./Ultimate.py --spec ../../../trunk/examples/svcomp/properties/unreach-call.prp --file ../../../trunk/examples/svcomp/pthread-wmm/mix009.oepc.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/mix009.oepc.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/mix009.oepc.i ./goblint.2024-06-19_11-23-25.files/mutex-meet-nonrel/mix009.oepc.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 01:21:28,848 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-06-28 01:21:28,927 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-06-28 01:21:28,934 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-06-28 01:21:28,935 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-06-28 01:21:28,959 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-06-28 01:21:28,959 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-06-28 01:21:28,959 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-06-28 01:21:28,960 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-06-28 01:21:28,963 INFO L153 SettingsManager]: * Use memory slicer=true [2024-06-28 01:21:28,963 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-06-28 01:21:28,963 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-06-28 01:21:28,964 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-06-28 01:21:28,965 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-06-28 01:21:28,965 INFO L153 SettingsManager]: * Use SBE=true [2024-06-28 01:21:28,966 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-06-28 01:21:28,966 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-06-28 01:21:28,966 INFO L153 SettingsManager]: * sizeof long=4 [2024-06-28 01:21:28,966 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-06-28 01:21:28,966 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-06-28 01:21:28,967 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-06-28 01:21:28,967 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-06-28 01:21:28,967 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-06-28 01:21:28,967 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-06-28 01:21:28,968 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-06-28 01:21:28,968 INFO L153 SettingsManager]: * sizeof long double=12 [2024-06-28 01:21:28,968 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-06-28 01:21:28,968 INFO L153 SettingsManager]: * Use constant arrays=true [2024-06-28 01:21:28,969 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-06-28 01:21:28,969 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-06-28 01:21:28,970 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-06-28 01:21:28,970 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-06-28 01:21:28,970 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-06-28 01:21:28,970 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-06-28 01:21:28,970 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-06-28 01:21:28,970 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-06-28 01:21:28,971 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-06-28 01:21:28,971 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-06-28 01:21:28,971 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-06-28 01:21:28,971 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-06-28 01:21:28,971 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2024-06-28 01:21:28,971 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-06-28 01:21:28,972 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-06-28 01:21:28,972 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessparser: Only consider loop invariants -> false [2024-06-28 01:21:29,183 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-06-28 01:21:29,200 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-06-28 01:21:29,202 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-06-28 01:21:29,203 INFO L270 PluginConnector]: Initializing CDTParser... [2024-06-28 01:21:29,204 INFO L274 PluginConnector]: CDTParser initialized [2024-06-28 01:21:29,205 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-wmm/mix009.oepc.i [2024-06-28 01:21:30,176 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-06-28 01:21:30,430 INFO L384 CDTParser]: Found 1 translation units. [2024-06-28 01:21:30,431 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/mix009.oepc.i [2024-06-28 01:21:30,448 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/2c955bb6f/3d70f150967243e6b037d7a644344c41/FLAG8eba46466 [2024-06-28 01:21:30,459 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/2c955bb6f/3d70f150967243e6b037d7a644344c41 [2024-06-28 01:21:30,461 INFO L270 PluginConnector]: Initializing Witness Parser... [2024-06-28 01:21:30,462 INFO L274 PluginConnector]: Witness Parser initialized [2024-06-28 01:21:30,462 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/./goblint.2024-06-19_11-23-25.files/mutex-meet-nonrel/mix009.oepc.yml/witness.yml [2024-06-28 01:21:30,549 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-06-28 01:21:30,551 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2024-06-28 01:21:30,551 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-06-28 01:21:30,552 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-06-28 01:21:30,555 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-06-28 01:21:30,556 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.06 01:21:30" (1/2) ... [2024-06-28 01:21:30,557 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@374506dc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.06 01:21:30, skipping insertion in model container [2024-06-28 01:21:30,576 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.06 01:21:30" (1/2) ... [2024-06-28 01:21:30,578 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@640beb1f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.06 01:21:30, skipping insertion in model container [2024-06-28 01:21:30,578 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 28.06 01:21:30" (2/2) ... [2024-06-28 01:21:30,578 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@374506dc and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 28.06 01:21:30, skipping insertion in model container [2024-06-28 01:21:30,578 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 28.06 01:21:30" (2/2) ... [2024-06-28 01:21:30,579 INFO L83 nessWitnessExtractor]: Extracting all invariants from correctness witness [2024-06-28 01:21:30,644 INFO L95 edCorrectnessWitness]: Found the following entries in the witness: [2024-06-28 01:21:30,645 INFO L97 edCorrectnessWitness]: Location invariant before [L826-L826] (((((((((((((((((! multithreaded || z$r_buff0_thd2 == (_Bool)0) && (! multithreaded || z$r_buff0_thd0 == (_Bool)0)) && (! multithreaded || z$read_delayed == (_Bool)0)) && (! multithreaded || (z$mem_tmp == 0 || z$mem_tmp == 1))) && (! multithreaded || (z == 0 || z == 1))) && (! multithreaded || (((((((((((((((((0 <= __unbuffered_cnt && z$flush_delayed == (_Bool)0) && z$r_buff0_thd0 == (_Bool)0) && z$r_buff0_thd2 == (_Bool)0) && z$r_buff1_thd0 == (_Bool)0) && z$r_buff1_thd2 == (_Bool)0) && z$read_delayed == (_Bool)0) && z$read_delayed_var == 0) && (__unbuffered_p0_EAX == 0 || __unbuffered_p0_EAX == 1)) && (__unbuffered_p0_EBX == 0 || __unbuffered_p0_EBX == 1)) && (__unbuffered_p1_EAX == 0 || __unbuffered_p1_EAX == 1)) && (__unbuffered_p1_EBX == 0 || __unbuffered_p1_EBX == 1)) && (x == 0 || x == 1)) && (y == 0 || y == 1)) && (z == 0 || z == 1)) && (z$mem_tmp == 0 || z$mem_tmp == 1)) && (z$w_buff0 == 0 || z$w_buff0 == 1)) && (z$w_buff1 == 0 || z$w_buff1 == 1)))) && (! multithreaded || z$r_buff1_thd0 == (_Bool)0)) && (! multithreaded || (y == 0 || y == 1))) && (! multithreaded || (z$w_buff0 == 0 || z$w_buff0 == 1))) && (! multithreaded || (__unbuffered_p0_EBX == 0 || __unbuffered_p0_EBX == 1))) && (! multithreaded || (z$w_buff1 == 0 || z$w_buff1 == 1))) && (! multithreaded || z$r_buff1_thd2 == (_Bool)0)) && (! multithreaded || (__unbuffered_p1_EBX == 0 || __unbuffered_p1_EBX == 1))) && (! multithreaded || (__unbuffered_p1_EAX == 0 || __unbuffered_p1_EAX == 1))) && (! multithreaded || (__unbuffered_p0_EAX == 0 || __unbuffered_p0_EAX == 1))) && (! multithreaded || (x == 0 || x == 1))) && (! multithreaded || z$read_delayed_var == 0)) && (! multithreaded || 0 <= __unbuffered_cnt) [2024-06-28 01:21:30,645 INFO L97 edCorrectnessWitness]: Location invariant before [L825-L825] (((((((((((((((((! multithreaded || z$r_buff0_thd2 == (_Bool)0) && (! multithreaded || z$r_buff0_thd0 == (_Bool)0)) && (! multithreaded || z$read_delayed == (_Bool)0)) && (! multithreaded || (z$mem_tmp == 0 || z$mem_tmp == 1))) && (! multithreaded || (z == 0 || z == 1))) && (! multithreaded || (((((((((((((((((0 <= __unbuffered_cnt && z$flush_delayed == (_Bool)0) && z$r_buff0_thd0 == (_Bool)0) && z$r_buff0_thd2 == (_Bool)0) && z$r_buff1_thd0 == (_Bool)0) && z$r_buff1_thd2 == (_Bool)0) && z$read_delayed == (_Bool)0) && z$read_delayed_var == 0) && (__unbuffered_p0_EAX == 0 || __unbuffered_p0_EAX == 1)) && (__unbuffered_p0_EBX == 0 || __unbuffered_p0_EBX == 1)) && (__unbuffered_p1_EAX == 0 || __unbuffered_p1_EAX == 1)) && (__unbuffered_p1_EBX == 0 || __unbuffered_p1_EBX == 1)) && (x == 0 || x == 1)) && (y == 0 || y == 1)) && (z == 0 || z == 1)) && (z$mem_tmp == 0 || z$mem_tmp == 1)) && (z$w_buff0 == 0 || z$w_buff0 == 1)) && (z$w_buff1 == 0 || z$w_buff1 == 1)))) && (! multithreaded || z$r_buff1_thd0 == (_Bool)0)) && (! multithreaded || (y == 0 || y == 1))) && (! multithreaded || (z$w_buff0 == 0 || z$w_buff0 == 1))) && (! multithreaded || (__unbuffered_p0_EBX == 0 || __unbuffered_p0_EBX == 1))) && (! multithreaded || (z$w_buff1 == 0 || z$w_buff1 == 1))) && (! multithreaded || z$r_buff1_thd2 == (_Bool)0)) && (! multithreaded || (__unbuffered_p1_EBX == 0 || __unbuffered_p1_EBX == 1))) && (! multithreaded || (__unbuffered_p1_EAX == 0 || __unbuffered_p1_EAX == 1))) && (! multithreaded || (__unbuffered_p0_EAX == 0 || __unbuffered_p0_EAX == 1))) && (! multithreaded || (x == 0 || x == 1))) && (! multithreaded || z$read_delayed_var == 0)) && (! multithreaded || 0 <= __unbuffered_cnt) [2024-06-28 01:21:30,646 INFO L103 edCorrectnessWitness]: ghost_variable multithreaded = 0 [2024-06-28 01:21:30,646 INFO L106 edCorrectnessWitness]: ghost_update [L823-L823] multithreaded = 1; [2024-06-28 01:21:30,683 INFO L177 MainTranslator]: Built tables and reachable declarations [2024-06-28 01:21:30,807 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/mix009.oepc.i[945,958] [2024-06-28 01:21:30,939 INFO L207 PostProcessor]: Analyzing one entry point: main [2024-06-28 01:21:30,950 INFO L202 MainTranslator]: Completed pre-run Start Parsing Local [2024-06-28 01:21:30,975 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/mix009.oepc.i[945,958] Start Parsing Local Start Parsing Local Start Parsing Local [2024-06-28 01:21:31,038 INFO L207 PostProcessor]: Analyzing one entry point: main [2024-06-28 01:21:31,063 INFO L206 MainTranslator]: Completed translation [2024-06-28 01:21:31,063 INFO L201 PluginConnector]: Adding new model witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 28.06 01:21:31 WrapperNode [2024-06-28 01:21:31,064 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-06-28 01:21:31,065 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-06-28 01:21:31,065 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-06-28 01:21:31,065 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-06-28 01:21:31,070 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 28.06 01:21:31" (1/1) ... [2024-06-28 01:21:31,080 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 28.06 01:21:31" (1/1) ... [2024-06-28 01:21:31,100 INFO L138 Inliner]: procedures = 174, calls = 39, calls flagged for inlining = 5, calls inlined = 5, statements flattened = 118 [2024-06-28 01:21:31,101 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-06-28 01:21:31,101 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-06-28 01:21:31,102 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-06-28 01:21:31,102 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-06-28 01:21:31,110 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 28.06 01:21:31" (1/1) ... [2024-06-28 01:21:31,110 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 28.06 01:21:31" (1/1) ... [2024-06-28 01:21:31,112 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 28.06 01:21:31" (1/1) ... [2024-06-28 01:21:31,130 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 01:21:31,130 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 28.06 01:21:31" (1/1) ... [2024-06-28 01:21:31,131 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 28.06 01:21:31" (1/1) ... [2024-06-28 01:21:31,137 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 28.06 01:21:31" (1/1) ... [2024-06-28 01:21:31,146 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 28.06 01:21:31" (1/1) ... [2024-06-28 01:21:31,147 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 28.06 01:21:31" (1/1) ... [2024-06-28 01:21:31,148 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 28.06 01:21:31" (1/1) ... [2024-06-28 01:21:31,150 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-06-28 01:21:31,151 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-06-28 01:21:31,151 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-06-28 01:21:31,151 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-06-28 01:21:31,152 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 28.06 01:21:31" (1/1) ... [2024-06-28 01:21:31,156 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-06-28 01:21:31,174 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-06-28 01:21:31,186 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 01:21:31,191 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 01:21:31,215 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2024-06-28 01:21:31,216 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-06-28 01:21:31,216 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2024-06-28 01:21:31,216 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2024-06-28 01:21:31,217 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2024-06-28 01:21:31,217 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2024-06-28 01:21:31,217 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-06-28 01:21:31,217 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2024-06-28 01:21:31,217 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-06-28 01:21:31,218 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-06-28 01:21:31,219 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 01:21:31,339 INFO L244 CfgBuilder]: Building ICFG [2024-06-28 01:21:31,340 INFO L270 CfgBuilder]: Building CFG for each procedure with an implementation [2024-06-28 01:21:31,599 INFO L289 CfgBuilder]: Ommited future-live optimization because the input is a concurrent program. [2024-06-28 01:21:31,600 INFO L293 CfgBuilder]: Performing block encoding [2024-06-28 01:21:31,712 INFO L315 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-06-28 01:21:31,712 INFO L320 CfgBuilder]: Removed 0 assume(true) statements. [2024-06-28 01:21:31,713 INFO L201 PluginConnector]: Adding new model witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.06 01:21:31 BoogieIcfgContainer [2024-06-28 01:21:31,713 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-06-28 01:21:31,715 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-06-28 01:21:31,715 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-06-28 01:21:31,717 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-06-28 01:21:31,718 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.06 01:21:30" (1/4) ... [2024-06-28 01:21:31,728 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3b5109d8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.06 01:21:31, skipping insertion in model container [2024-06-28 01:21:31,728 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 28.06 01:21:30" (2/4) ... [2024-06-28 01:21:31,728 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3b5109d8 and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CORRECTNESS_WITNESS 28.06 01:21:31, skipping insertion in model container [2024-06-28 01:21:31,728 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 28.06 01:21:31" (3/4) ... [2024-06-28 01:21:31,728 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3b5109d8 and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CORRECTNESS_WITNESS 28.06 01:21:31, skipping insertion in model container [2024-06-28 01:21:31,729 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.06 01:21:31" (4/4) ... [2024-06-28 01:21:31,730 INFO L112 eAbstractionObserver]: Analyzing ICFG mix009.oepc.i [2024-06-28 01:21:31,742 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-06-28 01:21:31,743 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 4 error locations. [2024-06-28 01:21:31,743 INFO L522 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-06-28 01:21:31,777 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2024-06-28 01:21:31,803 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 44 places, 38 transitions, 84 flow [2024-06-28 01:21:31,830 INFO L124 PetriNetUnfolderBase]: 1/36 cut-off events. [2024-06-28 01:21:31,830 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-06-28 01:21:31,833 INFO L83 FinitePrefix]: Finished finitePrefix Result has 43 conditions, 36 events. 1/36 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 57 event pairs, 0 based on Foata normal form. 0/31 useless extension candidates. Maximal degree in co-relation 35. Up to 2 conditions per place. [2024-06-28 01:21:31,833 INFO L82 GeneralOperation]: Start removeDead. Operand has 44 places, 38 transitions, 84 flow [2024-06-28 01:21:31,836 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 42 places, 36 transitions, 78 flow [2024-06-28 01:21:31,843 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-06-28 01:21:31,856 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;@45bcb598, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-06-28 01:21:31,857 INFO L358 AbstractCegarLoop]: Starting to check reachability of 7 error locations. [2024-06-28 01:21:31,860 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-06-28 01:21:31,861 INFO L124 PetriNetUnfolderBase]: 0/5 cut-off events. [2024-06-28 01:21:31,861 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-06-28 01:21:31,861 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:21:31,862 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2024-06-28 01:21:31,862 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:21:31,882 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:21:31,882 INFO L85 PathProgramCache]: Analyzing trace with hash 319772151, now seen corresponding path program 1 times [2024-06-28 01:21:31,889 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:21:31,889 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [589697797] [2024-06-28 01:21:31,890 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:21:31,890 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:21:32,044 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:21:32,690 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 01:21:32,690 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:21:32,691 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [589697797] [2024-06-28 01:21:32,692 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [589697797] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:21:32,692 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:21:32,692 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-06-28 01:21:32,694 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1585619864] [2024-06-28 01:21:32,694 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:21:32,701 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-06-28 01:21:32,706 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:21:32,730 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-06-28 01:21:32,731 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-06-28 01:21:32,762 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 38 [2024-06-28 01:21:32,764 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 42 places, 36 transitions, 78 flow. Second operand has 3 states, 3 states have (on average 15.333333333333334) internal successors, (46), 3 states have internal predecessors, (46), 0 states have call successors, (0), 0 states 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 01:21:32,765 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:21:32,765 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 38 [2024-06-28 01:21:32,766 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:21:32,990 INFO L124 PetriNetUnfolderBase]: 475/853 cut-off events. [2024-06-28 01:21:32,991 INFO L125 PetriNetUnfolderBase]: For 7/7 co-relation queries the response was YES. [2024-06-28 01:21:32,994 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1669 conditions, 853 events. 475/853 cut-off events. For 7/7 co-relation queries the response was YES. Maximal size of possible extension queue 55. Compared 4447 event pairs, 182 based on Foata normal form. 43/833 useless extension candidates. Maximal degree in co-relation 1658. Up to 787 conditions per place. [2024-06-28 01:21:33,000 INFO L140 encePairwiseOnDemand]: 31/38 looper letters, 30 selfloop transitions, 4 changer transitions 0/46 dead transitions. [2024-06-28 01:21:33,000 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 44 places, 46 transitions, 169 flow [2024-06-28 01:21:33,001 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-06-28 01:21:33,003 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-06-28 01:21:33,008 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 80 transitions. [2024-06-28 01:21:33,010 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.7017543859649122 [2024-06-28 01:21:33,011 INFO L175 Difference]: Start difference. First operand has 42 places, 36 transitions, 78 flow. Second operand 3 states and 80 transitions. [2024-06-28 01:21:33,012 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 44 places, 46 transitions, 169 flow [2024-06-28 01:21:33,014 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 42 places, 46 transitions, 166 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-06-28 01:21:33,017 INFO L231 Difference]: Finished difference. Result has 43 places, 38 transitions, 102 flow [2024-06-28 01:21:33,019 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=74, PETRI_DIFFERENCE_MINUEND_PLACES=40, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=35, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=31, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=102, PETRI_PLACES=43, PETRI_TRANSITIONS=38} [2024-06-28 01:21:33,021 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 1 predicate places. [2024-06-28 01:21:33,022 INFO L495 AbstractCegarLoop]: Abstraction has has 43 places, 38 transitions, 102 flow [2024-06-28 01:21:33,022 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 15.333333333333334) internal successors, (46), 3 states have internal predecessors, (46), 0 states have call successors, (0), 0 states 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 01:21:33,022 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:21:33,022 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2024-06-28 01:21:33,022 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-06-28 01:21:33,023 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting P0Err0ASSERT_VIOLATIONERROR_FUNCTION === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:21:33,024 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:21:33,024 INFO L85 PathProgramCache]: Analyzing trace with hash 319772997, now seen corresponding path program 1 times [2024-06-28 01:21:33,024 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:21:33,024 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [666282167] [2024-06-28 01:21:33,024 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:21:33,025 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:21:33,047 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:21:33,108 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 01:21:33,109 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:21:33,109 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [666282167] [2024-06-28 01:21:33,109 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [666282167] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:21:33,110 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:21:33,110 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-06-28 01:21:33,110 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1762802453] [2024-06-28 01:21:33,110 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:21:33,111 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-06-28 01:21:33,112 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:21:33,112 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-06-28 01:21:33,112 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-06-28 01:21:33,113 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 20 out of 38 [2024-06-28 01:21:33,113 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 43 places, 38 transitions, 102 flow. Second operand has 3 states, 3 states have (on average 21.0) internal successors, (63), 3 states have internal predecessors, (63), 0 states have call successors, (0), 0 states 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 01:21:33,113 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:21:33,114 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 20 of 38 [2024-06-28 01:21:33,114 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:21:33,198 INFO L124 PetriNetUnfolderBase]: 169/421 cut-off events. [2024-06-28 01:21:33,199 INFO L125 PetriNetUnfolderBase]: For 37/37 co-relation queries the response was YES. [2024-06-28 01:21:33,200 INFO L83 FinitePrefix]: Finished finitePrefix Result has 790 conditions, 421 events. 169/421 cut-off events. For 37/37 co-relation queries the response was YES. Maximal size of possible extension queue 36. Compared 2288 event pairs, 96 based on Foata normal form. 0/402 useless extension candidates. Maximal degree in co-relation 778. Up to 256 conditions per place. [2024-06-28 01:21:33,202 INFO L140 encePairwiseOnDemand]: 35/38 looper letters, 23 selfloop transitions, 3 changer transitions 2/47 dead transitions. [2024-06-28 01:21:33,202 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 44 places, 47 transitions, 173 flow [2024-06-28 01:21:33,202 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-06-28 01:21:33,202 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-06-28 01:21:33,203 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 88 transitions. [2024-06-28 01:21:33,204 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.7719298245614035 [2024-06-28 01:21:33,204 INFO L175 Difference]: Start difference. First operand has 43 places, 38 transitions, 102 flow. Second operand 3 states and 88 transitions. [2024-06-28 01:21:33,204 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 44 places, 47 transitions, 173 flow [2024-06-28 01:21:33,205 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 43 places, 47 transitions, 170 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-06-28 01:21:33,207 INFO L231 Difference]: Finished difference. Result has 43 places, 35 transitions, 94 flow [2024-06-28 01:21:33,207 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=90, PETRI_DIFFERENCE_MINUEND_PLACES=41, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=36, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=33, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=94, PETRI_PLACES=43, PETRI_TRANSITIONS=35} [2024-06-28 01:21:33,207 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 1 predicate places. [2024-06-28 01:21:33,208 INFO L495 AbstractCegarLoop]: Abstraction has has 43 places, 35 transitions, 94 flow [2024-06-28 01:21:33,208 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 21.0) internal successors, (63), 3 states have internal predecessors, (63), 0 states have call successors, (0), 0 states 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 01:21:33,208 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:21:33,208 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:21:33,209 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-06-28 01:21:33,209 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:21:33,212 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:21:33,213 INFO L85 PathProgramCache]: Analyzing trace with hash -1936590603, now seen corresponding path program 1 times [2024-06-28 01:21:33,213 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:21:33,214 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [307159656] [2024-06-28 01:21:33,221 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:21:33,221 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:21:33,268 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:21:33,678 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:21:33,678 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:21:33,679 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [307159656] [2024-06-28 01:21:33,679 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [307159656] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:21:33,679 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:21:33,679 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-06-28 01:21:33,679 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2119723682] [2024-06-28 01:21:33,679 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:21:33,680 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-06-28 01:21:33,680 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:21:33,680 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-06-28 01:21:33,680 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-06-28 01:21:33,707 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 38 [2024-06-28 01:21:33,708 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 43 places, 35 transitions, 94 flow. Second operand has 4 states, 4 states have (on average 15.25) internal successors, (61), 4 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:21:33,708 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:21:33,709 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 38 [2024-06-28 01:21:33,709 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:21:33,826 INFO L124 PetriNetUnfolderBase]: 342/711 cut-off events. [2024-06-28 01:21:33,826 INFO L125 PetriNetUnfolderBase]: For 168/168 co-relation queries the response was YES. [2024-06-28 01:21:33,827 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1462 conditions, 711 events. 342/711 cut-off events. For 168/168 co-relation queries the response was YES. Maximal size of possible extension queue 49. Compared 3864 event pairs, 160 based on Foata normal form. 2/675 useless extension candidates. Maximal degree in co-relation 1449. Up to 562 conditions per place. [2024-06-28 01:21:33,831 INFO L140 encePairwiseOnDemand]: 31/38 looper letters, 34 selfloop transitions, 6 changer transitions 0/52 dead transitions. [2024-06-28 01:21:33,831 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 45 places, 52 transitions, 220 flow [2024-06-28 01:21:33,831 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-06-28 01:21:33,831 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-06-28 01:21:33,834 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 96 transitions. [2024-06-28 01:21:33,835 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.631578947368421 [2024-06-28 01:21:33,836 INFO L175 Difference]: Start difference. First operand has 43 places, 35 transitions, 94 flow. Second operand 4 states and 96 transitions. [2024-06-28 01:21:33,836 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 45 places, 52 transitions, 220 flow [2024-06-28 01:21:33,837 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 43 places, 52 transitions, 212 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-06-28 01:21:33,838 INFO L231 Difference]: Finished difference. Result has 45 places, 40 transitions, 137 flow [2024-06-28 01:21:33,838 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=88, PETRI_DIFFERENCE_MINUEND_PLACES=40, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=35, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=29, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=137, PETRI_PLACES=45, PETRI_TRANSITIONS=40} [2024-06-28 01:21:33,839 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 3 predicate places. [2024-06-28 01:21:33,839 INFO L495 AbstractCegarLoop]: Abstraction has has 45 places, 40 transitions, 137 flow [2024-06-28 01:21:33,839 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 15.25) internal successors, (61), 4 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:21:33,839 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:21:33,840 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:21:33,840 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-06-28 01:21:33,840 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:21:33,841 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:21:33,841 INFO L85 PathProgramCache]: Analyzing trace with hash 95234092, now seen corresponding path program 1 times [2024-06-28 01:21:33,841 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:21:33,844 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1254420879] [2024-06-28 01:21:33,844 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:21:33,844 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:21:33,855 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:21:34,264 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 01:21:34,265 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:21:34,265 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1254420879] [2024-06-28 01:21:34,265 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1254420879] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:21:34,265 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:21:34,265 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-06-28 01:21:34,266 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [712732161] [2024-06-28 01:21:34,266 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:21:34,266 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-06-28 01:21:34,266 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:21:34,267 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-06-28 01:21:34,267 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-06-28 01:21:34,316 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 38 [2024-06-28 01:21:34,316 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 45 places, 40 transitions, 137 flow. Second operand has 5 states, 5 states have (on average 14.2) internal successors, (71), 5 states have internal predecessors, (71), 0 states have call successors, (0), 0 states 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 01:21:34,316 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:21:34,316 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 38 [2024-06-28 01:21:34,317 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:21:34,472 INFO L124 PetriNetUnfolderBase]: 406/849 cut-off events. [2024-06-28 01:21:34,472 INFO L125 PetriNetUnfolderBase]: For 339/339 co-relation queries the response was YES. [2024-06-28 01:21:34,474 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1881 conditions, 849 events. 406/849 cut-off events. For 339/339 co-relation queries the response was YES. Maximal size of possible extension queue 54. Compared 4706 event pairs, 235 based on Foata normal form. 2/815 useless extension candidates. Maximal degree in co-relation 1866. Up to 651 conditions per place. [2024-06-28 01:21:34,476 INFO L140 encePairwiseOnDemand]: 30/38 looper letters, 42 selfloop transitions, 8 changer transitions 0/61 dead transitions. [2024-06-28 01:21:34,477 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 49 places, 61 transitions, 293 flow [2024-06-28 01:21:34,477 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-06-28 01:21:34,477 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-06-28 01:21:34,478 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 115 transitions. [2024-06-28 01:21:34,478 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6052631578947368 [2024-06-28 01:21:34,478 INFO L175 Difference]: Start difference. First operand has 45 places, 40 transitions, 137 flow. Second operand 5 states and 115 transitions. [2024-06-28 01:21:34,478 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 49 places, 61 transitions, 293 flow [2024-06-28 01:21:34,481 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 48 places, 61 transitions, 286 flow, removed 1 selfloop flow, removed 1 redundant places. [2024-06-28 01:21:34,482 INFO L231 Difference]: Finished difference. Result has 49 places, 42 transitions, 165 flow [2024-06-28 01:21:34,482 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=130, PETRI_DIFFERENCE_MINUEND_PLACES=44, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=40, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=32, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=165, PETRI_PLACES=49, PETRI_TRANSITIONS=42} [2024-06-28 01:21:34,483 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 7 predicate places. [2024-06-28 01:21:34,484 INFO L495 AbstractCegarLoop]: Abstraction has has 49 places, 42 transitions, 165 flow [2024-06-28 01:21:34,484 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 14.2) internal successors, (71), 5 states have internal predecessors, (71), 0 states have call successors, (0), 0 states 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 01:21:34,484 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:21:34,484 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:21:34,484 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-06-28 01:21:34,484 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:21:34,485 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:21:34,485 INFO L85 PathProgramCache]: Analyzing trace with hash -1342709772, now seen corresponding path program 1 times [2024-06-28 01:21:34,485 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:21:34,485 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [543059307] [2024-06-28 01:21:34,485 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:21:34,485 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:21:34,495 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:21:34,960 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 01:21:34,960 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:21:34,960 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [543059307] [2024-06-28 01:21:34,961 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [543059307] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:21:34,961 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:21:34,961 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-06-28 01:21:34,961 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2033963943] [2024-06-28 01:21:34,961 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:21:34,962 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-06-28 01:21:34,962 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:21:34,962 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-06-28 01:21:34,963 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2024-06-28 01:21:35,014 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 38 [2024-06-28 01:21:35,014 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 49 places, 42 transitions, 165 flow. Second operand has 6 states, 6 states have (on average 14.166666666666666) internal successors, (85), 6 states have internal predecessors, (85), 0 states have call successors, (0), 0 states 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 01:21:35,014 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:21:35,014 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 38 [2024-06-28 01:21:35,014 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:21:35,173 INFO L124 PetriNetUnfolderBase]: 406/834 cut-off events. [2024-06-28 01:21:35,173 INFO L125 PetriNetUnfolderBase]: For 583/583 co-relation queries the response was YES. [2024-06-28 01:21:35,175 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1995 conditions, 834 events. 406/834 cut-off events. For 583/583 co-relation queries the response was YES. Maximal size of possible extension queue 56. Compared 4537 event pairs, 139 based on Foata normal form. 2/801 useless extension candidates. Maximal degree in co-relation 1978. Up to 636 conditions per place. [2024-06-28 01:21:35,177 INFO L140 encePairwiseOnDemand]: 29/38 looper letters, 49 selfloop transitions, 10 changer transitions 0/70 dead transitions. [2024-06-28 01:21:35,178 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 54 places, 70 transitions, 359 flow [2024-06-28 01:21:35,178 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-28 01:21:35,178 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-28 01:21:35,179 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 137 transitions. [2024-06-28 01:21:35,179 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6008771929824561 [2024-06-28 01:21:35,179 INFO L175 Difference]: Start difference. First operand has 49 places, 42 transitions, 165 flow. Second operand 6 states and 137 transitions. [2024-06-28 01:21:35,179 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 54 places, 70 transitions, 359 flow [2024-06-28 01:21:35,181 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 51 places, 70 transitions, 342 flow, removed 2 selfloop flow, removed 3 redundant places. [2024-06-28 01:21:35,181 INFO L231 Difference]: Finished difference. Result has 52 places, 44 transitions, 189 flow [2024-06-28 01:21:35,182 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=148, PETRI_DIFFERENCE_MINUEND_PLACES=46, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=42, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=32, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=189, PETRI_PLACES=52, PETRI_TRANSITIONS=44} [2024-06-28 01:21:35,182 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 10 predicate places. [2024-06-28 01:21:35,182 INFO L495 AbstractCegarLoop]: Abstraction has has 52 places, 44 transitions, 189 flow [2024-06-28 01:21:35,183 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 14.166666666666666) internal successors, (85), 6 states have internal predecessors, (85), 0 states have call successors, (0), 0 states 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 01:21:35,183 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:21:35,183 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:21:35,183 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-06-28 01:21:35,183 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:21:35,183 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:21:35,184 INFO L85 PathProgramCache]: Analyzing trace with hash 1139281081, now seen corresponding path program 1 times [2024-06-28 01:21:35,184 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:21:35,184 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1821826819] [2024-06-28 01:21:35,184 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:21:35,184 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:21:35,191 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:21:35,619 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 01:21:35,619 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:21:35,619 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1821826819] [2024-06-28 01:21:35,619 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1821826819] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:21:35,620 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:21:35,620 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-06-28 01:21:35,620 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2000774013] [2024-06-28 01:21:35,620 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:21:35,620 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-06-28 01:21:35,621 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:21:35,621 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-06-28 01:21:35,621 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2024-06-28 01:21:35,672 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 38 [2024-06-28 01:21:35,672 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 52 places, 44 transitions, 189 flow. Second operand has 6 states, 6 states have (on average 11.5) internal successors, (69), 6 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:21:35,672 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:21:35,673 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 38 [2024-06-28 01:21:35,673 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:21:35,928 INFO L124 PetriNetUnfolderBase]: 603/1215 cut-off events. [2024-06-28 01:21:35,929 INFO L125 PetriNetUnfolderBase]: For 1112/1114 co-relation queries the response was YES. [2024-06-28 01:21:35,931 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2963 conditions, 1215 events. 