./Ultimate.py --spec ../../../trunk/examples/svcomp/properties/unreach-call.prp --file ../../../trunk/examples/svcomp/pthread-wmm/safe018_pso.oepc_pso.opt_tso.oepc_tso.opt.i --full-output --witness-type correctness_witness --witnessparser.only.consider.loop.invariants false --validate ./goblint.2024-06-19_11-23-25.files/mutex-meet-rel/safe018_pso.oepc_pso.opt_tso.oepc_tso.opt.yml/witness.yml --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 7724a2de Calling Ultimate with: /root/.sdkman/candidates/java/current/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReachWitnessValidation.xml -i ../../../trunk/examples/svcomp/pthread-wmm/safe018_pso.oepc_pso.opt_tso.oepc_tso.opt.i ./goblint.2024-06-19_11-23-25.files/mutex-meet-rel/safe018_pso.oepc_pso.opt_tso.oepc_tso.opt.yml/witness.yml -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --traceabstraction.compute.hoare.annotation.of.negated.interpolant.automaton,.abstraction.and.cfg false --witnessparser.only.consider.loop.invariants false --- Real Ultimate output --- This is Ultimate 0.2.4-tmp.fs.goblint-validation-7724a2d-m [2024-06-27 21:50:41,293 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-06-27 21:50:41,355 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-06-27 21:50:41,359 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-06-27 21:50:41,359 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-06-27 21:50:41,385 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-06-27 21:50:41,386 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-06-27 21:50:41,387 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-06-27 21:50:41,387 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-06-27 21:50:41,390 INFO L153 SettingsManager]: * Use memory slicer=true [2024-06-27 21:50:41,390 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-06-27 21:50:41,390 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-06-27 21:50:41,391 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-06-27 21:50:41,392 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-06-27 21:50:41,392 INFO L153 SettingsManager]: * Use SBE=true [2024-06-27 21:50:41,392 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-06-27 21:50:41,392 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-06-27 21:50:41,392 INFO L153 SettingsManager]: * sizeof long=4 [2024-06-27 21:50:41,393 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-06-27 21:50:41,393 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-06-27 21:50:41,393 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-06-27 21:50:41,393 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-06-27 21:50:41,394 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-06-27 21:50:41,394 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-06-27 21:50:41,394 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-06-27 21:50:41,394 INFO L153 SettingsManager]: * sizeof long double=12 [2024-06-27 21:50:41,394 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-06-27 21:50:41,394 INFO L153 SettingsManager]: * Use constant arrays=true [2024-06-27 21:50:41,395 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-06-27 21:50:41,395 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-06-27 21:50:41,396 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-06-27 21:50:41,396 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-06-27 21:50:41,396 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-06-27 21:50:41,396 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-06-27 21:50:41,396 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-06-27 21:50:41,397 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-06-27 21:50:41,397 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-06-27 21:50:41,397 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-06-27 21:50:41,397 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-06-27 21:50:41,397 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-06-27 21:50:41,397 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2024-06-27 21:50:41,398 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-06-27 21:50:41,398 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-06-27 21:50:41,398 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessparser: Only consider loop invariants -> false [2024-06-27 21:50:41,554 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-06-27 21:50:41,567 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-06-27 21:50:41,569 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-06-27 21:50:41,570 INFO L270 PluginConnector]: Initializing CDTParser... [2024-06-27 21:50:41,570 INFO L274 PluginConnector]: CDTParser initialized [2024-06-27 21:50:41,571 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-wmm/safe018_pso.oepc_pso.opt_tso.oepc_tso.opt.i [2024-06-27 21:50:42,514 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-06-27 21:50:42,703 INFO L384 CDTParser]: Found 1 translation units. [2024-06-27 21:50:42,704 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/safe018_pso.oepc_pso.opt_tso.oepc_tso.opt.i [2024-06-27 21:50:42,718 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a876e1423/2c92904bae274d07a06c4dafc0f3c2ff/FLAGa1056df1e [2024-06-27 21:50:42,730 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a876e1423/2c92904bae274d07a06c4dafc0f3c2ff [2024-06-27 21:50:42,731 INFO L270 PluginConnector]: Initializing Witness Parser... [2024-06-27 21:50:42,732 INFO L274 PluginConnector]: Witness Parser initialized [2024-06-27 21:50:42,734 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/./goblint.2024-06-19_11-23-25.files/mutex-meet-rel/safe018_pso.oepc_pso.opt_tso.oepc_tso.opt.yml/witness.yml [2024-06-27 21:50:42,801 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-06-27 21:50:42,802 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2024-06-27 21:50:42,803 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-06-27 21:50:42,803 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-06-27 21:50:42,807 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-06-27 21:50:42,807 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.06 09:50:42" (1/2) ... [2024-06-27 21:50:42,808 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@78a10604 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 09:50:42, skipping insertion in model container [2024-06-27 21:50:42,808 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.06 09:50:42" (1/2) ... [2024-06-27 21:50:42,809 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@64e2c258 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 09:50:42, skipping insertion in model container [2024-06-27 21:50:42,809 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 27.06 09:50:42" (2/2) ... [2024-06-27 21:50:42,811 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@78a10604 and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 27.06 09:50:42, skipping insertion in model container [2024-06-27 21:50:42,811 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 27.06 09:50:42" (2/2) ... [2024-06-27 21:50:42,812 INFO L83 nessWitnessExtractor]: Extracting all invariants from correctness witness [2024-06-27 21:50:42,836 INFO L95 edCorrectnessWitness]: Found the following entries in the witness: [2024-06-27 21:50:42,837 INFO L97 edCorrectnessWitness]: Location invariant before [L780-L780] ! multithreaded || (((0LL - (long long )__unbuffered_p0_EAX) + (long long )y >= 0LL && (0LL - (long long )__unbuffered_p0_EBX) + (long long )x >= 0LL) && (0LL - (long long )__unbuffered_p2_EAX) + (long long )x >= 0LL) [2024-06-27 21:50:42,837 INFO L97 edCorrectnessWitness]: Location invariant before [L778-L778] ! multithreaded || (((0LL - (long long )__unbuffered_p0_EAX) + (long long )y >= 0LL && (0LL - (long long )__unbuffered_p0_EBX) + (long long )x >= 0LL) && (0LL - (long long )__unbuffered_p2_EAX) + (long long )x >= 0LL) [2024-06-27 21:50:42,837 INFO L97 edCorrectnessWitness]: Location invariant before [L781-L781] ! multithreaded || (((0LL - (long long )__unbuffered_p0_EAX) + (long long )y >= 0LL && (0LL - (long long )__unbuffered_p0_EBX) + (long long )x >= 0LL) && (0LL - (long long )__unbuffered_p2_EAX) + (long long )x >= 0LL) [2024-06-27 21:50:42,837 INFO L103 edCorrectnessWitness]: ghost_variable multithreaded = 0 [2024-06-27 21:50:42,838 INFO L106 edCorrectnessWitness]: ghost_update [L776-L776] multithreaded = 1; [2024-06-27 21:50:42,874 INFO L177 MainTranslator]: Built tables and reachable declarations [2024-06-27 21:50:42,986 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/safe018_pso.oepc_pso.opt_tso.oepc_tso.opt.i[975,988] [2024-06-27 21:50:43,077 INFO L207 PostProcessor]: Analyzing one entry point: main [2024-06-27 21:50:43,084 INFO L202 MainTranslator]: Completed pre-run Start Parsing Local [2024-06-27 21:50:43,109 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/safe018_pso.oepc_pso.opt_tso.oepc_tso.opt.i[975,988] Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local [2024-06-27 21:50:43,146 INFO L207 PostProcessor]: Analyzing one entry point: main [2024-06-27 21:50:43,207 INFO L206 MainTranslator]: Completed translation [2024-06-27 21:50:43,207 INFO L201 PluginConnector]: Adding new model witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 27.06 09:50:43 WrapperNode [2024-06-27 21:50:43,208 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-06-27 21:50:43,209 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-06-27 21:50:43,209 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-06-27 21:50:43,209 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-06-27 21:50:43,214 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 27.06 09:50:43" (1/1) ... [2024-06-27 21:50:43,240 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 27.06 09:50:43" (1/1) ... [2024-06-27 21:50:43,254 INFO L138 Inliner]: procedures = 175, calls = 39, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 64 [2024-06-27 21:50:43,255 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-06-27 21:50:43,255 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-06-27 21:50:43,255 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-06-27 21:50:43,256 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-06-27 21:50:43,263 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 27.06 09:50:43" (1/1) ... [2024-06-27 21:50:43,263 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 27.06 09:50:43" (1/1) ... [2024-06-27 21:50:43,269 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 27.06 09:50:43" (1/1) ... [2024-06-27 21:50:43,287 INFO L175 MemorySlicer]: Split 2 memory accesses to 1 slices as follows [2]. 100 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2]. The 0 writes are split as follows [0]. [2024-06-27 21:50:43,288 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 27.06 09:50:43" (1/1) ... [2024-06-27 21:50:43,288 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 27.06 09:50:43" (1/1) ... [2024-06-27 21:50:43,291 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 27.06 09:50:43" (1/1) ... [2024-06-27 21:50:43,293 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 27.06 09:50:43" (1/1) ... [2024-06-27 21:50:43,293 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 27.06 09:50:43" (1/1) ... [2024-06-27 21:50:43,294 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 27.06 09:50:43" (1/1) ... [2024-06-27 21:50:43,296 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-06-27 21:50:43,296 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-06-27 21:50:43,296 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-06-27 21:50:43,296 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-06-27 21:50:43,297 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 27.06 09:50:43" (1/1) ... [2024-06-27 21:50:43,316 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-06-27 21:50:43,322 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-06-27 21:50:43,341 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-06-27 21:50:43,346 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-06-27 21:50:43,368 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2024-06-27 21:50:43,368 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-06-27 21:50:43,368 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2024-06-27 21:50:43,369 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2024-06-27 21:50:43,369 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2024-06-27 21:50:43,369 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2024-06-27 21:50:43,369 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2024-06-27 21:50:43,369 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2024-06-27 21:50:43,369 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-06-27 21:50:43,369 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2024-06-27 21:50:43,369 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-06-27 21:50:43,369 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-06-27 21:50:43,371 WARN L214 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2024-06-27 21:50:43,489 INFO L244 CfgBuilder]: Building ICFG [2024-06-27 21:50:43,493 INFO L270 CfgBuilder]: Building CFG for each procedure with an implementation [2024-06-27 21:50:43,661 INFO L289 CfgBuilder]: Ommited future-live optimization because the input is a concurrent program. [2024-06-27 21:50:43,661 INFO L293 CfgBuilder]: Performing block encoding [2024-06-27 21:50:43,720 INFO L315 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-06-27 21:50:43,721 INFO L320 CfgBuilder]: Removed 0 assume(true) statements. [2024-06-27 21:50:43,721 INFO L201 PluginConnector]: Adding new model witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.06 09:50:43 BoogieIcfgContainer [2024-06-27 21:50:43,721 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-06-27 21:50:43,722 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-06-27 21:50:43,722 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-06-27 21:50:43,724 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-06-27 21:50:43,724 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 27.06 09:50:42" (1/4) ... [2024-06-27 21:50:43,725 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@959d965 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.06 09:50:43, skipping insertion in model container [2024-06-27 21:50:43,725 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 27.06 09:50:42" (2/4) ... [2024-06-27 21:50:43,725 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@959d965 and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CORRECTNESS_WITNESS 27.06 09:50:43, skipping insertion in model container [2024-06-27 21:50:43,725 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 27.06 09:50:43" (3/4) ... [2024-06-27 21:50:43,725 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@959d965 and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CORRECTNESS_WITNESS 27.06 09:50:43, skipping insertion in model container [2024-06-27 21:50:43,725 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.06 09:50:43" (4/4) ... [2024-06-27 21:50:43,726 INFO L112 eAbstractionObserver]: Analyzing ICFG safe018_pso.oepc_pso.opt_tso.oepc_tso.opt.i [2024-06-27 21:50:43,738 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-06-27 21:50:43,738 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 4 error locations. [2024-06-27 21:50:43,738 INFO L522 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-06-27 21:50:43,763 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2024-06-27 21:50:43,789 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 53 places, 44 transitions, 100 flow [2024-06-27 21:50:43,807 INFO L124 PetriNetUnfolderBase]: 1/41 cut-off events. [2024-06-27 21:50:43,807 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-06-27 21:50:43,812 INFO L83 FinitePrefix]: Finished finitePrefix Result has 51 conditions, 41 events. 1/41 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 62 event pairs, 0 based on Foata normal form. 0/36 useless extension candidates. Maximal degree in co-relation 42. Up to 2 conditions per place. [2024-06-27 21:50:43,812 INFO L82 GeneralOperation]: Start removeDead. Operand has 53 places, 44 transitions, 100 flow [2024-06-27 21:50:43,817 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 48 places, 38 transitions, 85 flow [2024-06-27 21:50:43,831 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-06-27 21:50:43,837 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;@28a88c4c, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-06-27 21:50:43,837 INFO L358 AbstractCegarLoop]: Starting to check reachability of 7 error locations. [2024-06-27 21:50:43,844 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-06-27 21:50:43,844 INFO L124 PetriNetUnfolderBase]: 0/5 cut-off events. [2024-06-27 21:50:43,844 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-06-27 21:50:43,844 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 21:50:43,845 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2024-06-27 21:50:43,845 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 21:50:43,849 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 21:50:43,849 INFO L85 PathProgramCache]: Analyzing trace with hash 208180420, now seen corresponding path program 1 times [2024-06-27 21:50:43,857 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 21:50:43,858 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1830205678] [2024-06-27 21:50:43,858 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 21:50:43,858 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 21:50:43,999 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 21:50:44,162 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 21:50:44,163 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 21:50:44,163 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1830205678] [2024-06-27 21:50:44,163 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1830205678] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 21:50:44,163 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 21:50:44,164 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-06-27 21:50:44,165 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1853183275] [2024-06-27 21:50:44,165 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 21:50:44,170 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-06-27 21:50:44,174 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 21:50:44,189 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-06-27 21:50:44,190 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-06-27 21:50:44,223 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 23 out of 44 [2024-06-27 21:50:44,227 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 48 places, 38 transitions, 85 flow. Second operand has 3 states, 3 states have (on average 24.333333333333332) internal successors, (73), 3 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 21:50:44,228 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 21:50:44,228 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 23 of 44 [2024-06-27 21:50:44,229 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 21:50:44,334 INFO L124 PetriNetUnfolderBase]: 171/392 cut-off events. [2024-06-27 21:50:44,334 INFO L125 PetriNetUnfolderBase]: For 5/5 co-relation queries the response was YES. [2024-06-27 21:50:44,335 INFO L83 FinitePrefix]: Finished finitePrefix Result has 703 conditions, 392 events. 171/392 cut-off events. For 5/5 co-relation queries the response was YES. Maximal size of possible extension queue 42. Compared 2094 event pairs, 108 based on Foata normal form. 2/374 useless extension candidates. Maximal degree in co-relation 691. Up to 259 conditions per place. [2024-06-27 21:50:44,338 INFO L140 encePairwiseOnDemand]: 38/44 looper letters, 24 selfloop transitions, 3 changer transitions 0/46 dead transitions. [2024-06-27 21:50:44,338 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 49 places, 46 transitions, 158 flow [2024-06-27 21:50:44,340 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-06-27 21:50:44,341 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-06-27 21:50:44,346 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 99 transitions. [2024-06-27 21:50:44,348 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.75 [2024-06-27 21:50:44,350 INFO L175 Difference]: Start difference. First operand has 48 places, 38 transitions, 85 flow. Second operand 3 states and 99 transitions. [2024-06-27 21:50:44,350 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 49 places, 46 transitions, 158 flow [2024-06-27 21:50:44,352 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 46 places, 46 transitions, 154 flow, removed 0 selfloop flow, removed 3 redundant places. [2024-06-27 21:50:44,356 INFO L231 Difference]: Finished difference. Result has 47 places, 39 transitions, 101 flow [2024-06-27 21:50:44,358 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=80, PETRI_DIFFERENCE_MINUEND_PLACES=44, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=37, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=34, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=101, PETRI_PLACES=47, PETRI_TRANSITIONS=39} [2024-06-27 21:50:44,362 INFO L281 CegarLoopForPetriNet]: 48 programPoint places, -1 predicate places. [2024-06-27 21:50:44,362 INFO L495 AbstractCegarLoop]: Abstraction has has 47 places, 39 transitions, 101 flow [2024-06-27 21:50:44,362 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 24.333333333333332) internal successors, (73), 3 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 21:50:44,362 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 21:50:44,362 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 21:50:44,363 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-06-27 21:50:44,363 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 21:50:44,364 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 21:50:44,364 INFO L85 PathProgramCache]: Analyzing trace with hash 1574484167, now seen corresponding path program 1 times [2024-06-27 21:50:44,364 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 21:50:44,364 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [168274826] [2024-06-27 21:50:44,364 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 21:50:44,365 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 21:50:44,386 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 21:50:44,517 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 21:50:44,518 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 21:50:44,518 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [168274826] [2024-06-27 21:50:44,518 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [168274826] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 21:50:44,518 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 21:50:44,518 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-06-27 21:50:44,518 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1670155473] [2024-06-27 21:50:44,518 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 21:50:44,519 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-06-27 21:50:44,519 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 21:50:44,520 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-06-27 21:50:44,520 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-06-27 21:50:44,542 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 21 out of 44 [2024-06-27 21:50:44,543 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 47 places, 39 transitions, 101 flow. Second operand has 4 states, 4 states have (on average 23.0) internal successors, (92), 4 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 21:50:44,543 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 21:50:44,543 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 21 of 44 [2024-06-27 21:50:44,543 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 21:50:44,673 INFO L124 PetriNetUnfolderBase]: 365/763 cut-off events. [2024-06-27 21:50:44,688 INFO L125 PetriNetUnfolderBase]: For 80/80 co-relation queries the response was YES. [2024-06-27 21:50:44,690 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1554 conditions, 763 events. 365/763 cut-off events. For 80/80 co-relation queries the response was YES. Maximal size of possible extension queue 60. Compared 4344 event pairs, 183 based on Foata normal form. 4/738 useless extension candidates. Maximal degree in co-relation 1542. Up to 542 conditions per place. [2024-06-27 21:50:44,693 INFO L140 encePairwiseOnDemand]: 38/44 looper letters, 37 selfloop transitions, 6 changer transitions 0/60 dead transitions. [2024-06-27 21:50:44,693 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 50 places, 60 transitions, 238 flow [2024-06-27 21:50:44,694 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-06-27 21:50:44,694 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-06-27 21:50:44,695 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 127 transitions. [2024-06-27 21:50:44,695 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.7215909090909091 [2024-06-27 21:50:44,695 INFO L175 Difference]: Start difference. First operand has 47 places, 39 transitions, 101 flow. Second operand 4 states and 127 transitions. [2024-06-27 21:50:44,695 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 50 places, 60 transitions, 238 flow [2024-06-27 21:50:44,696 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 49 places, 60 transitions, 234 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-06-27 21:50:44,697 INFO L231 Difference]: Finished difference. Result has 51 places, 44 transitions, 139 flow [2024-06-27 21:50:44,697 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=98, PETRI_DIFFERENCE_MINUEND_PLACES=46, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=39, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=35, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=139, PETRI_PLACES=51, PETRI_TRANSITIONS=44} [2024-06-27 21:50:44,698 INFO L281 CegarLoopForPetriNet]: 48 programPoint places, 3 predicate places. [2024-06-27 21:50:44,698 INFO L495 AbstractCegarLoop]: Abstraction has has 51 places, 44 transitions, 139 flow [2024-06-27 21:50:44,698 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 23.0) internal successors, (92), 4 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 21:50:44,698 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 21:50:44,698 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 21:50:44,698 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-06-27 21:50:44,699 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 21:50:44,699 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 21:50:44,699 INFO L85 PathProgramCache]: Analyzing trace with hash 423233608, now seen corresponding path program 1 times [2024-06-27 21:50:44,699 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 21:50:44,699 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [613168795] [2024-06-27 21:50:44,699 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 21:50:44,700 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 21:50:44,721 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 21:50:44,886 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 21:50:44,886 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 21:50:44,886 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [613168795] [2024-06-27 21:50:44,886 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [613168795] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 21:50:44,886 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 21:50:44,886 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-06-27 21:50:44,887 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1203795841] [2024-06-27 21:50:44,887 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 21:50:44,887 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-06-27 21:50:44,888 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 21:50:44,889 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-06-27 21:50:44,889 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-06-27 21:50:44,932 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 20 out of 44 [2024-06-27 21:50:44,932 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 51 places, 44 transitions, 139 flow. Second operand has 6 states, 6 states have (on average 21.666666666666668) internal successors, (130), 6 states have internal predecessors, (130), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 21:50:44,932 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 21:50:44,932 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 20 of 44 [2024-06-27 21:50:44,932 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 21:50:45,070 INFO L124 PetriNetUnfolderBase]: 609/1226 cut-off events. [2024-06-27 21:50:45,070 INFO L125 PetriNetUnfolderBase]: For 440/443 co-relation queries the response was YES. [2024-06-27 21:50:45,072 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2728 conditions, 1226 events. 