./Ultimate.py --spec ../../../trunk/examples/svcomp/properties/unreach-call.prp --file ../../../trunk/examples/svcomp/pthread-wmm/safe027_pso.oepc_pso.opt_tso.oepc_tso.opt.i --full-output --witness-type correctness_witness --witnessparser.only.consider.loop.invariants false --validate ./goblint.2024-06-19_11-23-25.files/mutex-meet-nonrel/safe027_pso.oepc_pso.opt_tso.oepc_tso.opt.yml/witness.yml --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 7724a2de Calling Ultimate with: /root/.sdkman/candidates/java/current/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReachWitnessValidation.xml -i ../../../trunk/examples/svcomp/pthread-wmm/safe027_pso.oepc_pso.opt_tso.oepc_tso.opt.i ./goblint.2024-06-19_11-23-25.files/mutex-meet-nonrel/safe027_pso.oepc_pso.opt_tso.oepc_tso.opt.yml/witness.yml -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --traceabstraction.compute.hoare.annotation.of.negated.interpolant.automaton,.abstraction.and.cfg false --witnessparser.only.consider.loop.invariants false --- Real Ultimate output --- This is Ultimate 0.2.4-tmp.fs.goblint-validation-7724a2d-m [2024-06-28 01:00:43,738 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-06-28 01:00:43,810 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-06-28 01:00:43,813 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-06-28 01:00:43,814 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-06-28 01:00:43,837 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-06-28 01:00:43,837 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-06-28 01:00:43,838 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-06-28 01:00:43,838 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-06-28 01:00:43,841 INFO L153 SettingsManager]: * Use memory slicer=true [2024-06-28 01:00:43,841 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-06-28 01:00:43,842 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-06-28 01:00:43,842 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-06-28 01:00:43,843 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-06-28 01:00:43,843 INFO L153 SettingsManager]: * Use SBE=true [2024-06-28 01:00:43,843 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-06-28 01:00:43,844 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-06-28 01:00:43,844 INFO L153 SettingsManager]: * sizeof long=4 [2024-06-28 01:00:43,844 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-06-28 01:00:43,844 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-06-28 01:00:43,845 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-06-28 01:00:43,845 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-06-28 01:00:43,845 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-06-28 01:00:43,845 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-06-28 01:00:43,846 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-06-28 01:00:43,846 INFO L153 SettingsManager]: * sizeof long double=12 [2024-06-28 01:00:43,846 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-06-28 01:00:43,846 INFO L153 SettingsManager]: * Use constant arrays=true [2024-06-28 01:00:43,847 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-06-28 01:00:43,847 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-06-28 01:00:43,848 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-06-28 01:00:43,848 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-06-28 01:00:43,848 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-06-28 01:00:43,848 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-06-28 01:00:43,848 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-06-28 01:00:43,849 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-06-28 01:00:43,849 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-06-28 01:00:43,849 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-06-28 01:00:43,849 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-06-28 01:00:43,849 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-06-28 01:00:43,850 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2024-06-28 01:00:43,850 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-06-28 01:00:43,850 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-06-28 01:00:43,850 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessparser: Only consider loop invariants -> false [2024-06-28 01:00:44,049 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-06-28 01:00:44,074 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-06-28 01:00:44,076 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-06-28 01:00:44,076 INFO L270 PluginConnector]: Initializing Witness Parser... [2024-06-28 01:00:44,077 INFO L274 PluginConnector]: Witness Parser initialized [2024-06-28 01:00:44,077 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/./goblint.2024-06-19_11-23-25.files/mutex-meet-nonrel/safe027_pso.oepc_pso.opt_tso.oepc_tso.opt.yml/witness.yml [2024-06-28 01:00:44,163 INFO L270 PluginConnector]: Initializing CDTParser... [2024-06-28 01:00:44,164 INFO L274 PluginConnector]: CDTParser initialized [2024-06-28 01:00:44,165 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-wmm/safe027_pso.oepc_pso.opt_tso.oepc_tso.opt.i [2024-06-28 01:00:45,149 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-06-28 01:00:45,353 INFO L384 CDTParser]: Found 1 translation units. [2024-06-28 01:00:45,364 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/safe027_pso.oepc_pso.opt_tso.oepc_tso.opt.i [2024-06-28 01:00:45,378 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/fb5a9bbd3/156f9dbba8c449c4b2fb298e5b04928c/FLAG8f3f8bc11 [2024-06-28 01:00:45,392 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/fb5a9bbd3/156f9dbba8c449c4b2fb298e5b04928c [2024-06-28 01:00:45,393 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-06-28 01:00:45,394 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2024-06-28 01:00:45,396 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-06-28 01:00:45,396 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-06-28 01:00:45,399 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-06-28 01:00:45,400 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 28.06 01:00:44" (1/2) ... [2024-06-28 01:00:45,401 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@47c81cb3 and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 28.06 01:00:45, skipping insertion in model container [2024-06-28 01:00:45,401 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 28.06 01:00:44" (1/2) ... [2024-06-28 01:00:45,403 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@71562442 and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 28.06 01:00:45, skipping insertion in model container [2024-06-28 01:00:45,403 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.06 01:00:45" (2/2) ... [2024-06-28 01:00:45,404 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@47c81cb3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.06 01:00:45, skipping insertion in model container [2024-06-28 01:00:45,404 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.06 01:00:45" (2/2) ... [2024-06-28 01:00:45,404 INFO L83 nessWitnessExtractor]: Extracting all invariants from correctness witness [2024-06-28 01:00:45,454 INFO L95 edCorrectnessWitness]: Found the following entries in the witness: [2024-06-28 01:00:45,455 INFO L97 edCorrectnessWitness]: Location invariant before [L797-L797] (((((((! multithreaded || (__unbuffered_p2_EBX == 0 || __unbuffered_p2_EBX == 1)) && (! multithreaded || (x == 0 || x == 1))) && (! multithreaded || (__unbuffered_p0_EBX == 0 || __unbuffered_p0_EBX == 1))) && (! multithreaded || (__unbuffered_p0_EAX == 0 || __unbuffered_p0_EAX == 1))) && (! multithreaded || (y == 0 || y == 1))) && (! multithreaded || 0 <= __unbuffered_cnt)) && (! multithreaded || (__unbuffered_p2_EAX == 0 || __unbuffered_p2_EAX == 1))) && (! multithreaded || ((((((0 <= __unbuffered_cnt && (__unbuffered_p0_EAX == 0 || __unbuffered_p0_EAX == 1)) && (__unbuffered_p0_EBX == 0 || __unbuffered_p0_EBX == 1)) && (__unbuffered_p2_EAX == 0 || __unbuffered_p2_EAX == 1)) && (__unbuffered_p2_EBX == 0 || __unbuffered_p2_EBX == 1)) && (x == 0 || x == 1)) && (y == 0 || y == 1))) [2024-06-28 01:00:45,455 INFO L97 edCorrectnessWitness]: Location invariant before [L793-L793] (((((((! multithreaded || (__unbuffered_p2_EBX == 0 || __unbuffered_p2_EBX == 1)) && (! multithreaded || (x == 0 || x == 1))) && (! multithreaded || (__unbuffered_p0_EBX == 0 || __unbuffered_p0_EBX == 1))) && (! multithreaded || (__unbuffered_p0_EAX == 0 || __unbuffered_p0_EAX == 1))) && (! multithreaded || (y == 0 || y == 1))) && (! multithreaded || 0 <= __unbuffered_cnt)) && (! multithreaded || (__unbuffered_p2_EAX == 0 || __unbuffered_p2_EAX == 1))) && (! multithreaded || ((((((0 <= __unbuffered_cnt && (__unbuffered_p0_EAX == 0 || __unbuffered_p0_EAX == 1)) && (__unbuffered_p0_EBX == 0 || __unbuffered_p0_EBX == 1)) && (__unbuffered_p2_EAX == 0 || __unbuffered_p2_EAX == 1)) && (__unbuffered_p2_EBX == 0 || __unbuffered_p2_EBX == 1)) && (x == 0 || x == 1)) && (y == 0 || y == 1))) [2024-06-28 01:00:45,456 INFO L97 edCorrectnessWitness]: Location invariant before [L795-L795] (((((((! multithreaded || (__unbuffered_p2_EBX == 0 || __unbuffered_p2_EBX == 1)) && (! multithreaded || (x == 0 || x == 1))) && (! multithreaded || (__unbuffered_p0_EBX == 0 || __unbuffered_p0_EBX == 1))) && (! multithreaded || (__unbuffered_p0_EAX == 0 || __unbuffered_p0_EAX == 1))) && (! multithreaded || (y == 0 || y == 1))) && (! multithreaded || 0 <= __unbuffered_cnt)) && (! multithreaded || (__unbuffered_p2_EAX == 0 || __unbuffered_p2_EAX == 1))) && (! multithreaded || ((((((0 <= __unbuffered_cnt && (__unbuffered_p0_EAX == 0 || __unbuffered_p0_EAX == 1)) && (__unbuffered_p0_EBX == 0 || __unbuffered_p0_EBX == 1)) && (__unbuffered_p2_EAX == 0 || __unbuffered_p2_EAX == 1)) && (__unbuffered_p2_EBX == 0 || __unbuffered_p2_EBX == 1)) && (x == 0 || x == 1)) && (y == 0 || y == 1))) [2024-06-28 01:00:45,456 INFO L97 edCorrectnessWitness]: Location invariant before [L798-L798] (((((((! multithreaded || (__unbuffered_p2_EBX == 0 || __unbuffered_p2_EBX == 1)) && (! multithreaded || (x == 0 || x == 1))) && (! multithreaded || (__unbuffered_p0_EBX == 0 || __unbuffered_p0_EBX == 1))) && (! multithreaded || (__unbuffered_p0_EAX == 0 || __unbuffered_p0_EAX == 1))) && (! multithreaded || (y == 0 || y == 1))) && (! multithreaded || 0 <= __unbuffered_cnt)) && (! multithreaded || (__unbuffered_p2_EAX == 0 || __unbuffered_p2_EAX == 1))) && (! multithreaded || ((((((0 <= __unbuffered_cnt && (__unbuffered_p0_EAX == 0 || __unbuffered_p0_EAX == 1)) && (__unbuffered_p0_EBX == 0 || __unbuffered_p0_EBX == 1)) && (__unbuffered_p2_EAX == 0 || __unbuffered_p2_EAX == 1)) && (__unbuffered_p2_EBX == 0 || __unbuffered_p2_EBX == 1)) && (x == 0 || x == 1)) && (y == 0 || y == 1))) [2024-06-28 01:00:45,456 INFO L103 edCorrectnessWitness]: ghost_variable multithreaded = 0 [2024-06-28 01:00:45,457 INFO L106 edCorrectnessWitness]: ghost_update [L791-L791] multithreaded = 1; [2024-06-28 01:00:45,494 INFO L177 MainTranslator]: Built tables and reachable declarations [2024-06-28 01:00:45,632 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/safe027_pso.oepc_pso.opt_tso.oepc_tso.opt.i[975,988] [2024-06-28 01:00:45,753 INFO L207 PostProcessor]: Analyzing one entry point: main [2024-06-28 01:00:45,763 INFO L202 MainTranslator]: Completed pre-run Start Parsing Local [2024-06-28 01:00:45,796 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/safe027_pso.oepc_pso.opt_tso.oepc_tso.opt.i[975,988] Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local [2024-06-28 01:00:45,843 INFO L207 PostProcessor]: Analyzing one entry point: main [2024-06-28 01:00:45,871 INFO L206 MainTranslator]: Completed translation [2024-06-28 01:00:45,872 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.06 01:00:45 WrapperNode [2024-06-28 01:00:45,872 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-06-28 01:00:45,873 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-06-28 01:00:45,873 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-06-28 01:00:45,873 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-06-28 01:00:45,878 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.06 01:00:45" (1/1) ... [2024-06-28 01:00:45,899 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.06 01:00:45" (1/1) ... [2024-06-28 01:00:45,929 INFO L138 Inliner]: procedures = 176, calls = 46, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 73 [2024-06-28 01:00:45,930 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-06-28 01:00:45,931 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-06-28 01:00:45,931 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-06-28 01:00:45,931 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-06-28 01:00:45,939 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.06 01:00:45" (1/1) ... [2024-06-28 01:00:45,939 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.06 01:00:45" (1/1) ... [2024-06-28 01:00:45,949 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.06 01:00:45" (1/1) ... [2024-06-28 01:00:45,965 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 01:00:45,965 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.06 01:00:45" (1/1) ... [2024-06-28 01:00:45,965 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.06 01:00:45" (1/1) ... [2024-06-28 01:00:45,971 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.06 01:00:45" (1/1) ... [2024-06-28 01:00:45,978 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.06 01:00:45" (1/1) ... [2024-06-28 01:00:45,979 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.06 01:00:45" (1/1) ... [2024-06-28 01:00:45,979 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.06 01:00:45" (1/1) ... [2024-06-28 01:00:45,981 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-06-28 01:00:45,982 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-06-28 01:00:45,982 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-06-28 01:00:45,982 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-06-28 01:00:45,983 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.06 01:00:45" (1/1) ... [2024-06-28 01:00:45,990 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-06-28 01:00:45,996 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-06-28 01:00:46,013 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 01:00:46,014 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 01:00:46,043 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2024-06-28 01:00:46,043 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-06-28 01:00:46,043 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2024-06-28 01:00:46,043 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2024-06-28 01:00:46,044 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2024-06-28 01:00:46,044 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2024-06-28 01:00:46,044 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2024-06-28 01:00:46,044 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2024-06-28 01:00:46,044 INFO L130 BoogieDeclarations]: Found specification of procedure P3 [2024-06-28 01:00:46,044 INFO L138 BoogieDeclarations]: Found implementation of procedure P3 [2024-06-28 01:00:46,044 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-06-28 01:00:46,044 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2024-06-28 01:00:46,044 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-06-28 01:00:46,044 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-06-28 01:00:46,045 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 01:00:46,185 INFO L244 CfgBuilder]: Building ICFG [2024-06-28 01:00:46,187 INFO L270 CfgBuilder]: Building CFG for each procedure with an implementation [2024-06-28 01:00:46,399 INFO L289 CfgBuilder]: Ommited future-live optimization because the input is a concurrent program. [2024-06-28 01:00:46,399 INFO L293 CfgBuilder]: Performing block encoding [2024-06-28 01:00:46,485 INFO L315 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-06-28 01:00:46,485 INFO L320 CfgBuilder]: Removed 0 assume(true) statements. [2024-06-28 01:00:46,486 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.06 01:00:46 BoogieIcfgContainer [2024-06-28 01:00:46,486 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-06-28 01:00:46,487 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-06-28 01:00:46,487 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-06-28 01:00:46,490 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-06-28 01:00:46,490 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 28.06 01:00:44" (1/4) ... [2024-06-28 01:00:46,490 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@9a09a02 and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CORRECTNESS_WITNESS 28.06 01:00:46, skipping insertion in model container [2024-06-28 01:00:46,490 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.06 01:00:45" (2/4) ... [2024-06-28 01:00:46,491 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@9a09a02 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.06 01:00:46, skipping insertion in model container [2024-06-28 01:00:46,491 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.06 01:00:45" (3/4) ... [2024-06-28 01:00:46,491 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@9a09a02 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.06 01:00:46, skipping insertion in model container [2024-06-28 01:00:46,491 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.06 01:00:46" (4/4) ... [2024-06-28 01:00:46,492 INFO L112 eAbstractionObserver]: Analyzing ICFG safe027_pso.oepc_pso.opt_tso.oepc_tso.opt.i [2024-06-28 01:00:46,507 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-06-28 01:00:46,507 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 5 error locations. [2024-06-28 01:00:46,507 INFO L522 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-06-28 01:00:46,537 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2024-06-28 01:00:46,559 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 66 places, 54 transitions, 124 flow [2024-06-28 01:00:46,592 INFO L124 PetriNetUnfolderBase]: 1/50 cut-off events. [2024-06-28 01:00:46,592 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-06-28 01:00:46,595 INFO L83 FinitePrefix]: Finished finitePrefix Result has 63 conditions, 50 events. 1/50 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 85 event pairs, 0 based on Foata normal form. 0/44 useless extension candidates. Maximal degree in co-relation 53. Up to 2 conditions per place. [2024-06-28 01:00:46,595 INFO L82 GeneralOperation]: Start removeDead. Operand has 66 places, 54 transitions, 124 flow [2024-06-28 01:00:46,599 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 60 places, 47 transitions, 106 flow [2024-06-28 01:00:46,611 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-06-28 01:00:46,616 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;@5d187dd8, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-06-28 01:00:46,617 INFO L358 AbstractCegarLoop]: Starting to check reachability of 9 error locations. [2024-06-28 01:00:46,619 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-06-28 01:00:46,620 INFO L124 PetriNetUnfolderBase]: 0/5 cut-off events. [2024-06-28 01:00:46,620 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-06-28 01:00:46,620 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:00:46,620 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2024-06-28 01:00:46,620 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 01:00:46,625 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:00:46,626 INFO L85 PathProgramCache]: Analyzing trace with hash 220131546, now seen corresponding path program 1 times [2024-06-28 01:00:46,633 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:00:46,633 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [434115731] [2024-06-28 01:00:46,633 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:00:46,634 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:00:46,723 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:00:46,984 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 01:00:46,985 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:00:46,986 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [434115731] [2024-06-28 01:00:46,986 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [434115731] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:00:46,986 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:00:46,986 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-06-28 01:00:46,988 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [42354316] [2024-06-28 01:00:46,988 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:00:46,994 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-06-28 01:00:46,997 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:00:47,015 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-06-28 01:00:47,016 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-06-28 01:00:47,056 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 24 out of 54 [2024-06-28 01:00:47,059 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 60 places, 47 transitions, 106 flow. Second operand has 3 states, 3 states have (on average 25.333333333333332) internal successors, (76), 3 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:00:47,059 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:00:47,059 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 24 of 54 [2024-06-28 01:00:47,060 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:00:47,393 INFO L124 PetriNetUnfolderBase]: 2263/3407 cut-off events. [2024-06-28 01:00:47,393 INFO L125 PetriNetUnfolderBase]: For 49/49 co-relation queries the response was YES. [2024-06-28 01:00:47,401 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6701 conditions, 3407 events. 2263/3407 cut-off events. For 49/49 co-relation queries the response was YES. Maximal size of possible extension queue 237. Compared 20246 event pairs, 1604 based on Foata normal form. 1/3334 useless extension candidates. Maximal degree in co-relation 6688. Up to 3171 conditions per place. [2024-06-28 01:00:47,416 INFO L140 encePairwiseOnDemand]: 45/54 looper letters, 39 selfloop transitions, 5 changer transitions 0/63 dead transitions. [2024-06-28 01:00:47,417 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 62 places, 63 transitions, 235 flow [2024-06-28 01:00:47,418 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-06-28 01:00:47,419 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-06-28 01:00:47,424 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 120 transitions. [2024-06-28 01:00:47,426 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.7407407407407407 [2024-06-28 01:00:47,427 INFO L175 Difference]: Start difference. First operand has 60 places, 47 transitions, 106 flow. Second operand 3 states and 120 transitions. [2024-06-28 01:00:47,428 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 62 places, 63 transitions, 235 flow [2024-06-28 01:00:47,429 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 58 places, 63 transitions, 228 flow, removed 0 selfloop flow, removed 4 redundant places. [2024-06-28 01:00:47,435 INFO L231 Difference]: Finished difference. Result has 59 places, 51 transitions, 141 flow [2024-06-28 01:00:47,436 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=54, PETRI_DIFFERENCE_MINUEND_FLOW=102, PETRI_DIFFERENCE_MINUEND_PLACES=56, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=47, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=42, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=141, PETRI_PLACES=59, PETRI_TRANSITIONS=51} [2024-06-28 01:00:47,438 INFO L281 CegarLoopForPetriNet]: 60 programPoint places, -1 predicate places. [2024-06-28 01:00:47,439 INFO L495 AbstractCegarLoop]: Abstraction has has 59 places, 51 transitions, 141 flow [2024-06-28 01:00:47,439 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 25.333333333333332) internal successors, (76), 3 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:00:47,440 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:00:47,440 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:00:47,440 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-06-28 01:00:47,440 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 01:00:47,441 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:00:47,441 INFO L85 PathProgramCache]: Analyzing trace with hash -375903302, now seen corresponding path program 1 times [2024-06-28 01:00:47,441 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:00:47,441 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [916578199] [2024-06-28 01:00:47,441 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:00:47,441 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:00:47,493 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:00:47,724 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:00:47,724 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:00:47,725 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [916578199] [2024-06-28 01:00:47,726 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [916578199] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:00:47,726 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:00:47,726 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-06-28 01:00:47,727 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [22179078] [2024-06-28 01:00:47,727 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:00:47,728 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-06-28 01:00:47,728 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:00:47,728 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-06-28 01:00:47,729 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2024-06-28 01:00:47,788 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 22 out of 54 [2024-06-28 01:00:47,789 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 59 places, 51 transitions, 141 flow. Second operand has 6 states, 6 states have (on average 23.166666666666668) internal successors, (139), 6 states have internal predecessors, (139), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:00:47,790 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:00:47,790 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 22 of 54 [2024-06-28 01:00:47,790 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:00:48,259 INFO L124 PetriNetUnfolderBase]: 3891/5899 cut-off events. [2024-06-28 01:00:48,260 INFO L125 PetriNetUnfolderBase]: For 1204/1412 co-relation queries the response was YES. [2024-06-28 01:00:48,270 INFO L83 FinitePrefix]: Finished finitePrefix Result has 13229 conditions, 5899 events. 