./Ultimate.py --spec ../../../trunk/examples/svcomp/properties/unreach-call.prp --file ../../../trunk/examples/svcomp/pthread-wmm/safe002_tso.i --full-output --witness-type correctness_witness --witnessparser.only.consider.loop.invariants false --validate ./goblint.2024-06-19_11-23-25.files/mutex-meet-nonrel/safe002_tso.yml/witness.yml --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 7724a2de Calling Ultimate with: /root/.sdkman/candidates/java/current/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReachWitnessValidation.xml -i ../../../trunk/examples/svcomp/pthread-wmm/safe002_tso.i ./goblint.2024-06-19_11-23-25.files/mutex-meet-nonrel/safe002_tso.yml/witness.yml -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --traceabstraction.compute.hoare.annotation.of.negated.interpolant.automaton,.abstraction.and.cfg false --witnessparser.only.consider.loop.invariants false --- Real Ultimate output --- This is Ultimate 0.2.4-tmp.fs.goblint-validation-7724a2d-m [2024-06-28 00:52:47,409 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-06-28 00:52:47,441 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-06-28 00:52:47,444 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-06-28 00:52:47,444 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-06-28 00:52:47,458 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-06-28 00:52:47,463 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-06-28 00:52:47,464 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-06-28 00:52:47,465 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-06-28 00:52:47,465 INFO L153 SettingsManager]: * Use memory slicer=true [2024-06-28 00:52:47,466 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-06-28 00:52:47,466 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-06-28 00:52:47,466 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-06-28 00:52:47,467 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-06-28 00:52:47,467 INFO L153 SettingsManager]: * Use SBE=true [2024-06-28 00:52:47,467 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-06-28 00:52:47,467 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-06-28 00:52:47,468 INFO L153 SettingsManager]: * sizeof long=4 [2024-06-28 00:52:47,468 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-06-28 00:52:47,468 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-06-28 00:52:47,468 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-06-28 00:52:47,469 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-06-28 00:52:47,469 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-06-28 00:52:47,469 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-06-28 00:52:47,469 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-06-28 00:52:47,470 INFO L153 SettingsManager]: * sizeof long double=12 [2024-06-28 00:52:47,470 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-06-28 00:52:47,470 INFO L153 SettingsManager]: * Use constant arrays=true [2024-06-28 00:52:47,470 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-06-28 00:52:47,470 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-06-28 00:52:47,471 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-06-28 00:52:47,471 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-06-28 00:52:47,471 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-06-28 00:52:47,471 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-06-28 00:52:47,472 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-06-28 00:52:47,472 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-06-28 00:52:47,472 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-06-28 00:52:47,472 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-06-28 00:52:47,473 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-06-28 00:52:47,473 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-06-28 00:52:47,473 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2024-06-28 00:52:47,473 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-06-28 00:52:47,473 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-06-28 00:52:47,474 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessparser: Only consider loop invariants -> false [2024-06-28 00:52:47,701 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-06-28 00:52:47,724 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-06-28 00:52:47,726 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-06-28 00:52:47,727 INFO L270 PluginConnector]: Initializing CDTParser... [2024-06-28 00:52:47,727 INFO L274 PluginConnector]: CDTParser initialized [2024-06-28 00:52:47,729 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-wmm/safe002_tso.i [2024-06-28 00:52:48,784 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-06-28 00:52:48,938 INFO L384 CDTParser]: Found 1 translation units. [2024-06-28 00:52:48,938 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/safe002_tso.i [2024-06-28 00:52:48,949 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/767de98c0/c5ccceccec5941e890ed4313f01fc456/FLAGe5082cb43 [2024-06-28 00:52:48,961 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/767de98c0/c5ccceccec5941e890ed4313f01fc456 [2024-06-28 00:52:48,964 INFO L270 PluginConnector]: Initializing Witness Parser... [2024-06-28 00:52:48,964 INFO L274 PluginConnector]: Witness Parser initialized [2024-06-28 00:52:48,965 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/./goblint.2024-06-19_11-23-25.files/mutex-meet-nonrel/safe002_tso.yml/witness.yml [2024-06-28 00:52:49,042 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-06-28 00:52:49,043 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2024-06-28 00:52:49,044 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-06-28 00:52:49,044 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-06-28 00:52:49,047 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-06-28 00:52:49,048 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.06 12:52:48" (1/2) ... [2024-06-28 00:52:49,049 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1d925681 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.06 12:52:49, skipping insertion in model container [2024-06-28 00:52:49,049 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.06 12:52:48" (1/2) ... [2024-06-28 00:52:49,050 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@7291dc0b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.06 12:52:49, skipping insertion in model container [2024-06-28 00:52:49,051 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 28.06 12:52:49" (2/2) ... [2024-06-28 00:52:49,051 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1d925681 and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 28.06 12:52:49, skipping insertion in model container [2024-06-28 00:52:49,051 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 28.06 12:52:49" (2/2) ... [2024-06-28 00:52:49,051 INFO L83 nessWitnessExtractor]: Extracting all invariants from correctness witness [2024-06-28 00:52:49,093 INFO L95 edCorrectnessWitness]: Found the following entries in the witness: [2024-06-28 00:52:49,094 INFO L97 edCorrectnessWitness]: Location invariant before [L781-L781] ((((((! multithreaded || 0 <= __unbuffered_cnt) && (! multithreaded || (__unbuffered_p0_EBX == 0 || __unbuffered_p0_EBX == 1))) && (! multithreaded || ((__unbuffered_p0_EAX == 0 || __unbuffered_p0_EAX == 1) || __unbuffered_p0_EAX == 2))) && (! multithreaded || ((__unbuffered_p2_EAX == 0 || __unbuffered_p2_EAX == 1) || __unbuffered_p2_EAX == 2))) && (! multithreaded || ((y == 0 || y == 1) || y == 2))) && (! multithreaded || (((((0 <= __unbuffered_cnt && (__unbuffered_p0_EBX == 0 || __unbuffered_p0_EBX == 1)) && (x == 0 || x == 1)) && ((__unbuffered_p0_EAX == 0 || __unbuffered_p0_EAX == 1) || __unbuffered_p0_EAX == 2)) && ((__unbuffered_p2_EAX == 0 || __unbuffered_p2_EAX == 1) || __unbuffered_p2_EAX == 2)) && ((y == 0 || y == 1) || y == 2)))) && (! multithreaded || (x == 0 || x == 1)) [2024-06-28 00:52:49,094 INFO L97 edCorrectnessWitness]: Location invariant before [L784-L784] ((((((! multithreaded || 0 <= __unbuffered_cnt) && (! multithreaded || (__unbuffered_p0_EBX == 0 || __unbuffered_p0_EBX == 1))) && (! multithreaded || ((__unbuffered_p0_EAX == 0 || __unbuffered_p0_EAX == 1) || __unbuffered_p0_EAX == 2))) && (! multithreaded || ((__unbuffered_p2_EAX == 0 || __unbuffered_p2_EAX == 1) || __unbuffered_p2_EAX == 2))) && (! multithreaded || ((y == 0 || y == 1) || y == 2))) && (! multithreaded || (((((0 <= __unbuffered_cnt && (__unbuffered_p0_EBX == 0 || __unbuffered_p0_EBX == 1)) && (x == 0 || x == 1)) && ((__unbuffered_p0_EAX == 0 || __unbuffered_p0_EAX == 1) || __unbuffered_p0_EAX == 2)) && ((__unbuffered_p2_EAX == 0 || __unbuffered_p2_EAX == 1) || __unbuffered_p2_EAX == 2)) && ((y == 0 || y == 1) || y == 2)))) && (! multithreaded || (x == 0 || x == 1)) [2024-06-28 00:52:49,094 INFO L97 edCorrectnessWitness]: Location invariant before [L783-L783] ((((((! multithreaded || 0 <= __unbuffered_cnt) && (! multithreaded || (__unbuffered_p0_EBX == 0 || __unbuffered_p0_EBX == 1))) && (! multithreaded || ((__unbuffered_p0_EAX == 0 || __unbuffered_p0_EAX == 1) || __unbuffered_p0_EAX == 2))) && (! multithreaded || ((__unbuffered_p2_EAX == 0 || __unbuffered_p2_EAX == 1) || __unbuffered_p2_EAX == 2))) && (! multithreaded || ((y == 0 || y == 1) || y == 2))) && (! multithreaded || (((((0 <= __unbuffered_cnt && (__unbuffered_p0_EBX == 0 || __unbuffered_p0_EBX == 1)) && (x == 0 || x == 1)) && ((__unbuffered_p0_EAX == 0 || __unbuffered_p0_EAX == 1) || __unbuffered_p0_EAX == 2)) && ((__unbuffered_p2_EAX == 0 || __unbuffered_p2_EAX == 1) || __unbuffered_p2_EAX == 2)) && ((y == 0 || y == 1) || y == 2)))) && (! multithreaded || (x == 0 || x == 1)) [2024-06-28 00:52:49,095 INFO L103 edCorrectnessWitness]: ghost_variable multithreaded = 0 [2024-06-28 00:52:49,095 INFO L106 edCorrectnessWitness]: ghost_update [L779-L779] multithreaded = 1; [2024-06-28 00:52:49,130 INFO L177 MainTranslator]: Built tables and reachable declarations [2024-06-28 00:52:49,245 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/safe002_tso.i[945,958] [2024-06-28 00:52:49,366 INFO L207 PostProcessor]: Analyzing one entry point: main [2024-06-28 00:52:49,374 INFO L202 MainTranslator]: Completed pre-run Start Parsing Local [2024-06-28 00:52:49,410 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/safe002_tso.i[945,958] Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local [2024-06-28 00:52:49,490 INFO L207 PostProcessor]: Analyzing one entry point: main [2024-06-28 00:52:49,532 INFO L206 MainTranslator]: Completed translation [2024-06-28 00:52:49,533 INFO L201 PluginConnector]: Adding new model witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 28.06 12:52:49 WrapperNode [2024-06-28 00:52:49,534 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-06-28 00:52:49,535 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-06-28 00:52:49,535 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-06-28 00:52:49,535 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-06-28 00:52:49,541 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 28.06 12:52:49" (1/1) ... [2024-06-28 00:52:49,573 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 28.06 12:52:49" (1/1) ... [2024-06-28 00:52:49,607 INFO L138 Inliner]: procedures = 175, calls = 41, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 64 [2024-06-28 00:52:49,610 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-06-28 00:52:49,611 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-06-28 00:52:49,611 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-06-28 00:52:49,611 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-06-28 00:52:49,619 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 28.06 12:52:49" (1/1) ... [2024-06-28 00:52:49,619 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 28.06 12:52:49" (1/1) ... [2024-06-28 00:52:49,621 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 28.06 12:52:49" (1/1) ... [2024-06-28 00:52:49,631 INFO L175 MemorySlicer]: Split 2 memory accesses to 1 slices as follows [2]. 100 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2]. The 0 writes are split as follows [0]. [2024-06-28 00:52:49,631 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 28.06 12:52:49" (1/1) ... [2024-06-28 00:52:49,632 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 28.06 12:52:49" (1/1) ... [2024-06-28 00:52:49,636 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 28.06 12:52:49" (1/1) ... [2024-06-28 00:52:49,644 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 28.06 12:52:49" (1/1) ... [2024-06-28 00:52:49,646 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 28.06 12:52:49" (1/1) ... [2024-06-28 00:52:49,647 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 28.06 12:52:49" (1/1) ... [2024-06-28 00:52:49,649 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-06-28 00:52:49,649 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-06-28 00:52:49,649 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-06-28 00:52:49,649 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-06-28 00:52:49,650 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 28.06 12:52:49" (1/1) ... [2024-06-28 00:52:49,655 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-06-28 00:52:49,660 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-06-28 00:52:49,674 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-06-28 00:52:49,680 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-06-28 00:52:49,707 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2024-06-28 00:52:49,707 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-06-28 00:52:49,707 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2024-06-28 00:52:49,708 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2024-06-28 00:52:49,708 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2024-06-28 00:52:49,708 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2024-06-28 00:52:49,708 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2024-06-28 00:52:49,708 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2024-06-28 00:52:49,708 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-06-28 00:52:49,709 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2024-06-28 00:52:49,709 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-06-28 00:52:49,709 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-06-28 00:52:49,710 WARN L214 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2024-06-28 00:52:49,795 INFO L244 CfgBuilder]: Building ICFG [2024-06-28 00:52:49,797 INFO L270 CfgBuilder]: Building CFG for each procedure with an implementation [2024-06-28 00:52:50,034 INFO L289 CfgBuilder]: Ommited future-live optimization because the input is a concurrent program. [2024-06-28 00:52:50,034 INFO L293 CfgBuilder]: Performing block encoding [2024-06-28 00:52:50,099 INFO L315 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-06-28 00:52:50,099 INFO L320 CfgBuilder]: Removed 0 assume(true) statements. [2024-06-28 00:52:50,099 INFO L201 PluginConnector]: Adding new model witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.06 12:52:50 BoogieIcfgContainer [2024-06-28 00:52:50,099 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-06-28 00:52:50,101 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-06-28 00:52:50,101 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-06-28 00:52:50,104 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-06-28 00:52:50,104 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.06 12:52:48" (1/4) ... [2024-06-28 00:52:50,105 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@635b1d75 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.06 12:52:50, skipping insertion in model container [2024-06-28 00:52:50,106 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 28.06 12:52:49" (2/4) ... [2024-06-28 00:52:50,106 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@635b1d75 and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CORRECTNESS_WITNESS 28.06 12:52:50, skipping insertion in model container [2024-06-28 00:52:50,107 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 28.06 12:52:49" (3/4) ... [2024-06-28 00:52:50,107 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@635b1d75 and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CORRECTNESS_WITNESS 28.06 12:52:50, skipping insertion in model container [2024-06-28 00:52:50,107 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.06 12:52:50" (4/4) ... [2024-06-28 00:52:50,108 INFO L112 eAbstractionObserver]: Analyzing ICFG safe002_tso.i [2024-06-28 00:52:50,121 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-06-28 00:52:50,122 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 4 error locations. [2024-06-28 00:52:50,122 INFO L522 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-06-28 00:52:50,177 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2024-06-28 00:52:50,202 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 54 places, 45 transitions, 102 flow [2024-06-28 00:52:50,225 INFO L124 PetriNetUnfolderBase]: 1/42 cut-off events. [2024-06-28 00:52:50,226 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-06-28 00:52:50,229 INFO L83 FinitePrefix]: Finished finitePrefix Result has 52 conditions, 42 events. 1/42 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 66 event pairs, 0 based on Foata normal form. 0/37 useless extension candidates. Maximal degree in co-relation 43. Up to 2 conditions per place. [2024-06-28 00:52:50,230 INFO L82 GeneralOperation]: Start removeDead. Operand has 54 places, 45 transitions, 102 flow [2024-06-28 00:52:50,234 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 49 places, 39 transitions, 87 flow [2024-06-28 00:52:50,247 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-06-28 00:52:50,256 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;@405df6d, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-06-28 00:52:50,256 INFO L358 AbstractCegarLoop]: Starting to check reachability of 7 error locations. [2024-06-28 00:52:50,262 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-06-28 00:52:50,262 INFO L124 PetriNetUnfolderBase]: 0/5 cut-off events. [2024-06-28 00:52:50,262 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-06-28 00:52:50,262 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:52:50,263 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2024-06-28 00:52:50,264 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)] === [2024-06-28 00:52:50,269 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:52:50,269 INFO L85 PathProgramCache]: Analyzing trace with hash 210327718, now seen corresponding path program 1 times [2024-06-28 00:52:50,277 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:52:50,279 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [749112021] [2024-06-28 00:52:50,279 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:52:50,279 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:52:50,393 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:52:50,647 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:52:50,648 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:52:50,648 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [749112021] [2024-06-28 00:52:50,649 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [749112021] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:52:50,649 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:52:50,649 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-06-28 00:52:50,651 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [855122781] [2024-06-28 00:52:50,652 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:52:50,658 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-06-28 00:52:50,662 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:52:50,684 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-06-28 00:52:50,685 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-06-28 00:52:50,727 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 20 out of 45 [2024-06-28 00:52:50,731 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 49 places, 39 transitions, 87 flow. Second operand has 3 states, 3 states have (on average 21.333333333333332) internal successors, (64), 3 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:52:50,732 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:52:50,732 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 20 of 45 [2024-06-28 00:52:50,733 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:52:50,928 INFO L124 PetriNetUnfolderBase]: 696/1162 cut-off events. [2024-06-28 00:52:50,928 INFO L125 PetriNetUnfolderBase]: For 17/17 co-relation queries the response was YES. [2024-06-28 00:52:50,933 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2271 conditions, 1162 events. 696/1162 cut-off events. For 17/17 co-relation queries the response was YES. Maximal size of possible extension queue 93. Compared 6677 event pairs, 457 based on Foata normal form. 1/1114 useless extension candidates. Maximal degree in co-relation 2259. Up to 1056 conditions per place. [2024-06-28 00:52:50,941 INFO L140 encePairwiseOnDemand]: 38/45 looper letters, 31 selfloop transitions, 4 changer transitions 0/51 dead transitions. [2024-06-28 00:52:50,942 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 51 places, 51 transitions, 187 flow [2024-06-28 00:52:50,943 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-06-28 00:52:50,945 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-06-28 00:52:50,950 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 98 transitions. [2024-06-28 00:52:50,952 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.725925925925926 [2024-06-28 00:52:50,953 INFO L175 Difference]: Start difference. First operand has 49 places, 39 transitions, 87 flow. Second operand 3 states and 98 transitions. [2024-06-28 00:52:50,954 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 51 places, 51 transitions, 187 flow [2024-06-28 00:52:50,957 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 48 places, 51 transitions, 182 flow, removed 0 selfloop flow, removed 3 redundant places. [2024-06-28 00:52:50,962 INFO L231 Difference]: Finished difference. Result has 49 places, 42 transitions, 114 flow [2024-06-28 00:52:50,964 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=45, PETRI_DIFFERENCE_MINUEND_FLOW=84, PETRI_DIFFERENCE_MINUEND_PLACES=46, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=39, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=35, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=114, PETRI_PLACES=49, PETRI_TRANSITIONS=42} [2024-06-28 00:52:50,967 INFO L281 CegarLoopForPetriNet]: 49 programPoint places, 0 predicate places. [2024-06-28 00:52:50,967 INFO L495 AbstractCegarLoop]: Abstraction has has 49 places, 42 transitions, 114 flow [2024-06-28 00:52:50,967 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 21.333333333333332) internal successors, (64), 3 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:52:50,967 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:52:50,967 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:52:50,968 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-06-28 00:52:50,968 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 00:52:50,969 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:52:50,969 INFO L85 PathProgramCache]: Analyzing trace with hash -1914513620, now seen corresponding path program 1 times [2024-06-28 00:52:50,969 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:52:50,969 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1218959907] [2024-06-28 00:52:50,969 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:52:50,970 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:52:50,998 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:52:51,176 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:52:51,177 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:52:51,177 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1218959907] [2024-06-28 00:52:51,177 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1218959907] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:52:51,177 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:52:51,177 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-06-28 00:52:51,178 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [30086038] [2024-06-28 00:52:51,178 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:52:51,179 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-06-28 00:52:51,179 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:52:51,180 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-06-28 00:52:51,180 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2024-06-28 00:52:51,226 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 18 out of 45 [2024-06-28 00:52:51,227 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 49 places, 42 transitions, 114 flow. Second operand has 6 states, 6 states have (on average 19.166666666666668) internal successors, (115), 6 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:52:51,227 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:52:51,227 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 18 of 45 [2024-06-28 00:52:51,227 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:52:51,420 INFO L124 PetriNetUnfolderBase]: 1225/1978 cut-off events. [2024-06-28 00:52:51,421 INFO L125 PetriNetUnfolderBase]: For 324/338 co-relation queries the response was YES. [2024-06-28 00:52:51,424 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4385 conditions, 1978 events. 1225/1978 cut-off events. For 324/338 co-relation queries the response was YES. Maximal size of possible extension queue 120. Compared 10894 event pairs, 343 based on Foata normal form. 13/1939 useless extension candidates. Maximal degree in co-relation 4373. Up to 1745 conditions per place. [2024-06-28 00:52:51,433 INFO L140 encePairwiseOnDemand]: 38/45 looper letters, 41 selfloop transitions, 6 changer transitions 0/61 dead transitions. [2024-06-28 00:52:51,433 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 51 places, 61 transitions, 254 flow [2024-06-28 00:52:51,434 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-06-28 00:52:51,434 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-06-28 00:52:51,434 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 122 transitions. [2024-06-28 00:52:51,435 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6777777777777778 [2024-06-28 00:52:51,435 INFO L175 Difference]: Start difference. First operand has 49 places, 42 transitions, 114 flow. Second operand 4 states and 122 transitions. [2024-06-28 00:52:51,435 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 51 places, 61 transitions, 254 flow [2024-06-28 00:52:51,436 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 50 places, 61 transitions, 250 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-06-28 00:52:51,437 INFO L231 Difference]: Finished difference. Result has 51 places, 43 transitions, 137 flow [2024-06-28 00:52:51,437 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=45, PETRI_DIFFERENCE_MINUEND_FLOW=106, PETRI_DIFFERENCE_MINUEND_PLACES=47, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=41, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=35, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=137, PETRI_PLACES=51, PETRI_TRANSITIONS=43} [2024-06-28 00:52:51,438 INFO L281 CegarLoopForPetriNet]: 49 programPoint places, 2 predicate places. [2024-06-28 00:52:51,438 INFO L495 AbstractCegarLoop]: Abstraction has has 51 places, 43 transitions, 137 flow [2024-06-28 00:52:51,438 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 19.166666666666668) internal successors, (115), 6 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:52:51,438 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:52:51,439 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:52:51,439 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-06-28 00:52:51,439 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)] === [2024-06-28 00:52:51,439 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:52:51,439 INFO L85 PathProgramCache]: Analyzing trace with hash -1265517149, now seen corresponding path program 1 times [2024-06-28 00:52:51,440 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:52:51,440 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2117372213] [2024-06-28 00:52:51,440 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:52:51,440 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:52:51,446 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:52:51,581 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:52:51,581 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:52:51,581 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2117372213] [2024-06-28 00:52:51,581 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2117372213] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:52:51,581 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:52:51,581 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-06-28 00:52:51,581 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2057761284] [2024-06-28 00:52:51,581 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:52:51,582 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-06-28 00:52:51,582 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:52:51,583 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-06-28 00:52:51,583 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-06-28 00:52:51,611 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 19 out of 45 [2024-06-28 00:52:51,612 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 51 places, 43 transitions, 137 flow. Second operand has 4 states, 4 states have (on average 21.0) internal successors, (84), 4 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:52:51,612 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:52:51,612 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 19 of 45 [2024-06-28 00:52:51,612 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:52:51,745 INFO L124 PetriNetUnfolderBase]: 951/1567 cut-off events. [2024-06-28 00:52:51,746 INFO L125 PetriNetUnfolderBase]: For 696/699 co-relation queries the response was YES. [2024-06-28 00:52:51,748 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3757 conditions, 1567 events. 951/1567 cut-off events. For 696/699 co-relation queries the response was YES. Maximal size of possible extension queue 99. Compared 8505 event pairs, 353 based on Foata normal form. 4/1568 useless extension candidates. Maximal degree in co-relation 3743. Up to 1411 conditions per place. [2024-06-28 00:52:51,755 INFO L140 encePairwiseOnDemand]: 38/45 looper letters, 42 selfloop transitions, 7 changer transitions 0/64 dead transitions. [2024-06-28 00:52:51,755 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 54 places, 64 transitions, 295 flow [2024-06-28 00:52:51,756 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-06-28 00:52:51,756 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-06-28 00:52:51,759 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 122 transitions. [2024-06-28 00:52:51,760 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6777777777777778 [2024-06-28 00:52:51,760 INFO L175 Difference]: Start difference. First operand has 51 places, 43 transitions, 137 flow. Second operand 4 states and 122 transitions. [2024-06-28 00:52:51,760 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 54 places, 64 transitions, 295 flow [2024-06-28 00:52:51,763 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 52 places, 64 transitions, 278 flow, removed 2 selfloop flow, removed 2 redundant places. [2024-06-28 00:52:51,763 INFO L231 Difference]: Finished difference. Result has 54 places, 49 transitions, 180 flow [2024-06-28 00:52:51,764 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=45, PETRI_DIFFERENCE_MINUEND_FLOW=124, PETRI_DIFFERENCE_MINUEND_PLACES=49, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=43, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=37, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=180, PETRI_PLACES=54, PETRI_TRANSITIONS=49} [2024-06-28 00:52:51,765 INFO L281 CegarLoopForPetriNet]: 49 programPoint places, 5 predicate places. [2024-06-28 00:52:51,765 INFO L495 AbstractCegarLoop]: Abstraction has has 54 places, 49 transitions, 180 flow [2024-06-28 00:52:51,765 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 21.0) internal successors, (84), 4 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:52:51,765 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:52:51,765 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:52:51,765 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-06-28 00:52:51,765 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)] === [2024-06-28 00:52:51,766 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:52:51,766 INFO L85 PathProgramCache]: Analyzing trace with hash -576324553, now seen corresponding path program 1 times [2024-06-28 00:52:51,766 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:52:51,769 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1110212810] [2024-06-28 00:52:51,769 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:52:51,769 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:52:51,779 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:52:51,924 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:52:51,925 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:52:51,925 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1110212810] [2024-06-28 00:52:51,925 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1110212810] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:52:51,925 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:52:51,925 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-06-28 00:52:51,926 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [172996402] [2024-06-28 00:52:51,926 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:52:51,926 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-06-28 00:52:51,926 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:52:51,927 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-06-28 00:52:51,927 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2024-06-28 00:52:51,960 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 17 out of 45 [2024-06-28 00:52:51,961 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 54 places, 49 transitions, 180 flow. Second operand has 5 states, 5 states have (on average 18.8) internal successors, (94), 5 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:52:51,962 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:52:51,962 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 17 of 45 [2024-06-28 00:52:51,962 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:52:52,167 INFO L124 PetriNetUnfolderBase]: 1490/2417 cut-off events. [2024-06-28 00:52:52,168 INFO L125 PetriNetUnfolderBase]: For 1556/1556 co-relation queries the response was YES. [2024-06-28 00:52:52,172 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6166 conditions, 2417 events. 1490/2417 cut-off events. For 1556/1556 co-relation queries the response was YES. Maximal size of possible extension queue 143. Compared 13739 event pairs, 746 based on Foata normal form. 2/2408 useless extension candidates. Maximal degree in co-relation 6150. Up to 2172 conditions per place. [2024-06-28 00:52:52,182 INFO L140 encePairwiseOnDemand]: 37/45 looper letters, 56 selfloop transitions, 10 changer transitions 0/79 dead transitions. [2024-06-28 00:52:52,183 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 58 places, 79 transitions, 389 flow [2024-06-28 00:52:52,183 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-06-28 00:52:52,183 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-06-28 00:52:52,184 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 142 transitions. [2024-06-28 00:52:52,185 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6311111111111111 [2024-06-28 00:52:52,185 INFO L175 Difference]: Start difference. First operand has 54 places, 49 transitions, 180 flow. Second operand 5 states and 142 transitions. [2024-06-28 00:52:52,185 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 58 places, 79 transitions, 389 flow [2024-06-28 00:52:52,189 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 58 places, 79 transitions, 385 flow, removed 2 selfloop flow, removed 0 redundant places. [2024-06-28 00:52:52,190 INFO L231 Difference]: Finished difference. Result has 61 places, 58 transitions, 249 flow [2024-06-28 00:52:52,190 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=45, PETRI_DIFFERENCE_MINUEND_FLOW=176, PETRI_DIFFERENCE_MINUEND_PLACES=54, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=49, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=43, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=249, PETRI_PLACES=61, PETRI_TRANSITIONS=58} [2024-06-28 00:52:52,191 INFO L281 CegarLoopForPetriNet]: 49 programPoint places, 12 predicate places. [2024-06-28 00:52:52,192 INFO L495 AbstractCegarLoop]: Abstraction has has 61 places, 58 transitions, 249 flow [2024-06-28 00:52:52,192 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 18.8) internal successors, (94), 5 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:52:52,192 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:52:52,192 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:52:52,192 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-06-28 00:52:52,192 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 00:52:52,193 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:52:52,193 INFO L85 PathProgramCache]: Analyzing trace with hash -915541442, now seen corresponding path program 1 times [2024-06-28 00:52:52,193 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:52:52,193 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [572575031] [2024-06-28 00:52:52,193 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:52:52,193 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:52:52,200 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:52:52,341 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:52:52,341 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:52:52,341 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [572575031] [2024-06-28 00:52:52,342 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [572575031] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:52:52,342 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:52:52,342 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-06-28 00:52:52,342 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [42504691] [2024-06-28 00:52:52,342 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:52:52,343 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-06-28 00:52:52,343 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:52:52,343 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-06-28 00:52:52,343 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-06-28 00:52:52,383 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 18 out of 45 [2024-06-28 00:52:52,384 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 61 places, 58 transitions, 249 flow. Second operand has 6 states, 6 states have (on average 19.666666666666668) internal successors, (118), 6 states have internal predecessors, (118), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:52:52,384 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:52:52,384 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 18 of 45 [2024-06-28 00:52:52,384 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:52:52,599 INFO L124 PetriNetUnfolderBase]: 1495/2510 cut-off events. [2024-06-28 00:52:52,599 INFO L125 PetriNetUnfolderBase]: For 2799/2833 co-relation queries the response was YES. [2024-06-28 00:52:52,604 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7070 conditions, 2510 events. 1495/2510 cut-off events. For 2799/2833 co-relation queries the response was YES. Maximal size of possible extension queue 153. Compared 14544 event pairs, 468 based on Foata normal form. 15/2500 useless extension candidates. Maximal degree in co-relation 7049. Up to 2077 conditions per place. [2024-06-28 00:52:52,616 INFO L140 encePairwiseOnDemand]: 37/45 looper letters, 47 selfloop transitions, 14 changer transitions 0/78 dead transitions. [2024-06-28 00:52:52,616 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 64 places, 78 transitions, 431 flow [2024-06-28 00:52:52,616 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-06-28 00:52:52,617 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-06-28 00:52:52,617 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 123 transitions. [2024-06-28 00:52:52,617 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6833333333333333 [2024-06-28 00:52:52,617 INFO L175 Difference]: Start difference. First operand has 61 places, 58 transitions, 249 flow. Second operand 4 states and 123 transitions. [2024-06-28 00:52:52,617 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 64 places, 78 transitions, 431 flow [2024-06-28 00:52:52,624 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 64 places, 78 transitions, 431 flow, removed 0 selfloop flow, removed 0 redundant places. [2024-06-28 00:52:52,626 INFO L231 Difference]: Finished difference. Result has 65 places, 61 transitions, 313 flow [2024-06-28 00:52:52,626 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=45, PETRI_DIFFERENCE_MINUEND_FLOW=249, PETRI_DIFFERENCE_MINUEND_PLACES=61, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=58, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=44, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=313, PETRI_PLACES=65, PETRI_TRANSITIONS=61} [2024-06-28 00:52:52,628 INFO L281 CegarLoopForPetriNet]: 49 programPoint places, 16 predicate places. [2024-06-28 00:52:52,631 INFO L495 AbstractCegarLoop]: Abstraction has has 65 places, 61 transitions, 313 flow [2024-06-28 00:52:52,632 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 19.666666666666668) internal successors, (118), 6 states have internal predecessors, (118), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:52:52,632 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:52:52,632 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:52:52,632 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-06-28 00:52:52,632 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 00:52:52,632 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:52:52,632 INFO L85 PathProgramCache]: Analyzing trace with hash 569290814, now seen corresponding path program 2 times [2024-06-28 00:52:52,632 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:52:52,632 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1897407290] [2024-06-28 00:52:52,633 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:52:52,633 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:52:52,641 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:52:52,747 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:52:52,748 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:52:52,749 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1897407290] [2024-06-28 00:52:52,749 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1897407290] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:52:52,749 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:52:52,749 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-06-28 00:52:52,749 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [260509179] [2024-06-28 00:52:52,749 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:52:52,750 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-06-28 00:52:52,750 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:52:52,751 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-06-28 00:52:52,751 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2024-06-28 00:52:52,783 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 18 out of 45 [2024-06-28 00:52:52,783 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 65 places, 61 transitions, 313 flow. Second operand has 6 states, 6 states have (on average 19.666666666666668) internal successors, (118), 6 states have internal predecessors, (118), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:52:52,784 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:52:52,784 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 18 of 45 [2024-06-28 00:52:52,784 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:52:53,005 INFO L124 PetriNetUnfolderBase]: 1487/2499 cut-off events. [2024-06-28 00:52:53,006 INFO L125 PetriNetUnfolderBase]: For 4422/4465 co-relation queries the response was YES. [2024-06-28 00:52:53,011 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7773 conditions, 2499 events. 