603/1215 cut-off events. For 1112/1114 co-relation queries the response was YES. Maximal size of possible extension queue 68. Compared 6833 event pairs, 274 based on Foata normal form. 3/1169 useless extension candidates. Maximal degree in co-relation 2944. Up to 987 conditions per place. [2024-06-28 01:21:35,935 INFO L140 encePairwiseOnDemand]: 32/38 looper letters, 41 selfloop transitions, 8 changer transitions 0/58 dead transitions. [2024-06-28 01:21:35,935 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 56 places, 58 transitions, 321 flow [2024-06-28 01:21:35,936 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-06-28 01:21:35,936 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-06-28 01:21:35,936 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 93 transitions. [2024-06-28 01:21:35,936 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.48947368421052634 [2024-06-28 01:21:35,936 INFO L175 Difference]: Start difference. First operand has 52 places, 44 transitions, 189 flow. Second operand 5 states and 93 transitions. [2024-06-28 01:21:35,937 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 56 places, 58 transitions, 321 flow [2024-06-28 01:21:35,938 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 52 places, 58 transitions, 298 flow, removed 3 selfloop flow, removed 4 redundant places. [2024-06-28 01:21:35,939 INFO L231 Difference]: Finished difference. Result has 53 places, 46 transitions, 198 flow [2024-06-28 01:21:35,939 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=166, PETRI_DIFFERENCE_MINUEND_PLACES=48, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=44, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=36, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=198, PETRI_PLACES=53, PETRI_TRANSITIONS=46} [2024-06-28 01:21:35,939 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 11 predicate places. [2024-06-28 01:21:35,940 INFO L495 AbstractCegarLoop]: Abstraction has has 53 places, 46 transitions, 198 flow [2024-06-28 01:21:35,940 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 11.5) internal successors, (69), 6 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:21:35,940 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:21:35,940 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:21:35,940 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-06-28 01:21:35,940 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:21:35,941 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:21:35,941 INFO L85 PathProgramCache]: Analyzing trace with hash -1853879565, now seen corresponding path program 1 times [2024-06-28 01:21:35,941 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:21:35,941 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1423599804] [2024-06-28 01:21:35,941 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:21:35,941 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:21:35,949 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:21:36,715 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 01:21:36,715 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:21:36,715 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1423599804] [2024-06-28 01:21:36,716 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1423599804] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:21:36,716 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:21:36,716 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 01:21:36,716 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [22416956] [2024-06-28 01:21:36,716 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:21:36,716 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 01:21:36,717 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:21:36,717 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 01:21:36,717 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2024-06-28 01:21:36,794 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 38 [2024-06-28 01:21:36,794 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 53 places, 46 transitions, 198 flow. Second operand has 8 states, 8 states have (on average 13.125) internal successors, (105), 8 states have internal predecessors, (105), 0 states have call successors, (0), 0 states 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 01:21:36,794 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:21:36,794 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 38 [2024-06-28 01:21:36,795 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:21:37,042 INFO L124 PetriNetUnfolderBase]: 484/875 cut-off events. [2024-06-28 01:21:37,042 INFO L125 PetriNetUnfolderBase]: For 1237/1237 co-relation queries the response was YES. [2024-06-28 01:21:37,043 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2435 conditions, 875 events. 484/875 cut-off events. For 1237/1237 co-relation queries the response was YES. Maximal size of possible extension queue 60. Compared 4447 event pairs, 81 based on Foata normal form. 2/869 useless extension candidates. Maximal degree in co-relation 2415. Up to 706 conditions per place. [2024-06-28 01:21:37,047 INFO L140 encePairwiseOnDemand]: 28/38 looper letters, 65 selfloop transitions, 22 changer transitions 0/98 dead transitions. [2024-06-28 01:21:37,047 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 60 places, 98 transitions, 546 flow [2024-06-28 01:21:37,048 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 01:21:37,048 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 01:21:37,048 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 175 transitions. [2024-06-28 01:21:37,049 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5756578947368421 [2024-06-28 01:21:37,049 INFO L175 Difference]: Start difference. First operand has 53 places, 46 transitions, 198 flow. Second operand 8 states and 175 transitions. [2024-06-28 01:21:37,049 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 60 places, 98 transitions, 546 flow [2024-06-28 01:21:37,051 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 57 places, 98 transitions, 532 flow, removed 1 selfloop flow, removed 3 redundant places. [2024-06-28 01:21:37,052 INFO L231 Difference]: Finished difference. Result has 62 places, 57 transitions, 340 flow [2024-06-28 01:21:37,052 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=184, PETRI_DIFFERENCE_MINUEND_PLACES=50, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=46, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=29, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=340, PETRI_PLACES=62, PETRI_TRANSITIONS=57} [2024-06-28 01:21:37,052 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 20 predicate places. [2024-06-28 01:21:37,053 INFO L495 AbstractCegarLoop]: Abstraction has has 62 places, 57 transitions, 340 flow [2024-06-28 01:21:37,053 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 13.125) internal successors, (105), 8 states have internal predecessors, (105), 0 states have call successors, (0), 0 states 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 01:21:37,053 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:21:37,053 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:21:37,053 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-06-28 01:21:37,053 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:21:37,054 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:21:37,054 INFO L85 PathProgramCache]: Analyzing trace with hash 957976362, now seen corresponding path program 1 times [2024-06-28 01:21:37,054 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:21:37,054 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1306651641] [2024-06-28 01:21:37,054 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:21:37,054 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:21:37,061 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:21:37,529 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 01:21:37,530 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:21:37,530 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1306651641] [2024-06-28 01:21:37,530 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1306651641] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:21:37,530 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:21:37,530 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-28 01:21:37,530 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1345492722] [2024-06-28 01:21:37,531 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:21:37,531 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-28 01:21:37,531 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:21:37,531 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-28 01:21:37,531 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2024-06-28 01:21:37,595 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 38 [2024-06-28 01:21:37,595 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 62 places, 57 transitions, 340 flow. Second operand has 7 states, 7 states have (on average 11.428571428571429) internal successors, (80), 7 states have internal predecessors, (80), 0 states have call successors, (0), 0 states 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 01:21:37,595 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:21:37,595 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 38 [2024-06-28 01:21:37,595 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:21:37,912 INFO L124 PetriNetUnfolderBase]: 593/1108 cut-off events. [2024-06-28 01:21:37,912 INFO L125 PetriNetUnfolderBase]: For 1952/1958 co-relation queries the response was YES. [2024-06-28 01:21:37,914 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3298 conditions, 1108 events. 593/1108 cut-off events. For 1952/1958 co-relation queries the response was YES. Maximal size of possible extension queue 67. Compared 5872 event pairs, 178 based on Foata normal form. 9/1091 useless extension candidates. Maximal degree in co-relation 3273. Up to 940 conditions per place. [2024-06-28 01:21:37,918 INFO L140 encePairwiseOnDemand]: 31/38 looper letters, 58 selfloop transitions, 10 changer transitions 0/78 dead transitions. [2024-06-28 01:21:37,918 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 67 places, 78 transitions, 528 flow [2024-06-28 01:21:37,919 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-28 01:21:37,919 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-28 01:21:37,919 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 112 transitions. [2024-06-28 01:21:37,919 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.49122807017543857 [2024-06-28 01:21:37,919 INFO L175 Difference]: Start difference. First operand has 62 places, 57 transitions, 340 flow. Second operand 6 states and 112 transitions. [2024-06-28 01:21:37,920 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 67 places, 78 transitions, 528 flow [2024-06-28 01:21:37,922 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 66 places, 78 transitions, 491 flow, removed 16 selfloop flow, removed 1 redundant places. [2024-06-28 01:21:37,923 INFO L231 Difference]: Finished difference. Result has 67 places, 59 transitions, 340 flow [2024-06-28 01:21:37,923 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=303, PETRI_DIFFERENCE_MINUEND_PLACES=61, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=57, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=47, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=340, PETRI_PLACES=67, PETRI_TRANSITIONS=59} [2024-06-28 01:21:37,924 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 25 predicate places. [2024-06-28 01:21:37,924 INFO L495 AbstractCegarLoop]: Abstraction has has 67 places, 59 transitions, 340 flow [2024-06-28 01:21:37,924 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 11.428571428571429) internal successors, (80), 7 states have internal predecessors, (80), 0 states have call successors, (0), 0 states 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 01:21:37,924 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:21:37,924 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:21:37,925 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-06-28 01:21:37,925 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:21:37,925 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:21:37,925 INFO L85 PathProgramCache]: Analyzing trace with hash -1013284091, now seen corresponding path program 1 times [2024-06-28 01:21:37,925 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:21:37,925 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [767393248] [2024-06-28 01:21:37,925 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:21:37,926 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:21:37,933 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:21:38,390 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 01:21:38,391 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:21:38,391 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [767393248] [2024-06-28 01:21:38,391 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [767393248] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:21:38,391 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:21:38,391 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-28 01:21:38,392 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1246275586] [2024-06-28 01:21:38,392 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:21:38,392 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-28 01:21:38,392 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:21:38,392 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-28 01:21:38,393 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2024-06-28 01:21:38,453 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 38 [2024-06-28 01:21:38,454 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 67 places, 59 transitions, 340 flow. Second operand has 7 states, 7 states have (on average 11.428571428571429) internal successors, (80), 7 states have internal predecessors, (80), 0 states have call successors, (0), 0 states 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 01:21:38,454 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:21:38,454 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 38 [2024-06-28 01:21:38,454 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:21:38,665 INFO L124 PetriNetUnfolderBase]: 610/1147 cut-off events. [2024-06-28 01:21:38,665 INFO L125 PetriNetUnfolderBase]: For 2140/2143 co-relation queries the response was YES. [2024-06-28 01:21:38,667 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3533 conditions, 1147 events. 610/1147 cut-off events. For 2140/2143 co-relation queries the response was YES. Maximal size of possible extension queue 66. Compared 6190 event pairs, 140 based on Foata normal form. 4/1116 useless extension candidates. Maximal degree in co-relation 3505. Up to 965 conditions per place. [2024-06-28 01:21:38,672 INFO L140 encePairwiseOnDemand]: 30/38 looper letters, 63 selfloop transitions, 13 changer transitions 0/86 dead transitions. [2024-06-28 01:21:38,672 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 72 places, 86 transitions, 591 flow [2024-06-28 01:21:38,672 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-28 01:21:38,672 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-28 01:21:38,673 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 115 transitions. [2024-06-28 01:21:38,673 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5043859649122807 [2024-06-28 01:21:38,673 INFO L175 Difference]: Start difference. First operand has 67 places, 59 transitions, 340 flow. Second operand 6 states and 115 transitions. [2024-06-28 01:21:38,673 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 72 places, 86 transitions, 591 flow [2024-06-28 01:21:38,676 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 68 places, 86 transitions, 567 flow, removed 2 selfloop flow, removed 4 redundant places. [2024-06-28 01:21:38,677 INFO L231 Difference]: Finished difference. Result has 70 places, 66 transitions, 400 flow [2024-06-28 01:21:38,677 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=319, PETRI_DIFFERENCE_MINUEND_PLACES=63, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=59, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=48, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=400, PETRI_PLACES=70, PETRI_TRANSITIONS=66} [2024-06-28 01:21:38,677 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 28 predicate places. [2024-06-28 01:21:38,678 INFO L495 AbstractCegarLoop]: Abstraction has has 70 places, 66 transitions, 400 flow [2024-06-28 01:21:38,678 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 11.428571428571429) internal successors, (80), 7 states have internal predecessors, (80), 0 states have call successors, (0), 0 states 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 01:21:38,678 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:21:38,678 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:21:38,678 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-06-28 01:21:38,678 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:21:38,679 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:21:38,679 INFO L85 PathProgramCache]: Analyzing trace with hash -346063961, now seen corresponding path program 2 times [2024-06-28 01:21:38,679 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:21:38,679 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1677224130] [2024-06-28 01:21:38,679 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:21:38,679 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:21:38,686 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:21:39,131 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 01:21:39,132 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:21:39,132 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1677224130] [2024-06-28 01:21:39,132 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1677224130] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:21:39,132 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:21:39,132 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-28 01:21:39,133 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1949853877] [2024-06-28 01:21:39,133 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:21:39,133 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-28 01:21:39,133 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:21:39,133 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-28 01:21:39,134 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2024-06-28 01:21:39,185 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 38 [2024-06-28 01:21:39,186 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 70 places, 66 transitions, 400 flow. Second operand has 7 states, 7 states have (on average 11.428571428571429) internal successors, (80), 7 states have internal predecessors, (80), 0 states have call successors, (0), 0 states 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 01:21:39,186 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:21:39,186 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 38 [2024-06-28 01:21:39,186 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:21:39,415 INFO L124 PetriNetUnfolderBase]: 607/1165 cut-off events. [2024-06-28 01:21:39,416 INFO L125 PetriNetUnfolderBase]: For 2664/2670 co-relation queries the response was YES. [2024-06-28 01:21:39,418 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3722 conditions, 1165 events. 607/1165 cut-off events. For 2664/2670 co-relation queries the response was YES. Maximal size of possible extension queue 69. Compared 6415 event pairs, 187 based on Foata normal form. 7/1137 useless extension candidates. Maximal degree in co-relation 3692. Up to 989 conditions per place. [2024-06-28 01:21:39,422 INFO L140 encePairwiseOnDemand]: 30/38 looper letters, 60 selfloop transitions, 10 changer transitions 0/80 dead transitions. [2024-06-28 01:21:39,422 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 75 places, 80 transitions, 574 flow [2024-06-28 01:21:39,422 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-28 01:21:39,422 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-28 01:21:39,423 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 108 transitions. [2024-06-28 01:21:39,423 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.47368421052631576 [2024-06-28 01:21:39,423 INFO L175 Difference]: Start difference. First operand has 70 places, 66 transitions, 400 flow. Second operand 6 states and 108 transitions. [2024-06-28 01:21:39,423 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 75 places, 80 transitions, 574 flow [2024-06-28 01:21:39,426 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 74 places, 80 transitions, 564 flow, removed 4 selfloop flow, removed 1 redundant places. [2024-06-28 01:21:39,427 INFO L231 Difference]: Finished difference. Result has 75 places, 66 transitions, 415 flow [2024-06-28 01:21:39,427 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=390, PETRI_DIFFERENCE_MINUEND_PLACES=69, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=66, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=56, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=415, PETRI_PLACES=75, PETRI_TRANSITIONS=66} [2024-06-28 01:21:39,428 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 33 predicate places. [2024-06-28 01:21:39,428 INFO L495 AbstractCegarLoop]: Abstraction has has 75 places, 66 transitions, 415 flow [2024-06-28 01:21:39,428 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 11.428571428571429) internal successors, (80), 7 states have internal predecessors, (80), 0 states have call successors, (0), 0 states 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 01:21:39,428 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:21:39,428 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:21:39,429 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-06-28 01:21:39,429 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:21:39,429 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:21:39,429 INFO L85 PathProgramCache]: Analyzing trace with hash 1291407360, now seen corresponding path program 1 times [2024-06-28 01:21:39,429 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:21:39,429 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [916335126] [2024-06-28 01:21:39,430 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:21:39,430 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:21:39,437 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:21:40,170 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 01:21:40,170 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:21:40,170 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [916335126] [2024-06-28 01:21:40,170 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [916335126] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:21:40,171 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:21:40,171 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 01:21:40,171 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [695736391] [2024-06-28 01:21:40,171 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:21:40,171 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 01:21:40,171 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:21:40,172 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 01:21:40,172 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2024-06-28 01:21:40,250 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 38 [2024-06-28 01:21:40,250 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 75 places, 66 transitions, 415 flow. Second operand has 9 states, 9 states have (on average 13.11111111111111) internal successors, (118), 9 states have internal predecessors, (118), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:21:40,251 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:21:40,251 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 38 [2024-06-28 01:21:40,251 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:21:40,530 INFO L124 PetriNetUnfolderBase]: 502/975 cut-off events. [2024-06-28 01:21:40,531 INFO L125 PetriNetUnfolderBase]: For 2993/2993 co-relation queries the response was YES. [2024-06-28 01:21:40,532 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3274 conditions, 975 events. 502/975 cut-off events. For 2993/2993 co-relation queries the response was YES. Maximal size of possible extension queue 62. Compared 5248 event pairs, 79 based on Foata normal form. 4/947 useless extension candidates. Maximal degree in co-relation 3242. Up to 719 conditions per place. [2024-06-28 01:21:40,536 INFO L140 encePairwiseOnDemand]: 27/38 looper letters, 85 selfloop transitions, 15 changer transitions 0/114 dead transitions. [2024-06-28 01:21:40,536 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 82 places, 114 transitions, 757 flow [2024-06-28 01:21:40,537 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 01:21:40,537 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 01:21:40,537 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 191 transitions. [2024-06-28 01:21:40,538 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5584795321637427 [2024-06-28 01:21:40,538 INFO L175 Difference]: Start difference. First operand has 75 places, 66 transitions, 415 flow. Second operand 9 states and 191 transitions. [2024-06-28 01:21:40,538 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 82 places, 114 transitions, 757 flow [2024-06-28 01:21:40,541 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 77 places, 114 transitions, 726 flow, removed 3 selfloop flow, removed 5 redundant places. [2024-06-28 01:21:40,543 INFO L231 Difference]: Finished difference. Result has 80 places, 69 transitions, 448 flow [2024-06-28 01:21:40,543 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=372, PETRI_DIFFERENCE_MINUEND_PLACES=69, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=65, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=50, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=448, PETRI_PLACES=80, PETRI_TRANSITIONS=69} [2024-06-28 01:21:40,543 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 38 predicate places. [2024-06-28 01:21:40,543 INFO L495 AbstractCegarLoop]: Abstraction has has 80 places, 69 transitions, 448 flow [2024-06-28 01:21:40,544 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 13.11111111111111) internal successors, (118), 9 states have internal predecessors, (118), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:21:40,544 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:21:40,544 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:21:40,544 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2024-06-28 01:21:40,544 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:21:40,544 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:21:40,545 INFO L85 PathProgramCache]: Analyzing trace with hash -1347214268, now seen corresponding path program 1 times [2024-06-28 01:21:40,545 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:21:40,545 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1660471873] [2024-06-28 01:21:40,545 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:21:40,545 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:21:40,552 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:21:41,122 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 01:21:41,123 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:21:41,123 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1660471873] [2024-06-28 01:21:41,123 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1660471873] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:21:41,123 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:21:41,123 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 01:21:41,123 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2136083499] [2024-06-28 01:21:41,123 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:21:41,124 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 01:21:41,124 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:21:41,124 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 01:21:41,124 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2024-06-28 01:21:41,197 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 38 [2024-06-28 01:21:41,197 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 80 places, 69 transitions, 448 flow. Second operand has 8 states, 8 states have (on average 10.375) internal successors, (83), 8 states have internal predecessors, (83), 0 states have call successors, (0), 0 states 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 01:21:41,197 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:21:41,197 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 38 [2024-06-28 01:21:41,197 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:21:41,439 INFO L124 PetriNetUnfolderBase]: 667/1215 cut-off events. [2024-06-28 01:21:41,440 INFO L125 PetriNetUnfolderBase]: For 3587/3587 co-relation queries the response was YES. [2024-06-28 01:21:41,442 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4180 conditions, 1215 events. 667/1215 cut-off events. For 3587/3587 co-relation queries the response was YES. Maximal size of possible extension queue 71. Compared 6436 event pairs, 140 based on Foata normal form. 1/1181 useless extension candidates. Maximal degree in co-relation 4146. Up to 1006 conditions per place. [2024-06-28 01:21:41,446 INFO L140 encePairwiseOnDemand]: 29/38 looper letters, 76 selfloop transitions, 18 changer transitions 0/101 dead transitions. [2024-06-28 01:21:41,447 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 86 places, 101 transitions, 754 flow [2024-06-28 01:21:41,447 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 01:21:41,447 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 01:21:41,448 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 129 transitions. [2024-06-28 01:21:41,448 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4849624060150376 [2024-06-28 01:21:41,448 INFO L175 Difference]: Start difference. First operand has 80 places, 69 transitions, 448 flow. Second operand 7 states and 129 transitions. [2024-06-28 01:21:41,448 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 86 places, 101 transitions, 754 flow [2024-06-28 01:21:41,451 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 81 places, 101 transitions, 721 flow, removed 5 selfloop flow, removed 5 redundant places. [2024-06-28 01:21:41,453 INFO L231 Difference]: Finished difference. Result has 82 places, 73 transitions, 484 flow [2024-06-28 01:21:41,453 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=415, PETRI_DIFFERENCE_MINUEND_PLACES=75, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=69, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=16, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=53, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=484, PETRI_PLACES=82, PETRI_TRANSITIONS=73} [2024-06-28 01:21:41,453 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 40 predicate places. [2024-06-28 01:21:41,454 INFO L495 AbstractCegarLoop]: Abstraction has has 82 places, 73 transitions, 484 flow [2024-06-28 01:21:41,454 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 10.375) internal successors, (83), 8 states have internal predecessors, (83), 0 states have call successors, (0), 0 states 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 01:21:41,454 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:21:41,454 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:21:41,454 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2024-06-28 01:21:41,454 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:21:41,455 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:21:41,455 INFO L85 PathProgramCache]: Analyzing trace with hash 1895646164, now seen corresponding path program 1 times [2024-06-28 01:21:41,455 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:21:41,455 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1881344297] [2024-06-28 01:21:41,455 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:21:41,455 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:21:41,461 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:21:42,061 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 01:21:42,061 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:21:42,061 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1881344297] [2024-06-28 01:21:42,061 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1881344297] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:21:42,061 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:21:42,061 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 01:21:42,062 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [118534395] [2024-06-28 01:21:42,062 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:21:42,062 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 01:21:42,063 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:21:42,063 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 01:21:42,063 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2024-06-28 01:21:42,116 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 38 [2024-06-28 01:21:42,116 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 82 places, 73 transitions, 484 flow. Second operand has 8 states, 8 states have (on average 11.375) internal successors, (91), 8 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:21:42,116 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:21:42,116 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 38 [2024-06-28 01:21:42,116 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:21:42,384 INFO L124 PetriNetUnfolderBase]: 691/1284 cut-off events. [2024-06-28 01:21:42,385 INFO L125 PetriNetUnfolderBase]: For 4357/4361 co-relation queries the response was YES. [2024-06-28 01:21:42,388 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4417 conditions, 1284 events. 691/1284 cut-off events. For 4357/4361 co-relation queries the response was YES. Maximal size of possible extension queue 74. Compared 6990 event pairs, 152 based on Foata normal form. 7/1253 useless extension candidates. Maximal degree in co-relation 4381. Up to 996 conditions per place. [2024-06-28 01:21:42,392 INFO L140 encePairwiseOnDemand]: 28/38 looper letters, 79 selfloop transitions, 18 changer transitions 0/109 dead transitions. [2024-06-28 01:21:42,392 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 88 places, 109 transitions, 810 flow [2024-06-28 01:21:42,393 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 01:21:42,393 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 01:21:42,393 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 137 transitions. [2024-06-28 01:21:42,394 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5150375939849624 [2024-06-28 01:21:42,394 INFO L175 Difference]: Start difference. First operand has 82 places, 73 transitions, 484 flow. Second operand 7 states and 137 transitions. [2024-06-28 01:21:42,394 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 88 places, 109 transitions, 810 flow [2024-06-28 01:21:42,398 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 85 places, 109 transitions, 785 flow, removed 5 selfloop flow, removed 3 redundant places. [2024-06-28 01:21:42,399 INFO L231 Difference]: Finished difference. Result has 87 places, 80 transitions, 554 flow [2024-06-28 01:21:42,400 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=459, PETRI_DIFFERENCE_MINUEND_PLACES=79, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=73, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=13, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=57, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=554, PETRI_PLACES=87, PETRI_TRANSITIONS=80} [2024-06-28 01:21:42,400 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 45 predicate places. [2024-06-28 01:21:42,400 INFO L495 AbstractCegarLoop]: Abstraction has has 87 places, 80 transitions, 554 flow [2024-06-28 01:21:42,400 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 11.375) internal successors, (91), 8 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:21:42,401 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:21:42,401 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:21:42,401 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2024-06-28 01:21:42,401 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:21:42,401 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:21:42,401 INFO L85 PathProgramCache]: Analyzing trace with hash -1347034778, now seen corresponding path program 2 times [2024-06-28 01:21:42,402 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:21:42,402 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [306708973] [2024-06-28 01:21:42,402 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:21:42,402 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:21:42,408 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:21:42,970 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 01:21:42,970 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:21:42,971 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [306708973] [2024-06-28 01:21:42,971 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [306708973] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:21:42,971 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:21:42,971 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 01:21:42,971 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1366809055] [2024-06-28 01:21:42,971 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:21:42,971 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 01:21:42,972 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:21:42,972 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 01:21:42,972 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2024-06-28 01:21:43,030 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 38 [2024-06-28 01:21:43,031 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 87 places, 80 transitions, 554 flow. Second operand has 8 states, 8 states have (on average 10.375) internal successors, (83), 8 states have internal predecessors, (83), 0 states have call successors, (0), 0 states 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 01:21:43,031 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:21:43,031 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 38 [2024-06-28 01:21:43,031 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:21:43,286 INFO L124 PetriNetUnfolderBase]: 740/1352 cut-off events. [2024-06-28 01:21:43,287 INFO L125 PetriNetUnfolderBase]: For 5426/5426 co-relation queries the response was YES. [2024-06-28 01:21:43,289 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5075 conditions, 1352 events. 740/1352 cut-off events. For 5426/5426 co-relation queries the response was YES. Maximal size of possible extension queue 76. Compared 7272 event pairs, 155 based on Foata normal form. 1/1312 useless extension candidates. Maximal degree in co-relation 5036. Up to 1114 conditions per place. [2024-06-28 01:21:43,294 INFO L140 encePairwiseOnDemand]: 29/38 looper letters, 81 selfloop transitions, 19 changer transitions 0/107 dead transitions. [2024-06-28 01:21:43,295 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 93 places, 107 transitions, 864 flow [2024-06-28 01:21:43,295 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 01:21:43,295 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 01:21:43,296 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 127 transitions. [2024-06-28 01:21:43,296 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4774436090225564 [2024-06-28 01:21:43,296 INFO L175 Difference]: Start difference. First operand has 87 places, 80 transitions, 554 flow. Second operand 7 states and 127 transitions. [2024-06-28 01:21:43,296 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 93 places, 107 transitions, 864 flow [2024-06-28 01:21:43,302 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 91 places, 107 transitions, 851 flow, removed 4 selfloop flow, removed 2 redundant places. [2024-06-28 01:21:43,303 INFO L231 Difference]: Finished difference. Result has 92 places, 82 transitions, 598 flow [2024-06-28 01:21:43,303 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=541, PETRI_DIFFERENCE_MINUEND_PLACES=85, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=80, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=17, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=63, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=598, PETRI_PLACES=92, PETRI_TRANSITIONS=82} [2024-06-28 01:21:43,304 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 50 predicate places. [2024-06-28 01:21:43,304 INFO L495 AbstractCegarLoop]: Abstraction has has 92 places, 82 transitions, 598 flow [2024-06-28 01:21:43,304 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 10.375) internal successors, (83), 8 states have internal predecessors, (83), 0 states have call successors, (0), 0 states 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 01:21:43,304 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:21:43,304 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:21:43,304 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2024-06-28 01:21:43,304 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:21:43,305 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:21:43,305 INFO L85 PathProgramCache]: Analyzing trace with hash -2137721480, now seen corresponding path program 2 times [2024-06-28 01:21:43,305 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:21:43,305 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1411157583] [2024-06-28 01:21:43,305 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:21:43,305 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:21:43,312 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:21:43,837 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 01:21:43,837 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:21:43,837 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1411157583] [2024-06-28 01:21:43,837 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1411157583] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:21:43,837 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:21:43,838 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 01:21:43,838 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1437235507] [2024-06-28 01:21:43,838 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:21:43,838 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 01:21:43,838 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:21:43,839 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 01:21:43,839 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2024-06-28 01:21:43,907 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 38 [2024-06-28 01:21:43,907 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 92 places, 82 transitions, 598 flow. Second operand has 8 states, 8 states have (on average 11.375) internal successors, (91), 8 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:21:43,907 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:21:43,907 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 38 [2024-06-28 01:21:43,907 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:21:44,216 INFO L124 PetriNetUnfolderBase]: 730/1396 cut-off events. [2024-06-28 01:21:44,216 INFO L125 PetriNetUnfolderBase]: For 6243/6251 co-relation queries the response was YES. [2024-06-28 01:21:44,220 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5156 conditions, 1396 events. 730/1396 cut-off events. For 6243/6251 co-relation queries the response was YES. Maximal size of possible extension queue 83. Compared 7927 event pairs, 209 based on Foata normal form. 11/1362 useless extension candidates. Maximal degree in co-relation 5114. Up to 1137 conditions per place. [2024-06-28 01:21:44,224 INFO L140 encePairwiseOnDemand]: 28/38 looper letters, 77 selfloop transitions, 13 changer transitions 0/103 dead transitions. [2024-06-28 01:21:44,224 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 98 places, 103 transitions, 842 flow [2024-06-28 01:21:44,225 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 01:21:44,225 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 01:21:44,225 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 125 transitions. [2024-06-28 01:21:44,226 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4699248120300752 [2024-06-28 01:21:44,226 INFO L175 Difference]: Start difference. First operand has 92 places, 82 transitions, 598 flow. Second operand 7 states and 125 transitions. [2024-06-28 01:21:44,226 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 98 places, 103 transitions, 842 flow [2024-06-28 01:21:44,232 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 94 places, 103 transitions, 809 flow, removed 3 selfloop flow, removed 4 redundant places. [2024-06-28 01:21:44,233 INFO L231 Difference]: Finished difference. Result has 95 places, 84 transitions, 616 flow [2024-06-28 01:21:44,234 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=565, PETRI_DIFFERENCE_MINUEND_PLACES=88, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=82, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=69, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=616, PETRI_PLACES=95, PETRI_TRANSITIONS=84} [2024-06-28 01:21:44,234 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 53 predicate places. [2024-06-28 01:21:44,234 INFO L495 AbstractCegarLoop]: Abstraction has has 95 places, 84 transitions, 616 flow [2024-06-28 01:21:44,234 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 11.375) internal successors, (91), 8 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:21:44,234 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:21:44,235 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:21:44,235 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2024-06-28 01:21:44,235 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:21:44,235 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:21:44,235 INFO L85 PathProgramCache]: Analyzing trace with hash -1082259810, now seen corresponding path program 3 times [2024-06-28 01:21:44,235 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:21:44,235 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [505275468] [2024-06-28 01:21:44,236 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:21:44,236 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:21:44,242 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:21:44,731 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 01:21:44,732 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:21:44,732 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [505275468] [2024-06-28 01:21:44,732 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [505275468] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:21:44,732 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:21:44,732 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 01:21:44,732 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [476565954] [2024-06-28 01:21:44,732 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:21:44,733 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 01:21:44,733 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:21:44,733 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 01:21:44,733 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2024-06-28 01:21:44,795 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 38 [2024-06-28 01:21:44,795 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 95 places, 84 transitions, 616 flow. Second operand has 8 states, 8 states have (on average 11.375) internal successors, (91), 8 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:21:44,795 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:21:44,795 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 38 [2024-06-28 01:21:44,796 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:21:45,125 INFO L124 PetriNetUnfolderBase]: 724/1375 cut-off events. [2024-06-28 01:21:45,125 INFO L125 PetriNetUnfolderBase]: For 6714/6722 co-relation queries the response was YES. [2024-06-28 01:21:45,128 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5134 conditions, 1375 events. 