3891/5899 cut-off events. For 1204/1412 co-relation queries the response was YES. Maximal size of possible extension queue 349. Compared 35903 event pairs, 1913 based on Foata normal form. 35/5807 useless extension candidates. Maximal degree in co-relation 13217. Up to 5093 conditions per place. [2024-06-28 01:00:48,294 INFO L140 encePairwiseOnDemand]: 45/54 looper letters, 57 selfloop transitions, 7 changer transitions 0/81 dead transitions. [2024-06-28 01:00:48,294 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 61 places, 81 transitions, 345 flow [2024-06-28 01:00:48,295 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-06-28 01:00:48,295 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-06-28 01:00:48,296 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 156 transitions. [2024-06-28 01:00:48,296 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.7222222222222222 [2024-06-28 01:00:48,296 INFO L175 Difference]: Start difference. First operand has 59 places, 51 transitions, 141 flow. Second operand 4 states and 156 transitions. [2024-06-28 01:00:48,297 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 61 places, 81 transitions, 345 flow [2024-06-28 01:00:48,298 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 60 places, 81 transitions, 340 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-06-28 01:00:48,298 INFO L231 Difference]: Finished difference. Result has 61 places, 52 transitions, 168 flow [2024-06-28 01:00:48,299 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=54, PETRI_DIFFERENCE_MINUEND_FLOW=132, PETRI_DIFFERENCE_MINUEND_PLACES=57, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=50, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=43, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=168, PETRI_PLACES=61, PETRI_TRANSITIONS=52} [2024-06-28 01:00:48,299 INFO L281 CegarLoopForPetriNet]: 60 programPoint places, 1 predicate places. [2024-06-28 01:00:48,299 INFO L495 AbstractCegarLoop]: Abstraction has has 61 places, 52 transitions, 168 flow [2024-06-28 01:00:48,300 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 23.166666666666668) internal successors, (139), 6 states have internal predecessors, (139), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:00:48,300 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:00:48,300 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:00:48,300 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-06-28 01:00:48,300 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 01:00:48,301 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:00:48,301 INFO L85 PathProgramCache]: Analyzing trace with hash -2070043834, now seen corresponding path program 1 times [2024-06-28 01:00:48,301 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:00:48,301 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [573206590] [2024-06-28 01:00:48,302 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:00:48,302 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:00:48,311 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:00:48,481 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 01:00:48,482 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:00:48,482 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [573206590] [2024-06-28 01:00:48,482 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [573206590] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:00:48,482 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:00:48,482 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-06-28 01:00:48,482 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1070618334] [2024-06-28 01:00:48,482 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:00:48,482 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-06-28 01:00:48,483 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:00:48,483 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-06-28 01:00:48,483 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-06-28 01:00:48,507 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 22 out of 54 [2024-06-28 01:00:48,508 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 61 places, 52 transitions, 168 flow. Second operand has 4 states, 4 states have (on average 24.0) internal successors, (96), 4 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:00:48,508 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:00:48,508 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 22 of 54 [2024-06-28 01:00:48,508 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:00:48,943 INFO L124 PetriNetUnfolderBase]: 4154/6426 cut-off events. [2024-06-28 01:00:48,943 INFO L125 PetriNetUnfolderBase]: For 2728/2776 co-relation queries the response was YES. [2024-06-28 01:00:48,951 INFO L83 FinitePrefix]: Finished finitePrefix Result has 15201 conditions, 6426 events. 4154/6426 cut-off events. For 2728/2776 co-relation queries the response was YES. Maximal size of possible extension queue 320. Compared 39600 event pairs, 2380 based on Foata normal form. 3/6359 useless extension candidates. Maximal degree in co-relation 15187. Up to 5696 conditions per place. [2024-06-28 01:00:48,975 INFO L140 encePairwiseOnDemand]: 45/54 looper letters, 55 selfloop transitions, 9 changer transitions 0/81 dead transitions. [2024-06-28 01:00:48,975 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 64 places, 81 transitions, 376 flow [2024-06-28 01:00:48,976 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-06-28 01:00:48,976 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-06-28 01:00:48,978 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 149 transitions. [2024-06-28 01:00:48,979 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6898148148148148 [2024-06-28 01:00:48,980 INFO L175 Difference]: Start difference. First operand has 61 places, 52 transitions, 168 flow. Second operand 4 states and 149 transitions. [2024-06-28 01:00:48,980 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 64 places, 81 transitions, 376 flow [2024-06-28 01:00:48,982 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 62 places, 81 transitions, 362 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-06-28 01:00:48,984 INFO L231 Difference]: Finished difference. Result has 64 places, 60 transitions, 228 flow [2024-06-28 01:00:48,984 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=54, PETRI_DIFFERENCE_MINUEND_FLOW=158, PETRI_DIFFERENCE_MINUEND_PLACES=59, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=52, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=45, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=228, PETRI_PLACES=64, PETRI_TRANSITIONS=60} [2024-06-28 01:00:48,984 INFO L281 CegarLoopForPetriNet]: 60 programPoint places, 4 predicate places. [2024-06-28 01:00:48,985 INFO L495 AbstractCegarLoop]: Abstraction has has 64 places, 60 transitions, 228 flow [2024-06-28 01:00:48,985 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 24.0) internal successors, (96), 4 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:00:48,985 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:00:48,985 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:00:48,985 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-06-28 01:00:48,985 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 01:00:48,986 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:00:48,986 INFO L85 PathProgramCache]: Analyzing trace with hash -742208091, now seen corresponding path program 1 times [2024-06-28 01:00:48,986 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:00:48,986 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [895965018] [2024-06-28 01:00:48,986 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:00:48,987 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:00:48,993 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:00:49,154 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:00:49,155 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:00:49,155 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [895965018] [2024-06-28 01:00:49,155 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [895965018] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:00:49,156 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:00:49,156 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-06-28 01:00:49,156 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [37628974] [2024-06-28 01:00:49,156 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:00:49,156 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-06-28 01:00:49,157 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:00:49,158 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-06-28 01:00:49,158 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-06-28 01:00:49,186 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 22 out of 54 [2024-06-28 01:00:49,187 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 64 places, 60 transitions, 228 flow. Second operand has 5 states, 5 states have (on average 23.8) internal successors, (119), 5 states have internal predecessors, (119), 0 states have call successors, (0), 0 states 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 01:00:49,187 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:00:49,187 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 22 of 54 [2024-06-28 01:00:49,187 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:00:49,640 INFO L124 PetriNetUnfolderBase]: 4139/6257 cut-off events. [2024-06-28 01:00:49,640 INFO L125 PetriNetUnfolderBase]: For 4617/4669 co-relation queries the response was YES. [2024-06-28 01:00:49,649 INFO L83 FinitePrefix]: Finished finitePrefix Result has 16604 conditions, 6257 events. 4139/6257 cut-off events. For 4617/4669 co-relation queries the response was YES. Maximal size of possible extension queue 316. Compared 37996 event pairs, 1846 based on Foata normal form. 6/6206 useless extension candidates. Maximal degree in co-relation 16588. Up to 5637 conditions per place. [2024-06-28 01:00:49,672 INFO L140 encePairwiseOnDemand]: 45/54 looper letters, 65 selfloop transitions, 12 changer transitions 0/94 dead transitions. [2024-06-28 01:00:49,672 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 68 places, 94 transitions, 474 flow [2024-06-28 01:00:49,673 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-06-28 01:00:49,673 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-06-28 01:00:49,674 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 184 transitions. [2024-06-28 01:00:49,674 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6814814814814815 [2024-06-28 01:00:49,674 INFO L175 Difference]: Start difference. First operand has 64 places, 60 transitions, 228 flow. Second operand 5 states and 184 transitions. [2024-06-28 01:00:49,674 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 68 places, 94 transitions, 474 flow [2024-06-28 01:00:49,676 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 68 places, 94 transitions, 470 flow, removed 2 selfloop flow, removed 0 redundant places. [2024-06-28 01:00:49,677 INFO L231 Difference]: Finished difference. Result has 69 places, 63 transitions, 280 flow [2024-06-28 01:00:49,677 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=54, PETRI_DIFFERENCE_MINUEND_FLOW=224, PETRI_DIFFERENCE_MINUEND_PLACES=64, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=60, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=48, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=280, PETRI_PLACES=69, PETRI_TRANSITIONS=63} [2024-06-28 01:00:49,678 INFO L281 CegarLoopForPetriNet]: 60 programPoint places, 9 predicate places. [2024-06-28 01:00:49,678 INFO L495 AbstractCegarLoop]: Abstraction has has 69 places, 63 transitions, 280 flow [2024-06-28 01:00:49,678 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 23.8) internal successors, (119), 5 states have internal predecessors, (119), 0 states have call successors, (0), 0 states 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 01:00:49,679 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:00:49,679 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:00:49,679 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-06-28 01:00:49,679 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 01:00:49,679 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:00:49,679 INFO L85 PathProgramCache]: Analyzing trace with hash 1166629309, now seen corresponding path program 1 times [2024-06-28 01:00:49,680 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:00:49,680 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1295067987] [2024-06-28 01:00:49,680 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:00:49,680 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:00:49,686 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:00:49,944 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 01:00:49,944 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:00:49,944 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1295067987] [2024-06-28 01:00:49,945 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1295067987] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:00:49,945 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:00:49,945 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-06-28 01:00:49,945 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [582779433] [2024-06-28 01:00:49,945 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:00:49,945 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-06-28 01:00:49,946 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:00:49,946 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-06-28 01:00:49,946 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-06-28 01:00:49,989 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 21 out of 54 [2024-06-28 01:00:49,990 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 69 places, 63 transitions, 280 flow. Second operand has 6 states, 6 states have (on average 22.666666666666668) internal successors, (136), 6 states have internal predecessors, (136), 0 states have call successors, (0), 0 states 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 01:00:49,990 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:00:49,990 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 21 of 54 [2024-06-28 01:00:49,990 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:00:50,598 INFO L124 PetriNetUnfolderBase]: 5356/7946 cut-off events. [2024-06-28 01:00:50,599 INFO L125 PetriNetUnfolderBase]: For 8759/8807 co-relation queries the response was YES. [2024-06-28 01:00:50,614 INFO L83 FinitePrefix]: Finished finitePrefix Result has 22643 conditions, 7946 events. 5356/7946 cut-off events. For 8759/8807 co-relation queries the response was YES. Maximal size of possible extension queue 389. Compared 47877 event pairs, 1862 based on Foata normal form. 16/7918 useless extension candidates. Maximal degree in co-relation 22624. Up to 7111 conditions per place. [2024-06-28 01:00:50,649 INFO L140 encePairwiseOnDemand]: 43/54 looper letters, 61 selfloop transitions, 17 changer transitions 0/94 dead transitions. [2024-06-28 01:00:50,649 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 72 places, 94 transitions, 538 flow [2024-06-28 01:00:50,649 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-06-28 01:00:50,650 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-06-28 01:00:50,650 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 152 transitions. [2024-06-28 01:00:50,650 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.7037037037037037 [2024-06-28 01:00:50,650 INFO L175 Difference]: Start difference. First operand has 69 places, 63 transitions, 280 flow. Second operand 4 states and 152 transitions. [2024-06-28 01:00:50,651 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 72 places, 94 transitions, 538 flow [2024-06-28 01:00:50,658 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 69 places, 94 transitions, 508 flow, removed 5 selfloop flow, removed 3 redundant places. [2024-06-28 01:00:50,659 INFO L231 Difference]: Finished difference. Result has 70 places, 69 transitions, 348 flow [2024-06-28 01:00:50,660 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=54, PETRI_DIFFERENCE_MINUEND_FLOW=250, PETRI_DIFFERENCE_MINUEND_PLACES=66, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=63, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=46, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=348, PETRI_PLACES=70, PETRI_TRANSITIONS=69} [2024-06-28 01:00:50,660 INFO L281 CegarLoopForPetriNet]: 60 programPoint places, 10 predicate places. [2024-06-28 01:00:50,660 INFO L495 AbstractCegarLoop]: Abstraction has has 70 places, 69 transitions, 348 flow [2024-06-28 01:00:50,661 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 22.666666666666668) internal successors, (136), 6 states have internal predecessors, (136), 0 states have call successors, (0), 0 states 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 01:00:50,661 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:00:50,661 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:00:50,661 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-06-28 01:00:50,661 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 01:00:50,662 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:00:50,662 INFO L85 PathProgramCache]: Analyzing trace with hash 1166749279, now seen corresponding path program 2 times [2024-06-28 01:00:50,662 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:00:50,662 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [590230136] [2024-06-28 01:00:50,662 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:00:50,663 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:00:50,668 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:00:50,807 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 01:00:50,807 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:00:50,807 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [590230136] [2024-06-28 01:00:50,807 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [590230136] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:00:50,807 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:00:50,807 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-06-28 01:00:50,808 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [514239161] [2024-06-28 01:00:50,808 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:00:50,808 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-06-28 01:00:50,808 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:00:50,808 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-06-28 01:00:50,809 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2024-06-28 01:00:50,841 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 21 out of 54 [2024-06-28 01:00:50,842 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 70 places, 69 transitions, 348 flow. Second operand has 6 states, 6 states have (on average 22.666666666666668) internal successors, (136), 6 states have internal predecessors, (136), 0 states have call successors, (0), 0 states 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 01:00:50,842 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:00:50,842 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 21 of 54 [2024-06-28 01:00:50,842 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:00:51,411 INFO L124 PetriNetUnfolderBase]: 5347/8259 cut-off events. [2024-06-28 01:00:51,411 INFO L125 PetriNetUnfolderBase]: For 14372/14562 co-relation queries the response was YES. [2024-06-28 01:00:51,427 INFO L83 FinitePrefix]: Finished finitePrefix Result has 25746 conditions, 8259 events. 5347/8259 cut-off events. For 14372/14562 co-relation queries the response was YES. Maximal size of possible extension queue 401. Compared 52293 event pairs, 2667 based on Foata normal form. 18/8174 useless extension candidates. Maximal degree in co-relation 25726. Up to 7179 conditions per place. [2024-06-28 01:00:51,462 INFO L140 encePairwiseOnDemand]: 44/54 looper letters, 76 selfloop transitions, 20 changer transitions 0/112 dead transitions. [2024-06-28 01:00:51,462 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 74 places, 112 transitions, 710 flow [2024-06-28 01:00:51,463 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-06-28 01:00:51,463 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-06-28 01:00:51,463 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 184 transitions. [2024-06-28 01:00:51,463 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6814814814814815 [2024-06-28 01:00:51,464 INFO L175 Difference]: Start difference. First operand has 70 places, 69 transitions, 348 flow. Second operand 5 states and 184 transitions. [2024-06-28 01:00:51,464 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 74 places, 112 transitions, 710 flow [2024-06-28 01:00:51,479 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 72 places, 112 transitions, 644 flow, removed 18 selfloop flow, removed 2 redundant places. [2024-06-28 01:00:51,480 INFO L231 Difference]: Finished difference. Result has 75 places, 80 transitions, 463 flow [2024-06-28 01:00:51,481 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=54, PETRI_DIFFERENCE_MINUEND_FLOW=302, PETRI_DIFFERENCE_MINUEND_PLACES=68, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=69, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=50, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=463, PETRI_PLACES=75, PETRI_TRANSITIONS=80} [2024-06-28 01:00:51,481 INFO L281 CegarLoopForPetriNet]: 60 programPoint places, 15 predicate places. [2024-06-28 01:00:51,481 INFO L495 AbstractCegarLoop]: Abstraction has has 75 places, 80 transitions, 463 flow [2024-06-28 01:00:51,482 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 22.666666666666668) internal successors, (136), 6 states have internal predecessors, (136), 0 states have call successors, (0), 0 states 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 01:00:51,482 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:00:51,482 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:00:51,482 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-06-28 01:00:51,482 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 01:00:51,482 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:00:51,483 INFO L85 PathProgramCache]: Analyzing trace with hash -846851332, now seen corresponding path program 1 times [2024-06-28 01:00:51,483 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:00:51,483 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1580285215] [2024-06-28 01:00:51,483 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:00:51,483 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:00:51,489 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:00:51,618 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 01:00:51,618 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:00:51,618 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1580285215] [2024-06-28 01:00:51,618 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1580285215] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:00:51,619 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:00:51,619 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-28 01:00:51,619 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1259307309] [2024-06-28 01:00:51,619 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:00:51,619 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-28 01:00:51,619 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:00:51,619 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-28 01:00:51,620 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2024-06-28 01:00:51,666 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 21 out of 54 [2024-06-28 01:00:51,666 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 75 places, 80 transitions, 463 flow. Second operand has 7 states, 7 states have (on average 22.571428571428573) internal successors, (158), 7 states have internal predecessors, (158), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:00:51,666 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:00:51,666 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 21 of 54 [2024-06-28 01:00:51,666 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:00:52,547 INFO L124 PetriNetUnfolderBase]: 7424/11243 cut-off events. [2024-06-28 01:00:52,547 INFO L125 PetriNetUnfolderBase]: For 26568/26779 co-relation queries the response was YES. [2024-06-28 01:00:52,573 INFO L83 FinitePrefix]: Finished finitePrefix Result has 37635 conditions, 11243 events. 