1487/2499 cut-off events. For 4422/4465 co-relation queries the response was YES. Maximal size of possible extension queue 153. Compared 14546 event pairs, 468 based on Foata normal form. 20/2495 useless extension candidates. Maximal degree in co-relation 7749. Up to 2046 conditions per place. [2024-06-28 00:52:53,025 INFO L140 encePairwiseOnDemand]: 37/45 looper letters, 53 selfloop transitions, 17 changer transitions 0/87 dead transitions. [2024-06-28 00:52:53,026 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 69 places, 87 transitions, 533 flow [2024-06-28 00:52:53,026 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-06-28 00:52:53,026 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-06-28 00:52:53,027 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 150 transitions. [2024-06-28 00:52:53,027 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6666666666666666 [2024-06-28 00:52:53,027 INFO L175 Difference]: Start difference. First operand has 65 places, 61 transitions, 313 flow. Second operand 5 states and 150 transitions. [2024-06-28 00:52:53,027 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 69 places, 87 transitions, 533 flow [2024-06-28 00:52:53,033 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 67 places, 87 transitions, 497 flow, removed 9 selfloop flow, removed 2 redundant places. [2024-06-28 00:52:53,036 INFO L231 Difference]: Finished difference. Result has 68 places, 64 transitions, 347 flow [2024-06-28 00:52:53,036 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=45, PETRI_DIFFERENCE_MINUEND_FLOW=281, PETRI_DIFFERENCE_MINUEND_PLACES=63, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=61, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=44, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=347, PETRI_PLACES=68, PETRI_TRANSITIONS=64} [2024-06-28 00:52:53,038 INFO L281 CegarLoopForPetriNet]: 49 programPoint places, 19 predicate places. [2024-06-28 00:52:53,038 INFO L495 AbstractCegarLoop]: Abstraction has has 68 places, 64 transitions, 347 flow [2024-06-28 00:52:53,039 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 19.666666666666668) internal successors, (118), 6 states have internal predecessors, (118), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:52:53,039 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:52:53,039 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:52:53,039 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-06-28 00:52:53,039 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 00:52:53,039 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:52:53,040 INFO L85 PathProgramCache]: Analyzing trace with hash 569291000, now seen corresponding path program 1 times [2024-06-28 00:52:53,040 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:52:53,043 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [514808480] [2024-06-28 00:52:53,043 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:52:53,043 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:52:53,052 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:52:53,174 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:52:53,175 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:52:53,175 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [514808480] [2024-06-28 00:52:53,175 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [514808480] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:52:53,175 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:52:53,175 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-06-28 00:52:53,175 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [468655570] [2024-06-28 00:52:53,176 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:52:53,176 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-06-28 00:52:53,176 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:52:53,176 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-06-28 00:52:53,176 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2024-06-28 00:52:53,216 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 17 out of 45 [2024-06-28 00:52:53,216 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 68 places, 64 transitions, 347 flow. Second operand has 6 states, 6 states have (on average 18.666666666666668) internal successors, (112), 6 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:52:53,217 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:52:53,217 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 17 of 45 [2024-06-28 00:52:53,217 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:52:53,487 INFO L124 PetriNetUnfolderBase]: 1631/2695 cut-off events. [2024-06-28 00:52:53,488 INFO L125 PetriNetUnfolderBase]: For 4418/4421 co-relation queries the response was YES. [2024-06-28 00:52:53,492 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8251 conditions, 2695 events. 1631/2695 cut-off events. For 4418/4421 co-relation queries the response was YES. Maximal size of possible extension queue 156. Compared 15777 event pairs, 493 based on Foata normal form. 8/2696 useless extension candidates. Maximal degree in co-relation 8226. Up to 2182 conditions per place. [2024-06-28 00:52:53,507 INFO L140 encePairwiseOnDemand]: 34/45 looper letters, 72 selfloop transitions, 27 changer transitions 0/112 dead transitions. [2024-06-28 00:52:53,507 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 74 places, 112 transitions, 711 flow [2024-06-28 00:52:53,507 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 00:52:53,508 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 00:52:53,508 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 200 transitions. [2024-06-28 00:52:53,509 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6349206349206349 [2024-06-28 00:52:53,509 INFO L175 Difference]: Start difference. First operand has 68 places, 64 transitions, 347 flow. Second operand 7 states and 200 transitions. [2024-06-28 00:52:53,509 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 74 places, 112 transitions, 711 flow [2024-06-28 00:52:53,514 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 71 places, 112 transitions, 669 flow, removed 6 selfloop flow, removed 3 redundant places. [2024-06-28 00:52:53,515 INFO L231 Difference]: Finished difference. Result has 74 places, 79 transitions, 472 flow [2024-06-28 00:52:53,515 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=45, PETRI_DIFFERENCE_MINUEND_FLOW=305, PETRI_DIFFERENCE_MINUEND_PLACES=65, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=64, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=15, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=44, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=472, PETRI_PLACES=74, PETRI_TRANSITIONS=79} [2024-06-28 00:52:53,516 INFO L281 CegarLoopForPetriNet]: 49 programPoint places, 25 predicate places. [2024-06-28 00:52:53,516 INFO L495 AbstractCegarLoop]: Abstraction has has 74 places, 79 transitions, 472 flow [2024-06-28 00:52:53,516 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 18.666666666666668) internal successors, (112), 6 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:52:53,517 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:52:53,517 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:52:53,517 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-06-28 00:52:53,517 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 00:52:53,517 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:52:53,518 INFO L85 PathProgramCache]: Analyzing trace with hash 202922710, now seen corresponding path program 2 times [2024-06-28 00:52:53,518 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:52:53,518 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [471734715] [2024-06-28 00:52:53,518 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:52:53,518 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:52:53,523 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:52:53,622 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:52:53,623 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:52:53,623 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [471734715] [2024-06-28 00:52:53,623 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [471734715] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:52:53,623 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:52:53,623 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-06-28 00:52:53,623 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [931063621] [2024-06-28 00:52:53,624 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:52:53,624 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-06-28 00:52:53,624 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:52:53,625 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-06-28 00:52:53,625 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2024-06-28 00:52:53,652 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 17 out of 45 [2024-06-28 00:52:53,653 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 74 places, 79 transitions, 472 flow. Second operand has 6 states, 6 states have (on average 18.666666666666668) internal successors, (112), 6 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:52:53,653 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:52:53,653 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 17 of 45 [2024-06-28 00:52:53,653 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:52:53,927 INFO L124 PetriNetUnfolderBase]: 1626/2714 cut-off events. [2024-06-28 00:52:53,927 INFO L125 PetriNetUnfolderBase]: For 6955/6958 co-relation queries the response was YES. [2024-06-28 00:52:53,933 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9678 conditions, 2714 events. 1626/2714 cut-off events. For 6955/6958 co-relation queries the response was YES. Maximal size of possible extension queue 159. Compared 16157 event pairs, 706 based on Foata normal form. 4/2685 useless extension candidates. Maximal degree in co-relation 9650. Up to 2294 conditions per place. [2024-06-28 00:52:53,945 INFO L140 encePairwiseOnDemand]: 36/45 looper letters, 84 selfloop transitions, 20 changer transitions 0/117 dead transitions. [2024-06-28 00:52:53,946 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 79 places, 117 transitions, 832 flow [2024-06-28 00:52:53,946 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-28 00:52:53,946 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-28 00:52:53,947 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 171 transitions. [2024-06-28 00:52:53,948 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6333333333333333 [2024-06-28 00:52:53,948 INFO L175 Difference]: Start difference. First operand has 74 places, 79 transitions, 472 flow. Second operand 6 states and 171 transitions. [2024-06-28 00:52:53,948 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 79 places, 117 transitions, 832 flow [2024-06-28 00:52:53,958 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 76 places, 117 transitions, 782 flow, removed 12 selfloop flow, removed 3 redundant places. [2024-06-28 00:52:53,962 INFO L231 Difference]: Finished difference. Result has 80 places, 90 transitions, 597 flow [2024-06-28 00:52:53,962 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=45, PETRI_DIFFERENCE_MINUEND_FLOW=434, PETRI_DIFFERENCE_MINUEND_PLACES=71, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=79, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=61, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=597, PETRI_PLACES=80, PETRI_TRANSITIONS=90} [2024-06-28 00:52:53,963 INFO L281 CegarLoopForPetriNet]: 49 programPoint places, 31 predicate places. [2024-06-28 00:52:53,964 INFO L495 AbstractCegarLoop]: Abstraction has has 80 places, 90 transitions, 597 flow [2024-06-28 00:52:53,964 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 18.666666666666668) internal successors, (112), 6 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:52:53,964 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:52:53,964 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:52:53,964 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-06-28 00:52:53,964 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 00:52:53,965 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:52:53,965 INFO L85 PathProgramCache]: Analyzing trace with hash 202931638, now seen corresponding path program 1 times [2024-06-28 00:52:53,965 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:52:53,965 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1726872375] [2024-06-28 00:52:53,965 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:52:53,965 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:52:53,971 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:52:54,074 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:52:54,074 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:52:54,074 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1726872375] [2024-06-28 00:52:54,075 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1726872375] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:52:54,075 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:52:54,075 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-06-28 00:52:54,075 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [550212349] [2024-06-28 00:52:54,075 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:52:54,075 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-06-28 00:52:54,076 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:52:54,076 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-06-28 00:52:54,076 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2024-06-28 00:52:54,101 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 17 out of 45 [2024-06-28 00:52:54,102 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 80 places, 90 transitions, 597 flow. Second operand has 6 states, 6 states have (on average 18.666666666666668) internal successors, (112), 6 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:52:54,102 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:52:54,102 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 17 of 45 [2024-06-28 00:52:54,102 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:52:54,352 INFO L124 PetriNetUnfolderBase]: 1618/2625 cut-off events. [2024-06-28 00:52:54,353 INFO L125 PetriNetUnfolderBase]: For 7973/7973 co-relation queries the response was YES. [2024-06-28 00:52:54,358 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9990 conditions, 2625 events. 1618/2625 cut-off events. For 7973/7973 co-relation queries the response was YES. Maximal size of possible extension queue 156. Compared 15146 event pairs, 451 based on Foata normal form. 4/2625 useless extension candidates. Maximal degree in co-relation 9958. Up to 2321 conditions per place. [2024-06-28 00:52:54,366 INFO L140 encePairwiseOnDemand]: 37/45 looper letters, 95 selfloop transitions, 12 changer transitions 0/120 dead transitions. [2024-06-28 00:52:54,367 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 85 places, 120 transitions, 895 flow [2024-06-28 00:52:54,367 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-28 00:52:54,367 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-28 00:52:54,368 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 168 transitions. [2024-06-28 00:52:54,368 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6222222222222222 [2024-06-28 00:52:54,368 INFO L175 Difference]: Start difference. First operand has 80 places, 90 transitions, 597 flow. Second operand 6 states and 168 transitions. [2024-06-28 00:52:54,368 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 85 places, 120 transitions, 895 flow [2024-06-28 00:52:54,379 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 85 places, 120 transitions, 877 flow, removed 9 selfloop flow, removed 0 redundant places. [2024-06-28 00:52:54,380 INFO L231 Difference]: Finished difference. Result has 86 places, 92 transitions, 632 flow [2024-06-28 00:52:54,381 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=45, PETRI_DIFFERENCE_MINUEND_FLOW=579, PETRI_DIFFERENCE_MINUEND_PLACES=80, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=90, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=78, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=632, PETRI_PLACES=86, PETRI_TRANSITIONS=92} [2024-06-28 00:52:54,382 INFO L281 CegarLoopForPetriNet]: 49 programPoint places, 37 predicate places. [2024-06-28 00:52:54,382 INFO L495 AbstractCegarLoop]: Abstraction has has 86 places, 92 transitions, 632 flow [2024-06-28 00:52:54,382 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 18.666666666666668) internal successors, (112), 6 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:52:54,382 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:52:54,382 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:52:54,382 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-06-28 00:52:54,382 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 00:52:54,383 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:52:54,383 INFO L85 PathProgramCache]: Analyzing trace with hash 2034838342, now seen corresponding path program 1 times [2024-06-28 00:52:54,383 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:52:54,384 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [437860928] [2024-06-28 00:52:54,384 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:52:54,384 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:52:54,389 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:52:54,495 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:52:54,495 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:52:54,495 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [437860928] [2024-06-28 00:52:54,496 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [437860928] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:52:54,496 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:52:54,496 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-28 00:52:54,496 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1459267319] [2024-06-28 00:52:54,496 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:52:54,496 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-28 00:52:54,497 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:52:54,497 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-28 00:52:54,497 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2024-06-28 00:52:54,534 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 17 out of 45 [2024-06-28 00:52:54,534 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 86 places, 92 transitions, 632 flow. Second operand has 7 states, 7 states have (on average 18.571428571428573) internal successors, (130), 7 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) [2024-06-28 00:52:54,534 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:52:54,534 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 17 of 45 [2024-06-28 00:52:54,534 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:52:54,832 INFO L124 PetriNetUnfolderBase]: 1872/3017 cut-off events. [2024-06-28 00:52:54,832 INFO L125 PetriNetUnfolderBase]: For 10343/10343 co-relation queries the response was YES. [2024-06-28 00:52:54,840 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11988 conditions, 3017 events. 1872/3017 cut-off events. For 10343/10343 co-relation queries the response was YES. Maximal size of possible extension queue 185. Compared 17765 event pairs, 388 based on Foata normal form. 4/3014 useless extension candidates. Maximal degree in co-relation 11953. Up to 2419 conditions per place. [2024-06-28 00:52:54,852 INFO L140 encePairwiseOnDemand]: 33/45 looper letters, 92 selfloop transitions, 51 changer transitions 0/156 dead transitions. [2024-06-28 00:52:54,852 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 91 places, 156 transitions, 1316 flow [2024-06-28 00:52:54,853 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-28 00:52:54,853 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-28 00:52:54,853 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 181 transitions. [2024-06-28 00:52:54,853 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6703703703703704 [2024-06-28 00:52:54,853 INFO L175 Difference]: Start difference. First operand has 86 places, 92 transitions, 632 flow. Second operand 6 states and 181 transitions. [2024-06-28 00:52:54,854 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 91 places, 156 transitions, 1316 flow [2024-06-28 00:52:54,871 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 87 places, 156 transitions, 1281 flow, removed 7 selfloop flow, removed 4 redundant places. [2024-06-28 00:52:54,873 INFO L231 Difference]: Finished difference. Result has 90 places, 126 transitions, 1090 flow [2024-06-28 00:52:54,873 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=45, PETRI_DIFFERENCE_MINUEND_FLOW=597, PETRI_DIFFERENCE_MINUEND_PLACES=82, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=92, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=20, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=47, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=1090, PETRI_PLACES=90, PETRI_TRANSITIONS=126} [2024-06-28 00:52:54,874 INFO L281 CegarLoopForPetriNet]: 49 programPoint places, 41 predicate places. [2024-06-28 00:52:54,874 INFO L495 AbstractCegarLoop]: Abstraction has has 90 places, 126 transitions, 1090 flow [2024-06-28 00:52:54,874 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 18.571428571428573) internal successors, (130), 7 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) [2024-06-28 00:52:54,874 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:52:54,874 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:52:54,874 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-06-28 00:52:54,874 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 00:52:54,875 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:52:54,875 INFO L85 PathProgramCache]: Analyzing trace with hash 1243905092, now seen corresponding path program 2 times [2024-06-28 00:52:54,875 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:52:54,875 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2114689677] [2024-06-28 00:52:54,875 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:52:54,875 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:52:54,880 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:52:54,974 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:52:54,974 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:52:54,974 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2114689677] [2024-06-28 00:52:54,975 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2114689677] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:52:54,975 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:52:54,975 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-28 00:52:54,975 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [427406004] [2024-06-28 00:52:54,975 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:52:54,975 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-28 00:52:54,976 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:52:54,976 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-28 00:52:54,976 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2024-06-28 00:52:55,006 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 17 out of 45 [2024-06-28 00:52:55,006 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 90 places, 126 transitions, 1090 flow. Second operand has 7 states, 7 states have (on average 18.571428571428573) internal successors, (130), 7 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) [2024-06-28 00:52:55,006 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:52:55,006 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 17 of 45 [2024-06-28 00:52:55,007 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:52:55,358 INFO L124 PetriNetUnfolderBase]: 2019/3310 cut-off events. [2024-06-28 00:52:55,359 INFO L125 PetriNetUnfolderBase]: For 16737/16737 co-relation queries the response was YES. [2024-06-28 00:52:55,368 INFO L83 FinitePrefix]: Finished finitePrefix Result has 14944 conditions, 3310 events. 2019/3310 cut-off events. For 16737/16737 co-relation queries the response was YES. Maximal size of possible extension queue 207. Compared 19954 event pairs, 410 based on Foata normal form. 4/3299 useless extension candidates. Maximal degree in co-relation 14906. Up to 2322 conditions per place. [2024-06-28 00:52:55,423 INFO L140 encePairwiseOnDemand]: 33/45 looper letters, 102 selfloop transitions, 77 changer transitions 0/192 dead transitions. [2024-06-28 00:52:55,424 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 98 places, 192 transitions, 1850 flow [2024-06-28 00:52:55,424 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 00:52:55,424 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 00:52:55,425 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 266 transitions. [2024-06-28 00:52:55,425 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6567901234567901 [2024-06-28 00:52:55,425 INFO L175 Difference]: Start difference. First operand has 90 places, 126 transitions, 1090 flow. Second operand 9 states and 266 transitions. [2024-06-28 00:52:55,425 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 98 places, 192 transitions, 1850 flow [2024-06-28 00:52:55,469 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 97 places, 192 transitions, 1820 flow, removed 11 selfloop flow, removed 1 redundant places. [2024-06-28 00:52:55,471 INFO L231 Difference]: Finished difference. Result has 99 places, 139 transitions, 1382 flow [2024-06-28 00:52:55,472 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=45, PETRI_DIFFERENCE_MINUEND_FLOW=1060, PETRI_DIFFERENCE_MINUEND_PLACES=89, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=126, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=67, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=56, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1382, PETRI_PLACES=99, PETRI_TRANSITIONS=139} [2024-06-28 00:52:55,472 INFO L281 CegarLoopForPetriNet]: 49 programPoint places, 50 predicate places. [2024-06-28 00:52:55,472 INFO L495 AbstractCegarLoop]: Abstraction has has 99 places, 139 transitions, 1382 flow [2024-06-28 00:52:55,472 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 18.571428571428573) internal successors, (130), 7 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) [2024-06-28 00:52:55,473 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:52:55,473 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:52:55,473 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2024-06-28 00:52:55,473 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 00:52:55,473 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:52:55,473 INFO L85 PathProgramCache]: Analyzing trace with hash 1243910672, now seen corresponding path program 3 times [2024-06-28 00:52:55,473 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:52:55,474 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2001415301] [2024-06-28 00:52:55,474 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:52:55,474 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:52:55,479 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:52:55,589 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:52:55,589 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:52:55,589 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2001415301] [2024-06-28 00:52:55,589 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2001415301] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:52:55,589 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:52:55,590 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-28 00:52:55,590 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1958153992] [2024-06-28 00:52:55,590 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:52:55,590 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-28 00:52:55,590 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:52:55,591 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-28 00:52:55,591 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2024-06-28 00:52:55,628 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 17 out of 45 [2024-06-28 00:52:55,628 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 99 places, 139 transitions, 1382 flow. Second operand has 7 states, 7 states have (on average 18.571428571428573) internal successors, (130), 7 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) [2024-06-28 00:52:55,628 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:52:55,628 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 17 of 45 [2024-06-28 00:52:55,628 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:52:56,038 INFO L124 PetriNetUnfolderBase]: 2038/3310 cut-off events. [2024-06-28 00:52:56,039 INFO L125 PetriNetUnfolderBase]: For 21568/21568 co-relation queries the response was YES. [2024-06-28 00:52:56,050 INFO L83 FinitePrefix]: Finished finitePrefix Result has 16609 conditions, 3310 events. 2038/3310 cut-off events. For 21568/21568 co-relation queries the response was YES. Maximal size of possible extension queue 213. Compared 19923 event pairs, 392 based on Foata normal form. 4/3307 useless extension candidates. Maximal degree in co-relation 16568. Up to 2345 conditions per place. [2024-06-28 00:52:56,068 INFO L140 encePairwiseOnDemand]: 33/45 looper letters, 89 selfloop transitions, 86 changer transitions 0/188 dead transitions. [2024-06-28 00:52:56,069 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 106 places, 188 transitions, 2049 flow [2024-06-28 00:52:56,069 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 00:52:56,069 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 00:52:56,070 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 234 transitions. [2024-06-28 00:52:56,070 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.65 [2024-06-28 00:52:56,070 INFO L175 Difference]: Start difference. First operand has 99 places, 139 transitions, 1382 flow. Second operand 8 states and 234 transitions. [2024-06-28 00:52:56,071 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 106 places, 188 transitions, 2049 flow [2024-06-28 00:52:56,126 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 102 places, 188 transitions, 1927 flow, removed 40 selfloop flow, removed 4 redundant places. [2024-06-28 00:52:56,131 INFO L231 Difference]: Finished difference. Result has 104 places, 148 transitions, 1591 flow [2024-06-28 00:52:56,131 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=45, PETRI_DIFFERENCE_MINUEND_FLOW=1270, PETRI_DIFFERENCE_MINUEND_PLACES=95, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=139, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=78, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=60, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=1591, PETRI_PLACES=104, PETRI_TRANSITIONS=148} [2024-06-28 00:52:56,132 INFO L281 CegarLoopForPetriNet]: 49 programPoint places, 55 predicate places. [2024-06-28 00:52:56,132 INFO L495 AbstractCegarLoop]: Abstraction has has 104 places, 148 transitions, 1591 flow [2024-06-28 00:52:56,132 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 18.571428571428573) internal successors, (130), 7 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) [2024-06-28 00:52:56,132 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:52:56,133 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:52:56,133 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2024-06-28 00:52:56,133 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 00:52:56,133 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:52:56,133 INFO L85 PathProgramCache]: Analyzing trace with hash 1995637930, now seen corresponding path program 4 times [2024-06-28 00:52:56,134 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:52:56,134 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1655161611] [2024-06-28 00:52:56,134 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:52:56,134 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:52:56,140 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:52:56,249 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:52:56,250 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:52:56,250 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1655161611] [2024-06-28 00:52:56,250 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1655161611] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:52:56,250 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:52:56,250 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-28 00:52:56,250 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [425677023] [2024-06-28 00:52:56,251 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:52:56,251 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-28 00:52:56,251 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:52:56,252 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-28 00:52:56,252 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2024-06-28 00:52:56,293 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 17 out of 45 [2024-06-28 00:52:56,293 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 104 places, 148 transitions, 1591 flow. Second operand has 7 states, 7 states have (on average 18.571428571428573) internal successors, (130), 7 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) [2024-06-28 00:52:56,294 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:52:56,294 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 17 of 45 [2024-06-28 00:52:56,294 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:52:56,637 INFO L124 PetriNetUnfolderBase]: 2033/3363 cut-off events. [2024-06-28 00:52:56,637 INFO L125 PetriNetUnfolderBase]: For 22770/22770 co-relation queries the response was YES. [2024-06-28 00:52:56,647 INFO L83 FinitePrefix]: Finished finitePrefix Result has 17166 conditions, 3363 events. 2033/3363 cut-off events. For 22770/22770 co-relation queries the response was YES. Maximal size of possible extension queue 210. Compared 20590 event pairs, 716 based on Foata normal form. 2/3326 useless extension candidates. Maximal degree in co-relation 17122. Up to 2722 conditions per place. [2024-06-28 00:52:56,663 INFO L140 encePairwiseOnDemand]: 35/45 looper letters, 143 selfloop transitions, 42 changer transitions 0/198 dead transitions. [2024-06-28 00:52:56,663 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 110 places, 198 transitions, 2235 flow [2024-06-28 00:52:56,664 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 00:52:56,664 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 00:52:56,664 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 200 transitions. [2024-06-28 00:52:56,664 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6349206349206349 [2024-06-28 00:52:56,664 INFO L175 Difference]: Start difference. First operand has 104 places, 148 transitions, 1591 flow. Second operand 7 states and 200 transitions. [2024-06-28 00:52:56,665 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 110 places, 198 transitions, 2235 flow [2024-06-28 00:52:56,740 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 107 places, 198 transitions, 2154 flow, removed 20 selfloop flow, removed 3 redundant places. [2024-06-28 00:52:56,743 INFO L231 Difference]: Finished difference. Result has 111 places, 165 transitions, 1872 flow [2024-06-28 00:52:56,743 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=45, PETRI_DIFFERENCE_MINUEND_FLOW=1527, PETRI_DIFFERENCE_MINUEND_PLACES=101, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=148, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=26, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=108, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=1872, PETRI_PLACES=111, PETRI_TRANSITIONS=165} [2024-06-28 00:52:56,744 INFO L281 CegarLoopForPetriNet]: 49 programPoint places, 62 predicate places. [2024-06-28 00:52:56,744 INFO L495 AbstractCegarLoop]: Abstraction has has 111 places, 165 transitions, 1872 flow [2024-06-28 00:52:56,744 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 18.571428571428573) internal successors, (130), 7 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) [2024-06-28 00:52:56,744 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:52:56,745 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:52:56,745 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2024-06-28 00:52:56,745 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)] === [2024-06-28 00:52:56,745 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:52:56,745 INFO L85 PathProgramCache]: Analyzing trace with hash -315812268, now seen corresponding path program 1 times [2024-06-28 00:52:56,745 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:52:56,746 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1103793307] [2024-06-28 00:52:56,746 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:52:56,746 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:52:56,751 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:52:56,841 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:52:56,841 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:52:56,842 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1103793307] [2024-06-28 00:52:56,842 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1103793307] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:52:56,842 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:52:56,842 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-06-28 00:52:56,842 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1954316483] [2024-06-28 00:52:56,842 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:52:56,842 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-06-28 00:52:56,843 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:52:56,843 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-06-28 00:52:56,843 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-06-28 00:52:56,864 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 18 out of 45 [2024-06-28 00:52:56,864 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 111 places, 165 transitions, 1872 flow. Second operand has 5 states, 5 states have (on average 20.4) internal successors, (102), 5 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:52:56,865 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:52:56,865 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 18 of 45 [2024-06-28 00:52:56,865 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:52:57,186 INFO L124 PetriNetUnfolderBase]: 1921/3203 cut-off events. [2024-06-28 00:52:57,186 INFO L125 PetriNetUnfolderBase]: For 25249/25276 co-relation queries the response was YES. [2024-06-28 00:52:57,196 INFO L83 FinitePrefix]: Finished finitePrefix Result has 17251 conditions, 3203 events. 1921/3203 cut-off events. For 25249/25276 co-relation queries the response was YES. Maximal size of possible extension queue 207. Compared 19736 event pairs, 712 based on Foata normal form. 29/3201 useless extension candidates. Maximal degree in co-relation 17202. Up to 2618 conditions per place. [2024-06-28 00:52:57,210 INFO L140 encePairwiseOnDemand]: 38/45 looper letters, 134 selfloop transitions, 16 changer transitions 0/178 dead transitions. [2024-06-28 00:52:57,210 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 114 places, 178 transitions, 2214 flow [2024-06-28 00:52:57,210 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-06-28 00:52:57,210 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-06-28 00:52:57,211 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 118 transitions. [2024-06-28 00:52:57,211 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6555555555555556 [2024-06-28 00:52:57,211 INFO L175 Difference]: Start difference. First operand has 111 places, 165 transitions, 1872 flow. Second operand 4 states and 118 transitions. [2024-06-28 00:52:57,211 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 114 places, 178 transitions, 2214 flow [2024-06-28 00:52:57,271 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 113 places, 178 transitions, 2136 flow, removed 37 selfloop flow, removed 1 redundant places. [2024-06-28 00:52:57,273 INFO L231 Difference]: Finished difference. Result has 114 places, 165 transitions, 1836 flow [2024-06-28 00:52:57,273 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=45, PETRI_DIFFERENCE_MINUEND_FLOW=1794, PETRI_DIFFERENCE_MINUEND_PLACES=110, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=165, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=16, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=149, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=1836, PETRI_PLACES=114, PETRI_TRANSITIONS=165} [2024-06-28 00:52:57,274 INFO L281 CegarLoopForPetriNet]: 49 programPoint places, 65 predicate places. [2024-06-28 00:52:57,274 INFO L495 AbstractCegarLoop]: Abstraction has has 114 places, 165 transitions, 1836 flow [2024-06-28 00:52:57,274 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 20.4) internal successors, (102), 5 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:52:57,274 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:52:57,274 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:52:57,275 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2024-06-28 00:52:57,275 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 00:52:57,275 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:52:57,275 INFO L85 PathProgramCache]: Analyzing trace with hash 1509517467, now seen corresponding path program 1 times [2024-06-28 00:52:57,275 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:52:57,275 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [447761221] [2024-06-28 00:52:57,276 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:52:57,276 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:52:57,280 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:52:57,379 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:52:57,380 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:52:57,380 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [447761221] [2024-06-28 00:52:57,380 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [447761221] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:52:57,380 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:52:57,380 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-28 00:52:57,380 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1733408311] [2024-06-28 00:52:57,381 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:52:57,381 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-28 00:52:57,381 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:52:57,381 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-28 00:52:57,381 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2024-06-28 00:52:57,459 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 18 out of 45 [2024-06-28 00:52:57,459 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 114 places, 165 transitions, 1836 flow. Second operand has 7 states, 7 states have (on average 19.571428571428573) internal successors, (137), 7 states have internal predecessors, (137), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:52:57,459 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:52:57,459 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 18 of 45 [2024-06-28 00:52:57,459 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:52:57,869 INFO L124 PetriNetUnfolderBase]: 2017/3388 cut-off events. [2024-06-28 00:52:57,869 INFO L125 PetriNetUnfolderBase]: For 31125/31376 co-relation queries the response was YES. [2024-06-28 00:52:57,880 INFO L83 FinitePrefix]: Finished finitePrefix Result has 18338 conditions, 3388 events. 