,561 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 11:33:24,595 INFO L124 PetriNetUnfolderBase]: 97/208 cut-off events. [2024-06-14 11:33:24,595 INFO L125 PetriNetUnfolderBase]: For 494/494 co-relation queries the response was YES. [2024-06-14 11:33:24,596 INFO L83 FinitePrefix]: Finished finitePrefix Result has 713 conditions, 208 events. 97/208 cut-off events. For 494/494 co-relation queries the response was YES. Maximal size of possible extension queue 16. Compared 761 event pairs, 27 based on Foata normal form. 2/206 useless extension candidates. Maximal degree in co-relation 690. Up to 149 conditions per place. [2024-06-14 11:33:24,597 INFO L140 encePairwiseOnDemand]: 24/31 looper letters, 27 selfloop transitions, 12 changer transitions 0/44 dead transitions. [2024-06-14 11:33:24,598 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 50 places, 44 transitions, 296 flow [2024-06-14 11:33:24,598 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-06-14 11:33:24,598 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-06-14 11:33:24,598 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 89 transitions. [2024-06-14 11:33:24,599 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5741935483870968 [2024-06-14 11:33:24,599 INFO L175 Difference]: Start difference. First operand has 46 places, 38 transitions, 204 flow. Second operand 5 states and 89 transitions. [2024-06-14 11:33:24,599 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 50 places, 44 transitions, 296 flow [2024-06-14 11:33:24,600 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 48 places, 44 transitions, 277 flow, removed 2 selfloop flow, removed 2 redundant places. [2024-06-14 11:33:24,601 INFO L231 Difference]: Finished difference. Result has 49 places, 38 transitions, 216 flow [2024-06-14 11:33:24,601 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=185, PETRI_DIFFERENCE_MINUEND_PLACES=44, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=38, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=26, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=216, PETRI_PLACES=49, PETRI_TRANSITIONS=38} [2024-06-14 11:33:24,602 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 19 predicate places. [2024-06-14 11:33:24,602 INFO L495 AbstractCegarLoop]: Abstraction has has 49 places, 38 transitions, 216 flow [2024-06-14 11:33:24,602 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 13.2) internal successors, (66), 5 states have internal predecessors, (66), 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) [2024-06-14 11:33:24,602 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 11:33:24,602 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 11:33:24,602 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-06-14 11:33:24,603 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 11:33:24,603 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 11:33:24,603 INFO L85 PathProgramCache]: Analyzing trace with hash 2083295168, now seen corresponding path program 1 times [2024-06-14 11:33:24,603 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 11:33:24,603 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1039267069] [2024-06-14 11:33:24,604 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 11:33:24,604 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 11:33:24,608 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 11:33:24,678 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 11:33:24,678 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 11:33:24,678 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1039267069] [2024-06-14 11:33:24,678 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1039267069] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 11:33:24,678 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 11:33:24,679 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-06-14 11:33:24,679 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [10357609] [2024-06-14 11:33:24,679 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 11:33:24,679 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-06-14 11:33:24,679 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 11:33:24,680 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-06-14 11:33:24,680 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2024-06-14 11:33:24,702 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 31 [2024-06-14 11:33:24,702 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 49 places, 38 transitions, 216 flow. Second operand has 6 states, 6 states have (on average 13.0) internal successors, (78), 6 states have internal predecessors, (78), 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) [2024-06-14 11:33:24,702 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 11:33:24,702 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 31 [2024-06-14 11:33:24,703 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 11:33:24,748 INFO L124 PetriNetUnfolderBase]: 98/211 cut-off events. [2024-06-14 11:33:24,749 INFO L125 PetriNetUnfolderBase]: For 654/654 co-relation queries the response was YES. [2024-06-14 11:33:24,749 INFO L83 FinitePrefix]: Finished finitePrefix Result has 730 conditions, 211 events. 98/211 cut-off events. For 654/654 co-relation queries the response was YES. Maximal size of possible extension queue 16. Compared 780 event pairs, 26 based on Foata normal form. 4/211 useless extension candidates. Maximal degree in co-relation 706. Up to 140 conditions per place. [2024-06-14 11:33:24,750 INFO L140 encePairwiseOnDemand]: 24/31 looper letters, 27 selfloop transitions, 15 changer transitions 0/47 dead transitions. [2024-06-14 11:33:24,750 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 54 places, 47 transitions, 322 flow [2024-06-14 11:33:24,751 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-14 11:33:24,751 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-14 11:33:24,751 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 103 transitions. [2024-06-14 11:33:24,751 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.553763440860215 [2024-06-14 11:33:24,751 INFO L175 Difference]: Start difference. First operand has 49 places, 38 transitions, 216 flow. Second operand 6 states and 103 transitions. [2024-06-14 11:33:24,752 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 54 places, 47 transitions, 322 flow [2024-06-14 11:33:24,753 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 49 places, 47 transitions, 286 flow, removed 0 selfloop flow, removed 5 redundant places. [2024-06-14 11:33:24,753 INFO L231 Difference]: Finished difference. Result has 50 places, 39 transitions, 221 flow [2024-06-14 11:33:24,754 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=180, PETRI_DIFFERENCE_MINUEND_PLACES=44, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=38, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=23, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=221, PETRI_PLACES=50, PETRI_TRANSITIONS=39} [2024-06-14 11:33:24,754 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 20 predicate places. [2024-06-14 11:33:24,754 INFO L495 AbstractCegarLoop]: Abstraction has has 50 places, 39 transitions, 221 flow [2024-06-14 11:33:24,754 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 13.0) internal successors, (78), 6 states have internal predecessors, (78), 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) [2024-06-14 11:33:24,755 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 11:33:24,755 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 11:33:24,755 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-06-14 11:33:24,755 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 11:33:24,755 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 11:33:24,756 INFO L85 PathProgramCache]: Analyzing trace with hash 946235976, now seen corresponding path program 1 times [2024-06-14 11:33:24,756 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 11:33:24,756 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1017800068] [2024-06-14 11:33:24,756 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 11:33:24,756 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 11:33:24,761 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 11:33:24,828 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 11:33:24,828 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 11:33:24,828 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1017800068] [2024-06-14 11:33:24,828 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1017800068] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 11:33:24,828 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 11:33:24,829 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-06-14 11:33:24,829 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1873936174] [2024-06-14 11:33:24,829 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 11:33:24,829 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-06-14 11:33:24,829 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 11:33:24,830 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-06-14 11:33:24,830 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-06-14 11:33:24,855 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 31 [2024-06-14 11:33:24,855 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 50 places, 39 transitions, 221 flow. Second operand has 6 states, 6 states have (on average 13.0) internal successors, (78), 6 states have internal predecessors, (78), 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) [2024-06-14 11:33:24,856 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 11:33:24,856 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 31 [2024-06-14 11:33:24,856 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 11:33:24,907 INFO L124 PetriNetUnfolderBase]: 101/221 cut-off events. [2024-06-14 11:33:24,908 INFO L125 PetriNetUnfolderBase]: For 671/671 co-relation queries the response was YES. [2024-06-14 11:33:24,908 INFO L83 FinitePrefix]: Finished finitePrefix Result has 779 conditions, 221 events. 101/221 cut-off events. For 671/671 co-relation queries the response was YES. Maximal size of possible extension queue 17. Compared 827 event pairs, 21 based on Foata normal form. 1/220 useless extension candidates. Maximal degree in co-relation 754. Up to 165 conditions per place. [2024-06-14 11:33:24,909 INFO L140 encePairwiseOnDemand]: 24/31 looper letters, 40 selfloop transitions, 9 changer transitions 0/54 dead transitions. [2024-06-14 11:33:24,909 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 55 places, 54 transitions, 361 flow [2024-06-14 11:33:24,909 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-14 11:33:24,909 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-14 11:33:24,910 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 105 transitions. [2024-06-14 11:33:24,910 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5645161290322581 [2024-06-14 11:33:24,910 INFO L175 Difference]: Start difference. First operand has 50 places, 39 transitions, 221 flow. Second operand 6 states and 105 transitions. [2024-06-14 11:33:24,910 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 55 places, 54 transitions, 361 flow [2024-06-14 11:33:24,912 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 51 places, 54 transitions, 326 flow, removed 4 selfloop flow, removed 4 redundant places. [2024-06-14 11:33:24,912 INFO L231 Difference]: Finished difference. Result has 52 places, 41 transitions, 223 flow [2024-06-14 11:33:24,912 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=186, PETRI_DIFFERENCE_MINUEND_PLACES=46, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=39, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=30, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=223, PETRI_PLACES=52, PETRI_TRANSITIONS=41} [2024-06-14 11:33:24,913 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 22 predicate places. [2024-06-14 11:33:24,913 INFO L495 AbstractCegarLoop]: Abstraction has has 52 places, 41 transitions, 223 flow [2024-06-14 11:33:24,913 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 13.0) internal successors, (78), 6 states have internal predecessors, (78), 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) [2024-06-14 11:33:24,913 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 11:33:24,913 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 11:33:24,914 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-06-14 11:33:24,914 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 11:33:24,914 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 11:33:24,914 INFO L85 PathProgramCache]: Analyzing trace with hash -152584530, now seen corresponding path program 2 times [2024-06-14 11:33:24,914 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 11:33:24,914 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1459169595] [2024-06-14 11:33:24,915 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 11:33:24,915 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 11:33:24,919 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 11:33:25,006 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 11:33:25,006 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 11:33:25,006 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1459169595] [2024-06-14 11:33:25,007 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1459169595] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 11:33:25,007 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 11:33:25,007 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-06-14 11:33:25,007 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1951923169] [2024-06-14 11:33:25,007 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 11:33:25,007 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-06-14 11:33:25,008 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 11:33:25,008 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-06-14 11:33:25,008 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2024-06-14 11:33:25,032 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 31 [2024-06-14 11:33:25,032 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 52 places, 41 transitions, 223 flow. Second operand has 6 states, 6 states have (on average 13.0) internal successors, (78), 6 states have internal predecessors, (78), 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) [2024-06-14 11:33:25,032 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 11:33:25,032 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 31 [2024-06-14 11:33:25,033 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 11:33:25,077 INFO L124 PetriNetUnfolderBase]: 109/236 cut-off events. [2024-06-14 11:33:25,077 INFO L125 PetriNetUnfolderBase]: For 849/849 co-relation queries the response was YES. [2024-06-14 11:33:25,078 INFO L83 FinitePrefix]: Finished finitePrefix Result has 849 conditions, 236 events. 