609/1226 cut-off events. For 440/443 co-relation queries the response was YES. Maximal size of possible extension queue 97. Compared 7770 event pairs, 67 based on Foata normal form. 16/1217 useless extension candidates. Maximal degree in co-relation 2713. Up to 639 conditions per place. [2024-06-27 21:50:45,076 INFO L140 encePairwiseOnDemand]: 37/44 looper letters, 41 selfloop transitions, 9 changer transitions 0/66 dead transitions. [2024-06-27 21:50:45,077 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 54 places, 66 transitions, 297 flow [2024-06-27 21:50:45,077 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-06-27 21:50:45,077 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-06-27 21:50:45,078 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 127 transitions. [2024-06-27 21:50:45,078 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.7215909090909091 [2024-06-27 21:50:45,078 INFO L175 Difference]: Start difference. First operand has 51 places, 44 transitions, 139 flow. Second operand 4 states and 127 transitions. [2024-06-27 21:50:45,078 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 54 places, 66 transitions, 297 flow [2024-06-27 21:50:45,080 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 54 places, 66 transitions, 297 flow, removed 0 selfloop flow, removed 0 redundant places. [2024-06-27 21:50:45,081 INFO L231 Difference]: Finished difference. Result has 55 places, 47 transitions, 186 flow [2024-06-27 21:50:45,081 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=139, PETRI_DIFFERENCE_MINUEND_PLACES=51, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=44, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=35, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=186, PETRI_PLACES=55, PETRI_TRANSITIONS=47} [2024-06-27 21:50:45,081 INFO L281 CegarLoopForPetriNet]: 48 programPoint places, 7 predicate places. [2024-06-27 21:50:45,081 INFO L495 AbstractCegarLoop]: Abstraction has has 55 places, 47 transitions, 186 flow [2024-06-27 21:50:45,081 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 21.666666666666668) internal successors, (130), 6 states have internal predecessors, (130), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 21:50:45,082 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 21:50:45,082 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 21:50:45,082 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-06-27 21:50:45,082 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 21:50:45,082 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 21:50:45,082 INFO L85 PathProgramCache]: Analyzing trace with hash 423353578, now seen corresponding path program 2 times [2024-06-27 21:50:45,082 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 21:50:45,082 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [295870327] [2024-06-27 21:50:45,083 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 21:50:45,083 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 21:50:45,088 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 21:50:45,157 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 21:50:45,157 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 21:50:45,157 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [295870327] [2024-06-27 21:50:45,157 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [295870327] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 21:50:45,157 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 21:50:45,157 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-06-27 21:50:45,157 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [910808235] [2024-06-27 21:50:45,158 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 21:50:45,158 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-06-27 21:50:45,158 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 21:50:45,158 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-06-27 21:50:45,158 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2024-06-27 21:50:45,177 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 20 out of 44 [2024-06-27 21:50:45,177 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 55 places, 47 transitions, 186 flow. Second operand has 6 states, 6 states have (on average 21.666666666666668) internal successors, (130), 6 states have internal predecessors, (130), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 21:50:45,177 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 21:50:45,177 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 20 of 44 [2024-06-27 21:50:45,178 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 21:50:45,347 INFO L124 PetriNetUnfolderBase]: 597/1230 cut-off events. [2024-06-27 21:50:45,347 INFO L125 PetriNetUnfolderBase]: For 1013/1016 co-relation queries the response was YES. [2024-06-27 21:50:45,350 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3067 conditions, 1230 events. 597/1230 cut-off events. For 1013/1016 co-relation queries the response was YES. Maximal size of possible extension queue 93. Compared 7858 event pairs, 111 based on Foata normal form. 8/1201 useless extension candidates. Maximal degree in co-relation 3049. Up to 665 conditions per place. [2024-06-27 21:50:45,355 INFO L140 encePairwiseOnDemand]: 38/44 looper letters, 45 selfloop transitions, 9 changer transitions 0/70 dead transitions. [2024-06-27 21:50:45,355 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 58 places, 70 transitions, 349 flow [2024-06-27 21:50:45,355 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-06-27 21:50:45,355 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-06-27 21:50:45,362 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 149 transitions. [2024-06-27 21:50:45,363 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6772727272727272 [2024-06-27 21:50:45,363 INFO L175 Difference]: Start difference. First operand has 55 places, 47 transitions, 186 flow. Second operand 5 states and 149 transitions. [2024-06-27 21:50:45,363 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 58 places, 70 transitions, 349 flow [2024-06-27 21:50:45,365 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 55 places, 70 transitions, 330 flow, removed 2 selfloop flow, removed 3 redundant places. [2024-06-27 21:50:45,366 INFO L231 Difference]: Finished difference. Result has 57 places, 48 transitions, 203 flow [2024-06-27 21:50:45,366 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=160, PETRI_DIFFERENCE_MINUEND_PLACES=51, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=46, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=38, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=203, PETRI_PLACES=57, PETRI_TRANSITIONS=48} [2024-06-27 21:50:45,367 INFO L281 CegarLoopForPetriNet]: 48 programPoint places, 9 predicate places. [2024-06-27 21:50:45,367 INFO L495 AbstractCegarLoop]: Abstraction has has 57 places, 48 transitions, 203 flow [2024-06-27 21:50:45,367 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 21.666666666666668) internal successors, (130), 6 states have internal predecessors, (130), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 21:50:45,367 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 21:50:45,367 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 21:50:45,367 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-06-27 21:50:45,367 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 21:50:45,368 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 21:50:45,368 INFO L85 PathProgramCache]: Analyzing trace with hash -507666631, now seen corresponding path program 1 times [2024-06-27 21:50:45,368 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 21:50:45,368 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1485965403] [2024-06-27 21:50:45,368 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 21:50:45,368 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 21:50:45,374 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 21:50:45,437 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 21:50:45,437 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 21:50:45,437 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1485965403] [2024-06-27 21:50:45,437 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1485965403] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 21:50:45,438 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 21:50:45,438 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-06-27 21:50:45,438 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [703703529] [2024-06-27 21:50:45,438 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 21:50:45,438 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-06-27 21:50:45,438 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 21:50:45,439 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-06-27 21:50:45,439 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2024-06-27 21:50:45,459 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 21 out of 44 [2024-06-27 21:50:45,459 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 57 places, 48 transitions, 203 flow. Second operand has 5 states, 5 states have (on average 23.4) internal successors, (117), 5 states have internal predecessors, (117), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 21:50:45,459 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 21:50:45,459 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 21 of 44 [2024-06-27 21:50:45,459 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 21:50:45,549 INFO L124 PetriNetUnfolderBase]: 542/1134 cut-off events. [2024-06-27 21:50:45,549 INFO L125 PetriNetUnfolderBase]: For 905/910 co-relation queries the response was YES. [2024-06-27 21:50:45,551 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2794 conditions, 1134 events. 542/1134 cut-off events. For 905/910 co-relation queries the response was YES. Maximal size of possible extension queue 90. Compared 7166 event pairs, 253 based on Foata normal form. 7/1107 useless extension candidates. Maximal degree in co-relation 2775. Up to 788 conditions per place. [2024-06-27 21:50:45,555 INFO L140 encePairwiseOnDemand]: 39/44 looper letters, 41 selfloop transitions, 7 changer transitions 0/68 dead transitions. [2024-06-27 21:50:45,555 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 60 places, 68 transitions, 371 flow [2024-06-27 21:50:45,555 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-06-27 21:50:45,555 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-06-27 21:50:45,556 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 123 transitions. [2024-06-27 21:50:45,556 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6988636363636364 [2024-06-27 21:50:45,556 INFO L175 Difference]: Start difference. First operand has 57 places, 48 transitions, 203 flow. Second operand 4 states and 123 transitions. [2024-06-27 21:50:45,556 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 60 places, 68 transitions, 371 flow [2024-06-27 21:50:45,558 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 59 places, 68 transitions, 354 flow, removed 5 selfloop flow, removed 1 redundant places. [2024-06-27 21:50:45,559 INFO L231 Difference]: Finished difference. Result has 61 places, 54 transitions, 255 flow [2024-06-27 21:50:45,559 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=189, PETRI_DIFFERENCE_MINUEND_PLACES=56, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=48, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=42, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=255, PETRI_PLACES=61, PETRI_TRANSITIONS=54} [2024-06-27 21:50:45,559 INFO L281 CegarLoopForPetriNet]: 48 programPoint places, 13 predicate places. [2024-06-27 21:50:45,560 INFO L495 AbstractCegarLoop]: Abstraction has has 61 places, 54 transitions, 255 flow [2024-06-27 21:50:45,560 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 23.4) internal successors, (117), 5 states have internal predecessors, (117), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 21:50:45,560 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 21:50:45,560 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 21:50:45,560 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-06-27 21:50:45,560 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 21:50:45,560 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 21:50:45,560 INFO L85 PathProgramCache]: Analyzing trace with hash 1437435855, now seen corresponding path program 1 times [2024-06-27 21:50:45,560 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 21:50:45,561 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1037573379] [2024-06-27 21:50:45,561 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 21:50:45,561 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 21:50:45,566 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 21:50:45,628 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 21:50:45,628 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 21:50:45,628 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1037573379] [2024-06-27 21:50:45,628 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1037573379] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 21:50:45,628 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 21:50:45,628 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-06-27 21:50:45,628 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1539514977] [2024-06-27 21:50:45,629 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 21:50:45,629 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-06-27 21:50:45,629 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 21:50:45,629 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-06-27 21:50:45,629 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2024-06-27 21:50:45,653 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 21 out of 44 [2024-06-27 21:50:45,653 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 61 places, 54 transitions, 255 flow. Second operand has 5 states, 5 states have (on average 23.4) internal successors, (117), 5 states have internal predecessors, (117), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 21:50:45,653 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 21:50:45,653 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 21 of 44 [2024-06-27 21:50:45,653 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 21:50:45,754 INFO L124 PetriNetUnfolderBase]: 519/1117 cut-off events. [2024-06-27 21:50:45,754 INFO L125 PetriNetUnfolderBase]: For 1128/1128 co-relation queries the response was YES. [2024-06-27 21:50:45,755 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2849 conditions, 1117 events. 519/1117 cut-off events. For 1128/1128 co-relation queries the response was YES. Maximal size of possible extension queue 91. Compared 7270 event pairs, 128 based on Foata normal form. 4/1102 useless extension candidates. Maximal degree in co-relation 2827. Up to 688 conditions per place. [2024-06-27 21:50:45,759 INFO L140 encePairwiseOnDemand]: 38/44 looper letters, 46 selfloop transitions, 15 changer transitions 0/80 dead transitions. [2024-06-27 21:50:45,759 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 65 places, 80 transitions, 461 flow [2024-06-27 21:50:45,760 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-06-27 21:50:45,760 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-06-27 21:50:45,760 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 154 transitions. [2024-06-27 21:50:45,760 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.7 [2024-06-27 21:50:45,760 INFO L175 Difference]: Start difference. First operand has 61 places, 54 transitions, 255 flow. Second operand 5 states and 154 transitions. [2024-06-27 21:50:45,760 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 65 places, 80 transitions, 461 flow [2024-06-27 21:50:45,763 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 65 places, 80 transitions, 459 flow, removed 1 selfloop flow, removed 0 redundant places. [2024-06-27 21:50:45,764 INFO L231 Difference]: Finished difference. Result has 68 places, 60 transitions, 353 flow [2024-06-27 21:50:45,765 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=253, PETRI_DIFFERENCE_MINUEND_PLACES=61, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=54, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=40, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=353, PETRI_PLACES=68, PETRI_TRANSITIONS=60} [2024-06-27 21:50:45,765 INFO L281 CegarLoopForPetriNet]: 48 programPoint places, 20 predicate places. [2024-06-27 21:50:45,765 INFO L495 AbstractCegarLoop]: Abstraction has has 68 places, 60 transitions, 353 flow [2024-06-27 21:50:45,765 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 23.4) internal successors, (117), 5 states have internal predecessors, (117), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 21:50:45,765 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 21:50:45,766 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 21:50:45,766 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-06-27 21:50:45,766 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 21:50:45,766 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 21:50:45,766 INFO L85 PathProgramCache]: Analyzing trace with hash -1957263272, now seen corresponding path program 1 times [2024-06-27 21:50:45,766 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 21:50:45,766 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1807583617] [2024-06-27 21:50:45,766 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 21:50:45,767 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 21:50:45,772 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 21:50:45,854 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 21:50:45,855 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 21:50:45,855 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1807583617] [2024-06-27 21:50:45,855 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1807583617] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 21:50:45,855 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 21:50:45,855 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-06-27 21:50:45,856 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [826761110] [2024-06-27 21:50:45,856 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 21:50:45,857 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-06-27 21:50:45,857 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 21:50:45,857 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-06-27 21:50:45,857 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-06-27 21:50:45,889 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 21 out of 44 [2024-06-27 21:50:45,890 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 68 places, 60 transitions, 353 flow. Second operand has 6 states, 6 states have (on average 23.166666666666668) internal successors, (139), 6 states have internal predecessors, (139), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 21:50:45,890 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 21:50:45,890 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 21 of 44 [2024-06-27 21:50:45,890 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 21:50:46,014 INFO L124 PetriNetUnfolderBase]: 559/1214 cut-off events. [2024-06-27 21:50:46,014 INFO L125 PetriNetUnfolderBase]: For 1921/1928 co-relation queries the response was YES. [2024-06-27 21:50:46,017 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3293 conditions, 1214 events. 559/1214 cut-off events. For 1921/1928 co-relation queries the response was YES. Maximal size of possible extension queue 96. Compared 8073 event pairs, 191 based on Foata normal form. 13/1201 useless extension candidates. Maximal degree in co-relation 3266. Up to 703 conditions per place. [2024-06-27 21:50:46,022 INFO L140 encePairwiseOnDemand]: 39/44 looper letters, 38 selfloop transitions, 13 changer transitions 0/73 dead transitions. [2024-06-27 21:50:46,022 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 71 places, 73 transitions, 487 flow [2024-06-27 21:50:46,023 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-06-27 21:50:46,023 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-06-27 21:50:46,023 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 122 transitions. [2024-06-27 21:50:46,023 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6931818181818182 [2024-06-27 21:50:46,023 INFO L175 Difference]: Start difference. First operand has 68 places, 60 transitions, 353 flow. Second operand 4 states and 122 transitions. [2024-06-27 21:50:46,024 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 71 places, 73 transitions, 487 flow [2024-06-27 21:50:46,028 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 71 places, 73 transitions, 473 flow, removed 7 selfloop flow, removed 0 redundant places. [2024-06-27 21:50:46,030 INFO L231 Difference]: Finished difference. Result has 72 places, 61 transitions, 381 flow [2024-06-27 21:50:46,030 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=339, PETRI_DIFFERENCE_MINUEND_PLACES=68, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=60, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=47, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=381, PETRI_PLACES=72, PETRI_TRANSITIONS=61} [2024-06-27 21:50:46,031 INFO L281 CegarLoopForPetriNet]: 48 programPoint places, 24 predicate places. [2024-06-27 21:50:46,031 INFO L495 AbstractCegarLoop]: Abstraction has has 72 places, 61 transitions, 381 flow [2024-06-27 21:50:46,031 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 23.166666666666668) internal successors, (139), 6 states have internal predecessors, (139), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 21:50:46,031 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 21:50:46,031 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 21:50:46,031 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-06-27 21:50:46,032 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 21:50:46,032 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 21:50:46,032 INFO L85 PathProgramCache]: Analyzing trace with hash -1956877322, now seen corresponding path program 2 times [2024-06-27 21:50:46,033 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 21:50:46,033 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1879966390] [2024-06-27 21:50:46,033 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 21:50:46,033 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 21:50:46,039 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 21:50:46,139 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 21:50:46,140 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 21:50:46,140 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1879966390] [2024-06-27 21:50:46,140 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1879966390] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 21:50:46,140 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 21:50:46,140 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-06-27 21:50:46,140 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [757409578] [2024-06-27 21:50:46,140 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 21:50:46,141 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-06-27 21:50:46,141 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 21:50:46,141 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-06-27 21:50:46,141 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2024-06-27 21:50:46,161 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 21 out of 44 [2024-06-27 21:50:46,161 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 72 places, 61 transitions, 381 flow. Second operand has 6 states, 6 states have (on average 23.166666666666668) internal successors, (139), 6 states have internal predecessors, (139), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 21:50:46,161 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 21:50:46,161 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 21 of 44 [2024-06-27 21:50:46,161 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 21:50:46,265 INFO L124 PetriNetUnfolderBase]: 550/1153 cut-off events. [2024-06-27 21:50:46,265 INFO L125 PetriNetUnfolderBase]: For 2305/2310 co-relation queries the response was YES. [2024-06-27 21:50:46,267 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3319 conditions, 1153 events. 550/1153 cut-off events. For 2305/2310 co-relation queries the response was YES. Maximal size of possible extension queue 94. Compared 7579 event pairs, 115 based on Foata normal form. 11/1148 useless extension candidates. Maximal degree in co-relation 3289. Up to 650 conditions per place. [2024-06-27 21:50:46,272 INFO L140 encePairwiseOnDemand]: 39/44 looper letters, 42 selfloop transitions, 14 changer transitions 0/78 dead transitions. [2024-06-27 21:50:46,274 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 76 places, 78 transitions, 529 flow [2024-06-27 21:50:46,275 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-06-27 21:50:46,275 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-06-27 21:50:46,275 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 148 transitions. [2024-06-27 21:50:46,278 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6727272727272727 [2024-06-27 21:50:46,278 INFO L175 Difference]: Start difference. First operand has 72 places, 61 transitions, 381 flow. Second operand 5 states and 148 transitions. [2024-06-27 21:50:46,278 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 76 places, 78 transitions, 529 flow [2024-06-27 21:50:46,282 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 74 places, 78 transitions, 503 flow, removed 3 selfloop flow, removed 2 redundant places. [2024-06-27 21:50:46,283 INFO L231 Difference]: Finished difference. Result has 75 places, 61 transitions, 387 flow [2024-06-27 21:50:46,283 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=355, PETRI_DIFFERENCE_MINUEND_PLACES=70, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=61, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=47, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=387, PETRI_PLACES=75, PETRI_TRANSITIONS=61} [2024-06-27 21:50:46,284 INFO L281 CegarLoopForPetriNet]: 48 programPoint places, 27 predicate places. [2024-06-27 21:50:46,285 INFO L495 AbstractCegarLoop]: Abstraction has has 75 places, 61 transitions, 387 flow [2024-06-27 21:50:46,285 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 23.166666666666668) internal successors, (139), 6 states have internal predecessors, (139), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 21:50:46,285 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 21:50:46,285 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 21:50:46,285 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-06-27 21:50:46,285 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 21:50:46,286 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 21:50:46,286 INFO L85 PathProgramCache]: Analyzing trace with hash -770648800, now seen corresponding path program 1 times [2024-06-27 21:50:46,286 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 21:50:46,286 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [34507576] [2024-06-27 21:50:46,286 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 21:50:46,286 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 21:50:46,298 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 21:50:46,386 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 21:50:46,386 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 21:50:46,386 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [34507576] [2024-06-27 21:50:46,387 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [34507576] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 21:50:46,387 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 21:50:46,387 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-06-27 21:50:46,387 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1698094614] [2024-06-27 21:50:46,387 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 21:50:46,387 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-06-27 21:50:46,388 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 21:50:46,388 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-06-27 21:50:46,388 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2024-06-27 21:50:46,409 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 20 out of 44 [2024-06-27 21:50:46,410 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 75 places, 61 transitions, 387 flow. Second operand has 6 states, 6 states have (on average 22.166666666666668) internal successors, (133), 6 states have internal predecessors, (133), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 21:50:46,410 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 21:50:46,410 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 20 of 44 [2024-06-27 21:50:46,410 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 21:50:46,528 INFO L124 PetriNetUnfolderBase]: 643/1284 cut-off events. [2024-06-27 21:50:46,529 INFO L125 PetriNetUnfolderBase]: For 2361/2361 co-relation queries the response was YES. [2024-06-27 21:50:46,531 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3817 conditions, 1284 events. 