2017/3388 cut-off events. For 31125/31376 co-relation queries the response was YES. Maximal size of possible extension queue 211. Compared 20823 event pairs, 309 based on Foata normal form. 72/3382 useless extension candidates. Maximal degree in co-relation 18286. Up to 2591 conditions per place. [2024-06-28 00:52:57,896 INFO L140 encePairwiseOnDemand]: 37/45 looper letters, 138 selfloop transitions, 33 changer transitions 0/202 dead transitions. [2024-06-28 00:52:57,896 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 119 places, 202 transitions, 2392 flow [2024-06-28 00:52:57,897 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-28 00:52:57,897 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-28 00:52:57,897 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 180 transitions. [2024-06-28 00:52:57,898 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6666666666666666 [2024-06-28 00:52:57,898 INFO L175 Difference]: Start difference. First operand has 114 places, 165 transitions, 1836 flow. Second operand 6 states and 180 transitions. [2024-06-28 00:52:57,898 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 119 places, 202 transitions, 2392 flow [2024-06-28 00:52:57,969 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 116 places, 202 transitions, 2360 flow, removed 0 selfloop flow, removed 3 redundant places. [2024-06-28 00:52:57,973 INFO L231 Difference]: Finished difference. Result has 117 places, 169 transitions, 1945 flow [2024-06-28 00:52:57,974 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=45, PETRI_DIFFERENCE_MINUEND_FLOW=1804, PETRI_DIFFERENCE_MINUEND_PLACES=111, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=165, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=31, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=134, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=1945, PETRI_PLACES=117, PETRI_TRANSITIONS=169} [2024-06-28 00:52:57,975 INFO L281 CegarLoopForPetriNet]: 49 programPoint places, 68 predicate places. [2024-06-28 00:52:57,975 INFO L495 AbstractCegarLoop]: Abstraction has has 117 places, 169 transitions, 1945 flow [2024-06-28 00:52:57,975 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 19.571428571428573) internal successors, (137), 7 states have internal predecessors, (137), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:52:57,975 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:52:57,975 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:52:57,976 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2024-06-28 00:52:57,976 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 00:52:57,976 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:52:57,976 INFO L85 PathProgramCache]: Analyzing trace with hash -1004784563, now seen corresponding path program 2 times [2024-06-28 00:52:57,976 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:52:57,978 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [837189021] [2024-06-28 00:52:57,978 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:52:57,978 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:52:57,984 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:52:58,113 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:52:58,114 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:52:58,114 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [837189021] [2024-06-28 00:52:58,115 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [837189021] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:52:58,115 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:52:58,116 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-28 00:52:58,116 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1560037511] [2024-06-28 00:52:58,116 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:52:58,116 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-28 00:52:58,117 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:52:58,117 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-28 00:52:58,117 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2024-06-28 00:52:58,152 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 18 out of 45 [2024-06-28 00:52:58,152 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 117 places, 169 transitions, 1945 flow. Second operand has 7 states, 7 states have (on average 19.571428571428573) internal successors, (137), 7 states have internal predecessors, (137), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:52:58,152 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:52:58,152 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 18 of 45 [2024-06-28 00:52:58,152 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:52:58,534 INFO L124 PetriNetUnfolderBase]: 1982/3229 cut-off events. [2024-06-28 00:52:58,534 INFO L125 PetriNetUnfolderBase]: For 32034/32215 co-relation queries the response was YES. [2024-06-28 00:52:58,547 INFO L83 FinitePrefix]: Finished finitePrefix Result has 18448 conditions, 3229 events. 1982/3229 cut-off events. For 32034/32215 co-relation queries the response was YES. Maximal size of possible extension queue 211. Compared 19415 event pairs, 344 based on Foata normal form. 16/3168 useless extension candidates. Maximal degree in co-relation 18395. Up to 2625 conditions per place. [2024-06-28 00:52:58,566 INFO L140 encePairwiseOnDemand]: 37/45 looper letters, 133 selfloop transitions, 29 changer transitions 0/193 dead transitions. [2024-06-28 00:52:58,566 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 121 places, 193 transitions, 2349 flow [2024-06-28 00:52:58,567 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-06-28 00:52:58,567 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-06-28 00:52:58,567 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 150 transitions. [2024-06-28 00:52:58,568 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6666666666666666 [2024-06-28 00:52:58,568 INFO L175 Difference]: Start difference. First operand has 117 places, 169 transitions, 1945 flow. Second operand 5 states and 150 transitions. [2024-06-28 00:52:58,568 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 121 places, 193 transitions, 2349 flow [2024-06-28 00:52:58,646 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 119 places, 193 transitions, 2283 flow, removed 17 selfloop flow, removed 2 redundant places. [2024-06-28 00:52:58,648 INFO L231 Difference]: Finished difference. Result has 120 places, 169 transitions, 1946 flow [2024-06-28 00:52:58,649 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=45, PETRI_DIFFERENCE_MINUEND_FLOW=1879, PETRI_DIFFERENCE_MINUEND_PLACES=115, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=169, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=29, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=140, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=1946, PETRI_PLACES=120, PETRI_TRANSITIONS=169} [2024-06-28 00:52:58,649 INFO L281 CegarLoopForPetriNet]: 49 programPoint places, 71 predicate places. [2024-06-28 00:52:58,649 INFO L495 AbstractCegarLoop]: Abstraction has has 120 places, 169 transitions, 1946 flow [2024-06-28 00:52:58,650 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 19.571428571428573) internal successors, (137), 7 states have internal predecessors, (137), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:52:58,650 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:52:58,650 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:52:58,650 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2024-06-28 00:52:58,650 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 00:52:58,650 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:52:58,651 INFO L85 PathProgramCache]: Analyzing trace with hash 1627665597, now seen corresponding path program 3 times [2024-06-28 00:52:58,651 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:52:58,651 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1415397737] [2024-06-28 00:52:58,651 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:52:58,651 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:52:58,656 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:52:58,760 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:52:58,760 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:52:58,760 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1415397737] [2024-06-28 00:52:58,760 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1415397737] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:52:58,760 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:52:58,760 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-28 00:52:58,761 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1527524423] [2024-06-28 00:52:58,761 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:52:58,761 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-28 00:52:58,761 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:52:58,762 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-28 00:52:58,762 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2024-06-28 00:52:58,797 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 18 out of 45 [2024-06-28 00:52:58,797 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 120 places, 169 transitions, 1946 flow. Second operand has 7 states, 7 states have (on average 19.571428571428573) internal successors, (137), 7 states have internal predecessors, (137), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:52:58,798 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:52:58,798 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 18 of 45 [2024-06-28 00:52:58,798 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:52:59,196 INFO L124 PetriNetUnfolderBase]: 1988/3340 cut-off events. [2024-06-28 00:52:59,196 INFO L125 PetriNetUnfolderBase]: For 34697/34943 co-relation queries the response was YES. [2024-06-28 00:52:59,209 INFO L83 FinitePrefix]: Finished finitePrefix Result has 18573 conditions, 3340 events. 1988/3340 cut-off events. For 34697/34943 co-relation queries the response was YES. Maximal size of possible extension queue 207. Compared 20532 event pairs, 405 based on Foata normal form. 60/3320 useless extension candidates. Maximal degree in co-relation 18518. Up to 2615 conditions per place. [2024-06-28 00:52:59,227 INFO L140 encePairwiseOnDemand]: 37/45 looper letters, 136 selfloop transitions, 34 changer transitions 0/201 dead transitions. [2024-06-28 00:52:59,227 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 125 places, 201 transitions, 2416 flow [2024-06-28 00:52:59,228 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-28 00:52:59,228 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-28 00:52:59,229 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 177 transitions. [2024-06-28 00:52:59,229 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6555555555555556 [2024-06-28 00:52:59,229 INFO L175 Difference]: Start difference. First operand has 120 places, 169 transitions, 1946 flow. Second operand 6 states and 177 transitions. [2024-06-28 00:52:59,229 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 125 places, 201 transitions, 2416 flow [2024-06-28 00:52:59,301 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 121 places, 201 transitions, 2352 flow, removed 1 selfloop flow, removed 4 redundant places. [2024-06-28 00:52:59,304 INFO L231 Difference]: Finished difference. Result has 122 places, 171 transitions, 1998 flow [2024-06-28 00:52:59,304 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=45, PETRI_DIFFERENCE_MINUEND_FLOW=1882, PETRI_DIFFERENCE_MINUEND_PLACES=116, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=169, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=32, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=135, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=1998, PETRI_PLACES=122, PETRI_TRANSITIONS=171} [2024-06-28 00:52:59,305 INFO L281 CegarLoopForPetriNet]: 49 programPoint places, 73 predicate places. [2024-06-28 00:52:59,305 INFO L495 AbstractCegarLoop]: Abstraction has has 122 places, 171 transitions, 1998 flow [2024-06-28 00:52:59,305 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 19.571428571428573) internal successors, (137), 7 states have internal predecessors, (137), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:52:59,305 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:52:59,305 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:52:59,305 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2024-06-28 00:52:59,306 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 00:52:59,306 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:52:59,306 INFO L85 PathProgramCache]: Analyzing trace with hash 1627850295, now seen corresponding path program 1 times [2024-06-28 00:52:59,306 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:52:59,306 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1311893298] [2024-06-28 00:52:59,306 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:52:59,307 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:52:59,314 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:52:59,423 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:52:59,424 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:52:59,424 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1311893298] [2024-06-28 00:52:59,424 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1311893298] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:52:59,424 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:52:59,424 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-28 00:52:59,425 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [411255221] [2024-06-28 00:52:59,425 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:52:59,425 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-28 00:52:59,425 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:52:59,426 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-28 00:52:59,427 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2024-06-28 00:52:59,466 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 17 out of 45 [2024-06-28 00:52:59,466 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 122 places, 171 transitions, 1998 flow. Second operand has 7 states, 7 states have (on average 18.571428571428573) internal successors, (130), 7 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) [2024-06-28 00:52:59,467 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:52:59,467 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 17 of 45 [2024-06-28 00:52:59,467 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:52:59,923 INFO L124 PetriNetUnfolderBase]: 2312/3700 cut-off events. [2024-06-28 00:52:59,923 INFO L125 PetriNetUnfolderBase]: For 37105/37114 co-relation queries the response was YES. [2024-06-28 00:52:59,935 INFO L83 FinitePrefix]: Finished finitePrefix Result has 20686 conditions, 3700 events. 2312/3700 cut-off events. For 37105/37114 co-relation queries the response was YES. Maximal size of possible extension queue 235. Compared 22290 event pairs, 375 based on Foata normal form. 30/3726 useless extension candidates. Maximal degree in co-relation 20630. Up to 2783 conditions per place. [2024-06-28 00:52:59,952 INFO L140 encePairwiseOnDemand]: 34/45 looper letters, 146 selfloop transitions, 56 changer transitions 0/215 dead transitions. [2024-06-28 00:52:59,952 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 129 places, 215 transitions, 2622 flow [2024-06-28 00:52:59,952 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 00:52:59,952 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 00:52:59,953 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 230 transitions. [2024-06-28 00:52:59,953 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6388888888888888 [2024-06-28 00:52:59,953 INFO L175 Difference]: Start difference. First operand has 122 places, 171 transitions, 1998 flow. Second operand 8 states and 230 transitions. [2024-06-28 00:52:59,953 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 129 places, 215 transitions, 2622 flow [2024-06-28 00:53:00,029 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 125 places, 215 transitions, 2536 flow, removed 11 selfloop flow, removed 4 redundant places. [2024-06-28 00:53:00,033 INFO L231 Difference]: Finished difference. Result has 126 places, 175 transitions, 2109 flow [2024-06-28 00:53:00,033 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=45, PETRI_DIFFERENCE_MINUEND_FLOW=1912, PETRI_DIFFERENCE_MINUEND_PLACES=118, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=171, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=52, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=115, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=2109, PETRI_PLACES=126, PETRI_TRANSITIONS=175} [2024-06-28 00:53:00,034 INFO L281 CegarLoopForPetriNet]: 49 programPoint places, 77 predicate places. [2024-06-28 00:53:00,034 INFO L495 AbstractCegarLoop]: Abstraction has has 126 places, 175 transitions, 2109 flow [2024-06-28 00:53:00,034 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 18.571428571428573) internal successors, (130), 7 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) [2024-06-28 00:53:00,034 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:53:00,034 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:53:00,035 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2024-06-28 00:53:00,035 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 00:53:00,035 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:53:00,035 INFO L85 PathProgramCache]: Analyzing trace with hash 1743516087, now seen corresponding path program 2 times [2024-06-28 00:53:00,035 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:53:00,035 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [161502862] [2024-06-28 00:53:00,036 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:53:00,036 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:53:00,044 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:53:00,165 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:53:00,165 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:53:00,165 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [161502862] [2024-06-28 00:53:00,165 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [161502862] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:53:00,166 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:53:00,166 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-28 00:53:00,166 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [726436592] [2024-06-28 00:53:00,166 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:53:00,167 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-28 00:53:00,167 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:53:00,168 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-28 00:53:00,168 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2024-06-28 00:53:00,196 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 17 out of 45 [2024-06-28 00:53:00,196 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 126 places, 175 transitions, 2109 flow. Second operand has 7 states, 7 states have (on average 18.571428571428573) internal successors, (130), 7 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) [2024-06-28 00:53:00,196 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:53:00,196 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 17 of 45 [2024-06-28 00:53:00,196 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:53:00,584 INFO L124 PetriNetUnfolderBase]: 2339/3737 cut-off events. [2024-06-28 00:53:00,584 INFO L125 PetriNetUnfolderBase]: For 38660/38669 co-relation queries the response was YES. [2024-06-28 00:53:00,598 INFO L83 FinitePrefix]: Finished finitePrefix Result has 21722 conditions, 3737 events. 2339/3737 cut-off events. For 38660/38669 co-relation queries the response was YES. Maximal size of possible extension queue 237. Compared 22510 event pairs, 419 based on Foata normal form. 10/3741 useless extension candidates. Maximal degree in co-relation 21665. Up to 3272 conditions per place. [2024-06-28 00:53:00,614 INFO L140 encePairwiseOnDemand]: 36/45 looper letters, 170 selfloop transitions, 28 changer transitions 0/211 dead transitions. [2024-06-28 00:53:00,614 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 132 places, 211 transitions, 2613 flow [2024-06-28 00:53:00,615 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 00:53:00,615 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 00:53:00,615 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 197 transitions. [2024-06-28 00:53:00,615 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6253968253968254 [2024-06-28 00:53:00,616 INFO L175 Difference]: Start difference. First operand has 126 places, 175 transitions, 2109 flow. Second operand 7 states and 197 transitions. [2024-06-28 00:53:00,616 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 132 places, 211 transitions, 2613 flow [2024-06-28 00:53:00,724 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 126 places, 211 transitions, 2470 flow, removed 22 selfloop flow, removed 6 redundant places. [2024-06-28 00:53:00,726 INFO L231 Difference]: Finished difference. Result has 127 places, 177 transitions, 2061 flow [2024-06-28 00:53:00,726 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=45, PETRI_DIFFERENCE_MINUEND_FLOW=1966, PETRI_DIFFERENCE_MINUEND_PLACES=120, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=175, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=26, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=147, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=2061, PETRI_PLACES=127, PETRI_TRANSITIONS=177} [2024-06-28 00:53:00,727 INFO L281 CegarLoopForPetriNet]: 49 programPoint places, 78 predicate places. [2024-06-28 00:53:00,727 INFO L495 AbstractCegarLoop]: Abstraction has has 127 places, 177 transitions, 2061 flow [2024-06-28 00:53:00,728 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 18.571428571428573) internal successors, (130), 7 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) [2024-06-28 00:53:00,728 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:53:00,728 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:53:00,728 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2024-06-28 00:53:00,731 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 00:53:00,731 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:53:00,731 INFO L85 PathProgramCache]: Analyzing trace with hash 1743812757, now seen corresponding path program 3 times [2024-06-28 00:53:00,731 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:53:00,731 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [818075120] [2024-06-28 00:53:00,732 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:53:00,732 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:53:00,736 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:53:00,826 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:53:00,826 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:53:00,826 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [818075120] [2024-06-28 00:53:00,826 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [818075120] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:53:00,827 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:53:00,827 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-28 00:53:00,827 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [708820791] [2024-06-28 00:53:00,827 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:53:00,828 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-28 00:53:00,829 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:53:00,829 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-28 00:53:00,829 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2024-06-28 00:53:00,862 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 17 out of 45 [2024-06-28 00:53:00,864 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 127 places, 177 transitions, 2061 flow. Second operand has 7 states, 7 states have (on average 18.571428571428573) internal successors, (130), 7 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) [2024-06-28 00:53:00,864 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:53:00,864 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 17 of 45 [2024-06-28 00:53:00,864 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:53:01,288 INFO L124 PetriNetUnfolderBase]: 2331/3782 cut-off events. [2024-06-28 00:53:01,288 INFO L125 PetriNetUnfolderBase]: For 39754/39763 co-relation queries the response was YES. [2024-06-28 00:53:01,303 INFO L83 FinitePrefix]: Finished finitePrefix Result has 21199 conditions, 3782 events. 2331/3782 cut-off events. For 39754/39763 co-relation queries the response was YES. Maximal size of possible extension queue 236. Compared 23072 event pairs, 436 based on Foata normal form. 10/3782 useless extension candidates. Maximal degree in co-relation 21141. Up to 3168 conditions per place. [2024-06-28 00:53:01,319 INFO L140 encePairwiseOnDemand]: 36/45 looper letters, 169 selfloop transitions, 33 changer transitions 0/215 dead transitions. [2024-06-28 00:53:01,320 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 133 places, 215 transitions, 2587 flow [2024-06-28 00:53:01,321 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 00:53:01,321 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 00:53:01,321 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 198 transitions. [2024-06-28 00:53:01,322 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6285714285714286 [2024-06-28 00:53:01,322 INFO L175 Difference]: Start difference. First operand has 127 places, 177 transitions, 2061 flow. Second operand 7 states and 198 transitions. [2024-06-28 00:53:01,322 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 133 places, 215 transitions, 2587 flow [2024-06-28 00:53:01,405 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 128 places, 215 transitions, 2510 flow, removed 12 selfloop flow, removed 5 redundant places. [2024-06-28 00:53:01,409 INFO L231 Difference]: Finished difference. Result has 130 places, 180 transitions, 2113 flow [2024-06-28 00:53:01,409 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=45, PETRI_DIFFERENCE_MINUEND_FLOW=1984, PETRI_DIFFERENCE_MINUEND_PLACES=122, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=177, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=30, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=144, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=2113, PETRI_PLACES=130, PETRI_TRANSITIONS=180} [2024-06-28 00:53:01,409 INFO L281 CegarLoopForPetriNet]: 49 programPoint places, 81 predicate places. [2024-06-28 00:53:01,409 INFO L495 AbstractCegarLoop]: Abstraction has has 130 places, 180 transitions, 2113 flow [2024-06-28 00:53:01,409 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 18.571428571428573) internal successors, (130), 7 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) [2024-06-28 00:53:01,409 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:53:01,409 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:53:01,410 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2024-06-28 00:53:01,410 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 00:53:01,410 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:53:01,410 INFO L85 PathProgramCache]: Analyzing trace with hash -449597377, now seen corresponding path program 1 times [2024-06-28 00:53:01,410 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:53:01,410 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1929879067] [2024-06-28 00:53:01,411 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:53:01,411 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:53:01,418 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:53:01,516 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:53:01,516 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:53:01,516 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1929879067] [2024-06-28 00:53:01,516 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1929879067] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:53:01,517 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:53:01,517 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 00:53:01,517 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1657485591] [2024-06-28 00:53:01,517 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:53:01,517 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 00:53:01,518 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:53:01,518 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 00:53:01,518 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2024-06-28 00:53:01,549 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 17 out of 45 [2024-06-28 00:53:01,549 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 130 places, 180 transitions, 2113 flow. Second operand has 8 states, 8 states have (on average 18.5) internal successors, (148), 8 states have internal predecessors, (148), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:53:01,549 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:53:01,549 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 17 of 45 [2024-06-28 00:53:01,549 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:53:02,352 INFO L124 PetriNetUnfolderBase]: 4102/6653 cut-off events. [2024-06-28 00:53:02,353 INFO L125 PetriNetUnfolderBase]: For 88735/88735 co-relation queries the response was YES. [2024-06-28 00:53:02,376 INFO L83 FinitePrefix]: Finished finitePrefix Result has 35801 conditions, 6653 events. 4102/6653 cut-off events. For 88735/88735 co-relation queries the response was YES. Maximal size of possible extension queue 447. Compared 46008 event pairs, 497 based on Foata normal form. 54/6700 useless extension candidates. Maximal degree in co-relation 35741. Up to 3147 conditions per place. [2024-06-28 00:53:02,404 INFO L140 encePairwiseOnDemand]: 33/45 looper letters, 185 selfloop transitions, 68 changer transitions 0/266 dead transitions. [2024-06-28 00:53:02,404 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 137 places, 266 transitions, 3348 flow [2024-06-28 00:53:02,405 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 00:53:02,405 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 00:53:02,405 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 255 transitions. [2024-06-28 00:53:02,405 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.7083333333333334 [2024-06-28 00:53:02,405 INFO L175 Difference]: Start difference. First operand has 130 places, 180 transitions, 2113 flow. Second operand 8 states and 255 transitions. [2024-06-28 00:53:02,405 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 137 places, 266 transitions, 3348 flow [2024-06-28 00:53:02,572 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 133 places, 266 transitions, 3257 flow, removed 18 selfloop flow, removed 4 redundant places. [2024-06-28 00:53:02,575 INFO L231 Difference]: Finished difference. Result has 136 places, 199 transitions, 2509 flow [2024-06-28 00:53:02,575 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=45, PETRI_DIFFERENCE_MINUEND_FLOW=2028, PETRI_DIFFERENCE_MINUEND_PLACES=126, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=180, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=53, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=118, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=2509, PETRI_PLACES=136, PETRI_TRANSITIONS=199} [2024-06-28 00:53:02,576 INFO L281 CegarLoopForPetriNet]: 49 programPoint places, 87 predicate places. [2024-06-28 00:53:02,576 INFO L495 AbstractCegarLoop]: Abstraction has has 136 places, 199 transitions, 2509 flow [2024-06-28 00:53:02,576 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 18.5) internal successors, (148), 8 states have internal predecessors, (148), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:53:02,576 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:53:02,576 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:53:02,576 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2024-06-28 00:53:02,576 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 00:53:02,577 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:53:02,577 INFO L85 PathProgramCache]: Analyzing trace with hash -1083401109, now seen corresponding path program 2 times [2024-06-28 00:53:02,577 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:53:02,577 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [435920385] [2024-06-28 00:53:02,577 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:53:02,577 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:53:02,581 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:53:02,682 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:53:02,682 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:53:02,682 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [435920385] [2024-06-28 00:53:02,682 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [435920385] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:53:02,682 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:53:02,682 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 00:53:02,683 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1554472135] [2024-06-28 00:53:02,683 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:53:02,683 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 00:53:02,683 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:53:02,684 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 00:53:02,684 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2024-06-28 00:53:02,722 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 17 out of 45 [2024-06-28 00:53:02,722 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 136 places, 199 transitions, 2509 flow. Second operand has 8 states, 8 states have (on average 18.5) internal successors, (148), 8 states have internal predecessors, (148), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:53:02,722 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:53:02,722 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 17 of 45 [2024-06-28 00:53:02,723 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:53:03,611 INFO L124 PetriNetUnfolderBase]: 4405/7200 cut-off events. [2024-06-28 00:53:03,611 INFO L125 PetriNetUnfolderBase]: For 104856/104856 co-relation queries the response was YES. [2024-06-28 00:53:03,643 INFO L83 FinitePrefix]: Finished finitePrefix Result has 39903 conditions, 7200 events. 4405/7200 cut-off events. For 104856/104856 co-relation queries the response was YES. Maximal size of possible extension queue 490. Compared 51145 event pairs, 1066 based on Foata normal form. 50/7231 useless extension candidates. Maximal degree in co-relation 39840. Up to 5526 conditions per place. [2024-06-28 00:53:03,677 INFO L140 encePairwiseOnDemand]: 33/45 looper letters, 162 selfloop transitions, 66 changer transitions 0/241 dead transitions. [2024-06-28 00:53:03,677 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 142 places, 241 transitions, 3192 flow [2024-06-28 00:53:03,678 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 00:53:03,678 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 00:53:03,680 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 213 transitions. [2024-06-28 00:53:03,680 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6761904761904762 [2024-06-28 00:53:03,680 INFO L175 Difference]: Start difference. First operand has 136 places, 199 transitions, 2509 flow. Second operand 7 states and 213 transitions. [2024-06-28 00:53:03,680 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 142 places, 241 transitions, 3192 flow [2024-06-28 00:53:04,007 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 139 places, 241 transitions, 3021 flow, removed 57 selfloop flow, removed 3 redundant places. [2024-06-28 00:53:04,011 INFO L231 Difference]: Finished difference. Result has 140 places, 202 transitions, 2555 flow [2024-06-28 00:53:04,011 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=45, PETRI_DIFFERENCE_MINUEND_FLOW=2342, PETRI_DIFFERENCE_MINUEND_PLACES=133, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=199, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=63, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=133, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=2555, PETRI_PLACES=140, PETRI_TRANSITIONS=202} [2024-06-28 00:53:04,011 INFO L281 CegarLoopForPetriNet]: 49 programPoint places, 91 predicate places. [2024-06-28 00:53:04,011 INFO L495 AbstractCegarLoop]: Abstraction has has 140 places, 202 transitions, 2555 flow [2024-06-28 00:53:04,012 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 18.5) internal successors, (148), 8 states have internal predecessors, (148), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:53:04,012 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:53:04,012 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:53:04,012 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2024-06-28 00:53:04,012 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 00:53:04,012 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:53:04,012 INFO L85 PathProgramCache]: Analyzing trace with hash -1083548979, now seen corresponding path program 3 times [2024-06-28 00:53:04,012 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:53:04,012 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1429499659] [2024-06-28 00:53:04,012 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:53:04,013 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:53:04,017 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:53:04,126 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:53:04,126 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:53:04,126 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1429499659] [2024-06-28 00:53:04,127 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1429499659] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:53:04,127 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:53:04,127 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 00:53:04,128 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1450017143] [2024-06-28 00:53:04,128 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:53:04,129 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 00:53:04,130 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:53:04,130 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 00:53:04,130 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2024-06-28 00:53:04,173 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 17 out of 45 [2024-06-28 00:53:04,174 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 140 places, 202 transitions, 2555 flow. Second operand has 8 states, 8 states have (on average 18.5) internal successors, (148), 8 states have internal predecessors, (148), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:53:04,174 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:53:04,174 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 17 of 45 [2024-06-28 00:53:04,174 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:53:05,175 INFO L124 PetriNetUnfolderBase]: 4660/7591 cut-off events. [2024-06-28 00:53:05,175 INFO L125 PetriNetUnfolderBase]: For 103987/103987 co-relation queries the response was YES. [2024-06-28 00:53:05,208 INFO L83 FinitePrefix]: Finished finitePrefix Result has 40735 conditions, 7591 events. 4660/7591 cut-off events. For 103987/103987 co-relation queries the response was YES. Maximal size of possible extension queue 521. Compared 54446 event pairs, 978 based on Foata normal form. 54/7638 useless extension candidates. Maximal degree in co-relation 40670. Up to 4516 conditions per place. [2024-06-28 00:53:05,345 INFO L140 encePairwiseOnDemand]: 33/45 looper letters, 181 selfloop transitions, 64 changer transitions 0/258 dead transitions. [2024-06-28 00:53:05,345 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 146 places, 258 transitions, 3475 flow [2024-06-28 00:53:05,345 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 00:53:05,346 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 00:53:05,346 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 218 transitions. [2024-06-28 00:53:05,346 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.692063492063492 [2024-06-28 00:53:05,346 INFO L175 Difference]: Start difference. First operand has 140 places, 202 transitions, 2555 flow. Second operand 7 states and 218 transitions. [2024-06-28 00:53:05,346 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 146 places, 258 transitions, 3475 flow [2024-06-28 00:53:05,590 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 141 places, 258 transitions, 3327 flow, removed 17 selfloop flow, removed 5 redundant places. [2024-06-28 00:53:05,593 INFO L231 Difference]: Finished difference. Result has 143 places, 211 transitions, 2753 flow [2024-06-28 00:53:05,593 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=45, PETRI_DIFFERENCE_MINUEND_FLOW=2407, PETRI_DIFFERENCE_MINUEND_PLACES=135, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=202, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=58, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=141, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=2753, PETRI_PLACES=143, PETRI_TRANSITIONS=211} [2024-06-28 00:53:05,594 INFO L281 CegarLoopForPetriNet]: 49 programPoint places, 94 predicate places. [2024-06-28 00:53:05,594 INFO L495 AbstractCegarLoop]: Abstraction has has 143 places, 211 transitions, 2753 flow [2024-06-28 00:53:05,594 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 18.5) internal successors, (148), 8 states have internal predecessors, (148), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:53:05,594 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:53:05,594 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:53:05,594 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2024-06-28 00:53:05,594 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 00:53:05,594 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:53:05,595 INFO L85 PathProgramCache]: Analyzing trace with hash -1081824773, now seen corresponding path program 4 times [2024-06-28 00:53:05,595 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:53:05,595 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1569568693] [2024-06-28 00:53:05,595 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:53:05,595 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:53:05,599 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:53:05,697 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:53:05,698 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:53:05,698 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1569568693] [2024-06-28 00:53:05,698 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1569568693] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:53:05,698 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:53:05,698 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 00:53:05,698 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2014934176] [2024-06-28 00:53:05,698 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:53:05,699 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 00:53:05,699 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:53:05,699 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 00:53:05,699 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2024-06-28 00:53:05,767 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 17 out of 45 [2024-06-28 00:53:05,768 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 143 places, 211 transitions, 2753 flow. Second operand has 8 states, 8 states have (on average 18.5) internal successors, (148), 8 states have internal predecessors, (148), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:53:05,768 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:53:05,768 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 17 of 45 [2024-06-28 00:53:05,768 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:53:06,703 INFO L124 PetriNetUnfolderBase]: 5021/8200 cut-off events. [2024-06-28 00:53:06,703 INFO L125 PetriNetUnfolderBase]: For 117684/117684 co-relation queries the response was YES. [2024-06-28 00:53:06,741 INFO L83 FinitePrefix]: Finished finitePrefix Result has 44111 conditions, 8200 events. 