724/1375 cut-off events. For 6714/6722 co-relation queries the response was YES. Maximal size of possible extension queue 81. Compared 7745 event pairs, 199 based on Foata normal form. 11/1344 useless extension candidates. Maximal degree in co-relation 5091. Up to 1086 conditions per place. [2024-06-28 01:21:45,137 INFO L140 encePairwiseOnDemand]: 28/38 looper letters, 78 selfloop transitions, 16 changer transitions 0/107 dead transitions. [2024-06-28 01:21:45,137 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 101 places, 107 transitions, 868 flow [2024-06-28 01:21:45,137 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 01:21:45,137 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 01:21:45,139 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 130 transitions. [2024-06-28 01:21:45,139 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.48872180451127817 [2024-06-28 01:21:45,139 INFO L175 Difference]: Start difference. First operand has 95 places, 84 transitions, 616 flow. Second operand 7 states and 130 transitions. [2024-06-28 01:21:45,139 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 101 places, 107 transitions, 868 flow [2024-06-28 01:21:45,147 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 96 places, 107 transitions, 827 flow, removed 7 selfloop flow, removed 5 redundant places. [2024-06-28 01:21:45,148 INFO L231 Difference]: Finished difference. Result has 97 places, 84 transitions, 612 flow [2024-06-28 01:21:45,148 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=575, PETRI_DIFFERENCE_MINUEND_PLACES=90, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=84, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=16, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=68, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=612, PETRI_PLACES=97, PETRI_TRANSITIONS=84} [2024-06-28 01:21:45,149 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 55 predicate places. [2024-06-28 01:21:45,149 INFO L495 AbstractCegarLoop]: Abstraction has has 97 places, 84 transitions, 612 flow [2024-06-28 01:21:45,149 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 11.375) internal successors, (91), 8 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:21:45,149 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:21:45,150 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:21:45,150 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2024-06-28 01:21:45,150 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:21:45,150 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:21:45,150 INFO L85 PathProgramCache]: Analyzing trace with hash -1082260058, now seen corresponding path program 3 times [2024-06-28 01:21:45,150 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:21:45,150 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1345472377] [2024-06-28 01:21:45,151 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:21:45,151 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:21:45,157 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:21:45,638 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:21:45,639 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:21:45,639 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1345472377] [2024-06-28 01:21:45,639 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1345472377] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:21:45,639 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:21:45,639 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 01:21:45,639 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1275859840] [2024-06-28 01:21:45,639 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:21:45,639 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 01:21:45,639 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:21:45,640 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 01:21:45,640 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2024-06-28 01:21:45,681 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 38 [2024-06-28 01:21:45,681 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 97 places, 84 transitions, 612 flow. Second operand has 8 states, 8 states have (on average 10.375) internal successors, (83), 8 states have internal predecessors, (83), 0 states have call successors, (0), 0 states 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 01:21:45,681 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:21:45,681 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 38 [2024-06-28 01:21:45,681 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:21:45,985 INFO L124 PetriNetUnfolderBase]: 765/1429 cut-off events. [2024-06-28 01:21:45,985 INFO L125 PetriNetUnfolderBase]: For 7150/7150 co-relation queries the response was YES. [2024-06-28 01:21:45,989 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5392 conditions, 1429 events. 765/1429 cut-off events. For 7150/7150 co-relation queries the response was YES. Maximal size of possible extension queue 82. Compared 7962 event pairs, 206 based on Foata normal form. 1/1385 useless extension candidates. Maximal degree in co-relation 5349. Up to 1219 conditions per place. [2024-06-28 01:21:45,993 INFO L140 encePairwiseOnDemand]: 29/38 looper letters, 84 selfloop transitions, 12 changer transitions 0/103 dead transitions. [2024-06-28 01:21:45,993 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 103 places, 103 transitions, 856 flow [2024-06-28 01:21:45,994 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 01:21:45,994 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 01:21:45,994 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 118 transitions. [2024-06-28 01:21:45,995 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44360902255639095 [2024-06-28 01:21:45,995 INFO L175 Difference]: Start difference. First operand has 97 places, 84 transitions, 612 flow. Second operand 7 states and 118 transitions. [2024-06-28 01:21:45,995 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 103 places, 103 transitions, 856 flow [2024-06-28 01:21:46,003 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 97 places, 103 transitions, 805 flow, removed 6 selfloop flow, removed 6 redundant places. [2024-06-28 01:21:46,004 INFO L231 Difference]: Finished difference. Result has 98 places, 84 transitions, 590 flow [2024-06-28 01:21:46,004 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=561, PETRI_DIFFERENCE_MINUEND_PLACES=91, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=84, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=72, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=590, PETRI_PLACES=98, PETRI_TRANSITIONS=84} [2024-06-28 01:21:46,005 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 56 predicate places. [2024-06-28 01:21:46,005 INFO L495 AbstractCegarLoop]: Abstraction has has 98 places, 84 transitions, 590 flow [2024-06-28 01:21:46,005 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 10.375) internal successors, (83), 8 states have internal predecessors, (83), 0 states have call successors, (0), 0 states 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 01:21:46,005 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:21:46,005 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:21:46,005 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2024-06-28 01:21:46,006 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:21:46,006 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:21:46,006 INFO L85 PathProgramCache]: Analyzing trace with hash 1185881924, now seen corresponding path program 1 times [2024-06-28 01:21:46,006 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:21:46,006 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [590152168] [2024-06-28 01:21:46,006 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:21:46,006 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:21:46,012 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:21:46,611 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:21:46,612 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:21:46,612 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [590152168] [2024-06-28 01:21:46,612 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [590152168] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:21:46,612 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:21:46,612 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 01:21:46,612 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1698685912] [2024-06-28 01:21:46,613 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:21:46,613 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 01:21:46,613 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:21:46,614 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 01:21:46,614 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2024-06-28 01:21:46,670 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 38 [2024-06-28 01:21:46,670 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 98 places, 84 transitions, 590 flow. Second operand has 9 states, 9 states have (on average 10.333333333333334) internal successors, (93), 9 states have internal predecessors, (93), 0 states have call successors, (0), 0 states 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 01:21:46,670 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:21:46,670 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 38 [2024-06-28 01:21:46,670 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:21:46,996 INFO L124 PetriNetUnfolderBase]: 779/1406 cut-off events. [2024-06-28 01:21:46,996 INFO L125 PetriNetUnfolderBase]: For 7315/7315 co-relation queries the response was YES. [2024-06-28 01:21:46,999 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5346 conditions, 1406 events. 779/1406 cut-off events. For 7315/7315 co-relation queries the response was YES. Maximal size of possible extension queue 83. Compared 7647 event pairs, 151 based on Foata normal form. 1/1368 useless extension candidates. Maximal degree in co-relation 5302. Up to 1124 conditions per place. [2024-06-28 01:21:47,003 INFO L140 encePairwiseOnDemand]: 28/38 looper letters, 92 selfloop transitions, 25 changer transitions 0/124 dead transitions. [2024-06-28 01:21:47,003 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 105 places, 124 transitions, 984 flow [2024-06-28 01:21:47,003 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 01:21:47,003 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 01:21:47,005 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 149 transitions. [2024-06-28 01:21:47,005 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4901315789473684 [2024-06-28 01:21:47,005 INFO L175 Difference]: Start difference. First operand has 98 places, 84 transitions, 590 flow. Second operand 8 states and 149 transitions. [2024-06-28 01:21:47,005 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 105 places, 124 transitions, 984 flow [2024-06-28 01:21:47,011 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 98 places, 124 transitions, 942 flow, removed 2 selfloop flow, removed 7 redundant places. [2024-06-28 01:21:47,013 INFO L231 Difference]: Finished difference. Result has 99 places, 88 transitions, 631 flow [2024-06-28 01:21:47,013 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=548, PETRI_DIFFERENCE_MINUEND_PLACES=91, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=84, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=23, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=61, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=631, PETRI_PLACES=99, PETRI_TRANSITIONS=88} [2024-06-28 01:21:47,013 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 57 predicate places. [2024-06-28 01:21:47,013 INFO L495 AbstractCegarLoop]: Abstraction has has 99 places, 88 transitions, 631 flow [2024-06-28 01:21:47,014 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 10.333333333333334) internal successors, (93), 9 states have internal predecessors, (93), 0 states have call successors, (0), 0 states 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 01:21:47,014 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:21:47,014 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:21:47,014 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2024-06-28 01:21:47,014 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:21:47,014 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:21:47,015 INFO L85 PathProgramCache]: Analyzing trace with hash 1186031871, now seen corresponding path program 1 times [2024-06-28 01:21:47,015 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:21:47,015 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1402917003] [2024-06-28 01:21:47,015 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:21:47,015 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:21:47,025 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:21:47,644 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 01:21:47,645 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:21:47,645 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1402917003] [2024-06-28 01:21:47,645 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1402917003] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:21:47,645 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:21:47,645 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 01:21:47,645 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2119060305] [2024-06-28 01:21:47,646 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:21:47,646 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 01:21:47,646 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:21:47,646 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 01:21:47,646 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2024-06-28 01:21:47,709 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 38 [2024-06-28 01:21:47,709 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 99 places, 88 transitions, 631 flow. Second operand has 9 states, 9 states have (on average 10.333333333333334) internal successors, (93), 9 states have internal predecessors, (93), 0 states have call successors, (0), 0 states 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 01:21:47,709 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:21:47,709 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 38 [2024-06-28 01:21:47,710 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:21:48,060 INFO L124 PetriNetUnfolderBase]: 841/1492 cut-off events. [2024-06-28 01:21:48,060 INFO L125 PetriNetUnfolderBase]: For 8862/8862 co-relation queries the response was YES. [2024-06-28 01:21:48,064 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5891 conditions, 1492 events. 841/1492 cut-off events. For 8862/8862 co-relation queries the response was YES. Maximal size of possible extension queue 88. Compared 8111 event pairs, 173 based on Foata normal form. 3/1461 useless extension candidates. Maximal degree in co-relation 5846. Up to 1037 conditions per place. [2024-06-28 01:21:48,069 INFO L140 encePairwiseOnDemand]: 27/38 looper letters, 96 selfloop transitions, 28 changer transitions 0/131 dead transitions. [2024-06-28 01:21:48,069 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 106 places, 131 transitions, 1055 flow [2024-06-28 01:21:48,070 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 01:21:48,070 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 01:21:48,070 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 154 transitions. [2024-06-28 01:21:48,070 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.506578947368421 [2024-06-28 01:21:48,070 INFO L175 Difference]: Start difference. First operand has 99 places, 88 transitions, 631 flow. Second operand 8 states and 154 transitions. [2024-06-28 01:21:48,071 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 106 places, 131 transitions, 1055 flow [2024-06-28 01:21:48,082 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 102 places, 131 transitions, 1018 flow, removed 6 selfloop flow, removed 4 redundant places. [2024-06-28 01:21:48,086 INFO L231 Difference]: Finished difference. Result has 103 places, 92 transitions, 687 flow [2024-06-28 01:21:48,086 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=594, PETRI_DIFFERENCE_MINUEND_PLACES=95, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=88, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=26, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=62, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=687, PETRI_PLACES=103, PETRI_TRANSITIONS=92} [2024-06-28 01:21:48,087 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 61 predicate places. [2024-06-28 01:21:48,087 INFO L495 AbstractCegarLoop]: Abstraction has has 103 places, 92 transitions, 687 flow [2024-06-28 01:21:48,088 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 10.333333333333334) internal successors, (93), 9 states have internal predecessors, (93), 0 states have call successors, (0), 0 states 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 01:21:48,088 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:21:48,088 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:21:48,089 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2024-06-28 01:21:48,089 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:21:48,089 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:21:48,089 INFO L85 PathProgramCache]: Analyzing trace with hash -1277513816, now seen corresponding path program 2 times [2024-06-28 01:21:48,089 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:21:48,089 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1717538180] [2024-06-28 01:21:48,089 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:21:48,090 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:21:48,097 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:21:48,689 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 01:21:48,689 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:21:48,689 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1717538180] [2024-06-28 01:21:48,689 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1717538180] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:21:48,689 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:21:48,689 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 01:21:48,689 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1516452899] [2024-06-28 01:21:48,689 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:21:48,689 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 01:21:48,690 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:21:48,690 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 01:21:48,690 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2024-06-28 01:21:48,742 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 38 [2024-06-28 01:21:48,743 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 103 places, 92 transitions, 687 flow. Second operand has 9 states, 9 states have (on average 10.333333333333334) internal successors, (93), 9 states have internal predecessors, (93), 0 states have call successors, (0), 0 states 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 01:21:48,743 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:21:48,743 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 38 [2024-06-28 01:21:48,743 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:21:49,048 INFO L124 PetriNetUnfolderBase]: 852/1539 cut-off events. [2024-06-28 01:21:49,048 INFO L125 PetriNetUnfolderBase]: For 9758/9758 co-relation queries the response was YES. [2024-06-28 01:21:49,052 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6268 conditions, 1539 events. 852/1539 cut-off events. For 9758/9758 co-relation queries the response was YES. Maximal size of possible extension queue 90. Compared 8564 event pairs, 167 based on Foata normal form. 1/1495 useless extension candidates. Maximal degree in co-relation 6221. Up to 1232 conditions per place. [2024-06-28 01:21:49,056 INFO L140 encePairwiseOnDemand]: 28/38 looper letters, 95 selfloop transitions, 25 changer transitions 0/127 dead transitions. [2024-06-28 01:21:49,056 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 110 places, 127 transitions, 1071 flow [2024-06-28 01:21:49,057 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 01:21:49,057 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 01:21:49,057 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 147 transitions. [2024-06-28 01:21:49,057 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.48355263157894735 [2024-06-28 01:21:49,058 INFO L175 Difference]: Start difference. First operand has 103 places, 92 transitions, 687 flow. Second operand 8 states and 147 transitions. [2024-06-28 01:21:49,058 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 110 places, 127 transitions, 1071 flow [2024-06-28 01:21:49,068 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 106 places, 127 transitions, 1034 flow, removed 6 selfloop flow, removed 4 redundant places. [2024-06-28 01:21:49,070 INFO L231 Difference]: Finished difference. Result has 107 places, 94 transitions, 717 flow [2024-06-28 01:21:49,070 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=650, PETRI_DIFFERENCE_MINUEND_PLACES=99, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=92, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=23, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=69, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=717, PETRI_PLACES=107, PETRI_TRANSITIONS=94} [2024-06-28 01:21:49,070 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 65 predicate places. [2024-06-28 01:21:49,070 INFO L495 AbstractCegarLoop]: Abstraction has has 107 places, 94 transitions, 717 flow [2024-06-28 01:21:49,071 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 10.333333333333334) internal successors, (93), 9 states have internal predecessors, (93), 0 states have call successors, (0), 0 states 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 01:21:49,071 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:21:49,071 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:21:49,071 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2024-06-28 01:21:49,071 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:21:49,071 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:21:49,071 INFO L85 PathProgramCache]: Analyzing trace with hash -1364517529, now seen corresponding path program 2 times [2024-06-28 01:21:49,072 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:21:49,072 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [815404106] [2024-06-28 01:21:49,072 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:21:49,072 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:21:49,078 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:21:49,649 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 01:21:49,649 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:21:49,649 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [815404106] [2024-06-28 01:21:49,649 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [815404106] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:21:49,649 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:21:49,649 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 01:21:49,649 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [310864892] [2024-06-28 01:21:49,649 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:21:49,650 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 01:21:49,650 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:21:49,650 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 01:21:49,650 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2024-06-28 01:21:49,694 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 38 [2024-06-28 01:21:49,695 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 107 places, 94 transitions, 717 flow. Second operand has 9 states, 9 states have (on average 10.333333333333334) internal successors, (93), 9 states have internal predecessors, (93), 0 states have call successors, (0), 0 states 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 01:21:49,695 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:21:49,695 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 38 [2024-06-28 01:21:49,695 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:21:50,051 INFO L124 PetriNetUnfolderBase]: 924/1627 cut-off events. [2024-06-28 01:21:50,052 INFO L125 PetriNetUnfolderBase]: For 11596/11596 co-relation queries the response was YES. [2024-06-28 01:21:50,055 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6833 conditions, 1627 events. 924/1627 cut-off events. For 11596/11596 co-relation queries the response was YES. Maximal size of possible extension queue 94. Compared 8958 event pairs, 187 based on Foata normal form. 3/1594 useless extension candidates. Maximal degree in co-relation 6784. Up to 1106 conditions per place. [2024-06-28 01:21:50,060 INFO L140 encePairwiseOnDemand]: 27/38 looper letters, 101 selfloop transitions, 29 changer transitions 0/137 dead transitions. [2024-06-28 01:21:50,060 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 114 places, 137 transitions, 1199 flow [2024-06-28 01:21:50,060 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 01:21:50,060 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 01:21:50,061 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 156 transitions. [2024-06-28 01:21:50,061 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5131578947368421 [2024-06-28 01:21:50,061 INFO L175 Difference]: Start difference. First operand has 107 places, 94 transitions, 717 flow. Second operand 8 states and 156 transitions. [2024-06-28 01:21:50,061 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 114 places, 137 transitions, 1199 flow [2024-06-28 01:21:50,074 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 109 places, 137 transitions, 1158 flow, removed 2 selfloop flow, removed 5 redundant places. [2024-06-28 01:21:50,076 INFO L231 Difference]: Finished difference. Result has 110 places, 98 transitions, 771 flow [2024-06-28 01:21:50,076 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=676, PETRI_DIFFERENCE_MINUEND_PLACES=102, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=94, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=25, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=69, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=771, PETRI_PLACES=110, PETRI_TRANSITIONS=98} [2024-06-28 01:21:50,076 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 68 predicate places. [2024-06-28 01:21:50,077 INFO L495 AbstractCegarLoop]: Abstraction has has 110 places, 98 transitions, 771 flow [2024-06-28 01:21:50,077 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 10.333333333333334) internal successors, (93), 9 states have internal predecessors, (93), 0 states have call successors, (0), 0 states 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 01:21:50,077 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:21:50,077 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:21:50,077 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2024-06-28 01:21:50,077 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:21:50,077 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:21:50,078 INFO L85 PathProgramCache]: Analyzing trace with hash -1364510089, now seen corresponding path program 3 times [2024-06-28 01:21:50,078 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:21:50,078 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [397507897] [2024-06-28 01:21:50,078 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:21:50,078 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:21:50,085 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:21:50,673 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 01:21:50,674 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:21:50,674 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [397507897] [2024-06-28 01:21:50,674 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [397507897] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:21:50,674 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:21:50,674 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 01:21:50,674 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [718425421] [2024-06-28 01:21:50,674 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:21:50,674 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 01:21:50,674 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:21:50,675 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 01:21:50,675 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2024-06-28 01:21:50,724 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 38 [2024-06-28 01:21:50,724 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 110 places, 98 transitions, 771 flow. Second operand has 9 states, 9 states have (on average 10.333333333333334) internal successors, (93), 9 states have internal predecessors, (93), 0 states have call successors, (0), 0 states 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 01:21:50,724 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:21:50,724 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 38 [2024-06-28 01:21:50,724 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:21:51,026 INFO L124 PetriNetUnfolderBase]: 918/1618 cut-off events. [2024-06-28 01:21:51,026 INFO L125 PetriNetUnfolderBase]: For 12212/12212 co-relation queries the response was YES. [2024-06-28 01:21:51,030 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6902 conditions, 1618 events. 918/1618 cut-off events. For 12212/12212 co-relation queries the response was YES. Maximal size of possible extension queue 94. Compared 8899 event pairs, 175 based on Foata normal form. 3/1585 useless extension candidates. Maximal degree in co-relation 6852. Up to 1102 conditions per place. [2024-06-28 01:21:51,036 INFO L140 encePairwiseOnDemand]: 27/38 looper letters, 97 selfloop transitions, 30 changer transitions 0/134 dead transitions. [2024-06-28 01:21:51,036 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 117 places, 134 transitions, 1171 flow [2024-06-28 01:21:51,037 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 01:21:51,037 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 01:21:51,037 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 152 transitions. [2024-06-28 01:21:51,037 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5 [2024-06-28 01:21:51,038 INFO L175 Difference]: Start difference. First operand has 110 places, 98 transitions, 771 flow. Second operand 8 states and 152 transitions. [2024-06-28 01:21:51,038 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 117 places, 134 transitions, 1171 flow [2024-06-28 01:21:51,050 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 113 places, 134 transitions, 1119 flow, removed 7 selfloop flow, removed 4 redundant places. [2024-06-28 01:21:51,052 INFO L231 Difference]: Finished difference. Result has 114 places, 98 transitions, 784 flow [2024-06-28 01:21:51,052 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=719, PETRI_DIFFERENCE_MINUEND_PLACES=106, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=98, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=30, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=68, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=784, PETRI_PLACES=114, PETRI_TRANSITIONS=98} [2024-06-28 01:21:51,053 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 72 predicate places. [2024-06-28 01:21:51,053 INFO L495 AbstractCegarLoop]: Abstraction has has 114 places, 98 transitions, 784 flow [2024-06-28 01:21:51,053 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 10.333333333333334) internal successors, (93), 9 states have internal predecessors, (93), 0 states have call successors, (0), 0 states 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 01:21:51,053 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:21:51,053 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:21:51,053 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2024-06-28 01:21:51,054 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:21:51,054 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:21:51,054 INFO L85 PathProgramCache]: Analyzing trace with hash -1364517746, now seen corresponding path program 3 times [2024-06-28 01:21:51,054 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:21:51,054 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2034994075] [2024-06-28 01:21:51,054 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:21:51,055 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:21:51,069 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:21:51,683 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 01:21:51,683 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:21:51,683 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2034994075] [2024-06-28 01:21:51,683 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2034994075] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:21:51,683 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:21:51,683 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 01:21:51,683 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1482184390] [2024-06-28 01:21:51,684 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:21:51,684 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 01:21:51,684 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:21:51,684 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 01:21:51,684 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2024-06-28 01:21:51,756 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 38 [2024-06-28 01:21:51,756 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 114 places, 98 transitions, 784 flow. Second operand has 9 states, 9 states have (on average 10.333333333333334) internal successors, (93), 9 states have internal predecessors, (93), 0 states have call successors, (0), 0 states 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 01:21:51,756 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:21:51,756 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 38 [2024-06-28 01:21:51,756 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:21:52,072 INFO L124 PetriNetUnfolderBase]: 929/1676 cut-off events. [2024-06-28 01:21:52,073 INFO L125 PetriNetUnfolderBase]: For 12928/12928 co-relation queries the response was YES. [2024-06-28 01:21:52,077 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7021 conditions, 1676 events. 929/1676 cut-off events. For 12928/12928 co-relation queries the response was YES. Maximal size of possible extension queue 95. Compared 9540 event pairs, 204 based on Foata normal form. 1/1628 useless extension candidates. Maximal degree in co-relation 6970. Up to 1346 conditions per place. [2024-06-28 01:21:52,082 INFO L140 encePairwiseOnDemand]: 28/38 looper letters, 97 selfloop transitions, 26 changer transitions 0/130 dead transitions. [2024-06-28 01:21:52,082 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 121 places, 130 transitions, 1174 flow [2024-06-28 01:21:52,083 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 01:21:52,083 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 01:21:52,083 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 145 transitions. [2024-06-28 01:21:52,083 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4769736842105263 [2024-06-28 01:21:52,084 INFO L175 Difference]: Start difference. First operand has 114 places, 98 transitions, 784 flow. Second operand 8 states and 145 transitions. [2024-06-28 01:21:52,084 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 121 places, 130 transitions, 1174 flow [2024-06-28 01:21:52,097 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 114 places, 130 transitions, 1109 flow, removed 1 selfloop flow, removed 7 redundant places. [2024-06-28 01:21:52,101 INFO L231 Difference]: Finished difference. Result has 115 places, 100 transitions, 790 flow [2024-06-28 01:21:52,102 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=719, PETRI_DIFFERENCE_MINUEND_PLACES=107, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=98, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=24, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=74, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=790, PETRI_PLACES=115, PETRI_TRANSITIONS=100} [2024-06-28 01:21:52,102 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 73 predicate places. [2024-06-28 01:21:52,102 INFO L495 AbstractCegarLoop]: Abstraction has has 115 places, 100 transitions, 790 flow [2024-06-28 01:21:52,102 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 10.333333333333334) internal successors, (93), 9 states have internal predecessors, (93), 0 states have call successors, (0), 0 states 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 01:21:52,102 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:21:52,103 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:21:52,103 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2024-06-28 01:21:52,103 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:21:52,104 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:21:52,104 INFO L85 PathProgramCache]: Analyzing trace with hash -1844855469, now seen corresponding path program 4 times [2024-06-28 01:21:52,104 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:21:52,104 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [692859495] [2024-06-28 01:21:52,104 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:21:52,104 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:21:52,110 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:21:52,672 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 01:21:52,673 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:21:52,673 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [692859495] [2024-06-28 01:21:52,673 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [692859495] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:21:52,673 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:21:52,673 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 01:21:52,673 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1970498522] [2024-06-28 01:21:52,673 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:21:52,674 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 01:21:52,674 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:21:52,674 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 01:21:52,674 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2024-06-28 01:21:52,735 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 38 [2024-06-28 01:21:52,735 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 115 places, 100 transitions, 790 flow. Second operand has 9 states, 9 states have (on average 10.333333333333334) internal successors, (93), 9 states have internal predecessors, (93), 0 states have call successors, (0), 0 states 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 01:21:52,736 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:21:52,736 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 38 [2024-06-28 01:21:52,736 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:21:53,145 INFO L124 PetriNetUnfolderBase]: 962/1771 cut-off events. [2024-06-28 01:21:53,145 INFO L125 PetriNetUnfolderBase]: For 14432/14432 co-relation queries the response was YES. [2024-06-28 01:21:53,149 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7219 conditions, 1771 events. 962/1771 cut-off events. For 14432/14432 co-relation queries the response was YES. Maximal size of possible extension queue 103. Compared 10413 event pairs, 259 based on Foata normal form. 3/1719 useless extension candidates. Maximal degree in co-relation 7167. Up to 1461 conditions per place. [2024-06-28 01:21:53,153 INFO L140 encePairwiseOnDemand]: 27/38 looper letters, 106 selfloop transitions, 15 changer transitions 0/128 dead transitions. [2024-06-28 01:21:53,153 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 122 places, 128 transitions, 1120 flow [2024-06-28 01:21:53,154 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 01:21:53,154 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 01:21:53,155 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 137 transitions. [2024-06-28 01:21:53,155 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4506578947368421 [2024-06-28 01:21:53,155 INFO L175 Difference]: Start difference. First operand has 115 places, 100 transitions, 790 flow. Second operand 8 states and 137 transitions. [2024-06-28 01:21:53,155 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 122 places, 128 transitions, 1120 flow [2024-06-28 01:21:53,167 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 117 places, 128 transitions, 1077 flow, removed 2 selfloop flow, removed 5 redundant places. [2024-06-28 01:21:53,169 INFO L231 Difference]: Finished difference. Result has 118 places, 102 transitions, 804 flow [2024-06-28 01:21:53,170 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=747, PETRI_DIFFERENCE_MINUEND_PLACES=110, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=100, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=13, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=85, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=804, PETRI_PLACES=118, PETRI_TRANSITIONS=102} [2024-06-28 01:21:53,170 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 76 predicate places. [2024-06-28 01:21:53,170 INFO L495 AbstractCegarLoop]: Abstraction has has 118 places, 102 transitions, 804 flow [2024-06-28 01:21:53,170 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 10.333333333333334) internal successors, (93), 9 states have internal predecessors, (93), 0 states have call successors, (0), 0 states 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 01:21:53,170 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:21:53,171 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:21:53,171 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2024-06-28 01:21:53,171 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:21:53,171 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:21:53,171 INFO L85 PathProgramCache]: Analyzing trace with hash 819785308, now seen corresponding path program 1 times [2024-06-28 01:21:53,171 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:21:53,171 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1371297790] [2024-06-28 01:21:53,172 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:21:53,172 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:21:53,201 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:21:53,945 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 01:21:53,946 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:21:53,946 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1371297790] [2024-06-28 01:21:53,946 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1371297790] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:21:53,946 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:21:53,946 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 01:21:53,946 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1569765979] [2024-06-28 01:21:53,946 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:21:53,947 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 01:21:53,947 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:21:53,947 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 01:21:53,947 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2024-06-28 01:21:54,026 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 38 [2024-06-28 01:21:54,027 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 118 places, 102 transitions, 804 flow. Second operand has 9 states, 9 states have (on average 11.333333333333334) internal successors, (102), 9 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 01:21:54,027 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:21:54,027 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 38 [2024-06-28 01:21:54,027 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:21:54,518 INFO L124 PetriNetUnfolderBase]: 863/1625 cut-off events. [2024-06-28 01:21:54,519 INFO L125 PetriNetUnfolderBase]: For 14255/14263 co-relation queries the response was YES. [2024-06-28 01:21:54,522 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6596 conditions, 1625 events. 