109/236 cut-off events. For 849/849 co-relation queries the response was YES. Maximal size of possible extension queue 20. Compared 903 event pairs, 23 based on Foata normal form. 1/233 useless extension candidates. Maximal degree in co-relation 823. Up to 136 conditions per place. [2024-06-14 11:33:25,079 INFO L140 encePairwiseOnDemand]: 23/31 looper letters, 34 selfloop transitions, 21 changer transitions 0/60 dead transitions. [2024-06-14 11:33:25,079 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 57 places, 60 transitions, 439 flow [2024-06-14 11:33:25,080 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-14 11:33:25,080 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-14 11:33:25,080 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 112 transitions. [2024-06-14 11:33:25,080 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6021505376344086 [2024-06-14 11:33:25,080 INFO L175 Difference]: Start difference. First operand has 52 places, 41 transitions, 223 flow. Second operand 6 states and 112 transitions. [2024-06-14 11:33:25,081 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 57 places, 60 transitions, 439 flow [2024-06-14 11:33:25,082 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 53 places, 60 transitions, 418 flow, removed 3 selfloop flow, removed 4 redundant places. [2024-06-14 11:33:25,083 INFO L231 Difference]: Finished difference. Result has 54 places, 48 transitions, 297 flow [2024-06-14 11:33:25,084 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=202, PETRI_DIFFERENCE_MINUEND_PLACES=48, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=41, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=17, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=24, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=297, PETRI_PLACES=54, PETRI_TRANSITIONS=48} [2024-06-14 11:33:25,084 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 24 predicate places. [2024-06-14 11:33:25,084 INFO L495 AbstractCegarLoop]: Abstraction has has 54 places, 48 transitions, 297 flow [2024-06-14 11:33:25,085 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 13.0) internal successors, (78), 6 states have internal predecessors, (78), 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) [2024-06-14 11:33:25,085 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 11:33:25,085 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 11:33:25,085 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-06-14 11:33:25,085 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 11:33:25,085 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 11:33:25,086 INFO L85 PathProgramCache]: Analyzing trace with hash 931812566, now seen corresponding path program 3 times [2024-06-14 11:33:25,086 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 11:33:25,086 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1683871794] [2024-06-14 11:33:25,086 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 11:33:25,086 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 11:33:25,091 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 11:33:25,156 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 11:33:25,156 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 11:33:25,156 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1683871794] [2024-06-14 11:33:25,156 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1683871794] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 11:33:25,156 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 11:33:25,157 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-06-14 11:33:25,157 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1622502905] [2024-06-14 11:33:25,157 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 11:33:25,157 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-06-14 11:33:25,157 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 11:33:25,158 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-06-14 11:33:25,158 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2024-06-14 11:33:25,176 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 31 [2024-06-14 11:33:25,177 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 54 places, 48 transitions, 297 flow. Second operand has 6 states, 6 states have (on average 13.0) internal successors, (78), 6 states have internal predecessors, (78), 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) [2024-06-14 11:33:25,177 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 11:33:25,177 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 31 [2024-06-14 11:33:25,177 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 11:33:25,221 INFO L124 PetriNetUnfolderBase]: 105/226 cut-off events. [2024-06-14 11:33:25,222 INFO L125 PetriNetUnfolderBase]: For 1039/1039 co-relation queries the response was YES. [2024-06-14 11:33:25,222 INFO L83 FinitePrefix]: Finished finitePrefix Result has 866 conditions, 226 events. 105/226 cut-off events. For 1039/1039 co-relation queries the response was YES. Maximal size of possible extension queue 19. Compared 884 event pairs, 27 based on Foata normal form. 2/222 useless extension candidates. Maximal degree in co-relation 839. Up to 133 conditions per place. [2024-06-14 11:33:25,223 INFO L140 encePairwiseOnDemand]: 23/31 looper letters, 33 selfloop transitions, 18 changer transitions 0/56 dead transitions. [2024-06-14 11:33:25,223 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 59 places, 56 transitions, 437 flow [2024-06-14 11:33:25,223 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-14 11:33:25,224 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-14 11:33:25,224 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 107 transitions. [2024-06-14 11:33:25,224 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5752688172043011 [2024-06-14 11:33:25,224 INFO L175 Difference]: Start difference. First operand has 54 places, 48 transitions, 297 flow. Second operand 6 states and 107 transitions. [2024-06-14 11:33:25,224 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 59 places, 56 transitions, 437 flow [2024-06-14 11:33:25,226 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 58 places, 56 transitions, 413 flow, removed 9 selfloop flow, removed 1 redundant places. [2024-06-14 11:33:25,227 INFO L231 Difference]: Finished difference. Result has 59 places, 48 transitions, 315 flow [2024-06-14 11:33:25,227 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=273, PETRI_DIFFERENCE_MINUEND_PLACES=53, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=48, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=18, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=30, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=315, PETRI_PLACES=59, PETRI_TRANSITIONS=48} [2024-06-14 11:33:25,228 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 29 predicate places. [2024-06-14 11:33:25,228 INFO L495 AbstractCegarLoop]: Abstraction has has 59 places, 48 transitions, 315 flow [2024-06-14 11:33:25,228 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 13.0) internal successors, (78), 6 states have internal predecessors, (78), 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) [2024-06-14 11:33:25,228 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 11:33:25,228 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 11:33:25,229 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2024-06-14 11:33:25,229 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 11:33:25,229 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 11:33:25,229 INFO L85 PathProgramCache]: Analyzing trace with hash -1945649245, now seen corresponding path program 1 times [2024-06-14 11:33:25,229 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 11:33:25,230 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1793789949] [2024-06-14 11:33:25,230 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 11:33:25,230 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 11:33:25,235 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 11:33:25,311 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 11:33:25,311 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 11:33:25,311 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1793789949] [2024-06-14 11:33:25,312 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1793789949] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 11:33:25,312 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 11:33:25,312 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-06-14 11:33:25,312 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [74904777] [2024-06-14 11:33:25,312 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 11:33:25,312 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-06-14 11:33:25,313 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 11:33:25,313 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-06-14 11:33:25,313 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2024-06-14 11:33:25,335 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 31 [2024-06-14 11:33:25,336 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 59 places, 48 transitions, 315 flow. Second operand has 6 states, 6 states have (on average 13.166666666666666) internal successors, (79), 6 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:33:25,336 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 11:33:25,336 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 31 [2024-06-14 11:33:25,336 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 11:33:25,382 INFO L124 PetriNetUnfolderBase]: 108/235 cut-off events. [2024-06-14 11:33:25,382 INFO L125 PetriNetUnfolderBase]: For 1223/1223 co-relation queries the response was YES. [2024-06-14 11:33:25,383 INFO L83 FinitePrefix]: Finished finitePrefix Result has 935 conditions, 235 events. 108/235 cut-off events. For 1223/1223 co-relation queries the response was YES. Maximal size of possible extension queue 21. Compared 941 event pairs, 28 based on Foata normal form. 1/230 useless extension candidates. Maximal degree in co-relation 905. Up to 154 conditions per place. [2024-06-14 11:33:25,384 INFO L140 encePairwiseOnDemand]: 23/31 looper letters, 33 selfloop transitions, 18 changer transitions 0/56 dead transitions. [2024-06-14 11:33:25,384 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 63 places, 56 transitions, 449 flow [2024-06-14 11:33:25,385 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-06-14 11:33:25,385 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-06-14 11:33:25,385 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 92 transitions. [2024-06-14 11:33:25,385 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5935483870967742 [2024-06-14 11:33:25,385 INFO L175 Difference]: Start difference. First operand has 59 places, 48 transitions, 315 flow. Second operand 5 states and 92 transitions. [2024-06-14 11:33:25,386 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 63 places, 56 transitions, 449 flow [2024-06-14 11:33:25,388 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 58 places, 56 transitions, 401 flow, removed 3 selfloop flow, removed 5 redundant places. [2024-06-14 11:33:25,388 INFO L231 Difference]: Finished difference. Result has 59 places, 50 transitions, 336 flow [2024-06-14 11:33:25,389 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=269, PETRI_DIFFERENCE_MINUEND_PLACES=54, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=48, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=16, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=30, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=336, PETRI_PLACES=59, PETRI_TRANSITIONS=50} [2024-06-14 11:33:25,389 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 29 predicate places. [2024-06-14 11:33:25,389 INFO L495 AbstractCegarLoop]: Abstraction has has 59 places, 50 transitions, 336 flow [2024-06-14 11:33:25,390 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 13.166666666666666) internal successors, (79), 6 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:33:25,390 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 11:33:25,390 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 11:33:25,390 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2024-06-14 11:33:25,390 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 11:33:25,390 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 11:33:25,391 INFO L85 PathProgramCache]: Analyzing trace with hash -1823471679, now seen corresponding path program 2 times [2024-06-14 11:33:25,391 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 11:33:25,391 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1642151990] [2024-06-14 11:33:25,391 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 11:33:25,391 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 11:33:25,396 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 11:33:25,457 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 11:33:25,457 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 11:33:25,457 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1642151990] [2024-06-14 11:33:25,457 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1642151990] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 11:33:25,458 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 11:33:25,458 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-06-14 11:33:25,458 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1983704441] [2024-06-14 11:33:25,458 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 11:33:25,458 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-06-14 11:33:25,458 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 11:33:25,459 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-06-14 11:33:25,459 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2024-06-14 11:33:25,480 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 31 [2024-06-14 11:33:25,480 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 59 places, 50 transitions, 336 flow. Second operand has 6 states, 6 states have (on average 13.166666666666666) internal successors, (79), 6 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:33:25,480 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 11:33:25,480 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 31 [2024-06-14 11:33:25,481 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 11:33:25,538 INFO L124 PetriNetUnfolderBase]: 111/240 cut-off events. [2024-06-14 11:33:25,538 INFO L125 PetriNetUnfolderBase]: For 1373/1373 co-relation queries the response was YES. [2024-06-14 11:33:25,539 INFO L83 FinitePrefix]: Finished finitePrefix Result has 965 conditions, 240 events. 