7424/11243 cut-off events. For 26568/26779 co-relation queries the response was YES. Maximal size of possible extension queue 540. Compared 72790 event pairs, 1784 based on Foata normal form. 104/11204 useless extension candidates. Maximal degree in co-relation 37612. Up to 7434 conditions per place. [2024-06-28 01:00:52,629 INFO L140 encePairwiseOnDemand]: 43/54 looper letters, 97 selfloop transitions, 34 changer transitions 0/147 dead transitions. [2024-06-28 01:00:52,629 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 80 places, 147 transitions, 997 flow [2024-06-28 01:00:52,629 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-28 01:00:52,630 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-28 01:00:52,630 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 236 transitions. [2024-06-28 01:00:52,630 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.7283950617283951 [2024-06-28 01:00:52,630 INFO L175 Difference]: Start difference. First operand has 75 places, 80 transitions, 463 flow. Second operand 6 states and 236 transitions. [2024-06-28 01:00:52,630 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 80 places, 147 transitions, 997 flow [2024-06-28 01:00:52,649 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 80 places, 147 transitions, 965 flow, removed 16 selfloop flow, removed 0 redundant places. [2024-06-28 01:00:52,652 INFO L231 Difference]: Finished difference. Result has 82 places, 88 transitions, 610 flow [2024-06-28 01:00:52,652 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=54, PETRI_DIFFERENCE_MINUEND_FLOW=431, PETRI_DIFFERENCE_MINUEND_PLACES=75, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=80, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=28, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=49, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=610, PETRI_PLACES=82, PETRI_TRANSITIONS=88} [2024-06-28 01:00:52,654 INFO L281 CegarLoopForPetriNet]: 60 programPoint places, 22 predicate places. [2024-06-28 01:00:52,654 INFO L495 AbstractCegarLoop]: Abstraction has has 82 places, 88 transitions, 610 flow [2024-06-28 01:00:52,654 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 22.571428571428573) internal successors, (158), 7 states have internal predecessors, (158), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:00:52,654 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:00:52,654 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:00:52,654 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-06-28 01:00:52,654 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 01:00:52,655 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:00:52,655 INFO L85 PathProgramCache]: Analyzing trace with hash 1951895674, now seen corresponding path program 2 times [2024-06-28 01:00:52,655 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:00:52,655 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [238516866] [2024-06-28 01:00:52,655 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:00:52,655 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:00:52,662 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:00:52,804 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 01:00:52,804 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:00:52,805 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [238516866] [2024-06-28 01:00:52,805 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [238516866] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:00:52,805 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:00:52,805 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-28 01:00:52,805 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [389207195] [2024-06-28 01:00:52,805 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:00:52,805 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-28 01:00:52,806 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:00:52,806 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-28 01:00:52,806 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2024-06-28 01:00:52,850 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 21 out of 54 [2024-06-28 01:00:52,850 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 82 places, 88 transitions, 610 flow. Second operand has 7 states, 7 states have (on average 22.571428571428573) internal successors, (158), 7 states have internal predecessors, (158), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:00:52,850 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:00:52,850 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 21 of 54 [2024-06-28 01:00:52,850 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:00:53,625 INFO L124 PetriNetUnfolderBase]: 7154/10697 cut-off events. [2024-06-28 01:00:53,626 INFO L125 PetriNetUnfolderBase]: For 35227/35458 co-relation queries the response was YES. [2024-06-28 01:00:53,649 INFO L83 FinitePrefix]: Finished finitePrefix Result has 39126 conditions, 10697 events. 7154/10697 cut-off events. For 35227/35458 co-relation queries the response was YES. Maximal size of possible extension queue 517. Compared 68227 event pairs, 2009 based on Foata normal form. 122/10718 useless extension candidates. Maximal degree in co-relation 39099. Up to 8506 conditions per place. [2024-06-28 01:00:53,693 INFO L140 encePairwiseOnDemand]: 43/54 looper letters, 85 selfloop transitions, 29 changer transitions 0/130 dead transitions. [2024-06-28 01:00:53,693 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 86 places, 130 transitions, 980 flow [2024-06-28 01:00:53,695 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-06-28 01:00:53,695 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-06-28 01:00:53,696 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 192 transitions. [2024-06-28 01:00:53,696 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.7111111111111111 [2024-06-28 01:00:53,696 INFO L175 Difference]: Start difference. First operand has 82 places, 88 transitions, 610 flow. Second operand 5 states and 192 transitions. [2024-06-28 01:00:53,696 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 86 places, 130 transitions, 980 flow [2024-06-28 01:00:53,749 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 84 places, 130 transitions, 928 flow, removed 13 selfloop flow, removed 2 redundant places. [2024-06-28 01:00:53,751 INFO L231 Difference]: Finished difference. Result has 85 places, 90 transitions, 662 flow [2024-06-28 01:00:53,751 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=54, PETRI_DIFFERENCE_MINUEND_FLOW=564, PETRI_DIFFERENCE_MINUEND_PLACES=80, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=88, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=27, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=59, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=662, PETRI_PLACES=85, PETRI_TRANSITIONS=90} [2024-06-28 01:00:53,753 INFO L281 CegarLoopForPetriNet]: 60 programPoint places, 25 predicate places. [2024-06-28 01:00:53,753 INFO L495 AbstractCegarLoop]: Abstraction has has 85 places, 90 transitions, 662 flow [2024-06-28 01:00:53,753 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 22.571428571428573) internal successors, (158), 7 states have internal predecessors, (158), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:00:53,753 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:00:53,753 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:00:53,754 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-06-28 01:00:53,754 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 01:00:53,754 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:00:53,754 INFO L85 PathProgramCache]: Analyzing trace with hash 259646238, now seen corresponding path program 3 times [2024-06-28 01:00:53,754 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:00:53,754 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1912296711] [2024-06-28 01:00:53,754 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:00:53,754 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:00:53,760 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:00:53,903 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 01:00:53,903 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:00:53,903 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1912296711] [2024-06-28 01:00:53,903 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1912296711] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:00:53,904 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:00:53,904 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-28 01:00:53,904 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1044036800] [2024-06-28 01:00:53,904 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:00:53,904 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-28 01:00:53,904 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:00:53,905 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-28 01:00:53,905 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2024-06-28 01:00:53,939 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 21 out of 54 [2024-06-28 01:00:53,939 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 85 places, 90 transitions, 662 flow. Second operand has 7 states, 7 states have (on average 22.571428571428573) internal successors, (158), 7 states have internal predecessors, (158), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:00:53,940 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:00:53,940 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 21 of 54 [2024-06-28 01:00:53,940 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:00:54,804 INFO L124 PetriNetUnfolderBase]: 7269/11193 cut-off events. [2024-06-28 01:00:54,805 INFO L125 PetriNetUnfolderBase]: For 37555/37840 co-relation queries the response was YES. [2024-06-28 01:00:54,846 INFO L83 FinitePrefix]: Finished finitePrefix Result has 40739 conditions, 11193 events. 7269/11193 cut-off events. For 37555/37840 co-relation queries the response was YES. Maximal size of possible extension queue 533. Compared 73958 event pairs, 3097 based on Foata normal form. 34/11081 useless extension candidates. Maximal degree in co-relation 40710. Up to 9705 conditions per place. [2024-06-28 01:00:54,901 INFO L140 encePairwiseOnDemand]: 44/54 looper letters, 99 selfloop transitions, 22 changer transitions 0/137 dead transitions. [2024-06-28 01:00:54,901 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 90 places, 137 transitions, 1048 flow [2024-06-28 01:00:54,901 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-28 01:00:54,902 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-28 01:00:54,902 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 220 transitions. [2024-06-28 01:00:54,902 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6790123456790124 [2024-06-28 01:00:54,902 INFO L175 Difference]: Start difference. First operand has 85 places, 90 transitions, 662 flow. Second operand 6 states and 220 transitions. [2024-06-28 01:00:54,903 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 90 places, 137 transitions, 1048 flow [2024-06-28 01:00:54,971 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 87 places, 137 transitions, 1000 flow, removed 1 selfloop flow, removed 3 redundant places. [2024-06-28 01:00:54,972 INFO L231 Difference]: Finished difference. Result has 88 places, 92 transitions, 698 flow [2024-06-28 01:00:54,973 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=54, PETRI_DIFFERENCE_MINUEND_FLOW=614, PETRI_DIFFERENCE_MINUEND_PLACES=82, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=90, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=20, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=68, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=698, PETRI_PLACES=88, PETRI_TRANSITIONS=92} [2024-06-28 01:00:54,975 INFO L281 CegarLoopForPetriNet]: 60 programPoint places, 28 predicate places. [2024-06-28 01:00:54,975 INFO L495 AbstractCegarLoop]: Abstraction has has 88 places, 92 transitions, 698 flow [2024-06-28 01:00:54,975 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 22.571428571428573) internal successors, (158), 7 states have internal predecessors, (158), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:00:54,975 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:00:54,975 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:00:54,975 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-06-28 01:00:54,975 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 01:00:54,976 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:00:54,976 INFO L85 PathProgramCache]: Analyzing trace with hash 1115731988, now seen corresponding path program 1 times [2024-06-28 01:00:54,976 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:00:54,976 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [269514025] [2024-06-28 01:00:54,976 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:00:54,976 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:00:54,990 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:00:55,120 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 01:00:55,121 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:00:55,121 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [269514025] [2024-06-28 01:00:55,121 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [269514025] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:00:55,121 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:00:55,121 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-28 01:00:55,122 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1135654330] [2024-06-28 01:00:55,123 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:00:55,125 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-28 01:00:55,126 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:00:55,126 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-28 01:00:55,127 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2024-06-28 01:00:55,188 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 21 out of 54 [2024-06-28 01:00:55,189 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 88 places, 92 transitions, 698 flow. Second operand has 7 states, 7 states have (on average 22.571428571428573) internal successors, (158), 7 states have internal predecessors, (158), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:00:55,189 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:00:55,189 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 21 of 54 [2024-06-28 01:00:55,189 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:00:55,938 INFO L124 PetriNetUnfolderBase]: 7230/11088 cut-off events. [2024-06-28 01:00:55,939 INFO L125 PetriNetUnfolderBase]: For 40509/40794 co-relation queries the response was YES. [2024-06-28 01:00:55,968 INFO L83 FinitePrefix]: Finished finitePrefix Result has 40871 conditions, 11088 events. 7230/11088 cut-off events. For 40509/40794 co-relation queries the response was YES. Maximal size of possible extension queue 528. Compared 72573 event pairs, 2735 based on Foata normal form. 28/10960 useless extension candidates. Maximal degree in co-relation 40841. Up to 9216 conditions per place. [2024-06-28 01:00:56,014 INFO L140 encePairwiseOnDemand]: 44/54 looper letters, 99 selfloop transitions, 28 changer transitions 0/143 dead transitions. [2024-06-28 01:00:56,015 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 92 places, 143 transitions, 1111 flow [2024-06-28 01:00:56,015 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-28 01:00:56,015 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-28 01:00:56,016 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 222 transitions. [2024-06-28 01:00:56,016 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6851851851851852 [2024-06-28 01:00:56,016 INFO L175 Difference]: Start difference. First operand has 88 places, 92 transitions, 698 flow. Second operand 6 states and 222 transitions. [2024-06-28 01:00:56,016 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 92 places, 143 transitions, 1111 flow [2024-06-28 01:00:56,084 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 88 places, 143 transitions, 1057 flow, removed 7 selfloop flow, removed 4 redundant places. [2024-06-28 01:00:56,086 INFO L231 Difference]: Finished difference. Result has 90 places, 94 transitions, 752 flow [2024-06-28 01:00:56,086 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=54, PETRI_DIFFERENCE_MINUEND_FLOW=626, PETRI_DIFFERENCE_MINUEND_PLACES=83, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=91, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=25, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=63, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=752, PETRI_PLACES=90, PETRI_TRANSITIONS=94} [2024-06-28 01:00:56,086 INFO L281 CegarLoopForPetriNet]: 60 programPoint places, 30 predicate places. [2024-06-28 01:00:56,087 INFO L495 AbstractCegarLoop]: Abstraction has has 90 places, 94 transitions, 752 flow [2024-06-28 01:00:56,087 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 22.571428571428573) internal successors, (158), 7 states have internal predecessors, (158), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:00:56,087 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:00:56,087 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:00:56,087 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-06-28 01:00:56,087 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 01:00:56,088 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:00:56,088 INFO L85 PathProgramCache]: Analyzing trace with hash -41276366, now seen corresponding path program 1 times [2024-06-28 01:00:56,088 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:00:56,088 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [681708498] [2024-06-28 01:00:56,088 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:00:56,088 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:00:56,094 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:00:56,191 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 01:00:56,191 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:00:56,191 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [681708498] [2024-06-28 01:00:56,191 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [681708498] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:00:56,191 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:00:56,191 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-06-28 01:00:56,192 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [87319407] [2024-06-28 01:00:56,192 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:00:56,192 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-06-28 01:00:56,192 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:00:56,192 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-06-28 01:00:56,193 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2024-06-28 01:00:56,231 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 22 out of 54 [2024-06-28 01:00:56,232 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 90 places, 94 transitions, 752 flow. Second operand has 5 states, 5 states have (on average 24.4) internal successors, (122), 5 states have internal predecessors, (122), 0 states have call successors, (0), 0 states 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 01:00:56,232 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:00:56,232 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 22 of 54 [2024-06-28 01:00:56,232 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:00:56,821 INFO L124 PetriNetUnfolderBase]: 5825/8926 cut-off events. [2024-06-28 01:00:56,821 INFO L125 PetriNetUnfolderBase]: For 39560/39799 co-relation queries the response was YES. [2024-06-28 01:00:56,846 INFO L83 FinitePrefix]: Finished finitePrefix Result has 34998 conditions, 8926 events. 5825/8926 cut-off events. For 39560/39799 co-relation queries the response was YES. Maximal size of possible extension queue 443. Compared 57911 event pairs, 2641 based on Foata normal form. 6/8815 useless extension candidates. Maximal degree in co-relation 34966. Up to 8021 conditions per place. [2024-06-28 01:00:56,886 INFO L140 encePairwiseOnDemand]: 45/54 looper letters, 95 selfloop transitions, 20 changer transitions 0/132 dead transitions. [2024-06-28 01:00:56,887 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 94 places, 132 transitions, 1150 flow [2024-06-28 01:00:56,888 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-06-28 01:00:56,888 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-06-28 01:00:56,888 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 181 transitions. [2024-06-28 01:00:56,888 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6703703703703704 [2024-06-28 01:00:56,889 INFO L175 Difference]: Start difference. First operand has 90 places, 94 transitions, 752 flow. Second operand 5 states and 181 transitions. [2024-06-28 01:00:56,889 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 94 places, 132 transitions, 1150 flow [2024-06-28 01:00:56,937 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 91 places, 132 transitions, 1091 flow, removed 9 selfloop flow, removed 3 redundant places. [2024-06-28 01:00:56,938 INFO L231 Difference]: Finished difference. Result has 94 places, 105 transitions, 882 flow [2024-06-28 01:00:56,939 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=54, PETRI_DIFFERENCE_MINUEND_FLOW=693, PETRI_DIFFERENCE_MINUEND_PLACES=87, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=94, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=75, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=882, PETRI_PLACES=94, PETRI_TRANSITIONS=105} [2024-06-28 01:00:56,939 INFO L281 CegarLoopForPetriNet]: 60 programPoint places, 34 predicate places. [2024-06-28 01:00:56,939 INFO L495 AbstractCegarLoop]: Abstraction has has 94 places, 105 transitions, 882 flow [2024-06-28 01:00:56,939 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 24.4) internal successors, (122), 5 states have internal predecessors, (122), 0 states have call successors, (0), 0 states 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 01:00:56,939 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:00:56,939 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:00:56,939 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2024-06-28 01:00:56,940 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 01:00:56,940 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:00:56,940 INFO L85 PathProgramCache]: Analyzing trace with hash 1946356509, now seen corresponding path program 1 times [2024-06-28 01:00:56,940 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:00:56,940 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [685743577] [2024-06-28 01:00:56,940 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:00:56,940 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:00:56,947 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:00:57,039 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 01:00:57,040 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:00:57,040 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [685743577] [2024-06-28 01:00:57,040 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [685743577] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:00:57,040 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:00:57,040 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-06-28 01:00:57,040 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1348236119] [2024-06-28 01:00:57,041 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:00:57,041 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-06-28 01:00:57,041 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:00:57,041 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-06-28 01:00:57,042 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-06-28 01:00:57,071 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 22 out of 54 [2024-06-28 01:00:57,071 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 94 places, 105 transitions, 882 flow. Second operand has 4 states, 4 states have (on average 25.5) internal successors, (102), 4 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 01:00:57,072 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:00:57,072 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 22 of 54 [2024-06-28 01:00:57,072 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:00:58,025 INFO L124 PetriNetUnfolderBase]: 8314/12804 cut-off events. [2024-06-28 01:00:58,025 INFO L125 PetriNetUnfolderBase]: For 59026/59232 co-relation queries the response was YES. [2024-06-28 01:00:58,071 INFO L83 FinitePrefix]: Finished finitePrefix Result has 47739 conditions, 12804 events. 