863/1625 cut-off events. For 14255/14263 co-relation queries the response was YES. Maximal size of possible extension queue 99. Compared 9640 event pairs, 241 based on Foata normal form. 10/1591 useless extension candidates. Maximal degree in co-relation 6543. Up to 1324 conditions per place. [2024-06-28 01:21:54,528 INFO L140 encePairwiseOnDemand]: 28/38 looper letters, 95 selfloop transitions, 16 changer transitions 0/129 dead transitions. [2024-06-28 01:21:54,528 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 125 places, 129 transitions, 1114 flow [2024-06-28 01:21:54,528 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 01:21:54,528 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 01:21:54,529 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 141 transitions. [2024-06-28 01:21:54,529 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.46381578947368424 [2024-06-28 01:21:54,529 INFO L175 Difference]: Start difference. First operand has 118 places, 102 transitions, 804 flow. Second operand 8 states and 141 transitions. [2024-06-28 01:21:54,529 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 125 places, 129 transitions, 1114 flow [2024-06-28 01:21:54,539 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 119 places, 129 transitions, 1079 flow, removed 4 selfloop flow, removed 6 redundant places. [2024-06-28 01:21:54,541 INFO L231 Difference]: Finished difference. Result has 121 places, 107 transitions, 856 flow [2024-06-28 01:21:54,541 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=769, PETRI_DIFFERENCE_MINUEND_PLACES=112, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=102, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=86, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=856, PETRI_PLACES=121, PETRI_TRANSITIONS=107} [2024-06-28 01:21:54,541 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 79 predicate places. [2024-06-28 01:21:54,541 INFO L495 AbstractCegarLoop]: Abstraction has has 121 places, 107 transitions, 856 flow [2024-06-28 01:21:54,542 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 11.333333333333334) internal successors, (102), 9 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 01:21:54,542 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:21:54,542 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:21:54,542 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2024-06-28 01:21:54,542 INFO L420 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:21:54,542 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:21:54,542 INFO L85 PathProgramCache]: Analyzing trace with hash 1410816727, now seen corresponding path program 5 times [2024-06-28 01:21:54,543 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:21:54,543 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [433051392] [2024-06-28 01:21:54,543 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:21:54,543 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:21:54,548 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:21:55,128 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 01:21:55,128 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:21:55,128 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [433051392] [2024-06-28 01:21:55,128 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [433051392] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:21:55,128 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:21:55,129 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 01:21:55,129 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [303532622] [2024-06-28 01:21:55,129 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:21:55,129 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 01:21:55,129 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:21:55,130 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 01:21:55,130 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2024-06-28 01:21:55,180 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 38 [2024-06-28 01:21:55,181 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 121 places, 107 transitions, 856 flow. Second operand has 9 states, 9 states have (on average 10.333333333333334) internal successors, (93), 9 states have internal predecessors, (93), 0 states have call successors, (0), 0 states 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 01:21:55,181 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:21:55,181 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 38 [2024-06-28 01:21:55,181 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:21:55,566 INFO L124 PetriNetUnfolderBase]: 997/1801 cut-off events. [2024-06-28 01:21:55,566 INFO L125 PetriNetUnfolderBase]: For 16486/16486 co-relation queries the response was YES. [2024-06-28 01:21:55,571 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7608 conditions, 1801 events. 997/1801 cut-off events. For 16486/16486 co-relation queries the response was YES. Maximal size of possible extension queue 105. Compared 10449 event pairs, 242 based on Foata normal form. 3/1756 useless extension candidates. Maximal degree in co-relation 7553. Up to 1380 conditions per place. [2024-06-28 01:21:55,576 INFO L140 encePairwiseOnDemand]: 27/38 looper letters, 110 selfloop transitions, 23 changer transitions 0/140 dead transitions. [2024-06-28 01:21:55,577 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 128 places, 140 transitions, 1286 flow [2024-06-28 01:21:55,584 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 01:21:55,585 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 01:21:55,585 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 144 transitions. [2024-06-28 01:21:55,585 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.47368421052631576 [2024-06-28 01:21:55,585 INFO L175 Difference]: Start difference. First operand has 121 places, 107 transitions, 856 flow. Second operand 8 states and 144 transitions. [2024-06-28 01:21:55,585 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 128 places, 140 transitions, 1286 flow [2024-06-28 01:21:55,601 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 123 places, 140 transitions, 1239 flow, removed 11 selfloop flow, removed 5 redundant places. [2024-06-28 01:21:55,603 INFO L231 Difference]: Finished difference. Result has 124 places, 109 transitions, 882 flow [2024-06-28 01:21:55,603 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=809, PETRI_DIFFERENCE_MINUEND_PLACES=116, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=107, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=21, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=86, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=882, PETRI_PLACES=124, PETRI_TRANSITIONS=109} [2024-06-28 01:21:55,604 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 82 predicate places. [2024-06-28 01:21:55,604 INFO L495 AbstractCegarLoop]: Abstraction has has 124 places, 109 transitions, 882 flow [2024-06-28 01:21:55,608 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 10.333333333333334) internal successors, (93), 9 states have internal predecessors, (93), 0 states have call successors, (0), 0 states 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 01:21:55,608 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:21:55,608 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:21:55,608 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2024-06-28 01:21:55,608 INFO L420 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:21:55,609 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:21:55,609 INFO L85 PathProgramCache]: Analyzing trace with hash -993105866, now seen corresponding path program 4 times [2024-06-28 01:21:55,609 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:21:55,609 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1150314403] [2024-06-28 01:21:55,609 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:21:55,609 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:21:55,616 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:21:56,168 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 01:21:56,168 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:21:56,168 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1150314403] [2024-06-28 01:21:56,168 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1150314403] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:21:56,168 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:21:56,168 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 01:21:56,168 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1643166697] [2024-06-28 01:21:56,169 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:21:56,169 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 01:21:56,169 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:21:56,169 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 01:21:56,169 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2024-06-28 01:21:56,218 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 38 [2024-06-28 01:21:56,218 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 124 places, 109 transitions, 882 flow. Second operand has 9 states, 9 states have (on average 10.333333333333334) internal successors, (93), 9 states have internal predecessors, (93), 0 states have call successors, (0), 0 states 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 01:21:56,219 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:21:56,219 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 38 [2024-06-28 01:21:56,219 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:21:56,569 INFO L124 PetriNetUnfolderBase]: 995/1833 cut-off events. [2024-06-28 01:21:56,569 INFO L125 PetriNetUnfolderBase]: For 17009/17009 co-relation queries the response was YES. [2024-06-28 01:21:56,574 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7712 conditions, 1833 events. 995/1833 cut-off events. For 17009/17009 co-relation queries the response was YES. Maximal size of possible extension queue 107. Compared 10828 event pairs, 282 based on Foata normal form. 1/1777 useless extension candidates. Maximal degree in co-relation 7656. Up to 1565 conditions per place. [2024-06-28 01:21:56,579 INFO L140 encePairwiseOnDemand]: 28/38 looper letters, 112 selfloop transitions, 14 changer transitions 0/133 dead transitions. [2024-06-28 01:21:56,579 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 131 places, 133 transitions, 1208 flow [2024-06-28 01:21:56,579 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 01:21:56,579 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 01:21:56,580 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 134 transitions. [2024-06-28 01:21:56,580 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4407894736842105 [2024-06-28 01:21:56,580 INFO L175 Difference]: Start difference. First operand has 124 places, 109 transitions, 882 flow. Second operand 8 states and 134 transitions. [2024-06-28 01:21:56,580 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 131 places, 133 transitions, 1208 flow [2024-06-28 01:21:56,598 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 124 places, 133 transitions, 1123 flow, removed 8 selfloop flow, removed 7 redundant places. [2024-06-28 01:21:56,600 INFO L231 Difference]: Finished difference. Result has 125 places, 109 transitions, 830 flow [2024-06-28 01:21:56,600 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=797, PETRI_DIFFERENCE_MINUEND_PLACES=117, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=109, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=95, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=830, PETRI_PLACES=125, PETRI_TRANSITIONS=109} [2024-06-28 01:21:56,600 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 83 predicate places. [2024-06-28 01:21:56,601 INFO L495 AbstractCegarLoop]: Abstraction has has 125 places, 109 transitions, 830 flow [2024-06-28 01:21:56,601 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 10.333333333333334) internal successors, (93), 9 states have internal predecessors, (93), 0 states have call successors, (0), 0 states 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 01:21:56,601 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:21:56,601 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:21:56,601 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2024-06-28 01:21:56,601 INFO L420 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:21:56,601 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:21:56,602 INFO L85 PathProgramCache]: Analyzing trace with hash 809685229, now seen corresponding path program 6 times [2024-06-28 01:21:56,602 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:21:56,602 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [821322067] [2024-06-28 01:21:56,602 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:21:56,602 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:21:56,608 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:21:57,187 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 01:21:57,187 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:21:57,188 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [821322067] [2024-06-28 01:21:57,188 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [821322067] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:21:57,188 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:21:57,188 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 01:21:57,188 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1808775591] [2024-06-28 01:21:57,188 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:21:57,189 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 01:21:57,189 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:21:57,189 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 01:21:57,189 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2024-06-28 01:21:57,255 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 38 [2024-06-28 01:21:57,256 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 125 places, 109 transitions, 830 flow. Second operand has 9 states, 9 states have (on average 10.333333333333334) internal successors, (93), 9 states have internal predecessors, (93), 0 states have call successors, (0), 0 states 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 01:21:57,256 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:21:57,256 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 38 [2024-06-28 01:21:57,256 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:21:57,665 INFO L124 PetriNetUnfolderBase]: 989/1793 cut-off events. [2024-06-28 01:21:57,666 INFO L125 PetriNetUnfolderBase]: For 16603/16603 co-relation queries the response was YES. [2024-06-28 01:21:57,671 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7358 conditions, 1793 events. 989/1793 cut-off events. For 16603/16603 co-relation queries the response was YES. Maximal size of possible extension queue 105. Compared 10434 event pairs, 256 based on Foata normal form. 3/1747 useless extension candidates. Maximal degree in co-relation 7301. Up to 1373 conditions per place. [2024-06-28 01:21:57,676 INFO L140 encePairwiseOnDemand]: 27/38 looper letters, 110 selfloop transitions, 22 changer transitions 0/139 dead transitions. [2024-06-28 01:21:57,676 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 132 places, 139 transitions, 1186 flow [2024-06-28 01:21:57,692 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 01:21:57,692 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 01:21:57,693 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 144 transitions. [2024-06-28 01:21:57,693 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.47368421052631576 [2024-06-28 01:21:57,693 INFO L175 Difference]: Start difference. First operand has 125 places, 109 transitions, 830 flow. Second operand 8 states and 144 transitions. [2024-06-28 01:21:57,693 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 132 places, 139 transitions, 1186 flow [2024-06-28 01:21:57,708 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 123 places, 139 transitions, 1121 flow, removed 3 selfloop flow, removed 9 redundant places. [2024-06-28 01:21:57,710 INFO L231 Difference]: Finished difference. Result has 124 places, 109 transitions, 814 flow [2024-06-28 01:21:57,710 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=765, PETRI_DIFFERENCE_MINUEND_PLACES=116, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=109, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=22, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=87, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=814, PETRI_PLACES=124, PETRI_TRANSITIONS=109} [2024-06-28 01:21:57,710 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 82 predicate places. [2024-06-28 01:21:57,710 INFO L495 AbstractCegarLoop]: Abstraction has has 124 places, 109 transitions, 814 flow [2024-06-28 01:21:57,711 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 10.333333333333334) internal successors, (93), 9 states have internal predecessors, (93), 0 states have call successors, (0), 0 states 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 01:21:57,711 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:21:57,711 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:21:57,711 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2024-06-28 01:21:57,711 INFO L420 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:21:57,711 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:21:57,712 INFO L85 PathProgramCache]: Analyzing trace with hash 820144133, now seen corresponding path program 1 times [2024-06-28 01:21:57,712 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:21:57,712 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [237652787] [2024-06-28 01:21:57,712 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:21:57,712 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:21:57,721 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:21:58,828 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:21:58,828 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:21:58,828 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [237652787] [2024-06-28 01:21:58,828 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [237652787] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:21:58,828 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:21:58,828 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 01:21:58,828 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1255718645] [2024-06-28 01:21:58,829 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:21:58,829 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 01:21:58,829 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:21:58,829 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 01:21:58,829 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2024-06-28 01:21:58,913 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 38 [2024-06-28 01:21:58,914 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 124 places, 109 transitions, 814 flow. Second operand has 10 states, 10 states have (on average 11.3) internal successors, (113), 10 states have internal predecessors, (113), 0 states have call successors, (0), 0 states 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 01:21:58,914 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:21:58,914 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 38 [2024-06-28 01:21:58,914 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:21:59,392 INFO L124 PetriNetUnfolderBase]: 878/1668 cut-off events. [2024-06-28 01:21:59,392 INFO L125 PetriNetUnfolderBase]: For 16201/16207 co-relation queries the response was YES. [2024-06-28 01:21:59,397 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6752 conditions, 1668 events. 878/1668 cut-off events. For 16201/16207 co-relation queries the response was YES. Maximal size of possible extension queue 106. Compared 10065 event pairs, 252 based on Foata normal form. 8/1627 useless extension candidates. Maximal degree in co-relation 6694. Up to 1327 conditions per place. [2024-06-28 01:21:59,401 INFO L140 encePairwiseOnDemand]: 30/38 looper letters, 99 selfloop transitions, 19 changer transitions 0/137 dead transitions. [2024-06-28 01:21:59,401 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 131 places, 137 transitions, 1124 flow [2024-06-28 01:21:59,402 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 01:21:59,402 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 01:21:59,402 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 143 transitions. [2024-06-28 01:21:59,402 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.47039473684210525 [2024-06-28 01:21:59,402 INFO L175 Difference]: Start difference. First operand has 124 places, 109 transitions, 814 flow. Second operand 8 states and 143 transitions. [2024-06-28 01:21:59,402 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 131 places, 137 transitions, 1124 flow [2024-06-28 01:21:59,421 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 124 places, 137 transitions, 1068 flow, removed 3 selfloop flow, removed 7 redundant places. [2024-06-28 01:21:59,423 INFO L231 Difference]: Finished difference. Result has 126 places, 111 transitions, 821 flow [2024-06-28 01:21:59,423 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=758, PETRI_DIFFERENCE_MINUEND_PLACES=117, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=109, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=17, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=91, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=821, PETRI_PLACES=126, PETRI_TRANSITIONS=111} [2024-06-28 01:21:59,424 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 84 predicate places. [2024-06-28 01:21:59,424 INFO L495 AbstractCegarLoop]: Abstraction has has 126 places, 111 transitions, 821 flow [2024-06-28 01:21:59,424 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 11.3) internal successors, (113), 10 states have internal predecessors, (113), 0 states have call successors, (0), 0 states 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 01:21:59,424 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:21:59,424 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:21:59,424 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2024-06-28 01:21:59,425 INFO L420 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:21:59,425 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:21:59,425 INFO L85 PathProgramCache]: Analyzing trace with hash -1892484957, now seen corresponding path program 1 times [2024-06-28 01:21:59,425 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:21:59,425 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1792326843] [2024-06-28 01:21:59,425 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:21:59,425 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:21:59,440 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:22:00,097 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:22:00,097 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:22:00,097 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1792326843] [2024-06-28 01:22:00,097 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1792326843] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:22:00,097 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:22:00,098 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 01:22:00,098 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1483611425] [2024-06-28 01:22:00,098 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:22:00,098 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 01:22:00,098 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:22:00,098 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 01:22:00,099 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2024-06-28 01:22:00,179 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 38 [2024-06-28 01:22:00,179 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 126 places, 111 transitions, 821 flow. Second operand has 10 states, 10 states have (on average 10.3) internal successors, (103), 10 states have internal predecessors, (103), 0 states have call successors, (0), 0 states 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 01:22:00,179 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:22:00,179 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 38 [2024-06-28 01:22:00,180 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:22:00,589 INFO L124 PetriNetUnfolderBase]: 997/1824 cut-off events. [2024-06-28 01:22:00,589 INFO L125 PetriNetUnfolderBase]: For 17028/17028 co-relation queries the response was YES. [2024-06-28 01:22:00,594 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7460 conditions, 1824 events. 997/1824 cut-off events. For 17028/17028 co-relation queries the response was YES. Maximal size of possible extension queue 106. Compared 10729 event pairs, 221 based on Foata normal form. 1/1764 useless extension candidates. Maximal degree in co-relation 7400. Up to 1529 conditions per place. [2024-06-28 01:22:00,599 INFO L140 encePairwiseOnDemand]: 27/38 looper letters, 134 selfloop transitions, 15 changer transitions 0/156 dead transitions. [2024-06-28 01:22:00,599 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 134 places, 156 transitions, 1271 flow [2024-06-28 01:22:00,599 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 01:22:00,599 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 01:22:00,600 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 163 transitions. [2024-06-28 01:22:00,600 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4766081871345029 [2024-06-28 01:22:00,600 INFO L175 Difference]: Start difference. First operand has 126 places, 111 transitions, 821 flow. Second operand 9 states and 163 transitions. [2024-06-28 01:22:00,600 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 134 places, 156 transitions, 1271 flow [2024-06-28 01:22:00,624 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 129 places, 156 transitions, 1230 flow, removed 5 selfloop flow, removed 5 redundant places. [2024-06-28 01:22:00,625 INFO L231 Difference]: Finished difference. Result has 130 places, 113 transitions, 835 flow [2024-06-28 01:22:00,626 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=780, PETRI_DIFFERENCE_MINUEND_PLACES=121, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=111, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=13, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=96, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=835, PETRI_PLACES=130, PETRI_TRANSITIONS=113} [2024-06-28 01:22:00,626 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 88 predicate places. [2024-06-28 01:22:00,626 INFO L495 AbstractCegarLoop]: Abstraction has has 130 places, 113 transitions, 835 flow [2024-06-28 01:22:00,626 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 10.3) internal successors, (103), 10 states have internal predecessors, (103), 0 states have call successors, (0), 0 states 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 01:22:00,626 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:22:00,626 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:22:00,627 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2024-06-28 01:22:00,627 INFO L420 AbstractCegarLoop]: === Iteration 31 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:22:00,627 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:22:00,627 INFO L85 PathProgramCache]: Analyzing trace with hash -1892364987, now seen corresponding path program 2 times [2024-06-28 01:22:00,627 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:22:00,627 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [903264414] [2024-06-28 01:22:00,627 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:22:00,628 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:22:00,634 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:22:01,262 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 01:22:01,262 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:22:01,262 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [903264414] [2024-06-28 01:22:01,263 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [903264414] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:22:01,263 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:22:01,263 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 01:22:01,263 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1381131075] [2024-06-28 01:22:01,263 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:22:01,263 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 01:22:01,263 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:22:01,263 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 01:22:01,264 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2024-06-28 01:22:01,320 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 38 [2024-06-28 01:22:01,320 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 130 places, 113 transitions, 835 flow. Second operand has 10 states, 10 states have (on average 10.3) internal successors, (103), 10 states have internal predecessors, (103), 0 states have call successors, (0), 0 states 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 01:22:01,320 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:22:01,320 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 38 [2024-06-28 01:22:01,320 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:22:01,670 INFO L124 PetriNetUnfolderBase]: 1011/1825 cut-off events. [2024-06-28 01:22:01,670 INFO L125 PetriNetUnfolderBase]: For 18150/18150 co-relation queries the response was YES. [2024-06-28 01:22:01,675 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7660 conditions, 1825 events. 1011/1825 cut-off events. For 18150/18150 co-relation queries the response was YES. Maximal size of possible extension queue 105. Compared 10644 event pairs, 205 based on Foata normal form. 1/1769 useless extension candidates. Maximal degree in co-relation 7599. Up to 1412 conditions per place. [2024-06-28 01:22:01,679 INFO L140 encePairwiseOnDemand]: 27/38 looper letters, 118 selfloop transitions, 33 changer transitions 0/158 dead transitions. [2024-06-28 01:22:01,679 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 138 places, 158 transitions, 1365 flow [2024-06-28 01:22:01,680 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 01:22:01,680 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 01:22:01,680 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 167 transitions. [2024-06-28 01:22:01,681 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.48830409356725146 [2024-06-28 01:22:01,681 INFO L175 Difference]: Start difference. First operand has 130 places, 113 transitions, 835 flow. Second operand 9 states and 167 transitions. [2024-06-28 01:22:01,681 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 138 places, 158 transitions, 1365 flow [2024-06-28 01:22:01,701 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 131 places, 158 transitions, 1326 flow, removed 6 selfloop flow, removed 7 redundant places. [2024-06-28 01:22:01,702 INFO L231 Difference]: Finished difference. Result has 132 places, 117 transitions, 911 flow [2024-06-28 01:22:01,702 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=796, PETRI_DIFFERENCE_MINUEND_PLACES=123, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=113, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=31, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=82, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=911, PETRI_PLACES=132, PETRI_TRANSITIONS=117} [2024-06-28 01:22:01,703 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 90 predicate places. [2024-06-28 01:22:01,703 INFO L495 AbstractCegarLoop]: Abstraction has has 132 places, 117 transitions, 911 flow [2024-06-28 01:22:01,703 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 10.3) internal successors, (103), 10 states have internal predecessors, (103), 0 states have call successors, (0), 0 states 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 01:22:01,703 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:22:01,703 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:22:01,703 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30 [2024-06-28 01:22:01,703 INFO L420 AbstractCegarLoop]: === Iteration 32 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:22:01,703 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:22:01,704 INFO L85 PathProgramCache]: Analyzing trace with hash -1892364801, now seen corresponding path program 1 times [2024-06-28 01:22:01,704 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:22:01,704 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1241975621] [2024-06-28 01:22:01,704 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:22:01,704 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:22:01,713 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:22:02,388 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:22:02,388 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:22:02,388 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1241975621] [2024-06-28 01:22:02,388 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1241975621] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:22:02,388 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:22:02,389 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 01:22:02,389 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [124927575] [2024-06-28 01:22:02,389 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:22:02,389 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 01:22:02,389 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:22:02,389 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 01:22:02,389 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2024-06-28 01:22:02,450 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 38 [2024-06-28 01:22:02,450 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 132 places, 117 transitions, 911 flow. Second operand has 10 states, 10 states have (on average 10.3) internal successors, (103), 10 states have internal predecessors, (103), 0 states have call successors, (0), 0 states 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 01:22:02,450 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:22:02,450 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 38 [2024-06-28 01:22:02,451 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:22:02,840 INFO L124 PetriNetUnfolderBase]: 1073/1923 cut-off events. [2024-06-28 01:22:02,840 INFO L125 PetriNetUnfolderBase]: For 21685/21685 co-relation queries the response was YES. [2024-06-28 01:22:02,846 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8254 conditions, 1923 events. 1073/1923 cut-off events. For 21685/21685 co-relation queries the response was YES. Maximal size of possible extension queue 113. Compared 11219 event pairs, 182 based on Foata normal form. 3/1869 useless extension candidates. Maximal degree in co-relation 8192. Up to 1042 conditions per place. [2024-06-28 01:22:02,851 INFO L140 encePairwiseOnDemand]: 26/38 looper letters, 118 selfloop transitions, 45 changer transitions 0/170 dead transitions. [2024-06-28 01:22:02,851 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 140 places, 170 transitions, 1491 flow [2024-06-28 01:22:02,851 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 01:22:02,851 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 01:22:02,853 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 177 transitions. [2024-06-28 01:22:02,853 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5175438596491229 [2024-06-28 01:22:02,853 INFO L175 Difference]: Start difference. First operand has 132 places, 117 transitions, 911 flow. Second operand 9 states and 177 transitions. [2024-06-28 01:22:02,853 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 140 places, 170 transitions, 1491 flow [2024-06-28 01:22:02,874 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 135 places, 170 transitions, 1440 flow, removed 10 selfloop flow, removed 5 redundant places. [2024-06-28 01:22:02,876 INFO L231 Difference]: Finished difference. Result has 136 places, 121 transitions, 991 flow [2024-06-28 01:22:02,876 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=860, PETRI_DIFFERENCE_MINUEND_PLACES=127, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=117, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=43, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=74, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=991, PETRI_PLACES=136, PETRI_TRANSITIONS=121} [2024-06-28 01:22:02,877 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 94 predicate places. [2024-06-28 01:22:02,877 INFO L495 AbstractCegarLoop]: Abstraction has has 136 places, 121 transitions, 991 flow [2024-06-28 01:22:02,877 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 10.3) internal successors, (103), 10 states have internal predecessors, (103), 0 states have call successors, (0), 0 states 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 01:22:02,877 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:22:02,877 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:22:02,877 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31 [2024-06-28 01:22:02,878 INFO L420 AbstractCegarLoop]: === Iteration 33 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:22:02,878 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:22:02,878 INFO L85 PathProgramCache]: Analyzing trace with hash 477134163, now seen corresponding path program 2 times [2024-06-28 01:22:02,878 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:22:02,878 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [736292146] [2024-06-28 01:22:02,879 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:22:02,879 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:22:02,887 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:22:03,608 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:22:03,608 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:22:03,608 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [736292146] [2024-06-28 01:22:03,608 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [736292146] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:22:03,608 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:22:03,609 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 01:22:03,609 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [252800783] [2024-06-28 01:22:03,609 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:22:03,609 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 01:22:03,609 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:22:03,609 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 01:22:03,610 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2024-06-28 01:22:03,683 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 38 [2024-06-28 01:22:03,683 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 136 places, 121 transitions, 991 flow. Second operand has 10 states, 10 states have (on average 10.3) internal successors, (103), 10 states have internal predecessors, (103), 0 states have call successors, (0), 0 states 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 01:22:03,683 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:22:03,683 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 38 [2024-06-28 01:22:03,683 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:22:04,147 INFO L124 PetriNetUnfolderBase]: 1451/2619 cut-off events. [2024-06-28 01:22:04,147 INFO L125 PetriNetUnfolderBase]: For 28067/28067 co-relation queries the response was YES. [2024-06-28 01:22:04,156 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11624 conditions, 2619 events. 1451/2619 cut-off events. For 28067/28067 co-relation queries the response was YES. Maximal size of possible extension queue 149. Compared 16302 event pairs, 332 based on Foata normal form. 3/2539 useless extension candidates. Maximal degree in co-relation 11560. Up to 1580 conditions per place. [2024-06-28 01:22:04,163 INFO L140 encePairwiseOnDemand]: 25/38 looper letters, 150 selfloop transitions, 44 changer transitions 0/201 dead transitions. [2024-06-28 01:22:04,164 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 145 places, 201 transitions, 1993 flow [2024-06-28 01:22:04,164 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 01:22:04,164 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 01:22:04,164 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 185 transitions. [2024-06-28 01:22:04,165 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4868421052631579 [2024-06-28 01:22:04,165 INFO L175 Difference]: Start difference. First operand has 136 places, 121 transitions, 991 flow. Second operand 10 states and 185 transitions. [2024-06-28 01:22:04,165 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 145 places, 201 transitions, 1993 flow [2024-06-28 01:22:04,203 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 140 places, 201 transitions, 1885 flow, removed 20 selfloop flow, removed 5 redundant places. [2024-06-28 01:22:04,205 INFO L231 Difference]: Finished difference. Result has 146 places, 147 transitions, 1312 flow [2024-06-28 01:22:04,205 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=928, PETRI_DIFFERENCE_MINUEND_PLACES=131, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=121, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=20, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=82, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1312, PETRI_PLACES=146, PETRI_TRANSITIONS=147} [2024-06-28 01:22:04,206 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 104 predicate places. [2024-06-28 01:22:04,206 INFO L495 AbstractCegarLoop]: Abstraction has has 146 places, 147 transitions, 1312 flow [2024-06-28 01:22:04,206 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 10.3) internal successors, (103), 10 states have internal predecessors, (103), 0 states have call successors, (0), 0 states 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 01:22:04,206 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:22:04,206 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:22:04,206 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32 [2024-06-28 01:22:04,206 INFO L420 AbstractCegarLoop]: === Iteration 34 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:22:04,206 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:22:04,207 INFO L85 PathProgramCache]: Analyzing trace with hash -1858830331, now seen corresponding path program 3 times [2024-06-28 01:22:04,207 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:22:04,207 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [136245084] [2024-06-28 01:22:04,207 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:22:04,207 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:22:04,213 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:22:04,833 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 01:22:04,833 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:22:04,833 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [136245084] [2024-06-28 01:22:04,834 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [136245084] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:22:04,834 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:22:04,834 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 01:22:04,834 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [322591020] [2024-06-28 01:22:04,834 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:22:04,834 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 01:22:04,834 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:22:04,834 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 01:22:04,835 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2024-06-28 01:22:04,897 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 38 [2024-06-28 01:22:04,897 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 146 places, 147 transitions, 1312 flow. Second operand has 10 states, 10 states have (on average 10.3) internal successors, (103), 10 states have internal predecessors, (103), 0 states have call successors, (0), 0 states 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 01:22:04,897 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:22:04,897 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 38 [2024-06-28 01:22:04,897 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:22:05,307 INFO L124 PetriNetUnfolderBase]: 1462/2647 cut-off events. [2024-06-28 01:22:05,307 INFO L125 PetriNetUnfolderBase]: For 28335/28341 co-relation queries the response was YES. [2024-06-28 01:22:05,317 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12283 conditions, 2647 events. 