111/240 cut-off events. For 1373/1373 co-relation queries the response was YES. Maximal size of possible extension queue 23. Compared 969 event pairs, 28 based on Foata normal form. 1/235 useless extension candidates. Maximal degree in co-relation 935. Up to 141 conditions per place. [2024-06-14 11:33:25,540 INFO L140 encePairwiseOnDemand]: 23/31 looper letters, 30 selfloop transitions, 25 changer transitions 0/60 dead transitions. [2024-06-14 11:33:25,540 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 64 places, 60 transitions, 508 flow [2024-06-14 11:33:25,540 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-14 11:33:25,540 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-14 11:33:25,541 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 107 transitions. [2024-06-14 11:33:25,541 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5752688172043011 [2024-06-14 11:33:25,541 INFO L175 Difference]: Start difference. First operand has 59 places, 50 transitions, 336 flow. Second operand 6 states and 107 transitions. [2024-06-14 11:33:25,541 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 64 places, 60 transitions, 508 flow [2024-06-14 11:33:25,543 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 60 places, 60 transitions, 467 flow, removed 4 selfloop flow, removed 4 redundant places. [2024-06-14 11:33:25,544 INFO L231 Difference]: Finished difference. Result has 61 places, 52 transitions, 372 flow [2024-06-14 11:33:25,544 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=297, PETRI_DIFFERENCE_MINUEND_PLACES=55, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=50, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=23, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=27, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=372, PETRI_PLACES=61, PETRI_TRANSITIONS=52} [2024-06-14 11:33:25,545 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 31 predicate places. [2024-06-14 11:33:25,545 INFO L495 AbstractCegarLoop]: Abstraction has has 61 places, 52 transitions, 372 flow [2024-06-14 11:33:25,545 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 13.166666666666666) internal successors, (79), 6 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:33:25,545 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 11:33:25,546 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 11:33:25,546 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2024-06-14 11:33:25,546 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 11:33:25,546 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 11:33:25,546 INFO L85 PathProgramCache]: Analyzing trace with hash -1823679069, now seen corresponding path program 3 times [2024-06-14 11:33:25,546 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 11:33:25,547 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [430215167] [2024-06-14 11:33:25,547 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 11:33:25,547 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 11:33:25,551 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 11:33:25,615 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 11:33:25,615 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 11:33:25,615 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [430215167] [2024-06-14 11:33:25,615 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [430215167] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 11:33:25,615 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 11:33:25,616 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-06-14 11:33:25,616 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1119534559] [2024-06-14 11:33:25,616 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 11:33:25,616 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-06-14 11:33:25,616 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 11:33:25,617 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-06-14 11:33:25,617 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2024-06-14 11:33:25,638 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 31 [2024-06-14 11:33:25,638 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 61 places, 52 transitions, 372 flow. Second operand has 6 states, 6 states have (on average 13.166666666666666) internal successors, (79), 6 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:33:25,639 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 11:33:25,639 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 31 [2024-06-14 11:33:25,639 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 11:33:25,679 INFO L124 PetriNetUnfolderBase]: 109/237 cut-off events. [2024-06-14 11:33:25,680 INFO L125 PetriNetUnfolderBase]: For 1361/1361 co-relation queries the response was YES. [2024-06-14 11:33:25,680 INFO L83 FinitePrefix]: Finished finitePrefix Result has 954 conditions, 237 events. 109/237 cut-off events. For 1361/1361 co-relation queries the response was YES. Maximal size of possible extension queue 23. Compared 953 event pairs, 28 based on Foata normal form. 1/232 useless extension candidates. Maximal degree in co-relation 924. Up to 139 conditions per place. [2024-06-14 11:33:25,681 INFO L140 encePairwiseOnDemand]: 24/31 looper letters, 32 selfloop transitions, 22 changer transitions 0/59 dead transitions. [2024-06-14 11:33:25,681 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 66 places, 59 transitions, 496 flow [2024-06-14 11:33:25,682 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-14 11:33:25,682 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-14 11:33:25,682 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 105 transitions. [2024-06-14 11:33:25,682 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5645161290322581 [2024-06-14 11:33:25,683 INFO L175 Difference]: Start difference. First operand has 61 places, 52 transitions, 372 flow. Second operand 6 states and 105 transitions. [2024-06-14 11:33:25,683 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 66 places, 59 transitions, 496 flow [2024-06-14 11:33:25,685 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 61 places, 59 transitions, 416 flow, removed 7 selfloop flow, removed 5 redundant places. [2024-06-14 11:33:25,686 INFO L231 Difference]: Finished difference. Result has 62 places, 52 transitions, 342 flow [2024-06-14 11:33:25,686 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=292, PETRI_DIFFERENCE_MINUEND_PLACES=56, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=52, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=22, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=30, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=342, PETRI_PLACES=62, PETRI_TRANSITIONS=52} [2024-06-14 11:33:25,686 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 32 predicate places. [2024-06-14 11:33:25,687 INFO L495 AbstractCegarLoop]: Abstraction has has 62 places, 52 transitions, 342 flow [2024-06-14 11:33:25,687 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 13.166666666666666) internal successors, (79), 6 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:33:25,687 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 11:33:25,687 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 11:33:25,687 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2024-06-14 11:33:25,687 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 11:33:25,688 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 11:33:25,688 INFO L85 PathProgramCache]: Analyzing trace with hash 591580353, now seen corresponding path program 1 times [2024-06-14 11:33:25,688 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 11:33:25,688 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1879292055] [2024-06-14 11:33:25,688 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 11:33:25,688 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 11:33:25,692 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 11:33:25,762 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 11:33:25,762 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 11:33:25,762 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1879292055] [2024-06-14 11:33:25,762 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1879292055] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 11:33:25,762 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 11:33:25,763 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-06-14 11:33:25,763 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [599548437] [2024-06-14 11:33:25,763 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 11:33:25,763 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-06-14 11:33:25,763 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 11:33:25,764 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-06-14 11:33:25,764 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2024-06-14 11:33:25,785 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 31 [2024-06-14 11:33:25,786 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 62 places, 52 transitions, 342 flow. Second operand has 6 states, 6 states have (on average 13.166666666666666) internal successors, (79), 6 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:33:25,786 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 11:33:25,786 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 31 [2024-06-14 11:33:25,786 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 11:33:25,839 INFO L124 PetriNetUnfolderBase]: 113/252 cut-off events. [2024-06-14 11:33:25,840 INFO L125 PetriNetUnfolderBase]: For 1478/1478 co-relation queries the response was YES. [2024-06-14 11:33:25,840 INFO L83 FinitePrefix]: Finished finitePrefix Result has 977 conditions, 252 events. 113/252 cut-off events. For 1478/1478 co-relation queries the response was YES. Maximal size of possible extension queue 25. Compared 1020 event pairs, 26 based on Foata normal form. 2/250 useless extension candidates. Maximal degree in co-relation 947. Up to 173 conditions per place. [2024-06-14 11:33:25,841 INFO L140 encePairwiseOnDemand]: 24/31 looper letters, 43 selfloop transitions, 13 changer transitions 0/61 dead transitions. [2024-06-14 11:33:25,841 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 67 places, 61 transitions, 478 flow [2024-06-14 11:33:25,842 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-14 11:33:25,842 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-14 11:33:25,842 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 103 transitions. [2024-06-14 11:33:25,842 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.553763440860215 [2024-06-14 11:33:25,843 INFO L175 Difference]: Start difference. First operand has 62 places, 52 transitions, 342 flow. Second operand 6 states and 103 transitions. [2024-06-14 11:33:25,843 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 67 places, 61 transitions, 478 flow [2024-06-14 11:33:25,845 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 62 places, 61 transitions, 419 flow, removed 3 selfloop flow, removed 5 redundant places. [2024-06-14 11:33:25,846 INFO L231 Difference]: Finished difference. Result has 63 places, 53 transitions, 321 flow [2024-06-14 11:33:25,846 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=283, PETRI_DIFFERENCE_MINUEND_PLACES=57, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=52, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=39, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=321, PETRI_PLACES=63, PETRI_TRANSITIONS=53} [2024-06-14 11:33:25,846 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 33 predicate places. [2024-06-14 11:33:25,847 INFO L495 AbstractCegarLoop]: Abstraction has has 63 places, 53 transitions, 321 flow [2024-06-14 11:33:25,847 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 13.166666666666666) internal successors, (79), 6 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:33:25,847 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 11:33:25,847 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 11:33:25,847 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2024-06-14 11:33:25,847 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 11:33:25,848 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 11:33:25,848 INFO L85 PathProgramCache]: Analyzing trace with hash 1066555069, now seen corresponding path program 2 times [2024-06-14 11:33:25,848 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 11:33:25,848 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [74599366] [2024-06-14 11:33:25,848 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 11:33:25,848 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 11:33:25,852 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 11:33:25,915 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 11:33:25,915 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 11:33:25,915 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [74599366] [2024-06-14 11:33:25,915 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [74599366] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 11:33:25,916 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 11:33:25,916 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-06-14 11:33:25,916 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [554754043] [2024-06-14 11:33:25,916 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 11:33:25,916 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-06-14 11:33:25,916 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 11:33:25,917 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-06-14 11:33:25,917 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-06-14 11:33:25,944 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 31 [2024-06-14 11:33:25,945 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 63 places, 53 transitions, 321 flow. Second operand has 6 states, 6 states have (on average 13.166666666666666) internal successors, (79), 6 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:33:25,945 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 11:33:25,945 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 31 [2024-06-14 11:33:25,945 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 11:33:25,996 INFO L124 PetriNetUnfolderBase]: 110/247 cut-off events. [2024-06-14 11:33:25,996 INFO L125 PetriNetUnfolderBase]: For 1412/1412 co-relation queries the response was YES. [2024-06-14 11:33:25,997 INFO L83 FinitePrefix]: Finished finitePrefix Result has 924 conditions, 247 events. 