5021/8200 cut-off events. For 117684/117684 co-relation queries the response was YES. Maximal size of possible extension queue 563. Compared 59920 event pairs, 1390 based on Foata normal form. 50/8243 useless extension candidates. Maximal degree in co-relation 44044. Up to 6468 conditions per place. [2024-06-28 00:53:06,774 INFO L140 encePairwiseOnDemand]: 33/45 looper letters, 160 selfloop transitions, 97 changer transitions 0/270 dead transitions. [2024-06-28 00:53:06,774 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 152 places, 270 transitions, 3581 flow [2024-06-28 00:53:06,781 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 00:53:06,781 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 00:53:06,782 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 295 transitions. [2024-06-28 00:53:06,782 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6555555555555556 [2024-06-28 00:53:06,782 INFO L175 Difference]: Start difference. First operand has 143 places, 211 transitions, 2753 flow. Second operand 10 states and 295 transitions. [2024-06-28 00:53:06,782 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 152 places, 270 transitions, 3581 flow [2024-06-28 00:53:07,239 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 149 places, 270 transitions, 3446 flow, removed 39 selfloop flow, removed 3 redundant places. [2024-06-28 00:53:07,243 INFO L231 Difference]: Finished difference. Result has 150 places, 213 transitions, 2883 flow [2024-06-28 00:53:07,243 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=45, PETRI_DIFFERENCE_MINUEND_FLOW=2618, PETRI_DIFFERENCE_MINUEND_PLACES=140, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=211, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=95, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=114, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2883, PETRI_PLACES=150, PETRI_TRANSITIONS=213} [2024-06-28 00:53:07,243 INFO L281 CegarLoopForPetriNet]: 49 programPoint places, 101 predicate places. [2024-06-28 00:53:07,244 INFO L495 AbstractCegarLoop]: Abstraction has has 150 places, 213 transitions, 2883 flow [2024-06-28 00:53:07,244 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 18.5) internal successors, (148), 8 states have internal predecessors, (148), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:53:07,244 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:53:07,244 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:53:07,244 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2024-06-28 00:53:07,244 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 00:53:07,245 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:53:07,245 INFO L85 PathProgramCache]: Analyzing trace with hash -1081972643, now seen corresponding path program 5 times [2024-06-28 00:53:07,245 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:53:07,245 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1781835884] [2024-06-28 00:53:07,245 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:53:07,245 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:53:07,250 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:53:07,356 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:53:07,357 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:53:07,357 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1781835884] [2024-06-28 00:53:07,357 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1781835884] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:53:07,357 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:53:07,357 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 00:53:07,357 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [838356946] [2024-06-28 00:53:07,357 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:53:07,358 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 00:53:07,358 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:53:07,358 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 00:53:07,358 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2024-06-28 00:53:07,402 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 17 out of 45 [2024-06-28 00:53:07,403 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 150 places, 213 transitions, 2883 flow. Second operand has 8 states, 8 states have (on average 18.5) internal successors, (148), 8 states have internal predecessors, (148), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:53:07,403 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:53:07,403 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 17 of 45 [2024-06-28 00:53:07,403 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:53:08,511 INFO L124 PetriNetUnfolderBase]: 5849/9588 cut-off events. [2024-06-28 00:53:08,511 INFO L125 PetriNetUnfolderBase]: For 147541/147541 co-relation queries the response was YES. [2024-06-28 00:53:08,560 INFO L83 FinitePrefix]: Finished finitePrefix Result has 51693 conditions, 9588 events. 5849/9588 cut-off events. For 147541/147541 co-relation queries the response was YES. Maximal size of possible extension queue 660. Compared 72693 event pairs, 1573 based on Foata normal form. 42/9615 useless extension candidates. Maximal degree in co-relation 51624. Up to 6394 conditions per place. [2024-06-28 00:53:08,599 INFO L140 encePairwiseOnDemand]: 33/45 looper letters, 173 selfloop transitions, 99 changer transitions 0/285 dead transitions. [2024-06-28 00:53:08,599 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 159 places, 285 transitions, 3979 flow [2024-06-28 00:53:08,599 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 00:53:08,599 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 00:53:08,600 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 301 transitions. [2024-06-28 00:53:08,600 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6688888888888889 [2024-06-28 00:53:08,600 INFO L175 Difference]: Start difference. First operand has 150 places, 213 transitions, 2883 flow. Second operand 10 states and 301 transitions. [2024-06-28 00:53:08,600 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 159 places, 285 transitions, 3979 flow [2024-06-28 00:53:08,994 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 151 places, 285 transitions, 3734 flow, removed 29 selfloop flow, removed 8 redundant places. [2024-06-28 00:53:08,997 INFO L231 Difference]: Finished difference. Result has 153 places, 218 transitions, 2990 flow [2024-06-28 00:53:08,998 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=45, PETRI_DIFFERENCE_MINUEND_FLOW=2638, PETRI_DIFFERENCE_MINUEND_PLACES=142, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=213, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=95, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=115, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2990, PETRI_PLACES=153, PETRI_TRANSITIONS=218} [2024-06-28 00:53:08,998 INFO L281 CegarLoopForPetriNet]: 49 programPoint places, 104 predicate places. [2024-06-28 00:53:08,998 INFO L495 AbstractCegarLoop]: Abstraction has has 153 places, 218 transitions, 2990 flow [2024-06-28 00:53:08,998 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 18.5) internal successors, (148), 8 states have internal predecessors, (148), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:53:08,998 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:53:08,998 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:53:08,998 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2024-06-28 00:53:08,999 INFO L420 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 00:53:08,999 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:53:08,999 INFO L85 PathProgramCache]: Analyzing trace with hash -1076462393, now seen corresponding path program 6 times [2024-06-28 00:53:08,999 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:53:08,999 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [371846723] [2024-06-28 00:53:08,999 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:53:08,999 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:53:09,003 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:53:09,117 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:53:09,118 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:53:09,118 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [371846723] [2024-06-28 00:53:09,118 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [371846723] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:53:09,118 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:53:09,118 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 00:53:09,118 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [475627199] [2024-06-28 00:53:09,118 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:53:09,119 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 00:53:09,119 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:53:09,119 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 00:53:09,119 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2024-06-28 00:53:09,159 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 17 out of 45 [2024-06-28 00:53:09,160 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 153 places, 218 transitions, 2990 flow. Second operand has 8 states, 8 states have (on average 18.5) internal successors, (148), 8 states have internal predecessors, (148), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:53:09,160 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:53:09,160 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 17 of 45 [2024-06-28 00:53:09,160 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:53:10,265 INFO L124 PetriNetUnfolderBase]: 6006/9860 cut-off events. [2024-06-28 00:53:10,266 INFO L125 PetriNetUnfolderBase]: For 149225/149225 co-relation queries the response was YES. [2024-06-28 00:53:10,315 INFO L83 FinitePrefix]: Finished finitePrefix Result has 51895 conditions, 9860 events. 6006/9860 cut-off events. For 149225/149225 co-relation queries the response was YES. Maximal size of possible extension queue 688. Compared 75604 event pairs, 1806 based on Foata normal form. 50/9903 useless extension candidates. Maximal degree in co-relation 51824. Up to 8035 conditions per place. [2024-06-28 00:53:10,354 INFO L140 encePairwiseOnDemand]: 33/45 looper letters, 155 selfloop transitions, 100 changer transitions 0/268 dead transitions. [2024-06-28 00:53:10,354 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 161 places, 268 transitions, 3809 flow [2024-06-28 00:53:10,355 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 00:53:10,355 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 00:53:10,355 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 264 transitions. [2024-06-28 00:53:10,355 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6518518518518519 [2024-06-28 00:53:10,355 INFO L175 Difference]: Start difference. First operand has 153 places, 218 transitions, 2990 flow. Second operand 9 states and 264 transitions. [2024-06-28 00:53:10,355 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 161 places, 268 transitions, 3809 flow [2024-06-28 00:53:10,789 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 155 places, 268 transitions, 3598 flow, removed 43 selfloop flow, removed 6 redundant places. [2024-06-28 00:53:10,792 INFO L231 Difference]: Finished difference. Result has 156 places, 220 transitions, 3059 flow [2024-06-28 00:53:10,792 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=45, PETRI_DIFFERENCE_MINUEND_FLOW=2789, PETRI_DIFFERENCE_MINUEND_PLACES=147, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=218, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=98, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=118, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=3059, PETRI_PLACES=156, PETRI_TRANSITIONS=220} [2024-06-28 00:53:10,792 INFO L281 CegarLoopForPetriNet]: 49 programPoint places, 107 predicate places. [2024-06-28 00:53:10,793 INFO L495 AbstractCegarLoop]: Abstraction has has 156 places, 220 transitions, 3059 flow [2024-06-28 00:53:10,793 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 18.5) internal successors, (148), 8 states have internal predecessors, (148), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:53:10,793 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:53:10,793 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:53:10,793 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2024-06-28 00:53:10,793 INFO L420 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 00:53:10,794 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:53:10,794 INFO L85 PathProgramCache]: Analyzing trace with hash -1076247191, now seen corresponding path program 1 times [2024-06-28 00:53:10,794 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:53:10,794 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [298367016] [2024-06-28 00:53:10,794 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:53:10,794 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:53:10,798 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:53:10,893 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:53:10,893 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:53:10,893 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [298367016] [2024-06-28 00:53:10,893 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [298367016] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:53:10,893 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:53:10,894 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 00:53:10,894 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [987262544] [2024-06-28 00:53:10,894 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:53:10,894 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 00:53:10,894 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:53:10,894 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 00:53:10,895 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2024-06-28 00:53:10,947 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 17 out of 45 [2024-06-28 00:53:10,947 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 156 places, 220 transitions, 3059 flow. Second operand has 8 states, 8 states have (on average 18.5) internal successors, (148), 8 states have internal predecessors, (148), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:53:10,947 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:53:10,947 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 17 of 45 [2024-06-28 00:53:10,947 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:53:12,199 INFO L124 PetriNetUnfolderBase]: 6612/10900 cut-off events. [2024-06-28 00:53:12,199 INFO L125 PetriNetUnfolderBase]: For 169315/169315 co-relation queries the response was YES. [2024-06-28 00:53:12,259 INFO L83 FinitePrefix]: Finished finitePrefix Result has 57163 conditions, 10900 events. 6612/10900 cut-off events. For 169315/169315 co-relation queries the response was YES. Maximal size of possible extension queue 775. Compared 85388 event pairs, 1750 based on Foata normal form. 42/10927 useless extension candidates. Maximal degree in co-relation 57090. Up to 6400 conditions per place. [2024-06-28 00:53:12,303 INFO L140 encePairwiseOnDemand]: 33/45 looper letters, 150 selfloop transitions, 115 changer transitions 0/278 dead transitions. [2024-06-28 00:53:12,303 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 164 places, 278 transitions, 4027 flow [2024-06-28 00:53:12,304 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 00:53:12,304 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 00:53:12,304 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 270 transitions. [2024-06-28 00:53:12,305 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6666666666666666 [2024-06-28 00:53:12,305 INFO L175 Difference]: Start difference. First operand has 156 places, 220 transitions, 3059 flow. Second operand 9 states and 270 transitions. [2024-06-28 00:53:12,305 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 164 places, 278 transitions, 4027 flow [2024-06-28 00:53:12,762 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 157 places, 278 transitions, 3788 flow, removed 23 selfloop flow, removed 7 redundant places. [2024-06-28 00:53:12,765 INFO L231 Difference]: Finished difference. Result has 158 places, 223 transitions, 3166 flow [2024-06-28 00:53:12,765 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=45, PETRI_DIFFERENCE_MINUEND_FLOW=2820, PETRI_DIFFERENCE_MINUEND_PLACES=149, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=220, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=113, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=106, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=3166, PETRI_PLACES=158, PETRI_TRANSITIONS=223} [2024-06-28 00:53:12,766 INFO L281 CegarLoopForPetriNet]: 49 programPoint places, 109 predicate places. [2024-06-28 00:53:12,766 INFO L495 AbstractCegarLoop]: Abstraction has has 158 places, 223 transitions, 3166 flow [2024-06-28 00:53:12,766 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 18.5) internal successors, (148), 8 states have internal predecessors, (148), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:53:12,766 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:53:12,766 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:53:12,766 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2024-06-28 00:53:12,766 INFO L420 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 00:53:12,766 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:53:12,766 INFO L85 PathProgramCache]: Analyzing trace with hash -2042290647, now seen corresponding path program 7 times [2024-06-28 00:53:12,767 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:53:12,767 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [97081573] [2024-06-28 00:53:12,767 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:53:12,767 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:53:12,771 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:53:12,858 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:53:12,858 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:53:12,858 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [97081573] [2024-06-28 00:53:12,858 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [97081573] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:53:12,859 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:53:12,859 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 00:53:12,859 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1654486966] [2024-06-28 00:53:12,859 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:53:12,859 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 00:53:12,860 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:53:12,860 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 00:53:12,860 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2024-06-28 00:53:12,894 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 17 out of 45 [2024-06-28 00:53:12,894 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 158 places, 223 transitions, 3166 flow. Second operand has 8 states, 8 states have (on average 18.5) internal successors, (148), 8 states have internal predecessors, (148), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:53:12,894 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:53:12,894 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 17 of 45 [2024-06-28 00:53:12,895 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:53:14,284 INFO L124 PetriNetUnfolderBase]: 6671/10964 cut-off events. [2024-06-28 00:53:14,284 INFO L125 PetriNetUnfolderBase]: For 169404/169404 co-relation queries the response was YES. [2024-06-28 00:53:14,347 INFO L83 FinitePrefix]: Finished finitePrefix Result has 57883 conditions, 10964 events. 6671/10964 cut-off events. For 169404/169404 co-relation queries the response was YES. Maximal size of possible extension queue 782. Compared 85946 event pairs, 2114 based on Foata normal form. 16/10971 useless extension candidates. Maximal degree in co-relation 57809. Up to 9891 conditions per place. [2024-06-28 00:53:14,398 INFO L140 encePairwiseOnDemand]: 35/45 looper letters, 211 selfloop transitions, 43 changer transitions 0/267 dead transitions. [2024-06-28 00:53:14,398 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 165 places, 267 transitions, 3826 flow [2024-06-28 00:53:14,398 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 00:53:14,398 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 00:53:14,398 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 228 transitions. [2024-06-28 00:53:14,399 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6333333333333333 [2024-06-28 00:53:14,399 INFO L175 Difference]: Start difference. First operand has 158 places, 223 transitions, 3166 flow. Second operand 8 states and 228 transitions. [2024-06-28 00:53:14,399 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 165 places, 267 transitions, 3826 flow [2024-06-28 00:53:14,965 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 159 places, 267 transitions, 3574 flow, removed 32 selfloop flow, removed 6 redundant places. [2024-06-28 00:53:14,968 INFO L231 Difference]: Finished difference. Result has 160 places, 224 transitions, 3041 flow [2024-06-28 00:53:14,968 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=45, PETRI_DIFFERENCE_MINUEND_FLOW=2914, PETRI_DIFFERENCE_MINUEND_PLACES=152, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=223, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=42, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=180, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=3041, PETRI_PLACES=160, PETRI_TRANSITIONS=224} [2024-06-28 00:53:14,969 INFO L281 CegarLoopForPetriNet]: 49 programPoint places, 111 predicate places. [2024-06-28 00:53:14,969 INFO L495 AbstractCegarLoop]: Abstraction has has 160 places, 224 transitions, 3041 flow [2024-06-28 00:53:14,969 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 18.5) internal successors, (148), 8 states have internal predecessors, (148), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:53:14,969 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:53:14,969 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:53:14,970 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2024-06-28 00:53:14,970 INFO L420 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 00:53:14,970 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:53:14,970 INFO L85 PathProgramCache]: Analyzing trace with hash -1785574935, now seen corresponding path program 2 times [2024-06-28 00:53:14,970 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:53:14,970 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [74853549] [2024-06-28 00:53:14,970 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:53:14,971 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:53:14,975 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:53:15,073 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:53:15,073 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:53:15,074 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [74853549] [2024-06-28 00:53:15,074 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [74853549] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:53:15,074 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:53:15,074 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 00:53:15,074 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [948331840] [2024-06-28 00:53:15,074 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:53:15,074 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 00:53:15,075 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:53:15,075 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 00:53:15,075 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2024-06-28 00:53:15,107 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 17 out of 45 [2024-06-28 00:53:15,108 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 160 places, 224 transitions, 3041 flow. Second operand has 8 states, 8 states have (on average 18.5) internal successors, (148), 8 states have internal predecessors, (148), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:53:15,108 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:53:15,108 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 17 of 45 [2024-06-28 00:53:15,108 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:53:16,530 INFO L124 PetriNetUnfolderBase]: 6738/11227 cut-off events. [2024-06-28 00:53:16,530 INFO L125 PetriNetUnfolderBase]: For 171334/171334 co-relation queries the response was YES. [2024-06-28 00:53:16,579 INFO L83 FinitePrefix]: Finished finitePrefix Result has 57776 conditions, 11227 events. 6738/11227 cut-off events. For 171334/171334 co-relation queries the response was YES. Maximal size of possible extension queue 803. Compared 89273 event pairs, 3400 based on Foata normal form. 12/11180 useless extension candidates. Maximal degree in co-relation 57701. Up to 9875 conditions per place. [2024-06-28 00:53:16,621 INFO L140 encePairwiseOnDemand]: 35/45 looper letters, 213 selfloop transitions, 45 changer transitions 0/271 dead transitions. [2024-06-28 00:53:16,621 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 167 places, 271 transitions, 3727 flow [2024-06-28 00:53:16,622 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 00:53:16,622 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 00:53:16,622 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 231 transitions. [2024-06-28 00:53:16,622 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6416666666666667 [2024-06-28 00:53:16,622 INFO L175 Difference]: Start difference. First operand has 160 places, 224 transitions, 3041 flow. Second operand 8 states and 231 transitions. [2024-06-28 00:53:16,622 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 167 places, 271 transitions, 3727 flow [2024-06-28 00:53:17,033 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 161 places, 271 transitions, 3614 flow, removed 15 selfloop flow, removed 6 redundant places. [2024-06-28 00:53:17,036 INFO L231 Difference]: Finished difference. Result has 162 places, 225 transitions, 3060 flow [2024-06-28 00:53:17,036 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=45, PETRI_DIFFERENCE_MINUEND_FLOW=2928, PETRI_DIFFERENCE_MINUEND_PLACES=154, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=224, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=44, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=179, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=3060, PETRI_PLACES=162, PETRI_TRANSITIONS=225} [2024-06-28 00:53:17,037 INFO L281 CegarLoopForPetriNet]: 49 programPoint places, 113 predicate places. [2024-06-28 00:53:17,037 INFO L495 AbstractCegarLoop]: Abstraction has has 162 places, 225 transitions, 3060 flow [2024-06-28 00:53:17,037 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 18.5) internal successors, (148), 8 states have internal predecessors, (148), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:53:17,038 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:53:17,038 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:53:17,038 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2024-06-28 00:53:17,038 INFO L420 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 00:53:17,038 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:53:17,038 INFO L85 PathProgramCache]: Analyzing trace with hash -1776378165, now seen corresponding path program 3 times [2024-06-28 00:53:17,038 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:53:17,038 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [592533003] [2024-06-28 00:53:17,039 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:53:17,039 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:53:17,043 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:53:17,132 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:53:17,132 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:53:17,132 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [592533003] [2024-06-28 00:53:17,133 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [592533003] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:53:17,133 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:53:17,133 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 00:53:17,133 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1094382249] [2024-06-28 00:53:17,133 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:53:17,133 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 00:53:17,133 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:53:17,133 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 00:53:17,134 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2024-06-28 00:53:17,175 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 17 out of 45 [2024-06-28 00:53:17,175 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 162 places, 225 transitions, 3060 flow. Second operand has 8 states, 8 states have (on average 18.5) internal successors, (148), 8 states have internal predecessors, (148), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:53:17,175 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:53:17,175 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 17 of 45 [2024-06-28 00:53:17,175 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:53:18,461 INFO L124 PetriNetUnfolderBase]: 6718/11055 cut-off events. [2024-06-28 00:53:18,461 INFO L125 PetriNetUnfolderBase]: For 171343/171343 co-relation queries the response was YES. [2024-06-28 00:53:18,525 INFO L83 FinitePrefix]: Finished finitePrefix Result has 57026 conditions, 11055 events. 6718/11055 cut-off events. For 171343/171343 co-relation queries the response was YES. Maximal size of possible extension queue 786. Compared 86169 event pairs, 2033 based on Foata normal form. 12/11058 useless extension candidates. Maximal degree in co-relation 56950. Up to 9124 conditions per place. [2024-06-28 00:53:18,574 INFO L140 encePairwiseOnDemand]: 35/45 looper letters, 204 selfloop transitions, 54 changer transitions 0/271 dead transitions. [2024-06-28 00:53:18,574 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 168 places, 271 transitions, 3658 flow [2024-06-28 00:53:18,574 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 00:53:18,574 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 00:53:18,574 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 230 transitions. [2024-06-28 00:53:18,575 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6388888888888888 [2024-06-28 00:53:18,575 INFO L175 Difference]: Start difference. First operand has 162 places, 225 transitions, 3060 flow. Second operand 8 states and 230 transitions. [2024-06-28 00:53:18,575 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 168 places, 271 transitions, 3658 flow [2024-06-28 00:53:19,122 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 162 places, 271 transitions, 3538 flow, removed 16 selfloop flow, removed 6 redundant places. [2024-06-28 00:53:19,126 INFO L231 Difference]: Finished difference. Result has 163 places, 224 transitions, 2996 flow [2024-06-28 00:53:19,126 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=45, PETRI_DIFFERENCE_MINUEND_FLOW=2884, PETRI_DIFFERENCE_MINUEND_PLACES=155, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=224, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=54, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=170, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=2996, PETRI_PLACES=163, PETRI_TRANSITIONS=224} [2024-06-28 00:53:19,127 INFO L281 CegarLoopForPetriNet]: 49 programPoint places, 114 predicate places. [2024-06-28 00:53:19,127 INFO L495 AbstractCegarLoop]: Abstraction has has 163 places, 224 transitions, 2996 flow [2024-06-28 00:53:19,127 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 18.5) internal successors, (148), 8 states have internal predecessors, (148), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:53:19,127 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:53:19,127 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:53:19,127 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2024-06-28 00:53:19,127 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)] === [2024-06-28 00:53:19,128 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:53:19,128 INFO L85 PathProgramCache]: Analyzing trace with hash -1986008509, now seen corresponding path program 1 times [2024-06-28 00:53:19,128 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:53:19,128 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [564172844] [2024-06-28 00:53:19,128 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:53:19,128 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:53:19,132 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:53:19,210 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:53:19,211 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:53:19,211 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [564172844] [2024-06-28 00:53:19,211 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [564172844] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:53:19,211 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:53:19,211 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-06-28 00:53:19,211 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [161049595] [2024-06-28 00:53:19,211 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:53:19,212 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-06-28 00:53:19,212 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:53:19,212 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-06-28 00:53:19,212 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2024-06-28 00:53:19,252 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 18 out of 45 [2024-06-28 00:53:19,252 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 163 places, 224 transitions, 2996 flow. Second operand has 6 states, 6 states have (on average 20.166666666666668) internal successors, (121), 6 states have internal predecessors, (121), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:53:19,252 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:53:19,253 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 18 of 45 [2024-06-28 00:53:19,253 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:53:20,456 INFO L124 PetriNetUnfolderBase]: 6450/10787 cut-off events. [2024-06-28 00:53:20,456 INFO L125 PetriNetUnfolderBase]: For 169035/169064 co-relation queries the response was YES. [2024-06-28 00:53:20,518 INFO L83 FinitePrefix]: Finished finitePrefix Result has 55046 conditions, 10787 events. 6450/10787 cut-off events. For 169035/169064 co-relation queries the response was YES. Maximal size of possible extension queue 787. Compared 85900 event pairs, 3366 based on Foata normal form. 29/10703 useless extension candidates. Maximal degree in co-relation 54969. Up to 9644 conditions per place. [2024-06-28 00:53:20,561 INFO L140 encePairwiseOnDemand]: 38/45 looper letters, 184 selfloop transitions, 19 changer transitions 0/242 dead transitions. [2024-06-28 00:53:20,561 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 167 places, 242 transitions, 3466 flow [2024-06-28 00:53:20,562 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-06-28 00:53:20,562 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-06-28 00:53:20,562 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 141 transitions. [2024-06-28 00:53:20,562 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6266666666666667 [2024-06-28 00:53:20,562 INFO L175 Difference]: Start difference. First operand has 163 places, 224 transitions, 2996 flow. Second operand 5 states and 141 transitions. [2024-06-28 00:53:20,562 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 167 places, 242 transitions, 3466 flow [2024-06-28 00:53:20,964 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 160 places, 242 transitions, 3267 flow, removed 17 selfloop flow, removed 7 redundant places. [2024-06-28 00:53:20,967 INFO L231 Difference]: Finished difference. Result has 161 places, 227 transitions, 2877 flow [2024-06-28 00:53:20,967 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=45, PETRI_DIFFERENCE_MINUEND_FLOW=2797, PETRI_DIFFERENCE_MINUEND_PLACES=156, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=224, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=16, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=205, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=2877, PETRI_PLACES=161, PETRI_TRANSITIONS=227} [2024-06-28 00:53:20,968 INFO L281 CegarLoopForPetriNet]: 49 programPoint places, 112 predicate places. [2024-06-28 00:53:20,968 INFO L495 AbstractCegarLoop]: Abstraction has has 161 places, 227 transitions, 2877 flow [2024-06-28 00:53:20,968 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 20.166666666666668) internal successors, (121), 6 states have internal predecessors, (121), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:53:20,968 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:53:20,968 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:53:20,968 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30 [2024-06-28 00:53:20,968 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)] === [2024-06-28 00:53:20,968 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:53:20,968 INFO L85 PathProgramCache]: Analyzing trace with hash -1598067743, now seen corresponding path program 1 times [2024-06-28 00:53:20,968 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:53:20,969 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [696154029] [2024-06-28 00:53:20,969 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:53:20,969 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:53:20,973 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:53:21,037 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:53:21,038 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:53:21,038 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [696154029] [2024-06-28 00:53:21,038 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [696154029] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:53:21,038 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:53:21,038 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-06-28 00:53:21,038 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [201828001] [2024-06-28 00:53:21,038 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:53:21,038 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-06-28 00:53:21,039 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:53:21,039 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-06-28 00:53:21,039 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2024-06-28 00:53:21,070 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 17 out of 45 [2024-06-28 00:53:21,071 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 161 places, 227 transitions, 2877 flow. Second operand has 6 states, 6 states have (on average 19.166666666666668) internal successors, (115), 6 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:53:21,071 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:53:21,071 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 17 of 45 [2024-06-28 00:53:21,071 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:53:22,321 INFO L124 PetriNetUnfolderBase]: 6709/11216 cut-off events. [2024-06-28 00:53:22,321 INFO L125 PetriNetUnfolderBase]: For 178543/178543 co-relation queries the response was YES. [2024-06-28 00:53:22,372 INFO L83 FinitePrefix]: Finished finitePrefix Result has 57369 conditions, 11216 events. 6709/11216 cut-off events. For 178543/178543 co-relation queries the response was YES. Maximal size of possible extension queue 801. Compared 89320 event pairs, 3423 based on Foata normal form. 1/11183 useless extension candidates. Maximal degree in co-relation 57293. Up to 10174 conditions per place. [2024-06-28 00:53:22,415 INFO L140 encePairwiseOnDemand]: 36/45 looper letters, 226 selfloop transitions, 38 changer transitions 0/277 dead transitions. [2024-06-28 00:53:22,415 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 166 places, 277 transitions, 3925 flow [2024-06-28 00:53:22,415 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-28 00:53:22,415 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-28 00:53:22,416 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 171 transitions. [2024-06-28 00:53:22,416 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6333333333333333 [2024-06-28 00:53:22,416 INFO L175 Difference]: Start difference. First operand has 161 places, 227 transitions, 2877 flow. Second operand 6 states and 171 transitions. [2024-06-28 00:53:22,416 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 166 places, 277 transitions, 3925 flow [2024-06-28 00:53:22,876 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 163 places, 277 transitions, 3861 flow, removed 11 selfloop flow, removed 3 redundant places. [2024-06-28 00:53:22,879 INFO L231 Difference]: Finished difference. Result has 167 places, 250 transitions, 3361 flow [2024-06-28 00:53:22,879 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=45, PETRI_DIFFERENCE_MINUEND_FLOW=2821, PETRI_DIFFERENCE_MINUEND_PLACES=158, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=227, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=17, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=191, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=3361, PETRI_PLACES=167, PETRI_TRANSITIONS=250} [2024-06-28 00:53:22,880 INFO L281 CegarLoopForPetriNet]: 49 programPoint places, 118 predicate places. [2024-06-28 00:53:22,880 INFO L495 AbstractCegarLoop]: Abstraction has has 167 places, 250 transitions, 3361 flow [2024-06-28 00:53:22,880 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 19.166666666666668) internal successors, (115), 6 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:53:22,880 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:53:22,880 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:53:22,880 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31 [2024-06-28 00:53:22,880 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)] === [2024-06-28 00:53:22,881 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:53:22,881 INFO L85 PathProgramCache]: Analyzing trace with hash 2131596069, now seen corresponding path program 1 times [2024-06-28 00:53:22,881 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:53:22,881 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [109998149] [2024-06-28 00:53:22,881 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:53:22,881 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:53:22,885 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:53:22,967 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:53:22,968 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:53:22,968 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [109998149] [2024-06-28 00:53:22,968 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [109998149] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:53:22,968 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:53:22,968 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-06-28 00:53:22,968 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2137012747] [2024-06-28 00:53:22,968 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:53:22,969 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-06-28 00:53:22,969 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:53:22,969 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-06-28 00:53:22,969 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-06-28 00:53:22,997 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 17 out of 45 [2024-06-28 00:53:22,997 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 167 places, 250 transitions, 3361 flow. Second operand has 6 states, 6 states have (on average 19.166666666666668) internal successors, (115), 6 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:53:22,997 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:53:22,997 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 17 of 45 [2024-06-28 00:53:22,997 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:53:24,313 INFO L124 PetriNetUnfolderBase]: 6746/11334 cut-off events. [2024-06-28 00:53:24,314 INFO L125 PetriNetUnfolderBase]: For 195495/195504 co-relation queries the response was YES. [2024-06-28 00:53:24,398 INFO L83 FinitePrefix]: Finished finitePrefix Result has 59877 conditions, 11334 events. 