1462/2647 cut-off events. For 28335/28341 co-relation queries the response was YES. Maximal size of possible extension queue 149. Compared 16656 event pairs, 303 based on Foata normal form. 7/2558 useless extension candidates. Maximal degree in co-relation 12212. Up to 1982 conditions per place. [2024-06-28 01:22:05,325 INFO L140 encePairwiseOnDemand]: 27/38 looper letters, 138 selfloop transitions, 41 changer transitions 0/186 dead transitions. [2024-06-28 01:22:05,325 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 154 places, 186 transitions, 1878 flow [2024-06-28 01:22:05,333 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 01:22:05,333 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 01:22:05,333 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 165 transitions. [2024-06-28 01:22:05,333 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4824561403508772 [2024-06-28 01:22:05,334 INFO L175 Difference]: Start difference. First operand has 146 places, 147 transitions, 1312 flow. Second operand 9 states and 165 transitions. [2024-06-28 01:22:05,334 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 154 places, 186 transitions, 1878 flow [2024-06-28 01:22:05,384 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 153 places, 186 transitions, 1866 flow, removed 5 selfloop flow, removed 1 redundant places. [2024-06-28 01:22:05,386 INFO L231 Difference]: Finished difference. Result has 154 places, 149 transitions, 1408 flow [2024-06-28 01:22:05,386 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=1300, PETRI_DIFFERENCE_MINUEND_PLACES=145, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=147, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=39, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=108, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1408, PETRI_PLACES=154, PETRI_TRANSITIONS=149} [2024-06-28 01:22:05,387 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 112 predicate places. [2024-06-28 01:22:05,387 INFO L495 AbstractCegarLoop]: Abstraction has has 154 places, 149 transitions, 1408 flow [2024-06-28 01:22:05,387 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 10.3) internal successors, (103), 10 states have internal predecessors, (103), 0 states have call successors, (0), 0 states 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 01:22:05,387 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:22:05,387 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:22:05,387 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33 [2024-06-28 01:22:05,388 INFO L420 AbstractCegarLoop]: === Iteration 35 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:22:05,388 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:22:05,388 INFO L85 PathProgramCache]: Analyzing trace with hash -1887716661, now seen corresponding path program 3 times [2024-06-28 01:22:05,388 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:22:05,388 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1476632388] [2024-06-28 01:22:05,388 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:22:05,388 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:22:05,397 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:22:06,040 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 01:22:06,040 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:22:06,040 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1476632388] [2024-06-28 01:22:06,040 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1476632388] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:22:06,040 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:22:06,040 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 01:22:06,040 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1985816762] [2024-06-28 01:22:06,040 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:22:06,041 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 01:22:06,041 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:22:06,041 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 01:22:06,041 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2024-06-28 01:22:06,117 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 38 [2024-06-28 01:22:06,117 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 154 places, 149 transitions, 1408 flow. Second operand has 10 states, 10 states have (on average 10.3) internal successors, (103), 10 states have internal predecessors, (103), 0 states have call successors, (0), 0 states 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 01:22:06,117 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:22:06,117 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 38 [2024-06-28 01:22:06,118 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:22:06,634 INFO L124 PetriNetUnfolderBase]: 1528/2694 cut-off events. [2024-06-28 01:22:06,635 INFO L125 PetriNetUnfolderBase]: For 33230/33236 co-relation queries the response was YES. [2024-06-28 01:22:06,643 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12914 conditions, 2694 events. 1528/2694 cut-off events. For 33230/33236 co-relation queries the response was YES. Maximal size of possible extension queue 155. Compared 16559 event pairs, 226 based on Foata normal form. 12/2629 useless extension candidates. Maximal degree in co-relation 12840. Up to 1260 conditions per place. [2024-06-28 01:22:06,650 INFO L140 encePairwiseOnDemand]: 26/38 looper letters, 125 selfloop transitions, 67 changer transitions 0/199 dead transitions. [2024-06-28 01:22:06,650 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 162 places, 199 transitions, 2122 flow [2024-06-28 01:22:06,651 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 01:22:06,651 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 01:22:06,651 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 176 transitions. [2024-06-28 01:22:06,651 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5146198830409356 [2024-06-28 01:22:06,651 INFO L175 Difference]: Start difference. First operand has 154 places, 149 transitions, 1408 flow. Second operand 9 states and 176 transitions. [2024-06-28 01:22:06,651 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 162 places, 199 transitions, 2122 flow [2024-06-28 01:22:06,702 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 156 places, 199 transitions, 2045 flow, removed 8 selfloop flow, removed 6 redundant places. [2024-06-28 01:22:06,704 INFO L231 Difference]: Finished difference. Result has 157 places, 153 transitions, 1513 flow [2024-06-28 01:22:06,704 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=1331, PETRI_DIFFERENCE_MINUEND_PLACES=148, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=149, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=63, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=86, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1513, PETRI_PLACES=157, PETRI_TRANSITIONS=153} [2024-06-28 01:22:06,705 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 115 predicate places. [2024-06-28 01:22:06,705 INFO L495 AbstractCegarLoop]: Abstraction has has 157 places, 153 transitions, 1513 flow [2024-06-28 01:22:06,705 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 10.3) internal successors, (103), 10 states have internal predecessors, (103), 0 states have call successors, (0), 0 states 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 01:22:06,705 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:22:06,705 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:22:06,705 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable34 [2024-06-28 01:22:06,705 INFO L420 AbstractCegarLoop]: === Iteration 36 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:22:06,706 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:22:06,706 INFO L85 PathProgramCache]: Analyzing trace with hash -1715226771, now seen corresponding path program 4 times [2024-06-28 01:22:06,706 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:22:06,706 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [42557757] [2024-06-28 01:22:06,706 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:22:06,706 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:22:06,712 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:22:07,362 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 01:22:07,362 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:22:07,362 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [42557757] [2024-06-28 01:22:07,362 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [42557757] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:22:07,362 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:22:07,362 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 01:22:07,362 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [264990321] [2024-06-28 01:22:07,362 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:22:07,363 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 01:22:07,363 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:22:07,363 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 01:22:07,363 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2024-06-28 01:22:07,447 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 38 [2024-06-28 01:22:07,447 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 157 places, 153 transitions, 1513 flow. Second operand has 10 states, 10 states have (on average 10.3) internal successors, (103), 10 states have internal predecessors, (103), 0 states have call successors, (0), 0 states 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 01:22:07,447 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:22:07,447 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 38 [2024-06-28 01:22:07,447 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:22:07,980 INFO L124 PetriNetUnfolderBase]: 1711/2892 cut-off events. [2024-06-28 01:22:07,980 INFO L125 PetriNetUnfolderBase]: For 42998/42998 co-relation queries the response was YES. [2024-06-28 01:22:07,992 INFO L83 FinitePrefix]: Finished finitePrefix Result has 14966 conditions, 2892 events. 1711/2892 cut-off events. For 42998/42998 co-relation queries the response was YES. Maximal size of possible extension queue 173. Compared 17274 event pairs, 276 based on Foata normal form. 6/2852 useless extension candidates. Maximal degree in co-relation 14891. Up to 1392 conditions per place. [2024-06-28 01:22:08,001 INFO L140 encePairwiseOnDemand]: 26/38 looper letters, 133 selfloop transitions, 70 changer transitions 0/210 dead transitions. [2024-06-28 01:22:08,001 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 165 places, 210 transitions, 2477 flow [2024-06-28 01:22:08,002 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 01:22:08,002 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 01:22:08,002 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 180 transitions. [2024-06-28 01:22:08,003 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5263157894736842 [2024-06-28 01:22:08,003 INFO L175 Difference]: Start difference. First operand has 157 places, 153 transitions, 1513 flow. Second operand 9 states and 180 transitions. [2024-06-28 01:22:08,003 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 165 places, 210 transitions, 2477 flow [2024-06-28 01:22:08,083 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 160 places, 210 transitions, 2370 flow, removed 7 selfloop flow, removed 5 redundant places. [2024-06-28 01:22:08,085 INFO L231 Difference]: Finished difference. Result has 161 places, 163 transitions, 1679 flow [2024-06-28 01:22:08,085 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=1416, PETRI_DIFFERENCE_MINUEND_PLACES=152, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=153, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=60, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=93, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1679, PETRI_PLACES=161, PETRI_TRANSITIONS=163} [2024-06-28 01:22:08,086 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 119 predicate places. [2024-06-28 01:22:08,086 INFO L495 AbstractCegarLoop]: Abstraction has has 161 places, 163 transitions, 1679 flow [2024-06-28 01:22:08,086 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 10.3) internal successors, (103), 10 states have internal predecessors, (103), 0 states have call successors, (0), 0 states 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 01:22:08,086 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:22:08,086 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:22:08,086 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable35 [2024-06-28 01:22:08,086 INFO L420 AbstractCegarLoop]: === Iteration 37 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:22:08,086 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:22:08,086 INFO L85 PathProgramCache]: Analyzing trace with hash -1715233281, now seen corresponding path program 5 times [2024-06-28 01:22:08,087 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:22:08,087 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1923865607] [2024-06-28 01:22:08,087 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:22:08,087 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:22:08,097 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:22:08,692 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 01:22:08,692 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:22:08,692 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1923865607] [2024-06-28 01:22:08,692 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1923865607] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:22:08,692 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:22:08,692 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 01:22:08,692 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1347611541] [2024-06-28 01:22:08,692 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:22:08,692 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 01:22:08,693 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:22:08,693 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 01:22:08,693 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2024-06-28 01:22:08,749 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 38 [2024-06-28 01:22:08,750 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 161 places, 163 transitions, 1679 flow. Second operand has 10 states, 10 states have (on average 10.3) internal successors, (103), 10 states have internal predecessors, (103), 0 states have call successors, (0), 0 states 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 01:22:08,750 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:22:08,750 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 38 [2024-06-28 01:22:08,750 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:22:09,267 INFO L124 PetriNetUnfolderBase]: 1699/2874 cut-off events. [2024-06-28 01:22:09,267 INFO L125 PetriNetUnfolderBase]: For 42368/42368 co-relation queries the response was YES. [2024-06-28 01:22:09,278 INFO L83 FinitePrefix]: Finished finitePrefix Result has 14785 conditions, 2874 events. 1699/2874 cut-off events. For 42368/42368 co-relation queries the response was YES. Maximal size of possible extension queue 171. Compared 17081 event pairs, 272 based on Foata normal form. 6/2834 useless extension candidates. Maximal degree in co-relation 14709. Up to 1384 conditions per place. [2024-06-28 01:22:09,286 INFO L140 encePairwiseOnDemand]: 26/38 looper letters, 131 selfloop transitions, 71 changer transitions 0/209 dead transitions. [2024-06-28 01:22:09,286 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 169 places, 209 transitions, 2451 flow [2024-06-28 01:22:09,286 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 01:22:09,286 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 01:22:09,287 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 178 transitions. [2024-06-28 01:22:09,287 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.52046783625731 [2024-06-28 01:22:09,287 INFO L175 Difference]: Start difference. First operand has 161 places, 163 transitions, 1679 flow. Second operand 9 states and 178 transitions. [2024-06-28 01:22:09,287 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 169 places, 209 transitions, 2451 flow [2024-06-28 01:22:09,362 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 164 places, 209 transitions, 2283 flow, removed 18 selfloop flow, removed 5 redundant places. [2024-06-28 01:22:09,364 INFO L231 Difference]: Finished difference. Result has 165 places, 163 transitions, 1660 flow [2024-06-28 01:22:09,365 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=1511, PETRI_DIFFERENCE_MINUEND_PLACES=156, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=163, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=71, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=92, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1660, PETRI_PLACES=165, PETRI_TRANSITIONS=163} [2024-06-28 01:22:09,365 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 123 predicate places. [2024-06-28 01:22:09,365 INFO L495 AbstractCegarLoop]: Abstraction has has 165 places, 163 transitions, 1660 flow [2024-06-28 01:22:09,365 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 10.3) internal successors, (103), 10 states have internal predecessors, (103), 0 states have call successors, (0), 0 states 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 01:22:09,365 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:22:09,365 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:22:09,365 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable36 [2024-06-28 01:22:09,365 INFO L420 AbstractCegarLoop]: === Iteration 38 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:22:09,366 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:22:09,366 INFO L85 PathProgramCache]: Analyzing trace with hash -1715233467, now seen corresponding path program 4 times [2024-06-28 01:22:09,366 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:22:09,366 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2097179284] [2024-06-28 01:22:09,366 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:22:09,366 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:22:09,371 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:22:09,998 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 01:22:09,999 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:22:09,999 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2097179284] [2024-06-28 01:22:09,999 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2097179284] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:22:09,999 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:22:09,999 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 01:22:09,999 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1009215317] [2024-06-28 01:22:09,999 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:22:09,999 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 01:22:09,999 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:22:10,000 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 01:22:10,000 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2024-06-28 01:22:10,084 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 38 [2024-06-28 01:22:10,085 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 165 places, 163 transitions, 1660 flow. Second operand has 10 states, 10 states have (on average 10.3) internal successors, (103), 10 states have internal predecessors, (103), 0 states have call successors, (0), 0 states 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 01:22:10,085 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:22:10,085 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 38 [2024-06-28 01:22:10,085 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:22:10,553 INFO L124 PetriNetUnfolderBase]: 1710/3083 cut-off events. [2024-06-28 01:22:10,553 INFO L125 PetriNetUnfolderBase]: For 40483/40483 co-relation queries the response was YES. [2024-06-28 01:22:10,563 INFO L83 FinitePrefix]: Finished finitePrefix Result has 14977 conditions, 3083 events. 1710/3083 cut-off events. For 40483/40483 co-relation queries the response was YES. Maximal size of possible extension queue 172. Compared 19826 event pairs, 386 based on Foata normal form. 1/2974 useless extension candidates. Maximal degree in co-relation 14900. Up to 2360 conditions per place. [2024-06-28 01:22:10,570 INFO L140 encePairwiseOnDemand]: 27/38 looper letters, 152 selfloop transitions, 40 changer transitions 0/199 dead transitions. [2024-06-28 01:22:10,571 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 173 places, 199 transitions, 2252 flow [2024-06-28 01:22:10,571 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 01:22:10,571 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 01:22:10,571 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 163 transitions. [2024-06-28 01:22:10,572 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4766081871345029 [2024-06-28 01:22:10,572 INFO L175 Difference]: Start difference. First operand has 165 places, 163 transitions, 1660 flow. Second operand 9 states and 163 transitions. [2024-06-28 01:22:10,572 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 173 places, 199 transitions, 2252 flow [2024-06-28 01:22:10,633 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 166 places, 199 transitions, 2120 flow, removed 0 selfloop flow, removed 7 redundant places. [2024-06-28 01:22:10,635 INFO L231 Difference]: Finished difference. Result has 167 places, 165 transitions, 1636 flow [2024-06-28 01:22:10,635 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=1528, PETRI_DIFFERENCE_MINUEND_PLACES=158, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=163, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=38, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=125, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1636, PETRI_PLACES=167, PETRI_TRANSITIONS=165} [2024-06-28 01:22:10,635 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 125 predicate places. [2024-06-28 01:22:10,635 INFO L495 AbstractCegarLoop]: Abstraction has has 167 places, 165 transitions, 1636 flow [2024-06-28 01:22:10,636 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 10.3) internal successors, (103), 10 states have internal predecessors, (103), 0 states have call successors, (0), 0 states 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 01:22:10,636 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:22:10,636 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:22:10,636 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable37 [2024-06-28 01:22:10,636 INFO L420 AbstractCegarLoop]: === Iteration 39 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:22:10,636 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:22:10,636 INFO L85 PathProgramCache]: Analyzing trace with hash -1714996131, now seen corresponding path program 6 times [2024-06-28 01:22:10,637 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:22:10,637 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1731351275] [2024-06-28 01:22:10,637 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:22:10,637 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:22:10,642 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:22:11,237 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 01:22:11,237 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:22:11,237 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1731351275] [2024-06-28 01:22:11,237 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1731351275] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:22:11,237 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:22:11,237 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 01:22:11,237 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1136674619] [2024-06-28 01:22:11,238 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:22:11,238 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 01:22:11,238 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:22:11,238 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 01:22:11,238 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2024-06-28 01:22:11,300 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 38 [2024-06-28 01:22:11,301 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 167 places, 165 transitions, 1636 flow. Second operand has 10 states, 10 states have (on average 10.3) internal successors, (103), 10 states have internal predecessors, (103), 0 states have call successors, (0), 0 states 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 01:22:11,301 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:22:11,301 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 38 [2024-06-28 01:22:11,301 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:22:11,842 INFO L124 PetriNetUnfolderBase]: 1698/2876 cut-off events. [2024-06-28 01:22:11,842 INFO L125 PetriNetUnfolderBase]: For 40032/40032 co-relation queries the response was YES. [2024-06-28 01:22:11,853 INFO L83 FinitePrefix]: Finished finitePrefix Result has 14217 conditions, 2876 events. 1698/2876 cut-off events. For 40032/40032 co-relation queries the response was YES. Maximal size of possible extension queue 170. Compared 17151 event pairs, 296 based on Foata normal form. 6/2835 useless extension candidates. Maximal degree in co-relation 14139. Up to 1393 conditions per place. [2024-06-28 01:22:11,860 INFO L140 encePairwiseOnDemand]: 26/38 looper letters, 128 selfloop transitions, 73 changer transitions 0/208 dead transitions. [2024-06-28 01:22:11,861 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 175 places, 208 transitions, 2334 flow [2024-06-28 01:22:11,861 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 01:22:11,861 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 01:22:11,861 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 174 transitions. [2024-06-28 01:22:11,862 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5087719298245614 [2024-06-28 01:22:11,862 INFO L175 Difference]: Start difference. First operand has 167 places, 165 transitions, 1636 flow. Second operand 9 states and 174 transitions. [2024-06-28 01:22:11,862 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 175 places, 208 transitions, 2334 flow [2024-06-28 01:22:11,932 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 169 places, 208 transitions, 2253 flow, removed 10 selfloop flow, removed 6 redundant places. [2024-06-28 01:22:11,935 INFO L231 Difference]: Finished difference. Result has 170 places, 165 transitions, 1708 flow [2024-06-28 01:22:11,935 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=1555, PETRI_DIFFERENCE_MINUEND_PLACES=161, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=165, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=73, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=92, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1708, PETRI_PLACES=170, PETRI_TRANSITIONS=165} [2024-06-28 01:22:11,935 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 128 predicate places. [2024-06-28 01:22:11,935 INFO L495 AbstractCegarLoop]: Abstraction has has 170 places, 165 transitions, 1708 flow [2024-06-28 01:22:11,935 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 10.3) internal successors, (103), 10 states have internal predecessors, (103), 0 states have call successors, (0), 0 states 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 01:22:11,936 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:22:11,936 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:22:11,936 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable38 [2024-06-28 01:22:11,936 INFO L420 AbstractCegarLoop]: === Iteration 40 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:22:11,936 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:22:11,936 INFO L85 PathProgramCache]: Analyzing trace with hash -67926971, now seen corresponding path program 7 times [2024-06-28 01:22:11,936 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:22:11,936 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1613980244] [2024-06-28 01:22:11,937 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:22:11,937 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:22:11,942 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:22:12,567 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:22:12,567 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:22:12,567 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1613980244] [2024-06-28 01:22:12,567 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1613980244] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:22:12,567 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:22:12,567 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 01:22:12,567 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [998965523] [2024-06-28 01:22:12,567 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:22:12,567 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 01:22:12,568 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:22:12,568 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 01:22:12,568 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2024-06-28 01:22:12,638 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 38 [2024-06-28 01:22:12,638 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 170 places, 165 transitions, 1708 flow. Second operand has 10 states, 10 states have (on average 10.3) internal successors, (103), 10 states have internal predecessors, (103), 0 states have call successors, (0), 0 states 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 01:22:12,638 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:22:12,639 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 38 [2024-06-28 01:22:12,639 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:22:13,194 INFO L124 PetriNetUnfolderBase]: 1731/3042 cut-off events. [2024-06-28 01:22:13,194 INFO L125 PetriNetUnfolderBase]: For 41530/41530 co-relation queries the response was YES. [2024-06-28 01:22:13,208 INFO L83 FinitePrefix]: Finished finitePrefix Result has 15056 conditions, 3042 events. 1731/3042 cut-off events. For 41530/41530 co-relation queries the response was YES. Maximal size of possible extension queue 176. Compared 19171 event pairs, 618 based on Foata normal form. 3/2973 useless extension candidates. Maximal degree in co-relation 14977. Up to 2607 conditions per place. [2024-06-28 01:22:13,217 INFO L140 encePairwiseOnDemand]: 25/38 looper letters, 173 selfloop transitions, 19 changer transitions 0/199 dead transitions. [2024-06-28 01:22:13,218 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 179 places, 199 transitions, 2222 flow [2024-06-28 01:22:13,218 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 01:22:13,218 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 01:22:13,218 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 165 transitions. [2024-06-28 01:22:13,219 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4342105263157895 [2024-06-28 01:22:13,219 INFO L175 Difference]: Start difference. First operand has 170 places, 165 transitions, 1708 flow. Second operand 10 states and 165 transitions. [2024-06-28 01:22:13,219 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 179 places, 199 transitions, 2222 flow [2024-06-28 01:22:13,302 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 170 places, 199 transitions, 2045 flow, removed 2 selfloop flow, removed 9 redundant places. [2024-06-28 01:22:13,304 INFO L231 Difference]: Finished difference. Result has 171 places, 167 transitions, 1606 flow [2024-06-28 01:22:13,304 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=1535, PETRI_DIFFERENCE_MINUEND_PLACES=161, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=165, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=17, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=146, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1606, PETRI_PLACES=171, PETRI_TRANSITIONS=167} [2024-06-28 01:22:13,305 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 129 predicate places. [2024-06-28 01:22:13,305 INFO L495 AbstractCegarLoop]: Abstraction has has 171 places, 167 transitions, 1606 flow [2024-06-28 01:22:13,306 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 10.3) internal successors, (103), 10 states have internal predecessors, (103), 0 states have call successors, (0), 0 states 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 01:22:13,306 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:22:13,306 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:22:13,306 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable39 [2024-06-28 01:22:13,306 INFO L420 AbstractCegarLoop]: === Iteration 41 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:22:13,306 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:22:13,306 INFO L85 PathProgramCache]: Analyzing trace with hash -1697966151, now seen corresponding path program 1 times [2024-06-28 01:22:13,306 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:22:13,306 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [783931974] [2024-06-28 01:22:13,306 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:22:13,306 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:22:13,329 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:22:14,093 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 01:22:14,093 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:22:14,093 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [783931974] [2024-06-28 01:22:14,093 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [783931974] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:22:14,094 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:22:14,094 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 01:22:14,094 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [613511256] [2024-06-28 01:22:14,094 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:22:14,094 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 01:22:14,094 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:22:14,094 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 01:22:14,094 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2024-06-28 01:22:14,167 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 38 [2024-06-28 01:22:14,167 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 171 places, 167 transitions, 1606 flow. Second operand has 10 states, 10 states have (on average 10.3) internal successors, (103), 10 states have internal predecessors, (103), 0 states have call successors, (0), 0 states 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 01:22:14,167 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:22:14,167 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 38 [2024-06-28 01:22:14,167 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:22:14,741 INFO L124 PetriNetUnfolderBase]: 1733/3014 cut-off events. [2024-06-28 01:22:14,741 INFO L125 PetriNetUnfolderBase]: For 39315/39315 co-relation queries the response was YES. [2024-06-28 01:22:14,752 INFO L83 FinitePrefix]: Finished finitePrefix Result has 14349 conditions, 3014 events. 1733/3014 cut-off events. For 39315/39315 co-relation queries the response was YES. Maximal size of possible extension queue 177. Compared 18719 event pairs, 622 based on Foata normal form. 2/2952 useless extension candidates. Maximal degree in co-relation 14269. Up to 2666 conditions per place. [2024-06-28 01:22:14,760 INFO L140 encePairwiseOnDemand]: 27/38 looper letters, 170 selfloop transitions, 19 changer transitions 0/196 dead transitions. [2024-06-28 01:22:14,760 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 179 places, 196 transitions, 2078 flow [2024-06-28 01:22:14,761 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 01:22:14,761 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 01:22:14,761 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 151 transitions. [2024-06-28 01:22:14,761 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4415204678362573 [2024-06-28 01:22:14,761 INFO L175 Difference]: Start difference. First operand has 171 places, 167 transitions, 1606 flow. Second operand 9 states and 151 transitions. [2024-06-28 01:22:14,761 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 179 places, 196 transitions, 2078 flow [2024-06-28 01:22:14,831 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 170 places, 196 transitions, 2026 flow, removed 4 selfloop flow, removed 9 redundant places. [2024-06-28 01:22:14,834 INFO L231 Difference]: Finished difference. Result has 171 places, 169 transitions, 1623 flow [2024-06-28 01:22:14,834 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=1554, PETRI_DIFFERENCE_MINUEND_PLACES=162, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=167, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=17, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=148, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1623, PETRI_PLACES=171, PETRI_TRANSITIONS=169} [2024-06-28 01:22:14,834 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 129 predicate places. [2024-06-28 01:22:14,834 INFO L495 AbstractCegarLoop]: Abstraction has has 171 places, 169 transitions, 1623 flow [2024-06-28 01:22:14,834 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 10.3) internal successors, (103), 10 states have internal predecessors, (103), 0 states have call successors, (0), 0 states 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 01:22:14,834 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:22:14,835 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:22:14,835 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable40 [2024-06-28 01:22:14,835 INFO L420 AbstractCegarLoop]: === Iteration 42 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:22:14,835 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:22:14,835 INFO L85 PathProgramCache]: Analyzing trace with hash -1706537279, now seen corresponding path program 8 times [2024-06-28 01:22:14,835 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:22:14,835 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2033026639] [2024-06-28 01:22:14,835 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:22:14,835 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:22:14,841 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:22:15,418 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 01:22:15,418 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:22:15,418 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2033026639] [2024-06-28 01:22:15,418 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2033026639] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:22:15,418 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:22:15,418 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 01:22:15,418 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1453033598] [2024-06-28 01:22:15,418 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:22:15,419 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 01:22:15,419 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:22:15,419 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 01:22:15,419 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2024-06-28 01:22:15,482 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 38 [2024-06-28 01:22:15,482 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 171 places, 169 transitions, 1623 flow. Second operand has 10 states, 10 states have (on average 10.3) internal successors, (103), 10 states have internal predecessors, (103), 0 states have call successors, (0), 0 states 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 01:22:15,482 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:22:15,482 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 38 [2024-06-28 01:22:15,482 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:22:15,991 INFO L124 PetriNetUnfolderBase]: 1805/3171 cut-off events. [2024-06-28 01:22:15,991 INFO L125 PetriNetUnfolderBase]: For 44537/44537 co-relation queries the response was YES. [2024-06-28 01:22:16,055 INFO L83 FinitePrefix]: Finished finitePrefix Result has 15163 conditions, 3171 events. 1805/3171 cut-off events. For 44537/44537 co-relation queries the response was YES. Maximal size of possible extension queue 184. Compared 20199 event pairs, 578 based on Foata normal form. 3/3095 useless extension candidates. Maximal degree in co-relation 15083. Up to 2447 conditions per place. [2024-06-28 01:22:16,062 INFO L140 encePairwiseOnDemand]: 26/38 looper letters, 173 selfloop transitions, 31 changer transitions 0/211 dead transitions. [2024-06-28 01:22:16,062 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 179 places, 211 transitions, 2373 flow [2024-06-28 01:22:16,063 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 01:22:16,063 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 01:22:16,063 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 165 transitions. [2024-06-28 01:22:16,063 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4824561403508772 [2024-06-28 01:22:16,063 INFO L175 Difference]: Start difference. First operand has 171 places, 169 transitions, 1623 flow. Second operand 9 states and 165 transitions. [2024-06-28 01:22:16,063 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 179 places, 211 transitions, 2373 flow [2024-06-28 01:22:16,146 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 172 places, 211 transitions, 2320 flow, removed 9 selfloop flow, removed 7 redundant places. [2024-06-28 01:22:16,148 INFO L231 Difference]: Finished difference. Result has 173 places, 173 transitions, 1693 flow [2024-06-28 01:22:16,149 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=1570, PETRI_DIFFERENCE_MINUEND_PLACES=164, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=169, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=27, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=142, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1693, PETRI_PLACES=173, PETRI_TRANSITIONS=173} [2024-06-28 01:22:16,149 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 131 predicate places. [2024-06-28 01:22:16,149 INFO L495 AbstractCegarLoop]: Abstraction has has 173 places, 173 transitions, 1693 flow [2024-06-28 01:22:16,149 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 10.3) internal successors, (103), 10 states have internal predecessors, (103), 0 states have call successors, (0), 0 states 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 01:22:16,150 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:22:16,150 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:22:16,150 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable41 [2024-06-28 01:22:16,150 INFO L420 AbstractCegarLoop]: === Iteration 43 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:22:16,151 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:22:16,151 INFO L85 PathProgramCache]: Analyzing trace with hash -1706543789, now seen corresponding path program 9 times [2024-06-28 01:22:16,151 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:22:16,151 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [971305618] [2024-06-28 01:22:16,151 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:22:16,152 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:22:16,157 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:22:16,734 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 01:22:16,734 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:22:16,736 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [971305618] [2024-06-28 01:22:16,737 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [971305618] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:22:16,737 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:22:16,737 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 01:22:16,737 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [326612279] [2024-06-28 01:22:16,737 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:22:16,737 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 01:22:16,738 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:22:16,739 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 01:22:16,739 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2024-06-28 01:22:16,811 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 38 [2024-06-28 01:22:16,811 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 173 places, 173 transitions, 1693 flow. Second operand has 10 states, 10 states have (on average 10.3) internal successors, (103), 10 states have internal predecessors, (103), 0 states have call successors, (0), 0 states 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 01:22:16,811 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:22:16,812 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 38 [2024-06-28 01:22:16,812 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:22:17,425 INFO L124 PetriNetUnfolderBase]: 1799/3150 cut-off events. [2024-06-28 01:22:17,425 INFO L125 PetriNetUnfolderBase]: For 44299/44299 co-relation queries the response was YES. [2024-06-28 01:22:17,437 INFO L83 FinitePrefix]: Finished finitePrefix Result has 15138 conditions, 3150 events. 1799/3150 cut-off events. For 44299/44299 co-relation queries the response was YES. Maximal size of possible extension queue 184. Compared 19959 event pairs, 572 based on Foata normal form. 3/3078 useless extension candidates. Maximal degree in co-relation 15057. Up to 2443 conditions per place. [2024-06-28 01:22:17,445 INFO L140 encePairwiseOnDemand]: 26/38 looper letters, 170 selfloop transitions, 33 changer transitions 0/210 dead transitions. [2024-06-28 01:22:17,445 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 181 places, 210 transitions, 2305 flow [2024-06-28 01:22:17,446 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 01:22:17,446 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 01:22:17,446 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 163 transitions. [2024-06-28 01:22:17,446 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4766081871345029 [2024-06-28 01:22:17,446 INFO L175 Difference]: Start difference. First operand has 173 places, 173 transitions, 1693 flow. Second operand 9 states and 163 transitions. [2024-06-28 01:22:17,446 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 181 places, 210 transitions, 2305 flow [2024-06-28 01:22:17,533 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 175 places, 210 transitions, 2213 flow, removed 13 selfloop flow, removed 6 redundant places. [2024-06-28 01:22:17,536 INFO L231 Difference]: Finished difference. Result has 176 places, 173 transitions, 1672 flow [2024-06-28 01:22:17,536 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=1601, PETRI_DIFFERENCE_MINUEND_PLACES=167, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=173, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=33, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=140, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1672, PETRI_PLACES=176, PETRI_TRANSITIONS=173} [2024-06-28 01:22:17,536 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 134 predicate places. [2024-06-28 01:22:17,537 INFO L495 AbstractCegarLoop]: Abstraction has has 176 places, 173 transitions, 1672 flow [2024-06-28 01:22:17,537 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 10.3) internal successors, (103), 10 states have internal predecessors, (103), 0 states have call successors, (0), 0 states 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 01:22:17,537 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:22:17,537 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:22:17,537 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable42 [2024-06-28 01:22:17,537 INFO L420 AbstractCegarLoop]: === Iteration 44 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:22:17,537 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:22:17,537 INFO L85 PathProgramCache]: Analyzing trace with hash 785639883, now seen corresponding path program 5 times [2024-06-28 01:22:17,537 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:22:17,537 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [876537346] [2024-06-28 01:22:17,538 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:22:17,538 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:22:17,543 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:22:18,143 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 01:22:18,143 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:22:18,143 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [876537346] [2024-06-28 01:22:18,143 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [876537346] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:22:18,143 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:22:18,143 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 01:22:18,144 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1157492678] [2024-06-28 01:22:18,144 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:22:18,144 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 01:22:18,144 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:22:18,144 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 01:22:18,145 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2024-06-28 01:22:18,220 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 38 [2024-06-28 01:22:18,220 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 176 places, 173 transitions, 1672 flow. Second operand has 10 states, 10 states have (on average 10.3) internal successors, (103), 10 states have internal predecessors, (103), 0 states have call successors, (0), 0 states 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 01:22:18,221 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:22:18,221 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 38 [2024-06-28 01:22:18,221 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:22:18,753 INFO L124 PetriNetUnfolderBase]: 1797/3161 cut-off events. [2024-06-28 01:22:18,753 INFO L125 PetriNetUnfolderBase]: For 42191/42191 co-relation queries the response was YES. [2024-06-28 01:22:18,766 INFO L83 FinitePrefix]: Finished finitePrefix Result has 15087 conditions, 3161 events. 