8314/12804 cut-off events. For 59026/59232 co-relation queries the response was YES. Maximal size of possible extension queue 637. Compared 87204 event pairs, 3852 based on Foata normal form. 49/12589 useless extension candidates. Maximal degree in co-relation 47704. Up to 11080 conditions per place. [2024-06-28 01:00:58,132 INFO L140 encePairwiseOnDemand]: 47/54 looper letters, 82 selfloop transitions, 11 changer transitions 0/130 dead transitions. [2024-06-28 01:00:58,132 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 97 places, 130 transitions, 1174 flow [2024-06-28 01:00:58,133 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-06-28 01:00:58,133 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-06-28 01:00:58,133 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 140 transitions. [2024-06-28 01:00:58,133 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6481481481481481 [2024-06-28 01:00:58,134 INFO L175 Difference]: Start difference. First operand has 94 places, 105 transitions, 882 flow. Second operand 4 states and 140 transitions. [2024-06-28 01:00:58,134 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 97 places, 130 transitions, 1174 flow [2024-06-28 01:00:58,252 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 97 places, 130 transitions, 1132 flow, removed 21 selfloop flow, removed 0 redundant places. [2024-06-28 01:00:58,254 INFO L231 Difference]: Finished difference. Result has 99 places, 115 transitions, 963 flow [2024-06-28 01:00:58,254 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=54, PETRI_DIFFERENCE_MINUEND_FLOW=840, PETRI_DIFFERENCE_MINUEND_PLACES=94, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=105, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=96, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=963, PETRI_PLACES=99, PETRI_TRANSITIONS=115} [2024-06-28 01:00:58,254 INFO L281 CegarLoopForPetriNet]: 60 programPoint places, 39 predicate places. [2024-06-28 01:00:58,255 INFO L495 AbstractCegarLoop]: Abstraction has has 99 places, 115 transitions, 963 flow [2024-06-28 01:00:58,255 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 25.5) internal successors, (102), 4 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 01:00:58,255 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:00:58,255 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 01:00:58,255 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2024-06-28 01:00:58,255 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 01:00:58,256 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:00:58,256 INFO L85 PathProgramCache]: Analyzing trace with hash -435038649, now seen corresponding path program 1 times [2024-06-28 01:00:58,256 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:00:58,256 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [704082185] [2024-06-28 01:00:58,256 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:00:58,256 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:00:58,263 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:00:58,386 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:00:58,386 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:00:58,386 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [704082185] [2024-06-28 01:00:58,386 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [704082185] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:00:58,386 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:00:58,386 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-06-28 01:00:58,387 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1964308904] [2024-06-28 01:00:58,387 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:00:58,387 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-06-28 01:00:58,387 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:00:58,388 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-06-28 01:00:58,388 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-06-28 01:00:58,442 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 22 out of 54 [2024-06-28 01:00:58,443 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 99 places, 115 transitions, 963 flow. Second operand has 6 states, 6 states have (on average 24.166666666666668) internal successors, (145), 6 states have internal predecessors, (145), 0 states have call successors, (0), 0 states 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 01:00:58,443 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:00:58,443 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 22 of 54 [2024-06-28 01:00:58,443 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:00:59,267 INFO L124 PetriNetUnfolderBase]: 7110/11050 cut-off events. [2024-06-28 01:00:59,267 INFO L125 PetriNetUnfolderBase]: For 60669/61015 co-relation queries the response was YES. [2024-06-28 01:00:59,302 INFO L83 FinitePrefix]: Finished finitePrefix Result has 46239 conditions, 11050 events. 7110/11050 cut-off events. For 60669/61015 co-relation queries the response was YES. Maximal size of possible extension queue 548. Compared 74619 event pairs, 2761 based on Foata normal form. 60/10955 useless extension candidates. Maximal degree in co-relation 46200. Up to 8915 conditions per place. [2024-06-28 01:00:59,345 INFO L140 encePairwiseOnDemand]: 45/54 looper letters, 112 selfloop transitions, 32 changer transitions 0/165 dead transitions. [2024-06-28 01:00:59,346 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 104 places, 165 transitions, 1502 flow [2024-06-28 01:00:59,346 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-28 01:00:59,346 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-28 01:00:59,347 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 222 transitions. [2024-06-28 01:00:59,347 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6851851851851852 [2024-06-28 01:00:59,347 INFO L175 Difference]: Start difference. First operand has 99 places, 115 transitions, 963 flow. Second operand 6 states and 222 transitions. [2024-06-28 01:00:59,347 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 104 places, 165 transitions, 1502 flow [2024-06-28 01:00:59,442 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 104 places, 165 transitions, 1498 flow, removed 2 selfloop flow, removed 0 redundant places. [2024-06-28 01:00:59,444 INFO L231 Difference]: Finished difference. Result has 106 places, 120 transitions, 1133 flow [2024-06-28 01:00:59,444 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=54, PETRI_DIFFERENCE_MINUEND_FLOW=959, PETRI_DIFFERENCE_MINUEND_PLACES=99, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=115, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=29, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=85, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=1133, PETRI_PLACES=106, PETRI_TRANSITIONS=120} [2024-06-28 01:00:59,445 INFO L281 CegarLoopForPetriNet]: 60 programPoint places, 46 predicate places. [2024-06-28 01:00:59,445 INFO L495 AbstractCegarLoop]: Abstraction has has 106 places, 120 transitions, 1133 flow [2024-06-28 01:00:59,445 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 24.166666666666668) internal successors, (145), 6 states have internal predecessors, (145), 0 states have call successors, (0), 0 states 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 01:00:59,445 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:00:59,445 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 01:00:59,446 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2024-06-28 01:00:59,446 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 01:00:59,446 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:00:59,446 INFO L85 PathProgramCache]: Analyzing trace with hash -432181689, now seen corresponding path program 2 times [2024-06-28 01:00:59,446 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:00:59,446 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1796526726] [2024-06-28 01:00:59,447 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:00:59,447 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:00:59,453 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:00:59,557 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 01:00:59,558 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:00:59,558 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1796526726] [2024-06-28 01:00:59,558 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1796526726] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:00:59,558 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:00:59,558 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-06-28 01:00:59,558 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [69393220] [2024-06-28 01:00:59,559 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:00:59,559 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-06-28 01:00:59,559 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:00:59,559 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-06-28 01:00:59,559 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2024-06-28 01:00:59,612 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 22 out of 54 [2024-06-28 01:00:59,613 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 106 places, 120 transitions, 1133 flow. Second operand has 6 states, 6 states have (on average 24.166666666666668) internal successors, (145), 6 states have internal predecessors, (145), 0 states have call successors, (0), 0 states 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 01:00:59,613 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:00:59,613 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 22 of 54 [2024-06-28 01:00:59,613 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:01:00,408 INFO L124 PetriNetUnfolderBase]: 7034/11012 cut-off events. [2024-06-28 01:01:00,409 INFO L125 PetriNetUnfolderBase]: For 69644/69990 co-relation queries the response was YES. [2024-06-28 01:01:00,447 INFO L83 FinitePrefix]: Finished finitePrefix Result has 47266 conditions, 11012 events. 7034/11012 cut-off events. For 69644/69990 co-relation queries the response was YES. Maximal size of possible extension queue 552. Compared 75208 event pairs, 3040 based on Foata normal form. 68/10925 useless extension candidates. Maximal degree in co-relation 47223. Up to 9447 conditions per place. [2024-06-28 01:01:00,491 INFO L140 encePairwiseOnDemand]: 45/54 looper letters, 110 selfloop transitions, 26 changer transitions 0/157 dead transitions. [2024-06-28 01:01:00,491 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 111 places, 157 transitions, 1505 flow [2024-06-28 01:01:00,491 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-28 01:01:00,491 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-28 01:01:00,492 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 215 transitions. [2024-06-28 01:01:00,492 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6635802469135802 [2024-06-28 01:01:00,492 INFO L175 Difference]: Start difference. First operand has 106 places, 120 transitions, 1133 flow. Second operand 6 states and 215 transitions. [2024-06-28 01:01:00,492 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 111 places, 157 transitions, 1505 flow [2024-06-28 01:01:00,658 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 108 places, 157 transitions, 1423 flow, removed 18 selfloop flow, removed 3 redundant places. [2024-06-28 01:01:00,664 INFO L231 Difference]: Finished difference. Result has 109 places, 120 transitions, 1111 flow [2024-06-28 01:01:00,665 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=54, PETRI_DIFFERENCE_MINUEND_FLOW=1051, PETRI_DIFFERENCE_MINUEND_PLACES=103, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=120, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=26, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=94, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=1111, PETRI_PLACES=109, PETRI_TRANSITIONS=120} [2024-06-28 01:01:00,665 INFO L281 CegarLoopForPetriNet]: 60 programPoint places, 49 predicate places. [2024-06-28 01:01:00,665 INFO L495 AbstractCegarLoop]: Abstraction has has 109 places, 120 transitions, 1111 flow [2024-06-28 01:01:00,666 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 24.166666666666668) internal successors, (145), 6 states have internal predecessors, (145), 0 states have call successors, (0), 0 states 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 01:01:00,666 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:01:00,666 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 01:01:00,666 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2024-06-28 01:01:00,666 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 01:01:00,666 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:01:00,667 INFO L85 PathProgramCache]: Analyzing trace with hash -167366265, now seen corresponding path program 1 times [2024-06-28 01:01:00,667 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:01:00,667 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [43266457] [2024-06-28 01:01:00,667 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:01:00,667 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:01:00,673 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:01:00,796 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 01:01:00,796 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:01:00,796 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [43266457] [2024-06-28 01:01:00,796 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [43266457] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:01:00,796 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:01:00,796 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-28 01:01:00,797 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1291733205] [2024-06-28 01:01:00,797 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:01:00,797 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-28 01:01:00,797 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:01:00,797 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-28 01:01:00,798 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2024-06-28 01:01:00,855 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 21 out of 54 [2024-06-28 01:01:00,855 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 109 places, 120 transitions, 1111 flow. Second operand has 7 states, 7 states have (on average 23.0) internal successors, (161), 7 states have internal predecessors, (161), 0 states have call successors, (0), 0 states 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 01:01:00,856 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:01:00,856 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 21 of 54 [2024-06-28 01:01:00,856 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:01:01,897 INFO L124 PetriNetUnfolderBase]: 8650/13324 cut-off events. [2024-06-28 01:01:01,897 INFO L125 PetriNetUnfolderBase]: For 77378/77752 co-relation queries the response was YES. [2024-06-28 01:01:01,926 INFO L83 FinitePrefix]: Finished finitePrefix Result has 55578 conditions, 13324 events. 8650/13324 cut-off events. For 77378/77752 co-relation queries the response was YES. Maximal size of possible extension queue 634. Compared 90642 event pairs, 3398 based on Foata normal form. 36/13122 useless extension candidates. Maximal degree in co-relation 55534. Up to 11515 conditions per place. [2024-06-28 01:01:01,973 INFO L140 encePairwiseOnDemand]: 44/54 looper letters, 95 selfloop transitions, 41 changer transitions 0/154 dead transitions. [2024-06-28 01:01:01,973 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 113 places, 154 transitions, 1507 flow [2024-06-28 01:01:01,974 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-06-28 01:01:01,974 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-06-28 01:01:01,974 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 183 transitions. [2024-06-28 01:01:01,974 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6777777777777778 [2024-06-28 01:01:01,974 INFO L175 Difference]: Start difference. First operand has 109 places, 120 transitions, 1111 flow. Second operand 5 states and 183 transitions. [2024-06-28 01:01:01,974 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 113 places, 154 transitions, 1507 flow [2024-06-28 01:01:02,082 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 109 places, 154 transitions, 1451 flow, removed 4 selfloop flow, removed 4 redundant places. [2024-06-28 01:01:02,084 INFO L231 Difference]: Finished difference. Result has 110 places, 124 transitions, 1205 flow [2024-06-28 01:01:02,084 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=54, PETRI_DIFFERENCE_MINUEND_FLOW=1055, PETRI_DIFFERENCE_MINUEND_PLACES=105, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=120, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=37, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=79, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=1205, PETRI_PLACES=110, PETRI_TRANSITIONS=124} [2024-06-28 01:01:02,085 INFO L281 CegarLoopForPetriNet]: 60 programPoint places, 50 predicate places. [2024-06-28 01:01:02,085 INFO L495 AbstractCegarLoop]: Abstraction has has 110 places, 124 transitions, 1205 flow [2024-06-28 01:01:02,085 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 23.0) internal successors, (161), 7 states have internal predecessors, (161), 0 states have call successors, (0), 0 states 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 01:01:02,085 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:01:02,085 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 01:01:02,085 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2024-06-28 01:01:02,086 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 01:01:02,086 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:01:02,086 INFO L85 PathProgramCache]: Analyzing trace with hash 817520029, now seen corresponding path program 2 times [2024-06-28 01:01:02,086 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:01:02,086 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1245233120] [2024-06-28 01:01:02,086 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:01:02,086 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:01:02,094 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:01:02,193 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 01:01:02,193 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:01:02,193 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1245233120] [2024-06-28 01:01:02,195 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1245233120] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:01:02,195 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:01:02,195 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-28 01:01:02,195 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [477957996] [2024-06-28 01:01:02,195 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:01:02,196 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-28 01:01:02,196 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:01:02,196 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-28 01:01:02,196 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2024-06-28 01:01:02,228 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 21 out of 54 [2024-06-28 01:01:02,229 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 110 places, 124 transitions, 1205 flow. Second operand has 7 states, 7 states have (on average 23.0) internal successors, (161), 7 states have internal predecessors, (161), 0 states have call successors, (0), 0 states 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 01:01:02,229 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:01:02,229 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 21 of 54 [2024-06-28 01:01:02,229 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:01:03,133 INFO L124 PetriNetUnfolderBase]: 8718/12830 cut-off events. [2024-06-28 01:01:03,134 INFO L125 PetriNetUnfolderBase]: For 85738/86446 co-relation queries the response was YES. [2024-06-28 01:01:03,180 INFO L83 FinitePrefix]: Finished finitePrefix Result has 58126 conditions, 12830 events. 8718/12830 cut-off events. For 85738/86446 co-relation queries the response was YES. Maximal size of possible extension queue 623. Compared 82108 event pairs, 2500 based on Foata normal form. 94/12743 useless extension candidates. Maximal degree in co-relation 58081. Up to 11536 conditions per place. [2024-06-28 01:01:03,235 INFO L140 encePairwiseOnDemand]: 44/54 looper letters, 103 selfloop transitions, 51 changer transitions 0/172 dead transitions. [2024-06-28 01:01:03,235 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 115 places, 172 transitions, 1775 flow [2024-06-28 01:01:03,236 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-28 01:01:03,236 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-28 01:01:03,237 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 218 transitions. [2024-06-28 01:01:03,237 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6728395061728395 [2024-06-28 01:01:03,237 INFO L175 Difference]: Start difference. First operand has 110 places, 124 transitions, 1205 flow. Second operand 6 states and 218 transitions. [2024-06-28 01:01:03,237 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 115 places, 172 transitions, 1775 flow [2024-06-28 01:01:03,424 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 112 places, 172 transitions, 1673 flow, removed 15 selfloop flow, removed 3 redundant places. [2024-06-28 01:01:03,426 INFO L231 Difference]: Finished difference. Result has 113 places, 132 transitions, 1330 flow [2024-06-28 01:01:03,426 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=54, PETRI_DIFFERENCE_MINUEND_FLOW=1103, PETRI_DIFFERENCE_MINUEND_PLACES=107, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=124, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=47, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=77, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=1330, PETRI_PLACES=113, PETRI_TRANSITIONS=132} [2024-06-28 01:01:03,427 INFO L281 CegarLoopForPetriNet]: 60 programPoint places, 53 predicate places. [2024-06-28 01:01:03,427 INFO L495 AbstractCegarLoop]: Abstraction has has 113 places, 132 transitions, 1330 flow [2024-06-28 01:01:03,427 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 23.0) internal successors, (161), 7 states have internal predecessors, (161), 0 states have call successors, (0), 0 states 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 01:01:03,427 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:01:03,428 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 01:01:03,428 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2024-06-28 01:01:03,428 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 01:01:03,428 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:01:03,428 INFO L85 PathProgramCache]: Analyzing trace with hash 2094359849, now seen corresponding path program 3 times [2024-06-28 01:01:03,429 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:01:03,429 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [24281356] [2024-06-28 01:01:03,429 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:01:03,430 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:01:03,436 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:01:03,545 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:01:03,546 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:01:03,546 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [24281356] [2024-06-28 01:01:03,546 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [24281356] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:01:03,546 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:01:03,546 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-28 01:01:03,546 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [462520141] [2024-06-28 01:01:03,547 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:01:03,547 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-28 01:01:03,547 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:01:03,547 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-28 01:01:03,548 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2024-06-28 01:01:03,580 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 21 out of 54 [2024-06-28 01:01:03,581 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 113 places, 132 transitions, 1330 flow. Second operand has 7 states, 7 states have (on average 23.0) internal successors, (161), 7 states have internal predecessors, (161), 0 states have call successors, (0), 0 states 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 01:01:03,581 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:01:03,581 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 21 of 54 [2024-06-28 01:01:03,581 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:01:04,605 INFO L124 PetriNetUnfolderBase]: 8756/13487 cut-off events. [2024-06-28 01:01:04,605 INFO L125 PetriNetUnfolderBase]: For 103324/103909 co-relation queries the response was YES. [2024-06-28 01:01:04,653 INFO L83 FinitePrefix]: Finished finitePrefix Result has 61829 conditions, 13487 events. 8756/13487 cut-off events. For 103324/103909 co-relation queries the response was YES. Maximal size of possible extension queue 640. Compared 92123 event pairs, 3402 based on Foata normal form. 87/13335 useless extension candidates. Maximal degree in co-relation 61783. Up to 11584 conditions per place. [2024-06-28 01:01:04,871 INFO L140 encePairwiseOnDemand]: 44/54 looper letters, 101 selfloop transitions, 55 changer transitions 0/174 dead transitions. [2024-06-28 01:01:04,871 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 118 places, 174 transitions, 1858 flow [2024-06-28 01:01:04,872 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-28 01:01:04,872 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-28 01:01:04,872 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 216 transitions. [2024-06-28 01:01:04,872 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6666666666666666 [2024-06-28 01:01:04,873 INFO L175 Difference]: Start difference. First operand has 113 places, 132 transitions, 1330 flow. Second operand 6 states and 216 transitions. [2024-06-28 01:01:04,873 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 118 places, 174 transitions, 1858 flow [2024-06-28 01:01:05,042 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 116 places, 174 transitions, 1759 flow, removed 27 selfloop flow, removed 2 redundant places. [2024-06-28 01:01:05,047 INFO L231 Difference]: Finished difference. Result has 117 places, 136 transitions, 1412 flow [2024-06-28 01:01:05,047 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=54, PETRI_DIFFERENCE_MINUEND_FLOW=1235, PETRI_DIFFERENCE_MINUEND_PLACES=111, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=132, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=51, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=81, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=1412, PETRI_PLACES=117, PETRI_TRANSITIONS=136} [2024-06-28 01:01:05,047 INFO L281 CegarLoopForPetriNet]: 60 programPoint places, 57 predicate places. [2024-06-28 01:01:05,048 INFO L495 AbstractCegarLoop]: Abstraction has has 117 places, 136 transitions, 1412 flow [2024-06-28 01:01:05,048 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 23.0) internal successors, (161), 7 states have internal predecessors, (161), 0 states have call successors, (0), 0 states 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 01:01:05,048 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:01:05,048 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 01:01:05,048 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2024-06-28 01:01:05,048 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 01:01:05,049 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:01:05,049 INFO L85 PathProgramCache]: Analyzing trace with hash 989269639, now seen corresponding path program 4 times [2024-06-28 01:01:05,049 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:01:05,049 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1096415685] [2024-06-28 01:01:05,049 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:01:05,049 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:01:05,061 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:01:05,174 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 01:01:05,175 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:01:05,175 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1096415685] [2024-06-28 01:01:05,175 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1096415685] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:01:05,175 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:01:05,175 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-28 01:01:05,175 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [37246532] [2024-06-28 01:01:05,175 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:01:05,176 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-28 01:01:05,177 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:01:05,178 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-28 01:01:05,178 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2024-06-28 01:01:05,217 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 21 out of 54 [2024-06-28 01:01:05,217 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 117 places, 136 transitions, 1412 flow. Second operand has 7 states, 7 states have (on average 23.0) internal successors, (161), 7 states have internal predecessors, (161), 0 states have call successors, (0), 0 states 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 01:01:05,217 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:01:05,217 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 21 of 54 [2024-06-28 01:01:05,217 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:01:06,373 INFO L124 PetriNetUnfolderBase]: 8700/12822 cut-off events. [2024-06-28 01:01:06,373 INFO L125 PetriNetUnfolderBase]: For 102998/103761 co-relation queries the response was YES. [2024-06-28 01:01:06,423 INFO L83 FinitePrefix]: Finished finitePrefix Result has 61329 conditions, 12822 events. 