643/1284 cut-off events. For 2361/2361 co-relation queries the response was YES. Maximal size of possible extension queue 103. Compared 8279 event pairs, 143 based on Foata normal form. 4/1261 useless extension candidates. Maximal degree in co-relation 3786. Up to 827 conditions per place. [2024-06-27 21:50:46,535 INFO L140 encePairwiseOnDemand]: 38/44 looper letters, 68 selfloop transitions, 11 changer transitions 0/95 dead transitions. [2024-06-27 21:50:46,535 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 80 places, 95 transitions, 657 flow [2024-06-27 21:50:46,536 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-27 21:50:46,536 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-27 21:50:46,536 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 178 transitions. [2024-06-27 21:50:46,537 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6742424242424242 [2024-06-27 21:50:46,537 INFO L175 Difference]: Start difference. First operand has 75 places, 61 transitions, 387 flow. Second operand 6 states and 178 transitions. [2024-06-27 21:50:46,537 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 80 places, 95 transitions, 657 flow [2024-06-27 21:50:46,541 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 77 places, 95 transitions, 627 flow, removed 2 selfloop flow, removed 3 redundant places. [2024-06-27 21:50:46,544 INFO L231 Difference]: Finished difference. Result has 80 places, 65 transitions, 419 flow [2024-06-27 21:50:46,544 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=357, PETRI_DIFFERENCE_MINUEND_PLACES=72, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=61, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=52, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=419, PETRI_PLACES=80, PETRI_TRANSITIONS=65} [2024-06-27 21:50:46,545 INFO L281 CegarLoopForPetriNet]: 48 programPoint places, 32 predicate places. [2024-06-27 21:50:46,545 INFO L495 AbstractCegarLoop]: Abstraction has has 80 places, 65 transitions, 419 flow [2024-06-27 21:50:46,545 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 22.166666666666668) internal successors, (133), 6 states have internal predecessors, (133), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 21:50:46,545 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 21:50:46,545 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 21:50:46,545 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-06-27 21:50:46,546 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 21:50:46,547 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 21:50:46,547 INFO L85 PathProgramCache]: Analyzing trace with hash -1956871370, now seen corresponding path program 2 times [2024-06-27 21:50:46,553 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 21:50:46,555 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [456212115] [2024-06-27 21:50:46,555 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 21:50:46,555 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 21:50:46,562 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 21:50:46,638 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 21:50:46,638 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 21:50:46,638 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [456212115] [2024-06-27 21:50:46,639 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [456212115] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 21:50:46,639 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 21:50:46,639 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-06-27 21:50:46,639 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [316077468] [2024-06-27 21:50:46,639 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 21:50:46,640 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-06-27 21:50:46,640 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 21:50:46,640 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-06-27 21:50:46,641 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2024-06-27 21:50:46,666 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 20 out of 44 [2024-06-27 21:50:46,667 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 80 places, 65 transitions, 419 flow. Second operand has 6 states, 6 states have (on average 22.166666666666668) internal successors, (133), 6 states have internal predecessors, (133), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 21:50:46,667 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 21:50:46,667 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 20 of 44 [2024-06-27 21:50:46,667 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 21:50:46,808 INFO L124 PetriNetUnfolderBase]: 671/1344 cut-off events. [2024-06-27 21:50:46,809 INFO L125 PetriNetUnfolderBase]: For 2512/2512 co-relation queries the response was YES. [2024-06-27 21:50:46,811 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4049 conditions, 1344 events. 671/1344 cut-off events. For 2512/2512 co-relation queries the response was YES. Maximal size of possible extension queue 111. Compared 8707 event pairs, 137 based on Foata normal form. 4/1323 useless extension candidates. Maximal degree in co-relation 4015. Up to 897 conditions per place. [2024-06-27 21:50:46,816 INFO L140 encePairwiseOnDemand]: 38/44 looper letters, 72 selfloop transitions, 12 changer transitions 0/100 dead transitions. [2024-06-27 21:50:46,817 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 86 places, 100 transitions, 697 flow [2024-06-27 21:50:46,817 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-27 21:50:46,817 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-27 21:50:46,818 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 203 transitions. [2024-06-27 21:50:46,818 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6590909090909091 [2024-06-27 21:50:46,818 INFO L175 Difference]: Start difference. First operand has 80 places, 65 transitions, 419 flow. Second operand 7 states and 203 transitions. [2024-06-27 21:50:46,818 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 86 places, 100 transitions, 697 flow [2024-06-27 21:50:46,823 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 83 places, 100 transitions, 667 flow, removed 5 selfloop flow, removed 3 redundant places. [2024-06-27 21:50:46,824 INFO L231 Difference]: Finished difference. Result has 85 places, 68 transitions, 445 flow [2024-06-27 21:50:46,824 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=395, PETRI_DIFFERENCE_MINUEND_PLACES=77, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=65, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=55, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=445, PETRI_PLACES=85, PETRI_TRANSITIONS=68} [2024-06-27 21:50:46,825 INFO L281 CegarLoopForPetriNet]: 48 programPoint places, 37 predicate places. [2024-06-27 21:50:46,825 INFO L495 AbstractCegarLoop]: Abstraction has has 85 places, 68 transitions, 445 flow [2024-06-27 21:50:46,825 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 22.166666666666668) internal successors, (133), 6 states have internal predecessors, (133), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 21:50:46,825 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 21:50:46,825 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 21:50:46,825 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-06-27 21:50:46,826 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 21:50:46,826 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 21:50:46,826 INFO L85 PathProgramCache]: Analyzing trace with hash -194048800, now seen corresponding path program 3 times [2024-06-27 21:50:46,826 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 21:50:46,826 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [424739208] [2024-06-27 21:50:46,826 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 21:50:46,826 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 21:50:46,833 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 21:50:46,900 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 21:50:46,900 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 21:50:46,900 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [424739208] [2024-06-27 21:50:46,900 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [424739208] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 21:50:46,900 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 21:50:46,901 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-06-27 21:50:46,901 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1521405209] [2024-06-27 21:50:46,901 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 21:50:46,901 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-06-27 21:50:46,901 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 21:50:46,902 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-06-27 21:50:46,902 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2024-06-27 21:50:46,918 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 20 out of 44 [2024-06-27 21:50:46,918 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 85 places, 68 transitions, 445 flow. Second operand has 6 states, 6 states have (on average 22.166666666666668) internal successors, (133), 6 states have internal predecessors, (133), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 21:50:46,918 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 21:50:46,918 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 20 of 44 [2024-06-27 21:50:46,919 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 21:50:47,049 INFO L124 PetriNetUnfolderBase]: 663/1360 cut-off events. [2024-06-27 21:50:47,049 INFO L125 PetriNetUnfolderBase]: For 2882/2882 co-relation queries the response was YES. [2024-06-27 21:50:47,052 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3988 conditions, 1360 events. 663/1360 cut-off events. For 2882/2882 co-relation queries the response was YES. Maximal size of possible extension queue 109. Compared 8921 event pairs, 265 based on Foata normal form. 4/1333 useless extension candidates. Maximal degree in co-relation 3953. Up to 893 conditions per place. [2024-06-27 21:50:47,057 INFO L140 encePairwiseOnDemand]: 38/44 looper letters, 65 selfloop transitions, 11 changer transitions 0/92 dead transitions. [2024-06-27 21:50:47,058 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 89 places, 92 transitions, 656 flow [2024-06-27 21:50:47,058 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-06-27 21:50:47,058 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-06-27 21:50:47,059 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 152 transitions. [2024-06-27 21:50:47,059 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6909090909090909 [2024-06-27 21:50:47,059 INFO L175 Difference]: Start difference. First operand has 85 places, 68 transitions, 445 flow. Second operand 5 states and 152 transitions. [2024-06-27 21:50:47,059 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 89 places, 92 transitions, 656 flow [2024-06-27 21:50:47,064 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 85 places, 92 transitions, 634 flow, removed 0 selfloop flow, removed 4 redundant places. [2024-06-27 21:50:47,065 INFO L231 Difference]: Finished difference. Result has 86 places, 68 transitions, 449 flow [2024-06-27 21:50:47,065 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=423, PETRI_DIFFERENCE_MINUEND_PLACES=81, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=68, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=57, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=449, PETRI_PLACES=86, PETRI_TRANSITIONS=68} [2024-06-27 21:50:47,066 INFO L281 CegarLoopForPetriNet]: 48 programPoint places, 38 predicate places. [2024-06-27 21:50:47,066 INFO L495 AbstractCegarLoop]: Abstraction has has 86 places, 68 transitions, 449 flow [2024-06-27 21:50:47,066 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 22.166666666666668) internal successors, (133), 6 states have internal predecessors, (133), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 21:50:47,066 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 21:50:47,066 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 21:50:47,066 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2024-06-27 21:50:47,067 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 21:50:47,067 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 21:50:47,067 INFO L85 PathProgramCache]: Analyzing trace with hash -260827472, now seen corresponding path program 1 times [2024-06-27 21:50:47,067 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 21:50:47,067 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2126223136] [2024-06-27 21:50:47,067 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 21:50:47,068 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 21:50:47,072 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 21:50:47,154 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 21:50:47,154 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 21:50:47,154 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2126223136] [2024-06-27 21:50:47,154 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2126223136] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 21:50:47,154 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 21:50:47,155 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-27 21:50:47,155 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [97673890] [2024-06-27 21:50:47,155 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 21:50:47,155 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-27 21:50:47,155 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 21:50:47,156 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-27 21:50:47,156 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2024-06-27 21:50:47,181 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 20 out of 44 [2024-06-27 21:50:47,181 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 86 places, 68 transitions, 449 flow. Second operand has 7 states, 7 states have (on average 22.0) internal successors, (154), 7 states have internal predecessors, (154), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 21:50:47,181 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 21:50:47,182 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 20 of 44 [2024-06-27 21:50:47,182 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 21:50:47,329 INFO L124 PetriNetUnfolderBase]: 691/1436 cut-off events. [2024-06-27 21:50:47,329 INFO L125 PetriNetUnfolderBase]: For 3325/3328 co-relation queries the response was YES. [2024-06-27 21:50:47,332 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4193 conditions, 1436 events. 691/1436 cut-off events. For 3325/3328 co-relation queries the response was YES. Maximal size of possible extension queue 115. Compared 9606 event pairs, 99 based on Foata normal form. 4/1417 useless extension candidates. Maximal degree in co-relation 4157. Up to 681 conditions per place. [2024-06-27 21:50:47,339 INFO L140 encePairwiseOnDemand]: 38/44 looper letters, 51 selfloop transitions, 22 changer transitions 0/89 dead transitions. [2024-06-27 21:50:47,339 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 90 places, 89 transitions, 647 flow [2024-06-27 21:50:47,340 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-06-27 21:50:47,340 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-06-27 21:50:47,340 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 153 transitions. [2024-06-27 21:50:47,340 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6954545454545454 [2024-06-27 21:50:47,340 INFO L175 Difference]: Start difference. First operand has 86 places, 68 transitions, 449 flow. Second operand 5 states and 153 transitions. [2024-06-27 21:50:47,341 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 90 places, 89 transitions, 647 flow [2024-06-27 21:50:47,346 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 86 places, 89 transitions, 625 flow, removed 0 selfloop flow, removed 4 redundant places. [2024-06-27 21:50:47,348 INFO L231 Difference]: Finished difference. Result has 87 places, 69 transitions, 490 flow [2024-06-27 21:50:47,348 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=427, PETRI_DIFFERENCE_MINUEND_PLACES=82, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=68, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=21, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=46, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=490, PETRI_PLACES=87, PETRI_TRANSITIONS=69} [2024-06-27 21:50:47,349 INFO L281 CegarLoopForPetriNet]: 48 programPoint places, 39 predicate places. [2024-06-27 21:50:47,349 INFO L495 AbstractCegarLoop]: Abstraction has has 87 places, 69 transitions, 490 flow [2024-06-27 21:50:47,351 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 22.0) internal successors, (154), 7 states have internal predecessors, (154), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 21:50:47,351 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 21:50:47,351 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 21:50:47,351 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2024-06-27 21:50:47,351 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 21:50:47,352 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 21:50:47,352 INFO L85 PathProgramCache]: Analyzing trace with hash 431964962, now seen corresponding path program 2 times [2024-06-27 21:50:47,352 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 21:50:47,352 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [694679816] [2024-06-27 21:50:47,352 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 21:50:47,352 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 21:50:47,359 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 21:50:47,436 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 21:50:47,436 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 21:50:47,436 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [694679816] [2024-06-27 21:50:47,436 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [694679816] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 21:50:47,436 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 21:50:47,436 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-27 21:50:47,437 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2078913041] [2024-06-27 21:50:47,437 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 21:50:47,437 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-27 21:50:47,437 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 21:50:47,438 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-27 21:50:47,438 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2024-06-27 21:50:47,459 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 20 out of 44 [2024-06-27 21:50:47,459 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 87 places, 69 transitions, 490 flow. Second operand has 7 states, 7 states have (on average 22.0) internal successors, (154), 7 states have internal predecessors, (154), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 21:50:47,459 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 21:50:47,459 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 20 of 44 [2024-06-27 21:50:47,459 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 21:50:47,594 INFO L124 PetriNetUnfolderBase]: 719/1464 cut-off events. [2024-06-27 21:50:47,595 INFO L125 PetriNetUnfolderBase]: For 3832/3835 co-relation queries the response was YES. [2024-06-27 21:50:47,597 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4481 conditions, 1464 events. 719/1464 cut-off events. For 3832/3835 co-relation queries the response was YES. Maximal size of possible extension queue 122. Compared 9837 event pairs, 91 based on Foata normal form. 4/1443 useless extension candidates. Maximal degree in co-relation 4444. Up to 563 conditions per place. [2024-06-27 21:50:47,601 INFO L140 encePairwiseOnDemand]: 38/44 looper letters, 58 selfloop transitions, 22 changer transitions 0/96 dead transitions. [2024-06-27 21:50:47,602 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 92 places, 96 transitions, 736 flow [2024-06-27 21:50:47,602 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-27 21:50:47,602 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-27 21:50:47,602 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 177 transitions. [2024-06-27 21:50:47,603 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6704545454545454 [2024-06-27 21:50:47,603 INFO L175 Difference]: Start difference. First operand has 87 places, 69 transitions, 490 flow. Second operand 6 states and 177 transitions. [2024-06-27 21:50:47,603 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 92 places, 96 transitions, 736 flow [2024-06-27 21:50:47,611 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 89 places, 96 transitions, 687 flow, removed 6 selfloop flow, removed 3 redundant places. [2024-06-27 21:50:47,612 INFO L231 Difference]: Finished difference. Result has 90 places, 70 transitions, 501 flow [2024-06-27 21:50:47,612 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=445, PETRI_DIFFERENCE_MINUEND_PLACES=84, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=69, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=21, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=48, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=501, PETRI_PLACES=90, PETRI_TRANSITIONS=70} [2024-06-27 21:50:47,612 INFO L281 CegarLoopForPetriNet]: 48 programPoint places, 42 predicate places. [2024-06-27 21:50:47,613 INFO L495 AbstractCegarLoop]: Abstraction has has 90 places, 70 transitions, 501 flow [2024-06-27 21:50:47,613 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 22.0) internal successors, (154), 7 states have internal predecessors, (154), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 21:50:47,613 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 21:50:47,613 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 21:50:47,613 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2024-06-27 21:50:47,613 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 21:50:47,614 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 21:50:47,614 INFO L85 PathProgramCache]: Analyzing trace with hash 432233732, now seen corresponding path program 3 times [2024-06-27 21:50:47,614 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 21:50:47,614 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1972874483] [2024-06-27 21:50:47,614 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 21:50:47,614 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 21:50:47,619 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 21:50:47,693 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 21:50:47,694 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 21:50:47,694 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1972874483] [2024-06-27 21:50:47,694 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1972874483] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 21:50:47,694 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 21:50:47,694 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-27 21:50:47,694 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [849085280] [2024-06-27 21:50:47,694 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 21:50:47,695 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-27 21:50:47,695 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 21:50:47,695 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-27 21:50:47,695 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2024-06-27 21:50:47,715 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 20 out of 44 [2024-06-27 21:50:47,715 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 90 places, 70 transitions, 501 flow. Second operand has 7 states, 7 states have (on average 22.0) internal successors, (154), 7 states have internal predecessors, (154), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 21:50:47,715 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 21:50:47,715 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 20 of 44 [2024-06-27 21:50:47,715 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 21:50:47,858 INFO L124 PetriNetUnfolderBase]: 747/1524 cut-off events. [2024-06-27 21:50:47,858 INFO L125 PetriNetUnfolderBase]: For 4008/4011 co-relation queries the response was YES. [2024-06-27 21:50:47,861 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4650 conditions, 1524 events. 747/1524 cut-off events. For 4008/4011 co-relation queries the response was YES. Maximal size of possible extension queue 130. Compared 10334 event pairs, 99 based on Foata normal form. 4/1492 useless extension candidates. Maximal degree in co-relation 4612. Up to 579 conditions per place. [2024-06-27 21:50:47,869 INFO L140 encePairwiseOnDemand]: 38/44 looper letters, 54 selfloop transitions, 24 changer transitions 0/94 dead transitions. [2024-06-27 21:50:47,870 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 95 places, 94 transitions, 735 flow [2024-06-27 21:50:47,870 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-27 21:50:47,870 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-27 21:50:47,871 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 175 transitions. [2024-06-27 21:50:47,871 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6628787878787878 [2024-06-27 21:50:47,871 INFO L175 Difference]: Start difference. First operand has 90 places, 70 transitions, 501 flow. Second operand 6 states and 175 transitions. [2024-06-27 21:50:47,871 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 95 places, 94 transitions, 735 flow [2024-06-27 21:50:47,878 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 92 places, 94 transitions, 691 flow, removed 3 selfloop flow, removed 3 redundant places. [2024-06-27 21:50:47,879 INFO L231 Difference]: Finished difference. Result has 93 places, 71 transitions, 519 flow [2024-06-27 21:50:47,880 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=458, PETRI_DIFFERENCE_MINUEND_PLACES=87, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=70, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=23, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=47, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=519, PETRI_PLACES=93, PETRI_TRANSITIONS=71} [2024-06-27 21:50:47,880 INFO L281 CegarLoopForPetriNet]: 48 programPoint places, 45 predicate places. [2024-06-27 21:50:47,880 INFO L495 AbstractCegarLoop]: Abstraction has has 93 places, 71 transitions, 519 flow [2024-06-27 21:50:47,880 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 22.0) internal successors, (154), 7 states have internal predecessors, (154), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 21:50:47,880 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 21:50:47,880 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 21:50:47,881 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2024-06-27 21:50:47,881 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 21:50:47,881 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 21:50:47,881 INFO L85 PathProgramCache]: Analyzing trace with hash 987543009, now seen corresponding path program 1 times [2024-06-27 21:50:47,881 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 21:50:47,881 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1509547636] [2024-06-27 21:50:47,881 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 21:50:47,881 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 21:50:47,886 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 21:50:47,964 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 21:50:47,964 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 21:50:47,965 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1509547636] [2024-06-27 21:50:47,965 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1509547636] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 21:50:47,965 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 21:50:47,965 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-27 21:50:47,965 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [317950218] [2024-06-27 21:50:47,965 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 21:50:47,965 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-27 21:50:47,965 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 21:50:47,966 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-27 21:50:47,966 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2024-06-27 21:50:48,003 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 20 out of 44 [2024-06-27 21:50:48,003 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 93 places, 71 transitions, 519 flow. Second operand has 7 states, 7 states have (on average 22.0) internal successors, (154), 7 states have internal predecessors, (154), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 21:50:48,003 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 21:50:48,003 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 20 of 44 [2024-06-27 21:50:48,003 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 21:50:48,179 INFO L124 PetriNetUnfolderBase]: 811/1674 cut-off events. [2024-06-27 21:50:48,179 INFO L125 PetriNetUnfolderBase]: For 5022/5028 co-relation queries the response was YES. [2024-06-27 21:50:48,183 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5093 conditions, 1674 events. 