1797/3161 cut-off events. For 42191/42191 co-relation queries the response was YES. Maximal size of possible extension queue 182. Compared 20076 event pairs, 667 based on Foata normal form. 1/3086 useless extension candidates. Maximal degree in co-relation 15005. Up to 2796 conditions per place. [2024-06-28 01:22:18,775 INFO L140 encePairwiseOnDemand]: 27/38 looper letters, 177 selfloop transitions, 17 changer transitions 0/201 dead transitions. [2024-06-28 01:22:18,775 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 184 places, 201 transitions, 2150 flow [2024-06-28 01:22:18,776 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 01:22:18,776 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 01:22:18,776 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 150 transitions. [2024-06-28 01:22:18,776 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.43859649122807015 [2024-06-28 01:22:18,776 INFO L175 Difference]: Start difference. First operand has 176 places, 173 transitions, 1672 flow. Second operand 9 states and 150 transitions. [2024-06-28 01:22:18,776 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 184 places, 201 transitions, 2150 flow [2024-06-28 01:22:18,872 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 177 places, 201 transitions, 2087 flow, removed 3 selfloop flow, removed 7 redundant places. [2024-06-28 01:22:18,875 INFO L231 Difference]: Finished difference. Result has 178 places, 173 transitions, 1648 flow [2024-06-28 01:22:18,875 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=1609, PETRI_DIFFERENCE_MINUEND_PLACES=169, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=173, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=17, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=156, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1648, PETRI_PLACES=178, PETRI_TRANSITIONS=173} [2024-06-28 01:22:18,875 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 136 predicate places. [2024-06-28 01:22:18,875 INFO L495 AbstractCegarLoop]: Abstraction has has 178 places, 173 transitions, 1648 flow [2024-06-28 01:22:18,878 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 10.3) internal successors, (103), 10 states have internal predecessors, (103), 0 states have call successors, (0), 0 states 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 01:22:18,878 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:22:18,878 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:22:18,879 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable43 [2024-06-28 01:22:18,879 INFO L420 AbstractCegarLoop]: === Iteration 45 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:22:18,879 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:22:18,879 INFO L85 PathProgramCache]: Analyzing trace with hash -721272405, now seen corresponding path program 10 times [2024-06-28 01:22:18,879 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:22:18,879 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1525450441] [2024-06-28 01:22:18,879 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:22:18,879 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:22:18,885 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:22:19,458 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 01:22:19,458 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:22:19,458 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1525450441] [2024-06-28 01:22:19,458 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1525450441] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:22:19,459 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:22:19,459 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 01:22:19,459 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [635324054] [2024-06-28 01:22:19,459 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:22:19,459 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 01:22:19,459 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:22:19,459 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 01:22:19,459 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2024-06-28 01:22:19,522 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 38 [2024-06-28 01:22:19,523 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 178 places, 173 transitions, 1648 flow. Second operand has 10 states, 10 states have (on average 10.3) internal successors, (103), 10 states have internal predecessors, (103), 0 states have call successors, (0), 0 states 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 01:22:19,523 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:22:19,523 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 38 [2024-06-28 01:22:19,523 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:22:20,109 INFO L124 PetriNetUnfolderBase]: 1791/3128 cut-off events. [2024-06-28 01:22:20,109 INFO L125 PetriNetUnfolderBase]: For 42661/42661 co-relation queries the response was YES. [2024-06-28 01:22:20,123 INFO L83 FinitePrefix]: Finished finitePrefix Result has 14778 conditions, 3128 events. 1791/3128 cut-off events. For 42661/42661 co-relation queries the response was YES. Maximal size of possible extension queue 182. Compared 19718 event pairs, 615 based on Foata normal form. 3/3061 useless extension candidates. Maximal degree in co-relation 14695. Up to 2436 conditions per place. [2024-06-28 01:22:20,132 INFO L140 encePairwiseOnDemand]: 26/38 looper letters, 172 selfloop transitions, 30 changer transitions 0/209 dead transitions. [2024-06-28 01:22:20,132 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 186 places, 209 transitions, 2174 flow [2024-06-28 01:22:20,135 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 01:22:20,135 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 01:22:20,135 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 164 transitions. [2024-06-28 01:22:20,135 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.47953216374269003 [2024-06-28 01:22:20,135 INFO L175 Difference]: Start difference. First operand has 178 places, 173 transitions, 1648 flow. Second operand 9 states and 164 transitions. [2024-06-28 01:22:20,135 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 186 places, 209 transitions, 2174 flow [2024-06-28 01:22:20,230 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 176 places, 209 transitions, 2080 flow, removed 5 selfloop flow, removed 10 redundant places. [2024-06-28 01:22:20,233 INFO L231 Difference]: Finished difference. Result has 177 places, 173 transitions, 1619 flow [2024-06-28 01:22:20,233 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=1554, PETRI_DIFFERENCE_MINUEND_PLACES=168, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=173, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=30, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=143, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1619, PETRI_PLACES=177, PETRI_TRANSITIONS=173} [2024-06-28 01:22:20,233 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 135 predicate places. [2024-06-28 01:22:20,233 INFO L495 AbstractCegarLoop]: Abstraction has has 177 places, 173 transitions, 1619 flow [2024-06-28 01:22:20,234 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 10.3) internal successors, (103), 10 states have internal predecessors, (103), 0 states have call successors, (0), 0 states 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 01:22:20,234 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:22:20,234 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:22:20,235 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable44 [2024-06-28 01:22:20,235 INFO L420 AbstractCegarLoop]: === Iteration 46 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:22:20,236 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:22:20,236 INFO L85 PathProgramCache]: Analyzing trace with hash 1989133293, now seen corresponding path program 11 times [2024-06-28 01:22:20,236 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:22:20,236 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [700734907] [2024-06-28 01:22:20,236 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:22:20,236 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:22:20,241 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:22:20,766 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 01:22:20,766 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:22:20,766 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [700734907] [2024-06-28 01:22:20,766 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [700734907] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:22:20,766 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:22:20,766 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 01:22:20,766 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [43987092] [2024-06-28 01:22:20,766 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:22:20,766 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 01:22:20,766 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:22:20,767 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 01:22:20,767 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2024-06-28 01:22:20,860 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 38 [2024-06-28 01:22:20,860 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 177 places, 173 transitions, 1619 flow. Second operand has 10 states, 10 states have (on average 10.3) internal successors, (103), 10 states have internal predecessors, (103), 0 states have call successors, (0), 0 states 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 01:22:20,860 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:22:20,860 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 38 [2024-06-28 01:22:20,860 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:22:21,787 INFO L124 PetriNetUnfolderBase]: 2708/5091 cut-off events. [2024-06-28 01:22:21,787 INFO L125 PetriNetUnfolderBase]: For 50848/50854 co-relation queries the response was YES. [2024-06-28 01:22:21,810 INFO L83 FinitePrefix]: Finished finitePrefix Result has 22435 conditions, 5091 events. 2708/5091 cut-off events. For 50848/50854 co-relation queries the response was YES. Maximal size of possible extension queue 311. Compared 37989 event pairs, 467 based on Foata normal form. 9/4908 useless extension candidates. Maximal degree in co-relation 22351. Up to 2933 conditions per place. [2024-06-28 01:22:21,826 INFO L140 encePairwiseOnDemand]: 24/38 looper letters, 250 selfloop transitions, 128 changer transitions 0/385 dead transitions. [2024-06-28 01:22:21,826 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 186 places, 385 transitions, 4327 flow [2024-06-28 01:22:21,827 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 01:22:21,827 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 01:22:21,827 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 194 transitions. [2024-06-28 01:22:21,827 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5105263157894737 [2024-06-28 01:22:21,828 INFO L175 Difference]: Start difference. First operand has 177 places, 173 transitions, 1619 flow. Second operand 10 states and 194 transitions. [2024-06-28 01:22:21,828 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 186 places, 385 transitions, 4327 flow [2024-06-28 01:22:21,942 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 177 places, 385 transitions, 4147 flow, removed 8 selfloop flow, removed 9 redundant places. [2024-06-28 01:22:21,945 INFO L231 Difference]: Finished difference. Result has 183 places, 291 transitions, 3220 flow [2024-06-28 01:22:21,946 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=1532, PETRI_DIFFERENCE_MINUEND_PLACES=168, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=173, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=43, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=90, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=3220, PETRI_PLACES=183, PETRI_TRANSITIONS=291} [2024-06-28 01:22:21,946 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 141 predicate places. [2024-06-28 01:22:21,946 INFO L495 AbstractCegarLoop]: Abstraction has has 183 places, 291 transitions, 3220 flow [2024-06-28 01:22:21,946 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 10.3) internal successors, (103), 10 states have internal predecessors, (103), 0 states have call successors, (0), 0 states 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 01:22:21,946 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:22:21,946 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:22:21,946 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable45 [2024-06-28 01:22:21,946 INFO L420 AbstractCegarLoop]: === Iteration 47 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:22:21,947 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:22:21,947 INFO L85 PathProgramCache]: Analyzing trace with hash -153209959, now seen corresponding path program 12 times [2024-06-28 01:22:21,947 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:22:21,947 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [994054008] [2024-06-28 01:22:21,947 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:22:21,947 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:22:21,952 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:22:22,547 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 01:22:22,547 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:22:22,547 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [994054008] [2024-06-28 01:22:22,547 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [994054008] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:22:22,547 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:22:22,547 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 01:22:22,548 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1604123199] [2024-06-28 01:22:22,548 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:22:22,548 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 01:22:22,548 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:22:22,548 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 01:22:22,548 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=62, Unknown=0, NotChecked=0, Total=90 [2024-06-28 01:22:22,624 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 38 [2024-06-28 01:22:22,624 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 183 places, 291 transitions, 3220 flow. Second operand has 10 states, 10 states have (on average 10.3) internal successors, (103), 10 states have internal predecessors, (103), 0 states have call successors, (0), 0 states 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 01:22:22,624 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:22:22,624 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 38 [2024-06-28 01:22:22,624 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:22:23,830 INFO L124 PetriNetUnfolderBase]: 3304/6338 cut-off events. [2024-06-28 01:22:23,831 INFO L125 PetriNetUnfolderBase]: For 60533/60533 co-relation queries the response was YES. [2024-06-28 01:22:23,855 INFO L83 FinitePrefix]: Finished finitePrefix Result has 31182 conditions, 6338 events. 3304/6338 cut-off events. For 60533/60533 co-relation queries the response was YES. Maximal size of possible extension queue 397. Compared 50503 event pairs, 717 based on Foata normal form. 3/6072 useless extension candidates. Maximal degree in co-relation 31092. Up to 2863 conditions per place. [2024-06-28 01:22:23,876 INFO L140 encePairwiseOnDemand]: 24/38 looper letters, 261 selfloop transitions, 224 changer transitions 0/492 dead transitions. [2024-06-28 01:22:23,877 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 192 places, 492 transitions, 6171 flow [2024-06-28 01:22:23,877 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 01:22:23,877 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 01:22:23,878 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 197 transitions. [2024-06-28 01:22:23,878 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5184210526315789 [2024-06-28 01:22:23,878 INFO L175 Difference]: Start difference. First operand has 183 places, 291 transitions, 3220 flow. Second operand 10 states and 197 transitions. [2024-06-28 01:22:23,878 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 192 places, 492 transitions, 6171 flow [2024-06-28 01:22:24,055 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 190 places, 492 transitions, 6058 flow, removed 51 selfloop flow, removed 2 redundant places. [2024-06-28 01:22:24,060 INFO L231 Difference]: Finished difference. Result has 196 places, 381 transitions, 5110 flow [2024-06-28 01:22:24,060 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=3171, PETRI_DIFFERENCE_MINUEND_PLACES=181, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=291, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=134, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=93, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=5110, PETRI_PLACES=196, PETRI_TRANSITIONS=381} [2024-06-28 01:22:24,061 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 154 predicate places. [2024-06-28 01:22:24,061 INFO L495 AbstractCegarLoop]: Abstraction has has 196 places, 381 transitions, 5110 flow [2024-06-28 01:22:24,061 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 10.3) internal successors, (103), 10 states have internal predecessors, (103), 0 states have call successors, (0), 0 states 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 01:22:24,061 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:22:24,061 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:22:24,061 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable46 [2024-06-28 01:22:24,061 INFO L420 AbstractCegarLoop]: === Iteration 48 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:22:24,061 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:22:24,061 INFO L85 PathProgramCache]: Analyzing trace with hash 1005938763, now seen corresponding path program 1 times [2024-06-28 01:22:24,062 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:22:24,062 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [226798887] [2024-06-28 01:22:24,062 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:22:24,062 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:22:24,068 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:22:24,107 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 01:22:24,107 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:22:24,107 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [226798887] [2024-06-28 01:22:24,107 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [226798887] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:22:24,107 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:22:24,108 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-06-28 01:22:24,108 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [791388255] [2024-06-28 01:22:24,108 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:22:24,108 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-06-28 01:22:24,108 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:22:24,108 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-06-28 01:22:24,109 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-06-28 01:22:24,119 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 17 out of 38 [2024-06-28 01:22:24,119 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 196 places, 381 transitions, 5110 flow. Second operand has 4 states, 4 states have (on average 19.5) internal successors, (78), 4 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:22:24,120 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:22:24,120 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 17 of 38 [2024-06-28 01:22:24,120 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:22:24,417 INFO L124 PetriNetUnfolderBase]: 853/1756 cut-off events. [2024-06-28 01:22:24,418 INFO L125 PetriNetUnfolderBase]: For 31062/31193 co-relation queries the response was YES. [2024-06-28 01:22:24,428 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9512 conditions, 1756 events. 853/1756 cut-off events. For 31062/31193 co-relation queries the response was YES. Maximal size of possible extension queue 181. Compared 11675 event pairs, 240 based on Foata normal form. 202/1827 useless extension candidates. Maximal degree in co-relation 9416. Up to 605 conditions per place. [2024-06-28 01:22:24,433 INFO L140 encePairwiseOnDemand]: 33/38 looper letters, 51 selfloop transitions, 93 changer transitions 0/350 dead transitions. [2024-06-28 01:22:24,433 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 199 places, 350 transitions, 4897 flow [2024-06-28 01:22:24,434 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-06-28 01:22:24,434 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-06-28 01:22:24,434 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 107 transitions. [2024-06-28 01:22:24,434 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.7039473684210527 [2024-06-28 01:22:24,434 INFO L175 Difference]: Start difference. First operand has 196 places, 381 transitions, 5110 flow. Second operand 4 states and 107 transitions. [2024-06-28 01:22:24,434 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 199 places, 350 transitions, 4897 flow [2024-06-28 01:22:24,498 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 174 places, 350 transitions, 4329 flow, removed 13 selfloop flow, removed 25 redundant places. [2024-06-28 01:22:24,502 INFO L231 Difference]: Finished difference. Result has 176 places, 335 transitions, 4343 flow [2024-06-28 01:22:24,502 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=3943, PETRI_DIFFERENCE_MINUEND_PLACES=171, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=332, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=90, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=239, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=4343, PETRI_PLACES=176, PETRI_TRANSITIONS=335} [2024-06-28 01:22:24,503 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 134 predicate places. [2024-06-28 01:22:24,503 INFO L495 AbstractCegarLoop]: Abstraction has has 176 places, 335 transitions, 4343 flow [2024-06-28 01:22:24,503 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 19.5) internal successors, (78), 4 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:22:24,503 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:22:24,503 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:22:24,503 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable47 [2024-06-28 01:22:24,503 INFO L420 AbstractCegarLoop]: === Iteration 49 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:22:24,503 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:22:24,503 INFO L85 PathProgramCache]: Analyzing trace with hash -1372152505, now seen corresponding path program 1 times [2024-06-28 01:22:24,504 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:22:24,504 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [942305671] [2024-06-28 01:22:24,504 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:22:24,504 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:22:24,510 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:22:25,317 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 01:22:25,317 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:22:25,317 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [942305671] [2024-06-28 01:22:25,317 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [942305671] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:22:25,317 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:22:25,317 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 01:22:25,317 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [452303789] [2024-06-28 01:22:25,317 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:22:25,318 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 01:22:25,318 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:22:25,318 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 01:22:25,318 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=78, Unknown=0, NotChecked=0, Total=110 [2024-06-28 01:22:25,397 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 38 [2024-06-28 01:22:25,397 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 176 places, 335 transitions, 4343 flow. Second operand has 11 states, 11 states have (on average 10.272727272727273) internal successors, (113), 11 states have internal predecessors, (113), 0 states have call successors, (0), 0 states 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 01:22:25,397 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:22:25,397 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 38 [2024-06-28 01:22:25,397 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:22:25,852 INFO L124 PetriNetUnfolderBase]: 1325/2338 cut-off events. [2024-06-28 01:22:25,852 INFO L125 PetriNetUnfolderBase]: For 44118/44118 co-relation queries the response was YES. [2024-06-28 01:22:25,862 INFO L83 FinitePrefix]: Finished finitePrefix Result has 14296 conditions, 2338 events. 1325/2338 cut-off events. For 44118/44118 co-relation queries the response was YES. Maximal size of possible extension queue 170. Compared 13166 event pairs, 242 based on Foata normal form. 1/2211 useless extension candidates. Maximal degree in co-relation 14210. Up to 1945 conditions per place. [2024-06-28 01:22:25,869 INFO L140 encePairwiseOnDemand]: 27/38 looper letters, 294 selfloop transitions, 66 changer transitions 0/368 dead transitions. [2024-06-28 01:22:25,869 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 185 places, 368 transitions, 5245 flow [2024-06-28 01:22:25,869 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 01:22:25,870 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 01:22:25,870 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 162 transitions. [2024-06-28 01:22:25,870 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4263157894736842 [2024-06-28 01:22:25,870 INFO L175 Difference]: Start difference. First operand has 176 places, 335 transitions, 4343 flow. Second operand 10 states and 162 transitions. [2024-06-28 01:22:25,870 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 185 places, 368 transitions, 5245 flow [2024-06-28 01:22:26,002 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 184 places, 368 transitions, 5243 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-06-28 01:22:26,007 INFO L231 Difference]: Finished difference. Result has 185 places, 337 transitions, 4504 flow [2024-06-28 01:22:26,007 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=4341, PETRI_DIFFERENCE_MINUEND_PLACES=175, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=335, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=64, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=269, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=4504, PETRI_PLACES=185, PETRI_TRANSITIONS=337} [2024-06-28 01:22:26,008 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 143 predicate places. [2024-06-28 01:22:26,008 INFO L495 AbstractCegarLoop]: Abstraction has has 185 places, 337 transitions, 4504 flow [2024-06-28 01:22:26,008 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 10.272727272727273) internal successors, (113), 11 states have internal predecessors, (113), 0 states have call successors, (0), 0 states 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 01:22:26,008 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:22:26,008 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:22:26,008 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable48 [2024-06-28 01:22:26,008 INFO L420 AbstractCegarLoop]: === Iteration 50 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:22:26,009 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:22:26,009 INFO L85 PathProgramCache]: Analyzing trace with hash -2027511349, now seen corresponding path program 2 times [2024-06-28 01:22:26,009 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:22:26,009 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [190341294] [2024-06-28 01:22:26,009 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:22:26,009 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:22:26,015 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:22:26,840 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:22:26,840 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:22:26,841 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [190341294] [2024-06-28 01:22:26,841 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [190341294] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:22:26,841 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:22:26,841 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 01:22:26,841 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1862671230] [2024-06-28 01:22:26,841 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:22:26,841 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 01:22:26,841 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:22:26,841 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 01:22:26,842 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2024-06-28 01:22:26,938 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 38 [2024-06-28 01:22:26,938 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 185 places, 337 transitions, 4504 flow. Second operand has 11 states, 11 states have (on average 10.272727272727273) internal successors, (113), 11 states have internal predecessors, (113), 0 states have call successors, (0), 0 states 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 01:22:26,938 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:22:26,938 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 38 [2024-06-28 01:22:26,938 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:22:27,534 INFO L124 PetriNetUnfolderBase]: 1331/2356 cut-off events. [2024-06-28 01:22:27,534 INFO L125 PetriNetUnfolderBase]: For 46126/46126 co-relation queries the response was YES. [2024-06-28 01:22:27,544 INFO L83 FinitePrefix]: Finished finitePrefix Result has 14677 conditions, 2356 events. 1331/2356 cut-off events. For 46126/46126 co-relation queries the response was YES. Maximal size of possible extension queue 181. Compared 13338 event pairs, 283 based on Foata normal form. 1/2228 useless extension candidates. Maximal degree in co-relation 14588. Up to 2104 conditions per place. [2024-06-28 01:22:27,551 INFO L140 encePairwiseOnDemand]: 27/38 looper letters, 329 selfloop transitions, 38 changer transitions 0/375 dead transitions. [2024-06-28 01:22:27,551 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 195 places, 375 transitions, 5434 flow [2024-06-28 01:22:27,551 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 01:22:27,551 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 01:22:27,552 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 175 transitions. [2024-06-28 01:22:27,552 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.41866028708133973 [2024-06-28 01:22:27,552 INFO L175 Difference]: Start difference. First operand has 185 places, 337 transitions, 4504 flow. Second operand 11 states and 175 transitions. [2024-06-28 01:22:27,552 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 195 places, 375 transitions, 5434 flow [2024-06-28 01:22:27,669 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 187 places, 375 transitions, 5291 flow, removed 7 selfloop flow, removed 8 redundant places. [2024-06-28 01:22:27,673 INFO L231 Difference]: Finished difference. Result has 188 places, 339 transitions, 4473 flow [2024-06-28 01:22:27,673 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=4361, PETRI_DIFFERENCE_MINUEND_PLACES=177, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=337, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=36, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=299, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=4473, PETRI_PLACES=188, PETRI_TRANSITIONS=339} [2024-06-28 01:22:27,674 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 146 predicate places. [2024-06-28 01:22:27,674 INFO L495 AbstractCegarLoop]: Abstraction has has 188 places, 339 transitions, 4473 flow [2024-06-28 01:22:27,674 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 10.272727272727273) internal successors, (113), 11 states have internal predecessors, (113), 0 states have call successors, (0), 0 states 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 01:22:27,674 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:22:27,674 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:22:27,674 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable49 [2024-06-28 01:22:27,674 INFO L420 AbstractCegarLoop]: === Iteration 51 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:22:27,674 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:22:27,675 INFO L85 PathProgramCache]: Analyzing trace with hash 1462509696, now seen corresponding path program 1 times [2024-06-28 01:22:27,675 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:22:27,675 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1672696306] [2024-06-28 01:22:27,675 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:22:27,675 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:22:27,680 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:22:28,369 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:22:28,369 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:22:28,369 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1672696306] [2024-06-28 01:22:28,369 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1672696306] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:22:28,369 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:22:28,369 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 01:22:28,369 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [438612504] [2024-06-28 01:22:28,369 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:22:28,370 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 01:22:28,370 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:22:28,370 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 01:22:28,370 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2024-06-28 01:22:28,443 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 38 [2024-06-28 01:22:28,444 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 188 places, 339 transitions, 4473 flow. Second operand has 11 states, 11 states have (on average 10.272727272727273) internal successors, (113), 11 states have internal predecessors, (113), 0 states have call successors, (0), 0 states 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 01:22:28,444 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:22:28,444 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 38 [2024-06-28 01:22:28,444 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:22:29,005 INFO L124 PetriNetUnfolderBase]: 1347/2381 cut-off events. [2024-06-28 01:22:29,005 INFO L125 PetriNetUnfolderBase]: For 49917/49917 co-relation queries the response was YES. [2024-06-28 01:22:29,015 INFO L83 FinitePrefix]: Finished finitePrefix Result has 14746 conditions, 2381 events. 1347/2381 cut-off events. For 49917/49917 co-relation queries the response was YES. Maximal size of possible extension queue 184. Compared 13532 event pairs, 282 based on Foata normal form. 3/2254 useless extension candidates. Maximal degree in co-relation 14656. Up to 2133 conditions per place. [2024-06-28 01:22:29,023 INFO L140 encePairwiseOnDemand]: 27/38 looper letters, 330 selfloop transitions, 36 changer transitions 0/374 dead transitions. [2024-06-28 01:22:29,023 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 197 places, 374 transitions, 5389 flow [2024-06-28 01:22:29,023 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 01:22:29,023 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 01:22:29,023 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 161 transitions. [2024-06-28 01:22:29,024 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4236842105263158 [2024-06-28 01:22:29,024 INFO L175 Difference]: Start difference. First operand has 188 places, 339 transitions, 4473 flow. Second operand 10 states and 161 transitions. [2024-06-28 01:22:29,024 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 197 places, 374 transitions, 5389 flow [2024-06-28 01:22:29,157 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 188 places, 374 transitions, 5299 flow, removed 9 selfloop flow, removed 9 redundant places. [2024-06-28 01:22:29,162 INFO L231 Difference]: Finished difference. Result has 189 places, 341 transitions, 4490 flow [2024-06-28 01:22:29,162 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=4383, PETRI_DIFFERENCE_MINUEND_PLACES=179, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=339, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=34, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=303, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=4490, PETRI_PLACES=189, PETRI_TRANSITIONS=341} [2024-06-28 01:22:29,162 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 147 predicate places. [2024-06-28 01:22:29,162 INFO L495 AbstractCegarLoop]: Abstraction has has 189 places, 341 transitions, 4490 flow [2024-06-28 01:22:29,163 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 10.272727272727273) internal successors, (113), 11 states have internal predecessors, (113), 0 states have call successors, (0), 0 states 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 01:22:29,163 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:22:29,163 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:22:29,163 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable50 [2024-06-28 01:22:29,163 INFO L420 AbstractCegarLoop]: === Iteration 52 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:22:29,163 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:22:29,163 INFO L85 PathProgramCache]: Analyzing trace with hash 1466228766, now seen corresponding path program 2 times [2024-06-28 01:22:29,163 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:22:29,163 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [178767294] [2024-06-28 01:22:29,164 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:22:29,164 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:22:29,169 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:22:29,811 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:22:29,811 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:22:29,811 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [178767294] [2024-06-28 01:22:29,811 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [178767294] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:22:29,811 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:22:29,811 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 01:22:29,811 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1654763233] [2024-06-28 01:22:29,811 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:22:29,812 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 01:22:29,812 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:22:29,812 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 01:22:29,812 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2024-06-28 01:22:29,874 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 38 [2024-06-28 01:22:29,874 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 189 places, 341 transitions, 4490 flow. Second operand has 11 states, 11 states have (on average 10.272727272727273) internal successors, (113), 11 states have internal predecessors, (113), 0 states have call successors, (0), 0 states 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 01:22:29,874 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:22:29,875 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 38 [2024-06-28 01:22:29,875 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:22:30,431 INFO L124 PetriNetUnfolderBase]: 1400/2452 cut-off events. [2024-06-28 01:22:30,432 INFO L125 PetriNetUnfolderBase]: For 58053/58053 co-relation queries the response was YES. [2024-06-28 01:22:30,443 INFO L83 FinitePrefix]: Finished finitePrefix Result has 15473 conditions, 2452 events. 1400/2452 cut-off events. For 58053/58053 co-relation queries the response was YES. Maximal size of possible extension queue 182. Compared 13941 event pairs, 169 based on Foata normal form. 3/2322 useless extension candidates. Maximal degree in co-relation 15382. Up to 951 conditions per place. [2024-06-28 01:22:30,450 INFO L140 encePairwiseOnDemand]: 26/38 looper letters, 208 selfloop transitions, 176 changer transitions 0/392 dead transitions. [2024-06-28 01:22:30,450 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 198 places, 392 transitions, 5762 flow [2024-06-28 01:22:30,451 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 01:22:30,451 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 01:22:30,451 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 182 transitions. [2024-06-28 01:22:30,451 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4789473684210526 [2024-06-28 01:22:30,451 INFO L175 Difference]: Start difference. First operand has 189 places, 341 transitions, 4490 flow. Second operand 10 states and 182 transitions. [2024-06-28 01:22:30,451 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 198 places, 392 transitions, 5762 flow [2024-06-28 01:22:30,592 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 190 places, 392 transitions, 5675 flow, removed 9 selfloop flow, removed 8 redundant places. [2024-06-28 01:22:30,597 INFO L231 Difference]: Finished difference. Result has 191 places, 347 transitions, 4854 flow [2024-06-28 01:22:30,597 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=4403, PETRI_DIFFERENCE_MINUEND_PLACES=181, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=341, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=172, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=169, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=4854, PETRI_PLACES=191, PETRI_TRANSITIONS=347} [2024-06-28 01:22:30,597 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 149 predicate places. [2024-06-28 01:22:30,597 INFO L495 AbstractCegarLoop]: Abstraction has has 191 places, 347 transitions, 4854 flow [2024-06-28 01:22:30,598 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 10.272727272727273) internal successors, (113), 11 states have internal predecessors, (113), 0 states have call successors, (0), 0 states 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 01:22:30,598 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:22:30,598 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:22:30,598 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable51 [2024-06-28 01:22:30,598 INFO L420 AbstractCegarLoop]: === Iteration 53 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:22:30,598 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:22:30,598 INFO L85 PathProgramCache]: Analyzing trace with hash 1466234346, now seen corresponding path program 3 times [2024-06-28 01:22:30,598 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:22:30,598 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1019921859] [2024-06-28 01:22:30,598 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:22:30,598 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:22:30,603 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:22:31,255 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 01:22:31,255 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:22:31,255 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1019921859] [2024-06-28 01:22:31,255 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1019921859] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:22:31,255 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:22:31,255 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 01:22:31,255 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [737745661] [2024-06-28 01:22:31,255 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:22:31,255 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 01:22:31,256 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:22:31,256 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 01:22:31,256 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2024-06-28 01:22:31,339 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 38 [2024-06-28 01:22:31,339 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 191 places, 347 transitions, 4854 flow. Second operand has 11 states, 11 states have (on average 10.272727272727273) internal successors, (113), 11 states have internal predecessors, (113), 0 states have call successors, (0), 0 states 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 01:22:31,339 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:22:31,339 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 38 [2024-06-28 01:22:31,339 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:22:31,900 INFO L124 PetriNetUnfolderBase]: 1394/2441 cut-off events. [2024-06-28 01:22:31,901 INFO L125 PetriNetUnfolderBase]: For 58523/58523 co-relation queries the response was YES. [2024-06-28 01:22:31,913 INFO L83 FinitePrefix]: Finished finitePrefix Result has 15860 conditions, 2441 events. 