8700/12822 cut-off events. For 102998/103761 co-relation queries the response was YES. Maximal size of possible extension queue 622. Compared 82305 event pairs, 2482 based on Foata normal form. 30/12671 useless extension candidates. Maximal degree in co-relation 61281. Up to 11582 conditions per place. [2024-06-28 01:01:06,487 INFO L140 encePairwiseOnDemand]: 44/54 looper letters, 109 selfloop transitions, 41 changer transitions 0/168 dead transitions. [2024-06-28 01:01:06,487 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 121 places, 168 transitions, 1794 flow [2024-06-28 01:01:06,487 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-06-28 01:01:06,487 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-06-28 01:01:06,488 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 185 transitions. [2024-06-28 01:01:06,488 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6851851851851852 [2024-06-28 01:01:06,488 INFO L175 Difference]: Start difference. First operand has 117 places, 136 transitions, 1412 flow. Second operand 5 states and 185 transitions. [2024-06-28 01:01:06,488 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 121 places, 168 transitions, 1794 flow [2024-06-28 01:01:06,849 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 118 places, 168 transitions, 1639 flow, removed 39 selfloop flow, removed 3 redundant places. [2024-06-28 01:01:06,850 INFO L231 Difference]: Finished difference. Result has 119 places, 136 transitions, 1353 flow [2024-06-28 01:01:06,851 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=54, PETRI_DIFFERENCE_MINUEND_FLOW=1257, PETRI_DIFFERENCE_MINUEND_PLACES=114, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=136, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=41, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=95, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=1353, PETRI_PLACES=119, PETRI_TRANSITIONS=136} [2024-06-28 01:01:06,851 INFO L281 CegarLoopForPetriNet]: 60 programPoint places, 59 predicate places. [2024-06-28 01:01:06,851 INFO L495 AbstractCegarLoop]: Abstraction has has 119 places, 136 transitions, 1353 flow [2024-06-28 01:01:06,851 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 23.0) internal successors, (161), 7 states have internal predecessors, (161), 0 states have call successors, (0), 0 states 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 01:01:06,851 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:01:06,852 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 01:01:06,852 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2024-06-28 01:01:06,852 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 01:01:06,852 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:01:06,852 INFO L85 PathProgramCache]: Analyzing trace with hash 1025315132, now seen corresponding path program 1 times [2024-06-28 01:01:06,852 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:01:06,853 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1731668525] [2024-06-28 01:01:06,853 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:01:06,853 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:01:06,859 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:01:06,956 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 01:01:06,956 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:01:06,956 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1731668525] [2024-06-28 01:01:06,956 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1731668525] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:01:06,956 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:01:06,957 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-06-28 01:01:06,957 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [562801211] [2024-06-28 01:01:06,957 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:01:06,958 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-06-28 01:01:06,958 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:01:06,958 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-06-28 01:01:06,958 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-06-28 01:01:07,000 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 22 out of 54 [2024-06-28 01:01:07,000 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 119 places, 136 transitions, 1353 flow. Second operand has 5 states, 5 states have (on average 25.0) internal successors, (125), 5 states have internal predecessors, (125), 0 states have call successors, (0), 0 states 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 01:01:07,000 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:01:07,001 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 22 of 54 [2024-06-28 01:01:07,001 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:01:08,148 INFO L124 PetriNetUnfolderBase]: 8575/13051 cut-off events. [2024-06-28 01:01:08,149 INFO L125 PetriNetUnfolderBase]: For 114015/114353 co-relation queries the response was YES. [2024-06-28 01:01:08,203 INFO L83 FinitePrefix]: Finished finitePrefix Result has 58656 conditions, 13051 events. 8575/13051 cut-off events. For 114015/114353 co-relation queries the response was YES. Maximal size of possible extension queue 645. Compared 88436 event pairs, 3610 based on Foata normal form. 122/12866 useless extension candidates. Maximal degree in co-relation 58607. Up to 11334 conditions per place. [2024-06-28 01:01:08,269 INFO L140 encePairwiseOnDemand]: 45/54 looper letters, 93 selfloop transitions, 27 changer transitions 0/159 dead transitions. [2024-06-28 01:01:08,270 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 122 places, 159 transitions, 1681 flow [2024-06-28 01:01:08,270 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-06-28 01:01:08,270 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-06-28 01:01:08,270 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 144 transitions. [2024-06-28 01:01:08,271 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6666666666666666 [2024-06-28 01:01:08,271 INFO L175 Difference]: Start difference. First operand has 119 places, 136 transitions, 1353 flow. Second operand 4 states and 144 transitions. [2024-06-28 01:01:08,271 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 122 places, 159 transitions, 1681 flow [2024-06-28 01:01:08,500 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 117 places, 159 transitions, 1566 flow, removed 0 selfloop flow, removed 5 redundant places. [2024-06-28 01:01:08,502 INFO L231 Difference]: Finished difference. Result has 118 places, 142 transitions, 1366 flow [2024-06-28 01:01:08,502 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=54, PETRI_DIFFERENCE_MINUEND_FLOW=1238, PETRI_DIFFERENCE_MINUEND_PLACES=114, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=136, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=21, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=109, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=1366, PETRI_PLACES=118, PETRI_TRANSITIONS=142} [2024-06-28 01:01:08,502 INFO L281 CegarLoopForPetriNet]: 60 programPoint places, 58 predicate places. [2024-06-28 01:01:08,503 INFO L495 AbstractCegarLoop]: Abstraction has has 118 places, 142 transitions, 1366 flow [2024-06-28 01:01:08,503 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 25.0) internal successors, (125), 5 states have internal predecessors, (125), 0 states have call successors, (0), 0 states 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 01:01:08,503 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:01:08,503 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 01:01:08,503 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2024-06-28 01:01:08,503 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 01:01:08,503 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:01:08,504 INFO L85 PathProgramCache]: Analyzing trace with hash 2122141598, now seen corresponding path program 2 times [2024-06-28 01:01:08,504 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:01:08,504 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [13939608] [2024-06-28 01:01:08,504 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:01:08,504 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:01:08,509 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:01:08,596 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 01:01:08,596 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:01:08,596 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [13939608] [2024-06-28 01:01:08,596 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [13939608] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:01:08,597 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:01:08,597 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-06-28 01:01:08,597 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [530345077] [2024-06-28 01:01:08,597 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:01:08,597 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-06-28 01:01:08,597 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:01:08,598 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-06-28 01:01:08,598 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2024-06-28 01:01:08,620 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 22 out of 54 [2024-06-28 01:01:08,620 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 118 places, 142 transitions, 1366 flow. Second operand has 5 states, 5 states have (on average 25.0) internal successors, (125), 5 states have internal predecessors, (125), 0 states have call successors, (0), 0 states 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 01:01:08,621 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:01:08,621 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 22 of 54 [2024-06-28 01:01:08,621 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:01:09,696 INFO L124 PetriNetUnfolderBase]: 8548/13034 cut-off events. [2024-06-28 01:01:09,696 INFO L125 PetriNetUnfolderBase]: For 122659/122974 co-relation queries the response was YES. [2024-06-28 01:01:09,756 INFO L83 FinitePrefix]: Finished finitePrefix Result has 62011 conditions, 13034 events. 8548/13034 cut-off events. For 122659/122974 co-relation queries the response was YES. Maximal size of possible extension queue 647. Compared 88472 event pairs, 3616 based on Foata normal form. 111/12860 useless extension candidates. Maximal degree in co-relation 61961. Up to 11371 conditions per place. [2024-06-28 01:01:09,815 INFO L140 encePairwiseOnDemand]: 46/54 looper letters, 105 selfloop transitions, 29 changer transitions 0/173 dead transitions. [2024-06-28 01:01:09,815 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 122 places, 173 transitions, 1821 flow [2024-06-28 01:01:09,816 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-06-28 01:01:09,816 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-06-28 01:01:09,816 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 171 transitions. [2024-06-28 01:01:09,816 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6333333333333333 [2024-06-28 01:01:09,816 INFO L175 Difference]: Start difference. First operand has 118 places, 142 transitions, 1366 flow. Second operand 5 states and 171 transitions. [2024-06-28 01:01:09,816 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 122 places, 173 transitions, 1821 flow [2024-06-28 01:01:10,115 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 120 places, 173 transitions, 1730 flow, removed 21 selfloop flow, removed 2 redundant places. [2024-06-28 01:01:10,117 INFO L231 Difference]: Finished difference. Result has 123 places, 155 transitions, 1540 flow [2024-06-28 01:01:10,117 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=54, PETRI_DIFFERENCE_MINUEND_FLOW=1302, PETRI_DIFFERENCE_MINUEND_PLACES=116, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=142, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=17, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=114, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=1540, PETRI_PLACES=123, PETRI_TRANSITIONS=155} [2024-06-28 01:01:10,118 INFO L281 CegarLoopForPetriNet]: 60 programPoint places, 63 predicate places. [2024-06-28 01:01:10,118 INFO L495 AbstractCegarLoop]: Abstraction has has 123 places, 155 transitions, 1540 flow [2024-06-28 01:01:10,118 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 25.0) internal successors, (125), 5 states have internal predecessors, (125), 0 states have call successors, (0), 0 states 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 01:01:10,118 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:01:10,118 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 01:01:10,118 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2024-06-28 01:01:10,118 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 01:01:10,119 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:01:10,119 INFO L85 PathProgramCache]: Analyzing trace with hash 2127384380, now seen corresponding path program 1 times [2024-06-28 01:01:10,119 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:01:10,119 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1860098781] [2024-06-28 01:01:10,119 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:01:10,119 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:01:10,125 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:01:10,206 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:01:10,207 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:01:10,207 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1860098781] [2024-06-28 01:01:10,207 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1860098781] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:01:10,207 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:01:10,207 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-06-28 01:01:10,207 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [631647796] [2024-06-28 01:01:10,207 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:01:10,208 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-06-28 01:01:10,208 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:01:10,208 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-06-28 01:01:10,209 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2024-06-28 01:01:10,233 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 20 out of 54 [2024-06-28 01:01:10,233 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 123 places, 155 transitions, 1540 flow. Second operand has 5 states, 5 states have (on average 23.0) internal successors, (115), 5 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 01:01:10,233 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:01:10,234 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 20 of 54 [2024-06-28 01:01:10,234 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:01:11,320 INFO L124 PetriNetUnfolderBase]: 9481/13848 cut-off events. [2024-06-28 01:01:11,321 INFO L125 PetriNetUnfolderBase]: For 123342/123342 co-relation queries the response was YES. [2024-06-28 01:01:11,370 INFO L83 FinitePrefix]: Finished finitePrefix Result has 69164 conditions, 13848 events. 9481/13848 cut-off events. For 123342/123342 co-relation queries the response was YES. Maximal size of possible extension queue 631. Compared 87260 event pairs, 2841 based on Foata normal form. 1/13842 useless extension candidates. Maximal degree in co-relation 69111. Up to 12945 conditions per place. [2024-06-28 01:01:11,429 INFO L140 encePairwiseOnDemand]: 46/54 looper letters, 163 selfloop transitions, 19 changer transitions 0/197 dead transitions. [2024-06-28 01:01:11,430 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 127 places, 197 transitions, 2195 flow [2024-06-28 01:01:11,430 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-06-28 01:01:11,430 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-06-28 01:01:11,430 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 170 transitions. [2024-06-28 01:01:11,431 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6296296296296297 [2024-06-28 01:01:11,431 INFO L175 Difference]: Start difference. First operand has 123 places, 155 transitions, 1540 flow. Second operand 5 states and 170 transitions. [2024-06-28 01:01:11,431 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 127 places, 197 transitions, 2195 flow [2024-06-28 01:01:11,735 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 127 places, 197 transitions, 2153 flow, removed 21 selfloop flow, removed 0 redundant places. [2024-06-28 01:01:11,738 INFO L231 Difference]: Finished difference. Result has 130 places, 172 transitions, 1779 flow [2024-06-28 01:01:11,738 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=54, PETRI_DIFFERENCE_MINUEND_FLOW=1498, PETRI_DIFFERENCE_MINUEND_PLACES=123, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=155, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=141, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=1779, PETRI_PLACES=130, PETRI_TRANSITIONS=172} [2024-06-28 01:01:11,738 INFO L281 CegarLoopForPetriNet]: 60 programPoint places, 70 predicate places. [2024-06-28 01:01:11,738 INFO L495 AbstractCegarLoop]: Abstraction has has 130 places, 172 transitions, 1779 flow [2024-06-28 01:01:11,739 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 23.0) internal successors, (115), 5 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 01:01:11,739 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:01:11,739 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 01:01:11,739 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2024-06-28 01:01:11,739 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 01:01:11,739 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:01:11,739 INFO L85 PathProgramCache]: Analyzing trace with hash -583248866, now seen corresponding path program 2 times [2024-06-28 01:01:11,740 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:01:11,740 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1668544089] [2024-06-28 01:01:11,743 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:01:11,744 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:01:11,748 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:01:11,851 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 01:01:11,852 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:01:11,852 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1668544089] [2024-06-28 01:01:11,852 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1668544089] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:01:11,852 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:01:11,852 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-06-28 01:01:11,852 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1721893674] [2024-06-28 01:01:11,852 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:01:11,853 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-06-28 01:01:11,853 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:01:11,853 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-06-28 01:01:11,853 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2024-06-28 01:01:11,870 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 20 out of 54 [2024-06-28 01:01:11,871 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 130 places, 172 transitions, 1779 flow. Second operand has 5 states, 5 states have (on average 23.0) internal successors, (115), 5 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 01:01:11,871 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:01:11,871 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 20 of 54 [2024-06-28 01:01:11,871 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:01:12,994 INFO L124 PetriNetUnfolderBase]: 9477/13849 cut-off events. [2024-06-28 01:01:12,994 INFO L125 PetriNetUnfolderBase]: For 135892/135892 co-relation queries the response was YES. [2024-06-28 01:01:13,058 INFO L83 FinitePrefix]: Finished finitePrefix Result has 71600 conditions, 13849 events. 9477/13849 cut-off events. For 135892/135892 co-relation queries the response was YES. Maximal size of possible extension queue 634. Compared 87504 event pairs, 2850 based on Foata normal form. 1/13839 useless extension candidates. Maximal degree in co-relation 71542. Up to 12941 conditions per place. [2024-06-28 01:01:13,121 INFO L140 encePairwiseOnDemand]: 46/54 looper letters, 156 selfloop transitions, 20 changer transitions 0/191 dead transitions. [2024-06-28 01:01:13,121 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 134 places, 191 transitions, 2182 flow [2024-06-28 01:01:13,121 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-06-28 01:01:13,121 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-06-28 01:01:13,122 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 163 transitions. [2024-06-28 01:01:13,122 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6037037037037037 [2024-06-28 01:01:13,122 INFO L175 Difference]: Start difference. First operand has 130 places, 172 transitions, 1779 flow. Second operand 5 states and 163 transitions. [2024-06-28 01:01:13,122 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 134 places, 191 transitions, 2182 flow [2024-06-28 01:01:13,468 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 134 places, 191 transitions, 2118 flow, removed 32 selfloop flow, removed 0 redundant places. [2024-06-28 01:01:13,470 INFO L231 Difference]: Finished difference. Result has 135 places, 173 transitions, 1771 flow [2024-06-28 01:01:13,471 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=54, PETRI_DIFFERENCE_MINUEND_FLOW=1719, PETRI_DIFFERENCE_MINUEND_PLACES=130, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=172, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=19, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=153, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=1771, PETRI_PLACES=135, PETRI_TRANSITIONS=173} [2024-06-28 01:01:13,471 INFO L281 CegarLoopForPetriNet]: 60 programPoint places, 75 predicate places. [2024-06-28 01:01:13,471 INFO L495 AbstractCegarLoop]: Abstraction has has 135 places, 173 transitions, 1771 flow [2024-06-28 01:01:13,471 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 23.0) internal successors, (115), 5 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 01:01:13,471 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:01:13,471 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:01:13,471 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2024-06-28 01:01:13,471 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 01:01:13,472 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:01:13,472 INFO L85 PathProgramCache]: Analyzing trace with hash 2137872796, now seen corresponding path program 1 times [2024-06-28 01:01:13,472 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:01:13,472 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [818168760] [2024-06-28 01:01:13,472 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:01:13,472 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:01:13,477 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:01:13,569 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 01:01:13,569 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:01:13,569 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [818168760] [2024-06-28 01:01:13,569 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [818168760] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:01:13,570 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:01:13,570 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-06-28 01:01:13,571 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [875951402] [2024-06-28 01:01:13,571 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:01:13,572 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-06-28 01:01:13,573 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:01:13,573 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-06-28 01:01:13,573 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-06-28 01:01:13,601 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 22 out of 54 [2024-06-28 01:01:13,602 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 135 places, 173 transitions, 1771 flow. Second operand has 5 states, 5 states have (on average 25.0) internal successors, (125), 5 states have internal predecessors, (125), 0 states have call successors, (0), 0 states 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 01:01:13,602 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:01:13,603 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 22 of 54 [2024-06-28 01:01:13,603 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:01:14,713 INFO L124 PetriNetUnfolderBase]: 8682/13539 cut-off events. [2024-06-28 01:01:14,714 INFO L125 PetriNetUnfolderBase]: For 142552/142691 co-relation queries the response was YES. [2024-06-28 01:01:14,777 INFO L83 FinitePrefix]: Finished finitePrefix Result has 66885 conditions, 13539 events. 