6746/11334 cut-off events. For 195495/195504 co-relation queries the response was YES. Maximal size of possible extension queue 804. Compared 90587 event pairs, 2414 based on Foata normal form. 10/11334 useless extension candidates. Maximal degree in co-relation 59797. Up to 10180 conditions per place. [2024-06-28 00:53:24,627 INFO L140 encePairwiseOnDemand]: 35/45 looper letters, 231 selfloop transitions, 42 changer transitions 0/286 dead transitions. [2024-06-28 00:53:24,628 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 173 places, 286 transitions, 4144 flow [2024-06-28 00:53:24,628 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 00:53:24,628 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 00:53:24,628 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 192 transitions. [2024-06-28 00:53:24,628 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6095238095238096 [2024-06-28 00:53:24,629 INFO L175 Difference]: Start difference. First operand has 167 places, 250 transitions, 3361 flow. Second operand 7 states and 192 transitions. [2024-06-28 00:53:24,629 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 173 places, 286 transitions, 4144 flow [2024-06-28 00:53:25,208 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 173 places, 286 transitions, 4080 flow, removed 32 selfloop flow, removed 0 redundant places. [2024-06-28 00:53:25,215 INFO L231 Difference]: Finished difference. Result has 175 places, 261 transitions, 3586 flow [2024-06-28 00:53:25,215 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=45, PETRI_DIFFERENCE_MINUEND_FLOW=3299, PETRI_DIFFERENCE_MINUEND_PLACES=167, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=250, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=31, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=211, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=3586, PETRI_PLACES=175, PETRI_TRANSITIONS=261} [2024-06-28 00:53:25,216 INFO L281 CegarLoopForPetriNet]: 49 programPoint places, 126 predicate places. [2024-06-28 00:53:25,216 INFO L495 AbstractCegarLoop]: Abstraction has has 175 places, 261 transitions, 3586 flow [2024-06-28 00:53:25,216 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 19.166666666666668) internal successors, (115), 6 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:53:25,216 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:53:25,216 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:53:25,219 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32 [2024-06-28 00:53:25,220 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)] === [2024-06-28 00:53:25,221 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:53:25,221 INFO L85 PathProgramCache]: Analyzing trace with hash 2139757729, now seen corresponding path program 2 times [2024-06-28 00:53:25,221 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:53:25,221 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1659572304] [2024-06-28 00:53:25,221 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:53:25,221 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:53:25,226 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:53:25,296 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:53:25,296 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:53:25,296 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1659572304] [2024-06-28 00:53:25,296 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1659572304] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:53:25,296 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:53:25,296 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-06-28 00:53:25,297 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [507786235] [2024-06-28 00:53:25,297 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:53:25,297 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-06-28 00:53:25,297 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:53:25,298 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-06-28 00:53:25,298 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2024-06-28 00:53:25,315 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 17 out of 45 [2024-06-28 00:53:25,315 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 175 places, 261 transitions, 3586 flow. Second operand has 6 states, 6 states have (on average 19.166666666666668) internal successors, (115), 6 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:53:25,316 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:53:25,316 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 17 of 45 [2024-06-28 00:53:25,316 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:53:26,666 INFO L124 PetriNetUnfolderBase]: 6768/11199 cut-off events. [2024-06-28 00:53:26,666 INFO L125 PetriNetUnfolderBase]: For 203602/203614 co-relation queries the response was YES. [2024-06-28 00:53:26,744 INFO L83 FinitePrefix]: Finished finitePrefix Result has 60532 conditions, 11199 events. 6768/11199 cut-off events. For 203602/203614 co-relation queries the response was YES. Maximal size of possible extension queue 793. Compared 88784 event pairs, 2124 based on Foata normal form. 10/11192 useless extension candidates. Maximal degree in co-relation 60448. Up to 10042 conditions per place. [2024-06-28 00:53:26,791 INFO L140 encePairwiseOnDemand]: 35/45 looper letters, 197 selfloop transitions, 80 changer transitions 0/290 dead transitions. [2024-06-28 00:53:26,792 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 180 places, 290 transitions, 4383 flow [2024-06-28 00:53:26,792 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-28 00:53:26,792 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-28 00:53:26,793 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 171 transitions. [2024-06-28 00:53:26,793 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6333333333333333 [2024-06-28 00:53:26,793 INFO L175 Difference]: Start difference. First operand has 175 places, 261 transitions, 3586 flow. Second operand 6 states and 171 transitions. [2024-06-28 00:53:26,793 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 180 places, 290 transitions, 4383 flow [2024-06-28 00:53:27,473 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 177 places, 290 transitions, 4266 flow, removed 31 selfloop flow, removed 3 redundant places. [2024-06-28 00:53:27,477 INFO L231 Difference]: Finished difference. Result has 178 places, 267 transitions, 3749 flow [2024-06-28 00:53:27,477 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=45, PETRI_DIFFERENCE_MINUEND_FLOW=3469, PETRI_DIFFERENCE_MINUEND_PLACES=172, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=261, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=74, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=187, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=3749, PETRI_PLACES=178, PETRI_TRANSITIONS=267} [2024-06-28 00:53:27,477 INFO L281 CegarLoopForPetriNet]: 49 programPoint places, 129 predicate places. [2024-06-28 00:53:27,477 INFO L495 AbstractCegarLoop]: Abstraction has has 178 places, 267 transitions, 3749 flow [2024-06-28 00:53:27,478 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 19.166666666666668) internal successors, (115), 6 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:53:27,478 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:53:27,478 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:53:27,478 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33 [2024-06-28 00:53:27,478 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)] === [2024-06-28 00:53:27,478 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:53:27,478 INFO L85 PathProgramCache]: Analyzing trace with hash -906027587, now seen corresponding path program 3 times [2024-06-28 00:53:27,478 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:53:27,478 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [81117524] [2024-06-28 00:53:27,478 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:53:27,478 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:53:27,482 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:53:27,556 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:53:27,556 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:53:27,557 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [81117524] [2024-06-28 00:53:27,557 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [81117524] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:53:27,557 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:53:27,557 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-06-28 00:53:27,557 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1089444270] [2024-06-28 00:53:27,557 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:53:27,557 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-06-28 00:53:27,557 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:53:27,557 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-06-28 00:53:27,557 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2024-06-28 00:53:27,584 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 17 out of 45 [2024-06-28 00:53:27,584 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 178 places, 267 transitions, 3749 flow. Second operand has 6 states, 6 states have (on average 19.166666666666668) internal successors, (115), 6 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:53:27,584 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:53:27,584 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 17 of 45 [2024-06-28 00:53:27,584 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:53:29,103 INFO L124 PetriNetUnfolderBase]: 6665/10968 cut-off events. [2024-06-28 00:53:29,103 INFO L125 PetriNetUnfolderBase]: For 207080/207089 co-relation queries the response was YES. [2024-06-28 00:53:29,171 INFO L83 FinitePrefix]: Finished finitePrefix Result has 59511 conditions, 10968 events. 6665/10968 cut-off events. For 207080/207089 co-relation queries the response was YES. Maximal size of possible extension queue 772. Compared 85804 event pairs, 2056 based on Foata normal form. 12/10976 useless extension candidates. Maximal degree in co-relation 59426. Up to 9864 conditions per place. [2024-06-28 00:53:29,221 INFO L140 encePairwiseOnDemand]: 35/45 looper letters, 200 selfloop transitions, 82 changer transitions 0/295 dead transitions. [2024-06-28 00:53:29,221 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 184 places, 295 transitions, 4394 flow [2024-06-28 00:53:29,222 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 00:53:29,222 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 00:53:29,222 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 197 transitions. [2024-06-28 00:53:29,222 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6253968253968254 [2024-06-28 00:53:29,222 INFO L175 Difference]: Start difference. First operand has 178 places, 267 transitions, 3749 flow. Second operand 7 states and 197 transitions. [2024-06-28 00:53:29,223 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 184 places, 295 transitions, 4394 flow [2024-06-28 00:53:30,069 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 181 places, 295 transitions, 4250 flow, removed 13 selfloop flow, removed 3 redundant places. [2024-06-28 00:53:30,074 INFO L231 Difference]: Finished difference. Result has 182 places, 267 transitions, 3798 flow [2024-06-28 00:53:30,075 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=45, PETRI_DIFFERENCE_MINUEND_FLOW=3605, PETRI_DIFFERENCE_MINUEND_PLACES=175, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=267, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=82, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=185, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=3798, PETRI_PLACES=182, PETRI_TRANSITIONS=267} [2024-06-28 00:53:30,075 INFO L281 CegarLoopForPetriNet]: 49 programPoint places, 133 predicate places. [2024-06-28 00:53:30,075 INFO L495 AbstractCegarLoop]: Abstraction has has 182 places, 267 transitions, 3798 flow [2024-06-28 00:53:30,075 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 19.166666666666668) internal successors, (115), 6 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:53:30,075 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:53:30,075 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:53:30,076 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable34 [2024-06-28 00:53:30,076 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)] === [2024-06-28 00:53:30,076 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:53:30,076 INFO L85 PathProgramCache]: Analyzing trace with hash 2139766657, now seen corresponding path program 1 times [2024-06-28 00:53:30,076 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:53:30,076 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1361380741] [2024-06-28 00:53:30,076 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:53:30,076 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:53:30,082 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:53:30,193 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:53:30,194 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:53:30,194 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1361380741] [2024-06-28 00:53:30,194 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1361380741] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:53:30,194 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:53:30,194 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-06-28 00:53:30,194 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1774017771] [2024-06-28 00:53:30,194 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:53:30,194 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-06-28 00:53:30,194 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:53:30,195 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-06-28 00:53:30,195 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-06-28 00:53:30,226 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 18 out of 45 [2024-06-28 00:53:30,226 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 182 places, 267 transitions, 3798 flow. Second operand has 6 states, 6 states have (on average 20.166666666666668) internal successors, (121), 6 states have internal predecessors, (121), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:53:30,226 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:53:30,226 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 18 of 45 [2024-06-28 00:53:30,226 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:53:31,509 INFO L124 PetriNetUnfolderBase]: 6489/10734 cut-off events. [2024-06-28 00:53:31,509 INFO L125 PetriNetUnfolderBase]: For 217051/217060 co-relation queries the response was YES. [2024-06-28 00:53:31,572 INFO L83 FinitePrefix]: Finished finitePrefix Result has 58217 conditions, 10734 events. 6489/10734 cut-off events. For 217051/217060 co-relation queries the response was YES. Maximal size of possible extension queue 771. Compared 84672 event pairs, 1961 based on Foata normal form. 24/10686 useless extension candidates. Maximal degree in co-relation 58131. Up to 9503 conditions per place. [2024-06-28 00:53:31,616 INFO L140 encePairwiseOnDemand]: 38/45 looper letters, 223 selfloop transitions, 22 changer transitions 0/288 dead transitions. [2024-06-28 00:53:31,616 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 186 places, 288 transitions, 4374 flow [2024-06-28 00:53:31,616 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-06-28 00:53:31,616 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-06-28 00:53:31,617 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 144 transitions. [2024-06-28 00:53:31,617 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.64 [2024-06-28 00:53:31,617 INFO L175 Difference]: Start difference. First operand has 182 places, 267 transitions, 3798 flow. Second operand 5 states and 144 transitions. [2024-06-28 00:53:31,617 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 186 places, 288 transitions, 4374 flow [2024-06-28 00:53:32,431 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 179 places, 288 transitions, 4166 flow, removed 1 selfloop flow, removed 7 redundant places. [2024-06-28 00:53:32,435 INFO L231 Difference]: Finished difference. Result has 180 places, 269 transitions, 3671 flow [2024-06-28 00:53:32,435 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=45, PETRI_DIFFERENCE_MINUEND_FLOW=3590, PETRI_DIFFERENCE_MINUEND_PLACES=175, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=267, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=20, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=245, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=3671, PETRI_PLACES=180, PETRI_TRANSITIONS=269} [2024-06-28 00:53:32,436 INFO L281 CegarLoopForPetriNet]: 49 programPoint places, 131 predicate places. [2024-06-28 00:53:32,436 INFO L495 AbstractCegarLoop]: Abstraction has has 180 places, 269 transitions, 3671 flow [2024-06-28 00:53:32,436 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 20.166666666666668) internal successors, (121), 6 states have internal predecessors, (121), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:53:32,436 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:53:32,436 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:53:32,436 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable35 [2024-06-28 00:53:32,436 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)] === [2024-06-28 00:53:32,436 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:53:32,436 INFO L85 PathProgramCache]: Analyzing trace with hash 1651245001, now seen corresponding path program 1 times [2024-06-28 00:53:32,437 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:53:32,437 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1668008138] [2024-06-28 00:53:32,437 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:53:32,437 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:53:32,440 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:53:32,519 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:53:32,520 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:53:32,520 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1668008138] [2024-06-28 00:53:32,520 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1668008138] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:53:32,520 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:53:32,520 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-28 00:53:32,520 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [835132743] [2024-06-28 00:53:32,520 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:53:32,522 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-28 00:53:32,522 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:53:32,522 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-28 00:53:32,522 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=23, Unknown=0, NotChecked=0, Total=42 [2024-06-28 00:53:32,546 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 17 out of 45 [2024-06-28 00:53:32,547 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 180 places, 269 transitions, 3671 flow. Second operand has 7 states, 7 states have (on average 19.0) internal successors, (133), 7 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) [2024-06-28 00:53:32,547 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:53:32,547 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 17 of 45 [2024-06-28 00:53:32,547 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:53:33,845 INFO L124 PetriNetUnfolderBase]: 6739/11189 cut-off events. [2024-06-28 00:53:33,845 INFO L125 PetriNetUnfolderBase]: For 208538/208538 co-relation queries the response was YES. [2024-06-28 00:53:33,921 INFO L83 FinitePrefix]: Finished finitePrefix Result has 60049 conditions, 11189 events. 6739/11189 cut-off events. For 208538/208538 co-relation queries the response was YES. Maximal size of possible extension queue 792. Compared 88595 event pairs, 2142 based on Foata normal form. 1/11182 useless extension candidates. Maximal degree in co-relation 59962. Up to 10178 conditions per place. [2024-06-28 00:53:33,967 INFO L140 encePairwiseOnDemand]: 36/45 looper letters, 245 selfloop transitions, 42 changer transitions 0/300 dead transitions. [2024-06-28 00:53:33,967 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 186 places, 300 transitions, 4368 flow [2024-06-28 00:53:33,968 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 00:53:33,968 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 00:53:33,968 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 193 transitions. [2024-06-28 00:53:33,968 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6126984126984127 [2024-06-28 00:53:33,968 INFO L175 Difference]: Start difference. First operand has 180 places, 269 transitions, 3671 flow. Second operand 7 states and 193 transitions. [2024-06-28 00:53:33,968 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 186 places, 300 transitions, 4368 flow [2024-06-28 00:53:34,711 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 183 places, 300 transitions, 4293 flow, removed 18 selfloop flow, removed 3 redundant places. [2024-06-28 00:53:34,715 INFO L231 Difference]: Finished difference. Result has 184 places, 270 transitions, 3707 flow [2024-06-28 00:53:34,715 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=45, PETRI_DIFFERENCE_MINUEND_FLOW=3604, PETRI_DIFFERENCE_MINUEND_PLACES=177, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=269, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=41, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=228, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=3707, PETRI_PLACES=184, PETRI_TRANSITIONS=270} [2024-06-28 00:53:34,716 INFO L281 CegarLoopForPetriNet]: 49 programPoint places, 135 predicate places. [2024-06-28 00:53:34,716 INFO L495 AbstractCegarLoop]: Abstraction has has 184 places, 270 transitions, 3707 flow [2024-06-28 00:53:34,716 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 19.0) internal successors, (133), 7 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) [2024-06-28 00:53:34,716 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:53:34,716 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:53:34,716 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable36 [2024-06-28 00:53:34,716 INFO L420 AbstractCegarLoop]: === Iteration 38 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 00:53:34,717 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:53:34,717 INFO L85 PathProgramCache]: Analyzing trace with hash 984946890, now seen corresponding path program 1 times [2024-06-28 00:53:34,717 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:53:34,717 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1803868725] [2024-06-28 00:53:34,717 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:53:34,717 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:53:34,721 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:53:34,794 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:53:34,794 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:53:34,794 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1803868725] [2024-06-28 00:53:34,794 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1803868725] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:53:34,795 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:53:34,795 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-28 00:53:34,795 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [380764531] [2024-06-28 00:53:34,795 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:53:34,795 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-28 00:53:34,795 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:53:34,796 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-28 00:53:34,796 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2024-06-28 00:53:34,834 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 17 out of 45 [2024-06-28 00:53:34,834 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 184 places, 270 transitions, 3707 flow. Second operand has 7 states, 7 states have (on average 19.0) internal successors, (133), 7 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) [2024-06-28 00:53:34,834 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:53:34,834 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 17 of 45 [2024-06-28 00:53:34,834 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:53:36,163 INFO L124 PetriNetUnfolderBase]: 6764/11414 cut-off events. [2024-06-28 00:53:36,164 INFO L125 PetriNetUnfolderBase]: For 218580/218589 co-relation queries the response was YES. [2024-06-28 00:53:36,231 INFO L83 FinitePrefix]: Finished finitePrefix Result has 60682 conditions, 11414 events. 6764/11414 cut-off events. For 218580/218589 co-relation queries the response was YES. Maximal size of possible extension queue 799. Compared 91582 event pairs, 2371 based on Foata normal form. 7/11409 useless extension candidates. Maximal degree in co-relation 60594. Up to 9980 conditions per place. [2024-06-28 00:53:36,277 INFO L140 encePairwiseOnDemand]: 35/45 looper letters, 198 selfloop transitions, 96 changer transitions 0/307 dead transitions. [2024-06-28 00:53:36,277 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 191 places, 307 transitions, 4539 flow [2024-06-28 00:53:36,278 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 00:53:36,278 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 00:53:36,278 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 221 transitions. [2024-06-28 00:53:36,278 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6138888888888889 [2024-06-28 00:53:36,278 INFO L175 Difference]: Start difference. First operand has 184 places, 270 transitions, 3707 flow. Second operand 8 states and 221 transitions. [2024-06-28 00:53:36,278 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 191 places, 307 transitions, 4539 flow [2024-06-28 00:53:37,279 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 186 places, 307 transitions, 4419 flow, removed 18 selfloop flow, removed 5 redundant places. [2024-06-28 00:53:37,283 INFO L231 Difference]: Finished difference. Result has 188 places, 276 transitions, 3947 flow [2024-06-28 00:53:37,283 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=45, PETRI_DIFFERENCE_MINUEND_FLOW=3589, PETRI_DIFFERENCE_MINUEND_PLACES=179, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=270, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=92, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=176, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=3947, PETRI_PLACES=188, PETRI_TRANSITIONS=276} [2024-06-28 00:53:37,283 INFO L281 CegarLoopForPetriNet]: 49 programPoint places, 139 predicate places. [2024-06-28 00:53:37,283 INFO L495 AbstractCegarLoop]: Abstraction has has 188 places, 276 transitions, 3947 flow [2024-06-28 00:53:37,283 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 19.0) internal successors, (133), 7 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) [2024-06-28 00:53:37,284 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:53:37,284 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:53:37,284 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable37 [2024-06-28 00:53:37,284 INFO L420 AbstractCegarLoop]: === Iteration 39 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 00:53:37,284 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:53:37,284 INFO L85 PathProgramCache]: Analyzing trace with hash -362453080, now seen corresponding path program 2 times [2024-06-28 00:53:37,284 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:53:37,284 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [745649642] [2024-06-28 00:53:37,284 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:53:37,284 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:53:37,288 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:53:37,364 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:53:37,365 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:53:37,365 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [745649642] [2024-06-28 00:53:37,365 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [745649642] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:53:37,365 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:53:37,365 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-28 00:53:37,365 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1451186735] [2024-06-28 00:53:37,365 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:53:37,366 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-28 00:53:37,366 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:53:37,366 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-28 00:53:37,366 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2024-06-28 00:53:37,402 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 17 out of 45 [2024-06-28 00:53:37,402 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 188 places, 276 transitions, 3947 flow. Second operand has 7 states, 7 states have (on average 19.0) internal successors, (133), 7 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) [2024-06-28 00:53:37,402 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:53:37,402 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 17 of 45 [2024-06-28 00:53:37,402 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:53:38,748 INFO L124 PetriNetUnfolderBase]: 6803/11166 cut-off events. [2024-06-28 00:53:38,749 INFO L125 PetriNetUnfolderBase]: For 227342/227351 co-relation queries the response was YES. [2024-06-28 00:53:38,826 INFO L83 FinitePrefix]: Finished finitePrefix Result has 62646 conditions, 11166 events. 6803/11166 cut-off events. For 227342/227351 co-relation queries the response was YES. Maximal size of possible extension queue 787. Compared 87512 event pairs, 2071 based on Foata normal form. 7/11165 useless extension candidates. Maximal degree in co-relation 62556. Up to 9924 conditions per place. [2024-06-28 00:53:38,873 INFO L140 encePairwiseOnDemand]: 35/45 looper letters, 208 selfloop transitions, 105 changer transitions 0/326 dead transitions. [2024-06-28 00:53:38,873 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 194 places, 326 transitions, 5153 flow [2024-06-28 00:53:38,873 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 00:53:38,873 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 00:53:38,880 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 204 transitions. [2024-06-28 00:53:38,880 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6476190476190476 [2024-06-28 00:53:38,881 INFO L175 Difference]: Start difference. First operand has 188 places, 276 transitions, 3947 flow. Second operand 7 states and 204 transitions. [2024-06-28 00:53:38,881 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 194 places, 326 transitions, 5153 flow [2024-06-28 00:53:39,697 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 190 places, 326 transitions, 5001 flow, removed 37 selfloop flow, removed 4 redundant places. [2024-06-28 00:53:39,701 INFO L231 Difference]: Finished difference. Result has 193 places, 293 transitions, 4401 flow [2024-06-28 00:53:39,701 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=45, PETRI_DIFFERENCE_MINUEND_FLOW=3805, PETRI_DIFFERENCE_MINUEND_PLACES=184, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=276, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=92, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=181, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=4401, PETRI_PLACES=193, PETRI_TRANSITIONS=293} [2024-06-28 00:53:39,702 INFO L281 CegarLoopForPetriNet]: 49 programPoint places, 144 predicate places. [2024-06-28 00:53:39,702 INFO L495 AbstractCegarLoop]: Abstraction has has 193 places, 293 transitions, 4401 flow [2024-06-28 00:53:39,702 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 19.0) internal successors, (133), 7 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) [2024-06-28 00:53:39,702 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:53:39,702 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:53:39,702 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable38 [2024-06-28 00:53:39,702 INFO L420 AbstractCegarLoop]: === Iteration 40 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 00:53:39,703 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:53:39,703 INFO L85 PathProgramCache]: Analyzing trace with hash -351025240, now seen corresponding path program 3 times [2024-06-28 00:53:39,703 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:53:39,703 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1995969816] [2024-06-28 00:53:39,703 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:53:39,703 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:53:39,707 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:53:39,780 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:53:39,781 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:53:39,781 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1995969816] [2024-06-28 00:53:39,781 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1995969816] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:53:39,781 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:53:39,781 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-28 00:53:39,781 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2034380334] [2024-06-28 00:53:39,781 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:53:39,781 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-28 00:53:39,781 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:53:39,782 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-28 00:53:39,782 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2024-06-28 00:53:39,814 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 17 out of 45 [2024-06-28 00:53:39,814 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 193 places, 293 transitions, 4401 flow. Second operand has 7 states, 7 states have (on average 19.0) internal successors, (133), 7 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) [2024-06-28 00:53:39,814 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:53:39,814 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 17 of 45 [2024-06-28 00:53:39,814 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:53:41,423 INFO L124 PetriNetUnfolderBase]: 6814/11495 cut-off events. [2024-06-28 00:53:41,424 INFO L125 PetriNetUnfolderBase]: For 240593/240602 co-relation queries the response was YES. [2024-06-28 00:53:41,481 INFO L83 FinitePrefix]: Finished finitePrefix Result has 65206 conditions, 11495 events. 6814/11495 cut-off events. For 240593/240602 co-relation queries the response was YES. Maximal size of possible extension queue 800. Compared 92131 event pairs, 2403 based on Foata normal form. 7/11485 useless extension candidates. Maximal degree in co-relation 65112. Up to 9932 conditions per place. [2024-06-28 00:53:41,525 INFO L140 encePairwiseOnDemand]: 35/45 looper letters, 204 selfloop transitions, 108 changer transitions 0/325 dead transitions. [2024-06-28 00:53:41,525 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 199 places, 325 transitions, 5308 flow [2024-06-28 00:53:41,525 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 00:53:41,526 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 00:53:41,526 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 199 transitions. [2024-06-28 00:53:41,526 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6317460317460317 [2024-06-28 00:53:41,526 INFO L175 Difference]: Start difference. First operand has 193 places, 293 transitions, 4401 flow. Second operand 7 states and 199 transitions. [2024-06-28 00:53:41,526 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 199 places, 325 transitions, 5308 flow [2024-06-28 00:53:42,681 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 199 places, 325 transitions, 5172 flow, removed 68 selfloop flow, removed 0 redundant places. [2024-06-28 00:53:42,685 INFO L231 Difference]: Finished difference. Result has 200 places, 296 transitions, 4564 flow [2024-06-28 00:53:42,685 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=45, PETRI_DIFFERENCE_MINUEND_FLOW=4283, PETRI_DIFFERENCE_MINUEND_PLACES=193, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=293, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=105, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=188, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=4564, PETRI_PLACES=200, PETRI_TRANSITIONS=296} [2024-06-28 00:53:42,686 INFO L281 CegarLoopForPetriNet]: 49 programPoint places, 151 predicate places. [2024-06-28 00:53:42,686 INFO L495 AbstractCegarLoop]: Abstraction has has 200 places, 296 transitions, 4564 flow [2024-06-28 00:53:42,686 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 19.0) internal successors, (133), 7 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) [2024-06-28 00:53:42,686 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:53:42,686 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:53:42,686 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable39 [2024-06-28 00:53:42,686 INFO L420 AbstractCegarLoop]: === Iteration 41 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 00:53:42,687 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:53:42,687 INFO L85 PathProgramCache]: Analyzing trace with hash -235555324, now seen corresponding path program 1 times [2024-06-28 00:53:42,687 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:53:42,687 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1630249400] [2024-06-28 00:53:42,687 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:53:42,687 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:53:42,691 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:53:42,764 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:53:42,764 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:53:42,765 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1630249400] [2024-06-28 00:53:42,765 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1630249400] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:53:42,765 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:53:42,765 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-28 00:53:42,765 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [819842277] [2024-06-28 00:53:42,765 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:53:42,765 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-28 00:53:42,766 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:53:42,766 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-28 00:53:42,766 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2024-06-28 00:53:42,789 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 17 out of 45 [2024-06-28 00:53:42,790 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 200 places, 296 transitions, 4564 flow. Second operand has 7 states, 7 states have (on average 19.0) internal successors, (133), 7 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) [2024-06-28 00:53:42,790 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:53:42,790 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 17 of 45 [2024-06-28 00:53:42,790 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:53:44,295 INFO L124 PetriNetUnfolderBase]: 6892/11495 cut-off events. [2024-06-28 00:53:44,295 INFO L125 PetriNetUnfolderBase]: For 243712/243721 co-relation queries the response was YES. [2024-06-28 00:53:44,380 INFO L83 FinitePrefix]: Finished finitePrefix Result has 64744 conditions, 11495 events. 6892/11495 cut-off events. For 243712/243721 co-relation queries the response was YES. Maximal size of possible extension queue 802. Compared 91359 event pairs, 2372 based on Foata normal form. 8/11491 useless extension candidates. Maximal degree in co-relation 64647. Up to 10299 conditions per place. [2024-06-28 00:53:44,428 INFO L140 encePairwiseOnDemand]: 35/45 looper letters, 271 selfloop transitions, 55 changer transitions 0/339 dead transitions. [2024-06-28 00:53:44,428 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 207 places, 339 transitions, 5688 flow [2024-06-28 00:53:44,429 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 00:53:44,429 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 00:53:44,429 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 218 transitions. [2024-06-28 00:53:44,429 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6055555555555555 [2024-06-28 00:53:44,429 INFO L175 Difference]: Start difference. First operand has 200 places, 296 transitions, 4564 flow. Second operand 8 states and 218 transitions. [2024-06-28 00:53:44,429 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 207 places, 339 transitions, 5688 flow [2024-06-28 00:53:45,476 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 203 places, 339 transitions, 5462 flow, removed 23 selfloop flow, removed 4 redundant places. [2024-06-28 00:53:45,481 INFO L231 Difference]: Finished difference. Result has 205 places, 310 transitions, 4760 flow [2024-06-28 00:53:45,482 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=45, PETRI_DIFFERENCE_MINUEND_FLOW=4358, PETRI_DIFFERENCE_MINUEND_PLACES=196, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=296, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=44, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=244, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=4760, PETRI_PLACES=205, PETRI_TRANSITIONS=310} [2024-06-28 00:53:45,482 INFO L281 CegarLoopForPetriNet]: 49 programPoint places, 156 predicate places. [2024-06-28 00:53:45,482 INFO L495 AbstractCegarLoop]: Abstraction has has 205 places, 310 transitions, 4760 flow [2024-06-28 00:53:45,482 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 19.0) internal successors, (133), 7 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) [2024-06-28 00:53:45,482 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:53:45,483 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:53:45,483 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable40 [2024-06-28 00:53:45,483 INFO L420 AbstractCegarLoop]: === Iteration 42 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 00:53:45,483 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:53:45,483 INFO L85 PathProgramCache]: Analyzing trace with hash 761398658, now seen corresponding path program 4 times [2024-06-28 00:53:45,483 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:53:45,483 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [63717981] [2024-06-28 00:53:45,483 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:53:45,484 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:53:45,487 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:53:45,561 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:53:45,561 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:53:45,561 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [63717981] [2024-06-28 00:53:45,561 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [63717981] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:53:45,561 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:53:45,562 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-28 00:53:45,562 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [38528947] [2024-06-28 00:53:45,562 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:53:45,562 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-28 00:53:45,562 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:53:45,562 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-28 00:53:45,563 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2024-06-28 00:53:45,591 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 17 out of 45 [2024-06-28 00:53:45,591 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 205 places, 310 transitions, 4760 flow. Second operand has 7 states, 7 states have (on average 19.0) internal successors, (133), 7 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) [2024-06-28 00:53:45,591 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:53:45,591 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 17 of 45 [2024-06-28 00:53:45,591 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:53:47,063 INFO L124 PetriNetUnfolderBase]: 6886/11478 cut-off events. [2024-06-28 00:53:47,064 INFO L125 PetriNetUnfolderBase]: For 251056/251065 co-relation queries the response was YES. [2024-06-28 00:53:47,139 INFO L83 FinitePrefix]: Finished finitePrefix Result has 64684 conditions, 11478 events. 