110/247 cut-off events. For 1412/1412 co-relation queries the response was YES. Maximal size of possible extension queue 25. Compared 998 event pairs, 23 based on Foata normal form. 2/245 useless extension candidates. Maximal degree in co-relation 893. Up to 148 conditions per place. [2024-06-14 11:33:25,998 INFO L140 encePairwiseOnDemand]: 25/31 looper letters, 44 selfloop transitions, 13 changer transitions 0/62 dead transitions. [2024-06-14 11:33:25,998 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 68 places, 62 transitions, 455 flow [2024-06-14 11:33:25,998 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-14 11:33:25,998 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-14 11:33:25,999 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 101 transitions. [2024-06-14 11:33:25,999 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.543010752688172 [2024-06-14 11:33:25,999 INFO L175 Difference]: Start difference. First operand has 63 places, 53 transitions, 321 flow. Second operand 6 states and 101 transitions. [2024-06-14 11:33:25,999 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 68 places, 62 transitions, 455 flow [2024-06-14 11:33:26,002 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 64 places, 62 transitions, 427 flow, removed 2 selfloop flow, removed 4 redundant places. [2024-06-14 11:33:26,003 INFO L231 Difference]: Finished difference. Result has 65 places, 53 transitions, 323 flow [2024-06-14 11:33:26,003 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=293, PETRI_DIFFERENCE_MINUEND_PLACES=59, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=53, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=13, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=40, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=323, PETRI_PLACES=65, PETRI_TRANSITIONS=53} [2024-06-14 11:33:26,003 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 35 predicate places. [2024-06-14 11:33:26,003 INFO L495 AbstractCegarLoop]: Abstraction has has 65 places, 53 transitions, 323 flow [2024-06-14 11:33:26,004 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 13.166666666666666) internal successors, (79), 6 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:33:26,004 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 11:33:26,004 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 11:33:26,004 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2024-06-14 11:33:26,004 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 11:33:26,004 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 11:33:26,005 INFO L85 PathProgramCache]: Analyzing trace with hash -983267885, now seen corresponding path program 1 times [2024-06-14 11:33:26,005 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 11:33:26,005 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1787368182] [2024-06-14 11:33:26,005 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 11:33:26,005 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 11:33:26,010 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 11:33:26,098 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 11:33:26,098 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 11:33:26,098 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1787368182] [2024-06-14 11:33:26,098 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1787368182] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 11:33:26,099 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 11:33:26,099 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-14 11:33:26,099 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1472507501] [2024-06-14 11:33:26,099 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 11:33:26,099 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-14 11:33:26,100 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 11:33:26,100 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-14 11:33:26,100 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2024-06-14 11:33:26,141 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 31 [2024-06-14 11:33:26,142 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 65 places, 53 transitions, 323 flow. Second operand has 7 states, 7 states have (on average 12.857142857142858) internal successors, (90), 7 states have internal predecessors, (90), 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) [2024-06-14 11:33:26,142 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 11:33:26,142 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 31 [2024-06-14 11:33:26,142 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 11:33:26,222 INFO L124 PetriNetUnfolderBase]: 121/271 cut-off events. [2024-06-14 11:33:26,223 INFO L125 PetriNetUnfolderBase]: For 1870/1870 co-relation queries the response was YES. [2024-06-14 11:33:26,223 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1044 conditions, 271 events. 121/271 cut-off events. For 1870/1870 co-relation queries the response was YES. Maximal size of possible extension queue 29. Compared 1120 event pairs, 9 based on Foata normal form. 2/271 useless extension candidates. Maximal degree in co-relation 1012. Up to 168 conditions per place. [2024-06-14 11:33:26,224 INFO L140 encePairwiseOnDemand]: 24/31 looper letters, 56 selfloop transitions, 12 changer transitions 0/73 dead transitions. [2024-06-14 11:33:26,224 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 72 places, 73 transitions, 547 flow [2024-06-14 11:33:26,225 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-14 11:33:26,225 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-14 11:33:26,225 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 134 transitions. [2024-06-14 11:33:26,225 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5403225806451613 [2024-06-14 11:33:26,225 INFO L175 Difference]: Start difference. First operand has 65 places, 53 transitions, 323 flow. Second operand 8 states and 134 transitions. [2024-06-14 11:33:26,226 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 72 places, 73 transitions, 547 flow [2024-06-14 11:33:26,229 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 68 places, 73 transitions, 517 flow, removed 3 selfloop flow, removed 4 redundant places. [2024-06-14 11:33:26,230 INFO L231 Difference]: Finished difference. Result has 69 places, 55 transitions, 339 flow [2024-06-14 11:33:26,230 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=293, PETRI_DIFFERENCE_MINUEND_PLACES=61, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=53, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=42, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=339, PETRI_PLACES=69, PETRI_TRANSITIONS=55} [2024-06-14 11:33:26,230 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 39 predicate places. [2024-06-14 11:33:26,230 INFO L495 AbstractCegarLoop]: Abstraction has has 69 places, 55 transitions, 339 flow [2024-06-14 11:33:26,230 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 12.857142857142858) internal successors, (90), 7 states have internal predecessors, (90), 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) [2024-06-14 11:33:26,230 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 11:33:26,231 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 11:33:26,231 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2024-06-14 11:33:26,231 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 11:33:26,231 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 11:33:26,231 INFO L85 PathProgramCache]: Analyzing trace with hash -75974135, now seen corresponding path program 2 times [2024-06-14 11:33:26,231 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 11:33:26,232 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1523972797] [2024-06-14 11:33:26,232 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 11:33:26,232 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 11:33:26,236 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 11:33:26,311 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 11:33:26,311 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 11:33:26,311 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1523972797] [2024-06-14 11:33:26,312 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1523972797] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 11:33:26,312 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 11:33:26,312 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-14 11:33:26,312 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1175417149] [2024-06-14 11:33:26,312 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 11:33:26,312 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-14 11:33:26,313 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 11:33:26,313 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-14 11:33:26,313 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2024-06-14 11:33:26,343 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 31 [2024-06-14 11:33:26,344 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 69 places, 55 transitions, 339 flow. Second operand has 7 states, 7 states have (on average 12.857142857142858) internal successors, (90), 7 states have internal predecessors, (90), 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) [2024-06-14 11:33:26,344 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 11:33:26,344 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 31 [2024-06-14 11:33:26,344 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 11:33:26,422 INFO L124 PetriNetUnfolderBase]: 118/264 cut-off events. [2024-06-14 11:33:26,422 INFO L125 PetriNetUnfolderBase]: For 1793/1793 co-relation queries the response was YES. [2024-06-14 11:33:26,423 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1007 conditions, 264 events. 118/264 cut-off events. For 1793/1793 co-relation queries the response was YES. Maximal size of possible extension queue 29. Compared 1084 event pairs, 19 based on Foata normal form. 2/264 useless extension candidates. Maximal degree in co-relation 974. Up to 192 conditions per place. [2024-06-14 11:33:26,424 INFO L140 encePairwiseOnDemand]: 24/31 looper letters, 55 selfloop transitions, 10 changer transitions 0/70 dead transitions. [2024-06-14 11:33:26,424 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 75 places, 70 transitions, 505 flow [2024-06-14 11:33:26,424 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-14 11:33:26,424 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-14 11:33:26,425 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 119 transitions. [2024-06-14 11:33:26,425 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5483870967741935 [2024-06-14 11:33:26,425 INFO L175 Difference]: Start difference. First operand has 69 places, 55 transitions, 339 flow. Second operand 7 states and 119 transitions. [2024-06-14 11:33:26,425 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 75 places, 70 transitions, 505 flow [2024-06-14 11:33:26,428 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 71 places, 70 transitions, 479 flow, removed 7 selfloop flow, removed 4 redundant places. [2024-06-14 11:33:26,429 INFO L231 Difference]: Finished difference. Result has 72 places, 55 transitions, 337 flow [2024-06-14 11:33:26,429 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=313, PETRI_DIFFERENCE_MINUEND_PLACES=65, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=55, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=45, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=337, PETRI_PLACES=72, PETRI_TRANSITIONS=55} [2024-06-14 11:33:26,430 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 42 predicate places. [2024-06-14 11:33:26,430 INFO L495 AbstractCegarLoop]: Abstraction has has 72 places, 55 transitions, 337 flow [2024-06-14 11:33:26,430 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 12.857142857142858) internal successors, (90), 7 states have internal predecessors, (90), 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) [2024-06-14 11:33:26,430 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 11:33:26,430 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 11:33:26,430 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2024-06-14 11:33:26,430 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 11:33:26,431 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 11:33:26,431 INFO L85 PathProgramCache]: Analyzing trace with hash 1536088181, now seen corresponding path program 3 times [2024-06-14 11:33:26,431 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 11:33:26,431 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [857120510] [2024-06-14 11:33:26,431 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 11:33:26,431 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 11:33:26,435 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 11:33:26,505 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 11:33:26,506 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 11:33:26,506 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [857120510] [2024-06-14 11:33:26,506 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [857120510] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 11:33:26,506 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 11:33:26,506 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-14 11:33:26,506 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2039996663] [2024-06-14 11:33:26,507 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 11:33:26,507 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-14 11:33:26,507 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 11:33:26,507 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-14 11:33:26,507 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2024-06-14 11:33:26,536 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 31 [2024-06-14 11:33:26,536 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 72 places, 55 transitions, 337 flow. Second operand has 7 states, 7 states have (on average 12.857142857142858) internal successors, (90), 7 states have internal predecessors, (90), 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) [2024-06-14 11:33:26,536 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 11:33:26,537 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 31 [2024-06-14 11:33:26,537 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 11:33:26,593 INFO L124 PetriNetUnfolderBase]: 122/269 cut-off events. [2024-06-14 11:33:26,593 INFO L125 PetriNetUnfolderBase]: For 2056/2056 co-relation queries the response was YES. [2024-06-14 11:33:26,593 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1039 conditions, 269 events. 