8682/13539 cut-off events. For 142552/142691 co-relation queries the response was YES. Maximal size of possible extension queue 636. Compared 93538 event pairs, 3806 based on Foata normal form. 73/13357 useless extension candidates. Maximal degree in co-relation 66824. Up to 11452 conditions per place. [2024-06-28 01:01:14,837 INFO L140 encePairwiseOnDemand]: 47/54 looper letters, 133 selfloop transitions, 18 changer transitions 0/195 dead transitions. [2024-06-28 01:01:14,838 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 139 places, 195 transitions, 2143 flow [2024-06-28 01:01:14,838 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-06-28 01:01:14,838 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-06-28 01:01:14,838 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 169 transitions. [2024-06-28 01:01:14,839 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6259259259259259 [2024-06-28 01:01:14,839 INFO L175 Difference]: Start difference. First operand has 135 places, 173 transitions, 1771 flow. Second operand 5 states and 169 transitions. [2024-06-28 01:01:14,839 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 139 places, 195 transitions, 2143 flow [2024-06-28 01:01:15,185 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 138 places, 195 transitions, 2108 flow, removed 9 selfloop flow, removed 1 redundant places. [2024-06-28 01:01:15,187 INFO L231 Difference]: Finished difference. Result has 139 places, 176 transitions, 1811 flow [2024-06-28 01:01:15,187 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=54, PETRI_DIFFERENCE_MINUEND_FLOW=1736, PETRI_DIFFERENCE_MINUEND_PLACES=134, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=173, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=15, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=155, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=1811, PETRI_PLACES=139, PETRI_TRANSITIONS=176} [2024-06-28 01:01:15,188 INFO L281 CegarLoopForPetriNet]: 60 programPoint places, 79 predicate places. [2024-06-28 01:01:15,188 INFO L495 AbstractCegarLoop]: Abstraction has has 139 places, 176 transitions, 1811 flow [2024-06-28 01:01:15,188 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 25.0) internal successors, (125), 5 states have internal predecessors, (125), 0 states have call successors, (0), 0 states 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 01:01:15,188 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:01:15,188 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 01:01:15,188 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2024-06-28 01:01:15,188 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 01:01:15,188 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:01:15,189 INFO L85 PathProgramCache]: Analyzing trace with hash -1306933001, now seen corresponding path program 1 times [2024-06-28 01:01:15,189 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:01:15,189 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [119284145] [2024-06-28 01:01:15,189 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:01:15,190 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:01:15,195 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:01:15,296 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 01:01:15,296 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:01:15,296 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [119284145] [2024-06-28 01:01:15,297 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [119284145] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:01:15,297 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:01:15,297 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-06-28 01:01:15,297 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [82068483] [2024-06-28 01:01:15,297 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:01:15,297 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-06-28 01:01:15,298 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:01:15,298 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-06-28 01:01:15,298 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2024-06-28 01:01:15,338 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 21 out of 54 [2024-06-28 01:01:15,339 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 139 places, 176 transitions, 1811 flow. Second operand has 6 states, 6 states have (on average 23.666666666666668) internal successors, (142), 6 states have internal predecessors, (142), 0 states have call successors, (0), 0 states 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 01:01:15,339 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:01:15,339 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 21 of 54 [2024-06-28 01:01:15,339 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:01:16,602 INFO L124 PetriNetUnfolderBase]: 9005/13701 cut-off events. [2024-06-28 01:01:16,602 INFO L125 PetriNetUnfolderBase]: For 149743/149769 co-relation queries the response was YES. [2024-06-28 01:01:16,656 INFO L83 FinitePrefix]: Finished finitePrefix Result has 70635 conditions, 13701 events. 9005/13701 cut-off events. For 149743/149769 co-relation queries the response was YES. Maximal size of possible extension queue 635. Compared 91488 event pairs, 3887 based on Foata normal form. 16/13575 useless extension candidates. Maximal degree in co-relation 70572. Up to 12125 conditions per place. [2024-06-28 01:01:16,717 INFO L140 encePairwiseOnDemand]: 46/54 looper letters, 152 selfloop transitions, 26 changer transitions 0/205 dead transitions. [2024-06-28 01:01:16,717 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 143 places, 205 transitions, 2318 flow [2024-06-28 01:01:16,717 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-06-28 01:01:16,717 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-06-28 01:01:16,718 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 169 transitions. [2024-06-28 01:01:16,718 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6259259259259259 [2024-06-28 01:01:16,718 INFO L175 Difference]: Start difference. First operand has 139 places, 176 transitions, 1811 flow. Second operand 5 states and 169 transitions. [2024-06-28 01:01:16,718 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 143 places, 205 transitions, 2318 flow [2024-06-28 01:01:17,034 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 141 places, 205 transitions, 2277 flow, removed 9 selfloop flow, removed 2 redundant places. [2024-06-28 01:01:17,038 INFO L231 Difference]: Finished difference. Result has 144 places, 187 transitions, 1983 flow [2024-06-28 01:01:17,038 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=54, PETRI_DIFFERENCE_MINUEND_FLOW=1770, PETRI_DIFFERENCE_MINUEND_PLACES=137, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=176, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=16, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=151, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=1983, PETRI_PLACES=144, PETRI_TRANSITIONS=187} [2024-06-28 01:01:17,039 INFO L281 CegarLoopForPetriNet]: 60 programPoint places, 84 predicate places. [2024-06-28 01:01:17,039 INFO L495 AbstractCegarLoop]: Abstraction has has 144 places, 187 transitions, 1983 flow [2024-06-28 01:01:17,039 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 23.666666666666668) internal successors, (142), 6 states have internal predecessors, (142), 0 states have call successors, (0), 0 states 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 01:01:17,039 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:01:17,039 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:01:17,040 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2024-06-28 01:01:17,040 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 01:01:17,040 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:01:17,040 INFO L85 PathProgramCache]: Analyzing trace with hash 896610678, now seen corresponding path program 1 times [2024-06-28 01:01:17,040 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:01:17,040 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1346284067] [2024-06-28 01:01:17,041 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:01:17,041 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:01:17,054 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:01:17,163 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 01:01:17,164 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:01:17,164 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1346284067] [2024-06-28 01:01:17,164 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1346284067] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:01:17,164 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:01:17,164 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 01:01:17,164 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1651571784] [2024-06-28 01:01:17,165 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:01:17,165 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 01:01:17,166 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:01:17,166 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 01:01:17,166 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2024-06-28 01:01:17,205 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 21 out of 54 [2024-06-28 01:01:17,206 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 144 places, 187 transitions, 1983 flow. Second operand has 8 states, 8 states have (on average 22.875) internal successors, (183), 8 states have internal predecessors, (183), 0 states have call successors, (0), 0 states 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 01:01:17,206 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:01:17,206 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 21 of 54 [2024-06-28 01:01:17,206 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:01:18,685 INFO L124 PetriNetUnfolderBase]: 10257/15601 cut-off events. [2024-06-28 01:01:18,685 INFO L125 PetriNetUnfolderBase]: For 225226/226417 co-relation queries the response was YES. [2024-06-28 01:01:18,763 INFO L83 FinitePrefix]: Finished finitePrefix Result has 87990 conditions, 15601 events. 10257/15601 cut-off events. For 225226/226417 co-relation queries the response was YES. Maximal size of possible extension queue 777. Compared 106923 event pairs, 1758 based on Foata normal form. 190/15488 useless extension candidates. Maximal degree in co-relation 87923. Up to 8622 conditions per place. [2024-06-28 01:01:18,838 INFO L140 encePairwiseOnDemand]: 44/54 looper letters, 169 selfloop transitions, 70 changer transitions 0/261 dead transitions. [2024-06-28 01:01:18,838 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 150 places, 261 transitions, 3001 flow [2024-06-28 01:01:18,838 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 01:01:18,838 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 01:01:18,839 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 268 transitions. [2024-06-28 01:01:18,839 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.708994708994709 [2024-06-28 01:01:18,839 INFO L175 Difference]: Start difference. First operand has 144 places, 187 transitions, 1983 flow. Second operand 7 states and 268 transitions. [2024-06-28 01:01:18,839 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 150 places, 261 transitions, 3001 flow [2024-06-28 01:01:19,375 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 150 places, 261 transitions, 2959 flow, removed 21 selfloop flow, removed 0 redundant places. [2024-06-28 01:01:19,378 INFO L231 Difference]: Finished difference. Result has 152 places, 192 transitions, 2223 flow [2024-06-28 01:01:19,378 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=54, PETRI_DIFFERENCE_MINUEND_FLOW=1941, PETRI_DIFFERENCE_MINUEND_PLACES=144, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=187, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=66, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=119, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=2223, PETRI_PLACES=152, PETRI_TRANSITIONS=192} [2024-06-28 01:01:19,379 INFO L281 CegarLoopForPetriNet]: 60 programPoint places, 92 predicate places. [2024-06-28 01:01:19,379 INFO L495 AbstractCegarLoop]: Abstraction has has 152 places, 192 transitions, 2223 flow [2024-06-28 01:01:19,379 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 22.875) internal successors, (183), 8 states have internal predecessors, (183), 0 states have call successors, (0), 0 states 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 01:01:19,379 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:01:19,379 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:01:19,379 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2024-06-28 01:01:19,379 INFO L420 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 01:01:19,380 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:01:19,380 INFO L85 PathProgramCache]: Analyzing trace with hash -2102671230, now seen corresponding path program 2 times [2024-06-28 01:01:19,380 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:01:19,380 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1791286200] [2024-06-28 01:01:19,380 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:01:19,380 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:01:19,389 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:01:19,533 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 01:01:19,533 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:01:19,533 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1791286200] [2024-06-28 01:01:19,533 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1791286200] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:01:19,533 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:01:19,533 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 01:01:19,534 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1351667255] [2024-06-28 01:01:19,534 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:01:19,534 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 01:01:19,534 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:01:19,534 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 01:01:19,534 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2024-06-28 01:01:19,590 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 21 out of 54 [2024-06-28 01:01:19,590 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 152 places, 192 transitions, 2223 flow. Second operand has 8 states, 8 states have (on average 22.875) internal successors, (183), 8 states have internal predecessors, (183), 0 states have call successors, (0), 0 states 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 01:01:19,590 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:01:19,590 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 21 of 54 [2024-06-28 01:01:19,590 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:01:21,072 INFO L124 PetriNetUnfolderBase]: 10089/15195 cut-off events. [2024-06-28 01:01:21,072 INFO L125 PetriNetUnfolderBase]: For 232042/233296 co-relation queries the response was YES. [2024-06-28 01:01:21,151 INFO L83 FinitePrefix]: Finished finitePrefix Result has 89241 conditions, 15195 events. 10089/15195 cut-off events. For 232042/233296 co-relation queries the response was YES. Maximal size of possible extension queue 763. Compared 102865 event pairs, 2275 based on Foata normal form. 65/14897 useless extension candidates. Maximal degree in co-relation 89170. Up to 12759 conditions per place. [2024-06-28 01:01:21,224 INFO L140 encePairwiseOnDemand]: 46/54 looper letters, 183 selfloop transitions, 33 changer transitions 0/238 dead transitions. [2024-06-28 01:01:21,225 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 157 places, 238 transitions, 2839 flow [2024-06-28 01:01:21,225 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-28 01:01:21,225 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-28 01:01:21,226 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 217 transitions. [2024-06-28 01:01:21,226 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6697530864197531 [2024-06-28 01:01:21,226 INFO L175 Difference]: Start difference. First operand has 152 places, 192 transitions, 2223 flow. Second operand 6 states and 217 transitions. [2024-06-28 01:01:21,226 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 157 places, 238 transitions, 2839 flow [2024-06-28 01:01:21,971 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 155 places, 238 transitions, 2759 flow, removed 11 selfloop flow, removed 2 redundant places. [2024-06-28 01:01:21,974 INFO L231 Difference]: Finished difference. Result has 156 places, 192 transitions, 2215 flow [2024-06-28 01:01:21,974 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=54, PETRI_DIFFERENCE_MINUEND_FLOW=2143, PETRI_DIFFERENCE_MINUEND_PLACES=150, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=192, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=33, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=159, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=2215, PETRI_PLACES=156, PETRI_TRANSITIONS=192} [2024-06-28 01:01:21,975 INFO L281 CegarLoopForPetriNet]: 60 programPoint places, 96 predicate places. [2024-06-28 01:01:21,975 INFO L495 AbstractCegarLoop]: Abstraction has has 156 places, 192 transitions, 2215 flow [2024-06-28 01:01:21,975 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 22.875) internal successors, (183), 8 states have internal predecessors, (183), 0 states have call successors, (0), 0 states 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 01:01:21,975 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:01:21,975 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:01:21,975 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2024-06-28 01:01:21,976 INFO L420 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 01:01:21,976 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:01:21,976 INFO L85 PathProgramCache]: Analyzing trace with hash -424800740, now seen corresponding path program 3 times [2024-06-28 01:01:21,976 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:01:21,976 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1698149562] [2024-06-28 01:01:21,976 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:01:21,976 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:01:21,981 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:01:22,118 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 01:01:22,119 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:01:22,119 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1698149562] [2024-06-28 01:01:22,119 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1698149562] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:01:22,119 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:01:22,119 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 01:01:22,119 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1844152285] [2024-06-28 01:01:22,120 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:01:22,120 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 01:01:22,120 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:01:22,120 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 01:01:22,120 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2024-06-28 01:01:22,205 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 21 out of 54 [2024-06-28 01:01:22,205 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 156 places, 192 transitions, 2215 flow. Second operand has 8 states, 8 states have (on average 22.875) internal successors, (183), 8 states have internal predecessors, (183), 0 states have call successors, (0), 0 states 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 01:01:22,205 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:01:22,205 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 21 of 54 [2024-06-28 01:01:22,205 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:01:23,814 INFO L124 PetriNetUnfolderBase]: 10630/16234 cut-off events. [2024-06-28 01:01:23,814 INFO L125 PetriNetUnfolderBase]: For 264570/265932 co-relation queries the response was YES. [2024-06-28 01:01:23,903 INFO L83 FinitePrefix]: Finished finitePrefix Result has 94451 conditions, 16234 events. 10630/16234 cut-off events. For 264570/265932 co-relation queries the response was YES. Maximal size of possible extension queue 810. Compared 112929 event pairs, 3538 based on Foata normal form. 266/16041 useless extension candidates. Maximal degree in co-relation 94378. Up to 10861 conditions per place. [2024-06-28 01:01:23,983 INFO L140 encePairwiseOnDemand]: 44/54 looper letters, 161 selfloop transitions, 63 changer transitions 0/246 dead transitions. [2024-06-28 01:01:23,983 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 161 places, 246 transitions, 3008 flow [2024-06-28 01:01:23,983 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-28 01:01:23,983 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-28 01:01:23,983 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 228 transitions. [2024-06-28 01:01:23,984 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.7037037037037037 [2024-06-28 01:01:23,984 INFO L175 Difference]: Start difference. First operand has 156 places, 192 transitions, 2215 flow. Second operand 6 states and 228 transitions. [2024-06-28 01:01:23,984 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 161 places, 246 transitions, 3008 flow [2024-06-28 01:01:24,690 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 157 places, 246 transitions, 2934 flow, removed 3 selfloop flow, removed 4 redundant places. [2024-06-28 01:01:24,693 INFO L231 Difference]: Finished difference. Result has 158 places, 193 transitions, 2305 flow [2024-06-28 01:01:24,693 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=54, PETRI_DIFFERENCE_MINUEND_FLOW=2141, PETRI_DIFFERENCE_MINUEND_PLACES=152, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=192, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=62, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=130, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=2305, PETRI_PLACES=158, PETRI_TRANSITIONS=193} [2024-06-28 01:01:24,693 INFO L281 CegarLoopForPetriNet]: 60 programPoint places, 98 predicate places. [2024-06-28 01:01:24,693 INFO L495 AbstractCegarLoop]: Abstraction has has 158 places, 193 transitions, 2305 flow [2024-06-28 01:01:24,693 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 22.875) internal successors, (183), 8 states have internal predecessors, (183), 0 states have call successors, (0), 0 states 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 01:01:24,693 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:01:24,694 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:01:24,694 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2024-06-28 01:01:24,694 INFO L420 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 01:01:24,694 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:01:24,694 INFO L85 PathProgramCache]: Analyzing trace with hash 1325032766, now seen corresponding path program 4 times [2024-06-28 01:01:24,694 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:01:24,694 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [682642603] [2024-06-28 01:01:24,694 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:01:24,694 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:01:24,700 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:01:24,856 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 01:01:24,856 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:01:24,857 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [682642603] [2024-06-28 01:01:24,857 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [682642603] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:01:24,857 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:01:24,857 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 01:01:24,857 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1051157267] [2024-06-28 01:01:24,857 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:01:24,857 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 01:01:24,858 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:01:24,858 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 01:01:24,858 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2024-06-28 01:01:24,914 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 21 out of 54 [2024-06-28 01:01:24,914 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 158 places, 193 transitions, 2305 flow. Second operand has 8 states, 8 states have (on average 22.875) internal successors, (183), 8 states have internal predecessors, (183), 0 states have call successors, (0), 0 states 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 01:01:24,915 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:01:24,915 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 21 of 54 [2024-06-28 01:01:24,915 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:01:26,485 INFO L124 PetriNetUnfolderBase]: 10353/15627 cut-off events. [2024-06-28 01:01:26,485 INFO L125 PetriNetUnfolderBase]: For 257129/258569 co-relation queries the response was YES. [2024-06-28 01:01:26,574 INFO L83 FinitePrefix]: Finished finitePrefix Result has 91702 conditions, 15627 events. 