1394/2441 cut-off events. For 58523/58523 co-relation queries the response was YES. Maximal size of possible extension queue 180. Compared 13876 event pairs, 169 based on Foata normal form. 3/2311 useless extension candidates. Maximal degree in co-relation 15768. Up to 947 conditions per place. [2024-06-28 01:22:31,921 INFO L140 encePairwiseOnDemand]: 26/38 looper letters, 213 selfloop transitions, 170 changer transitions 0/391 dead transitions. [2024-06-28 01:22:31,922 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 200 places, 391 transitions, 5944 flow [2024-06-28 01:22:31,922 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 01:22:31,922 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 01:22:31,922 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 178 transitions. [2024-06-28 01:22:31,923 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.46842105263157896 [2024-06-28 01:22:31,923 INFO L175 Difference]: Start difference. First operand has 191 places, 347 transitions, 4854 flow. Second operand 10 states and 178 transitions. [2024-06-28 01:22:31,923 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 200 places, 391 transitions, 5944 flow [2024-06-28 01:22:32,083 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 195 places, 391 transitions, 5749 flow, removed 23 selfloop flow, removed 5 redundant places. [2024-06-28 01:22:32,088 INFO L231 Difference]: Finished difference. Result has 196 places, 347 transitions, 5014 flow [2024-06-28 01:22:32,088 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=4659, PETRI_DIFFERENCE_MINUEND_PLACES=186, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=347, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=170, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=177, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=5014, PETRI_PLACES=196, PETRI_TRANSITIONS=347} [2024-06-28 01:22:32,089 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 154 predicate places. [2024-06-28 01:22:32,089 INFO L495 AbstractCegarLoop]: Abstraction has has 196 places, 347 transitions, 5014 flow [2024-06-28 01:22:32,089 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 10.272727272727273) internal successors, (113), 11 states have internal predecessors, (113), 0 states have call successors, (0), 0 states 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 01:22:32,089 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:22:32,089 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:22:32,089 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable52 [2024-06-28 01:22:32,090 INFO L420 AbstractCegarLoop]: === Iteration 54 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:22:32,090 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:22:32,090 INFO L85 PathProgramCache]: Analyzing trace with hash 1610119296, now seen corresponding path program 4 times [2024-06-28 01:22:32,090 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:22:32,090 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1233166602] [2024-06-28 01:22:32,090 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:22:32,090 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:22:32,095 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:22:32,753 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 01:22:32,754 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:22:32,754 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1233166602] [2024-06-28 01:22:32,754 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1233166602] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:22:32,754 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:22:32,754 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 01:22:32,754 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [546620085] [2024-06-28 01:22:32,754 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:22:32,754 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 01:22:32,754 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:22:32,755 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 01:22:32,755 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2024-06-28 01:22:32,869 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 38 [2024-06-28 01:22:32,870 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 196 places, 347 transitions, 5014 flow. Second operand has 11 states, 11 states have (on average 10.272727272727273) internal successors, (113), 11 states have internal predecessors, (113), 0 states have call successors, (0), 0 states 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 01:22:32,870 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:22:32,870 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 38 [2024-06-28 01:22:32,870 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:22:33,435 INFO L124 PetriNetUnfolderBase]: 1432/2506 cut-off events. [2024-06-28 01:22:33,435 INFO L125 PetriNetUnfolderBase]: For 65616/65616 co-relation queries the response was YES. [2024-06-28 01:22:33,447 INFO L83 FinitePrefix]: Finished finitePrefix Result has 16865 conditions, 2506 events. 1432/2506 cut-off events. For 65616/65616 co-relation queries the response was YES. Maximal size of possible extension queue 186. Compared 14234 event pairs, 235 based on Foata normal form. 3/2374 useless extension candidates. Maximal degree in co-relation 16771. Up to 977 conditions per place. [2024-06-28 01:22:33,455 INFO L140 encePairwiseOnDemand]: 26/38 looper letters, 196 selfloop transitions, 189 changer transitions 0/393 dead transitions. [2024-06-28 01:22:33,456 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 205 places, 393 transitions, 6258 flow [2024-06-28 01:22:33,456 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 01:22:33,457 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 01:22:33,458 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 180 transitions. [2024-06-28 01:22:33,458 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.47368421052631576 [2024-06-28 01:22:33,458 INFO L175 Difference]: Start difference. First operand has 196 places, 347 transitions, 5014 flow. Second operand 10 states and 180 transitions. [2024-06-28 01:22:33,458 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 205 places, 393 transitions, 6258 flow [2024-06-28 01:22:33,631 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 196 places, 393 transitions, 5898 flow, removed 1 selfloop flow, removed 9 redundant places. [2024-06-28 01:22:33,636 INFO L231 Difference]: Finished difference. Result has 197 places, 351 transitions, 5105 flow [2024-06-28 01:22:33,636 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=4662, PETRI_DIFFERENCE_MINUEND_PLACES=187, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=347, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=185, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=162, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=5105, PETRI_PLACES=197, PETRI_TRANSITIONS=351} [2024-06-28 01:22:33,636 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 155 predicate places. [2024-06-28 01:22:33,636 INFO L495 AbstractCegarLoop]: Abstraction has has 197 places, 351 transitions, 5105 flow [2024-06-28 01:22:33,636 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 10.272727272727273) internal successors, (113), 11 states have internal predecessors, (113), 0 states have call successors, (0), 0 states 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 01:22:33,636 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:22:33,637 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:22:33,637 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable53 [2024-06-28 01:22:33,637 INFO L420 AbstractCegarLoop]: === Iteration 55 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:22:33,637 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:22:33,637 INFO L85 PathProgramCache]: Analyzing trace with hash 1906252463, now seen corresponding path program 3 times [2024-06-28 01:22:33,637 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:22:33,637 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [412077482] [2024-06-28 01:22:33,637 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:22:33,638 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:22:33,644 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:22:34,469 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 01:22:34,470 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:22:34,470 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [412077482] [2024-06-28 01:22:34,470 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [412077482] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:22:34,470 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:22:34,470 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 01:22:34,470 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [633648150] [2024-06-28 01:22:34,470 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:22:34,470 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 01:22:34,470 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:22:34,471 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 01:22:34,471 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=78, Unknown=0, NotChecked=0, Total=110 [2024-06-28 01:22:34,543 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 38 [2024-06-28 01:22:34,543 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 197 places, 351 transitions, 5105 flow. Second operand has 11 states, 11 states have (on average 10.272727272727273) internal successors, (113), 11 states have internal predecessors, (113), 0 states have call successors, (0), 0 states 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 01:22:34,543 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:22:34,543 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 38 [2024-06-28 01:22:34,543 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:22:35,056 INFO L124 PetriNetUnfolderBase]: 1438/2516 cut-off events. [2024-06-28 01:22:35,056 INFO L125 PetriNetUnfolderBase]: For 64883/64883 co-relation queries the response was YES. [2024-06-28 01:22:35,068 INFO L83 FinitePrefix]: Finished finitePrefix Result has 16879 conditions, 2516 events. 1438/2516 cut-off events. For 64883/64883 co-relation queries the response was YES. Maximal size of possible extension queue 186. Compared 14321 event pairs, 262 based on Foata normal form. 1/2381 useless extension candidates. Maximal degree in co-relation 16784. Up to 2120 conditions per place. [2024-06-28 01:22:35,077 INFO L140 encePairwiseOnDemand]: 27/38 looper letters, 304 selfloop transitions, 69 changer transitions 0/381 dead transitions. [2024-06-28 01:22:35,077 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 206 places, 381 transitions, 6025 flow [2024-06-28 01:22:35,077 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 01:22:35,077 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 01:22:35,078 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 160 transitions. [2024-06-28 01:22:35,078 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.42105263157894735 [2024-06-28 01:22:35,078 INFO L175 Difference]: Start difference. First operand has 197 places, 351 transitions, 5105 flow. Second operand 10 states and 160 transitions. [2024-06-28 01:22:35,078 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 206 places, 381 transitions, 6025 flow [2024-06-28 01:22:35,245 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 200 places, 381 transitions, 5751 flow, removed 10 selfloop flow, removed 6 redundant places. [2024-06-28 01:22:35,250 INFO L231 Difference]: Finished difference. Result has 201 places, 353 transitions, 5008 flow [2024-06-28 01:22:35,250 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=4831, PETRI_DIFFERENCE_MINUEND_PLACES=191, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=351, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=67, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=282, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=5008, PETRI_PLACES=201, PETRI_TRANSITIONS=353} [2024-06-28 01:22:35,250 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 159 predicate places. [2024-06-28 01:22:35,250 INFO L495 AbstractCegarLoop]: Abstraction has has 201 places, 353 transitions, 5008 flow [2024-06-28 01:22:35,250 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 10.272727272727273) internal successors, (113), 11 states have internal predecessors, (113), 0 states have call successors, (0), 0 states 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 01:22:35,250 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:22:35,250 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:22:35,250 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable54 [2024-06-28 01:22:35,250 INFO L420 AbstractCegarLoop]: === Iteration 56 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:22:35,251 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:22:35,251 INFO L85 PathProgramCache]: Analyzing trace with hash 1906258198, now seen corresponding path program 5 times [2024-06-28 01:22:35,251 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:22:35,251 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [375637449] [2024-06-28 01:22:35,251 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:22:35,251 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:22:35,256 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:22:35,909 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 01:22:35,909 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:22:35,909 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [375637449] [2024-06-28 01:22:35,909 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [375637449] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:22:35,909 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:22:35,909 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 01:22:35,910 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2112278502] [2024-06-28 01:22:35,910 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:22:35,910 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 01:22:35,910 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:22:35,910 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 01:22:35,910 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2024-06-28 01:22:35,981 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 38 [2024-06-28 01:22:35,981 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 201 places, 353 transitions, 5008 flow. Second operand has 11 states, 11 states have (on average 10.272727272727273) internal successors, (113), 11 states have internal predecessors, (113), 0 states have call successors, (0), 0 states 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 01:22:35,981 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:22:35,981 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 38 [2024-06-28 01:22:35,981 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:22:36,575 INFO L124 PetriNetUnfolderBase]: 1454/2540 cut-off events. [2024-06-28 01:22:36,576 INFO L125 PetriNetUnfolderBase]: For 68336/68336 co-relation queries the response was YES. [2024-06-28 01:22:36,588 INFO L83 FinitePrefix]: Finished finitePrefix Result has 16810 conditions, 2540 events. 1454/2540 cut-off events. For 68336/68336 co-relation queries the response was YES. Maximal size of possible extension queue 190. Compared 14464 event pairs, 229 based on Foata normal form. 3/2406 useless extension candidates. Maximal degree in co-relation 16714. Up to 999 conditions per place. [2024-06-28 01:22:36,596 INFO L140 encePairwiseOnDemand]: 26/38 looper letters, 215 selfloop transitions, 178 changer transitions 0/401 dead transitions. [2024-06-28 01:22:36,596 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 210 places, 401 transitions, 6270 flow [2024-06-28 01:22:36,597 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 01:22:36,597 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 01:22:36,597 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 181 transitions. [2024-06-28 01:22:36,597 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4763157894736842 [2024-06-28 01:22:36,597 INFO L175 Difference]: Start difference. First operand has 201 places, 353 transitions, 5008 flow. Second operand 10 states and 181 transitions. [2024-06-28 01:22:36,597 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 210 places, 401 transitions, 6270 flow [2024-06-28 01:22:36,763 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 202 places, 401 transitions, 6113 flow, removed 11 selfloop flow, removed 8 redundant places. [2024-06-28 01:22:36,768 INFO L231 Difference]: Finished difference. Result has 203 places, 355 transitions, 5252 flow [2024-06-28 01:22:36,768 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=4851, PETRI_DIFFERENCE_MINUEND_PLACES=193, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=353, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=176, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=177, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=5252, PETRI_PLACES=203, PETRI_TRANSITIONS=355} [2024-06-28 01:22:36,768 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 161 predicate places. [2024-06-28 01:22:36,768 INFO L495 AbstractCegarLoop]: Abstraction has has 203 places, 355 transitions, 5252 flow [2024-06-28 01:22:36,769 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 10.272727272727273) internal successors, (113), 11 states have internal predecessors, (113), 0 states have call successors, (0), 0 states 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 01:22:36,769 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:22:36,769 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:22:36,769 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable55 [2024-06-28 01:22:36,769 INFO L420 AbstractCegarLoop]: === Iteration 57 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:22:36,769 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:22:36,769 INFO L85 PathProgramCache]: Analyzing trace with hash 1610326686, now seen corresponding path program 6 times [2024-06-28 01:22:36,769 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:22:36,769 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2030165093] [2024-06-28 01:22:36,769 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:22:36,770 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:22:36,775 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:22:37,421 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 01:22:37,421 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:22:37,421 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2030165093] [2024-06-28 01:22:37,421 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2030165093] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:22:37,421 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:22:37,421 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 01:22:37,421 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2147017574] [2024-06-28 01:22:37,421 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:22:37,422 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 01:22:37,422 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:22:37,422 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 01:22:37,422 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2024-06-28 01:22:37,490 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 38 [2024-06-28 01:22:37,491 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 203 places, 355 transitions, 5252 flow. Second operand has 11 states, 11 states have (on average 10.272727272727273) internal successors, (113), 11 states have internal predecessors, (113), 0 states have call successors, (0), 0 states 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 01:22:37,491 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:22:37,491 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 38 [2024-06-28 01:22:37,491 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:22:38,039 INFO L124 PetriNetUnfolderBase]: 1448/2530 cut-off events. [2024-06-28 01:22:38,039 INFO L125 PetriNetUnfolderBase]: For 68619/68619 co-relation queries the response was YES. [2024-06-28 01:22:38,052 INFO L83 FinitePrefix]: Finished finitePrefix Result has 16983 conditions, 2530 events. 1448/2530 cut-off events. For 68619/68619 co-relation queries the response was YES. Maximal size of possible extension queue 189. Compared 14349 event pairs, 236 based on Foata normal form. 3/2396 useless extension candidates. Maximal degree in co-relation 16886. Up to 995 conditions per place. [2024-06-28 01:22:38,060 INFO L140 encePairwiseOnDemand]: 26/38 looper letters, 212 selfloop transitions, 176 changer transitions 0/396 dead transitions. [2024-06-28 01:22:38,060 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 212 places, 396 transitions, 6344 flow [2024-06-28 01:22:38,061 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 01:22:38,061 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 01:22:38,061 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 176 transitions. [2024-06-28 01:22:38,061 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4631578947368421 [2024-06-28 01:22:38,061 INFO L175 Difference]: Start difference. First operand has 203 places, 355 transitions, 5252 flow. Second operand 10 states and 176 transitions. [2024-06-28 01:22:38,061 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 212 places, 396 transitions, 6344 flow [2024-06-28 01:22:38,249 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 205 places, 396 transitions, 6001 flow, removed 15 selfloop flow, removed 7 redundant places. [2024-06-28 01:22:38,254 INFO L231 Difference]: Finished difference. Result has 206 places, 355 transitions, 5276 flow [2024-06-28 01:22:38,254 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=4909, PETRI_DIFFERENCE_MINUEND_PLACES=196, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=355, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=176, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=179, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=5276, PETRI_PLACES=206, PETRI_TRANSITIONS=355} [2024-06-28 01:22:38,254 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 164 predicate places. [2024-06-28 01:22:38,254 INFO L495 AbstractCegarLoop]: Abstraction has has 206 places, 355 transitions, 5276 flow [2024-06-28 01:22:38,255 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 10.272727272727273) internal successors, (113), 11 states have internal predecessors, (113), 0 states have call successors, (0), 0 states 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 01:22:38,255 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:22:38,255 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:22:38,255 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable56 [2024-06-28 01:22:38,255 INFO L420 AbstractCegarLoop]: === Iteration 58 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:22:38,255 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:22:38,255 INFO L85 PathProgramCache]: Analyzing trace with hash -1632421316, now seen corresponding path program 7 times [2024-06-28 01:22:38,255 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:22:38,255 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [532716359] [2024-06-28 01:22:38,255 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:22:38,255 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:22:38,260 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:22:38,900 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:22:38,901 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:22:38,901 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [532716359] [2024-06-28 01:22:38,901 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [532716359] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:22:38,901 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:22:38,901 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 01:22:38,901 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1219893320] [2024-06-28 01:22:38,901 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:22:38,901 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 01:22:38,901 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:22:38,902 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 01:22:38,902 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2024-06-28 01:22:38,993 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 38 [2024-06-28 01:22:38,994 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 206 places, 355 transitions, 5276 flow. Second operand has 11 states, 11 states have (on average 10.272727272727273) internal successors, (113), 11 states have internal predecessors, (113), 0 states have call successors, (0), 0 states 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 01:22:38,994 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:22:38,994 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 38 [2024-06-28 01:22:38,994 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:22:39,559 INFO L124 PetriNetUnfolderBase]: 1508/2627 cut-off events. [2024-06-28 01:22:39,559 INFO L125 PetriNetUnfolderBase]: For 80859/80859 co-relation queries the response was YES. [2024-06-28 01:22:39,572 INFO L83 FinitePrefix]: Finished finitePrefix Result has 17952 conditions, 2627 events. 1508/2627 cut-off events. For 80859/80859 co-relation queries the response was YES. Maximal size of possible extension queue 199. Compared 15037 event pairs, 269 based on Foata normal form. 3/2490 useless extension candidates. Maximal degree in co-relation 17854. Up to 1042 conditions per place. [2024-06-28 01:22:39,580 INFO L140 encePairwiseOnDemand]: 26/38 looper letters, 253 selfloop transitions, 153 changer transitions 0/414 dead transitions. [2024-06-28 01:22:39,580 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 215 places, 414 transitions, 6818 flow [2024-06-28 01:22:39,580 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 01:22:39,580 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 01:22:39,581 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 181 transitions. [2024-06-28 01:22:39,581 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4763157894736842 [2024-06-28 01:22:39,581 INFO L175 Difference]: Start difference. First operand has 206 places, 355 transitions, 5276 flow. Second operand 10 states and 181 transitions. [2024-06-28 01:22:39,581 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 215 places, 414 transitions, 6818 flow [2024-06-28 01:22:39,832 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 205 places, 414 transitions, 6399 flow, removed 1 selfloop flow, removed 10 redundant places. [2024-06-28 01:22:39,837 INFO L231 Difference]: Finished difference. Result has 206 places, 361 transitions, 5283 flow [2024-06-28 01:22:39,837 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=4869, PETRI_DIFFERENCE_MINUEND_PLACES=196, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=355, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=147, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=208, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=5283, PETRI_PLACES=206, PETRI_TRANSITIONS=361} [2024-06-28 01:22:39,837 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 164 predicate places. [2024-06-28 01:22:39,837 INFO L495 AbstractCegarLoop]: Abstraction has has 206 places, 361 transitions, 5283 flow [2024-06-28 01:22:39,837 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 10.272727272727273) internal successors, (113), 11 states have internal predecessors, (113), 0 states have call successors, (0), 0 states 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 01:22:39,837 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:22:39,837 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:22:39,838 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable57 [2024-06-28 01:22:39,838 INFO L420 AbstractCegarLoop]: === Iteration 59 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:22:39,838 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:22:39,838 INFO L85 PathProgramCache]: Analyzing trace with hash -1595224939, now seen corresponding path program 4 times [2024-06-28 01:22:39,838 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:22:39,838 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2125229091] [2024-06-28 01:22:39,839 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:22:39,839 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:22:39,845 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:22:40,649 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 01:22:40,649 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:22:40,649 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2125229091] [2024-06-28 01:22:40,649 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2125229091] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:22:40,649 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:22:40,649 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 01:22:40,649 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [446354908] [2024-06-28 01:22:40,649 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:22:40,650 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 01:22:40,650 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:22:40,650 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 01:22:40,650 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=78, Unknown=0, NotChecked=0, Total=110 [2024-06-28 01:22:40,722 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 38 [2024-06-28 01:22:40,722 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 206 places, 361 transitions, 5283 flow. Second operand has 11 states, 11 states have (on average 10.272727272727273) internal successors, (113), 11 states have internal predecessors, (113), 0 states have call successors, (0), 0 states 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 01:22:40,722 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:22:40,722 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 38 [2024-06-28 01:22:40,722 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:22:41,313 INFO L124 PetriNetUnfolderBase]: 1514/2634 cut-off events. [2024-06-28 01:22:41,313 INFO L125 PetriNetUnfolderBase]: For 79266/79266 co-relation queries the response was YES. [2024-06-28 01:22:41,325 INFO L83 FinitePrefix]: Finished finitePrefix Result has 17859 conditions, 2634 events. 1514/2634 cut-off events. For 79266/79266 co-relation queries the response was YES. Maximal size of possible extension queue 198. Compared 15038 event pairs, 276 based on Foata normal form. 1/2494 useless extension candidates. Maximal degree in co-relation 17760. Up to 2238 conditions per place. [2024-06-28 01:22:41,332 INFO L140 encePairwiseOnDemand]: 27/38 looper letters, 326 selfloop transitions, 56 changer transitions 0/390 dead transitions. [2024-06-28 01:22:41,332 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 215 places, 390 transitions, 6233 flow [2024-06-28 01:22:41,333 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 01:22:41,333 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 01:22:41,333 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 158 transitions. [2024-06-28 01:22:41,333 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.41578947368421054 [2024-06-28 01:22:41,333 INFO L175 Difference]: Start difference. First operand has 206 places, 361 transitions, 5283 flow. Second operand 10 states and 158 transitions. [2024-06-28 01:22:41,333 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 215 places, 390 transitions, 6233 flow [2024-06-28 01:22:41,551 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 210 places, 390 transitions, 6005 flow, removed 10 selfloop flow, removed 5 redundant places. [2024-06-28 01:22:41,556 INFO L231 Difference]: Finished difference. Result has 211 places, 363 transitions, 5210 flow [2024-06-28 01:22:41,556 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=5055, PETRI_DIFFERENCE_MINUEND_PLACES=201, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=361, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=54, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=305, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=5210, PETRI_PLACES=211, PETRI_TRANSITIONS=363} [2024-06-28 01:22:41,556 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 169 predicate places. [2024-06-28 01:22:41,557 INFO L495 AbstractCegarLoop]: Abstraction has has 211 places, 363 transitions, 5210 flow [2024-06-28 01:22:41,557 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 10.272727272727273) internal successors, (113), 11 states have internal predecessors, (113), 0 states have call successors, (0), 0 states 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 01:22:41,557 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:22:41,557 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:22:41,557 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable58 [2024-06-28 01:22:41,557 INFO L420 AbstractCegarLoop]: === Iteration 60 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:22:41,557 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:22:41,557 INFO L85 PathProgramCache]: Analyzing trace with hash -1632623126, now seen corresponding path program 8 times [2024-06-28 01:22:41,557 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:22:41,557 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [880796149] [2024-06-28 01:22:41,557 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:22:41,557 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:22:41,563 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:22:42,221 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 01:22:42,221 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:22:42,221 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [880796149] [2024-06-28 01:22:42,221 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [880796149] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:22:42,222 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:22:42,222 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 01:22:42,222 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1339515930] [2024-06-28 01:22:42,222 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:22:42,222 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 01:22:42,222 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:22:42,222 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 01:22:42,222 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2024-06-28 01:22:42,301 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 38 [2024-06-28 01:22:42,301 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 211 places, 363 transitions, 5210 flow. Second operand has 11 states, 11 states have (on average 10.272727272727273) internal successors, (113), 11 states have internal predecessors, (113), 0 states have call successors, (0), 0 states 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 01:22:42,301 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:22:42,301 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 38 [2024-06-28 01:22:42,302 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:22:42,939 INFO L124 PetriNetUnfolderBase]: 1530/2660 cut-off events. [2024-06-28 01:22:42,939 INFO L125 PetriNetUnfolderBase]: For 84688/84688 co-relation queries the response was YES. [2024-06-28 01:22:42,952 INFO L83 FinitePrefix]: Finished finitePrefix Result has 17745 conditions, 2660 events. 1530/2660 cut-off events. For 84688/84688 co-relation queries the response was YES. Maximal size of possible extension queue 203. Compared 15256 event pairs, 245 based on Foata normal form. 3/2521 useless extension candidates. Maximal degree in co-relation 17645. Up to 1064 conditions per place. [2024-06-28 01:22:42,960 INFO L140 encePairwiseOnDemand]: 26/38 looper letters, 254 selfloop transitions, 156 changer transitions 0/418 dead transitions. [2024-06-28 01:22:42,960 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 220 places, 418 transitions, 6696 flow [2024-06-28 01:22:42,960 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 01:22:42,960 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 01:22:42,961 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 180 transitions. [2024-06-28 01:22:42,961 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.47368421052631576 [2024-06-28 01:22:42,961 INFO L175 Difference]: Start difference. First operand has 211 places, 363 transitions, 5210 flow. Second operand 10 states and 180 transitions. [2024-06-28 01:22:42,961 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 220 places, 418 transitions, 6696 flow [2024-06-28 01:22:43,169 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 212 places, 418 transitions, 6561 flow, removed 13 selfloop flow, removed 8 redundant places. [2024-06-28 01:22:43,174 INFO L231 Difference]: Finished difference. Result has 213 places, 365 transitions, 5431 flow [2024-06-28 01:22:43,174 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=5075, PETRI_DIFFERENCE_MINUEND_PLACES=203, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=363, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=154, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=209, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=5431, PETRI_PLACES=213, PETRI_TRANSITIONS=365} [2024-06-28 01:22:43,175 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 171 predicate places. [2024-06-28 01:22:43,175 INFO L495 AbstractCegarLoop]: Abstraction has has 213 places, 365 transitions, 5431 flow [2024-06-28 01:22:43,175 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 10.272727272727273) internal successors, (113), 11 states have internal predecessors, (113), 0 states have call successors, (0), 0 states 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 01:22:43,175 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:22:43,175 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:22:43,175 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable59 [2024-06-28 01:22:43,176 INFO L420 AbstractCegarLoop]: === Iteration 61 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:22:43,176 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:22:43,176 INFO L85 PathProgramCache]: Analyzing trace with hash -1329138154, now seen corresponding path program 9 times [2024-06-28 01:22:43,176 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:22:43,176 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1797452116] [2024-06-28 01:22:43,176 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:22:43,176 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:22:43,181 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:22:43,815 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 01:22:43,815 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:22:43,815 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1797452116] [2024-06-28 01:22:43,815 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1797452116] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:22:43,815 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:22:43,815 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 01:22:43,815 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1956490350] [2024-06-28 01:22:43,815 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:22:43,815 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 01:22:43,816 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:22:43,816 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 01:22:43,816 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2024-06-28 01:22:43,893 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 38 [2024-06-28 01:22:43,893 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 213 places, 365 transitions, 5431 flow. Second operand has 11 states, 11 states have (on average 10.272727272727273) internal successors, (113), 11 states have internal predecessors, (113), 0 states have call successors, (0), 0 states 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 01:22:43,893 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:22:43,893 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 38 [2024-06-28 01:22:43,893 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:22:44,524 INFO L124 PetriNetUnfolderBase]: 1524/2648 cut-off events. [2024-06-28 01:22:44,525 INFO L125 PetriNetUnfolderBase]: For 84468/84468 co-relation queries the response was YES. [2024-06-28 01:22:44,539 INFO L83 FinitePrefix]: Finished finitePrefix Result has 17926 conditions, 2648 events. 1524/2648 cut-off events. For 84468/84468 co-relation queries the response was YES. Maximal size of possible extension queue 202. Compared 15153 event pairs, 261 based on Foata normal form. 3/2509 useless extension candidates. Maximal degree in co-relation 17825. Up to 1060 conditions per place. [2024-06-28 01:22:44,547 INFO L140 encePairwiseOnDemand]: 26/38 looper letters, 242 selfloop transitions, 164 changer transitions 0/414 dead transitions. [2024-06-28 01:22:44,547 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 222 places, 414 transitions, 6749 flow [2024-06-28 01:22:44,547 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 01:22:44,547 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 01:22:44,548 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 175 transitions. [2024-06-28 01:22:44,548 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4605263157894737 [2024-06-28 01:22:44,548 INFO L175 Difference]: Start difference. First operand has 213 places, 365 transitions, 5431 flow. Second operand 10 states and 175 transitions. [2024-06-28 01:22:44,548 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 222 places, 414 transitions, 6749 flow [2024-06-28 01:22:44,749 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 215 places, 414 transitions, 6436 flow, removed 15 selfloop flow, removed 7 redundant places. [2024-06-28 01:22:44,754 INFO L231 Difference]: Finished difference. Result has 216 places, 365 transitions, 5458 flow [2024-06-28 01:22:44,754 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=5118, PETRI_DIFFERENCE_MINUEND_PLACES=206, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=365, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=164, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=201, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=5458, PETRI_PLACES=216, PETRI_TRANSITIONS=365} [2024-06-28 01:22:44,755 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 174 predicate places. [2024-06-28 01:22:44,755 INFO L495 AbstractCegarLoop]: Abstraction has has 216 places, 365 transitions, 5458 flow [2024-06-28 01:22:44,755 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 10.272727272727273) internal successors, (113), 11 states have internal predecessors, (113), 0 states have call successors, (0), 0 states 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 01:22:44,755 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:22:44,755 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:22:44,755 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable60 [2024-06-28 01:22:44,755 INFO L420 AbstractCegarLoop]: === Iteration 62 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:22:44,755 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:22:44,756 INFO L85 PathProgramCache]: Analyzing trace with hash -1336495384, now seen corresponding path program 10 times [2024-06-28 01:22:44,756 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:22:44,756 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [202799277] [2024-06-28 01:22:44,756 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:22:44,756 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:22:44,761 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:22:45,405 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 01:22:45,405 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:22:45,405 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [202799277] [2024-06-28 01:22:45,406 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [202799277] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:22:45,406 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:22:45,406 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 01:22:45,406 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [975838364] [2024-06-28 01:22:45,406 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:22:45,406 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 01:22:45,406 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:22:45,406 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 01:22:45,406 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2024-06-28 01:22:45,487 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 38 [2024-06-28 01:22:45,487 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 216 places, 365 transitions, 5458 flow. Second operand has 11 states, 11 states have (on average 10.272727272727273) internal successors, (113), 11 states have internal predecessors, (113), 0 states have call successors, (0), 0 states 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 01:22:45,487 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:22:45,487 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 38 [2024-06-28 01:22:45,487 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:22:46,135 INFO L124 PetriNetUnfolderBase]: 1518/2642 cut-off events. [2024-06-28 01:22:46,135 INFO L125 PetriNetUnfolderBase]: For 80763/80763 co-relation queries the response was YES. [2024-06-28 01:22:46,149 INFO L83 FinitePrefix]: Finished finitePrefix Result has 17775 conditions, 2642 events. 