122/269 cut-off events. For 2056/2056 co-relation queries the response was YES. Maximal size of possible extension queue 28. Compared 1112 event pairs, 25 based on Foata normal form. 2/266 useless extension candidates. Maximal degree in co-relation 1004. Up to 160 conditions per place. [2024-06-14 11:33:26,595 INFO L140 encePairwiseOnDemand]: 23/31 looper letters, 37 selfloop transitions, 26 changer transitions 0/68 dead transitions. [2024-06-14 11:33:26,595 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 78 places, 68 transitions, 501 flow [2024-06-14 11:33:26,595 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-14 11:33:26,595 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-14 11:33:26,595 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 124 transitions. [2024-06-14 11:33:26,596 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5714285714285714 [2024-06-14 11:33:26,596 INFO L175 Difference]: Start difference. First operand has 72 places, 55 transitions, 337 flow. Second operand 7 states and 124 transitions. [2024-06-14 11:33:26,596 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 78 places, 68 transitions, 501 flow [2024-06-14 11:33:26,601 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 72 places, 68 transitions, 479 flow, removed 0 selfloop flow, removed 6 redundant places. [2024-06-14 11:33:26,602 INFO L231 Difference]: Finished difference. Result has 73 places, 56 transitions, 383 flow [2024-06-14 11:33:26,602 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=315, PETRI_DIFFERENCE_MINUEND_PLACES=66, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=55, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=25, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=29, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=383, PETRI_PLACES=73, PETRI_TRANSITIONS=56} [2024-06-14 11:33:26,603 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 43 predicate places. [2024-06-14 11:33:26,603 INFO L495 AbstractCegarLoop]: Abstraction has has 73 places, 56 transitions, 383 flow [2024-06-14 11:33:26,603 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 12.857142857142858) internal successors, (90), 7 states have internal predecessors, (90), 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) [2024-06-14 11:33:26,603 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 11:33:26,603 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 11:33:26,603 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2024-06-14 11:33:26,603 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 11:33:26,604 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 11:33:26,604 INFO L85 PathProgramCache]: Analyzing trace with hash 2118692597, now seen corresponding path program 4 times [2024-06-14 11:33:26,604 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 11:33:26,604 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1249169585] [2024-06-14 11:33:26,604 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 11:33:26,604 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 11:33:26,608 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 11:33:26,711 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 11:33:26,712 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 11:33:26,712 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1249169585] [2024-06-14 11:33:26,712 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1249169585] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 11:33:26,712 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 11:33:26,712 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-14 11:33:26,712 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [102842323] [2024-06-14 11:33:26,712 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 11:33:26,712 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-14 11:33:26,713 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 11:33:26,713 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-14 11:33:26,713 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2024-06-14 11:33:26,748 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 31 [2024-06-14 11:33:26,748 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 73 places, 56 transitions, 383 flow. Second operand has 7 states, 7 states have (on average 12.857142857142858) internal successors, (90), 7 states have internal predecessors, (90), 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) [2024-06-14 11:33:26,748 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 11:33:26,749 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 31 [2024-06-14 11:33:26,749 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 11:33:26,811 INFO L124 PetriNetUnfolderBase]: 131/289 cut-off events. [2024-06-14 11:33:26,811 INFO L125 PetriNetUnfolderBase]: For 3363/3363 co-relation queries the response was YES. [2024-06-14 11:33:26,822 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1101 conditions, 289 events. 131/289 cut-off events. For 3363/3363 co-relation queries the response was YES. Maximal size of possible extension queue 31. Compared 1260 event pairs, 30 based on Foata normal form. 10/293 useless extension candidates. Maximal degree in co-relation 1065. Up to 151 conditions per place. [2024-06-14 11:33:26,823 INFO L140 encePairwiseOnDemand]: 23/31 looper letters, 37 selfloop transitions, 22 changer transitions 4/68 dead transitions. [2024-06-14 11:33:26,823 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 79 places, 68 transitions, 543 flow [2024-06-14 11:33:26,824 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-14 11:33:26,824 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-14 11:33:26,824 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 123 transitions. [2024-06-14 11:33:26,824 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5668202764976958 [2024-06-14 11:33:26,824 INFO L175 Difference]: Start difference. First operand has 73 places, 56 transitions, 383 flow. Second operand 7 states and 123 transitions. [2024-06-14 11:33:26,824 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 79 places, 68 transitions, 543 flow [2024-06-14 11:33:26,828 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 74 places, 68 transitions, 485 flow, removed 4 selfloop flow, removed 5 redundant places. [2024-06-14 11:33:26,829 INFO L231 Difference]: Finished difference. Result has 75 places, 55 transitions, 368 flow [2024-06-14 11:33:26,829 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=325, PETRI_DIFFERENCE_MINUEND_PLACES=68, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=56, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=22, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=34, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=368, PETRI_PLACES=75, PETRI_TRANSITIONS=55} [2024-06-14 11:33:26,830 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 45 predicate places. [2024-06-14 11:33:26,830 INFO L495 AbstractCegarLoop]: Abstraction has has 75 places, 55 transitions, 368 flow [2024-06-14 11:33:26,830 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 12.857142857142858) internal successors, (90), 7 states have internal predecessors, (90), 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) [2024-06-14 11:33:26,830 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 11:33:26,830 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 11:33:26,830 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2024-06-14 11:33:26,830 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 11:33:26,830 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 11:33:26,830 INFO L85 PathProgramCache]: Analyzing trace with hash -757301936, now seen corresponding path program 1 times [2024-06-14 11:33:26,830 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 11:33:26,831 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [514768882] [2024-06-14 11:33:26,831 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 11:33:26,831 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 11:33:26,848 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 11:33:26,925 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 11:33:26,926 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 11:33:26,926 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [514768882] [2024-06-14 11:33:26,926 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [514768882] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 11:33:26,926 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 11:33:26,926 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-14 11:33:26,926 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [302574852] [2024-06-14 11:33:26,926 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 11:33:26,927 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-14 11:33:26,927 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 11:33:26,928 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-14 11:33:26,928 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2024-06-14 11:33:26,976 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 31 [2024-06-14 11:33:26,977 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 75 places, 55 transitions, 368 flow. Second operand has 7 states, 7 states have (on average 13.0) internal successors, (91), 7 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:33:26,977 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 11:33:26,977 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 31 [2024-06-14 11:33:26,977 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 11:33:27,041 INFO L124 PetriNetUnfolderBase]: 155/349 cut-off events. [2024-06-14 11:33:27,042 INFO L125 PetriNetUnfolderBase]: For 4431/4431 co-relation queries the response was YES. [2024-06-14 11:33:27,043 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1371 conditions, 349 events. 155/349 cut-off events. For 4431/4431 co-relation queries the response was YES. Maximal size of possible extension queue 32. Compared 1643 event pairs, 40 based on Foata normal form. 6/349 useless extension candidates. Maximal degree in co-relation 1334. Up to 126 conditions per place. [2024-06-14 11:33:27,044 INFO L140 encePairwiseOnDemand]: 24/31 looper letters, 40 selfloop transitions, 15 changer transitions 12/72 dead transitions. [2024-06-14 11:33:27,044 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 81 places, 72 transitions, 586 flow [2024-06-14 11:33:27,044 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-14 11:33:27,044 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-14 11:33:27,046 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 123 transitions. [2024-06-14 11:33:27,046 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5668202764976958 [2024-06-14 11:33:27,046 INFO L175 Difference]: Start difference. First operand has 75 places, 55 transitions, 368 flow. Second operand 7 states and 123 transitions. [2024-06-14 11:33:27,046 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 81 places, 72 transitions, 586 flow [2024-06-14 11:33:27,056 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 75 places, 72 transitions, 530 flow, removed 4 selfloop flow, removed 6 redundant places. [2024-06-14 11:33:27,057 INFO L231 Difference]: Finished difference. Result has 76 places, 52 transitions, 327 flow [2024-06-14 11:33:27,057 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=312, PETRI_DIFFERENCE_MINUEND_PLACES=69, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=55, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=15, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=40, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=327, PETRI_PLACES=76, PETRI_TRANSITIONS=52} [2024-06-14 11:33:27,058 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 46 predicate places. [2024-06-14 11:33:27,058 INFO L495 AbstractCegarLoop]: Abstraction has has 76 places, 52 transitions, 327 flow [2024-06-14 11:33:27,058 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 13.0) internal successors, (91), 7 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:33:27,058 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 11:33:27,058 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 11:33:27,059 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2024-06-14 11:33:27,059 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 11:33:27,059 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 11:33:27,059 INFO L85 PathProgramCache]: Analyzing trace with hash -1460662900, now seen corresponding path program 2 times [2024-06-14 11:33:27,059 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 11:33:27,059 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [667960435] [2024-06-14 11:33:27,060 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 11:33:27,060 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 11:33:27,065 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 11:33:27,138 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 11:33:27,139 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 11:33:27,139 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [667960435] [2024-06-14 11:33:27,139 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [667960435] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 11:33:27,139 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 11:33:27,139 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-14 11:33:27,139 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [646494226] [2024-06-14 11:33:27,139 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 11:33:27,140 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-14 11:33:27,140 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 11:33:27,140 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-14 11:33:27,141 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2024-06-14 11:33:27,168 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 31 [2024-06-14 11:33:27,168 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 76 places, 52 transitions, 327 flow. Second operand has 7 states, 7 states have (on average 13.0) internal successors, (91), 7 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:33:27,168 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 11:33:27,168 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 31 [2024-06-14 11:33:27,169 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 11:33:27,230 INFO L124 PetriNetUnfolderBase]: 139/319 cut-off events. [2024-06-14 11:33:27,230 INFO L125 PetriNetUnfolderBase]: For 4686/4686 co-relation queries the response was YES. [2024-06-14 11:33:27,231 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1255 conditions, 319 events. 