6886/11478 cut-off events. For 251056/251065 co-relation queries the response was YES. Maximal size of possible extension queue 801. Compared 90933 event pairs, 2366 based on Foata normal form. 8/11474 useless extension candidates. Maximal degree in co-relation 64585. Up to 10294 conditions per place. [2024-06-28 00:53:47,185 INFO L140 encePairwiseOnDemand]: 35/45 looper letters, 271 selfloop transitions, 55 changer transitions 0/339 dead transitions. [2024-06-28 00:53:47,185 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 212 places, 339 transitions, 5624 flow [2024-06-28 00:53:47,185 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 00:53:47,185 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 00:53:47,186 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 218 transitions. [2024-06-28 00:53:47,186 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6055555555555555 [2024-06-28 00:53:47,186 INFO L175 Difference]: Start difference. First operand has 205 places, 310 transitions, 4760 flow. Second operand 8 states and 218 transitions. [2024-06-28 00:53:47,186 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 212 places, 339 transitions, 5624 flow [2024-06-28 00:53:48,272 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 209 places, 339 transitions, 5535 flow, removed 28 selfloop flow, removed 3 redundant places. [2024-06-28 00:53:48,277 INFO L231 Difference]: Finished difference. Result has 210 places, 310 transitions, 4788 flow [2024-06-28 00:53:48,277 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=45, PETRI_DIFFERENCE_MINUEND_FLOW=4671, PETRI_DIFFERENCE_MINUEND_PLACES=202, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=310, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=55, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=255, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=4788, PETRI_PLACES=210, PETRI_TRANSITIONS=310} [2024-06-28 00:53:48,281 INFO L281 CegarLoopForPetriNet]: 49 programPoint places, 161 predicate places. [2024-06-28 00:53:48,281 INFO L495 AbstractCegarLoop]: Abstraction has has 210 places, 310 transitions, 4788 flow [2024-06-28 00:53:48,281 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 19.0) internal successors, (133), 7 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) [2024-06-28 00:53:48,281 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:53:48,282 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:53:48,282 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable41 [2024-06-28 00:53:48,282 INFO L420 AbstractCegarLoop]: === Iteration 43 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 00:53:48,282 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:53:48,282 INFO L85 PathProgramCache]: Analyzing trace with hash -987848576, now seen corresponding path program 2 times [2024-06-28 00:53:48,282 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:53:48,282 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1461925120] [2024-06-28 00:53:48,282 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:53:48,283 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:53:48,286 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:53:48,358 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:53:48,358 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:53:48,358 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1461925120] [2024-06-28 00:53:48,360 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1461925120] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:53:48,360 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:53:48,360 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-28 00:53:48,360 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [512118164] [2024-06-28 00:53:48,361 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:53:48,361 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-28 00:53:48,361 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:53:48,362 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-28 00:53:48,363 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2024-06-28 00:53:48,393 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 17 out of 45 [2024-06-28 00:53:48,393 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 210 places, 310 transitions, 4788 flow. Second operand has 7 states, 7 states have (on average 19.0) internal successors, (133), 7 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) [2024-06-28 00:53:48,393 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:53:48,393 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 17 of 45 [2024-06-28 00:53:48,393 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:53:49,859 INFO L124 PetriNetUnfolderBase]: 6925/11367 cut-off events. [2024-06-28 00:53:49,859 INFO L125 PetriNetUnfolderBase]: For 260948/260960 co-relation queries the response was YES. [2024-06-28 00:53:49,941 INFO L83 FinitePrefix]: Finished finitePrefix Result has 65490 conditions, 11367 events. 6925/11367 cut-off events. For 260948/260960 co-relation queries the response was YES. Maximal size of possible extension queue 797. Compared 89007 event pairs, 2091 based on Foata normal form. 9/11359 useless extension candidates. Maximal degree in co-relation 65389. Up to 10103 conditions per place. [2024-06-28 00:53:49,988 INFO L140 encePairwiseOnDemand]: 35/45 looper letters, 221 selfloop transitions, 112 changer transitions 0/346 dead transitions. [2024-06-28 00:53:49,988 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 216 places, 346 transitions, 5920 flow [2024-06-28 00:53:49,988 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 00:53:49,988 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 00:53:49,988 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 197 transitions. [2024-06-28 00:53:49,989 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6253968253968254 [2024-06-28 00:53:49,989 INFO L175 Difference]: Start difference. First operand has 210 places, 310 transitions, 4788 flow. Second operand 7 states and 197 transitions. [2024-06-28 00:53:49,989 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 216 places, 346 transitions, 5920 flow [2024-06-28 00:53:51,338 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 210 places, 346 transitions, 5764 flow, removed 24 selfloop flow, removed 6 redundant places. [2024-06-28 00:53:51,344 INFO L231 Difference]: Finished difference. Result has 211 places, 319 transitions, 5046 flow [2024-06-28 00:53:51,345 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=45, PETRI_DIFFERENCE_MINUEND_FLOW=4632, PETRI_DIFFERENCE_MINUEND_PLACES=204, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=310, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=106, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=204, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=5046, PETRI_PLACES=211, PETRI_TRANSITIONS=319} [2024-06-28 00:53:51,345 INFO L281 CegarLoopForPetriNet]: 49 programPoint places, 162 predicate places. [2024-06-28 00:53:51,345 INFO L495 AbstractCegarLoop]: Abstraction has has 211 places, 319 transitions, 5046 flow [2024-06-28 00:53:51,345 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 19.0) internal successors, (133), 7 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) [2024-06-28 00:53:51,345 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:53:51,345 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:53:51,345 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable42 [2024-06-28 00:53:51,346 INFO L420 AbstractCegarLoop]: === Iteration 44 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 00:53:51,346 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:53:51,346 INFO L85 PathProgramCache]: Analyzing trace with hash -982134656, now seen corresponding path program 3 times [2024-06-28 00:53:51,346 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:53:51,346 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1486522722] [2024-06-28 00:53:51,346 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:53:51,346 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:53:51,351 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:53:51,449 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:53:51,449 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:53:51,450 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1486522722] [2024-06-28 00:53:51,450 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1486522722] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:53:51,450 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:53:51,450 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-28 00:53:51,450 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2066937248] [2024-06-28 00:53:51,450 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:53:51,450 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-28 00:53:51,451 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:53:51,451 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-28 00:53:51,451 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2024-06-28 00:53:51,501 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 17 out of 45 [2024-06-28 00:53:51,501 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 211 places, 319 transitions, 5046 flow. Second operand has 7 states, 7 states have (on average 19.0) internal successors, (133), 7 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) [2024-06-28 00:53:51,502 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:53:51,502 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 17 of 45 [2024-06-28 00:53:51,502 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:53:53,171 INFO L124 PetriNetUnfolderBase]: 6936/11390 cut-off events. [2024-06-28 00:53:53,171 INFO L125 PetriNetUnfolderBase]: For 271251/271263 co-relation queries the response was YES. [2024-06-28 00:53:53,246 INFO L83 FinitePrefix]: Finished finitePrefix Result has 66144 conditions, 11390 events. 6936/11390 cut-off events. For 271251/271263 co-relation queries the response was YES. Maximal size of possible extension queue 799. Compared 89238 event pairs, 2097 based on Foata normal form. 9/11382 useless extension candidates. Maximal degree in co-relation 66042. Up to 10111 conditions per place. [2024-06-28 00:53:53,294 INFO L140 encePairwiseOnDemand]: 35/45 looper letters, 221 selfloop transitions, 114 changer transitions 0/348 dead transitions. [2024-06-28 00:53:53,294 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 217 places, 348 transitions, 5996 flow [2024-06-28 00:53:53,294 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 00:53:53,294 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 00:53:53,295 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 195 transitions. [2024-06-28 00:53:53,295 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6190476190476191 [2024-06-28 00:53:53,295 INFO L175 Difference]: Start difference. First operand has 211 places, 319 transitions, 5046 flow. Second operand 7 states and 195 transitions. [2024-06-28 00:53:53,295 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 217 places, 348 transitions, 5996 flow [2024-06-28 00:53:54,696 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 216 places, 348 transitions, 5867 flow, removed 55 selfloop flow, removed 1 redundant places. [2024-06-28 00:53:54,701 INFO L231 Difference]: Finished difference. Result has 217 places, 322 transitions, 5217 flow [2024-06-28 00:53:54,701 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=45, PETRI_DIFFERENCE_MINUEND_FLOW=4939, PETRI_DIFFERENCE_MINUEND_PLACES=210, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=319, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=111, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=208, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=5217, PETRI_PLACES=217, PETRI_TRANSITIONS=322} [2024-06-28 00:53:54,702 INFO L281 CegarLoopForPetriNet]: 49 programPoint places, 168 predicate places. [2024-06-28 00:53:54,702 INFO L495 AbstractCegarLoop]: Abstraction has has 217 places, 322 transitions, 5217 flow [2024-06-28 00:53:54,702 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 19.0) internal successors, (133), 7 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) [2024-06-28 00:53:54,702 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:53:54,702 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:53:54,702 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable43 [2024-06-28 00:53:54,702 INFO L420 AbstractCegarLoop]: === Iteration 45 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 00:53:54,703 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:53:54,703 INFO L85 PathProgramCache]: Analyzing trace with hash 1185872540, now seen corresponding path program 4 times [2024-06-28 00:53:54,703 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:53:54,703 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1373607646] [2024-06-28 00:53:54,703 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:53:54,703 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:53:54,707 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:53:54,790 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:53:54,790 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:53:54,790 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1373607646] [2024-06-28 00:53:54,791 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1373607646] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:53:54,791 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:53:54,791 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-28 00:53:54,791 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1139648862] [2024-06-28 00:53:54,791 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:53:54,791 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-28 00:53:54,791 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:53:54,792 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-28 00:53:54,792 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2024-06-28 00:53:54,819 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 17 out of 45 [2024-06-28 00:53:54,820 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 217 places, 322 transitions, 5217 flow. Second operand has 7 states, 7 states have (on average 19.0) internal successors, (133), 7 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) [2024-06-28 00:53:54,820 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:53:54,820 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 17 of 45 [2024-06-28 00:53:54,820 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:53:56,402 INFO L124 PetriNetUnfolderBase]: 6930/11681 cut-off events. [2024-06-28 00:53:56,402 INFO L125 PetriNetUnfolderBase]: For 284304/284313 co-relation queries the response was YES. [2024-06-28 00:53:56,490 INFO L83 FinitePrefix]: Finished finitePrefix Result has 66926 conditions, 11681 events. 6930/11681 cut-off events. For 284304/284313 co-relation queries the response was YES. Maximal size of possible extension queue 812. Compared 93802 event pairs, 2366 based on Foata normal form. 8/11677 useless extension candidates. Maximal degree in co-relation 66822. Up to 10106 conditions per place. [2024-06-28 00:53:56,543 INFO L140 encePairwiseOnDemand]: 35/45 looper letters, 226 selfloop transitions, 115 changer transitions 0/354 dead transitions. [2024-06-28 00:53:56,543 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 224 places, 354 transitions, 6131 flow [2024-06-28 00:53:56,544 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 00:53:56,545 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 00:53:56,545 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 223 transitions. [2024-06-28 00:53:56,547 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6194444444444445 [2024-06-28 00:53:56,547 INFO L175 Difference]: Start difference. First operand has 217 places, 322 transitions, 5217 flow. Second operand 8 states and 223 transitions. [2024-06-28 00:53:56,547 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 224 places, 354 transitions, 6131 flow [2024-06-28 00:53:57,751 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 220 places, 354 transitions, 5913 flow, removed 22 selfloop flow, removed 4 redundant places. [2024-06-28 00:53:57,756 INFO L231 Difference]: Finished difference. Result has 221 places, 322 transitions, 5241 flow [2024-06-28 00:53:57,756 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=45, PETRI_DIFFERENCE_MINUEND_FLOW=4999, PETRI_DIFFERENCE_MINUEND_PLACES=213, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=322, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=115, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=207, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=5241, PETRI_PLACES=221, PETRI_TRANSITIONS=322} [2024-06-28 00:53:57,756 INFO L281 CegarLoopForPetriNet]: 49 programPoint places, 172 predicate places. [2024-06-28 00:53:57,756 INFO L495 AbstractCegarLoop]: Abstraction has has 221 places, 322 transitions, 5241 flow [2024-06-28 00:53:57,757 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 19.0) internal successors, (133), 7 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) [2024-06-28 00:53:57,757 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:53:57,757 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:53:57,757 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable44 [2024-06-28 00:53:57,757 INFO L420 AbstractCegarLoop]: === Iteration 46 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 00:53:57,757 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:53:57,757 INFO L85 PathProgramCache]: Analyzing trace with hash 1185693794, now seen corresponding path program 5 times [2024-06-28 00:53:57,757 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:53:57,758 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2127301732] [2024-06-28 00:53:57,758 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:53:57,758 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:53:57,761 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:53:57,840 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:53:57,841 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:53:57,841 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2127301732] [2024-06-28 00:53:57,841 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2127301732] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:53:57,841 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:53:57,841 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-28 00:53:57,841 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1803291706] [2024-06-28 00:53:57,842 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:53:57,842 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-28 00:53:57,842 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:53:57,843 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-28 00:53:57,843 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2024-06-28 00:53:57,875 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 17 out of 45 [2024-06-28 00:53:57,875 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 221 places, 322 transitions, 5241 flow. Second operand has 7 states, 7 states have (on average 19.0) internal successors, (133), 7 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) [2024-06-28 00:53:57,875 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:53:57,875 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 17 of 45 [2024-06-28 00:53:57,875 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:53:59,451 INFO L124 PetriNetUnfolderBase]: 6924/11622 cut-off events. [2024-06-28 00:53:59,451 INFO L125 PetriNetUnfolderBase]: For 291310/291319 co-relation queries the response was YES. [2024-06-28 00:53:59,539 INFO L83 FinitePrefix]: Finished finitePrefix Result has 66998 conditions, 11622 events. 6924/11622 cut-off events. For 291310/291319 co-relation queries the response was YES. Maximal size of possible extension queue 808. Compared 92829 event pairs, 2348 based on Foata normal form. 8/11619 useless extension candidates. Maximal degree in co-relation 66893. Up to 10101 conditions per place. [2024-06-28 00:53:59,590 INFO L140 encePairwiseOnDemand]: 35/45 looper letters, 224 selfloop transitions, 120 changer transitions 0/357 dead transitions. [2024-06-28 00:53:59,590 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 228 places, 357 transitions, 6173 flow [2024-06-28 00:53:59,590 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 00:53:59,590 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 00:53:59,591 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 226 transitions. [2024-06-28 00:53:59,591 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6277777777777778 [2024-06-28 00:53:59,591 INFO L175 Difference]: Start difference. First operand has 221 places, 322 transitions, 5241 flow. Second operand 8 states and 226 transitions. [2024-06-28 00:53:59,591 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 228 places, 357 transitions, 6173 flow [2024-06-28 00:54:01,251 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 221 places, 357 transitions, 5834 flow, removed 26 selfloop flow, removed 7 redundant places. [2024-06-28 00:54:01,255 INFO L231 Difference]: Finished difference. Result has 222 places, 322 transitions, 5162 flow [2024-06-28 00:54:01,256 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=45, PETRI_DIFFERENCE_MINUEND_FLOW=4906, PETRI_DIFFERENCE_MINUEND_PLACES=214, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=322, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=120, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=202, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=5162, PETRI_PLACES=222, PETRI_TRANSITIONS=322} [2024-06-28 00:54:01,256 INFO L281 CegarLoopForPetriNet]: 49 programPoint places, 173 predicate places. [2024-06-28 00:54:01,256 INFO L495 AbstractCegarLoop]: Abstraction has has 222 places, 322 transitions, 5162 flow [2024-06-28 00:54:01,257 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 19.0) internal successors, (133), 7 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) [2024-06-28 00:54:01,257 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:54:01,257 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:54:01,257 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable45 [2024-06-28 00:54:01,257 INFO L420 AbstractCegarLoop]: === Iteration 47 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 00:54:01,257 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:54:01,257 INFO L85 PathProgramCache]: Analyzing trace with hash -987839648, now seen corresponding path program 1 times [2024-06-28 00:54:01,258 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:54:01,258 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [392925669] [2024-06-28 00:54:01,258 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:54:01,258 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:54:01,262 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:54:01,343 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:54:01,343 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:54:01,343 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [392925669] [2024-06-28 00:54:01,343 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [392925669] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:54:01,343 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:54:01,343 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-28 00:54:01,344 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [946466618] [2024-06-28 00:54:01,344 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:54:01,344 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-28 00:54:01,344 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:54:01,344 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-28 00:54:01,360 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2024-06-28 00:54:01,428 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 18 out of 45 [2024-06-28 00:54:01,429 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 222 places, 322 transitions, 5162 flow. Second operand has 7 states, 7 states have (on average 20.0) internal successors, (140), 7 states have internal predecessors, (140), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:54:01,429 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:54:01,429 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 18 of 45 [2024-06-28 00:54:01,429 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:54:02,974 INFO L124 PetriNetUnfolderBase]: 6727/11198 cut-off events. [2024-06-28 00:54:02,974 INFO L125 PetriNetUnfolderBase]: For 293891/293920 co-relation queries the response was YES. [2024-06-28 00:54:03,066 INFO L83 FinitePrefix]: Finished finitePrefix Result has 65089 conditions, 11198 events. 6727/11198 cut-off events. For 293891/293920 co-relation queries the response was YES. Maximal size of possible extension queue 798. Compared 88870 event pairs, 3390 based on Foata normal form. 36/11115 useless extension candidates. Maximal degree in co-relation 64984. Up to 9829 conditions per place. [2024-06-28 00:54:03,116 INFO L140 encePairwiseOnDemand]: 38/45 looper letters, 261 selfloop transitions, 25 changer transitions 0/345 dead transitions. [2024-06-28 00:54:03,116 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 227 places, 345 transitions, 5818 flow [2024-06-28 00:54:03,116 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-28 00:54:03,117 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-28 00:54:03,117 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 167 transitions. [2024-06-28 00:54:03,117 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6185185185185185 [2024-06-28 00:54:03,117 INFO L175 Difference]: Start difference. First operand has 222 places, 322 transitions, 5162 flow. Second operand 6 states and 167 transitions. [2024-06-28 00:54:03,117 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 227 places, 345 transitions, 5818 flow [2024-06-28 00:54:04,256 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 217 places, 345 transitions, 5440 flow, removed 1 selfloop flow, removed 10 redundant places. [2024-06-28 00:54:04,261 INFO L231 Difference]: Finished difference. Result has 218 places, 323 transitions, 4858 flow [2024-06-28 00:54:04,261 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=45, PETRI_DIFFERENCE_MINUEND_FLOW=4784, PETRI_DIFFERENCE_MINUEND_PLACES=212, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=322, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=24, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=297, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=4858, PETRI_PLACES=218, PETRI_TRANSITIONS=323} [2024-06-28 00:54:04,261 INFO L281 CegarLoopForPetriNet]: 49 programPoint places, 169 predicate places. [2024-06-28 00:54:04,261 INFO L495 AbstractCegarLoop]: Abstraction has has 218 places, 323 transitions, 4858 flow [2024-06-28 00:54:04,262 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 20.0) internal successors, (140), 7 states have internal predecessors, (140), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:54:04,262 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:54:04,262 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:54:04,262 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable46 [2024-06-28 00:54:04,262 INFO L420 AbstractCegarLoop]: === Iteration 48 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 00:54:04,262 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:54:04,262 INFO L85 PathProgramCache]: Analyzing trace with hash -987422078, now seen corresponding path program 2 times [2024-06-28 00:54:04,262 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:54:04,262 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1792371381] [2024-06-28 00:54:04,262 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:54:04,262 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:54:04,266 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:54:04,360 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:54:04,360 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:54:04,360 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1792371381] [2024-06-28 00:54:04,360 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1792371381] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:54:04,361 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:54:04,361 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-28 00:54:04,361 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1942030756] [2024-06-28 00:54:04,361 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:54:04,361 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-28 00:54:04,361 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:54:04,362 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-28 00:54:04,362 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2024-06-28 00:54:04,406 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 18 out of 45 [2024-06-28 00:54:04,407 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 218 places, 323 transitions, 4858 flow. Second operand has 7 states, 7 states have (on average 20.0) internal successors, (140), 7 states have internal predecessors, (140), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:54:04,407 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:54:04,407 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 18 of 45 [2024-06-28 00:54:04,407 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:54:06,109 INFO L124 PetriNetUnfolderBase]: 6755/11238 cut-off events. [2024-06-28 00:54:06,109 INFO L125 PetriNetUnfolderBase]: For 285787/285816 co-relation queries the response was YES. [2024-06-28 00:54:06,189 INFO L83 FinitePrefix]: Finished finitePrefix Result has 64525 conditions, 11238 events. 6755/11238 cut-off events. For 285787/285816 co-relation queries the response was YES. Maximal size of possible extension queue 801. Compared 89254 event pairs, 3284 based on Foata normal form. 35/11162 useless extension candidates. Maximal degree in co-relation 64420. Up to 9679 conditions per place. [2024-06-28 00:54:06,242 INFO L140 encePairwiseOnDemand]: 38/45 looper letters, 262 selfloop transitions, 28 changer transitions 0/349 dead transitions. [2024-06-28 00:54:06,242 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 223 places, 349 transitions, 5542 flow [2024-06-28 00:54:06,243 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-28 00:54:06,243 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-28 00:54:06,243 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 169 transitions. [2024-06-28 00:54:06,243 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6259259259259259 [2024-06-28 00:54:06,244 INFO L175 Difference]: Start difference. First operand has 218 places, 323 transitions, 4858 flow. Second operand 6 states and 169 transitions. [2024-06-28 00:54:06,244 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 223 places, 349 transitions, 5542 flow [2024-06-28 00:54:07,370 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 219 places, 349 transitions, 5486 flow, removed 5 selfloop flow, removed 4 redundant places. [2024-06-28 00:54:07,374 INFO L231 Difference]: Finished difference. Result has 220 places, 324 transitions, 4882 flow [2024-06-28 00:54:07,375 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=45, PETRI_DIFFERENCE_MINUEND_FLOW=4802, PETRI_DIFFERENCE_MINUEND_PLACES=214, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=323, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=27, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=295, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=4882, PETRI_PLACES=220, PETRI_TRANSITIONS=324} [2024-06-28 00:54:07,375 INFO L281 CegarLoopForPetriNet]: 49 programPoint places, 171 predicate places. [2024-06-28 00:54:07,375 INFO L495 AbstractCegarLoop]: Abstraction has has 220 places, 324 transitions, 4882 flow [2024-06-28 00:54:07,375 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 20.0) internal successors, (140), 7 states have internal predecessors, (140), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:54:07,376 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:54:07,376 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:54:07,376 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable47 [2024-06-28 00:54:07,376 INFO L420 AbstractCegarLoop]: === Iteration 49 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 00:54:07,376 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:54:07,376 INFO L85 PathProgramCache]: Analyzing trace with hash -353873272, now seen corresponding path program 1 times [2024-06-28 00:54:07,376 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:54:07,377 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1588780557] [2024-06-28 00:54:07,377 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:54:07,377 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:54:07,381 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:54:07,471 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:54:07,471 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:54:07,472 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1588780557] [2024-06-28 00:54:07,472 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1588780557] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:54:07,472 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:54:07,472 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-28 00:54:07,472 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [605761930] [2024-06-28 00:54:07,472 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:54:07,472 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-28 00:54:07,472 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:54:07,473 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-28 00:54:07,473 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2024-06-28 00:54:07,508 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 17 out of 45 [2024-06-28 00:54:07,508 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 220 places, 324 transitions, 4882 flow. Second operand has 7 states, 7 states have (on average 19.0) internal successors, (133), 7 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) [2024-06-28 00:54:07,509 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:54:07,509 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 17 of 45 [2024-06-28 00:54:07,509 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:54:09,121 INFO L124 PetriNetUnfolderBase]: 7042/11647 cut-off events. [2024-06-28 00:54:09,121 INFO L125 PetriNetUnfolderBase]: For 294426/294426 co-relation queries the response was YES. [2024-06-28 00:54:09,210 INFO L83 FinitePrefix]: Finished finitePrefix Result has 67286 conditions, 11647 events. 7042/11647 cut-off events. For 294426/294426 co-relation queries the response was YES. Maximal size of possible extension queue 823. Compared 91921 event pairs, 3372 based on Foata normal form. 2/11612 useless extension candidates. Maximal degree in co-relation 67180. Up to 10375 conditions per place. [2024-06-28 00:54:09,259 INFO L140 encePairwiseOnDemand]: 36/45 looper letters, 305 selfloop transitions, 51 changer transitions 0/369 dead transitions. [2024-06-28 00:54:09,259 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 226 places, 369 transitions, 5966 flow [2024-06-28 00:54:09,260 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 00:54:09,260 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 00:54:09,260 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 201 transitions. [2024-06-28 00:54:09,260 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.638095238095238 [2024-06-28 00:54:09,260 INFO L175 Difference]: Start difference. First operand has 220 places, 324 transitions, 4882 flow. Second operand 7 states and 201 transitions. [2024-06-28 00:54:09,260 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 226 places, 369 transitions, 5966 flow [2024-06-28 00:54:10,432 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 222 places, 369 transitions, 5898 flow, removed 6 selfloop flow, removed 4 redundant places. [2024-06-28 00:54:10,436 INFO L231 Difference]: Finished difference. Result has 224 places, 330 transitions, 5077 flow [2024-06-28 00:54:10,437 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=45, PETRI_DIFFERENCE_MINUEND_FLOW=4816, PETRI_DIFFERENCE_MINUEND_PLACES=216, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=324, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=47, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=275, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=5077, PETRI_PLACES=224, PETRI_TRANSITIONS=330} [2024-06-28 00:54:10,437 INFO L281 CegarLoopForPetriNet]: 49 programPoint places, 175 predicate places. [2024-06-28 00:54:10,437 INFO L495 AbstractCegarLoop]: Abstraction has has 224 places, 330 transitions, 5077 flow [2024-06-28 00:54:10,437 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 19.0) internal successors, (133), 7 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) [2024-06-28 00:54:10,437 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:54:10,437 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:54:10,437 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable48 [2024-06-28 00:54:10,437 INFO L420 AbstractCegarLoop]: === Iteration 50 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 00:54:10,438 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:54:10,438 INFO L85 PathProgramCache]: Analyzing trace with hash 1855222432, now seen corresponding path program 2 times [2024-06-28 00:54:10,438 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:54:10,438 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1733159281] [2024-06-28 00:54:10,438 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:54:10,438 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:54:10,442 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:54:10,525 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:54:10,526 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:54:10,526 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1733159281] [2024-06-28 00:54:10,526 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1733159281] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:54:10,526 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:54:10,526 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-28 00:54:10,526 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1418591329] [2024-06-28 00:54:10,526 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:54:10,526 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-28 00:54:10,526 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:54:10,527 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-28 00:54:10,527 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2024-06-28 00:54:10,555 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 17 out of 45 [2024-06-28 00:54:10,555 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 224 places, 330 transitions, 5077 flow. Second operand has 7 states, 7 states have (on average 19.0) internal successors, (133), 7 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) [2024-06-28 00:54:10,555 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:54:10,555 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 17 of 45 [2024-06-28 00:54:10,556 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:54:12,296 INFO L124 PetriNetUnfolderBase]: 7037/11707 cut-off events. [2024-06-28 00:54:12,296 INFO L125 PetriNetUnfolderBase]: For 305824/305824 co-relation queries the response was YES. [2024-06-28 00:54:12,392 INFO L83 FinitePrefix]: Finished finitePrefix Result has 67639 conditions, 11707 events. 7037/11707 cut-off events. For 305824/305824 co-relation queries the response was YES. Maximal size of possible extension queue 831. Compared 93053 event pairs, 3481 based on Foata normal form. 2/11666 useless extension candidates. Maximal degree in co-relation 67531. Up to 10587 conditions per place. [2024-06-28 00:54:12,442 INFO L140 encePairwiseOnDemand]: 36/45 looper letters, 304 selfloop transitions, 44 changer transitions 0/361 dead transitions. [2024-06-28 00:54:12,442 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 230 places, 361 transitions, 5887 flow [2024-06-28 00:54:12,443 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 00:54:12,443 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 00:54:12,443 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 193 transitions. [2024-06-28 00:54:12,443 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6126984126984127 [2024-06-28 00:54:12,443 INFO L175 Difference]: Start difference. First operand has 224 places, 330 transitions, 5077 flow. Second operand 7 states and 193 transitions. [2024-06-28 00:54:12,443 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 230 places, 361 transitions, 5887 flow [2024-06-28 00:54:13,615 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 228 places, 361 transitions, 5748 flow, removed 47 selfloop flow, removed 2 redundant places. [2024-06-28 00:54:13,620 INFO L231 Difference]: Finished difference. Result has 229 places, 330 transitions, 5031 flow [2024-06-28 00:54:13,621 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=45, PETRI_DIFFERENCE_MINUEND_FLOW=4938, PETRI_DIFFERENCE_MINUEND_PLACES=222, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=330, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=44, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=286, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=5031, PETRI_PLACES=229, PETRI_TRANSITIONS=330} [2024-06-28 00:54:13,621 INFO L281 CegarLoopForPetriNet]: 49 programPoint places, 180 predicate places. [2024-06-28 00:54:13,621 INFO L495 AbstractCegarLoop]: Abstraction has has 229 places, 330 transitions, 5031 flow [2024-06-28 00:54:13,621 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 19.0) internal successors, (133), 7 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) [2024-06-28 00:54:13,621 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:54:13,622 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:54:13,622 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable49 [2024-06-28 00:54:13,622 INFO L420 AbstractCegarLoop]: === Iteration 51 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 00:54:13,622 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:54:13,622 INFO L85 PathProgramCache]: Analyzing trace with hash -235540444, now seen corresponding path program 1 times [2024-06-28 00:54:13,622 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:54:13,622 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [174103637] [2024-06-28 00:54:13,623 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:54:13,623 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:54:13,627 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:54:13,721 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:54:13,721 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:54:13,721 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [174103637] [2024-06-28 00:54:13,721 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [174103637] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:54:13,721 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:54:13,721 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-28 00:54:13,721 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1955983011] [2024-06-28 00:54:13,721 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:54:13,722 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-28 00:54:13,722 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:54:13,722 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-28 00:54:13,722 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2024-06-28 00:54:13,749 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 17 out of 45 [2024-06-28 00:54:13,749 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 229 places, 330 transitions, 5031 flow. Second operand has 7 states, 7 states have (on average 19.0) internal successors, (133), 7 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) [2024-06-28 00:54:13,749 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:54:13,749 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 17 of 45 [2024-06-28 00:54:13,749 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:54:15,444 INFO L124 PetriNetUnfolderBase]: 7178/11735 cut-off events. [2024-06-28 00:54:15,444 INFO L125 PetriNetUnfolderBase]: For 330235/330244 co-relation queries the response was YES. [2024-06-28 00:54:15,539 INFO L83 FinitePrefix]: Finished finitePrefix Result has 68655 conditions, 11735 events. 