811/1674 cut-off events. For 5022/5028 co-relation queries the response was YES. Maximal size of possible extension queue 142. Compared 11554 event pairs, 155 based on Foata normal form. 8/1662 useless extension candidates. Maximal degree in co-relation 5054. Up to 851 conditions per place. [2024-06-27 21:50:48,188 INFO L140 encePairwiseOnDemand]: 37/44 looper letters, 67 selfloop transitions, 27 changer transitions 0/110 dead transitions. [2024-06-27 21:50:48,188 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 100 places, 110 transitions, 835 flow [2024-06-27 21:50:48,188 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 21:50:48,188 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 21:50:48,189 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 234 transitions. [2024-06-27 21:50:48,189 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6647727272727273 [2024-06-27 21:50:48,189 INFO L175 Difference]: Start difference. First operand has 93 places, 71 transitions, 519 flow. Second operand 8 states and 234 transitions. [2024-06-27 21:50:48,189 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 100 places, 110 transitions, 835 flow [2024-06-27 21:50:48,197 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 97 places, 110 transitions, 797 flow, removed 3 selfloop flow, removed 3 redundant places. [2024-06-27 21:50:48,198 INFO L231 Difference]: Finished difference. Result has 99 places, 75 transitions, 581 flow [2024-06-27 21:50:48,198 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=481, PETRI_DIFFERENCE_MINUEND_PLACES=90, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=71, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=24, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=46, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=581, PETRI_PLACES=99, PETRI_TRANSITIONS=75} [2024-06-27 21:50:48,198 INFO L281 CegarLoopForPetriNet]: 48 programPoint places, 51 predicate places. [2024-06-27 21:50:48,198 INFO L495 AbstractCegarLoop]: Abstraction has has 99 places, 75 transitions, 581 flow [2024-06-27 21:50:48,199 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 22.0) internal successors, (154), 7 states have internal predecessors, (154), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 21:50:48,199 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 21:50:48,199 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 21:50:48,199 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2024-06-27 21:50:48,199 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 21:50:48,199 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 21:50:48,199 INFO L85 PathProgramCache]: Analyzing trace with hash -1372654358, now seen corresponding path program 4 times [2024-06-27 21:50:48,199 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 21:50:48,199 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1292929458] [2024-06-27 21:50:48,199 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 21:50:48,200 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 21:50:48,205 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 21:50:48,285 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 21:50:48,285 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 21:50:48,285 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1292929458] [2024-06-27 21:50:48,285 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1292929458] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 21:50:48,285 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 21:50:48,285 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-27 21:50:48,285 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1580991041] [2024-06-27 21:50:48,285 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 21:50:48,285 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-27 21:50:48,286 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 21:50:48,286 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-27 21:50:48,286 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2024-06-27 21:50:48,309 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 20 out of 44 [2024-06-27 21:50:48,309 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 99 places, 75 transitions, 581 flow. Second operand has 7 states, 7 states have (on average 22.0) internal successors, (154), 7 states have internal predecessors, (154), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 21:50:48,310 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 21:50:48,310 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 20 of 44 [2024-06-27 21:50:48,310 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 21:50:48,450 INFO L124 PetriNetUnfolderBase]: 803/1636 cut-off events. [2024-06-27 21:50:48,450 INFO L125 PetriNetUnfolderBase]: For 4864/4867 co-relation queries the response was YES. [2024-06-27 21:50:48,454 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5123 conditions, 1636 events. 803/1636 cut-off events. For 4864/4867 co-relation queries the response was YES. Maximal size of possible extension queue 142. Compared 11288 event pairs, 87 based on Foata normal form. 4/1604 useless extension candidates. Maximal degree in co-relation 5082. Up to 843 conditions per place. [2024-06-27 21:50:48,458 INFO L140 encePairwiseOnDemand]: 38/44 looper letters, 59 selfloop transitions, 20 changer transitions 0/95 dead transitions. [2024-06-27 21:50:48,458 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 103 places, 95 transitions, 783 flow [2024-06-27 21:50:48,458 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-06-27 21:50:48,458 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-06-27 21:50:48,459 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 151 transitions. [2024-06-27 21:50:48,459 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6863636363636364 [2024-06-27 21:50:48,459 INFO L175 Difference]: Start difference. First operand has 99 places, 75 transitions, 581 flow. Second operand 5 states and 151 transitions. [2024-06-27 21:50:48,459 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 103 places, 95 transitions, 783 flow [2024-06-27 21:50:48,469 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 98 places, 95 transitions, 717 flow, removed 14 selfloop flow, removed 5 redundant places. [2024-06-27 21:50:48,471 INFO L231 Difference]: Finished difference. Result has 99 places, 75 transitions, 561 flow [2024-06-27 21:50:48,471 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=515, PETRI_DIFFERENCE_MINUEND_PLACES=94, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=75, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=20, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=55, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=561, PETRI_PLACES=99, PETRI_TRANSITIONS=75} [2024-06-27 21:50:48,471 INFO L281 CegarLoopForPetriNet]: 48 programPoint places, 51 predicate places. [2024-06-27 21:50:48,471 INFO L495 AbstractCegarLoop]: Abstraction has has 99 places, 75 transitions, 561 flow [2024-06-27 21:50:48,471 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 22.0) internal successors, (154), 7 states have internal predecessors, (154), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 21:50:48,471 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 21:50:48,471 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 21:50:48,472 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2024-06-27 21:50:48,472 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 21:50:48,472 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 21:50:48,472 INFO L85 PathProgramCache]: Analyzing trace with hash 1159490709, now seen corresponding path program 2 times [2024-06-27 21:50:48,472 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 21:50:48,472 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1854724009] [2024-06-27 21:50:48,472 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 21:50:48,472 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 21:50:48,477 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 21:50:48,556 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 21:50:48,557 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 21:50:48,557 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1854724009] [2024-06-27 21:50:48,557 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1854724009] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 21:50:48,557 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 21:50:48,557 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-27 21:50:48,557 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1586492367] [2024-06-27 21:50:48,557 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 21:50:48,557 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-27 21:50:48,557 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 21:50:48,558 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-27 21:50:48,558 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2024-06-27 21:50:48,575 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 20 out of 44 [2024-06-27 21:50:48,576 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 99 places, 75 transitions, 561 flow. Second operand has 7 states, 7 states have (on average 22.0) internal successors, (154), 7 states have internal predecessors, (154), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 21:50:48,576 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 21:50:48,576 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 20 of 44 [2024-06-27 21:50:48,576 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 21:50:48,785 INFO L124 PetriNetUnfolderBase]: 1004/2057 cut-off events. [2024-06-27 21:50:48,785 INFO L125 PetriNetUnfolderBase]: For 7906/7909 co-relation queries the response was YES. [2024-06-27 21:50:48,789 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6205 conditions, 2057 events. 1004/2057 cut-off events. For 7906/7909 co-relation queries the response was YES. Maximal size of possible extension queue 183. Compared 14780 event pairs, 236 based on Foata normal form. 12/2038 useless extension candidates. Maximal degree in co-relation 6164. Up to 878 conditions per place. [2024-06-27 21:50:48,795 INFO L140 encePairwiseOnDemand]: 37/44 looper letters, 71 selfloop transitions, 27 changer transitions 0/114 dead transitions. [2024-06-27 21:50:48,795 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 105 places, 114 transitions, 922 flow [2024-06-27 21:50:48,795 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-27 21:50:48,795 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-27 21:50:48,796 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 210 transitions. [2024-06-27 21:50:48,796 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6818181818181818 [2024-06-27 21:50:48,796 INFO L175 Difference]: Start difference. First operand has 99 places, 75 transitions, 561 flow. Second operand 7 states and 210 transitions. [2024-06-27 21:50:48,796 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 105 places, 114 transitions, 922 flow [2024-06-27 21:50:48,806 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 99 places, 114 transitions, 849 flow, removed 2 selfloop flow, removed 6 redundant places. [2024-06-27 21:50:48,807 INFO L231 Difference]: Finished difference. Result has 101 places, 81 transitions, 647 flow [2024-06-27 21:50:48,807 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=501, PETRI_DIFFERENCE_MINUEND_PLACES=93, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=75, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=22, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=49, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=647, PETRI_PLACES=101, PETRI_TRANSITIONS=81} [2024-06-27 21:50:48,808 INFO L281 CegarLoopForPetriNet]: 48 programPoint places, 53 predicate places. [2024-06-27 21:50:48,808 INFO L495 AbstractCegarLoop]: Abstraction has has 101 places, 81 transitions, 647 flow [2024-06-27 21:50:48,808 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 22.0) internal successors, (154), 7 states have internal predecessors, (154), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 21:50:48,808 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 21:50:48,808 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 21:50:48,808 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2024-06-27 21:50:48,808 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 21:50:48,809 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 21:50:48,809 INFO L85 PathProgramCache]: Analyzing trace with hash 1172689269, now seen corresponding path program 3 times [2024-06-27 21:50:48,809 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 21:50:48,809 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2131328258] [2024-06-27 21:50:48,809 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 21:50:48,809 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 21:50:48,813 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 21:50:48,888 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 21:50:48,888 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 21:50:48,888 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2131328258] [2024-06-27 21:50:48,888 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2131328258] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 21:50:48,888 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 21:50:48,889 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-27 21:50:48,889 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [404168017] [2024-06-27 21:50:48,889 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 21:50:48,889 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-27 21:50:48,889 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 21:50:48,889 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-27 21:50:48,889 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2024-06-27 21:50:48,911 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 20 out of 44 [2024-06-27 21:50:48,911 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 101 places, 81 transitions, 647 flow. Second operand has 7 states, 7 states have (on average 22.0) internal successors, (154), 7 states have internal predecessors, (154), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 21:50:48,912 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 21:50:48,912 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 20 of 44 [2024-06-27 21:50:48,912 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 21:50:49,116 INFO L124 PetriNetUnfolderBase]: 984/2057 cut-off events. [2024-06-27 21:50:49,116 INFO L125 PetriNetUnfolderBase]: For 6938/6941 co-relation queries the response was YES. [2024-06-27 21:50:49,120 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6208 conditions, 2057 events. 984/2057 cut-off events. For 6938/6941 co-relation queries the response was YES. Maximal size of possible extension queue 176. Compared 14880 event pairs, 262 based on Foata normal form. 12/2044 useless extension candidates. Maximal degree in co-relation 6166. Up to 874 conditions per place. [2024-06-27 21:50:49,125 INFO L140 encePairwiseOnDemand]: 37/44 looper letters, 65 selfloop transitions, 27 changer transitions 0/108 dead transitions. [2024-06-27 21:50:49,125 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 106 places, 108 transitions, 889 flow [2024-06-27 21:50:49,126 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-27 21:50:49,126 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-27 21:50:49,126 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 182 transitions. [2024-06-27 21:50:49,126 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6893939393939394 [2024-06-27 21:50:49,126 INFO L175 Difference]: Start difference. First operand has 101 places, 81 transitions, 647 flow. Second operand 6 states and 182 transitions. [2024-06-27 21:50:49,127 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 106 places, 108 transitions, 889 flow [2024-06-27 21:50:49,135 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 102 places, 108 transitions, 844 flow, removed 4 selfloop flow, removed 4 redundant places. [2024-06-27 21:50:49,137 INFO L231 Difference]: Finished difference. Result has 103 places, 81 transitions, 663 flow [2024-06-27 21:50:49,137 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=602, PETRI_DIFFERENCE_MINUEND_PLACES=97, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=81, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=27, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=54, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=663, PETRI_PLACES=103, PETRI_TRANSITIONS=81} [2024-06-27 21:50:49,137 INFO L281 CegarLoopForPetriNet]: 48 programPoint places, 55 predicate places. [2024-06-27 21:50:49,137 INFO L495 AbstractCegarLoop]: Abstraction has has 103 places, 81 transitions, 663 flow [2024-06-27 21:50:49,137 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 22.0) internal successors, (154), 7 states have internal predecessors, (154), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 21:50:49,137 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 21:50:49,137 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 21:50:49,138 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2024-06-27 21:50:49,138 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 21:50:49,138 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 21:50:49,138 INFO L85 PathProgramCache]: Analyzing trace with hash 1828342105, now seen corresponding path program 4 times [2024-06-27 21:50:49,138 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 21:50:49,138 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [301467136] [2024-06-27 21:50:49,138 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 21:50:49,138 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 21:50:49,143 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 21:50:49,206 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 21:50:49,206 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 21:50:49,206 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [301467136] [2024-06-27 21:50:49,207 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [301467136] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 21:50:49,207 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 21:50:49,207 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-27 21:50:49,207 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [433971515] [2024-06-27 21:50:49,207 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 21:50:49,207 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-27 21:50:49,207 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 21:50:49,208 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-27 21:50:49,208 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2024-06-27 21:50:49,235 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 20 out of 44 [2024-06-27 21:50:49,235 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 103 places, 81 transitions, 663 flow. Second operand has 7 states, 7 states have (on average 22.0) internal successors, (154), 7 states have internal predecessors, (154), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 21:50:49,235 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 21:50:49,235 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 20 of 44 [2024-06-27 21:50:49,235 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 21:50:49,441 INFO L124 PetriNetUnfolderBase]: 1012/2053 cut-off events. [2024-06-27 21:50:49,441 INFO L125 PetriNetUnfolderBase]: For 5375/5381 co-relation queries the response was YES. [2024-06-27 21:50:49,446 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6485 conditions, 2053 events. 1012/2053 cut-off events. For 5375/5381 co-relation queries the response was YES. Maximal size of possible extension queue 187. Compared 15001 event pairs, 266 based on Foata normal form. 8/1992 useless extension candidates. Maximal degree in co-relation 6442. Up to 943 conditions per place. [2024-06-27 21:50:49,452 INFO L140 encePairwiseOnDemand]: 37/44 looper letters, 72 selfloop transitions, 29 changer transitions 0/117 dead transitions. [2024-06-27 21:50:49,452 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 109 places, 117 transitions, 981 flow [2024-06-27 21:50:49,452 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-27 21:50:49,452 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-27 21:50:49,453 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 207 transitions. [2024-06-27 21:50:49,453 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.672077922077922 [2024-06-27 21:50:49,453 INFO L175 Difference]: Start difference. First operand has 103 places, 81 transitions, 663 flow. Second operand 7 states and 207 transitions. [2024-06-27 21:50:49,453 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 109 places, 117 transitions, 981 flow [2024-06-27 21:50:49,467 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 103 places, 117 transitions, 921 flow, removed 2 selfloop flow, removed 6 redundant places. [2024-06-27 21:50:49,468 INFO L231 Difference]: Finished difference. Result has 105 places, 84 transitions, 701 flow [2024-06-27 21:50:49,469 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=605, PETRI_DIFFERENCE_MINUEND_PLACES=97, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=81, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=26, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=54, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=701, PETRI_PLACES=105, PETRI_TRANSITIONS=84} [2024-06-27 21:50:49,469 INFO L281 CegarLoopForPetriNet]: 48 programPoint places, 57 predicate places. [2024-06-27 21:50:49,469 INFO L495 AbstractCegarLoop]: Abstraction has has 105 places, 84 transitions, 701 flow [2024-06-27 21:50:49,469 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 22.0) internal successors, (154), 7 states have internal predecessors, (154), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 21:50:49,469 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 21:50:49,470 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 21:50:49,470 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2024-06-27 21:50:49,470 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 21:50:49,470 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 21:50:49,470 INFO L85 PathProgramCache]: Analyzing trace with hash -1797678047, now seen corresponding path program 5 times [2024-06-27 21:50:49,471 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 21:50:49,471 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [710480592] [2024-06-27 21:50:49,471 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 21:50:49,471 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 21:50:49,478 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 21:50:49,567 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 21:50:49,567 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 21:50:49,567 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [710480592] [2024-06-27 21:50:49,567 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [710480592] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 21:50:49,567 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 21:50:49,567 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-27 21:50:49,568 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [249804308] [2024-06-27 21:50:49,568 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 21:50:49,569 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-27 21:50:49,569 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 21:50:49,569 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-27 21:50:49,569 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2024-06-27 21:50:49,584 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 20 out of 44 [2024-06-27 21:50:49,584 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 105 places, 84 transitions, 701 flow. Second operand has 7 states, 7 states have (on average 22.0) internal successors, (154), 7 states have internal predecessors, (154), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 21:50:49,584 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 21:50:49,584 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 20 of 44 [2024-06-27 21:50:49,585 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 21:50:49,820 INFO L124 PetriNetUnfolderBase]: 1004/2087 cut-off events. [2024-06-27 21:50:49,820 INFO L125 PetriNetUnfolderBase]: For 5440/5443 co-relation queries the response was YES. [2024-06-27 21:50:49,824 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6552 conditions, 2087 events. 1004/2087 cut-off events. For 5440/5443 co-relation queries the response was YES. Maximal size of possible extension queue 185. Compared 15456 event pairs, 137 based on Foata normal form. 4/2032 useless extension candidates. Maximal degree in co-relation 6508. Up to 1211 conditions per place. [2024-06-27 21:50:49,828 INFO L140 encePairwiseOnDemand]: 37/44 looper letters, 71 selfloop transitions, 24 changer transitions 0/111 dead transitions. [2024-06-27 21:50:49,828 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 110 places, 111 transitions, 951 flow [2024-06-27 21:50:49,829 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-27 21:50:49,829 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-27 21:50:49,830 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 181 transitions. [2024-06-27 21:50:49,830 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6856060606060606 [2024-06-27 21:50:49,831 INFO L175 Difference]: Start difference. First operand has 105 places, 84 transitions, 701 flow. Second operand 6 states and 181 transitions. [2024-06-27 21:50:49,831 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 110 places, 111 transitions, 951 flow [2024-06-27 21:50:49,841 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 107 places, 111 transitions, 915 flow, removed 5 selfloop flow, removed 3 redundant places. [2024-06-27 21:50:49,844 INFO L231 Difference]: Finished difference. Result has 108 places, 84 transitions, 717 flow [2024-06-27 21:50:49,844 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=665, PETRI_DIFFERENCE_MINUEND_PLACES=102, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=84, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=24, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=60, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=717, PETRI_PLACES=108, PETRI_TRANSITIONS=84} [2024-06-27 21:50:49,844 INFO L281 CegarLoopForPetriNet]: 48 programPoint places, 60 predicate places. [2024-06-27 21:50:49,844 INFO L495 AbstractCegarLoop]: Abstraction has has 108 places, 84 transitions, 717 flow [2024-06-27 21:50:49,845 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 22.0) internal successors, (154), 7 states have internal predecessors, (154), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 21:50:49,845 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 21:50:49,845 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 21:50:49,845 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2024-06-27 21:50:49,845 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 21:50:49,845 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 21:50:49,845 INFO L85 PathProgramCache]: Analyzing trace with hash 642300053, now seen corresponding path program 6 times [2024-06-27 21:50:49,846 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 21:50:49,846 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1122084707] [2024-06-27 21:50:49,846 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 21:50:49,846 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 21:50:49,850 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 21:50:49,912 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 21:50:49,912 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 21:50:49,912 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1122084707] [2024-06-27 21:50:49,912 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1122084707] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 21:50:49,913 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 21:50:49,913 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-27 21:50:49,913 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [382250038] [2024-06-27 21:50:49,913 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 21:50:49,913 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-27 21:50:49,914 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 21:50:49,914 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-27 21:50:49,914 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2024-06-27 21:50:49,931 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 20 out of 44 [2024-06-27 21:50:49,931 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 108 places, 84 transitions, 717 flow. Second operand has 7 states, 7 states have (on average 22.0) internal successors, (154), 7 states have internal predecessors, (154), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 21:50:49,931 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 21:50:49,932 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 20 of 44 [2024-06-27 21:50:49,932 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 21:50:50,135 INFO L124 PetriNetUnfolderBase]: 1120/2363 cut-off events. [2024-06-27 21:50:50,135 INFO L125 PetriNetUnfolderBase]: For 7926/7929 co-relation queries the response was YES. [2024-06-27 21:50:50,141 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7242 conditions, 2363 events. 