139/319 cut-off events. For 4686/4686 co-relation queries the response was YES. Maximal size of possible extension queue 29. Compared 1466 event pairs, 31 based on Foata normal form. 6/320 useless extension candidates. Maximal degree in co-relation 1218. Up to 126 conditions per place. [2024-06-14 11:33:27,232 INFO L140 encePairwiseOnDemand]: 24/31 looper letters, 39 selfloop transitions, 14 changer transitions 6/64 dead transitions. [2024-06-14 11:33:27,232 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 77 places, 64 transitions, 519 flow [2024-06-14 11:33:27,232 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-14 11:33:27,232 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-14 11:33:27,232 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 104 transitions. [2024-06-14 11:33:27,233 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5591397849462365 [2024-06-14 11:33:27,233 INFO L175 Difference]: Start difference. First operand has 76 places, 52 transitions, 327 flow. Second operand 6 states and 104 transitions. [2024-06-14 11:33:27,233 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 77 places, 64 transitions, 519 flow [2024-06-14 11:33:27,238 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 70 places, 64 transitions, 477 flow, removed 6 selfloop flow, removed 7 redundant places. [2024-06-14 11:33:27,239 INFO L231 Difference]: Finished difference. Result has 71 places, 50 transitions, 310 flow [2024-06-14 11:33:27,239 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=291, PETRI_DIFFERENCE_MINUEND_PLACES=65, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=52, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=38, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=310, PETRI_PLACES=71, PETRI_TRANSITIONS=50} [2024-06-14 11:33:27,240 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 41 predicate places. [2024-06-14 11:33:27,240 INFO L495 AbstractCegarLoop]: Abstraction has has 71 places, 50 transitions, 310 flow [2024-06-14 11:33:27,240 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 13.0) internal successors, (91), 7 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:33:27,240 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 11:33:27,240 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 11:33:27,241 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2024-06-14 11:33:27,241 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 11:33:27,241 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 11:33:27,241 INFO L85 PathProgramCache]: Analyzing trace with hash -1458136446, now seen corresponding path program 3 times [2024-06-14 11:33:27,241 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 11:33:27,241 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2144030641] [2024-06-14 11:33:27,241 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 11:33:27,242 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 11:33:27,246 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 11:33:27,336 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 11:33:27,336 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 11:33:27,337 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2144030641] [2024-06-14 11:33:27,337 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2144030641] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 11:33:27,337 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 11:33:27,337 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-14 11:33:27,337 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1534389923] [2024-06-14 11:33:27,337 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 11:33:27,338 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-14 11:33:27,338 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 11:33:27,338 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-14 11:33:27,338 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2024-06-14 11:33:27,363 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 31 [2024-06-14 11:33:27,364 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 71 places, 50 transitions, 310 flow. Second operand has 7 states, 7 states have (on average 13.0) internal successors, (91), 7 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:33:27,364 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 11:33:27,364 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 31 [2024-06-14 11:33:27,364 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 11:33:27,426 INFO L124 PetriNetUnfolderBase]: 115/269 cut-off events. [2024-06-14 11:33:27,426 INFO L125 PetriNetUnfolderBase]: For 2848/2848 co-relation queries the response was YES. [2024-06-14 11:33:27,427 INFO L83 FinitePrefix]: Finished finitePrefix Result has 955 conditions, 269 events. 115/269 cut-off events. For 2848/2848 co-relation queries the response was YES. Maximal size of possible extension queue 26. Compared 1176 event pairs, 21 based on Foata normal form. 8/272 useless extension candidates. Maximal degree in co-relation 920. Up to 140 conditions per place. [2024-06-14 11:33:27,428 INFO L140 encePairwiseOnDemand]: 23/31 looper letters, 31 selfloop transitions, 14 changer transitions 8/58 dead transitions. [2024-06-14 11:33:27,428 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 74 places, 58 transitions, 440 flow [2024-06-14 11:33:27,428 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-14 11:33:27,428 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-14 11:33:27,429 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 103 transitions. [2024-06-14 11:33:27,429 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.553763440860215 [2024-06-14 11:33:27,429 INFO L175 Difference]: Start difference. First operand has 71 places, 50 transitions, 310 flow. Second operand 6 states and 103 transitions. [2024-06-14 11:33:27,429 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 74 places, 58 transitions, 440 flow [2024-06-14 11:33:27,432 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 68 places, 58 transitions, 408 flow, removed 2 selfloop flow, removed 6 redundant places. [2024-06-14 11:33:27,433 INFO L231 Difference]: Finished difference. Result has 69 places, 45 transitions, 282 flow [2024-06-14 11:33:27,433 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=278, PETRI_DIFFERENCE_MINUEND_PLACES=63, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=50, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=36, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=282, PETRI_PLACES=69, PETRI_TRANSITIONS=45} [2024-06-14 11:33:27,433 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 39 predicate places. [2024-06-14 11:33:27,434 INFO L495 AbstractCegarLoop]: Abstraction has has 69 places, 45 transitions, 282 flow [2024-06-14 11:33:27,434 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 13.0) internal successors, (91), 7 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:33:27,434 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 11:33:27,434 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 11:33:27,434 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2024-06-14 11:33:27,434 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 11:33:27,435 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 11:33:27,435 INFO L85 PathProgramCache]: Analyzing trace with hash -9612512, now seen corresponding path program 4 times [2024-06-14 11:33:27,435 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 11:33:27,435 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1553452342] [2024-06-14 11:33:27,435 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 11:33:27,435 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 11:33:27,440 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 11:33:27,504 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 11:33:27,504 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 11:33:27,504 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1553452342] [2024-06-14 11:33:27,505 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1553452342] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 11:33:27,505 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 11:33:27,505 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-14 11:33:27,505 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [49997576] [2024-06-14 11:33:27,505 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 11:33:27,505 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-14 11:33:27,506 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 11:33:27,506 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-14 11:33:27,506 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2024-06-14 11:33:27,528 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 31 [2024-06-14 11:33:27,528 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 69 places, 45 transitions, 282 flow. Second operand has 7 states, 7 states have (on average 13.0) internal successors, (91), 7 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:33:27,528 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 11:33:27,529 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 31 [2024-06-14 11:33:27,529 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 11:33:27,580 INFO L124 PetriNetUnfolderBase]: 105/246 cut-off events. [2024-06-14 11:33:27,581 INFO L125 PetriNetUnfolderBase]: For 2450/2450 co-relation queries the response was YES. [2024-06-14 11:33:27,581 INFO L83 FinitePrefix]: Finished finitePrefix Result has 880 conditions, 246 events. 105/246 cut-off events. For 2450/2450 co-relation queries the response was YES. Maximal size of possible extension queue 23. Compared 1028 event pairs, 28 based on Foata normal form. 8/251 useless extension candidates. Maximal degree in co-relation 846. Up to 131 conditions per place. [2024-06-14 11:33:27,582 INFO L140 encePairwiseOnDemand]: 23/31 looper letters, 25 selfloop transitions, 15 changer transitions 9/54 dead transitions. [2024-06-14 11:33:27,582 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 73 places, 54 transitions, 406 flow [2024-06-14 11:33:27,583 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-14 11:33:27,583 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-14 11:33:27,583 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 116 transitions. [2024-06-14 11:33:27,583 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5345622119815668 [2024-06-14 11:33:27,583 INFO L175 Difference]: Start difference. First operand has 69 places, 45 transitions, 282 flow. Second operand 7 states and 116 transitions. [2024-06-14 11:33:27,583 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 73 places, 54 transitions, 406 flow [2024-06-14 11:33:27,586 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 64 places, 54 transitions, 355 flow, removed 4 selfloop flow, removed 9 redundant places. [2024-06-14 11:33:27,587 INFO L231 Difference]: Finished difference. Result has 65 places, 42 transitions, 249 flow [2024-06-14 11:33:27,587 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=233, PETRI_DIFFERENCE_MINUEND_PLACES=58, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=45, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=15, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=30, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=249, PETRI_PLACES=65, PETRI_TRANSITIONS=42} [2024-06-14 11:33:27,587 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 35 predicate places. [2024-06-14 11:33:27,588 INFO L495 AbstractCegarLoop]: Abstraction has has 65 places, 42 transitions, 249 flow [2024-06-14 11:33:27,588 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 13.0) internal successors, (91), 7 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:33:27,588 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 11:33:27,588 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 11:33:27,588 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2024-06-14 11:33:27,588 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 11:33:27,589 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 11:33:27,589 INFO L85 PathProgramCache]: Analyzing trace with hash -1988000, now seen corresponding path program 1 times [2024-06-14 11:33:27,589 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 11:33:27,589 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1220276285] [2024-06-14 11:33:27,589 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 11:33:27,589 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 11:33:27,593 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 11:33:27,653 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 11:33:27,653 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 11:33:27,653 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1220276285] [2024-06-14 11:33:27,654 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1220276285] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 11:33:27,654 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 11:33:27,654 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-14 11:33:27,654 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [259906341] [2024-06-14 11:33:27,654 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 11:33:27,654 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-14 11:33:27,654 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 11:33:27,655 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-14 11:33:27,655 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2024-06-14 11:33:27,681 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 31 [2024-06-14 11:33:27,682 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 65 places, 42 transitions, 249 flow. Second operand has 7 states, 7 states have (on average 13.0) internal successors, (91), 7 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:33:27,682 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 11:33:27,682 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 31 [2024-06-14 11:33:27,682 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 11:33:27,737 INFO L124 PetriNetUnfolderBase]: 118/281 cut-off events. [2024-06-14 11:33:27,738 INFO L125 PetriNetUnfolderBase]: For 3063/3063 co-relation queries the response was YES. [2024-06-14 11:33:27,738 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1026 conditions, 281 events. 