7178/11735 cut-off events. For 330235/330244 co-relation queries the response was YES. Maximal size of possible extension queue 833. Compared 92046 event pairs, 2096 based on Foata normal form. 26/11757 useless extension candidates. Maximal degree in co-relation 68544. Up to 10600 conditions per place. [2024-06-28 00:54:15,589 INFO L140 encePairwiseOnDemand]: 35/45 looper letters, 306 selfloop transitions, 45 changer transitions 0/364 dead transitions. [2024-06-28 00:54:15,589 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 236 places, 364 transitions, 5885 flow [2024-06-28 00:54:15,589 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 00:54:15,589 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 00:54:15,590 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 219 transitions. [2024-06-28 00:54:15,590 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6083333333333333 [2024-06-28 00:54:15,590 INFO L175 Difference]: Start difference. First operand has 229 places, 330 transitions, 5031 flow. Second operand 8 states and 219 transitions. [2024-06-28 00:54:15,590 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 236 places, 364 transitions, 5885 flow [2024-06-28 00:54:16,963 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 231 places, 364 transitions, 5786 flow, removed 7 selfloop flow, removed 5 redundant places. [2024-06-28 00:54:16,967 INFO L231 Difference]: Finished difference. Result has 232 places, 333 transitions, 5099 flow [2024-06-28 00:54:16,967 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=45, PETRI_DIFFERENCE_MINUEND_FLOW=4932, PETRI_DIFFERENCE_MINUEND_PLACES=224, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=330, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=42, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=285, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=5099, PETRI_PLACES=232, PETRI_TRANSITIONS=333} [2024-06-28 00:54:16,968 INFO L281 CegarLoopForPetriNet]: 49 programPoint places, 183 predicate places. [2024-06-28 00:54:16,968 INFO L495 AbstractCegarLoop]: Abstraction has has 232 places, 333 transitions, 5099 flow [2024-06-28 00:54:16,968 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 19.0) internal successors, (133), 7 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) [2024-06-28 00:54:16,968 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:54:16,968 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:54:16,968 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable50 [2024-06-28 00:54:16,968 INFO L420 AbstractCegarLoop]: === Iteration 52 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 00:54:16,968 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:54:16,968 INFO L85 PathProgramCache]: Analyzing trace with hash -1210020926, now seen corresponding path program 2 times [2024-06-28 00:54:16,968 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:54:16,969 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2082214547] [2024-06-28 00:54:16,969 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:54:16,969 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:54:16,973 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:54:17,064 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:54:17,064 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:54:17,064 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2082214547] [2024-06-28 00:54:17,064 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2082214547] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:54:17,064 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:54:17,064 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-28 00:54:17,064 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [998269696] [2024-06-28 00:54:17,064 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:54:17,064 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-28 00:54:17,065 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:54:17,065 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-28 00:54:17,065 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2024-06-28 00:54:17,097 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 17 out of 45 [2024-06-28 00:54:17,098 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 232 places, 333 transitions, 5099 flow. Second operand has 7 states, 7 states have (on average 19.0) internal successors, (133), 7 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) [2024-06-28 00:54:17,098 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:54:17,098 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 17 of 45 [2024-06-28 00:54:17,098 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:54:18,851 INFO L124 PetriNetUnfolderBase]: 7378/12337 cut-off events. [2024-06-28 00:54:18,852 INFO L125 PetriNetUnfolderBase]: For 354538/354547 co-relation queries the response was YES. [2024-06-28 00:54:18,944 INFO L83 FinitePrefix]: Finished finitePrefix Result has 71032 conditions, 12337 events. 7378/12337 cut-off events. For 354538/354547 co-relation queries the response was YES. Maximal size of possible extension queue 871. Compared 99110 event pairs, 2425 based on Foata normal form. 36/12362 useless extension candidates. Maximal degree in co-relation 70920. Up to 10483 conditions per place. [2024-06-28 00:54:18,997 INFO L140 encePairwiseOnDemand]: 35/45 looper letters, 269 selfloop transitions, 90 changer transitions 0/372 dead transitions. [2024-06-28 00:54:18,997 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 239 places, 372 transitions, 6005 flow [2024-06-28 00:54:18,997 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 00:54:18,997 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 00:54:18,997 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 224 transitions. [2024-06-28 00:54:18,998 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6222222222222222 [2024-06-28 00:54:18,998 INFO L175 Difference]: Start difference. First operand has 232 places, 333 transitions, 5099 flow. Second operand 8 states and 224 transitions. [2024-06-28 00:54:18,998 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 239 places, 372 transitions, 6005 flow [2024-06-28 00:54:20,646 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 233 places, 372 transitions, 5874 flow, removed 24 selfloop flow, removed 6 redundant places. [2024-06-28 00:54:20,651 INFO L231 Difference]: Finished difference. Result has 234 places, 338 transitions, 5268 flow [2024-06-28 00:54:20,651 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=45, PETRI_DIFFERENCE_MINUEND_FLOW=4968, PETRI_DIFFERENCE_MINUEND_PLACES=226, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=333, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=85, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=243, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=5268, PETRI_PLACES=234, PETRI_TRANSITIONS=338} [2024-06-28 00:54:20,651 INFO L281 CegarLoopForPetriNet]: 49 programPoint places, 185 predicate places. [2024-06-28 00:54:20,652 INFO L495 AbstractCegarLoop]: Abstraction has has 234 places, 338 transitions, 5268 flow [2024-06-28 00:54:20,652 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 19.0) internal successors, (133), 7 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) [2024-06-28 00:54:20,652 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:54:20,652 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:54:20,652 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable51 [2024-06-28 00:54:20,652 INFO L420 AbstractCegarLoop]: === Iteration 53 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 00:54:20,652 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:54:20,652 INFO L85 PathProgramCache]: Analyzing trace with hash -982119776, now seen corresponding path program 3 times [2024-06-28 00:54:20,652 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:54:20,652 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [49540955] [2024-06-28 00:54:20,652 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:54:20,652 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:54:20,656 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:54:20,740 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:54:20,740 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:54:20,740 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [49540955] [2024-06-28 00:54:20,740 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [49540955] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:54:20,740 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:54:20,740 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-28 00:54:20,740 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [644086916] [2024-06-28 00:54:20,741 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:54:20,741 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-28 00:54:20,741 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:54:20,741 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-28 00:54:20,741 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2024-06-28 00:54:20,768 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 17 out of 45 [2024-06-28 00:54:20,769 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 234 places, 338 transitions, 5268 flow. Second operand has 7 states, 7 states have (on average 19.0) internal successors, (133), 7 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) [2024-06-28 00:54:20,769 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:54:20,769 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 17 of 45 [2024-06-28 00:54:20,769 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:54:22,566 INFO L124 PetriNetUnfolderBase]: 7354/12035 cut-off events. [2024-06-28 00:54:22,566 INFO L125 PetriNetUnfolderBase]: For 335609/335621 co-relation queries the response was YES. [2024-06-28 00:54:22,673 INFO L83 FinitePrefix]: Finished finitePrefix Result has 70829 conditions, 12035 events. 7354/12035 cut-off events. For 335609/335621 co-relation queries the response was YES. Maximal size of possible extension queue 857. Compared 94785 event pairs, 2147 based on Foata normal form. 12/12030 useless extension candidates. Maximal degree in co-relation 70716. Up to 10845 conditions per place. [2024-06-28 00:54:22,729 INFO L140 encePairwiseOnDemand]: 35/45 looper letters, 270 selfloop transitions, 83 changer transitions 0/366 dead transitions. [2024-06-28 00:54:22,729 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 240 places, 366 transitions, 6080 flow [2024-06-28 00:54:22,730 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 00:54:22,730 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 00:54:22,730 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 194 transitions. [2024-06-28 00:54:22,730 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6158730158730159 [2024-06-28 00:54:22,730 INFO L175 Difference]: Start difference. First operand has 234 places, 338 transitions, 5268 flow. Second operand 7 states and 194 transitions. [2024-06-28 00:54:22,730 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 240 places, 366 transitions, 6080 flow [2024-06-28 00:54:24,719 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 234 places, 366 transitions, 5872 flow, removed 23 selfloop flow, removed 6 redundant places. [2024-06-28 00:54:24,723 INFO L231 Difference]: Finished difference. Result has 235 places, 341 transitions, 5289 flow [2024-06-28 00:54:24,724 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=45, PETRI_DIFFERENCE_MINUEND_FLOW=5060, PETRI_DIFFERENCE_MINUEND_PLACES=228, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=338, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=80, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=255, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=5289, PETRI_PLACES=235, PETRI_TRANSITIONS=341} [2024-06-28 00:54:24,724 INFO L281 CegarLoopForPetriNet]: 49 programPoint places, 186 predicate places. [2024-06-28 00:54:24,724 INFO L495 AbstractCegarLoop]: Abstraction has has 235 places, 341 transitions, 5289 flow [2024-06-28 00:54:24,724 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 19.0) internal successors, (133), 7 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) [2024-06-28 00:54:24,724 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:54:24,724 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:54:24,724 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable52 [2024-06-28 00:54:24,725 INFO L420 AbstractCegarLoop]: === Iteration 54 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 00:54:24,725 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:54:24,725 INFO L85 PathProgramCache]: Analyzing trace with hash -973548896, now seen corresponding path program 4 times [2024-06-28 00:54:24,725 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:54:24,725 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1833659450] [2024-06-28 00:54:24,725 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:54:24,725 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:54:24,729 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:54:24,839 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:54:24,840 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:54:24,840 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1833659450] [2024-06-28 00:54:24,840 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1833659450] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:54:24,840 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:54:24,840 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-28 00:54:24,840 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [308536086] [2024-06-28 00:54:24,840 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:54:24,840 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-28 00:54:24,841 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:54:24,841 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-28 00:54:24,841 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2024-06-28 00:54:24,875 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 17 out of 45 [2024-06-28 00:54:24,875 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 235 places, 341 transitions, 5289 flow. Second operand has 7 states, 7 states have (on average 19.0) internal successors, (133), 7 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) [2024-06-28 00:54:24,875 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:54:24,876 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 17 of 45 [2024-06-28 00:54:24,876 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:54:26,603 INFO L124 PetriNetUnfolderBase]: 7330/11995 cut-off events. [2024-06-28 00:54:26,603 INFO L125 PetriNetUnfolderBase]: For 339473/339485 co-relation queries the response was YES. [2024-06-28 00:54:26,692 INFO L83 FinitePrefix]: Finished finitePrefix Result has 70185 conditions, 11995 events. 7330/11995 cut-off events. For 339473/339485 co-relation queries the response was YES. Maximal size of possible extension queue 854. Compared 94345 event pairs, 2059 based on Foata normal form. 12/11990 useless extension candidates. Maximal degree in co-relation 70071. Up to 10311 conditions per place. [2024-06-28 00:54:26,741 INFO L140 encePairwiseOnDemand]: 35/45 looper letters, 264 selfloop transitions, 95 changer transitions 0/372 dead transitions. [2024-06-28 00:54:26,742 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 241 places, 372 transitions, 6117 flow [2024-06-28 00:54:26,742 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 00:54:26,742 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 00:54:26,742 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 198 transitions. [2024-06-28 00:54:26,743 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6285714285714286 [2024-06-28 00:54:26,743 INFO L175 Difference]: Start difference. First operand has 235 places, 341 transitions, 5289 flow. Second operand 7 states and 198 transitions. [2024-06-28 00:54:26,743 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 241 places, 372 transitions, 6117 flow [2024-06-28 00:54:28,069 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 236 places, 372 transitions, 5928 flow, removed 14 selfloop flow, removed 5 redundant places. [2024-06-28 00:54:28,074 INFO L231 Difference]: Finished difference. Result has 238 places, 343 transitions, 5352 flow [2024-06-28 00:54:28,075 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=45, PETRI_DIFFERENCE_MINUEND_FLOW=5100, PETRI_DIFFERENCE_MINUEND_PLACES=230, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=341, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=93, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=246, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=5352, PETRI_PLACES=238, PETRI_TRANSITIONS=343} [2024-06-28 00:54:28,075 INFO L281 CegarLoopForPetriNet]: 49 programPoint places, 189 predicate places. [2024-06-28 00:54:28,075 INFO L495 AbstractCegarLoop]: Abstraction has has 238 places, 343 transitions, 5352 flow [2024-06-28 00:54:28,076 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 19.0) internal successors, (133), 7 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) [2024-06-28 00:54:28,076 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:54:28,076 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:54:28,076 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable53 [2024-06-28 00:54:28,076 INFO L420 AbstractCegarLoop]: === Iteration 55 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 00:54:28,076 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:54:28,077 INFO L85 PathProgramCache]: Analyzing trace with hash -1220229186, now seen corresponding path program 1 times [2024-06-28 00:54:28,077 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:54:28,077 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [560862335] [2024-06-28 00:54:28,077 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:54:28,077 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:54:28,085 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:54:28,245 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:54:28,245 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:54:28,245 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [560862335] [2024-06-28 00:54:28,247 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [560862335] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:54:28,247 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:54:28,248 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-06-28 00:54:28,248 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1171193056] [2024-06-28 00:54:28,248 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:54:28,248 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-06-28 00:54:28,248 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:54:28,248 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-06-28 00:54:28,249 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-06-28 00:54:28,272 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 21 out of 45 [2024-06-28 00:54:28,272 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 238 places, 343 transitions, 5352 flow. Second operand has 5 states, 5 states have (on average 23.6) internal successors, (118), 5 states have internal predecessors, (118), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:54:28,272 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:54:28,272 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 21 of 45 [2024-06-28 00:54:28,273 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:54:30,538 INFO L292 olderBase$Statistics]: inserting event number 4 for the transition-marking pair ([196] L726-->L729: Formula: (= v_~__unbuffered_p0_EBX~0_1 v_~x~0_1) InVars {~x~0=v_~x~0_1} OutVars{~x~0=v_~x~0_1, ~__unbuffered_p0_EBX~0=v_~__unbuffered_p0_EBX~0_1} AuxVars[] AssignedVars[~__unbuffered_p0_EBX~0][239], [Black: 253#(and (= ~__unbuffered_p0_EAX~0 0) (= ~__unbuffered_p0_EBX~0 0) (= ~x~0 1) (<= 1 ~__unbuffered_cnt~0) (= ~y~0 1) (= ~__unbuffered_p2_EAX~0 0)), Black: 251#(and (= ~__unbuffered_p0_EAX~0 0) (= ~__unbuffered_p0_EBX~0 0) (<= 1 ~__unbuffered_cnt~0) (= ~__unbuffered_p2_EAX~0 0)), 189#true, Black: 252#(and (= ~__unbuffered_p0_EAX~0 0) (= ~__unbuffered_p0_EBX~0 0) (= ~x~0 1) (<= 1 ~__unbuffered_cnt~0) (= ~__unbuffered_p2_EAX~0 0)), 492#true, Black: 518#(and (= ~__unbuffered_cnt~0 0) (= ~__unbuffered_p0_EAX~0 2) (= ~__unbuffered_p0_EBX~0 0) (= ~x~0 1) (= ~__unbuffered_p2_EAX~0 0) (= 2 ~y~0)), Black: 268#(and (= ~__unbuffered_p0_EAX~0 0) (= ~__unbuffered_p0_EBX~0 0) (= ~x~0 1) (<= 1 ~__unbuffered_cnt~0) (= ~y~0 1) (= ~__unbuffered_p2_EAX~0 0)), Black: 530#(and (= ~__unbuffered_cnt~0 0) (= ~__unbuffered_p0_EAX~0 1) (= ~__unbuffered_p0_EBX~0 0) (= ~x~0 1) (= ~y~0 1) (= ~__unbuffered_p2_EAX~0 0)), Black: 281#(and (= ~__unbuffered_p0_EAX~0 0) (= ~__unbuffered_p0_EBX~0 0) (= ~x~0 1) (<= 1 ~__unbuffered_cnt~0) (= ~y~0 1) (= ~__unbuffered_p2_EAX~0 0)), Black: 280#(and (= ~__unbuffered_p0_EAX~0 0) (= ~__unbuffered_p0_EBX~0 0) (= ~x~0 1) (<= 1 ~__unbuffered_cnt~0) (= ~__unbuffered_p2_EAX~0 0)), Black: 542#(and (= ~x~0 0) (= ~__unbuffered_p0_EAX~0 2) (= ~__unbuffered_p0_EBX~0 0) (<= 1 ~__unbuffered_cnt~0) (= ~__unbuffered_p2_EAX~0 0) (= 2 ~y~0)), Black: 552#(and (= ~x~0 0) (= ~__unbuffered_p0_EAX~0 2) (= ~__unbuffered_p0_EBX~0 0) (<= 1 ~__unbuffered_cnt~0) (= ~__unbuffered_p2_EAX~0 0) (= 2 ~y~0)), 246#true, Black: 295#(and (= ~__unbuffered_p0_EBX~0 1) (= ~__unbuffered_p0_EAX~0 0) (= ~x~0 1) (<= 1 ~__unbuffered_cnt~0) (= ~y~0 1) (= ~__unbuffered_p2_EAX~0 0)), Black: 562#(and (= ~__unbuffered_p2_EAX~0 1) (= ~__unbuffered_p0_EAX~0 0) (= ~__unbuffered_p0_EBX~0 0) (= ~x~0 1) (<= 1 ~__unbuffered_cnt~0) (= ~y~0 1)), P0Thread1of1ForFork1InUse, Black: 561#(and (= ~__unbuffered_p0_EAX~0 0) (= ~__unbuffered_p0_EBX~0 0) (= ~x~0 1) (<= 1 ~__unbuffered_cnt~0) (= ~y~0 1)), 74#true, P2Thread1of1ForFork2InUse, P1Thread1of1ForFork0InUse, Black: 571#(and (= ~__unbuffered_p2_EAX~0 1) (= ~__unbuffered_p0_EAX~0 0) (= ~__unbuffered_p0_EBX~0 0) (= ~x~0 1) (<= 1 ~__unbuffered_cnt~0) (= ~y~0 1)), Black: 59#(and (= ~__unbuffered_cnt~0 0) (= ~x~0 0) (= ~__unbuffered_p0_EAX~0 0) (= ~y~0 0) (= ~__unbuffered_p0_EBX~0 0) (= ~__unbuffered_p2_EAX~0 0)), Black: 310#(and (= ~__unbuffered_p0_EBX~0 1) (= ~__unbuffered_p0_EAX~0 0) (= ~x~0 1) (<= 1 ~__unbuffered_cnt~0) (= ~y~0 1) (= ~__unbuffered_p2_EAX~0 0)), Black: 309#(and (= ~__unbuffered_p0_EBX~0 1) (= ~__unbuffered_p0_EAX~0 0) (= ~x~0 1) (<= 1 ~__unbuffered_cnt~0) (= ~__unbuffered_p2_EAX~0 0)), 453#true, 111#true, 42#L749true, Black: 66#(and (= ~x~0 0) (= ~__unbuffered_p0_EAX~0 0) (= ~y~0 0) (= ~__unbuffered_p0_EBX~0 0) (<= 1 ~__unbuffered_cnt~0) (= ~__unbuffered_p2_EAX~0 0)), Black: 579#(and (= ~__unbuffered_p0_EAX~0 0) (= ~__unbuffered_p0_EBX~0 0) (= ~x~0 1) (<= 1 ~__unbuffered_cnt~0) (= ~__unbuffered_p2_EAX~0 0) (= 2 ~y~0)), Black: 70#(and (= ~__unbuffered_cnt~0 0) (= ~__unbuffered_p0_EAX~0 0) (= ~y~0 0) (= ~__unbuffered_p0_EBX~0 0) (= ~__unbuffered_p2_EAX~0 0)), 274#true, Black: 71#(and (= ~__unbuffered_cnt~0 0) (= ~__unbuffered_p0_EAX~0 0) (= ~y~0 0) (= ~__unbuffered_p0_EBX~0 0) (= ~x~0 1) (= ~__unbuffered_p2_EAX~0 0)), Black: 326#(and (= ~__unbuffered_p0_EBX~0 1) (= ~__unbuffered_p0_EAX~0 0) (= ~x~0 1) (<= 1 ~__unbuffered_cnt~0) (= ~y~0 1) (= ~__unbuffered_p2_EAX~0 0)), Black: 77#(and (= ~__unbuffered_cnt~0 0) (= ~__unbuffered_p0_EAX~0 0) (= ~__unbuffered_p0_EBX~0 0) (= ~x~0 1) (= ~__unbuffered_p2_EAX~0 0)), Black: 78#(and (= ~__unbuffered_cnt~0 0) (= ~__unbuffered_p0_EAX~0 0) (= ~__unbuffered_p0_EBX~0 0) (= ~x~0 1) (= ~y~0 1) (= ~__unbuffered_p2_EAX~0 0)), Black: 76#(and (= ~__unbuffered_cnt~0 0) (= ~__unbuffered_p0_EAX~0 0) (= ~__unbuffered_p0_EBX~0 0) (= ~__unbuffered_p2_EAX~0 0)), Black: 589#(and (= ~__unbuffered_p0_EAX~0 0) (= ~__unbuffered_p0_EBX~0 0) (= ~x~0 1) (<= 1 ~__unbuffered_cnt~0) (= ~__unbuffered_p2_EAX~0 0) (= 2 ~y~0)), Black: 339#(and (= ~__unbuffered_p0_EBX~0 1) (= ~__unbuffered_p0_EAX~0 0) (= ~x~0 1) (<= 1 ~__unbuffered_cnt~0) (= ~y~0 1) (= ~__unbuffered_p2_EAX~0 0)), 98#true, Black: 87#(and (= ~__unbuffered_cnt~0 0) (= ~__unbuffered_p0_EAX~0 0) (= ~y~0 0) (= ~__unbuffered_p0_EBX~0 0) (= ~x~0 1) (= ~__unbuffered_p2_EAX~0 0)), Black: 601#(and (= ~__unbuffered_p0_EAX~0 0) (= ~__unbuffered_p0_EBX~0 0) (= ~x~0 1) (<= 1 ~__unbuffered_cnt~0) (= ~__unbuffered_p2_EAX~0 0) (= 2 ~y~0)), Black: 96#(and (= ~__unbuffered_cnt~0 0) (= ~__unbuffered_p0_EBX~0 1) (= ~__unbuffered_p0_EAX~0 0) (= ~y~0 0) (= ~x~0 1) (= ~__unbuffered_p2_EAX~0 0)), Black: 352#(and (= ~__unbuffered_p0_EBX~0 1) (= ~__unbuffered_p0_EAX~0 1) (= ~x~0 1) (<= 1 ~__unbuffered_cnt~0) (= ~y~0 1) (= ~__unbuffered_p2_EAX~0 0)), Black: 610#(and (= ~__unbuffered_p0_EAX~0 0) (= ~__unbuffered_p0_EBX~0 0) (<= 1 ~__unbuffered_cnt~0) (= ~__unbuffered_p2_EAX~0 0) (= 2 ~y~0)), Black: 611#(and (= ~__unbuffered_p0_EAX~0 0) (= ~__unbuffered_p0_EBX~0 0) (= ~x~0 1) (<= 1 ~__unbuffered_cnt~0) (= ~__unbuffered_p2_EAX~0 0) (= 2 ~y~0)), Black: 361#(and (= ~__unbuffered_p0_EBX~0 1) (= ~__unbuffered_p0_EAX~0 1) (= ~x~0 1) (<= 1 ~__unbuffered_cnt~0) (= ~y~0 1) (= ~__unbuffered_p2_EAX~0 0)), Black: 101#(and (= ~__unbuffered_cnt~0 0) (= ~__unbuffered_p0_EAX~0 0) (= ~__unbuffered_p0_EBX~0 0) (= ~__unbuffered_p2_EAX~0 0)), Black: 102#(and (= ~__unbuffered_cnt~0 0) (= ~__unbuffered_p0_EAX~0 0) (= ~__unbuffered_p0_EBX~0 0) (= ~x~0 1) (= ~__unbuffered_p2_EAX~0 0)), Black: 103#(and (= ~__unbuffered_cnt~0 0) (= ~__unbuffered_p0_EAX~0 0) (= ~__unbuffered_p0_EBX~0 0) (= ~x~0 1) (= ~y~0 1) (= ~__unbuffered_p2_EAX~0 0)), Black: 370#(and (= ~__unbuffered_p0_EBX~0 1) (= ~__unbuffered_p0_EAX~0 1) (= ~x~0 1) (<= 1 ~__unbuffered_cnt~0) (= ~y~0 1) (= ~__unbuffered_p2_EAX~0 0)), 381#true, Black: 113#(and (= ~__unbuffered_cnt~0 0) (= ~__unbuffered_p0_EBX~0 0) (= ~__unbuffered_p2_EAX~0 0)), Black: 115#(and (= ~__unbuffered_cnt~0 0) (= ~__unbuffered_p0_EBX~0 0) (= ~x~0 1) (= ~y~0 1) (= ~__unbuffered_p2_EAX~0 0)), Black: 116#(and (= ~__unbuffered_cnt~0 0) (= ~__unbuffered_p0_EAX~0 1) (= ~__unbuffered_p0_EBX~0 0) (= ~x~0 1) (= ~y~0 1) (= ~__unbuffered_p2_EAX~0 0)), Black: 114#(and (= ~__unbuffered_cnt~0 0) (= ~__unbuffered_p0_EBX~0 0) (= ~x~0 1) (= ~__unbuffered_p2_EAX~0 0)), Black: 377#(and (= ~__unbuffered_cnt~0 0) (= ~x~0 0) (= ~__unbuffered_p0_EAX~0 2) (= ~__unbuffered_p0_EBX~0 0) (= ~__unbuffered_p2_EAX~0 0) (= 2 ~y~0)), Black: 126#(and (= ~__unbuffered_p0_EAX~0 0) (= ~__unbuffered_p0_EBX~0 0) (= ~x~0 1) (<= 1 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395#(and (= ~__unbuffered_cnt~0 0) (= ~__unbuffered_p0_EAX~0 0) (= ~__unbuffered_p0_EBX~0 0) (= ~x~0 1) (= ~__unbuffered_p2_EAX~0 0)), Black: 396#(and (= ~__unbuffered_cnt~0 0) (= ~__unbuffered_p0_EAX~0 0) (= ~__unbuffered_p0_EBX~0 0) (= ~x~0 1) (= ~__unbuffered_p2_EAX~0 0) (= 2 ~y~0)), Black: 406#(and (= ~__unbuffered_cnt~0 0) (= ~__unbuffered_p0_EAX~0 0) (= ~__unbuffered_p0_EBX~0 0) (= ~x~0 1) (= ~__unbuffered_p2_EAX~0 0) (= 2 ~y~0)), Black: 147#(and (= ~__unbuffered_cnt~0 0) (= ~__unbuffered_p0_EBX~0 1) (= ~__unbuffered_p0_EAX~0 0) (= ~x~0 1) (= ~__unbuffered_p2_EAX~0 0)), Black: 148#(and (= ~__unbuffered_cnt~0 0) (= ~__unbuffered_p0_EBX~0 1) (= ~__unbuffered_p0_EAX~0 0) (= ~x~0 1) (= ~y~0 1) (= ~__unbuffered_p2_EAX~0 0)), 142#true, Black: 415#(and (= ~__unbuffered_cnt~0 0) (= ~__unbuffered_p0_EAX~0 0) (= ~__unbuffered_p0_EBX~0 0) (= ~x~0 1) (= ~__unbuffered_p2_EAX~0 0) (= 2 ~y~0)), 16#L18-2true, Black: 161#(and (= ~__unbuffered_cnt~0 0) (= ~__unbuffered_p0_EAX~0 0) (= ~x~0 1) (= ~__unbuffered_p2_EAX~0 0)), Black: 163#(and (= ~__unbuffered_cnt~0 0) (= ~__unbuffered_p0_EBX~0 1) (= ~__unbuffered_p0_EAX~0 0) (= ~x~0 1) (= ~y~0 1) (= ~__unbuffered_p2_EAX~0 0)), Black: 426#(and (= ~x~0 0) (= ~__unbuffered_p0_EAX~0 0) (= ~__unbuffered_p0_EBX~0 0) (<= 1 ~__unbuffered_cnt~0) (= ~__unbuffered_p2_EAX~0 0) (= 2 ~y~0)), Black: 172#(and (= ~__unbuffered_cnt~0 0) (= ~__unbuffered_p2_EAX~0 0)), Black: 173#(and (= ~__unbuffered_cnt~0 0) (= ~x~0 1) (= ~__unbuffered_p2_EAX~0 0)), Black: 176#(and (= ~__unbuffered_cnt~0 0) (= ~__unbuffered_p0_EBX~0 1) (= ~__unbuffered_p0_EAX~0 1) (= ~x~0 1) (= ~y~0 1) (= ~__unbuffered_p2_EAX~0 0)), Black: 174#(and (= ~__unbuffered_cnt~0 0) (= ~x~0 1) (= ~y~0 1) (= ~__unbuffered_p2_EAX~0 0)), 332#true, Black: 436#(and (= ~__unbuffered_cnt~0 0) (= ~__unbuffered_p2_EAX~0 1) (= ~__unbuffered_p0_EAX~0 0) (= ~__unbuffered_p0_EBX~0 0) (= ~x~0 1) (= 2 ~y~0)), 616#true, Black: 185#(and (= ~__unbuffered_cnt~0 0) (= ~x~0 0) (= ~__unbuffered_p0_EAX~0 0) (= ~__unbuffered_p0_EBX~0 0) (= ~__unbuffered_p2_EAX~0 0) (= 2 ~y~0)), Black: 444#(and (= ~__unbuffered_cnt~0 0) (= ~__unbuffered_p0_EAX~0 0) (= ~__unbuffered_p0_EBX~0 0) (= ~x~0 1)), Black: 446#(and (= ~__unbuffered_cnt~0 0) (= ~__unbuffered_p2_EAX~0 1) (= ~__unbuffered_p0_EAX~0 0) (= ~__unbuffered_p0_EBX~0 0) (= ~x~0 1) (= ~y~0 1)), Black: 195#(and (= ~__unbuffered_p0_EAX~0 0) (= ~y~0 0) (= ~__unbuffered_p0_EBX~0 0) (= ~x~0 1) (<= 1 ~__unbuffered_cnt~0) (= ~__unbuffered_p2_EAX~0 0)), Black: 455#(and (= ~__unbuffered_cnt~0 0) (= ~__unbuffered_p0_EBX~0 0)), Black: 456#(and (= ~__unbuffered_cnt~0 0) (= ~__unbuffered_p0_EBX~0 0) (= ~x~0 1)), Black: 459#(and (= ~__unbuffered_cnt~0 0) (= ~__unbuffered_p0_EAX~0 1) (= ~__unbuffered_p2_EAX~0 1) (= ~__unbuffered_p0_EBX~0 0) (= ~x~0 1) (= ~y~0 1)), Black: 205#(and (= ~__unbuffered_p0_EAX~0 0) (= ~y~0 0) (= ~__unbuffered_p0_EBX~0 0) (= ~x~0 1) (<= 1 ~__unbuffered_cnt~0) (= ~__unbuffered_p2_EAX~0 0)), Black: 469#(and (= ~__unbuffered_cnt~0 0) (= ~__unbuffered_p0_EAX~0 1) (= ~__unbuffered_p2_EAX~0 1) (= ~__unbuffered_p0_EBX~0 0) (= ~x~0 1) (= ~y~0 1)), Black: 215#(and (= ~__unbuffered_p0_EBX~0 1) (= ~__unbuffered_p0_EAX~0 0) (= ~y~0 0) (= ~x~0 1) (<= 1 ~__unbuffered_cnt~0) (= ~__unbuffered_p2_EAX~0 0)), 128#true, 605#true, Black: 477#(and (= ~__unbuffered_cnt~0 0) (= ~__unbuffered_p0_EAX~0 2) (= ~__unbuffered_p0_EBX~0 0) (= ~x~0 1) (= ~__unbuffered_p2_EAX~0 0) (= 2 ~y~0)), Black: 475#(and (= ~__unbuffered_cnt~0 0) (= ~__unbuffered_p0_EBX~0 0) (= ~x~0 1) (= ~__unbuffered_p2_EAX~0 0)), Black: 223#(and (= ~__unbuffered_p0_EAX~0 0) (= ~__unbuffered_p0_EBX~0 0) (= ~x~0 1) (<= 1 ~__unbuffered_cnt~0) (= ~y~0 1) (= ~__unbuffered_p2_EAX~0 0)), 3#L729true, Black: 235#(and (= ~__unbuffered_p0_EAX~0 1) (= ~__unbuffered_p0_EBX~0 0) (= ~x~0 1) (<= 1 ~__unbuffered_cnt~0) (= ~y~0 1) (= ~__unbuffered_p2_EAX~0 0)), 440#true, 34#L764true, 556#true, Black: 243#(and (= ~__unbuffered_p0_EAX~0 1) (= ~__unbuffered_p0_EBX~0 0) (= ~x~0 1) (<= 1 ~__unbuffered_cnt~0) (= ~y~0 1) (= ~__unbuffered_p2_EAX~0 0)), Black: 242#(and (= ~__unbuffered_p0_EBX~0 0) (= ~x~0 1) (<= 1 ~__unbuffered_cnt~0) (= ~y~0 1) (= ~__unbuffered_p2_EAX~0 0)), Black: 498#(and (= ~__unbuffered_cnt~0 0) (= ~__unbuffered_p0_EAX~0 2) (= ~__unbuffered_p0_EBX~0 0) (= ~x~0 1) (= ~__unbuffered_p2_EAX~0 0) (= 2 ~y~0)), 471#true, Black: 508#(and (= ~__unbuffered_cnt~0 0) (= ~__unbuffered_p0_EAX~0 2) (= ~__unbuffered_p0_EBX~0 0) (= ~x~0 1) (= ~__unbuffered_p2_EAX~0 0) (= 2 ~y~0))]) [2024-06-28 00:54:30,540 INFO L294 olderBase$Statistics]: this new event has 30 ancestors and is cut-off event [2024-06-28 00:54:30,540 INFO L297 olderBase$Statistics]: existing Event has 30 ancestors and is cut-off event [2024-06-28 00:54:30,541 INFO L297 olderBase$Statistics]: existing Event has 30 ancestors and is cut-off event [2024-06-28 00:54:30,541 INFO L297 olderBase$Statistics]: existing Event has 30 ancestors and is cut-off event [2024-06-28 00:54:30,814 INFO L124 PetriNetUnfolderBase]: 9282/17021 cut-off events. [2024-06-28 00:54:30,814 INFO L125 PetriNetUnfolderBase]: For 342411/345012 co-relation queries the response was YES. [2024-06-28 00:54:30,975 INFO L83 FinitePrefix]: Finished finitePrefix Result has 89849 conditions, 17021 events. 9282/17021 cut-off events. For 342411/345012 co-relation queries the response was YES. Maximal size of possible extension queue 1237. Compared 157416 event pairs, 2306 based on Foata normal form. 1302/17217 useless extension candidates. Maximal degree in co-relation 89733. Up to 5775 conditions per place. [2024-06-28 00:54:31,040 INFO L140 encePairwiseOnDemand]: 36/45 looper letters, 220 selfloop transitions, 249 changer transitions 229/830 dead transitions. [2024-06-28 00:54:31,041 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 244 places, 830 transitions, 13931 flow [2024-06-28 00:54:31,041 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 00:54:31,041 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 00:54:31,041 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 223 transitions. [2024-06-28 00:54:31,041 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.707936507936508 [2024-06-28 00:54:31,042 INFO L175 Difference]: Start difference. First operand has 238 places, 343 transitions, 5352 flow. Second operand 7 states and 223 transitions. [2024-06-28 00:54:31,042 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 244 places, 830 transitions, 13931 flow [2024-06-28 00:54:33,152 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 240 places, 830 transitions, 13401 flow, removed 46 selfloop flow, removed 4 redundant places. [2024-06-28 00:54:33,160 INFO L231 Difference]: Finished difference. Result has 246 places, 489 transitions, 8465 flow [2024-06-28 00:54:33,160 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=45, PETRI_DIFFERENCE_MINUEND_FLOW=5162, PETRI_DIFFERENCE_MINUEND_PLACES=234, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=343, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=103, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=215, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=8465, PETRI_PLACES=246, PETRI_TRANSITIONS=489} [2024-06-28 00:54:33,161 INFO L281 CegarLoopForPetriNet]: 49 programPoint places, 197 predicate places. [2024-06-28 00:54:33,161 INFO L495 AbstractCegarLoop]: Abstraction has has 246 places, 489 transitions, 8465 flow [2024-06-28 00:54:33,161 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 23.6) internal successors, (118), 5 states have internal predecessors, (118), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:54:33,161 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:54:33,161 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:54:33,161 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable54 [2024-06-28 00:54:33,161 INFO L420 AbstractCegarLoop]: === Iteration 56 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 00:54:33,161 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:54:33,161 INFO L85 PathProgramCache]: Analyzing trace with hash 1601858292, now seen corresponding path program 1 times [2024-06-28 00:54:33,161 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:54:33,161 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [37669512] [2024-06-28 00:54:33,161 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:54:33,162 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:54:33,167 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:54:33,282 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:54:33,282 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:54:33,282 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [37669512] [2024-06-28 00:54:33,282 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [37669512] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:54:33,282 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:54:33,282 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 00:54:33,282 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1940846030] [2024-06-28 00:54:33,283 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:54:33,283 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 00:54:33,283 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:54:33,283 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 00:54:33,283 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2024-06-28 00:54:33,368 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 17 out of 45 [2024-06-28 00:54:33,369 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 246 places, 489 transitions, 8465 flow. Second operand has 8 states, 8 states have (on average 18.875) internal successors, (151), 8 states have internal predecessors, (151), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:54:33,369 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:54:33,369 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 17 of 45 [2024-06-28 00:54:33,369 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:54:36,640 INFO L124 PetriNetUnfolderBase]: 10562/18348 cut-off events. [2024-06-28 00:54:36,640 INFO L125 PetriNetUnfolderBase]: For 511954/512626 co-relation queries the response was YES. [2024-06-28 00:54:36,809 INFO L83 FinitePrefix]: Finished finitePrefix Result has 112430 conditions, 18348 events. 10562/18348 cut-off events. For 511954/512626 co-relation queries the response was YES. Maximal size of possible extension queue 1209. Compared 158289 event pairs, 4727 based on Foata normal form. 327/18410 useless extension candidates. Maximal degree in co-relation 112308. Up to 15977 conditions per place. [2024-06-28 00:54:36,884 INFO L140 encePairwiseOnDemand]: 39/45 looper letters, 392 selfloop transitions, 22 changer transitions 93/521 dead transitions. [2024-06-28 00:54:36,884 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 251 places, 521 transitions, 9600 flow [2024-06-28 00:54:36,884 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-28 00:54:36,884 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-28 00:54:36,885 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 165 transitions. [2024-06-28 00:54:36,885 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6111111111111112 [2024-06-28 00:54:36,885 INFO L175 Difference]: Start difference. First operand has 246 places, 489 transitions, 8465 flow. Second operand 6 states and 165 transitions. [2024-06-28 00:54:36,885 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 251 places, 521 transitions, 9600 flow [2024-06-28 00:54:40,488 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 250 places, 521 transitions, 9548 flow, removed 23 selfloop flow, removed 1 redundant places. [2024-06-28 00:54:40,495 INFO L231 Difference]: Finished difference. Result has 251 places, 402 transitions, 6906 flow [2024-06-28 00:54:40,496 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=45, PETRI_DIFFERENCE_MINUEND_FLOW=8413, PETRI_DIFFERENCE_MINUEND_PLACES=245, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=489, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=21, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=468, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=6906, PETRI_PLACES=251, PETRI_TRANSITIONS=402} [2024-06-28 00:54:40,496 INFO L281 CegarLoopForPetriNet]: 49 programPoint places, 202 predicate places. [2024-06-28 00:54:40,496 INFO L495 AbstractCegarLoop]: Abstraction has has 251 places, 402 transitions, 6906 flow [2024-06-28 00:54:40,496 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 18.875) internal successors, (151), 8 states have internal predecessors, (151), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:54:40,496 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:54:40,496 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:54:40,496 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable55 [2024-06-28 00:54:40,497 INFO L420 AbstractCegarLoop]: === Iteration 57 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 00:54:40,497 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:54:40,497 INFO L85 PathProgramCache]: Analyzing trace with hash -1742623000, now seen corresponding path program 2 times [2024-06-28 00:54:40,497 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:54:40,497 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [707794701] [2024-06-28 00:54:40,497 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:54:40,497 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:54:40,501 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:54:40,733 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:54:40,733 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:54:40,733 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [707794701] [2024-06-28 00:54:40,733 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [707794701] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:54:40,733 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:54:40,734 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 00:54:40,734 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2006415850] [2024-06-28 00:54:40,734 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:54:40,734 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 00:54:40,736 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:54:40,736 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 00:54:40,737 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2024-06-28 00:54:40,777 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 17 out of 45 [2024-06-28 00:54:40,778 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 251 places, 402 transitions, 6906 flow. Second operand has 8 states, 8 states have (on average 18.875) internal successors, (151), 8 states have internal predecessors, (151), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:54:40,778 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:54:40,778 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 17 of 45 [2024-06-28 00:54:40,778 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:54:43,815 INFO L124 PetriNetUnfolderBase]: 9151/16323 cut-off events. [2024-06-28 00:54:43,815 INFO L125 PetriNetUnfolderBase]: For 495178/495820 co-relation queries the response was YES. [2024-06-28 00:54:43,928 INFO L83 FinitePrefix]: Finished finitePrefix Result has 100407 conditions, 16323 events. 