1120/2363 cut-off events. For 7926/7929 co-relation queries the response was YES. Maximal size of possible extension queue 214. Compared 18080 event pairs, 162 based on Foata normal form. 4/2317 useless extension candidates. Maximal degree in co-relation 7196. Up to 709 conditions per place. [2024-06-27 21:50:50,148 INFO L140 encePairwiseOnDemand]: 37/44 looper letters, 75 selfloop transitions, 34 changer transitions 0/125 dead transitions. [2024-06-27 21:50:50,148 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 115 places, 125 transitions, 1087 flow [2024-06-27 21:50:50,149 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 21:50:50,149 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 21:50:50,149 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 236 transitions. [2024-06-27 21:50:50,149 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6704545454545454 [2024-06-27 21:50:50,150 INFO L175 Difference]: Start difference. First operand has 108 places, 84 transitions, 717 flow. Second operand 8 states and 236 transitions. [2024-06-27 21:50:50,150 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 115 places, 125 transitions, 1087 flow [2024-06-27 21:50:50,163 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 110 places, 125 transitions, 1007 flow, removed 6 selfloop flow, removed 5 redundant places. [2024-06-27 21:50:50,164 INFO L231 Difference]: Finished difference. Result has 111 places, 86 transitions, 727 flow [2024-06-27 21:50:50,165 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=637, PETRI_DIFFERENCE_MINUEND_PLACES=103, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=84, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=32, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=52, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=727, PETRI_PLACES=111, PETRI_TRANSITIONS=86} [2024-06-27 21:50:50,165 INFO L281 CegarLoopForPetriNet]: 48 programPoint places, 63 predicate places. [2024-06-27 21:50:50,166 INFO L495 AbstractCegarLoop]: Abstraction has has 111 places, 86 transitions, 727 flow [2024-06-27 21:50:50,166 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 22.0) internal successors, (154), 7 states have internal predecessors, (154), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 21:50:50,166 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 21:50:50,166 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 21:50:50,166 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2024-06-27 21:50:50,166 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 21:50:50,167 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 21:50:50,167 INFO L85 PathProgramCache]: Analyzing trace with hash -1797292097, now seen corresponding path program 7 times [2024-06-27 21:50:50,167 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 21:50:50,167 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [45551099] [2024-06-27 21:50:50,167 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 21:50:50,167 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 21:50:50,172 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 21:50:50,239 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 21:50:50,239 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 21:50:50,240 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [45551099] [2024-06-27 21:50:50,240 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [45551099] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 21:50:50,240 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 21:50:50,240 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-27 21:50:50,240 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1738772656] [2024-06-27 21:50:50,240 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 21:50:50,241 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-27 21:50:50,241 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 21:50:50,241 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-27 21:50:50,241 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2024-06-27 21:50:50,266 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 20 out of 44 [2024-06-27 21:50:50,266 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 111 places, 86 transitions, 727 flow. Second operand has 7 states, 7 states have (on average 22.0) internal successors, (154), 7 states have internal predecessors, (154), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 21:50:50,267 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 21:50:50,267 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 20 of 44 [2024-06-27 21:50:50,267 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 21:50:50,454 INFO L124 PetriNetUnfolderBase]: 1112/2339 cut-off events. [2024-06-27 21:50:50,454 INFO L125 PetriNetUnfolderBase]: For 8299/8302 co-relation queries the response was YES. [2024-06-27 21:50:50,461 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7023 conditions, 2339 events. 1112/2339 cut-off events. For 8299/8302 co-relation queries the response was YES. Maximal size of possible extension queue 202. Compared 17550 event pairs, 302 based on Foata normal form. 4/2291 useless extension candidates. Maximal degree in co-relation 6978. Up to 705 conditions per place. [2024-06-27 21:50:50,468 INFO L140 encePairwiseOnDemand]: 37/44 looper letters, 68 selfloop transitions, 31 changer transitions 0/115 dead transitions. [2024-06-27 21:50:50,468 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 116 places, 115 transitions, 1015 flow [2024-06-27 21:50:50,469 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-27 21:50:50,469 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-27 21:50:50,469 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 181 transitions. [2024-06-27 21:50:50,469 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6856060606060606 [2024-06-27 21:50:50,469 INFO L175 Difference]: Start difference. First operand has 111 places, 86 transitions, 727 flow. Second operand 6 states and 181 transitions. [2024-06-27 21:50:50,470 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 116 places, 115 transitions, 1015 flow [2024-06-27 21:50:50,484 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 112 places, 115 transitions, 952 flow, removed 6 selfloop flow, removed 4 redundant places. [2024-06-27 21:50:50,485 INFO L231 Difference]: Finished difference. Result has 113 places, 86 transitions, 730 flow [2024-06-27 21:50:50,486 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=664, PETRI_DIFFERENCE_MINUEND_PLACES=107, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=86, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=31, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=55, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=730, PETRI_PLACES=113, PETRI_TRANSITIONS=86} [2024-06-27 21:50:50,486 INFO L281 CegarLoopForPetriNet]: 48 programPoint places, 65 predicate places. [2024-06-27 21:50:50,486 INFO L495 AbstractCegarLoop]: Abstraction has has 113 places, 86 transitions, 730 flow [2024-06-27 21:50:50,486 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 22.0) internal successors, (154), 7 states have internal predecessors, (154), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 21:50:50,486 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 21:50:50,487 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 21:50:50,487 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2024-06-27 21:50:50,487 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 21:50:50,487 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 21:50:50,487 INFO L85 PathProgramCache]: Analyzing trace with hash 642092663, now seen corresponding path program 8 times [2024-06-27 21:50:50,487 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 21:50:50,487 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1775916799] [2024-06-27 21:50:50,488 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 21:50:50,488 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 21:50:50,492 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 21:50:50,555 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 21:50:50,555 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 21:50:50,555 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1775916799] [2024-06-27 21:50:50,555 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1775916799] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 21:50:50,555 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 21:50:50,555 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-27 21:50:50,556 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [881445254] [2024-06-27 21:50:50,556 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 21:50:50,556 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-27 21:50:50,556 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 21:50:50,557 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-27 21:50:50,557 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2024-06-27 21:50:50,578 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 20 out of 44 [2024-06-27 21:50:50,578 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 113 places, 86 transitions, 730 flow. Second operand has 7 states, 7 states have (on average 22.0) internal successors, (154), 7 states have internal predecessors, (154), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 21:50:50,578 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 21:50:50,578 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 20 of 44 [2024-06-27 21:50:50,578 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 21:50:50,794 INFO L124 PetriNetUnfolderBase]: 1092/2235 cut-off events. [2024-06-27 21:50:50,794 INFO L125 PetriNetUnfolderBase]: For 7345/7348 co-relation queries the response was YES. [2024-06-27 21:50:50,800 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6728 conditions, 2235 events. 1092/2235 cut-off events. For 7345/7348 co-relation queries the response was YES. Maximal size of possible extension queue 205. Compared 16705 event pairs, 94 based on Foata normal form. 12/2215 useless extension candidates. Maximal degree in co-relation 6682. Up to 701 conditions per place. [2024-06-27 21:50:50,806 INFO L140 encePairwiseOnDemand]: 37/44 looper letters, 76 selfloop transitions, 36 changer transitions 0/128 dead transitions. [2024-06-27 21:50:50,807 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 121 places, 128 transitions, 1042 flow [2024-06-27 21:50:50,807 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 21:50:50,807 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 21:50:50,808 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 260 transitions. [2024-06-27 21:50:50,808 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6565656565656566 [2024-06-27 21:50:50,808 INFO L175 Difference]: Start difference. First operand has 113 places, 86 transitions, 730 flow. Second operand 9 states and 260 transitions. [2024-06-27 21:50:50,808 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 121 places, 128 transitions, 1042 flow [2024-06-27 21:50:50,824 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 116 places, 128 transitions, 971 flow, removed 2 selfloop flow, removed 5 redundant places. [2024-06-27 21:50:50,825 INFO L231 Difference]: Finished difference. Result has 117 places, 86 transitions, 736 flow [2024-06-27 21:50:50,826 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=659, PETRI_DIFFERENCE_MINUEND_PLACES=108, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=86, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=36, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=50, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=736, PETRI_PLACES=117, PETRI_TRANSITIONS=86} [2024-06-27 21:50:50,826 INFO L281 CegarLoopForPetriNet]: 48 programPoint places, 69 predicate places. [2024-06-27 21:50:50,826 INFO L495 AbstractCegarLoop]: Abstraction has has 117 places, 86 transitions, 736 flow [2024-06-27 21:50:50,826 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 22.0) internal successors, (154), 7 states have internal predecessors, (154), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 21:50:50,826 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 21:50:50,826 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 21:50:50,826 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2024-06-27 21:50:50,826 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 21:50:50,827 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 21:50:50,827 INFO L85 PathProgramCache]: Analyzing trace with hash 448689131, now seen corresponding path program 1 times [2024-06-27 21:50:50,827 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 21:50:50,827 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [734536941] [2024-06-27 21:50:50,827 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 21:50:50,827 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 21:50:50,856 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 21:50:50,904 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 21:50:50,904 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 21:50:50,904 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [734536941] [2024-06-27 21:50:50,905 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [734536941] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 21:50:50,905 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 21:50:50,905 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-06-27 21:50:50,905 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1360083176] [2024-06-27 21:50:50,905 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 21:50:50,905 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-06-27 21:50:50,905 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 21:50:50,906 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-06-27 21:50:50,906 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-06-27 21:50:50,913 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 24 out of 44 [2024-06-27 21:50:50,913 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 117 places, 86 transitions, 736 flow. Second operand has 4 states, 4 states have (on average 27.0) internal successors, (108), 4 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 21:50:50,914 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 21:50:50,914 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 24 of 44 [2024-06-27 21:50:50,914 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 21:50:51,184 INFO L124 PetriNetUnfolderBase]: 1663/3564 cut-off events. [2024-06-27 21:50:51,184 INFO L125 PetriNetUnfolderBase]: For 674/706 co-relation queries the response was YES. [2024-06-27 21:50:51,194 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6703 conditions, 3564 events. 1663/3564 cut-off events. For 674/706 co-relation queries the response was YES. Maximal size of possible extension queue 324. Compared 29617 event pairs, 294 based on Foata normal form. 179/3575 useless extension candidates. Maximal degree in co-relation 6656. Up to 1447 conditions per place. [2024-06-27 21:50:51,202 INFO L140 encePairwiseOnDemand]: 38/44 looper letters, 30 selfloop transitions, 5 changer transitions 0/103 dead transitions. [2024-06-27 21:50:51,202 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 120 places, 103 transitions, 844 flow [2024-06-27 21:50:51,203 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-06-27 21:50:51,203 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-06-27 21:50:51,203 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 133 transitions. [2024-06-27 21:50:51,203 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.7556818181818182 [2024-06-27 21:50:51,203 INFO L175 Difference]: Start difference. First operand has 117 places, 86 transitions, 736 flow. Second operand 4 states and 133 transitions. [2024-06-27 21:50:51,203 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 120 places, 103 transitions, 844 flow [2024-06-27 21:50:51,207 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 112 places, 103 transitions, 765 flow, removed 1 selfloop flow, removed 8 redundant places. [2024-06-27 21:50:51,208 INFO L231 Difference]: Finished difference. Result has 114 places, 90 transitions, 695 flow [2024-06-27 21:50:51,208 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=657, PETRI_DIFFERENCE_MINUEND_PLACES=109, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=86, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=81, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=695, PETRI_PLACES=114, PETRI_TRANSITIONS=90} [2024-06-27 21:50:51,209 INFO L281 CegarLoopForPetriNet]: 48 programPoint places, 66 predicate places. [2024-06-27 21:50:51,209 INFO L495 AbstractCegarLoop]: Abstraction has has 114 places, 90 transitions, 695 flow [2024-06-27 21:50:51,209 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 27.0) internal successors, (108), 4 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 21:50:51,209 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 21:50:51,209 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 21:50:51,209 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2024-06-27 21:50:51,209 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 21:50:51,209 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 21:50:51,209 INFO L85 PathProgramCache]: Analyzing trace with hash 952664113, now seen corresponding path program 1 times [2024-06-27 21:50:51,210 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 21:50:51,210 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1403361100] [2024-06-27 21:50:51,210 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 21:50:51,210 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 21:50:51,216 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 21:50:51,306 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 21:50:51,306 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 21:50:51,307 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1403361100] [2024-06-27 21:50:51,307 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1403361100] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 21:50:51,307 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 21:50:51,307 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-27 21:50:51,307 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1409611174] [2024-06-27 21:50:51,307 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 21:50:51,307 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-27 21:50:51,308 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 21:50:51,308 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-27 21:50:51,308 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2024-06-27 21:50:51,337 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 20 out of 44 [2024-06-27 21:50:51,337 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 114 places, 90 transitions, 695 flow. Second operand has 8 states, 8 states have (on average 21.875) internal successors, (175), 8 states have internal predecessors, (175), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 21:50:51,337 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 21:50:51,337 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 20 of 44 [2024-06-27 21:50:51,338 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 21:50:51,717 INFO L124 PetriNetUnfolderBase]: 2122/4492 cut-off events. [2024-06-27 21:50:51,717 INFO L125 PetriNetUnfolderBase]: For 9063/9153 co-relation queries the response was YES. [2024-06-27 21:50:51,733 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12031 conditions, 4492 events. 2122/4492 cut-off events. For 9063/9153 co-relation queries the response was YES. Maximal size of possible extension queue 413. Compared 38835 event pairs, 653 based on Foata normal form. 27/4178 useless extension candidates. Maximal degree in co-relation 11982. Up to 1617 conditions per place. [2024-06-27 21:50:51,745 INFO L140 encePairwiseOnDemand]: 37/44 looper letters, 74 selfloop transitions, 31 changer transitions 0/125 dead transitions. [2024-06-27 21:50:51,745 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 120 places, 125 transitions, 1017 flow [2024-06-27 21:50:51,745 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-27 21:50:51,745 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-27 21:50:51,745 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 209 transitions. [2024-06-27 21:50:51,746 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6785714285714286 [2024-06-27 21:50:51,746 INFO L175 Difference]: Start difference. First operand has 114 places, 90 transitions, 695 flow. Second operand 7 states and 209 transitions. [2024-06-27 21:50:51,746 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 120 places, 125 transitions, 1017 flow [2024-06-27 21:50:51,765 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 119 places, 125 transitions, 1015 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-06-27 21:50:51,766 INFO L231 Difference]: Finished difference. Result has 121 places, 93 transitions, 800 flow [2024-06-27 21:50:51,766 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=693, PETRI_DIFFERENCE_MINUEND_PLACES=113, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=90, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=28, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=59, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=800, PETRI_PLACES=121, PETRI_TRANSITIONS=93} [2024-06-27 21:50:51,766 INFO L281 CegarLoopForPetriNet]: 48 programPoint places, 73 predicate places. [2024-06-27 21:50:51,766 INFO L495 AbstractCegarLoop]: Abstraction has has 121 places, 93 transitions, 800 flow [2024-06-27 21:50:51,767 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 21.875) internal successors, (175), 8 states have internal predecessors, (175), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 21:50:51,767 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 21:50:51,767 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 21:50:51,767 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2024-06-27 21:50:51,767 INFO L420 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 21:50:51,768 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 21:50:51,768 INFO L85 PathProgramCache]: Analyzing trace with hash 550548019, now seen corresponding path program 2 times [2024-06-27 21:50:51,768 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 21:50:51,768 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [437729489] [2024-06-27 21:50:51,768 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 21:50:51,768 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 21:50:51,773 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 21:50:51,845 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 21:50:51,845 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 21:50:51,845 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [437729489] [2024-06-27 21:50:51,845 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [437729489] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 21:50:51,845 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 21:50:51,845 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-27 21:50:51,845 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1159293331] [2024-06-27 21:50:51,845 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 21:50:51,846 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-27 21:50:51,846 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 21:50:51,846 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-27 21:50:51,846 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2024-06-27 21:50:51,882 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 20 out of 44 [2024-06-27 21:50:51,882 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 121 places, 93 transitions, 800 flow. Second operand has 8 states, 8 states have (on average 21.875) internal successors, (175), 8 states have internal predecessors, (175), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 21:50:51,882 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 21:50:51,882 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 20 of 44 [2024-06-27 21:50:51,882 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 21:50:52,294 INFO L124 PetriNetUnfolderBase]: 2423/5043 cut-off events. [2024-06-27 21:50:52,294 INFO L125 PetriNetUnfolderBase]: For 14032/14143 co-relation queries the response was YES. [2024-06-27 21:50:52,315 INFO L83 FinitePrefix]: Finished finitePrefix Result has 14105 conditions, 5043 events. 