118/281 cut-off events. For 3063/3063 co-relation queries the response was YES. Maximal size of possible extension queue 27. Compared 1258 event pairs, 36 based on Foata normal form. 6/284 useless extension candidates. Maximal degree in co-relation 994. Up to 111 conditions per place. [2024-06-14 11:33:27,739 INFO L140 encePairwiseOnDemand]: 23/31 looper letters, 29 selfloop transitions, 14 changer transitions 7/55 dead transitions. [2024-06-14 11:33:27,739 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 68 places, 55 transitions, 417 flow [2024-06-14 11:33:27,739 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-14 11:33:27,740 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-14 11:33:27,740 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 118 transitions. [2024-06-14 11:33:27,740 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.543778801843318 [2024-06-14 11:33:27,740 INFO L175 Difference]: Start difference. First operand has 65 places, 42 transitions, 249 flow. Second operand 7 states and 118 transitions. [2024-06-14 11:33:27,740 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 68 places, 55 transitions, 417 flow [2024-06-14 11:33:27,743 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 62 places, 55 transitions, 379 flow, removed 4 selfloop flow, removed 6 redundant places. [2024-06-14 11:33:27,743 INFO L231 Difference]: Finished difference. Result has 63 places, 39 transitions, 229 flow [2024-06-14 11:33:27,744 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=215, PETRI_DIFFERENCE_MINUEND_PLACES=56, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=42, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=28, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=229, PETRI_PLACES=63, PETRI_TRANSITIONS=39} [2024-06-14 11:33:27,744 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 33 predicate places. [2024-06-14 11:33:27,744 INFO L495 AbstractCegarLoop]: Abstraction has has 63 places, 39 transitions, 229 flow [2024-06-14 11:33:27,744 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 13.0) internal successors, (91), 7 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:33:27,744 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 11:33:27,744 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 11:33:27,745 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2024-06-14 11:33:27,745 INFO L420 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 11:33:27,745 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 11:33:27,745 INFO L85 PathProgramCache]: Analyzing trace with hash -208908350, now seen corresponding path program 2 times [2024-06-14 11:33:27,745 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 11:33:27,745 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1039500150] [2024-06-14 11:33:27,745 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 11:33:27,746 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 11:33:27,749 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 11:33:27,811 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 11:33:27,811 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 11:33:27,811 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1039500150] [2024-06-14 11:33:27,811 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1039500150] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 11:33:27,812 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 11:33:27,812 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-14 11:33:27,812 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [954483929] [2024-06-14 11:33:27,812 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 11:33:27,812 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-14 11:33:27,812 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 11:33:27,813 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-14 11:33:27,813 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2024-06-14 11:33:27,837 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 31 [2024-06-14 11:33:27,837 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 63 places, 39 transitions, 229 flow. Second operand has 7 states, 7 states have (on average 13.0) internal successors, (91), 7 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:33:27,838 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 11:33:27,838 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 31 [2024-06-14 11:33:27,838 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 11:33:27,880 INFO L124 PetriNetUnfolderBase]: 91/220 cut-off events. [2024-06-14 11:33:27,880 INFO L125 PetriNetUnfolderBase]: For 2030/2030 co-relation queries the response was YES. [2024-06-14 11:33:27,881 INFO L83 FinitePrefix]: Finished finitePrefix Result has 741 conditions, 220 events. 91/220 cut-off events. For 2030/2030 co-relation queries the response was YES. Maximal size of possible extension queue 20. Compared 900 event pairs, 30 based on Foata normal form. 8/225 useless extension candidates. Maximal degree in co-relation 710. Up to 117 conditions per place. [2024-06-14 11:33:27,881 INFO L140 encePairwiseOnDemand]: 24/31 looper letters, 24 selfloop transitions, 9 changer transitions 10/48 dead transitions. [2024-06-14 11:33:27,881 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 68 places, 48 transitions, 339 flow [2024-06-14 11:33:27,882 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-14 11:33:27,882 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-14 11:33:27,882 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 113 transitions. [2024-06-14 11:33:27,882 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5207373271889401 [2024-06-14 11:33:27,882 INFO L175 Difference]: Start difference. First operand has 63 places, 39 transitions, 229 flow. Second operand 7 states and 113 transitions. [2024-06-14 11:33:27,882 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 68 places, 48 transitions, 339 flow [2024-06-14 11:33:27,884 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 62 places, 48 transitions, 309 flow, removed 1 selfloop flow, removed 6 redundant places. [2024-06-14 11:33:27,885 INFO L231 Difference]: Finished difference. Result has 63 places, 35 transitions, 197 flow [2024-06-14 11:33:27,885 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=199, PETRI_DIFFERENCE_MINUEND_PLACES=56, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=39, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=30, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=197, PETRI_PLACES=63, PETRI_TRANSITIONS=35} [2024-06-14 11:33:27,885 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 33 predicate places. [2024-06-14 11:33:27,886 INFO L495 AbstractCegarLoop]: Abstraction has has 63 places, 35 transitions, 197 flow [2024-06-14 11:33:27,886 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 13.0) internal successors, (91), 7 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:33:27,886 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 11:33:27,886 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 11:33:27,886 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2024-06-14 11:33:27,886 INFO L420 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 11:33:27,886 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 11:33:27,887 INFO L85 PathProgramCache]: Analyzing trace with hash -209062172, now seen corresponding path program 5 times [2024-06-14 11:33:27,895 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 11:33:27,895 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [530498028] [2024-06-14 11:33:27,895 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 11:33:27,895 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 11:33:27,899 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 11:33:27,957 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 11:33:27,957 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 11:33:27,957 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [530498028] [2024-06-14 11:33:27,957 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [530498028] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 11:33:27,957 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 11:33:27,957 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-14 11:33:27,958 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1539864003] [2024-06-14 11:33:27,958 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 11:33:27,958 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-14 11:33:27,958 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 11:33:27,958 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-14 11:33:27,958 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2024-06-14 11:33:27,984 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 31 [2024-06-14 11:33:27,985 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 63 places, 35 transitions, 197 flow. Second operand has 7 states, 7 states have (on average 13.0) internal successors, (91), 7 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:33:27,985 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 11:33:27,985 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 31 [2024-06-14 11:33:27,985 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 11:33:28,022 INFO L124 PetriNetUnfolderBase]: 73/190 cut-off events. [2024-06-14 11:33:28,022 INFO L125 PetriNetUnfolderBase]: For 1515/1515 co-relation queries the response was YES. [2024-06-14 11:33:28,023 INFO L83 FinitePrefix]: Finished finitePrefix Result has 611 conditions, 190 events. 73/190 cut-off events. For 1515/1515 co-relation queries the response was YES. Maximal size of possible extension queue 15. Compared 720 event pairs, 23 based on Foata normal form. 6/193 useless extension candidates. Maximal degree in co-relation 580. Up to 62 conditions per place. [2024-06-14 11:33:28,023 INFO L140 encePairwiseOnDemand]: 24/31 looper letters, 18 selfloop transitions, 4 changer transitions 18/45 dead transitions. [2024-06-14 11:33:28,024 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 66 places, 45 transitions, 299 flow [2024-06-14 11:33:28,024 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-14 11:33:28,024 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-14 11:33:28,024 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 111 transitions. [2024-06-14 11:33:28,024 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.511520737327189 [2024-06-14 11:33:28,024 INFO L175 Difference]: Start difference. First operand has 63 places, 35 transitions, 197 flow. Second operand 7 states and 111 transitions. [2024-06-14 11:33:28,025 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 66 places, 45 transitions, 299 flow [2024-06-14 11:33:28,026 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 60 places, 45 transitions, 277 flow, removed 2 selfloop flow, removed 6 redundant places. [2024-06-14 11:33:28,026 INFO L231 Difference]: Finished difference. Result has 61 places, 25 transitions, 127 flow [2024-06-14 11:33:28,026 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=175, PETRI_DIFFERENCE_MINUEND_PLACES=54, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=35, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=31, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=127, PETRI_PLACES=61, PETRI_TRANSITIONS=25} [2024-06-14 11:33:28,027 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 31 predicate places. [2024-06-14 11:33:28,027 INFO L495 AbstractCegarLoop]: Abstraction has has 61 places, 25 transitions, 127 flow [2024-06-14 11:33:28,027 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 13.0) internal successors, (91), 7 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:33:28,027 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 11:33:28,027 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 11:33:28,027 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2024-06-14 11:33:28,028 INFO L420 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 11:33:28,028 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 11:33:28,028 INFO L85 PathProgramCache]: Analyzing trace with hash 1573048416, now seen corresponding path program 3 times [2024-06-14 11:33:28,028 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 11:33:28,028 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1662747429] [2024-06-14 11:33:28,028 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 11:33:28,028 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 11:33:28,032 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 11:33:28,092 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 11:33:28,092 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 11:33:28,092 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1662747429] [2024-06-14 11:33:28,092 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1662747429] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 11:33:28,093 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 11:33:28,093 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-14 11:33:28,093 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1823956560] [2024-06-14 11:33:28,093 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 11:33:28,093 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-14 11:33:28,093 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 11:33:28,094 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-14 11:33:28,094 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2024-06-14 11:33:28,122 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 31 [2024-06-14 11:33:28,122 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 61 places, 25 transitions, 127 flow. Second operand has 7 states, 7 states have (on average 13.0) internal successors, (91), 7 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:33:28,122 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 11:33:28,122 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 31 [2024-06-14 11:33:28,123 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 11:33:28,161 INFO L124 PetriNetUnfolderBase]: 42/112 cut-off events. [2024-06-14 11:33:28,161 INFO L125 PetriNetUnfolderBase]: For 1248/1248 co-relation queries the response was YES. [2024-06-14 11:33:28,162 INFO L83 FinitePrefix]: Finished finitePrefix Result has 384 conditions, 112 events. 