9151/16323 cut-off events. For 495178/495820 co-relation queries the response was YES. Maximal size of possible extension queue 1033. Compared 141088 event pairs, 3883 based on Foata normal form. 331/16503 useless extension candidates. Maximal degree in co-relation 100283. Up to 13599 conditions per place. [2024-06-28 00:54:43,992 INFO L140 encePairwiseOnDemand]: 37/45 looper letters, 384 selfloop transitions, 32 changer transitions 0/430 dead transitions. [2024-06-28 00:54:43,992 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 254 places, 430 transitions, 7844 flow [2024-06-28 00:54:43,993 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-28 00:54:43,993 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-28 00:54:43,993 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 172 transitions. [2024-06-28 00:54:43,993 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6370370370370371 [2024-06-28 00:54:43,993 INFO L175 Difference]: Start difference. First operand has 251 places, 402 transitions, 6906 flow. Second operand 6 states and 172 transitions. [2024-06-28 00:54:43,993 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 254 places, 430 transitions, 7844 flow [2024-06-28 00:54:46,497 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 250 places, 430 transitions, 7743 flow, removed 25 selfloop flow, removed 4 redundant places. [2024-06-28 00:54:46,502 INFO L231 Difference]: Finished difference. Result has 251 places, 402 transitions, 6874 flow [2024-06-28 00:54:46,502 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=45, PETRI_DIFFERENCE_MINUEND_FLOW=6805, PETRI_DIFFERENCE_MINUEND_PLACES=245, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=402, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=32, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=370, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=6874, PETRI_PLACES=251, PETRI_TRANSITIONS=402} [2024-06-28 00:54:46,503 INFO L281 CegarLoopForPetriNet]: 49 programPoint places, 202 predicate places. [2024-06-28 00:54:46,503 INFO L495 AbstractCegarLoop]: Abstraction has has 251 places, 402 transitions, 6874 flow [2024-06-28 00:54:46,503 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 18.875) internal successors, (151), 8 states have internal predecessors, (151), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:54:46,503 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:54:46,503 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:54:46,503 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable56 [2024-06-28 00:54:46,503 INFO L420 AbstractCegarLoop]: === Iteration 58 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 00:54:46,503 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:54:46,503 INFO L85 PathProgramCache]: Analyzing trace with hash 868140980, now seen corresponding path program 1 times [2024-06-28 00:54:46,504 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:54:46,504 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1771397081] [2024-06-28 00:54:46,504 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:54:46,504 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:54:46,509 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:54:46,611 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:54:46,611 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:54:46,611 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1771397081] [2024-06-28 00:54:46,612 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1771397081] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:54:46,612 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:54:46,612 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 00:54:46,612 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [818869544] [2024-06-28 00:54:46,612 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:54:46,612 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 00:54:46,613 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:54:46,613 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 00:54:46,613 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2024-06-28 00:54:46,643 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 17 out of 45 [2024-06-28 00:54:46,644 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 251 places, 402 transitions, 6874 flow. Second operand has 8 states, 8 states have (on average 18.875) internal successors, (151), 8 states have internal predecessors, (151), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:54:46,644 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:54:46,644 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 17 of 45 [2024-06-28 00:54:46,644 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:54:49,701 INFO L124 PetriNetUnfolderBase]: 9390/15928 cut-off events. [2024-06-28 00:54:49,701 INFO L125 PetriNetUnfolderBase]: For 508047/508764 co-relation queries the response was YES. [2024-06-28 00:54:49,830 INFO L83 FinitePrefix]: Finished finitePrefix Result has 102478 conditions, 15928 events. 9390/15928 cut-off events. For 508047/508764 co-relation queries the response was YES. Maximal size of possible extension queue 1044. Compared 132131 event pairs, 2968 based on Foata normal form. 466/16137 useless extension candidates. Maximal degree in co-relation 102354. Up to 13935 conditions per place. [2024-06-28 00:54:49,904 INFO L140 encePairwiseOnDemand]: 34/45 looper letters, 307 selfloop transitions, 136 changer transitions 0/457 dead transitions. [2024-06-28 00:54:49,904 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 257 places, 457 transitions, 8607 flow [2024-06-28 00:54:49,904 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 00:54:49,904 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 00:54:49,904 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 204 transitions. [2024-06-28 00:54:49,905 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6476190476190476 [2024-06-28 00:54:49,905 INFO L175 Difference]: Start difference. First operand has 251 places, 402 transitions, 6874 flow. Second operand 7 states and 204 transitions. [2024-06-28 00:54:49,905 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 257 places, 457 transitions, 8607 flow [2024-06-28 00:54:52,838 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 253 places, 457 transitions, 8538 flow, removed 4 selfloop flow, removed 4 redundant places. [2024-06-28 00:54:52,844 INFO L231 Difference]: Finished difference. Result has 256 places, 425 transitions, 7775 flow [2024-06-28 00:54:52,851 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=45, PETRI_DIFFERENCE_MINUEND_FLOW=6805, PETRI_DIFFERENCE_MINUEND_PLACES=247, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=402, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=115, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=268, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=7775, PETRI_PLACES=256, PETRI_TRANSITIONS=425} [2024-06-28 00:54:52,851 INFO L281 CegarLoopForPetriNet]: 49 programPoint places, 207 predicate places. [2024-06-28 00:54:52,851 INFO L495 AbstractCegarLoop]: Abstraction has has 256 places, 425 transitions, 7775 flow [2024-06-28 00:54:52,851 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 18.875) internal successors, (151), 8 states have internal predecessors, (151), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:54:52,851 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:54:52,851 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:54:52,851 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable57 [2024-06-28 00:54:52,851 INFO L420 AbstractCegarLoop]: === Iteration 59 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 00:54:52,852 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:54:52,852 INFO L85 PathProgramCache]: Analyzing trace with hash 1433684590, now seen corresponding path program 2 times [2024-06-28 00:54:52,852 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:54:52,853 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1927982513] [2024-06-28 00:54:52,853 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:54:52,853 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:54:52,857 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:54:52,958 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:54:52,958 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:54:52,958 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1927982513] [2024-06-28 00:54:52,958 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1927982513] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:54:52,958 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:54:52,959 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 00:54:52,959 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [986156509] [2024-06-28 00:54:52,959 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:54:52,959 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 00:54:52,959 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:54:52,959 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 00:54:52,960 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2024-06-28 00:54:53,007 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 17 out of 45 [2024-06-28 00:54:53,008 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 256 places, 425 transitions, 7775 flow. Second operand has 8 states, 8 states have (on average 18.875) internal successors, (151), 8 states have internal predecessors, (151), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:54:53,008 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:54:53,008 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 17 of 45 [2024-06-28 00:54:53,008 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:54:56,066 INFO L124 PetriNetUnfolderBase]: 9418/16016 cut-off events. [2024-06-28 00:54:56,067 INFO L125 PetriNetUnfolderBase]: For 536046/536743 co-relation queries the response was YES. [2024-06-28 00:54:56,214 INFO L83 FinitePrefix]: Finished finitePrefix Result has 107001 conditions, 16016 events. 9418/16016 cut-off events. For 536046/536743 co-relation queries the response was YES. Maximal size of possible extension queue 1042. Compared 133227 event pairs, 3056 based on Foata normal form. 423/16168 useless extension candidates. Maximal degree in co-relation 106874. Up to 14192 conditions per place. [2024-06-28 00:54:56,416 INFO L140 encePairwiseOnDemand]: 34/45 looper letters, 342 selfloop transitions, 95 changer transitions 0/451 dead transitions. [2024-06-28 00:54:56,416 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 262 places, 451 transitions, 8841 flow [2024-06-28 00:54:56,416 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 00:54:56,416 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 00:54:56,417 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 198 transitions. [2024-06-28 00:54:56,419 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6285714285714286 [2024-06-28 00:54:56,419 INFO L175 Difference]: Start difference. First operand has 256 places, 425 transitions, 7775 flow. Second operand 7 states and 198 transitions. [2024-06-28 00:54:56,419 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 262 places, 451 transitions, 8841 flow [2024-06-28 00:54:59,205 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 259 places, 451 transitions, 8642 flow, removed 39 selfloop flow, removed 3 redundant places. [2024-06-28 00:54:59,211 INFO L231 Difference]: Finished difference. Result has 260 places, 426 transitions, 7810 flow [2024-06-28 00:54:59,212 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=45, PETRI_DIFFERENCE_MINUEND_FLOW=7576, PETRI_DIFFERENCE_MINUEND_PLACES=253, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=425, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=94, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=331, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=7810, PETRI_PLACES=260, PETRI_TRANSITIONS=426} [2024-06-28 00:54:59,212 INFO L281 CegarLoopForPetriNet]: 49 programPoint places, 211 predicate places. [2024-06-28 00:54:59,212 INFO L495 AbstractCegarLoop]: Abstraction has has 260 places, 426 transitions, 7810 flow [2024-06-28 00:54:59,212 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 18.875) internal successors, (151), 8 states have internal predecessors, (151), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:54:59,212 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:54:59,212 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:54:59,213 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable58 [2024-06-28 00:54:59,213 INFO L420 AbstractCegarLoop]: === Iteration 60 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 00:54:59,213 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:54:59,213 INFO L85 PathProgramCache]: Analyzing trace with hash 868261136, now seen corresponding path program 1 times [2024-06-28 00:54:59,213 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:54:59,213 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2011887700] [2024-06-28 00:54:59,213 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:54:59,213 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:54:59,217 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:54:59,313 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:54:59,313 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:54:59,313 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2011887700] [2024-06-28 00:54:59,313 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2011887700] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:54:59,313 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:54:59,313 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 00:54:59,313 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1234277401] [2024-06-28 00:54:59,314 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:54:59,314 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 00:54:59,314 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:54:59,314 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 00:54:59,314 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2024-06-28 00:54:59,340 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 17 out of 45 [2024-06-28 00:54:59,341 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 260 places, 426 transitions, 7810 flow. Second operand has 8 states, 8 states have (on average 18.875) internal successors, (151), 8 states have internal predecessors, (151), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:54:59,341 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:54:59,341 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 17 of 45 [2024-06-28 00:54:59,341 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:55:02,344 INFO L124 PetriNetUnfolderBase]: 9410/16030 cut-off events. [2024-06-28 00:55:02,344 INFO L125 PetriNetUnfolderBase]: For 547165/547843 co-relation queries the response was YES. [2024-06-28 00:55:02,456 INFO L83 FinitePrefix]: Finished finitePrefix Result has 107390 conditions, 16030 events. 9410/16030 cut-off events. For 547165/547843 co-relation queries the response was YES. Maximal size of possible extension queue 1043. Compared 133580 event pairs, 3087 based on Foata normal form. 418/16177 useless extension candidates. Maximal degree in co-relation 107261. Up to 14184 conditions per place. [2024-06-28 00:55:02,518 INFO L140 encePairwiseOnDemand]: 34/45 looper letters, 341 selfloop transitions, 95 changer transitions 0/450 dead transitions. [2024-06-28 00:55:02,518 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 266 places, 450 transitions, 8756 flow [2024-06-28 00:55:02,519 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 00:55:02,519 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 00:55:02,519 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 197 transitions. [2024-06-28 00:55:02,519 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6253968253968254 [2024-06-28 00:55:02,519 INFO L175 Difference]: Start difference. First operand has 260 places, 426 transitions, 7810 flow. Second operand 7 states and 197 transitions. [2024-06-28 00:55:02,519 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 266 places, 450 transitions, 8756 flow [2024-06-28 00:55:05,483 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 262 places, 450 transitions, 8549 flow, removed 16 selfloop flow, removed 4 redundant places. [2024-06-28 00:55:05,489 INFO L231 Difference]: Finished difference. Result has 263 places, 426 transitions, 7822 flow [2024-06-28 00:55:05,489 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=45, PETRI_DIFFERENCE_MINUEND_FLOW=7603, PETRI_DIFFERENCE_MINUEND_PLACES=256, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=426, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=95, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=331, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=7822, PETRI_PLACES=263, PETRI_TRANSITIONS=426} [2024-06-28 00:55:05,490 INFO L281 CegarLoopForPetriNet]: 49 programPoint places, 214 predicate places. [2024-06-28 00:55:05,490 INFO L495 AbstractCegarLoop]: Abstraction has has 263 places, 426 transitions, 7822 flow [2024-06-28 00:55:05,490 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 18.875) internal successors, (151), 8 states have internal predecessors, (151), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:55:05,490 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:55:05,490 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:55:05,490 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable59 [2024-06-28 00:55:05,490 INFO L420 AbstractCegarLoop]: === Iteration 61 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 00:55:05,491 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:55:05,491 INFO L85 PathProgramCache]: Analyzing trace with hash 876422796, now seen corresponding path program 2 times [2024-06-28 00:55:05,491 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:55:05,491 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1422226151] [2024-06-28 00:55:05,491 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:55:05,491 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:55:05,496 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:55:05,608 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:55:05,608 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:55:05,608 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1422226151] [2024-06-28 00:55:05,608 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1422226151] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:55:05,608 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:55:05,608 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 00:55:05,609 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1691726388] [2024-06-28 00:55:05,609 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:55:05,609 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 00:55:05,609 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:55:05,609 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 00:55:05,609 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2024-06-28 00:55:05,655 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 17 out of 45 [2024-06-28 00:55:05,655 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 263 places, 426 transitions, 7822 flow. Second operand has 8 states, 8 states have (on average 18.875) internal successors, (151), 8 states have internal predecessors, (151), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:55:05,655 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:55:05,655 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 17 of 45 [2024-06-28 00:55:05,655 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:55:08,683 INFO L124 PetriNetUnfolderBase]: 9446/16151 cut-off events. [2024-06-28 00:55:08,683 INFO L125 PetriNetUnfolderBase]: For 562816/563519 co-relation queries the response was YES. [2024-06-28 00:55:08,806 INFO L83 FinitePrefix]: Finished finitePrefix Result has 108251 conditions, 16151 events. 9446/16151 cut-off events. For 562816/563519 co-relation queries the response was YES. Maximal size of possible extension queue 1056. Compared 135188 event pairs, 3059 based on Foata normal form. 473/16369 useless extension candidates. Maximal degree in co-relation 108122. Up to 13934 conditions per place. [2024-06-28 00:55:09,056 INFO L140 encePairwiseOnDemand]: 34/45 looper letters, 296 selfloop transitions, 156 changer transitions 0/466 dead transitions. [2024-06-28 00:55:09,057 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 269 places, 466 transitions, 9137 flow [2024-06-28 00:55:09,058 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 00:55:09,058 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 00:55:09,058 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 203 transitions. [2024-06-28 00:55:09,058 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6444444444444445 [2024-06-28 00:55:09,058 INFO L175 Difference]: Start difference. First operand has 263 places, 426 transitions, 7822 flow. Second operand 7 states and 203 transitions. [2024-06-28 00:55:09,058 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 269 places, 466 transitions, 9137 flow [2024-06-28 00:55:11,990 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 263 places, 466 transitions, 8947 flow, removed 0 selfloop flow, removed 6 redundant places. [2024-06-28 00:55:11,997 INFO L231 Difference]: Finished difference. Result has 266 places, 438 transitions, 8351 flow [2024-06-28 00:55:11,997 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=45, PETRI_DIFFERENCE_MINUEND_FLOW=7632, PETRI_DIFFERENCE_MINUEND_PLACES=257, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=426, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=147, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=273, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=8351, PETRI_PLACES=266, PETRI_TRANSITIONS=438} [2024-06-28 00:55:11,997 INFO L281 CegarLoopForPetriNet]: 49 programPoint places, 217 predicate places. [2024-06-28 00:55:11,998 INFO L495 AbstractCegarLoop]: Abstraction has has 266 places, 438 transitions, 8351 flow [2024-06-28 00:55:11,998 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 18.875) internal successors, (151), 8 states have internal predecessors, (151), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:55:11,998 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:55:11,998 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:55:11,998 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable60 [2024-06-28 00:55:11,998 INFO L420 AbstractCegarLoop]: === Iteration 62 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 00:55:11,998 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:55:11,998 INFO L85 PathProgramCache]: Analyzing trace with hash 876185646, now seen corresponding path program 3 times [2024-06-28 00:55:11,999 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:55:11,999 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [889213866] [2024-06-28 00:55:11,999 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:55:11,999 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:55:12,003 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:55:12,100 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:55:12,100 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:55:12,100 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [889213866] [2024-06-28 00:55:12,100 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [889213866] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:55:12,100 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:55:12,100 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 00:55:12,101 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1271006200] [2024-06-28 00:55:12,101 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:55:12,101 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 00:55:12,101 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:55:12,101 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 00:55:12,101 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2024-06-28 00:55:12,138 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 17 out of 45 [2024-06-28 00:55:12,138 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 266 places, 438 transitions, 8351 flow. Second operand has 8 states, 8 states have (on average 18.875) internal successors, (151), 8 states have internal predecessors, (151), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:55:12,138 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:55:12,138 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 17 of 45 [2024-06-28 00:55:12,138 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:55:15,428 INFO L124 PetriNetUnfolderBase]: 9353/16539 cut-off events. [2024-06-28 00:55:15,428 INFO L125 PetriNetUnfolderBase]: For 583602/584293 co-relation queries the response was YES. [2024-06-28 00:55:15,548 INFO L83 FinitePrefix]: Finished finitePrefix Result has 109394 conditions, 16539 events. 9353/16539 cut-off events. For 583602/584293 co-relation queries the response was YES. Maximal size of possible extension queue 1065. Compared 142985 event pairs, 3414 based on Foata normal form. 466/16835 useless extension candidates. Maximal degree in co-relation 109262. Up to 13756 conditions per place. [2024-06-28 00:55:15,612 INFO L140 encePairwiseOnDemand]: 34/45 looper letters, 300 selfloop transitions, 151 changer transitions 0/465 dead transitions. [2024-06-28 00:55:15,612 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 272 places, 465 transitions, 9335 flow [2024-06-28 00:55:15,613 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 00:55:15,613 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 00:55:15,613 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 202 transitions. [2024-06-28 00:55:15,613 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6412698412698413 [2024-06-28 00:55:15,613 INFO L175 Difference]: Start difference. First operand has 266 places, 438 transitions, 8351 flow. Second operand 7 states and 202 transitions. [2024-06-28 00:55:15,613 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 272 places, 465 transitions, 9335 flow [2024-06-28 00:55:18,330 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 269 places, 465 transitions, 9238 flow, removed 14 selfloop flow, removed 3 redundant places. [2024-06-28 00:55:18,337 INFO L231 Difference]: Finished difference. Result has 270 places, 438 transitions, 8613 flow [2024-06-28 00:55:18,338 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=45, PETRI_DIFFERENCE_MINUEND_FLOW=8254, PETRI_DIFFERENCE_MINUEND_PLACES=263, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=438, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=151, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=287, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=8613, PETRI_PLACES=270, PETRI_TRANSITIONS=438} [2024-06-28 00:55:18,338 INFO L281 CegarLoopForPetriNet]: 49 programPoint places, 221 predicate places. [2024-06-28 00:55:18,338 INFO L495 AbstractCegarLoop]: Abstraction has has 270 places, 438 transitions, 8613 flow [2024-06-28 00:55:18,338 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 18.875) internal successors, (151), 8 states have internal predecessors, (151), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:55:18,338 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:55:18,338 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:55:18,338 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable61 [2024-06-28 00:55:18,338 INFO L420 AbstractCegarLoop]: === Iteration 63 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 00:55:18,339 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:55:18,339 INFO L85 PathProgramCache]: Analyzing trace with hash 328858984, now seen corresponding path program 3 times [2024-06-28 00:55:18,339 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:55:18,339 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1276333417] [2024-06-28 00:55:18,339 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:55:18,339 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:55:18,343 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:55:18,422 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:55:18,422 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:55:18,422 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1276333417] [2024-06-28 00:55:18,422 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1276333417] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:55:18,422 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:55:18,422 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 00:55:18,423 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1187213767] [2024-06-28 00:55:18,423 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:55:18,423 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 00:55:18,423 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:55:18,423 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 00:55:18,423 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2024-06-28 00:55:18,459 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 17 out of 45 [2024-06-28 00:55:18,459 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 270 places, 438 transitions, 8613 flow. Second operand has 8 states, 8 states have (on average 18.875) internal successors, (151), 8 states have internal predecessors, (151), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:55:18,459 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:55:18,459 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 17 of 45 [2024-06-28 00:55:18,459 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:55:21,862 INFO L124 PetriNetUnfolderBase]: 9398/16709 cut-off events. [2024-06-28 00:55:21,862 INFO L125 PetriNetUnfolderBase]: For 594258/594962 co-relation queries the response was YES. [2024-06-28 00:55:21,998 INFO L83 FinitePrefix]: Finished finitePrefix Result has 111584 conditions, 16709 events. 9398/16709 cut-off events. For 594258/594962 co-relation queries the response was YES. Maximal size of possible extension queue 1065. Compared 144941 event pairs, 3339 based on Foata normal form. 475/17016 useless extension candidates. Maximal degree in co-relation 111451. Up to 13396 conditions per place. [2024-06-28 00:55:22,069 INFO L140 encePairwiseOnDemand]: 34/45 looper letters, 297 selfloop transitions, 182 changer transitions 0/493 dead transitions. [2024-06-28 00:55:22,070 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 279 places, 493 transitions, 10151 flow [2024-06-28 00:55:22,070 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 00:55:22,070 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 00:55:22,070 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 285 transitions. [2024-06-28 00:55:22,070 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6333333333333333 [2024-06-28 00:55:22,070 INFO L175 Difference]: Start difference. First operand has 270 places, 438 transitions, 8613 flow. Second operand 10 states and 285 transitions. [2024-06-28 00:55:22,071 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 279 places, 493 transitions, 10151 flow [2024-06-28 00:55:25,430 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 272 places, 493 transitions, 9768 flow, removed 6 selfloop flow, removed 7 redundant places. [2024-06-28 00:55:25,437 INFO L231 Difference]: Finished difference. Result has 274 places, 444 transitions, 8775 flow [2024-06-28 00:55:25,437 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=45, PETRI_DIFFERENCE_MINUEND_FLOW=8238, PETRI_DIFFERENCE_MINUEND_PLACES=263, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=438, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=178, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=258, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=8775, PETRI_PLACES=274, PETRI_TRANSITIONS=444} [2024-06-28 00:55:25,438 INFO L281 CegarLoopForPetriNet]: 49 programPoint places, 225 predicate places. [2024-06-28 00:55:25,438 INFO L495 AbstractCegarLoop]: Abstraction has has 274 places, 444 transitions, 8775 flow [2024-06-28 00:55:25,438 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 18.875) internal successors, (151), 8 states have internal predecessors, (151), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:55:25,438 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:55:25,438 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:55:25,438 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable62 [2024-06-28 00:55:25,438 INFO L420 AbstractCegarLoop]: === Iteration 64 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 00:55:25,439 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:55:25,439 INFO L85 PathProgramCache]: Analyzing trace with hash 328979140, now seen corresponding path program 4 times [2024-06-28 00:55:25,439 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:55:25,439 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [185312883] [2024-06-28 00:55:25,439 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:55:25,439 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:55:25,443 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:55:25,538 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:55:25,538 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:55:25,539 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [185312883] [2024-06-28 00:55:25,539 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [185312883] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:55:25,539 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:55:25,539 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 00:55:25,539 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1765984518] [2024-06-28 00:55:25,539 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:55:25,539 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 00:55:25,539 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:55:25,540 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 00:55:25,540 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2024-06-28 00:55:25,586 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 17 out of 45 [2024-06-28 00:55:25,586 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 274 places, 444 transitions, 8775 flow. Second operand has 8 states, 8 states have (on average 18.875) internal successors, (151), 8 states have internal predecessors, (151), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:55:25,586 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:55:25,586 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 17 of 45 [2024-06-28 00:55:25,586 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:55:29,070 INFO L124 PetriNetUnfolderBase]: 9502/16774 cut-off events. [2024-06-28 00:55:29,070 INFO L125 PetriNetUnfolderBase]: For 602259/602954 co-relation queries the response was YES. [2024-06-28 00:55:29,183 INFO L83 FinitePrefix]: Finished finitePrefix Result has 115024 conditions, 16774 events. 9502/16774 cut-off events. For 602259/602954 co-relation queries the response was YES. Maximal size of possible extension queue 1071. Compared 144704 event pairs, 3467 based on Foata normal form. 393/16975 useless extension candidates. Maximal degree in co-relation 114891. Up to 14295 conditions per place. [2024-06-28 00:55:29,246 INFO L140 encePairwiseOnDemand]: 35/45 looper letters, 397 selfloop transitions, 72 changer transitions 0/483 dead transitions. [2024-06-28 00:55:29,247 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 281 places, 483 transitions, 9942 flow [2024-06-28 00:55:29,247 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 00:55:29,247 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 00:55:29,247 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 218 transitions. [2024-06-28 00:55:29,248 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6055555555555555 [2024-06-28 00:55:29,248 INFO L175 Difference]: Start difference. First operand has 274 places, 444 transitions, 8775 flow. Second operand 8 states and 218 transitions. [2024-06-28 00:55:29,248 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 281 places, 483 transitions, 9942 flow [2024-06-28 00:55:32,269 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 275 places, 483 transitions, 9653 flow, removed 44 selfloop flow, removed 6 redundant places. [2024-06-28 00:55:32,276 INFO L231 Difference]: Finished difference. Result has 277 places, 453 transitions, 8797 flow [2024-06-28 00:55:32,276 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=45, PETRI_DIFFERENCE_MINUEND_FLOW=8492, PETRI_DIFFERENCE_MINUEND_PLACES=268, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=444, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=63, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=373, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=8797, PETRI_PLACES=277, PETRI_TRANSITIONS=453} [2024-06-28 00:55:32,277 INFO L281 CegarLoopForPetriNet]: 49 programPoint places, 228 predicate places. [2024-06-28 00:55:32,277 INFO L495 AbstractCegarLoop]: Abstraction has has 277 places, 453 transitions, 8797 flow [2024-06-28 00:55:32,277 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 18.875) internal successors, (151), 8 states have internal predecessors, (151), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:55:32,277 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:55:32,277 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:55:32,277 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable63 [2024-06-28 00:55:32,278 INFO L420 AbstractCegarLoop]: === Iteration 65 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 00:55:32,278 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:55:32,278 INFO L85 PathProgramCache]: Analyzing trace with hash 682485020, now seen corresponding path program 4 times [2024-06-28 00:55:32,278 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:55:32,278 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [424509506] [2024-06-28 00:55:32,278 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:55:32,278 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:55:32,282 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:55:32,377 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:55:32,377 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:55:32,377 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [424509506] [2024-06-28 00:55:32,377 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [424509506] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:55:32,377 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:55:32,377 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 00:55:32,378 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1189406337] [2024-06-28 00:55:32,378 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:55:32,378 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 00:55:32,378 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:55:32,378 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 00:55:32,378 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2024-06-28 00:55:32,414 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 17 out of 45 [2024-06-28 00:55:32,414 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 277 places, 453 transitions, 8797 flow. Second operand has 8 states, 8 states have (on average 18.875) internal successors, (151), 8 states have internal predecessors, (151), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:55:32,414 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:55:32,414 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 17 of 45 [2024-06-28 00:55:32,414 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:55:35,953 INFO L124 PetriNetUnfolderBase]: 9442/16790 cut-off events. [2024-06-28 00:55:35,953 INFO L125 PetriNetUnfolderBase]: For 595786/596462 co-relation queries the response was YES. [2024-06-28 00:55:36,092 INFO L83 FinitePrefix]: Finished finitePrefix Result has 112584 conditions, 16790 events. 9442/16790 cut-off events. For 595786/596462 co-relation queries the response was YES. Maximal size of possible extension queue 1063. Compared 145737 event pairs, 3367 based on Foata normal form. 453/17079 useless extension candidates. Maximal degree in co-relation 112449. Up to 13438 conditions per place. [2024-06-28 00:55:36,163 INFO L140 encePairwiseOnDemand]: 34/45 looper letters, 268 selfloop transitions, 215 changer transitions 0/497 dead transitions. [2024-06-28 00:55:36,163 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 285 places, 497 transitions, 10255 flow [2024-06-28 00:55:36,163 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 00:55:36,164 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 00:55:36,164 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 254 transitions. [2024-06-28 00:55:36,164 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6271604938271605 [2024-06-28 00:55:36,164 INFO L175 Difference]: Start difference. First operand has 277 places, 453 transitions, 8797 flow. Second operand 9 states and 254 transitions. [2024-06-28 00:55:36,164 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 285 places, 497 transitions, 10255 flow [2024-06-28 00:55:39,455 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 281 places, 497 transitions, 10093 flow, removed 17 selfloop flow, removed 4 redundant places. [2024-06-28 00:55:39,462 INFO L231 Difference]: Finished difference. Result has 283 places, 459 transitions, 9255 flow [2024-06-28 00:55:39,462 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=45, PETRI_DIFFERENCE_MINUEND_FLOW=8635, PETRI_DIFFERENCE_MINUEND_PLACES=273, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=453, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=209, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=242, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=9255, PETRI_PLACES=283, PETRI_TRANSITIONS=459} [2024-06-28 00:55:39,462 INFO L281 CegarLoopForPetriNet]: 49 programPoint places, 234 predicate places. [2024-06-28 00:55:39,462 INFO L495 AbstractCegarLoop]: Abstraction has has 283 places, 459 transitions, 9255 flow [2024-06-28 00:55:39,463 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 18.875) internal successors, (151), 8 states have internal predecessors, (151), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:55:39,463 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:55:39,463 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:55:39,463 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable64 [2024-06-28 00:55:39,463 INFO L420 AbstractCegarLoop]: === Iteration 66 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 00:55:39,463 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:55:39,463 INFO L85 PathProgramCache]: Analyzing trace with hash 334520266, now seen corresponding path program 1 times [2024-06-28 00:55:39,463 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:55:39,463 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [576983460] [2024-06-28 00:55:39,463 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:55:39,463 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:55:39,467 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:55:39,549 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:55:39,549 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:55:39,549 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [576983460] [2024-06-28 00:55:39,549 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [576983460] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:55:39,549 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:55:39,549 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 00:55:39,549 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [554087590] [2024-06-28 00:55:39,550 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:55:39,550 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 00:55:39,550 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:55:39,550 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 00:55:39,550 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=35, Unknown=0, NotChecked=0, Total=56 [2024-06-28 00:55:39,578 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 17 out of 45 [2024-06-28 00:55:39,579 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 283 places, 459 transitions, 9255 flow. Second operand has 8 states, 8 states have (on average 18.875) internal successors, (151), 8 states have internal predecessors, (151), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:55:39,579 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:55:39,579 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 17 of 45 [2024-06-28 00:55:39,579 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:55:42,773 INFO L124 PetriNetUnfolderBase]: 9629/16463 cut-off events. [2024-06-28 00:55:42,773 INFO L125 PetriNetUnfolderBase]: For 615050/615821 co-relation queries the response was YES. [2024-06-28 00:55:42,907 INFO L83 FinitePrefix]: Finished finitePrefix Result has 114718 conditions, 16463 events. 9629/16463 cut-off events. For 615050/615821 co-relation queries the response was YES. Maximal size of possible extension queue 1069. Compared 138248 event pairs, 3082 based on Foata normal form. 483/16688 useless extension candidates. Maximal degree in co-relation 114581. Up to 14378 conditions per place. [2024-06-28 00:55:43,210 INFO L140 encePairwiseOnDemand]: 35/45 looper letters, 343 selfloop transitions, 135 changer transitions 0/492 dead transitions. [2024-06-28 00:55:43,210 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 291 places, 492 transitions, 10313 flow [2024-06-28 00:55:43,210 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 00:55:43,210 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 00:55:43,211 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 244 transitions. [2024-06-28 00:55:43,211 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6024691358024692 [2024-06-28 00:55:43,211 INFO L175 Difference]: Start difference. First operand has 283 places, 459 transitions, 9255 flow. Second operand 9 states and 244 transitions. [2024-06-28 00:55:43,211 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 291 places, 492 transitions, 10313 flow