10353/15627 cut-off events. For 257129/258569 co-relation queries the response was YES. Maximal size of possible extension queue 787. Compared 107035 event pairs, 3637 based on Foata normal form. 258/15434 useless extension candidates. Maximal degree in co-relation 91628. Up to 12875 conditions per place. [2024-06-28 01:01:26,649 INFO L140 encePairwiseOnDemand]: 44/54 looper letters, 158 selfloop transitions, 55 changer transitions 0/235 dead transitions. [2024-06-28 01:01:26,649 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 163 places, 235 transitions, 2899 flow [2024-06-28 01:01:26,653 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-28 01:01:26,653 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-28 01:01:26,653 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 219 transitions. [2024-06-28 01:01:26,653 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6759259259259259 [2024-06-28 01:01:26,653 INFO L175 Difference]: Start difference. First operand has 158 places, 193 transitions, 2305 flow. Second operand 6 states and 219 transitions. [2024-06-28 01:01:26,653 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 163 places, 235 transitions, 2899 flow [2024-06-28 01:01:27,364 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 158 places, 235 transitions, 2743 flow, removed 10 selfloop flow, removed 5 redundant places. [2024-06-28 01:01:27,366 INFO L231 Difference]: Finished difference. Result has 159 places, 193 transitions, 2271 flow [2024-06-28 01:01:27,367 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=54, PETRI_DIFFERENCE_MINUEND_FLOW=2149, PETRI_DIFFERENCE_MINUEND_PLACES=153, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=193, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=55, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=138, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=2271, PETRI_PLACES=159, PETRI_TRANSITIONS=193} [2024-06-28 01:01:27,367 INFO L281 CegarLoopForPetriNet]: 60 programPoint places, 99 predicate places. [2024-06-28 01:01:27,367 INFO L495 AbstractCegarLoop]: Abstraction has has 159 places, 193 transitions, 2271 flow [2024-06-28 01:01:27,367 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 22.875) internal successors, (183), 8 states have internal predecessors, (183), 0 states have call successors, (0), 0 states 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 01:01:27,367 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:01:27,368 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:01:27,368 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2024-06-28 01:01:27,368 INFO L420 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 01:01:27,368 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:01:27,368 INFO L85 PathProgramCache]: Analyzing trace with hash -1925711610, now seen corresponding path program 5 times [2024-06-28 01:01:27,368 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:01:27,368 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1121719113] [2024-06-28 01:01:27,369 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:01:27,369 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:01:27,374 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:01:27,486 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 01:01:27,487 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:01:27,487 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1121719113] [2024-06-28 01:01:27,487 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1121719113] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:01:27,487 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:01:27,487 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 01:01:27,487 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [22580970] [2024-06-28 01:01:27,487 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:01:27,488 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 01:01:27,488 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:01:27,489 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 01:01:27,489 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2024-06-28 01:01:27,528 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 21 out of 54 [2024-06-28 01:01:27,528 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 159 places, 193 transitions, 2271 flow. Second operand has 8 states, 8 states have (on average 22.875) internal successors, (183), 8 states have internal predecessors, (183), 0 states have call successors, (0), 0 states 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 01:01:27,528 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:01:27,529 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 21 of 54 [2024-06-28 01:01:27,529 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:01:29,297 INFO L124 PetriNetUnfolderBase]: 11440/17782 cut-off events. [2024-06-28 01:01:29,297 INFO L125 PetriNetUnfolderBase]: For 288248/289676 co-relation queries the response was YES. [2024-06-28 01:01:29,374 INFO L83 FinitePrefix]: Finished finitePrefix Result has 101687 conditions, 17782 events. 11440/17782 cut-off events. For 288248/289676 co-relation queries the response was YES. Maximal size of possible extension queue 902. Compared 128503 event pairs, 4413 based on Foata normal form. 272/17554 useless extension candidates. Maximal degree in co-relation 101613. Up to 13685 conditions per place. [2024-06-28 01:01:29,456 INFO L140 encePairwiseOnDemand]: 44/54 looper letters, 165 selfloop transitions, 68 changer transitions 0/255 dead transitions. [2024-06-28 01:01:29,456 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 165 places, 255 transitions, 3111 flow [2024-06-28 01:01:29,456 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 01:01:29,456 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 01:01:29,457 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 259 transitions. [2024-06-28 01:01:29,457 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6851851851851852 [2024-06-28 01:01:29,457 INFO L175 Difference]: Start difference. First operand has 159 places, 193 transitions, 2271 flow. Second operand 7 states and 259 transitions. [2024-06-28 01:01:29,457 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 165 places, 255 transitions, 3111 flow [2024-06-28 01:01:30,200 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 159 places, 255 transitions, 2968 flow, removed 6 selfloop flow, removed 6 redundant places. [2024-06-28 01:01:30,203 INFO L231 Difference]: Finished difference. Result has 160 places, 195 transitions, 2332 flow [2024-06-28 01:01:30,203 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=54, PETRI_DIFFERENCE_MINUEND_FLOW=2132, PETRI_DIFFERENCE_MINUEND_PLACES=153, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=193, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=67, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=126, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=2332, PETRI_PLACES=160, PETRI_TRANSITIONS=195} [2024-06-28 01:01:30,204 INFO L281 CegarLoopForPetriNet]: 60 programPoint places, 100 predicate places. [2024-06-28 01:01:30,204 INFO L495 AbstractCegarLoop]: Abstraction has has 160 places, 195 transitions, 2332 flow [2024-06-28 01:01:30,204 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 22.875) internal successors, (183), 8 states have internal predecessors, (183), 0 states have call successors, (0), 0 states 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 01:01:30,204 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:01:30,205 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:01:30,205 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2024-06-28 01:01:30,205 INFO L420 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 01:01:30,205 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:01:30,205 INFO L85 PathProgramCache]: Analyzing trace with hash -1918093050, now seen corresponding path program 6 times [2024-06-28 01:01:30,205 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:01:30,205 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [408977457] [2024-06-28 01:01:30,206 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:01:30,206 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:01:30,214 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:01:30,337 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 01:01:30,337 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:01:30,337 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [408977457] [2024-06-28 01:01:30,338 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [408977457] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:01:30,338 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:01:30,338 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 01:01:30,338 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1135174184] [2024-06-28 01:01:30,338 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:01:30,338 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 01:01:30,338 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:01:30,339 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 01:01:30,339 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2024-06-28 01:01:30,380 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 21 out of 54 [2024-06-28 01:01:30,380 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 160 places, 195 transitions, 2332 flow. Second operand has 8 states, 8 states have (on average 22.875) internal successors, (183), 8 states have internal predecessors, (183), 0 states have call successors, (0), 0 states 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 01:01:30,380 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:01:30,380 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 21 of 54 [2024-06-28 01:01:30,380 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:01:32,099 INFO L124 PetriNetUnfolderBase]: 11993/18273 cut-off events. [2024-06-28 01:01:32,099 INFO L125 PetriNetUnfolderBase]: For 305035/306456 co-relation queries the response was YES. [2024-06-28 01:01:32,205 INFO L83 FinitePrefix]: Finished finitePrefix Result has 106388 conditions, 18273 events. 11993/18273 cut-off events. For 305035/306456 co-relation queries the response was YES. Maximal size of possible extension queue 945. Compared 129305 event pairs, 4007 based on Foata normal form. 221/18049 useless extension candidates. Maximal degree in co-relation 106314. Up to 15411 conditions per place. [2024-06-28 01:01:32,297 INFO L140 encePairwiseOnDemand]: 44/54 looper letters, 157 selfloop transitions, 66 changer transitions 0/245 dead transitions. [2024-06-28 01:01:32,297 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 166 places, 245 transitions, 2974 flow [2024-06-28 01:01:32,298 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 01:01:32,298 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 01:01:32,298 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 250 transitions. [2024-06-28 01:01:32,298 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6613756613756614 [2024-06-28 01:01:32,298 INFO L175 Difference]: Start difference. First operand has 160 places, 195 transitions, 2332 flow. Second operand 7 states and 250 transitions. [2024-06-28 01:01:32,298 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 166 places, 245 transitions, 2974 flow [2024-06-28 01:01:33,078 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 163 places, 245 transitions, 2872 flow, removed 13 selfloop flow, removed 3 redundant places. [2024-06-28 01:01:33,084 INFO L231 Difference]: Finished difference. Result has 164 places, 196 transitions, 2402 flow [2024-06-28 01:01:33,085 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=54, PETRI_DIFFERENCE_MINUEND_FLOW=2236, PETRI_DIFFERENCE_MINUEND_PLACES=157, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=195, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=65, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=129, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=2402, PETRI_PLACES=164, PETRI_TRANSITIONS=196} [2024-06-28 01:01:33,085 INFO L281 CegarLoopForPetriNet]: 60 programPoint places, 104 predicate places. [2024-06-28 01:01:33,086 INFO L495 AbstractCegarLoop]: Abstraction has has 164 places, 196 transitions, 2402 flow [2024-06-28 01:01:33,086 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 22.875) internal successors, (183), 8 states have internal predecessors, (183), 0 states have call successors, (0), 0 states 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 01:01:33,086 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:01:33,086 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:01:33,086 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2024-06-28 01:01:33,086 INFO L420 AbstractCegarLoop]: === Iteration 31 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 01:01:33,087 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:01:33,087 INFO L85 PathProgramCache]: Analyzing trace with hash -1659805080, now seen corresponding path program 7 times [2024-06-28 01:01:33,087 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:01:33,087 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1817352798] [2024-06-28 01:01:33,087 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:01:33,087 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:01:33,093 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:01:33,202 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 01:01:33,202 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:01:33,202 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1817352798] [2024-06-28 01:01:33,202 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1817352798] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:01:33,202 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:01:33,202 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 01:01:33,203 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1888723285] [2024-06-28 01:01:33,203 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:01:33,203 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 01:01:33,203 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:01:33,203 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 01:01:33,204 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2024-06-28 01:01:33,258 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 21 out of 54 [2024-06-28 01:01:33,259 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 164 places, 196 transitions, 2402 flow. Second operand has 8 states, 8 states have (on average 22.875) internal successors, (183), 8 states have internal predecessors, (183), 0 states have call successors, (0), 0 states 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 01:01:33,259 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:01:33,259 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 21 of 54 [2024-06-28 01:01:33,259 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:01:36,060 INFO L124 PetriNetUnfolderBase]: 12391/18569 cut-off events. [2024-06-28 01:01:36,060 INFO L125 PetriNetUnfolderBase]: For 305941/307474 co-relation queries the response was YES. [2024-06-28 01:01:36,157 INFO L83 FinitePrefix]: Finished finitePrefix Result has 109207 conditions, 18569 events. 12391/18569 cut-off events. For 305941/307474 co-relation queries the response was YES. Maximal size of possible extension queue 992. Compared 130189 event pairs, 3802 based on Foata normal form. 216/18322 useless extension candidates. Maximal degree in co-relation 109131. Up to 16052 conditions per place. [2024-06-28 01:01:36,260 INFO L140 encePairwiseOnDemand]: 44/54 looper letters, 155 selfloop transitions, 67 changer transitions 0/244 dead transitions. [2024-06-28 01:01:36,260 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 170 places, 244 transitions, 3042 flow [2024-06-28 01:01:36,260 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 01:01:36,260 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 01:01:36,261 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 248 transitions. [2024-06-28 01:01:36,261 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.656084656084656 [2024-06-28 01:01:36,261 INFO L175 Difference]: Start difference. First operand has 164 places, 196 transitions, 2402 flow. Second operand 7 states and 248 transitions. [2024-06-28 01:01:36,261 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 170 places, 244 transitions, 3042 flow [2024-06-28 01:01:36,971 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 165 places, 244 transitions, 2906 flow, removed 4 selfloop flow, removed 5 redundant places. [2024-06-28 01:01:36,973 INFO L231 Difference]: Finished difference. Result has 166 places, 197 transitions, 2436 flow [2024-06-28 01:01:36,974 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=54, PETRI_DIFFERENCE_MINUEND_FLOW=2266, PETRI_DIFFERENCE_MINUEND_PLACES=159, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=196, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=66, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=129, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=2436, PETRI_PLACES=166, PETRI_TRANSITIONS=197} [2024-06-28 01:01:36,974 INFO L281 CegarLoopForPetriNet]: 60 programPoint places, 106 predicate places. [2024-06-28 01:01:36,974 INFO L495 AbstractCegarLoop]: Abstraction has has 166 places, 197 transitions, 2436 flow [2024-06-28 01:01:36,974 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 22.875) internal successors, (183), 8 states have internal predecessors, (183), 0 states have call successors, (0), 0 states 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 01:01:36,974 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:01:36,974 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:01:36,974 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30 [2024-06-28 01:01:36,974 INFO L420 AbstractCegarLoop]: === Iteration 32 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 01:01:36,975 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:01:36,975 INFO L85 PathProgramCache]: Analyzing trace with hash -1770343438, now seen corresponding path program 8 times [2024-06-28 01:01:36,975 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:01:36,975 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [377253189] [2024-06-28 01:01:36,975 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:01:36,975 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:01:36,980 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:01:37,189 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 01:01:37,190 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:01:37,190 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [377253189] [2024-06-28 01:01:37,190 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [377253189] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:01:37,190 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:01:37,190 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 01:01:37,190 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1584125124] [2024-06-28 01:01:37,190 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:01:37,190 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 01:01:37,190 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:01:37,191 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 01:01:37,191 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2024-06-28 01:01:37,241 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 21 out of 54 [2024-06-28 01:01:37,241 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 166 places, 197 transitions, 2436 flow. Second operand has 8 states, 8 states have (on average 22.875) internal successors, (183), 8 states have internal predecessors, (183), 0 states have call successors, (0), 0 states 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 01:01:37,241 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:01:37,241 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 21 of 54 [2024-06-28 01:01:37,241 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:01:39,396 INFO L124 PetriNetUnfolderBase]: 12356/18657 cut-off events. [2024-06-28 01:01:39,396 INFO L125 PetriNetUnfolderBase]: For 306446/308002 co-relation queries the response was YES. [2024-06-28 01:01:39,472 INFO L83 FinitePrefix]: Finished finitePrefix Result has 107762 conditions, 18657 events. 12356/18657 cut-off events. For 306446/308002 co-relation queries the response was YES. Maximal size of possible extension queue 976. Compared 131545 event pairs, 4020 based on Foata normal form. 145/18308 useless extension candidates. Maximal degree in co-relation 107685. Up to 15781 conditions per place. [2024-06-28 01:01:39,555 INFO L140 encePairwiseOnDemand]: 44/54 looper letters, 166 selfloop transitions, 55 changer transitions 0/243 dead transitions. [2024-06-28 01:01:39,556 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 171 places, 243 transitions, 3038 flow [2024-06-28 01:01:39,556 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-28 01:01:39,556 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-28 01:01:39,556 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 223 transitions. [2024-06-28 01:01:39,557 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6882716049382716 [2024-06-28 01:01:39,557 INFO L175 Difference]: Start difference. First operand has 166 places, 197 transitions, 2436 flow. Second operand 6 states and 223 transitions. [2024-06-28 01:01:39,557 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 171 places, 243 transitions, 3038 flow [2024-06-28 01:01:40,186 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 166 places, 243 transitions, 2892 flow, removed 8 selfloop flow, removed 5 redundant places. [2024-06-28 01:01:40,189 INFO L231 Difference]: Finished difference. Result has 167 places, 197 transitions, 2412 flow [2024-06-28 01:01:40,189 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=54, PETRI_DIFFERENCE_MINUEND_FLOW=2290, PETRI_DIFFERENCE_MINUEND_PLACES=161, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=197, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=55, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=142, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=2412, PETRI_PLACES=167, PETRI_TRANSITIONS=197} [2024-06-28 01:01:40,190 INFO L281 CegarLoopForPetriNet]: 60 programPoint places, 107 predicate places. [2024-06-28 01:01:40,190 INFO L495 AbstractCegarLoop]: Abstraction has has 167 places, 197 transitions, 2412 flow [2024-06-28 01:01:40,190 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 22.875) internal successors, (183), 8 states have internal predecessors, (183), 0 states have call successors, (0), 0 states 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 01:01:40,190 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:01:40,190 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:01:40,190 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31 [2024-06-28 01:01:40,190 INFO L420 AbstractCegarLoop]: === Iteration 33 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 01:01:40,190 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:01:40,190 INFO L85 PathProgramCache]: Analyzing trace with hash -1748455160, now seen corresponding path program 1 times [2024-06-28 01:01:40,190 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:01:40,191 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1813471503] [2024-06-28 01:01:40,191 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:01:40,191 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:01:40,195 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:01:40,409 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 01:01:40,410 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:01:40,410 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1813471503] [2024-06-28 01:01:40,410 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1813471503] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:01:40,410 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:01:40,410 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 01:01:40,410 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2131556459] [2024-06-28 01:01:40,410 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:01:40,411 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 01:01:40,411 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:01:40,411 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 01:01:40,411 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2024-06-28 01:01:40,479 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 21 out of 54 [2024-06-28 01:01:40,479 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 167 places, 197 transitions, 2412 flow. Second operand has 8 states, 8 states have (on average 22.875) internal successors, (183), 8 states have internal predecessors, (183), 0 states have call successors, (0), 0 states 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 01:01:40,479 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:01:40,479 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 21 of 54 [2024-06-28 01:01:40,479 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:01:42,687 INFO L124 PetriNetUnfolderBase]: 12990/19494 cut-off events. [2024-06-28 01:01:42,687 INFO L125 PetriNetUnfolderBase]: For 326205/327869 co-relation queries the response was YES. [2024-06-28 01:01:42,909 INFO L83 FinitePrefix]: Finished finitePrefix Result has 113715 conditions, 19494 events. 