42/112 cut-off events. For 1248/1248 co-relation queries the response was YES. Maximal size of possible extension queue 10. Compared 330 event pairs, 15 based on Foata normal form. 6/115 useless extension candidates. Maximal degree in co-relation 354. Up to 52 conditions per place. [2024-06-14 11:33:28,162 INFO L140 encePairwiseOnDemand]: 25/31 looper letters, 16 selfloop transitions, 3 changer transitions 10/34 dead transitions. [2024-06-14 11:33:28,162 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 58 places, 34 transitions, 207 flow [2024-06-14 11:33:28,162 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-14 11:33:28,162 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-14 11:33:28,163 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 107 transitions. [2024-06-14 11:33:28,163 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4930875576036866 [2024-06-14 11:33:28,163 INFO L175 Difference]: Start difference. First operand has 61 places, 25 transitions, 127 flow. Second operand 7 states and 107 transitions. [2024-06-14 11:33:28,163 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 58 places, 34 transitions, 207 flow [2024-06-14 11:33:28,164 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 46 places, 34 transitions, 176 flow, removed 8 selfloop flow, removed 12 redundant places. [2024-06-14 11:33:28,164 INFO L231 Difference]: Finished difference. Result has 47 places, 22 transitions, 90 flow [2024-06-14 11:33:28,164 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=98, PETRI_DIFFERENCE_MINUEND_PLACES=40, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=25, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=22, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=90, PETRI_PLACES=47, PETRI_TRANSITIONS=22} [2024-06-14 11:33:28,165 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 17 predicate places. [2024-06-14 11:33:28,165 INFO L495 AbstractCegarLoop]: Abstraction has has 47 places, 22 transitions, 90 flow [2024-06-14 11:33:28,165 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 13.0) internal successors, (91), 7 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:33:28,165 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 11:33:28,165 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 11:33:28,165 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2024-06-14 11:33:28,165 INFO L420 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 11:33:28,166 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 11:33:28,166 INFO L85 PathProgramCache]: Analyzing trace with hash -1537750180, now seen corresponding path program 4 times [2024-06-14 11:33:28,166 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 11:33:28,166 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [144951350] [2024-06-14 11:33:28,166 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 11:33:28,166 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 11:33:28,170 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 11:33:28,228 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 11:33:28,228 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 11:33:28,228 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [144951350] [2024-06-14 11:33:28,228 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [144951350] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 11:33:28,228 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 11:33:28,228 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-14 11:33:28,229 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [719116626] [2024-06-14 11:33:28,229 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 11:33:28,229 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-14 11:33:28,229 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 11:33:28,229 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-14 11:33:28,229 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2024-06-14 11:33:28,258 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 31 [2024-06-14 11:33:28,259 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 47 places, 22 transitions, 90 flow. Second operand has 7 states, 7 states have (on average 13.0) internal successors, (91), 7 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:33:28,259 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 11:33:28,259 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 31 [2024-06-14 11:33:28,259 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 11:33:28,284 INFO L124 PetriNetUnfolderBase]: 20/64 cut-off events. [2024-06-14 11:33:28,285 INFO L125 PetriNetUnfolderBase]: For 268/268 co-relation queries the response was YES. [2024-06-14 11:33:28,285 INFO L83 FinitePrefix]: Finished finitePrefix Result has 163 conditions, 64 events. 20/64 cut-off events. For 268/268 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 103 event pairs, 0 based on Foata normal form. 6/69 useless extension candidates. Maximal degree in co-relation 151. Up to 24 conditions per place. [2024-06-14 11:33:28,285 INFO L140 encePairwiseOnDemand]: 25/31 looper letters, 0 selfloop transitions, 0 changer transitions 27/27 dead transitions. [2024-06-14 11:33:28,285 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 47 places, 27 transitions, 126 flow [2024-06-14 11:33:28,285 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-14 11:33:28,286 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-14 11:33:28,286 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 100 transitions. [2024-06-14 11:33:28,286 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4608294930875576 [2024-06-14 11:33:28,286 INFO L175 Difference]: Start difference. First operand has 47 places, 22 transitions, 90 flow. Second operand 7 states and 100 transitions. [2024-06-14 11:33:28,286 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 47 places, 27 transitions, 126 flow [2024-06-14 11:33:28,286 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 36 places, 27 transitions, 104 flow, removed 1 selfloop flow, removed 11 redundant places. [2024-06-14 11:33:28,287 INFO L231 Difference]: Finished difference. Result has 36 places, 0 transitions, 0 flow [2024-06-14 11:33:28,287 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=48, PETRI_DIFFERENCE_MINUEND_PLACES=30, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=21, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=21, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=0, PETRI_PLACES=36, PETRI_TRANSITIONS=0} [2024-06-14 11:33:28,287 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 6 predicate places. [2024-06-14 11:33:28,288 INFO L495 AbstractCegarLoop]: Abstraction has has 36 places, 0 transitions, 0 flow [2024-06-14 11:33:28,288 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 13.0) internal successors, (91), 7 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:33:28,290 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT (3 of 4 remaining) [2024-06-14 11:33:28,290 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (2 of 4 remaining) [2024-06-14 11:33:28,290 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 4 remaining) [2024-06-14 11:33:28,290 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 4 remaining) [2024-06-14 11:33:28,291 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2024-06-14 11:33:28,291 INFO L445 BasicCegarLoop]: Path program histogram: [5, 4, 4, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1] [2024-06-14 11:33:28,293 INFO L229 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2024-06-14 11:33:28,293 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2024-06-14 11:33:28,296 INFO L507 ceAbstractionStarter]: Automizer considered 2 witness invariants [2024-06-14 11:33:28,296 INFO L508 ceAbstractionStarter]: WitnessConsidered=2 [2024-06-14 11:33:28,296 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 14.06 11:33:28 BasicIcfg [2024-06-14 11:33:28,296 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2024-06-14 11:33:28,297 INFO L158 Benchmark]: Toolchain (without parser) took 6362.86ms. Allocated memory was 151.0MB in the beginning and 335.5MB in the end (delta: 184.5MB). Free memory was 73.0MB in the beginning and 176.2MB in the end (delta: -103.2MB). Peak memory consumption was 83.0MB. Max. memory is 16.1GB. [2024-06-14 11:33:28,297 INFO L158 Benchmark]: Witness Parser took 0.16ms. Allocated memory is still 151.0MB. Free memory is still 102.9MB. There was no memory consumed. Max. memory is 16.1GB. [2024-06-14 11:33:28,297 INFO L158 Benchmark]: CDTParser took 0.12ms. Allocated memory is still 151.0MB. Free memory is still 120.9MB. There was no memory consumed. Max. memory is 16.1GB. [2024-06-14 11:33:28,297 INFO L158 Benchmark]: CACSL2BoogieTranslator took 487.75ms. Allocated memory was 151.0MB in the beginning and 207.6MB in the end (delta: 56.6MB). Free memory was 72.9MB in the beginning and 158.6MB in the end (delta: -85.7MB). Peak memory consumption was 11.5MB. Max. memory is 16.1GB. [2024-06-14 11:33:28,297 INFO L158 Benchmark]: Boogie Procedure Inliner took 38.87ms. Allocated memory is still 207.6MB. Free memory was 158.6MB in the beginning and 156.5MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2024-06-14 11:33:28,298 INFO L158 Benchmark]: Boogie Preprocessor took 26.20ms. Allocated memory is still 207.6MB. Free memory was 156.5MB in the beginning and 154.4MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2024-06-14 11:33:28,298 INFO L158 Benchmark]: RCFGBuilder took 490.18ms. Allocated memory is still 207.6MB. Free memory was 154.4MB in the beginning and 133.4MB in the end (delta: 21.0MB). Peak memory consumption was 21.0MB. Max. memory is 16.1GB. [2024-06-14 11:33:28,298 INFO L158 Benchmark]: TraceAbstraction took 5313.47ms. Allocated memory was 207.6MB in the beginning and 335.5MB in the end (delta: 127.9MB). Free memory was 132.4MB in the beginning and 176.2MB in the end (delta: -43.8MB). Peak memory consumption was 84.1MB. Max. memory is 16.1GB. [2024-06-14 11:33:28,299 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * Witness Parser took 0.16ms. Allocated memory is still 151.0MB. Free memory is still 102.9MB. There was no memory consumed. Max. memory is 16.1GB. * CDTParser took 0.12ms. Allocated memory is still 151.0MB. Free memory is still 120.9MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 487.75ms. Allocated memory was 151.0MB in the beginning and 207.6MB in the end (delta: 56.6MB). Free memory was 72.9MB in the beginning and 158.6MB in the end (delta: -85.7MB). Peak memory consumption was 11.5MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 38.87ms. Allocated memory is still 207.6MB. Free memory was 158.6MB in the beginning and 156.5MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 26.20ms. Allocated memory is still 207.6MB. Free memory was 156.5MB in the beginning and 154.4MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 490.18ms. Allocated memory is still 207.6MB. Free memory was 154.4MB in the beginning and 133.4MB in the end (delta: 21.0MB). Peak memory consumption was 21.0MB. Max. memory is 16.1GB. * TraceAbstraction took 5313.47ms. Allocated memory was 207.6MB in the beginning and 335.5MB in the end (delta: 127.9MB). Free memory was 132.4MB in the beginning and 176.2MB in the end (delta: -43.8MB). Peak memory consumption was 84.1MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 763]: invariant of correctness witness holds For all program executions holds that invariant of correctness witness holds at this location - PositiveResult [Line: 764]: invariant of correctness witness holds For all program executions holds that invariant of correctness witness holds at this location - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 5 procedures, 49 locations, 4 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 0.0s, RemoveRedundantFlowTime: 0.0s, RemoveRedundantFlowUnfoldingTime: 0.0s, BackfoldingTime: 0.0s, BackfoldingUnfoldingTime: 0.0s, FlowIncreaseByBackfolding: 0, BasicCegarLoop: OverallTime: 5.2s, OverallIterations: 29, TraceHistogramMax: 1, PathProgramHistogramMax: 5, EmptinessCheckTime: 0.0s, AutomataDifference: 2.5s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 1136 SdHoareTripleChecker+Valid, 1.6s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 797 mSDsluCounter, 346 SdHoareTripleChecker+Invalid, 1.3s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 215 mSDsCounter, 119 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 3371 IncrementalHoareTripleChecker+Invalid, 3490 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 119 mSolverCounterUnsat, 131 mSDtfsCounter, 3371 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 126 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 126 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 54 ImplicationChecksByTransitivity, 0.6s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=383occurred in iteration=19, InterpolantAutomatonStates: 175, 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, 2.3s InterpolantComputationTime, 444 NumberOfCodeBlocks, 444 NumberOfCodeBlocksAsserted, 29 NumberOfCheckSat, 415 ConstructedInterpolants, 0 QuantifiedInterpolants, 2985 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 29 InterpolantComputations, 29 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 2 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2024-06-14 11:33:28,319 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: TRUE