2423/5043 cut-off events. For 14032/14143 co-relation queries the response was YES. Maximal size of possible extension queue 477. Compared 44337 event pairs, 650 based on Foata normal form. 27/4657 useless extension candidates. Maximal degree in co-relation 14053. Up to 1177 conditions per place. [2024-06-27 21:50:52,329 INFO L140 encePairwiseOnDemand]: 37/44 looper letters, 82 selfloop transitions, 40 changer transitions 0/142 dead transitions. [2024-06-27 21:50:52,329 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 130 places, 142 transitions, 1212 flow [2024-06-27 21:50:52,330 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 21:50:52,330 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 21:50:52,330 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 284 transitions. [2024-06-27 21:50:52,330 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6454545454545455 [2024-06-27 21:50:52,330 INFO L175 Difference]: Start difference. First operand has 121 places, 93 transitions, 800 flow. Second operand 10 states and 284 transitions. [2024-06-27 21:50:52,330 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 130 places, 142 transitions, 1212 flow [2024-06-27 21:50:52,357 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 125 places, 142 transitions, 1151 flow, removed 1 selfloop flow, removed 5 redundant places. [2024-06-27 21:50:52,358 INFO L231 Difference]: Finished difference. Result has 126 places, 93 transitions, 822 flow [2024-06-27 21:50:52,358 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=739, PETRI_DIFFERENCE_MINUEND_PLACES=116, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=93, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=40, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=53, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=822, PETRI_PLACES=126, PETRI_TRANSITIONS=93} [2024-06-27 21:50:52,359 INFO L281 CegarLoopForPetriNet]: 48 programPoint places, 78 predicate places. [2024-06-27 21:50:52,359 INFO L495 AbstractCegarLoop]: Abstraction has has 126 places, 93 transitions, 822 flow [2024-06-27 21:50:52,359 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 21.875) internal successors, (175), 8 states have internal predecessors, (175), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 21:50:52,359 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 21:50:52,359 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 21:50:52,359 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2024-06-27 21:50:52,359 INFO L420 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 21:50:52,360 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 21:50:52,360 INFO L85 PathProgramCache]: Analyzing trace with hash 514354779, now seen corresponding path program 3 times [2024-06-27 21:50:52,360 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 21:50:52,360 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [947738017] [2024-06-27 21:50:52,360 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 21:50:52,360 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 21:50:52,366 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 21:50:52,440 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 21:50:52,440 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 21:50:52,440 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [947738017] [2024-06-27 21:50:52,440 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [947738017] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 21:50:52,440 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 21:50:52,440 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-27 21:50:52,440 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1478704411] [2024-06-27 21:50:52,440 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 21:50:52,441 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-27 21:50:52,442 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 21:50:52,442 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-27 21:50:52,442 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2024-06-27 21:50:52,464 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 20 out of 44 [2024-06-27 21:50:52,465 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 126 places, 93 transitions, 822 flow. Second operand has 8 states, 8 states have (on average 21.875) internal successors, (175), 8 states have internal predecessors, (175), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 21:50:52,465 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 21:50:52,465 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 20 of 44 [2024-06-27 21:50:52,465 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 21:50:52,984 INFO L124 PetriNetUnfolderBase]: 2712/5744 cut-off events. [2024-06-27 21:50:52,985 INFO L125 PetriNetUnfolderBase]: For 18455/18584 co-relation queries the response was YES. [2024-06-27 21:50:53,002 INFO L83 FinitePrefix]: Finished finitePrefix Result has 15954 conditions, 5744 events. 2712/5744 cut-off events. For 18455/18584 co-relation queries the response was YES. Maximal size of possible extension queue 549. Compared 52724 event pairs, 657 based on Foata normal form. 31/5285 useless extension candidates. Maximal degree in co-relation 15901. Up to 1394 conditions per place. [2024-06-27 21:50:53,015 INFO L140 encePairwiseOnDemand]: 37/44 looper letters, 80 selfloop transitions, 35 changer transitions 0/135 dead transitions. [2024-06-27 21:50:53,016 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 134 places, 135 transitions, 1238 flow [2024-06-27 21:50:53,016 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 21:50:53,016 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 21:50:53,017 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 259 transitions. [2024-06-27 21:50:53,017 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6540404040404041 [2024-06-27 21:50:53,017 INFO L175 Difference]: Start difference. First operand has 126 places, 93 transitions, 822 flow. Second operand 9 states and 259 transitions. [2024-06-27 21:50:53,017 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 134 places, 135 transitions, 1238 flow [2024-06-27 21:50:53,046 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 127 places, 135 transitions, 1166 flow, removed 0 selfloop flow, removed 7 redundant places. [2024-06-27 21:50:53,048 INFO L231 Difference]: Finished difference. Result has 128 places, 93 transitions, 824 flow [2024-06-27 21:50:53,049 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=750, PETRI_DIFFERENCE_MINUEND_PLACES=119, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=93, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=35, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=58, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=824, PETRI_PLACES=128, PETRI_TRANSITIONS=93} [2024-06-27 21:50:53,049 INFO L281 CegarLoopForPetriNet]: 48 programPoint places, 80 predicate places. [2024-06-27 21:50:53,049 INFO L495 AbstractCegarLoop]: Abstraction has has 128 places, 93 transitions, 824 flow [2024-06-27 21:50:53,049 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 21.875) internal successors, (175), 8 states have internal predecessors, (175), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 21:50:53,049 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 21:50:53,050 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 21:50:53,050 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2024-06-27 21:50:53,050 INFO L420 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 21:50:53,050 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 21:50:53,051 INFO L85 PathProgramCache]: Analyzing trace with hash 514344549, now seen corresponding path program 4 times [2024-06-27 21:50:53,051 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 21:50:53,051 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [120070973] [2024-06-27 21:50:53,051 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 21:50:53,053 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 21:50:53,058 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 21:50:53,209 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 21:50:53,209 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 21:50:53,209 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [120070973] [2024-06-27 21:50:53,209 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [120070973] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 21:50:53,209 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 21:50:53,209 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-27 21:50:53,210 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [89000035] [2024-06-27 21:50:53,210 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 21:50:53,210 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-27 21:50:53,210 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 21:50:53,210 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-27 21:50:53,211 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2024-06-27 21:50:53,232 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 20 out of 44 [2024-06-27 21:50:53,232 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 128 places, 93 transitions, 824 flow. Second operand has 8 states, 8 states have (on average 21.875) internal successors, (175), 8 states have internal predecessors, (175), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 21:50:53,232 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 21:50:53,232 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 20 of 44 [2024-06-27 21:50:53,232 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 21:50:53,828 INFO L124 PetriNetUnfolderBase]: 2707/5838 cut-off events. [2024-06-27 21:50:53,828 INFO L125 PetriNetUnfolderBase]: For 17059/17180 co-relation queries the response was YES. [2024-06-27 21:50:53,845 INFO L83 FinitePrefix]: Finished finitePrefix Result has 15991 conditions, 5838 events. 2707/5838 cut-off events. For 17059/17180 co-relation queries the response was YES. Maximal size of possible extension queue 543. Compared 54067 event pairs, 711 based on Foata normal form. 30/5383 useless extension candidates. Maximal degree in co-relation 15937. Up to 1369 conditions per place. [2024-06-27 21:50:53,857 INFO L140 encePairwiseOnDemand]: 37/44 looper letters, 88 selfloop transitions, 37 changer transitions 0/145 dead transitions. [2024-06-27 21:50:53,857 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 138 places, 145 transitions, 1254 flow [2024-06-27 21:50:53,857 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 21:50:53,857 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 21:50:53,857 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 310 transitions. [2024-06-27 21:50:53,858 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.640495867768595 [2024-06-27 21:50:53,858 INFO L175 Difference]: Start difference. First operand has 128 places, 93 transitions, 824 flow. Second operand 11 states and 310 transitions. [2024-06-27 21:50:53,858 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 138 places, 145 transitions, 1254 flow [2024-06-27 21:50:53,889 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 131 places, 145 transitions, 1186 flow, removed 0 selfloop flow, removed 7 redundant places. [2024-06-27 21:50:53,890 INFO L231 Difference]: Finished difference. Result has 132 places, 93 transitions, 833 flow [2024-06-27 21:50:53,891 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=756, PETRI_DIFFERENCE_MINUEND_PLACES=121, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=93, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=37, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=56, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=833, PETRI_PLACES=132, PETRI_TRANSITIONS=93} [2024-06-27 21:50:53,891 INFO L281 CegarLoopForPetriNet]: 48 programPoint places, 84 predicate places. [2024-06-27 21:50:53,891 INFO L495 AbstractCegarLoop]: Abstraction has has 132 places, 93 transitions, 833 flow [2024-06-27 21:50:53,891 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 21.875) internal successors, (175), 8 states have internal predecessors, (175), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 21:50:53,891 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 21:50:53,891 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 21:50:53,891 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2024-06-27 21:50:53,891 INFO L420 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 21:50:53,892 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 21:50:53,892 INFO L85 PathProgramCache]: Analyzing trace with hash 1578034695, now seen corresponding path program 5 times [2024-06-27 21:50:53,892 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 21:50:53,892 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1410048909] [2024-06-27 21:50:53,892 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 21:50:53,892 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 21:50:53,896 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 21:50:53,967 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 21:50:53,967 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 21:50:53,967 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1410048909] [2024-06-27 21:50:53,967 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1410048909] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 21:50:53,967 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 21:50:53,967 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-27 21:50:53,967 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [486089841] [2024-06-27 21:50:53,967 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 21:50:53,968 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-27 21:50:53,968 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 21:50:53,968 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-27 21:50:53,968 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2024-06-27 21:50:54,000 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 20 out of 44 [2024-06-27 21:50:54,000 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 132 places, 93 transitions, 833 flow. Second operand has 8 states, 8 states have (on average 21.875) internal successors, (175), 8 states have internal predecessors, (175), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 21:50:54,000 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 21:50:54,000 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 20 of 44 [2024-06-27 21:50:54,000 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 21:50:54,693 INFO L124 PetriNetUnfolderBase]: 3133/6627 cut-off events. [2024-06-27 21:50:54,693 INFO L125 PetriNetUnfolderBase]: For 21070/21205 co-relation queries the response was YES. [2024-06-27 21:50:54,712 INFO L83 FinitePrefix]: Finished finitePrefix Result has 18237 conditions, 6627 events. 3133/6627 cut-off events. For 21070/21205 co-relation queries the response was YES. Maximal size of possible extension queue 634. Compared 62106 event pairs, 1162 based on Foata normal form. 34/5997 useless extension candidates. Maximal degree in co-relation 18182. Up to 2768 conditions per place. [2024-06-27 21:50:54,725 INFO L140 encePairwiseOnDemand]: 37/44 looper letters, 86 selfloop transitions, 26 changer transitions 0/132 dead transitions. [2024-06-27 21:50:54,725 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 138 places, 132 transitions, 1213 flow [2024-06-27 21:50:54,726 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-27 21:50:54,726 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-27 21:50:54,726 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 212 transitions. [2024-06-27 21:50:54,726 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6883116883116883 [2024-06-27 21:50:54,726 INFO L175 Difference]: Start difference. First operand has 132 places, 93 transitions, 833 flow. Second operand 7 states and 212 transitions. [2024-06-27 21:50:54,726 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 138 places, 132 transitions, 1213 flow [2024-06-27 21:50:54,771 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 130 places, 132 transitions, 1138 flow, removed 0 selfloop flow, removed 8 redundant places. [2024-06-27 21:50:54,772 INFO L231 Difference]: Finished difference. Result has 132 places, 95 transitions, 839 flow [2024-06-27 21:50:54,773 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=762, PETRI_DIFFERENCE_MINUEND_PLACES=124, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=93, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=24, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=67, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=839, PETRI_PLACES=132, PETRI_TRANSITIONS=95} [2024-06-27 21:50:54,773 INFO L281 CegarLoopForPetriNet]: 48 programPoint places, 84 predicate places. [2024-06-27 21:50:54,773 INFO L495 AbstractCegarLoop]: Abstraction has has 132 places, 95 transitions, 839 flow [2024-06-27 21:50:54,774 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 21.875) internal successors, (175), 8 states have internal predecessors, (175), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 21:50:54,774 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 21:50:54,774 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 21:50:54,774 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2024-06-27 21:50:54,774 INFO L420 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 21:50:54,774 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 21:50:54,774 INFO L85 PathProgramCache]: Analyzing trace with hash 1584474015, now seen corresponding path program 6 times [2024-06-27 21:50:54,774 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 21:50:54,774 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1921814508] [2024-06-27 21:50:54,774 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 21:50:54,774 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 21:50:54,778 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 21:50:54,848 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 21:50:54,848 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 21:50:54,848 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1921814508] [2024-06-27 21:50:54,848 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1921814508] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 21:50:54,849 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 21:50:54,849 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-27 21:50:54,849 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1930995919] [2024-06-27 21:50:54,849 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 21:50:54,849 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-27 21:50:54,849 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 21:50:54,849 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-27 21:50:54,849 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2024-06-27 21:50:54,869 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 20 out of 44 [2024-06-27 21:50:54,870 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 132 places, 95 transitions, 839 flow. Second operand has 8 states, 8 states have (on average 21.875) internal successors, (175), 8 states have internal predecessors, (175), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 21:50:54,870 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 21:50:54,870 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 20 of 44 [2024-06-27 21:50:54,870 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 21:50:55,549 INFO L124 PetriNetUnfolderBase]: 3278/6984 cut-off events. [2024-06-27 21:50:55,549 INFO L125 PetriNetUnfolderBase]: For 23617/23753 co-relation queries the response was YES. [2024-06-27 21:50:55,574 INFO L83 FinitePrefix]: Finished finitePrefix Result has 18915 conditions, 6984 events. 3278/6984 cut-off events. For 23617/23753 co-relation queries the response was YES. Maximal size of possible extension queue 678. Compared 66248 event pairs, 1528 based on Foata normal form. 36/6283 useless extension candidates. Maximal degree in co-relation 18858. Up to 2764 conditions per place. [2024-06-27 21:50:55,592 INFO L140 encePairwiseOnDemand]: 37/44 looper letters, 88 selfloop transitions, 26 changer transitions 0/134 dead transitions. [2024-06-27 21:50:55,592 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 139 places, 134 transitions, 1215 flow [2024-06-27 21:50:55,593 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 21:50:55,593 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 21:50:55,593 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 236 transitions. [2024-06-27 21:50:55,593 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6704545454545454 [2024-06-27 21:50:55,593 INFO L175 Difference]: Start difference. First operand has 132 places, 95 transitions, 839 flow. Second operand 8 states and 236 transitions. [2024-06-27 21:50:55,593 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 139 places, 134 transitions, 1215 flow [2024-06-27 21:50:55,636 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 135 places, 134 transitions, 1170 flow, removed 0 selfloop flow, removed 4 redundant places. [2024-06-27 21:50:55,638 INFO L231 Difference]: Finished difference. Result has 136 places, 95 transitions, 849 flow [2024-06-27 21:50:55,638 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=794, PETRI_DIFFERENCE_MINUEND_PLACES=128, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=95, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=26, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=69, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=849, PETRI_PLACES=136, PETRI_TRANSITIONS=95} [2024-06-27 21:50:55,638 INFO L281 CegarLoopForPetriNet]: 48 programPoint places, 88 predicate places. [2024-06-27 21:50:55,638 INFO L495 AbstractCegarLoop]: Abstraction has has 136 places, 95 transitions, 849 flow [2024-06-27 21:50:55,639 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 21.875) internal successors, (175), 8 states have internal predecessors, (175), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 21:50:55,639 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 21:50:55,639 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 21:50:55,639 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2024-06-27 21:50:55,639 INFO L420 AbstractCegarLoop]: === Iteration 31 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 21:50:55,639 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 21:50:55,639 INFO L85 PathProgramCache]: Analyzing trace with hash 1578044925, now seen corresponding path program 7 times [2024-06-27 21:50:55,639 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 21:50:55,639 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1566130810] [2024-06-27 21:50:55,640 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 21:50:55,640 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 21:50:55,644 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 21:50:55,729 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 21:50:55,729 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 21:50:55,729 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1566130810] [2024-06-27 21:50:55,729 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1566130810] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 21:50:55,729 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 21:50:55,729 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-27 21:50:55,729 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1908521871] [2024-06-27 21:50:55,729 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 21:50:55,730 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-27 21:50:55,730 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 21:50:55,731 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-27 21:50:55,731 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2024-06-27 21:50:55,759 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 20 out of 44 [2024-06-27 21:50:55,759 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 136 places, 95 transitions, 849 flow. Second operand has 8 states, 8 states have (on average 21.875) internal successors, (175), 8 states have internal predecessors, (175), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 21:50:55,759 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 21:50:55,759 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 20 of 44 [2024-06-27 21:50:55,759 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 21:50:56,382 INFO L124 PetriNetUnfolderBase]: 3269/6890 cut-off events. [2024-06-27 21:50:56,382 INFO L125 PetriNetUnfolderBase]: For 20746/20877 co-relation queries the response was YES. [2024-06-27 21:50:56,410 INFO L83 FinitePrefix]: Finished finitePrefix Result has 18630 conditions, 6890 events. 3269/6890 cut-off events. For 20746/20877 co-relation queries the response was YES. Maximal size of possible extension queue 668. Compared 64933 event pairs, 1111 based on Foata normal form. 36/6236 useless extension candidates. Maximal degree in co-relation 18572. Up to 2777 conditions per place. [2024-06-27 21:50:56,427 INFO L140 encePairwiseOnDemand]: 37/44 looper letters, 82 selfloop transitions, 26 changer transitions 0/128 dead transitions. [2024-06-27 21:50:56,427 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 142 places, 128 transitions, 1155 flow [2024-06-27 21:50:56,427 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-27 21:50:56,427 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-27 21:50:56,428 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 208 transitions. [2024-06-27 21:50:56,428 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6753246753246753 [2024-06-27 21:50:56,428 INFO L175 Difference]: Start difference. First operand has 136 places, 95 transitions, 849 flow. Second operand 7 states and 208 transitions. [2024-06-27 21:50:56,428 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 142 places, 128 transitions, 1155 flow [2024-06-27 21:50:56,475 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 137 places, 128 transitions, 1119 flow, removed 0 selfloop flow, removed 5 redundant places. [2024-06-27 21:50:56,476 INFO L231 Difference]: Finished difference. Result has 138 places, 95 transitions, 868 flow [2024-06-27 21:50:56,476 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=813, PETRI_DIFFERENCE_MINUEND_PLACES=131, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=95, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=26, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=69, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=868, PETRI_PLACES=138, PETRI_TRANSITIONS=95} [2024-06-27 21:50:56,477 INFO L281 CegarLoopForPetriNet]: 48 programPoint places, 90 predicate places. [2024-06-27 21:50:56,477 INFO L495 AbstractCegarLoop]: Abstraction has has 138 places, 95 transitions, 868 flow [2024-06-27 21:50:56,477 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 21.875) internal successors, (175), 8 states have internal predecessors, (175), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 21:50:56,477 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 21:50:56,477 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 21:50:56,477 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30 [2024-06-27 21:50:56,477 INFO L420 AbstractCegarLoop]: === Iteration 32 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 21:50:56,478 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 21:50:56,478 INFO L85 PathProgramCache]: Analyzing trace with hash -1797863051, now seen corresponding path program 8 times [2024-06-27 21:50:56,478 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 21:50:56,478 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [403900264] [2024-06-27 21:50:56,478 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 21:50:56,478 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 21:50:56,482 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 21:50:56,546 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 21:50:56,546 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 21:50:56,547 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [403900264] [2024-06-27 21:50:56,547 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [403900264] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 21:50:56,547 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 21:50:56,547 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-27 21:50:56,547 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1883236109] [2024-06-27 21:50:56,547 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 21:50:56,547 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-27 21:50:56,547 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 21:50:56,548 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-27 21:50:56,548 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2024-06-27 21:50:56,573 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 20 out of 44 [2024-06-27 21:50:56,573 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 138 places, 95 transitions, 868 flow. Second operand has 7 states, 7 states have (on average 22.142857142857142) internal successors, (155), 7 states have internal predecessors, (155), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 21:50:56,573 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 21:50:56,573 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 20 of 44 [2024-06-27 21:50:56,573 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 21:50:57,223 INFO L124 PetriNetUnfolderBase]: 3398/7181 cut-off events. [2024-06-27 21:50:57,223 INFO L125 PetriNetUnfolderBase]: For 22840/22978 co-relation queries the response was YES. [2024-06-27 21:50:57,253 INFO L83 FinitePrefix]: Finished finitePrefix Result has 19311 conditions, 7181 events. 