12990/19494 cut-off events. For 326205/327869 co-relation queries the response was YES. Maximal size of possible extension queue 1043. Compared 137426 event pairs, 3364 based on Foata normal form. 228/19277 useless extension candidates. Maximal degree in co-relation 113637. Up to 10330 conditions per place. [2024-06-28 01:01:42,995 INFO L140 encePairwiseOnDemand]: 44/54 looper letters, 161 selfloop transitions, 82 changer transitions 0/265 dead transitions. [2024-06-28 01:01:42,995 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 173 places, 265 transitions, 3338 flow [2024-06-28 01:01:42,996 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 01:01:42,996 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 01:01:42,996 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 263 transitions. [2024-06-28 01:01:42,996 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6957671957671958 [2024-06-28 01:01:42,996 INFO L175 Difference]: Start difference. First operand has 167 places, 197 transitions, 2412 flow. Second operand 7 states and 263 transitions. [2024-06-28 01:01:42,996 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 173 places, 265 transitions, 3338 flow [2024-06-28 01:01:43,711 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 168 places, 265 transitions, 3216 flow, removed 2 selfloop flow, removed 5 redundant places. [2024-06-28 01:01:43,714 INFO L231 Difference]: Finished difference. Result has 169 places, 199 transitions, 2522 flow [2024-06-28 01:01:43,714 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=54, PETRI_DIFFERENCE_MINUEND_FLOW=2290, PETRI_DIFFERENCE_MINUEND_PLACES=162, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=197, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=81, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=116, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=2522, PETRI_PLACES=169, PETRI_TRANSITIONS=199} [2024-06-28 01:01:43,714 INFO L281 CegarLoopForPetriNet]: 60 programPoint places, 109 predicate places. [2024-06-28 01:01:43,714 INFO L495 AbstractCegarLoop]: Abstraction has has 169 places, 199 transitions, 2522 flow [2024-06-28 01:01:43,715 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 22.875) internal successors, (183), 8 states have internal predecessors, (183), 0 states have call successors, (0), 0 states 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 01:01:43,715 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:01:43,715 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:01:43,715 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32 [2024-06-28 01:01:43,715 INFO L420 AbstractCegarLoop]: === Iteration 34 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 01:01:43,715 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:01:43,715 INFO L85 PathProgramCache]: Analyzing trace with hash -1748186390, now seen corresponding path program 2 times [2024-06-28 01:01:43,715 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:01:43,715 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [432236862] [2024-06-28 01:01:43,715 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:01:43,716 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:01:43,721 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:01:43,827 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 01:01:43,827 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:01:43,827 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [432236862] [2024-06-28 01:01:43,827 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [432236862] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:01:43,827 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:01:43,827 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 01:01:43,828 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [621681352] [2024-06-28 01:01:43,828 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:01:43,828 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 01:01:43,828 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:01:43,828 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 01:01:43,828 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2024-06-28 01:01:43,901 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 21 out of 54 [2024-06-28 01:01:43,902 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 169 places, 199 transitions, 2522 flow. Second operand has 8 states, 8 states have (on average 22.875) internal successors, (183), 8 states have internal predecessors, (183), 0 states have call successors, (0), 0 states 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 01:01:43,902 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:01:43,902 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 21 of 54 [2024-06-28 01:01:43,902 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:01:46,449 INFO L124 PetriNetUnfolderBase]: 13286/19964 cut-off events. [2024-06-28 01:01:46,449 INFO L125 PetriNetUnfolderBase]: For 351883/353545 co-relation queries the response was YES. [2024-06-28 01:01:46,536 INFO L83 FinitePrefix]: Finished finitePrefix Result has 118142 conditions, 19964 events. 13286/19964 cut-off events. For 351883/353545 co-relation queries the response was YES. Maximal size of possible extension queue 1072. Compared 141657 event pairs, 3309 based on Foata normal form. 224/19715 useless extension candidates. Maximal degree in co-relation 118063. Up to 10400 conditions per place. [2024-06-28 01:01:46,625 INFO L140 encePairwiseOnDemand]: 44/54 looper letters, 159 selfloop transitions, 83 changer transitions 0/264 dead transitions. [2024-06-28 01:01:46,625 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 175 places, 264 transitions, 3426 flow [2024-06-28 01:01:46,625 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 01:01:46,625 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 01:01:46,626 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 261 transitions. [2024-06-28 01:01:46,626 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6904761904761905 [2024-06-28 01:01:46,626 INFO L175 Difference]: Start difference. First operand has 169 places, 199 transitions, 2522 flow. Second operand 7 states and 261 transitions. [2024-06-28 01:01:46,626 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 175 places, 264 transitions, 3426 flow [2024-06-28 01:01:47,315 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 171 places, 264 transitions, 3234 flow, removed 17 selfloop flow, removed 4 redundant places. [2024-06-28 01:01:47,317 INFO L231 Difference]: Finished difference. Result has 172 places, 200 transitions, 2534 flow [2024-06-28 01:01:47,318 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=54, PETRI_DIFFERENCE_MINUEND_FLOW=2338, PETRI_DIFFERENCE_MINUEND_PLACES=165, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=199, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=82, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=117, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=2534, PETRI_PLACES=172, PETRI_TRANSITIONS=200} [2024-06-28 01:01:47,318 INFO L281 CegarLoopForPetriNet]: 60 programPoint places, 112 predicate places. [2024-06-28 01:01:47,318 INFO L495 AbstractCegarLoop]: Abstraction has has 172 places, 200 transitions, 2534 flow [2024-06-28 01:01:47,318 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 22.875) internal successors, (183), 8 states have internal predecessors, (183), 0 states have call successors, (0), 0 states 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 01:01:47,318 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:01:47,319 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:01:47,319 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33 [2024-06-28 01:01:47,319 INFO L420 AbstractCegarLoop]: === Iteration 35 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 01:01:47,319 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:01:47,319 INFO L85 PathProgramCache]: Analyzing trace with hash -870229516, now seen corresponding path program 3 times [2024-06-28 01:01:47,319 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:01:47,319 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1995253973] [2024-06-28 01:01:47,320 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:01:47,320 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:01:47,324 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:01:47,423 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 01:01:47,424 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:01:47,424 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1995253973] [2024-06-28 01:01:47,424 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1995253973] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:01:47,424 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:01:47,424 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 01:01:47,424 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2105978640] [2024-06-28 01:01:47,425 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:01:47,425 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 01:01:47,425 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:01:47,425 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 01:01:47,425 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2024-06-28 01:01:47,467 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 21 out of 54 [2024-06-28 01:01:47,468 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 172 places, 200 transitions, 2534 flow. Second operand has 8 states, 8 states have (on average 22.875) internal successors, (183), 8 states have internal predecessors, (183), 0 states have call successors, (0), 0 states 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 01:01:47,468 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:01:47,468 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 21 of 54 [2024-06-28 01:01:47,468 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:01:50,078 INFO L124 PetriNetUnfolderBase]: 13686/21306 cut-off events. [2024-06-28 01:01:50,079 INFO L125 PetriNetUnfolderBase]: For 371669/373182 co-relation queries the response was YES. [2024-06-28 01:01:50,181 INFO L83 FinitePrefix]: Finished finitePrefix Result has 122501 conditions, 21306 events. 13686/21306 cut-off events. For 371669/373182 co-relation queries the response was YES. Maximal size of possible extension queue 1121. Compared 159309 event pairs, 5470 based on Foata normal form. 230/20891 useless extension candidates. Maximal degree in co-relation 122421. Up to 15755 conditions per place. [2024-06-28 01:01:50,274 INFO L140 encePairwiseOnDemand]: 44/54 looper letters, 162 selfloop transitions, 71 changer transitions 0/255 dead transitions. [2024-06-28 01:01:50,274 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 178 places, 255 transitions, 3260 flow [2024-06-28 01:01:50,274 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 01:01:50,274 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 01:01:50,275 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 253 transitions. [2024-06-28 01:01:50,275 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6693121693121693 [2024-06-28 01:01:50,275 INFO L175 Difference]: Start difference. First operand has 172 places, 200 transitions, 2534 flow. Second operand 7 states and 253 transitions. [2024-06-28 01:01:50,275 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 178 places, 255 transitions, 3260 flow [2024-06-28 01:01:51,306 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 174 places, 255 transitions, 3128 flow, removed 4 selfloop flow, removed 4 redundant places. [2024-06-28 01:01:51,309 INFO L231 Difference]: Finished difference. Result has 175 places, 201 transitions, 2578 flow [2024-06-28 01:01:51,309 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=54, PETRI_DIFFERENCE_MINUEND_FLOW=2403, PETRI_DIFFERENCE_MINUEND_PLACES=168, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=200, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=70, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=129, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=2578, PETRI_PLACES=175, PETRI_TRANSITIONS=201} [2024-06-28 01:01:51,310 INFO L281 CegarLoopForPetriNet]: 60 programPoint places, 115 predicate places. [2024-06-28 01:01:51,310 INFO L495 AbstractCegarLoop]: Abstraction has has 175 places, 201 transitions, 2578 flow [2024-06-28 01:01:51,310 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 22.875) internal successors, (183), 8 states have internal predecessors, (183), 0 states have call successors, (0), 0 states 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 01:01:51,310 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:01:51,310 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:01:51,310 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable34 [2024-06-28 01:01:51,310 INFO L420 AbstractCegarLoop]: === Iteration 36 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 01:01:51,310 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:01:51,311 INFO L85 PathProgramCache]: Analyzing trace with hash -1770158988, now seen corresponding path program 4 times [2024-06-28 01:01:51,311 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:01:51,311 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1126125561] [2024-06-28 01:01:51,311 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:01:51,311 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:01:51,315 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:01:51,427 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 01:01:51,428 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:01:51,428 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1126125561] [2024-06-28 01:01:51,428 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1126125561] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:01:51,428 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:01:51,428 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 01:01:51,428 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [847981492] [2024-06-28 01:01:51,428 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:01:51,428 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 01:01:51,428 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:01:51,429 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 01:01:51,429 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2024-06-28 01:01:51,513 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 21 out of 54 [2024-06-28 01:01:51,514 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 175 places, 201 transitions, 2578 flow. Second operand has 8 states, 8 states have (on average 22.875) internal successors, (183), 8 states have internal predecessors, (183), 0 states have call successors, (0), 0 states 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 01:01:51,514 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:01:51,514 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 21 of 54 [2024-06-28 01:01:51,514 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:01:54,271 INFO L124 PetriNetUnfolderBase]: 13791/21291 cut-off events. [2024-06-28 01:01:54,272 INFO L125 PetriNetUnfolderBase]: For 368577/369998 co-relation queries the response was YES. [2024-06-28 01:01:54,372 INFO L83 FinitePrefix]: Finished finitePrefix Result has 120950 conditions, 21291 events. 13791/21291 cut-off events. For 368577/369998 co-relation queries the response was YES. Maximal size of possible extension queue 1108. Compared 156577 event pairs, 4675 based on Foata normal form. 135/20771 useless extension candidates. Maximal degree in co-relation 120869. Up to 15729 conditions per place. [2024-06-28 01:01:54,466 INFO L140 encePairwiseOnDemand]: 44/54 looper letters, 168 selfloop transitions, 64 changer transitions 0/254 dead transitions. [2024-06-28 01:01:54,467 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 180 places, 254 transitions, 3266 flow [2024-06-28 01:01:54,467 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-28 01:01:54,467 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-28 01:01:54,467 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 228 transitions. [2024-06-28 01:01:54,468 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.7037037037037037 [2024-06-28 01:01:54,468 INFO L175 Difference]: Start difference. First operand has 175 places, 201 transitions, 2578 flow. Second operand 6 states and 228 transitions. [2024-06-28 01:01:54,468 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 180 places, 254 transitions, 3266 flow [2024-06-28 01:01:55,440 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 175 places, 254 transitions, 3112 flow, removed 7 selfloop flow, removed 5 redundant places. [2024-06-28 01:01:55,443 INFO L231 Difference]: Finished difference. Result has 176 places, 201 transitions, 2561 flow [2024-06-28 01:01:55,443 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=54, PETRI_DIFFERENCE_MINUEND_FLOW=2424, PETRI_DIFFERENCE_MINUEND_PLACES=170, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=201, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=64, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=137, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=2561, PETRI_PLACES=176, PETRI_TRANSITIONS=201} [2024-06-28 01:01:55,444 INFO L281 CegarLoopForPetriNet]: 60 programPoint places, 116 predicate places. [2024-06-28 01:01:55,444 INFO L495 AbstractCegarLoop]: Abstraction has has 176 places, 201 transitions, 2561 flow [2024-06-28 01:01:55,444 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 22.875) internal successors, (183), 8 states have internal predecessors, (183), 0 states have call successors, (0), 0 states 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 01:01:55,444 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:01:55,445 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:01:55,445 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable35 [2024-06-28 01:01:55,445 INFO L420 AbstractCegarLoop]: === Iteration 37 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 01:01:55,445 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:01:55,445 INFO L85 PathProgramCache]: Analyzing trace with hash 1769884059, now seen corresponding path program 1 times [2024-06-28 01:01:55,445 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:01:55,445 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1293196812] [2024-06-28 01:01:55,445 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:01:55,446 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:01:55,450 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:01:55,536 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 01:01:55,536 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:01:55,536 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1293196812] [2024-06-28 01:01:55,537 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1293196812] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:01:55,537 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:01:55,537 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-06-28 01:01:55,537 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1304350406] [2024-06-28 01:01:55,537 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:01:55,538 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-06-28 01:01:55,538 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:01:55,539 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-06-28 01:01:55,539 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2024-06-28 01:01:55,563 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 20 out of 54 [2024-06-28 01:01:55,563 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 176 places, 201 transitions, 2561 flow. Second operand has 6 states, 6 states have (on average 22.666666666666668) internal successors, (136), 6 states have internal predecessors, (136), 0 states have call successors, (0), 0 states 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 01:01:55,563 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:01:55,563 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 20 of 54 [2024-06-28 01:01:55,564 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:01:58,364 INFO L124 PetriNetUnfolderBase]: 15183/22365 cut-off events. [2024-06-28 01:01:58,364 INFO L125 PetriNetUnfolderBase]: For 329157/329166 co-relation queries the response was YES. [2024-06-28 01:01:58,472 INFO L83 FinitePrefix]: Finished finitePrefix Result has 126366 conditions, 22365 events. 15183/22365 cut-off events. For 329157/329166 co-relation queries the response was YES. Maximal size of possible extension queue 1124. Compared 155934 event pairs, 5234 based on Foata normal form. 7/22363 useless extension candidates. Maximal degree in co-relation 126284. Up to 20951 conditions per place. [2024-06-28 01:01:58,567 INFO L140 encePairwiseOnDemand]: 45/54 looper letters, 190 selfloop transitions, 39 changer transitions 0/244 dead transitions. [2024-06-28 01:01:58,567 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 182 places, 244 transitions, 3317 flow [2024-06-28 01:01:58,567 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 01:01:58,567 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 01:01:58,567 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 227 transitions. [2024-06-28 01:01:58,568 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6005291005291006 [2024-06-28 01:01:58,568 INFO L175 Difference]: Start difference. First operand has 176 places, 201 transitions, 2561 flow. Second operand 7 states and 227 transitions. [2024-06-28 01:01:58,568 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 182 places, 244 transitions, 3317 flow [2024-06-28 01:01:59,468 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 176 places, 244 transitions, 3141 flow, removed 1 selfloop flow, removed 6 redundant places. [2024-06-28 01:01:59,470 INFO L231 Difference]: Finished difference. Result has 178 places, 213 transitions, 2659 flow [2024-06-28 01:01:59,471 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=54, PETRI_DIFFERENCE_MINUEND_FLOW=2385, PETRI_DIFFERENCE_MINUEND_PLACES=170, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=201, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=31, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=168, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=2659, PETRI_PLACES=178, PETRI_TRANSITIONS=213} [2024-06-28 01:01:59,471 INFO L281 CegarLoopForPetriNet]: 60 programPoint places, 118 predicate places. [2024-06-28 01:01:59,471 INFO L495 AbstractCegarLoop]: Abstraction has has 178 places, 213 transitions, 2659 flow [2024-06-28 01:01:59,471 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 22.666666666666668) internal successors, (136), 6 states have internal predecessors, (136), 0 states have call successors, (0), 0 states 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 01:01:59,471 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:01:59,471 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:01:59,471 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable36 [2024-06-28 01:01:59,471 INFO L420 AbstractCegarLoop]: === Iteration 38 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 01:01:59,472 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:01:59,472 INFO L85 PathProgramCache]: Analyzing trace with hash 1780359579, now seen corresponding path program 2 times [2024-06-28 01:01:59,472 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:01:59,472 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1228200574] [2024-06-28 01:01:59,472 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:01:59,472 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:01:59,476 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:01:59,559 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 01:01:59,560 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:01:59,560 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1228200574] [2024-06-28 01:01:59,560 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1228200574] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:01:59,560 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:01:59,560 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-06-28 01:01:59,560 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2136710103] [2024-06-28 01:01:59,560 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:01:59,561 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-06-28 01:01:59,562 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:01:59,562 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-06-28 01:01:59,562 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2024-06-28 01:01:59,584 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 20 out of 54 [2024-06-28 01:01:59,584 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 178 places, 213 transitions, 2659 flow. Second operand has 6 states, 6 states have (on average 22.666666666666668) internal successors, (136), 6 states have internal predecessors, (136), 0 states have call successors, (0), 0 states 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 01:01:59,584 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:01:59,585 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 20 of 54 [2024-06-28 01:01:59,585 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:02:02,414 INFO L124 PetriNetUnfolderBase]: 15179/22460 cut-off events. [2024-06-28 01:02:02,415 INFO L125 PetriNetUnfolderBase]: For 335487/335511 co-relation queries the response was YES. [2024-06-28 01:02:02,555 INFO L83 FinitePrefix]: Finished finitePrefix Result has 127534 conditions, 22460 events. 15179/22460 cut-off events. For 335487/335511 co-relation queries the response was YES. Maximal size of possible extension queue 1127. Compared 157442 event pairs, 7014 based on Foata normal form. 17/22400 useless extension candidates. Maximal degree in co-relation 127450. Up to 20947 conditions per place. [2024-06-28 01:02:02,667 INFO L140 encePairwiseOnDemand]: 45/54 looper letters, 179 selfloop transitions, 37 changer transitions 0/231 dead transitions. [2024-06-28 01:02:02,667 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 182 places, 231 transitions, 3133 flow [2024-06-28 01:02:02,668 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-06-28 01:02:02,668 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-06-28 01:02:02,668 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 166 transitions. [2024-06-28 01:02:02,668 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6148148148148148 [2024-06-28 01:02:02,668 INFO L175 Difference]: Start difference. First operand has 178 places, 213 transitions, 2659 flow. Second operand 5 states and 166 transitions. [2024-06-28 01:02:02,668 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 182 places, 231 transitions, 3133 flow