3398/7181 cut-off events. For 22840/22978 co-relation queries the response was YES. Maximal size of possible extension queue 706. Compared 68159 event pairs, 1531 based on Foata normal form. 37/6437 useless extension candidates. Maximal degree in co-relation 19252. Up to 2915 conditions per place. [2024-06-27 21:50:57,272 INFO L140 encePairwiseOnDemand]: 38/44 looper letters, 80 selfloop transitions, 25 changer transitions 0/125 dead transitions. [2024-06-27 21:50:57,272 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 144 places, 125 transitions, 1160 flow [2024-06-27 21:50:57,272 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-27 21:50:57,273 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-27 21:50:57,273 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 201 transitions. [2024-06-27 21:50:57,273 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6525974025974026 [2024-06-27 21:50:57,273 INFO L175 Difference]: Start difference. First operand has 138 places, 95 transitions, 868 flow. Second operand 7 states and 201 transitions. [2024-06-27 21:50:57,273 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 144 places, 125 transitions, 1160 flow [2024-06-27 21:50:57,323 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 139 places, 125 transitions, 1109 flow, removed 0 selfloop flow, removed 5 redundant places. [2024-06-27 21:50:57,324 INFO L231 Difference]: Finished difference. Result has 140 places, 95 transitions, 870 flow [2024-06-27 21:50:57,325 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=817, PETRI_DIFFERENCE_MINUEND_PLACES=133, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=95, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=25, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=70, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=870, PETRI_PLACES=140, PETRI_TRANSITIONS=95} [2024-06-27 21:50:57,325 INFO L281 CegarLoopForPetriNet]: 48 programPoint places, 92 predicate places. [2024-06-27 21:50:57,325 INFO L495 AbstractCegarLoop]: Abstraction has has 140 places, 95 transitions, 870 flow [2024-06-27 21:50:57,325 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 22.142857142857142) internal successors, (155), 7 states have internal predecessors, (155), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 21:50:57,325 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 21:50:57,325 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 21:50:57,325 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31 [2024-06-27 21:50:57,326 INFO L420 AbstractCegarLoop]: === Iteration 33 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 21:50:57,326 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 21:50:57,326 INFO L85 PathProgramCache]: Analyzing trace with hash 106555795, now seen corresponding path program 9 times [2024-06-27 21:50:57,326 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 21:50:57,326 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1396622778] [2024-06-27 21:50:57,326 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 21:50:57,326 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 21:50:57,330 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 21:50:57,401 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 21:50:57,401 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 21:50:57,401 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1396622778] [2024-06-27 21:50:57,401 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1396622778] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 21:50:57,401 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 21:50:57,401 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-27 21:50:57,401 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2041370413] [2024-06-27 21:50:57,402 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 21:50:57,402 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-27 21:50:57,402 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 21:50:57,402 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-27 21:50:57,402 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2024-06-27 21:50:57,454 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 20 out of 44 [2024-06-27 21:50:57,454 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 140 places, 95 transitions, 870 flow. Second operand has 8 states, 8 states have (on average 21.875) internal successors, (175), 8 states have internal predecessors, (175), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 21:50:57,455 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 21:50:57,455 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 20 of 44 [2024-06-27 21:50:57,455 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 21:50:58,172 INFO L124 PetriNetUnfolderBase]: 3560/7494 cut-off events. [2024-06-27 21:50:58,172 INFO L125 PetriNetUnfolderBase]: For 23354/23499 co-relation queries the response was YES. [2024-06-27 21:50:58,196 INFO L83 FinitePrefix]: Finished finitePrefix Result has 20064 conditions, 7494 events. 3560/7494 cut-off events. For 23354/23499 co-relation queries the response was YES. Maximal size of possible extension queue 746. Compared 71969 event pairs, 1350 based on Foata normal form. 37/6722 useless extension candidates. Maximal degree in co-relation 20005. Up to 3776 conditions per place. [2024-06-27 21:50:58,211 INFO L140 encePairwiseOnDemand]: 37/44 looper letters, 84 selfloop transitions, 24 changer transitions 0/128 dead transitions. [2024-06-27 21:50:58,211 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 146 places, 128 transitions, 1224 flow [2024-06-27 21:50:58,211 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-27 21:50:58,211 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-27 21:50:58,212 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 206 transitions. [2024-06-27 21:50:58,212 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6688311688311688 [2024-06-27 21:50:58,212 INFO L175 Difference]: Start difference. First operand has 140 places, 95 transitions, 870 flow. Second operand 7 states and 206 transitions. [2024-06-27 21:50:58,212 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 146 places, 128 transitions, 1224 flow [2024-06-27 21:50:58,261 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 141 places, 128 transitions, 1175 flow, removed 0 selfloop flow, removed 5 redundant places. [2024-06-27 21:50:58,263 INFO L231 Difference]: Finished difference. Result has 142 places, 95 transitions, 872 flow [2024-06-27 21:50:58,263 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=821, PETRI_DIFFERENCE_MINUEND_PLACES=135, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=95, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=24, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=71, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=872, PETRI_PLACES=142, PETRI_TRANSITIONS=95} [2024-06-27 21:50:58,263 INFO L281 CegarLoopForPetriNet]: 48 programPoint places, 94 predicate places. [2024-06-27 21:50:58,263 INFO L495 AbstractCegarLoop]: Abstraction has has 142 places, 95 transitions, 872 flow [2024-06-27 21:50:58,263 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 21.875) internal successors, (175), 8 states have internal predecessors, (175), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 21:50:58,263 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 21:50:58,264 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 21:50:58,264 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32 [2024-06-27 21:50:58,264 INFO L420 AbstractCegarLoop]: === Iteration 34 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 21:50:58,264 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 21:50:58,264 INFO L85 PathProgramCache]: Analyzing trace with hash 780767911, now seen corresponding path program 10 times [2024-06-27 21:50:58,264 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 21:50:58,264 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [557311204] [2024-06-27 21:50:58,264 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 21:50:58,264 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 21:50:58,268 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 21:50:58,332 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 21:50:58,332 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 21:50:58,332 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [557311204] [2024-06-27 21:50:58,332 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [557311204] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 21:50:58,332 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 21:50:58,333 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-27 21:50:58,333 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1205780511] [2024-06-27 21:50:58,333 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 21:50:58,333 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-27 21:50:58,333 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 21:50:58,333 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-27 21:50:58,334 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2024-06-27 21:50:58,358 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 20 out of 44 [2024-06-27 21:50:58,359 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 142 places, 95 transitions, 872 flow. Second operand has 8 states, 8 states have (on average 21.875) internal successors, (175), 8 states have internal predecessors, (175), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 21:50:58,359 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 21:50:58,359 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 20 of 44 [2024-06-27 21:50:58,359 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 21:50:58,971 INFO L124 PetriNetUnfolderBase]: 3547/7494 cut-off events. [2024-06-27 21:50:58,971 INFO L125 PetriNetUnfolderBase]: For 20058/20190 co-relation queries the response was YES. [2024-06-27 21:50:59,003 INFO L83 FinitePrefix]: Finished finitePrefix Result has 19665 conditions, 7494 events. 3547/7494 cut-off events. For 20058/20190 co-relation queries the response was YES. Maximal size of possible extension queue 744. Compared 72032 event pairs, 1340 based on Foata normal form. 37/6738 useless extension candidates. Maximal degree in co-relation 19604. Up to 3774 conditions per place. [2024-06-27 21:50:59,021 INFO L140 encePairwiseOnDemand]: 37/44 looper letters, 93 selfloop transitions, 26 changer transitions 0/139 dead transitions. [2024-06-27 21:50:59,022 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 150 places, 139 transitions, 1232 flow [2024-06-27 21:50:59,022 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 21:50:59,022 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 21:50:59,022 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 259 transitions. [2024-06-27 21:50:59,023 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6540404040404041 [2024-06-27 21:50:59,023 INFO L175 Difference]: Start difference. First operand has 142 places, 95 transitions, 872 flow. Second operand 9 states and 259 transitions. [2024-06-27 21:50:59,023 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 150 places, 139 transitions, 1232 flow [2024-06-27 21:50:59,076 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 145 places, 139 transitions, 1180 flow, removed 2 selfloop flow, removed 5 redundant places. [2024-06-27 21:50:59,077 INFO L231 Difference]: Finished difference. Result has 146 places, 95 transitions, 875 flow [2024-06-27 21:50:59,077 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=820, PETRI_DIFFERENCE_MINUEND_PLACES=137, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=95, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=26, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=69, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=875, PETRI_PLACES=146, PETRI_TRANSITIONS=95} [2024-06-27 21:50:59,078 INFO L281 CegarLoopForPetriNet]: 48 programPoint places, 98 predicate places. [2024-06-27 21:50:59,078 INFO L495 AbstractCegarLoop]: Abstraction has has 146 places, 95 transitions, 875 flow [2024-06-27 21:50:59,078 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 21.875) internal successors, (175), 8 states have internal predecessors, (175), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 21:50:59,078 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 21:50:59,078 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 21:50:59,078 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33 [2024-06-27 21:50:59,078 INFO L420 AbstractCegarLoop]: === Iteration 35 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 21:50:59,078 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 21:50:59,078 INFO L85 PathProgramCache]: Analyzing trace with hash 118520245, now seen corresponding path program 11 times [2024-06-27 21:50:59,078 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 21:50:59,079 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [962515791] [2024-06-27 21:50:59,079 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 21:50:59,079 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 21:50:59,082 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 21:50:59,140 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 21:50:59,140 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 21:50:59,140 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [962515791] [2024-06-27 21:50:59,140 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [962515791] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 21:50:59,141 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 21:50:59,141 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-27 21:50:59,141 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2117975889] [2024-06-27 21:50:59,141 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 21:50:59,141 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-27 21:50:59,141 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 21:50:59,141 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-27 21:50:59,141 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2024-06-27 21:50:59,168 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 20 out of 44 [2024-06-27 21:50:59,169 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 146 places, 95 transitions, 875 flow. Second operand has 8 states, 8 states have (on average 21.875) internal successors, (175), 8 states have internal predecessors, (175), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 21:50:59,169 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 21:50:59,169 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 20 of 44 [2024-06-27 21:50:59,169 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 21:50:59,848 INFO L124 PetriNetUnfolderBase]: 3658/7985 cut-off events. [2024-06-27 21:50:59,848 INFO L125 PetriNetUnfolderBase]: For 21153/21297 co-relation queries the response was YES. [2024-06-27 21:50:59,873 INFO L83 FinitePrefix]: Finished finitePrefix Result has 20420 conditions, 7985 events. 3658/7985 cut-off events. For 21153/21297 co-relation queries the response was YES. Maximal size of possible extension queue 782. Compared 78945 event pairs, 1486 based on Foata normal form. 38/7190 useless extension candidates. Maximal degree in co-relation 20359. Up to 1977 conditions per place. [2024-06-27 21:50:59,889 INFO L140 encePairwiseOnDemand]: 37/44 looper letters, 80 selfloop transitions, 26 changer transitions 0/126 dead transitions. [2024-06-27 21:50:59,889 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 152 places, 126 transitions, 1171 flow [2024-06-27 21:50:59,890 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-27 21:50:59,890 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-27 21:50:59,891 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 202 transitions. [2024-06-27 21:50:59,891 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6558441558441559 [2024-06-27 21:50:59,891 INFO L175 Difference]: Start difference. First operand has 146 places, 95 transitions, 875 flow. Second operand 7 states and 202 transitions. [2024-06-27 21:50:59,891 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 152 places, 126 transitions, 1171 flow [2024-06-27 21:50:59,937 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 146 places, 126 transitions, 1120 flow, removed 0 selfloop flow, removed 6 redundant places. [2024-06-27 21:50:59,938 INFO L231 Difference]: Finished difference. Result has 147 places, 95 transitions, 879 flow [2024-06-27 21:50:59,938 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=824, PETRI_DIFFERENCE_MINUEND_PLACES=140, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=95, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=26, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=69, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=879, PETRI_PLACES=147, PETRI_TRANSITIONS=95} [2024-06-27 21:50:59,939 INFO L281 CegarLoopForPetriNet]: 48 programPoint places, 99 predicate places. [2024-06-27 21:50:59,939 INFO L495 AbstractCegarLoop]: Abstraction has has 147 places, 95 transitions, 879 flow [2024-06-27 21:50:59,939 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 21.875) internal successors, (175), 8 states have internal predecessors, (175), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 21:50:59,939 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 21:50:59,939 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 21:50:59,939 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable34 [2024-06-27 21:50:59,939 INFO L420 AbstractCegarLoop]: === Iteration 36 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 21:50:59,939 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 21:50:59,940 INFO L85 PathProgramCache]: Analyzing trace with hash -1563534433, now seen corresponding path program 12 times [2024-06-27 21:50:59,940 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 21:50:59,940 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1158747958] [2024-06-27 21:50:59,940 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 21:50:59,940 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 21:50:59,944 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 21:51:00,013 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 21:51:00,014 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 21:51:00,014 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1158747958] [2024-06-27 21:51:00,014 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1158747958] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 21:51:00,014 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 21:51:00,014 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-27 21:51:00,014 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [337013897] [2024-06-27 21:51:00,015 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 21:51:00,015 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-27 21:51:00,015 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 21:51:00,016 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-27 21:51:00,016 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2024-06-27 21:51:00,045 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 20 out of 44 [2024-06-27 21:51:00,045 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 147 places, 95 transitions, 879 flow. Second operand has 8 states, 8 states have (on average 21.875) internal successors, (175), 8 states have internal predecessors, (175), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 21:51:00,045 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 21:51:00,046 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 20 of 44 [2024-06-27 21:51:00,046 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 21:51:00,671 INFO L124 PetriNetUnfolderBase]: 3769/8134 cut-off events. [2024-06-27 21:51:00,672 INFO L125 PetriNetUnfolderBase]: For 22349/22498 co-relation queries the response was YES. [2024-06-27 21:51:00,703 INFO L83 FinitePrefix]: Finished finitePrefix Result has 20972 conditions, 8134 events. 3769/8134 cut-off events. For 22349/22498 co-relation queries the response was YES. Maximal size of possible extension queue 818. Compared 80300 event pairs, 1551 based on Foata normal form. 38/7288 useless extension candidates. Maximal degree in co-relation 20910. Up to 2020 conditions per place. [2024-06-27 21:51:00,722 INFO L140 encePairwiseOnDemand]: 37/44 looper letters, 86 selfloop transitions, 29 changer transitions 0/135 dead transitions. [2024-06-27 21:51:00,722 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 155 places, 135 transitions, 1219 flow [2024-06-27 21:51:00,722 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 21:51:00,723 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 21:51:00,723 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 256 transitions. [2024-06-27 21:51:00,723 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6464646464646465 [2024-06-27 21:51:00,723 INFO L175 Difference]: Start difference. First operand has 147 places, 95 transitions, 879 flow. Second operand 9 states and 256 transitions. [2024-06-27 21:51:00,723 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 155 places, 135 transitions, 1219 flow [2024-06-27 21:51:00,772 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 150 places, 135 transitions, 1168 flow, removed 0 selfloop flow, removed 5 redundant places. [2024-06-27 21:51:00,773 INFO L231 Difference]: Finished difference. Result has 151 places, 95 transitions, 889 flow [2024-06-27 21:51:00,774 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=828, PETRI_DIFFERENCE_MINUEND_PLACES=142, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=95, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=29, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=66, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=889, PETRI_PLACES=151, PETRI_TRANSITIONS=95} [2024-06-27 21:51:00,774 INFO L281 CegarLoopForPetriNet]: 48 programPoint places, 103 predicate places. [2024-06-27 21:51:00,774 INFO L495 AbstractCegarLoop]: Abstraction has has 151 places, 95 transitions, 889 flow [2024-06-27 21:51:00,774 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 21.875) internal successors, (175), 8 states have internal predecessors, (175), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 21:51:00,774 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 21:51:00,774 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 21:51:00,775 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable35 [2024-06-27 21:51:00,775 INFO L420 AbstractCegarLoop]: === Iteration 37 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 21:51:00,775 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 21:51:00,775 INFO L85 PathProgramCache]: Analyzing trace with hash -1740665953, now seen corresponding path program 13 times [2024-06-27 21:51:00,775 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 21:51:00,775 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1933745060] [2024-06-27 21:51:00,775 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 21:51:00,775 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 21:51:00,779 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 21:51:00,840 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 21:51:00,840 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 21:51:00,840 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1933745060] [2024-06-27 21:51:00,840 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1933745060] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 21:51:00,840 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 21:51:00,840 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-27 21:51:00,840 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1086223048] [2024-06-27 21:51:00,841 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 21:51:00,842 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-27 21:51:00,842 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 21:51:00,842 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-27 21:51:00,842 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2024-06-27 21:51:00,859 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 20 out of 44 [2024-06-27 21:51:00,860 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 151 places, 95 transitions, 889 flow. Second operand has 8 states, 8 states have (on average 21.875) internal successors, (175), 8 states have internal predecessors, (175), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 21:51:00,860 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 21:51:00,860 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 20 of 44 [2024-06-27 21:51:00,860 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 21:51:01,585 INFO L124 PetriNetUnfolderBase]: 3785/7977 cut-off events. [2024-06-27 21:51:01,585 INFO L125 PetriNetUnfolderBase]: For 16572/16716 co-relation queries the response was YES. [2024-06-27 21:51:01,611 INFO L83 FinitePrefix]: Finished finitePrefix Result has 20427 conditions, 7977 events. 3785/7977 cut-off events. For 16572/16716 co-relation queries the response was YES. Maximal size of possible extension queue 816. Compared 77764 event pairs, 1250 based on Foata normal form. 37/7176 useless extension candidates. Maximal degree in co-relation 20364. Up to 2073 conditions per place. [2024-06-27 21:51:01,628 INFO L140 encePairwiseOnDemand]: 37/44 looper letters, 89 selfloop transitions, 31 changer transitions 0/140 dead transitions. [2024-06-27 21:51:01,628 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 159 places, 140 transitions, 1197 flow [2024-06-27 21:51:01,628 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 21:51:01,628 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 21:51:01,629 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 282 transitions. [2024-06-27 21:51:01,629 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6409090909090909 [2024-06-27 21:51:01,629 INFO L175 Difference]: Start difference. First operand has 151 places, 95 transitions, 889 flow. Second operand 10 states and 282 transitions. [2024-06-27 21:51:01,629 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 159 places, 140 transitions, 1197 flow [2024-06-27 21:51:01,646 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 126 places, 140 transitions, 1045 flow, removed 0 selfloop flow, removed 33 redundant places. [2024-06-27 21:51:01,647 INFO L231 Difference]: Finished difference. Result has 126 places, 94 transitions, 741 flow [2024-06-27 21:51:01,647 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=679, PETRI_DIFFERENCE_MINUEND_PLACES=117, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=94, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=31, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=63, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=741, PETRI_PLACES=126, PETRI_TRANSITIONS=94} [2024-06-27 21:51:01,647 INFO L281 CegarLoopForPetriNet]: 48 programPoint places, 78 predicate places. [2024-06-27 21:51:01,647 INFO L495 AbstractCegarLoop]: Abstraction has has 126 places, 94 transitions, 741 flow [2024-06-27 21:51:01,648 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 21.875) internal successors, (175), 8 states have internal predecessors, (175), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 21:51:01,648 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 21:51:01,648 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 21:51:01,648 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable36 [2024-06-27 21:51:01,648 INFO L420 AbstractCegarLoop]: === Iteration 38 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 21:51:01,648 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 21:51:01,648 INFO L85 PathProgramCache]: Analyzing trace with hash 1340354067, now seen corresponding path program 1 times [2024-06-27 21:51:01,648 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 21:51:01,648 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1511336977] [2024-06-27 21:51:01,648 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 21:51:01,649 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 21:51:01,671 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 21:51:01,724 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 21:51:01,724 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 21:51:01,724 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1511336977] [2024-06-27 21:51:01,724 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1511336977] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 21:51:01,724 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 21:51:01,724 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-06-27 21:51:01,724 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [535132] [2024-06-27 21:51:01,724 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 21:51:01,725 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-06-27 21:51:01,725 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 21:51:01,726 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-06-27 21:51:01,726 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-06-27 21:51:01,731 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 24 out of 44 [2024-06-27 21:51:01,732 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 126 places, 94 transitions, 741 flow. Second operand has 5 states, 5 states have (on average 26.6) internal successors, (133), 5 states have internal predecessors, (133), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 21:51:01,732 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 21:51:01,732 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 24 of 44 [2024-06-27 21:51:01,732 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 21:51:02,275 INFO L124 PetriNetUnfolderBase]: 4147/8272 cut-off events. [2024-06-27 21:51:02,275 INFO L125 PetriNetUnfolderBase]: For 3247/4460 co-relation queries the response was YES. [2024-06-27 21:51:02,294 INFO L83 FinitePrefix]: Finished finitePrefix Result has 19017 conditions, 8272 events. 4147/8272 cut-off events. For 3247/4460 co-relation queries the response was YES. Maximal size of possible extension queue 734. Compared 74524 event pairs, 297 based on Foata normal form. 477/8471 useless extension candidates. Maximal degree in co-relation 18981. Up to 3572 conditions per place. [2024-06-27 21:51:02,310 INFO L140 encePairwiseOnDemand]: 38/44 looper letters, 38 selfloop transitions, 8 changer transitions 0/118 dead transitions. [2024-06-27 21:51:02,310 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 130 places, 118 transitions, 901 flow [2024-06-27 21:51:02,310 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-06-27 21:51:02,310 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-06-27 21:51:02,311 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 168 transitions. [2024-06-27 21:51:02,311 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.7636363636363637 [2024-06-27 21:51:02,311 INFO L175 Difference]: Start difference. First operand has 126 places, 94 transitions, 741 flow. Second operand 5 states and 168 transitions. [2024-06-27 21:51:02,311 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 130 places, 118 transitions, 901 flow [2024-06-27 21:51:02,314 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 123 places, 118 transitions, 842 flow, removed 0 selfloop flow, removed 7 redundant places. [2024-06-27 21:51:02,315 INFO L231 Difference]: Finished difference. Result has 125 places, 98 transitions, 736 flow [2024-06-27 21:51:02,315 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=682, PETRI_DIFFERENCE_MINUEND_PLACES=119, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=94, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=86, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=736, PETRI_PLACES=125, PETRI_TRANSITIONS=98} [2024-06-27 21:51:02,315 INFO L281 CegarLoopForPetriNet]: 48 programPoint places, 77 predicate places. [2024-06-27 21:51:02,315 INFO L495 AbstractCegarLoop]: Abstraction has has 125 places, 98 transitions, 736 flow [2024-06-27 21:51:02,316 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 26.6) internal successors, (133), 5 states have internal predecessors, (133), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 21:51:02,316 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 21:51:02,316 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 21:51:02,316 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable37 [2024-06-27 21:51:02,316 INFO L420 AbstractCegarLoop]: === Iteration 39 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 21:51:02,316 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 21:51:02,317 INFO L85 PathProgramCache]: Analyzing trace with hash 1579814811, now seen corresponding path program 1 times [2024-06-27 21:51:02,317 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 21:51:02,317 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [633541739] [2024-06-27 21:51:02,317 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 21:51:02,317 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 21:51:02,324 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 21:51:02,369 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 21:51:02,370 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 21:51:02,370 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [633541739] [2024-06-27 21:51:02,370 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [633541739] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 21:51:02,370 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 21:51:02,370 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-27 21:51:02,370 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [381828354] [2024-06-27 21:51:02,370 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 21:51:02,371 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-06-27 21:51:02,371 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 21:51:02,371 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-06-27 21:51:02,371 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2024-06-27 21:51:02,374 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 24 out of 44 [2024-06-27 21:51:02,374 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 125 places, 98 transitions, 736 flow. Second operand has 6 states, 6 states have (on average 26.333333333333332) internal successors, (158), 6 states have internal predecessors, (158), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 21:51:02,375 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 21:51:02,375 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 24 of 44 [2024-06-27 21:51:02,375 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 21:51:02,846 INFO L124 PetriNetUnfolderBase]: 3427/6480 cut-off events. [2024-06-27 21:51:02,847 INFO L125 PetriNetUnfolderBase]: For 8965/11454 co-relation queries the response was YES. [2024-06-27 21:51:02,864 INFO L83 FinitePrefix]: Finished finitePrefix Result has 19194 conditions, 6480 events. 3427/6480 cut-off events. For 8965/11454 co-relation queries the response was YES. Maximal size of possible extension queue 677. Compared 52779 event pairs, 141 based on Foata normal form. 461/6663 useless extension candidates. Maximal degree in co-relation 19156. Up to 2308 conditions per place. [2024-06-27 21:51:02,876 INFO L140 encePairwiseOnDemand]: 38/44 looper letters, 37 selfloop transitions, 11 changer transitions 0/120 dead transitions. [2024-06-27 21:51:02,876 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 130 places, 120 transitions, 887 flow [2024-06-27 21:51:02,876 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-27 21:51:02,876 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-27 21:51:02,877 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 194 transitions. [2024-06-27 21:51:02,877 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.7348484848484849 [2024-06-27 21:51:02,877 INFO L175 Difference]: Start difference. First operand has 125 places, 98 transitions, 736 flow. Second operand 6 states and 194 transitions. [2024-06-27 21:51:02,877 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 130 places, 120 transitions, 887 flow [2024-06-27 21:51:02,883 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 128 places, 120 transitions, 874 flow, removed 3 selfloop flow, removed 2 redundant places. [2024-06-27 21:51:02,884 INFO L231 Difference]: Finished difference. Result has 130 places, 99 transitions, 768 flow [2024-06-27 21:51:02,884 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=724, PETRI_DIFFERENCE_MINUEND_PLACES=123, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=98, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=87, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=768, PETRI_PLACES=130, PETRI_TRANSITIONS=99} [2024-06-27 21:51:02,885 INFO L281 CegarLoopForPetriNet]: 48 programPoint places, 82 predicate places. [2024-06-27 21:51:02,885 INFO L495 AbstractCegarLoop]: Abstraction has has 130 places, 99 transitions, 768 flow [2024-06-27 21:51:02,885 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 26.333333333333332) internal successors, (158), 6 states have internal predecessors, (158), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 21:51:02,885 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 21:51:02,885 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 21:51:02,885 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable38 [2024-06-27 21:51:02,885 INFO L420 AbstractCegarLoop]: === Iteration 40 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 21:51:02,887 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 21:51:02,887 INFO L85 PathProgramCache]: Analyzing trace with hash 1315486704, now seen corresponding path program 1 times [2024-06-27 21:51:02,887 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 21:51:02,887 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1046049702] [2024-06-27 21:51:02,887 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 21:51:02,888 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 21:51:02,895 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 21:51:02,975 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 21:51:02,975 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 21:51:02,975 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1046049702] [2024-06-27 21:51:02,975 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1046049702] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 21:51:02,976 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 21:51:02,976 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-27 21:51:02,976 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [768304247] [2024-06-27 21:51:02,976 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 21:51:02,976 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-27 21:51:02,976 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 21:51:02,977 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-27 21:51:02,977 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2024-06-27 21:51:03,011 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 22 out of 44 [2024-06-27 21:51:03,011 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 130 places, 99 transitions, 768 flow. Second operand has 7 states, 7 states have (on average 24.428571428571427) internal successors, (171), 7 states have internal predecessors, (171), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 21:51:03,011 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 21:51:03,011 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 22 of 44 [2024-06-27 21:51:03,012 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 21:51:03,471 INFO L124 PetriNetUnfolderBase]: 2713/5852 cut-off events. [2024-06-27 21:51:03,472 INFO L125 PetriNetUnfolderBase]: For 10743/10942 co-relation queries the response was YES. [2024-06-27 21:51:03,490 INFO L83 FinitePrefix]: Finished finitePrefix Result has 17348 conditions, 5852 events. 2713/5852 cut-off events. For 10743/10942 co-relation queries the response was YES. Maximal size of possible extension queue 556. Compared 53865 event pairs, 955 based on Foata normal form. 123/5316 useless extension candidates. Maximal degree in co-relation 17308. Up to 1765 conditions per place. [2024-06-27 21:51:03,496 INFO L140 encePairwiseOnDemand]: 38/44 looper letters, 27 selfloop transitions, 8 changer transitions 52/115 dead transitions. [2024-06-27 21:51:03,496 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 135 places, 115 transitions, 974 flow [2024-06-27 21:51:03,499 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-27 21:51:03,500 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-27 21:51:03,500 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 172 transitions. [2024-06-27 21:51:03,500 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6515151515151515 [2024-06-27 21:51:03,500 INFO L175 Difference]: Start difference. First operand has 130 places, 99 transitions, 768 flow. Second operand 6 states and 172 transitions. [2024-06-27 21:51:03,500 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 135 places, 115 transitions, 974 flow [2024-06-27 21:51:03,527 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 132 places, 115 transitions, 950 flow, removed 6 selfloop flow, removed 3 redundant places. [2024-06-27 21:51:03,529 INFO L231 Difference]: Finished difference. Result has 135 places, 58 transitions, 399 flow [2024-06-27 21:51:03,529 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=744, PETRI_DIFFERENCE_MINUEND_PLACES=127, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=99, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=91, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=399, PETRI_PLACES=135, PETRI_TRANSITIONS=58} [2024-06-27 21:51:03,529 INFO L281 CegarLoopForPetriNet]: 48 programPoint places, 87 predicate places. [2024-06-27 21:51:03,529 INFO L495 AbstractCegarLoop]: Abstraction has has 135 places, 58 transitions, 399 flow [2024-06-27 21:51:03,529 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 24.428571428571427) internal successors, (171), 7 states have internal predecessors, (171), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 21:51:03,529 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 21:51:03,529 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 21:51:03,529 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable39 [2024-06-27 21:51:03,530 INFO L420 AbstractCegarLoop]: === Iteration 41 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 21:51:03,530 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 21:51:03,530 INFO L85 PathProgramCache]: Analyzing trace with hash 771818624, now seen corresponding path program 2 times [2024-06-27 21:51:03,530 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 21:51:03,530 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [138085625] [2024-06-27 21:51:03,530 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 21:51:03,530 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 21:51:03,537 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 21:51:03,600 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 21:51:03,600 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 21:51:03,600 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [138085625] [2024-06-27 21:51:03,601 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [138085625] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 21:51:03,601 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 21:51:03,601 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-27 21:51:03,601 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [408230399] [2024-06-27 21:51:03,601 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 21:51:03,601 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-06-27 21:51:03,601 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 21:51:03,601 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-06-27 21:51:03,601 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-06-27 21:51:03,634 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 22 out of 44 [2024-06-27 21:51:03,635 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 135 places, 58 transitions, 399 flow. Second operand has 6 states, 6 states have (on average 24.833333333333332) internal successors, (149), 6 states have internal predecessors, (149), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 21:51:03,635 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 21:51:03,635 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 22 of 44 [2024-06-27 21:51:03,635 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 21:51:03,835 INFO L124 PetriNetUnfolderBase]: 802/1729 cut-off events. [2024-06-27 21:51:03,835 INFO L125 PetriNetUnfolderBase]: For 2391/2465 co-relation queries the response was YES. [2024-06-27 21:51:03,841 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5002 conditions, 1729 events. 802/1729 cut-off events. For 2391/2465 co-relation queries the response was YES. Maximal size of possible extension queue 183. Compared 12613 event pairs, 237 based on Foata normal form. 48/1558 useless extension candidates. Maximal degree in co-relation 4959. Up to 559 conditions per place. [2024-06-27 21:51:03,843 INFO L140 encePairwiseOnDemand]: 37/44 looper letters, 21 selfloop transitions, 3 changer transitions 31/78 dead transitions. [2024-06-27 21:51:03,843 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 120 places, 78 transitions, 561 flow [2024-06-27 21:51:03,843 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-27 21:51:03,843 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-27 21:51:03,844 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 199 transitions. [2024-06-27 21:51:03,844 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6461038961038961 [2024-06-27 21:51:03,844 INFO L175 Difference]: Start difference. First operand has 135 places, 58 transitions, 399 flow. Second operand 7 states and 199 transitions. [2024-06-27 21:51:03,844 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 120 places, 78 transitions, 561 flow [2024-06-27 21:51:03,850 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 84 places, 78 transitions, 430 flow, removed 7 selfloop flow, removed 36 redundant places. [2024-06-27 21:51:03,850 INFO L231 Difference]: Finished difference. Result has 87 places, 43 transitions, 199 flow [2024-06-27 21:51:03,851 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=272, PETRI_DIFFERENCE_MINUEND_PLACES=78, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=58, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=55, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=199, PETRI_PLACES=87, PETRI_TRANSITIONS=43} [2024-06-27 21:51:03,851 INFO L281 CegarLoopForPetriNet]: 48 programPoint places, 39 predicate places. [2024-06-27 21:51:03,851 INFO L495 AbstractCegarLoop]: Abstraction has has 87 places, 43 transitions, 199 flow [2024-06-27 21:51:03,851 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 24.833333333333332) internal successors, (149), 6 states have internal predecessors, (149), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 21:51:03,851 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 21:51:03,852 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 21:51:03,852 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable40 [2024-06-27 21:51:03,852 INFO L420 AbstractCegarLoop]: === Iteration 42 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 21:51:03,852 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 21:51:03,852 INFO L85 PathProgramCache]: Analyzing trace with hash -834747060, now seen corresponding path program 3 times [2024-06-27 21:51:03,852 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 21:51:03,853 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2107793142] [2024-06-27 21:51:03,853 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 21:51:03,853 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 21:51:03,874 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 21:51:03,946 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 21:51:03,947 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 21:51:03,947 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2107793142] [2024-06-27 21:51:03,947 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2107793142] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 21:51:03,947 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 21:51:03,947 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-27 21:51:03,947 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2107025722] [2024-06-27 21:51:03,947 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 21:51:03,948 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-27 21:51:03,948 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 21:51:03,948 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-27 21:51:03,948 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2024-06-27 21:51:03,986 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 22 out of 44 [2024-06-27 21:51:03,986 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 87 places, 43 transitions, 199 flow. Second operand has 7 states, 7 states have (on average 24.428571428571427) internal successors, (171), 7 states have internal predecessors, (171), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 21:51:03,986 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 21:51:03,986 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 22 of 44 [2024-06-27 21:51:03,986 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 21:51:04,071 INFO L124 PetriNetUnfolderBase]: 126/305 cut-off events. [2024-06-27 21:51:04,071 INFO L125 PetriNetUnfolderBase]: For 290/290 co-relation queries the response was YES. [2024-06-27 21:51:04,072 INFO L83 FinitePrefix]: Finished finitePrefix Result has 839 conditions, 305 events. 126/305 cut-off events. For 290/290 co-relation queries the response was YES. Maximal size of possible extension queue 29. Compared 1322 event pairs, 20 based on Foata normal form. 8/294 useless extension candidates. Maximal degree in co-relation 825. Up to 111 conditions per place. [2024-06-27 21:51:04,072 INFO L140 encePairwiseOnDemand]: 39/44 looper letters, 0 selfloop transitions, 0 changer transitions 50/50 dead transitions. [2024-06-27 21:51:04,072 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 71 places, 50 transitions, 267 flow [2024-06-27 21:51:04,072 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-27 21:51:04,073 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-27 21:51:04,074 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 161 transitions. [2024-06-27 21:51:04,074 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6098484848484849 [2024-06-27 21:51:04,074 INFO L175 Difference]: Start difference. First operand has 87 places, 43 transitions, 199 flow. Second operand 6 states and 161 transitions. [2024-06-27 21:51:04,075 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 71 places, 50 transitions, 267 flow [2024-06-27 21:51:04,075 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 61 places, 50 transitions, 236 flow, removed 4 selfloop flow, removed 10 redundant places. [2024-06-27 21:51:04,077 INFO L231 Difference]: Finished difference. Result has 61 places, 0 transitions, 0 flow [2024-06-27 21:51:04,077 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=162, PETRI_DIFFERENCE_MINUEND_PLACES=56, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=41, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=41, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=0, PETRI_PLACES=61, PETRI_TRANSITIONS=0} [2024-06-27 21:51:04,078 INFO L281 CegarLoopForPetriNet]: 48 programPoint places, 13 predicate places. [2024-06-27 21:51:04,078 INFO L495 AbstractCegarLoop]: Abstraction has has 61 places, 0 transitions, 0 flow [2024-06-27 21:51:04,078 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 24.428571428571427) internal successors, (171), 7 states have internal predecessors, (171), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 21:51:04,080 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT (6 of 7 remaining) [2024-06-27 21:51:04,080 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (5 of 7 remaining) [2024-06-27 21:51:04,081 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (4 of 7 remaining) [2024-06-27 21:51:04,081 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION (3 of 7 remaining) [2024-06-27 21:51:04,081 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (2 of 7 remaining) [2024-06-27 21:51:04,081 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 7 remaining) [2024-06-27 21:51:04,081 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 7 remaining) [2024-06-27 21:51:04,081 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable41 [2024-06-27 21:51:04,081 INFO L445 BasicCegarLoop]: Path program histogram: [13, 8, 4, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 21:51:04,084 INFO L229 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2024-06-27 21:51:04,084 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2024-06-27 21:51:04,097 INFO L507 ceAbstractionStarter]: Automizer considered 3 witness invariants [2024-06-27 21:51:04,098 INFO L508 ceAbstractionStarter]: WitnessConsidered=3 [2024-06-27 21:51:04,098 INFO L201 PluginConnector]: Adding new model witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 27.06 09:51:04 BasicIcfg [2024-06-27 21:51:04,099 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2024-06-27 21:51:04,099 INFO L158 Benchmark]: Toolchain (without parser) took 21296.57ms. Allocated memory was 151.0MB in the beginning and 3.4GB in the end (delta: 3.2GB). Free memory was 75.9MB in the beginning and 1.9GB in the end (delta: -1.8GB). Peak memory consumption was 1.4GB. Max. memory is 16.1GB. [2024-06-27 21:51:04,099 INFO L158 Benchmark]: CDTParser took 0.13ms. Allocated memory is still 121.6MB. Free memory is still 81.8MB. There was no memory consumed. Max. memory is 16.1GB. [2024-06-27 21:51:04,099 INFO L158 Benchmark]: Witness Parser took 0.14ms. Allocated memory is still 151.0MB. Free memory is still 78.8MB. There was no memory consumed. Max. memory is 16.1GB. [2024-06-27 21:51:04,099 INFO L158 Benchmark]: CACSL2BoogieTranslator took 404.63ms. Allocated memory is still 151.0MB. Free memory was 75.9MB in the beginning and 119.0MB in the end (delta: -43.1MB). Peak memory consumption was 33.3MB. Max. memory is 16.1GB. [2024-06-27 21:51:04,099 INFO L158 Benchmark]: Boogie Procedure Inliner took 45.97ms. Allocated memory is still 151.0MB. Free memory was 119.0MB in the beginning and 117.3MB in the end (delta: 1.8MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2024-06-27 21:51:04,100 INFO L158 Benchmark]: Boogie Preprocessor took 40.31ms. Allocated memory is still 151.0MB. Free memory was 117.3MB in the beginning and 115.2MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2024-06-27 21:51:04,100 INFO L158 Benchmark]: RCFGBuilder took 424.90ms. Allocated memory is still 151.0MB. Free memory was 115.2MB in the beginning and 94.9MB in the end (delta: 20.3MB). Peak memory consumption was 21.0MB. Max. memory is 16.1GB. [2024-06-27 21:51:04,100 INFO L158 Benchmark]: TraceAbstraction took 20376.30ms. Allocated memory was 151.0MB in the beginning and 3.4GB in the end (delta: 3.2GB). Free memory was 94.2MB in the beginning and 1.9GB in the end (delta: -1.8GB). Peak memory consumption was 1.4GB. Max. memory is 16.1GB. [2024-06-27 21:51:04,103 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.13ms. Allocated memory is still 121.6MB. Free memory is still 81.8MB. There was no memory consumed. Max. memory is 16.1GB. * Witness Parser took 0.14ms. Allocated memory is still 151.0MB. Free memory is still 78.8MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 404.63ms. Allocated memory is still 151.0MB. Free memory was 75.9MB in the beginning and 119.0MB in the end (delta: -43.1MB). Peak memory consumption was 33.3MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 45.97ms. Allocated memory is still 151.0MB. Free memory was 119.0MB in the beginning and 117.3MB in the end (delta: 1.8MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 40.31ms. Allocated memory is still 151.0MB. Free memory was 117.3MB in the beginning and 115.2MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 424.90ms. Allocated memory is still 151.0MB. Free memory was 115.2MB in the beginning and 94.9MB in the end (delta: 20.3MB). Peak memory consumption was 21.0MB. Max. memory is 16.1GB. * TraceAbstraction took 20376.30ms. Allocated memory was 151.0MB in the beginning and 3.4GB in the end (delta: 3.2GB). Free memory was 94.2MB in the beginning and 1.9GB in the end (delta: -1.8GB). Peak memory consumption was 1.4GB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 778]: invariant of correctness witness holds For all program executions holds that invariant of correctness witness holds at this location - PositiveResult [Line: 780]: invariant of correctness witness holds For all program executions holds that invariant of correctness witness holds at this location - PositiveResult [Line: 781]: invariant of correctness witness holds For all program executions holds that invariant of correctness witness holds at this location - PositiveResult [Line: 18]: a call to reach_error is unreachable For all program executions holds that a call to reach_error is unreachable at this location - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 7 procedures, 67 locations, 7 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: 20.3s, OverallIterations: 42, TraceHistogramMax: 1, PathProgramHistogramMax: 13, EmptinessCheckTime: 0.0s, AutomataDifference: 16.3s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 3124 SdHoareTripleChecker+Valid, 3.2s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 2663 mSDsluCounter, 647 SdHoareTripleChecker+Invalid, 2.6s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 388 mSDsCounter, 241 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 7044 IncrementalHoareTripleChecker+Invalid, 7285 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 241 mSolverCounterUnsat, 259 mSDtfsCounter, 7044 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 272 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 264 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 115 ImplicationChecksByTransitivity, 1.4s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=889occurred in iteration=36, InterpolantAutomatonStates: 273, 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: 0.1s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 3.3s InterpolantComputationTime, 776 NumberOfCodeBlocks, 776 NumberOfCodeBlocksAsserted, 42 NumberOfCheckSat, 734 ConstructedInterpolants, 0 QuantifiedInterpolants, 5572 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 42 InterpolantComputations, 42 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 4 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2024-06-27 21:51:04,123 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Ended with exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: TRUE