1518/2642 cut-off events. For 80763/80763 co-relation queries the response was YES. Maximal size of possible extension queue 203. Compared 15138 event pairs, 243 based on Foata normal form. 3/2503 useless extension candidates. Maximal degree in co-relation 17673. Up to 1056 conditions per place. [2024-06-28 01:22:46,157 INFO L140 encePairwiseOnDemand]: 26/38 looper letters, 228 selfloop transitions, 176 changer transitions 0/412 dead transitions. [2024-06-28 01:22:46,157 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 225 places, 412 transitions, 6640 flow [2024-06-28 01:22:46,157 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 01:22:46,157 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 01:22:46,158 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 177 transitions. [2024-06-28 01:22:46,158 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.46578947368421053 [2024-06-28 01:22:46,158 INFO L175 Difference]: Start difference. First operand has 216 places, 365 transitions, 5458 flow. Second operand 10 states and 177 transitions. [2024-06-28 01:22:46,158 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 225 places, 412 transitions, 6640 flow [2024-06-28 01:22:46,411 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 215 places, 412 transitions, 6259 flow, removed 9 selfloop flow, removed 10 redundant places. [2024-06-28 01:22:46,416 INFO L231 Difference]: Finished difference. Result has 216 places, 365 transitions, 5434 flow [2024-06-28 01:22:46,417 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=5077, PETRI_DIFFERENCE_MINUEND_PLACES=206, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=365, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=176, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=189, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=5434, PETRI_PLACES=216, PETRI_TRANSITIONS=365} [2024-06-28 01:22:46,417 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 174 predicate places. [2024-06-28 01:22:46,417 INFO L495 AbstractCegarLoop]: Abstraction has has 216 places, 365 transitions, 5434 flow [2024-06-28 01:22:46,417 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 10.272727272727273) internal successors, (113), 11 states have internal predecessors, (113), 0 states have call successors, (0), 0 states 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 01:22:46,417 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:22:46,417 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:22:46,417 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable61 [2024-06-28 01:22:46,417 INFO L420 AbstractCegarLoop]: === Iteration 63 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:22:46,418 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:22:46,418 INFO L85 PathProgramCache]: Analyzing trace with hash -1587590507, now seen corresponding path program 1 times [2024-06-28 01:22:46,418 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:22:46,418 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1132476541] [2024-06-28 01:22:46,418 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:22:46,418 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:22:46,427 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:22:47,559 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 01:22:47,559 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:22:47,559 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1132476541] [2024-06-28 01:22:47,559 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1132476541] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:22:47,559 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:22:47,559 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 01:22:47,559 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1741793680] [2024-06-28 01:22:47,559 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:22:47,559 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 01:22:47,560 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:22:47,560 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 01:22:47,560 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2024-06-28 01:22:47,681 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 38 [2024-06-28 01:22:47,681 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 216 places, 365 transitions, 5434 flow. Second operand has 11 states, 11 states have (on average 11.272727272727273) internal successors, (124), 11 states have internal predecessors, (124), 0 states have call successors, (0), 0 states 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 01:22:47,681 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:22:47,681 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 38 [2024-06-28 01:22:47,681 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:22:48,334 INFO L124 PetriNetUnfolderBase]: 1341/2381 cut-off events. [2024-06-28 01:22:48,334 INFO L125 PetriNetUnfolderBase]: For 88080/88180 co-relation queries the response was YES. [2024-06-28 01:22:48,346 INFO L83 FinitePrefix]: Finished finitePrefix Result has 16283 conditions, 2381 events. 1341/2381 cut-off events. For 88080/88180 co-relation queries the response was YES. Maximal size of possible extension queue 192. Compared 13736 event pairs, 200 based on Foata normal form. 18/2237 useless extension candidates. Maximal degree in co-relation 16180. Up to 2009 conditions per place. [2024-06-28 01:22:48,354 INFO L140 encePairwiseOnDemand]: 29/38 looper letters, 320 selfloop transitions, 42 changer transitions 0/392 dead transitions. [2024-06-28 01:22:48,354 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 224 places, 392 transitions, 6280 flow [2024-06-28 01:22:48,355 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 01:22:48,355 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 01:22:48,355 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 155 transitions. [2024-06-28 01:22:48,355 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45321637426900585 [2024-06-28 01:22:48,356 INFO L175 Difference]: Start difference. First operand has 216 places, 365 transitions, 5434 flow. Second operand 9 states and 155 transitions. [2024-06-28 01:22:48,356 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 224 places, 392 transitions, 6280 flow [2024-06-28 01:22:48,553 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 215 places, 392 transitions, 5912 flow, removed 1 selfloop flow, removed 9 redundant places. [2024-06-28 01:22:48,558 INFO L231 Difference]: Finished difference. Result has 217 places, 368 transitions, 5192 flow [2024-06-28 01:22:48,559 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=5066, PETRI_DIFFERENCE_MINUEND_PLACES=207, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=365, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=39, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=323, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=5192, PETRI_PLACES=217, PETRI_TRANSITIONS=368} [2024-06-28 01:22:48,559 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 175 predicate places. [2024-06-28 01:22:48,559 INFO L495 AbstractCegarLoop]: Abstraction has has 217 places, 368 transitions, 5192 flow [2024-06-28 01:22:48,559 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 11.272727272727273) internal successors, (124), 11 states have internal predecessors, (124), 0 states have call successors, (0), 0 states 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 01:22:48,559 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:22:48,559 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:22:48,559 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable62 [2024-06-28 01:22:48,559 INFO L420 AbstractCegarLoop]: === Iteration 64 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:22:48,560 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:22:48,560 INFO L85 PathProgramCache]: Analyzing trace with hash -191616274, now seen corresponding path program 11 times [2024-06-28 01:22:48,560 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:22:48,560 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1420122743] [2024-06-28 01:22:48,560 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:22:48,560 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:22:48,565 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:22:49,228 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:22:49,228 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:22:49,228 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1420122743] [2024-06-28 01:22:49,228 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1420122743] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:22:49,228 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:22:49,229 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 01:22:49,229 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [310161120] [2024-06-28 01:22:49,229 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:22:49,229 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 01:22:49,229 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:22:49,229 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 01:22:49,229 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=77, Unknown=0, NotChecked=0, Total=110 [2024-06-28 01:22:49,311 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 38 [2024-06-28 01:22:49,311 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 217 places, 368 transitions, 5192 flow. Second operand has 11 states, 11 states have (on average 10.272727272727273) internal successors, (113), 11 states have internal predecessors, (113), 0 states have call successors, (0), 0 states 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 01:22:49,311 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:22:49,311 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 38 [2024-06-28 01:22:49,311 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:22:50,011 INFO L124 PetriNetUnfolderBase]: 1573/2741 cut-off events. [2024-06-28 01:22:50,012 INFO L125 PetriNetUnfolderBase]: For 88688/88688 co-relation queries the response was YES. [2024-06-28 01:22:50,025 INFO L83 FinitePrefix]: Finished finitePrefix Result has 17961 conditions, 2741 events. 1573/2741 cut-off events. For 88688/88688 co-relation queries the response was YES. Maximal size of possible extension queue 208. Compared 15847 event pairs, 374 based on Foata normal form. 3/2597 useless extension candidates. Maximal degree in co-relation 17856. Up to 2225 conditions per place. [2024-06-28 01:22:50,034 INFO L140 encePairwiseOnDemand]: 26/38 looper letters, 354 selfloop transitions, 54 changer transitions 0/416 dead transitions. [2024-06-28 01:22:50,034 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 226 places, 416 transitions, 6566 flow [2024-06-28 01:22:50,035 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 01:22:50,035 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 01:22:50,035 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 167 transitions. [2024-06-28 01:22:50,035 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4394736842105263 [2024-06-28 01:22:50,035 INFO L175 Difference]: Start difference. First operand has 217 places, 368 transitions, 5192 flow. Second operand 10 states and 167 transitions. [2024-06-28 01:22:50,036 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 226 places, 416 transitions, 6566 flow [2024-06-28 01:22:50,325 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 220 places, 416 transitions, 6476 flow, removed 7 selfloop flow, removed 6 redundant places. [2024-06-28 01:22:50,330 INFO L231 Difference]: Finished difference. Result has 221 places, 372 transitions, 5287 flow [2024-06-28 01:22:50,330 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=5102, PETRI_DIFFERENCE_MINUEND_PLACES=211, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=368, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=50, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=318, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=5287, PETRI_PLACES=221, PETRI_TRANSITIONS=372} [2024-06-28 01:22:50,331 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 179 predicate places. [2024-06-28 01:22:50,331 INFO L495 AbstractCegarLoop]: Abstraction has has 221 places, 372 transitions, 5287 flow [2024-06-28 01:22:50,331 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 10.272727272727273) internal successors, (113), 11 states have internal predecessors, (113), 0 states have call successors, (0), 0 states 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 01:22:50,331 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:22:50,331 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:22:50,331 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable63 [2024-06-28 01:22:50,331 INFO L420 AbstractCegarLoop]: === Iteration 65 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:22:50,331 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:22:50,332 INFO L85 PathProgramCache]: Analyzing trace with hash -1355620177, now seen corresponding path program 2 times [2024-06-28 01:22:50,332 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:22:50,332 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [528045098] [2024-06-28 01:22:50,332 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:22:50,332 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:22:50,341 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:22:51,243 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 01:22:51,243 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:22:51,244 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [528045098] [2024-06-28 01:22:51,244 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [528045098] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:22:51,244 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:22:51,244 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 01:22:51,244 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [326538220] [2024-06-28 01:22:51,244 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:22:51,244 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 01:22:51,244 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:22:51,244 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 01:22:51,245 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2024-06-28 01:22:51,354 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 38 [2024-06-28 01:22:51,355 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 221 places, 372 transitions, 5287 flow. Second operand has 11 states, 11 states have (on average 11.272727272727273) internal successors, (124), 11 states have internal predecessors, (124), 0 states have call successors, (0), 0 states 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 01:22:51,355 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:22:51,355 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 38 [2024-06-28 01:22:51,355 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:22:51,961 INFO L124 PetriNetUnfolderBase]: 1396/2484 cut-off events. [2024-06-28 01:22:51,961 INFO L125 PetriNetUnfolderBase]: For 98646/98744 co-relation queries the response was YES. [2024-06-28 01:22:51,975 INFO L83 FinitePrefix]: Finished finitePrefix Result has 16611 conditions, 2484 events. 1396/2484 cut-off events. For 98646/98744 co-relation queries the response was YES. Maximal size of possible extension queue 202. Compared 14536 event pairs, 254 based on Foata normal form. 20/2344 useless extension candidates. Maximal degree in co-relation 16505. Up to 2161 conditions per place. [2024-06-28 01:22:51,983 INFO L140 encePairwiseOnDemand]: 29/38 looper letters, 340 selfloop transitions, 26 changer transitions 0/396 dead transitions. [2024-06-28 01:22:51,983 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 229 places, 396 transitions, 6135 flow [2024-06-28 01:22:51,983 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 01:22:51,984 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 01:22:51,984 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 150 transitions. [2024-06-28 01:22:51,984 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.43859649122807015 [2024-06-28 01:22:51,984 INFO L175 Difference]: Start difference. First operand has 221 places, 372 transitions, 5287 flow. Second operand 9 states and 150 transitions. [2024-06-28 01:22:51,984 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 229 places, 396 transitions, 6135 flow [2024-06-28 01:22:52,224 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 222 places, 396 transitions, 6001 flow, removed 10 selfloop flow, removed 7 redundant places. [2024-06-28 01:22:52,229 INFO L231 Difference]: Finished difference. Result has 224 places, 375 transitions, 5251 flow [2024-06-28 01:22:52,230 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=5153, PETRI_DIFFERENCE_MINUEND_PLACES=214, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=372, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=23, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=346, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=5251, PETRI_PLACES=224, PETRI_TRANSITIONS=375} [2024-06-28 01:22:52,230 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 182 predicate places. [2024-06-28 01:22:52,230 INFO L495 AbstractCegarLoop]: Abstraction has has 224 places, 375 transitions, 5251 flow [2024-06-28 01:22:52,230 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 11.272727272727273) internal successors, (124), 11 states have internal predecessors, (124), 0 states have call successors, (0), 0 states 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 01:22:52,230 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:22:52,231 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:22:52,231 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable64 [2024-06-28 01:22:52,231 INFO L420 AbstractCegarLoop]: === Iteration 66 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:22:52,231 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:22:52,231 INFO L85 PathProgramCache]: Analyzing trace with hash 711306748, now seen corresponding path program 12 times [2024-06-28 01:22:52,231 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:22:52,231 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2007619583] [2024-06-28 01:22:52,231 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:22:52,232 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:22:52,237 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:22:52,908 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 01:22:52,909 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:22:52,909 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2007619583] [2024-06-28 01:22:52,909 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2007619583] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:22:52,909 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:22:52,909 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 01:22:52,909 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [386881634] [2024-06-28 01:22:52,909 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:22:52,909 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 01:22:52,909 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:22:52,910 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 01:22:52,910 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=77, Unknown=0, NotChecked=0, Total=110 [2024-06-28 01:22:52,998 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 38 [2024-06-28 01:22:52,998 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 224 places, 375 transitions, 5251 flow. Second operand has 11 states, 11 states have (on average 10.272727272727273) internal successors, (113), 11 states have internal predecessors, (113), 0 states have call successors, (0), 0 states 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 01:22:52,998 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:22:52,998 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 38 [2024-06-28 01:22:52,998 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:22:53,652 INFO L124 PetriNetUnfolderBase]: 1606/2807 cut-off events. [2024-06-28 01:22:53,652 INFO L125 PetriNetUnfolderBase]: For 93019/93019 co-relation queries the response was YES. [2024-06-28 01:22:53,667 INFO L83 FinitePrefix]: Finished finitePrefix Result has 18228 conditions, 2807 events. 1606/2807 cut-off events. For 93019/93019 co-relation queries the response was YES. Maximal size of possible extension queue 212. Compared 16337 event pairs, 370 based on Foata normal form. 3/2659 useless extension candidates. Maximal degree in co-relation 18120. Up to 2269 conditions per place. [2024-06-28 01:22:53,676 INFO L140 encePairwiseOnDemand]: 26/38 looper letters, 345 selfloop transitions, 61 changer transitions 0/414 dead transitions. [2024-06-28 01:22:53,676 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 233 places, 414 transitions, 6535 flow [2024-06-28 01:22:53,677 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 01:22:53,677 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 01:22:53,677 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 166 transitions. [2024-06-28 01:22:53,677 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4368421052631579 [2024-06-28 01:22:53,677 INFO L175 Difference]: Start difference. First operand has 224 places, 375 transitions, 5251 flow. Second operand 10 states and 166 transitions. [2024-06-28 01:22:53,677 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 233 places, 414 transitions, 6535 flow [2024-06-28 01:22:53,961 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 227 places, 414 transitions, 6472 flow, removed 9 selfloop flow, removed 6 redundant places. [2024-06-28 01:22:53,966 INFO L231 Difference]: Finished difference. Result has 228 places, 377 transitions, 5351 flow [2024-06-28 01:22:53,966 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=5188, PETRI_DIFFERENCE_MINUEND_PLACES=218, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=375, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=59, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=316, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=5351, PETRI_PLACES=228, PETRI_TRANSITIONS=377} [2024-06-28 01:22:53,975 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 186 predicate places. [2024-06-28 01:22:53,975 INFO L495 AbstractCegarLoop]: Abstraction has has 228 places, 377 transitions, 5351 flow [2024-06-28 01:22:53,975 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 10.272727272727273) internal successors, (113), 11 states have internal predecessors, (113), 0 states have call successors, (0), 0 states 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 01:22:53,975 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:22:53,975 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:22:53,975 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable65 [2024-06-28 01:22:53,975 INFO L420 AbstractCegarLoop]: === Iteration 67 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:22:53,975 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:22:53,975 INFO L85 PathProgramCache]: Analyzing trace with hash 711104938, now seen corresponding path program 13 times [2024-06-28 01:22:53,975 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:22:53,976 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1612366309] [2024-06-28 01:22:53,976 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:22:53,976 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:22:53,981 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:22:54,619 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 01:22:54,620 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:22:54,620 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1612366309] [2024-06-28 01:22:54,620 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1612366309] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:22:54,620 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:22:54,620 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 01:22:54,620 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [129797962] [2024-06-28 01:22:54,620 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:22:54,620 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 01:22:54,620 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:22:54,620 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 01:22:54,621 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=77, Unknown=0, NotChecked=0, Total=110 [2024-06-28 01:22:54,709 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 38 [2024-06-28 01:22:54,709 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 228 places, 377 transitions, 5351 flow. Second operand has 11 states, 11 states have (on average 10.272727272727273) internal successors, (113), 11 states have internal predecessors, (113), 0 states have call successors, (0), 0 states 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 01:22:54,709 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:22:54,709 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 38 [2024-06-28 01:22:54,709 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:22:55,357 INFO L124 PetriNetUnfolderBase]: 1622/2832 cut-off events. [2024-06-28 01:22:55,357 INFO L125 PetriNetUnfolderBase]: For 96350/96350 co-relation queries the response was YES. [2024-06-28 01:22:55,372 INFO L83 FinitePrefix]: Finished finitePrefix Result has 18492 conditions, 2832 events. 1622/2832 cut-off events. For 96350/96350 co-relation queries the response was YES. Maximal size of possible extension queue 214. Compared 16529 event pairs, 351 based on Foata normal form. 3/2683 useless extension candidates. Maximal degree in co-relation 18383. Up to 2282 conditions per place. [2024-06-28 01:22:55,379 INFO L140 encePairwiseOnDemand]: 26/38 looper letters, 343 selfloop transitions, 65 changer transitions 0/416 dead transitions. [2024-06-28 01:22:55,380 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 237 places, 416 transitions, 6647 flow [2024-06-28 01:22:55,380 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 01:22:55,380 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 01:22:55,380 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 165 transitions. [2024-06-28 01:22:55,380 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4342105263157895 [2024-06-28 01:22:55,380 INFO L175 Difference]: Start difference. First operand has 228 places, 377 transitions, 5351 flow. Second operand 10 states and 165 transitions. [2024-06-28 01:22:55,380 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 237 places, 416 transitions, 6647 flow [2024-06-28 01:22:55,676 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 229 places, 416 transitions, 6428 flow, removed 8 selfloop flow, removed 8 redundant places. [2024-06-28 01:22:55,681 INFO L231 Difference]: Finished difference. Result has 230 places, 379 transitions, 5307 flow [2024-06-28 01:22:55,681 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=5138, PETRI_DIFFERENCE_MINUEND_PLACES=220, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=377, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=63, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=314, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=5307, PETRI_PLACES=230, PETRI_TRANSITIONS=379} [2024-06-28 01:22:55,682 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 188 predicate places. [2024-06-28 01:22:55,682 INFO L495 AbstractCegarLoop]: Abstraction has has 230 places, 379 transitions, 5307 flow [2024-06-28 01:22:55,682 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 10.272727272727273) internal successors, (113), 11 states have internal predecessors, (113), 0 states have call successors, (0), 0 states 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 01:22:55,682 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:22:55,682 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:22:55,682 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable66 [2024-06-28 01:22:55,682 INFO L420 AbstractCegarLoop]: === Iteration 68 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:22:55,682 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:22:55,682 INFO L85 PathProgramCache]: Analyzing trace with hash -2127792893, now seen corresponding path program 3 times [2024-06-28 01:22:55,682 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:22:55,682 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [688898538] [2024-06-28 01:22:55,682 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:22:55,683 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:22:55,690 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:22:56,672 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 01:22:56,672 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:22:56,672 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [688898538] [2024-06-28 01:22:56,672 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [688898538] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:22:56,672 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:22:56,673 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 01:22:56,673 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [403597156] [2024-06-28 01:22:56,673 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:22:56,673 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 01:22:56,673 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:22:56,673 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 01:22:56,673 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2024-06-28 01:22:56,766 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 38 [2024-06-28 01:22:56,767 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 230 places, 379 transitions, 5307 flow. Second operand has 11 states, 11 states have (on average 11.272727272727273) internal successors, (124), 11 states have internal predecessors, (124), 0 states have call successors, (0), 0 states 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 01:22:56,767 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:22:56,767 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 38 [2024-06-28 01:22:56,767 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:22:57,421 INFO L124 PetriNetUnfolderBase]: 1445/2586 cut-off events. [2024-06-28 01:22:57,421 INFO L125 PetriNetUnfolderBase]: For 104565/104645 co-relation queries the response was YES. [2024-06-28 01:22:57,435 INFO L83 FinitePrefix]: Finished finitePrefix Result has 17156 conditions, 2586 events. 1445/2586 cut-off events. For 104565/104645 co-relation queries the response was YES. Maximal size of possible extension queue 208. Compared 15349 event pairs, 257 based on Foata normal form. 18/2439 useless extension candidates. Maximal degree in co-relation 17046. Up to 2261 conditions per place. [2024-06-28 01:22:57,443 INFO L140 encePairwiseOnDemand]: 29/38 looper letters, 356 selfloop transitions, 14 changer transitions 0/400 dead transitions. [2024-06-28 01:22:57,443 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 238 places, 400 transitions, 6137 flow [2024-06-28 01:22:57,443 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 01:22:57,443 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 01:22:57,443 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 147 transitions. [2024-06-28 01:22:57,444 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4298245614035088 [2024-06-28 01:22:57,444 INFO L175 Difference]: Start difference. First operand has 230 places, 379 transitions, 5307 flow. Second operand 9 states and 147 transitions. [2024-06-28 01:22:57,444 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 238 places, 400 transitions, 6137 flow [2024-06-28 01:22:57,720 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 230 places, 400 transitions, 5920 flow, removed 8 selfloop flow, removed 8 redundant places. [2024-06-28 01:22:57,725 INFO L231 Difference]: Finished difference. Result has 231 places, 380 transitions, 5138 flow [2024-06-28 01:22:57,726 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=5090, PETRI_DIFFERENCE_MINUEND_PLACES=222, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=379, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=13, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=365, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=5138, PETRI_PLACES=231, PETRI_TRANSITIONS=380} [2024-06-28 01:22:57,726 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 189 predicate places. [2024-06-28 01:22:57,726 INFO L495 AbstractCegarLoop]: Abstraction has has 231 places, 380 transitions, 5138 flow [2024-06-28 01:22:57,726 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 11.272727272727273) internal successors, (124), 11 states have internal predecessors, (124), 0 states have call successors, (0), 0 states 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 01:22:57,726 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:22:57,726 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:22:57,727 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable67 [2024-06-28 01:22:57,727 INFO L420 AbstractCegarLoop]: === Iteration 69 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:22:57,727 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:22:57,727 INFO L85 PathProgramCache]: Analyzing trace with hash 968084305, now seen corresponding path program 4 times [2024-06-28 01:22:57,727 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:22:57,727 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [692503035] [2024-06-28 01:22:57,727 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:22:57,728 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:22:57,738 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:22:58,835 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 01:22:58,835 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:22:58,835 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [692503035] [2024-06-28 01:22:58,835 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [692503035] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:22:58,835 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:22:58,835 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 01:22:58,835 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1921418403] [2024-06-28 01:22:58,835 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:22:58,836 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 01:22:58,836 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:22:58,836 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 01:22:58,836 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2024-06-28 01:22:58,928 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 38 [2024-06-28 01:22:58,928 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 231 places, 380 transitions, 5138 flow. Second operand has 11 states, 11 states have (on average 11.272727272727273) internal successors, (124), 11 states have internal predecessors, (124), 0 states have call successors, (0), 0 states 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 01:22:58,928 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:22:58,928 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 38 [2024-06-28 01:22:58,928 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:22:59,629 INFO L124 PetriNetUnfolderBase]: 1468/2628 cut-off events. [2024-06-28 01:22:59,629 INFO L125 PetriNetUnfolderBase]: For 107389/107478 co-relation queries the response was YES. [2024-06-28 01:22:59,644 INFO L83 FinitePrefix]: Finished finitePrefix Result has 17131 conditions, 2628 events. 1468/2628 cut-off events. For 107389/107478 co-relation queries the response was YES. Maximal size of possible extension queue 211. Compared 15604 event pairs, 267 based on Foata normal form. 19/2479 useless extension candidates. Maximal degree in co-relation 17020. Up to 2290 conditions per place. [2024-06-28 01:22:59,653 INFO L140 encePairwiseOnDemand]: 27/38 looper letters, 354 selfloop transitions, 22 changer transitions 0/406 dead transitions. [2024-06-28 01:22:59,653 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 240 places, 406 transitions, 6019 flow [2024-06-28 01:22:59,653 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 01:22:59,653 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 01:22:59,653 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 160 transitions. [2024-06-28 01:22:59,654 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.42105263157894735 [2024-06-28 01:22:59,654 INFO L175 Difference]: Start difference. First operand has 231 places, 380 transitions, 5138 flow. Second operand 10 states and 160 transitions. [2024-06-28 01:22:59,654 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 240 places, 406 transitions, 6019 flow [2024-06-28 01:22:59,952 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 233 places, 406 transitions, 5976 flow, removed 6 selfloop flow, removed 7 redundant places. [2024-06-28 01:22:59,957 INFO L231 Difference]: Finished difference. Result has 236 places, 385 transitions, 5211 flow [2024-06-28 01:22:59,957 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=5100, PETRI_DIFFERENCE_MINUEND_PLACES=224, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=380, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=17, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=358, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=5211, PETRI_PLACES=236, PETRI_TRANSITIONS=385} [2024-06-28 01:22:59,958 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 194 predicate places. [2024-06-28 01:22:59,958 INFO L495 AbstractCegarLoop]: Abstraction has has 236 places, 385 transitions, 5211 flow [2024-06-28 01:22:59,958 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 11.272727272727273) internal successors, (124), 11 states have internal predecessors, (124), 0 states have call successors, (0), 0 states 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 01:22:59,958 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:22:59,958 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:22:59,958 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable68 [2024-06-28 01:22:59,958 INFO L420 AbstractCegarLoop]: === Iteration 70 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:22:59,959 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:22:59,959 INFO L85 PathProgramCache]: Analyzing trace with hash 1825492496, now seen corresponding path program 14 times [2024-06-28 01:22:59,959 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:22:59,959 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [239829196] [2024-06-28 01:22:59,959 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:22:59,959 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:22:59,965 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:23:00,580 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 01:23:00,581 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:23:00,581 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [239829196] [2024-06-28 01:23:00,581 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [239829196] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:23:00,581 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:23:00,581 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 01:23:00,581 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [487813709] [2024-06-28 01:23:00,581 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:23:00,581 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 01:23:00,581 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:23:00,581 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 01:23:00,581 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=78, Unknown=0, NotChecked=0, Total=110 [2024-06-28 01:23:00,671 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 38 [2024-06-28 01:23:00,671 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 236 places, 385 transitions, 5211 flow. Second operand has 11 states, 11 states have (on average 10.272727272727273) internal successors, (113), 11 states have internal predecessors, (113), 0 states have call successors, (0), 0 states 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 01:23:00,671 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:23:00,671 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 38 [2024-06-28 01:23:00,671 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:23:01,309 INFO L124 PetriNetUnfolderBase]: 1656/2909 cut-off events. [2024-06-28 01:23:01,309 INFO L125 PetriNetUnfolderBase]: For 95291/95291 co-relation queries the response was YES. [2024-06-28 01:23:01,324 INFO L83 FinitePrefix]: Finished finitePrefix Result has 18601 conditions, 2909 events. 1656/2909 cut-off events. For 95291/95291 co-relation queries the response was YES. Maximal size of possible extension queue 218. Compared 17137 event pairs, 386 based on Foata normal form. 3/2754 useless extension candidates. Maximal degree in co-relation 18487. Up to 2625 conditions per place. [2024-06-28 01:23:01,332 INFO L140 encePairwiseOnDemand]: 26/38 looper letters, 378 selfloop transitions, 29 changer transitions 0/415 dead transitions. [2024-06-28 01:23:01,333 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 245 places, 415 transitions, 6183 flow [2024-06-28 01:23:01,333 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 01:23:01,333 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 01:23:01,333 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 155 transitions. [2024-06-28 01:23:01,333 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.40789473684210525 [2024-06-28 01:23:01,333 INFO L175 Difference]: Start difference. First operand has 236 places, 385 transitions, 5211 flow. Second operand 10 states and 155 transitions. [2024-06-28 01:23:01,333 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 245 places, 415 transitions, 6183 flow [2024-06-28 01:23:01,661 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 238 places, 415 transitions, 6109 flow, removed 20 selfloop flow, removed 7 redundant places. [2024-06-28 01:23:01,666 INFO L231 Difference]: Finished difference. Result has 239 places, 385 transitions, 5204 flow [2024-06-28 01:23:01,667 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=5137, PETRI_DIFFERENCE_MINUEND_PLACES=229, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=385, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=29, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=356, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=5204, PETRI_PLACES=239, PETRI_TRANSITIONS=385} [2024-06-28 01:23:01,667 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 197 predicate places. [2024-06-28 01:23:01,667 INFO L495 AbstractCegarLoop]: Abstraction has has 239 places, 385 transitions, 5204 flow [2024-06-28 01:23:01,667 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 10.272727272727273) internal successors, (113), 11 states have internal predecessors, (113), 0 states have call successors, (0), 0 states 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 01:23:01,667 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:23:01,667 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:23:01,668 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable69 [2024-06-28 01:23:01,668 INFO L420 AbstractCegarLoop]: === Iteration 71 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:23:01,668 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:23:01,668 INFO L85 PathProgramCache]: Analyzing trace with hash -2115442493, now seen corresponding path program 5 times [2024-06-28 01:23:01,668 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:23:01,669 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [328081697] [2024-06-28 01:23:01,669 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:23:01,669 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:23:01,678 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:23:02,674 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 01:23:02,674 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:23:02,674 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [328081697] [2024-06-28 01:23:02,674 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [328081697] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:23:02,674 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:23:02,675 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 01:23:02,675 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1217485711] [2024-06-28 01:23:02,675 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:23:02,675 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 01:23:02,675 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:23:02,675 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 01:23:02,675 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=79, Unknown=0, NotChecked=0, Total=110 [2024-06-28 01:23:02,777 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 38 [2024-06-28 01:23:02,784 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 239 places, 385 transitions, 5204 flow. Second operand has 11 states, 11 states have (on average 11.272727272727273) internal successors, (124), 11 states have internal predecessors, (124), 0 states have call successors, (0), 0 states 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 01:23:02,784 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:23:02,784 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 38 [2024-06-28 01:23:02,784 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:23:03,485 INFO L124 PetriNetUnfolderBase]: 1463/2628 cut-off events. [2024-06-28 01:23:03,485 INFO L125 PetriNetUnfolderBase]: For 99732/99812 co-relation queries the response was YES. [2024-06-28 01:23:03,497 INFO L83 FinitePrefix]: Finished finitePrefix Result has 16929 conditions, 2628 events. 1463/2628 cut-off events. For 99732/99812 co-relation queries the response was YES. Maximal size of possible extension queue 211. Compared 15670 event pairs, 255 based on Foata normal form. 18/2478 useless extension candidates. Maximal degree in co-relation 16816. Up to 2287 conditions per place. [2024-06-28 01:23:03,504 INFO L140 encePairwiseOnDemand]: 28/38 looper letters, 363 selfloop transitions, 15 changer transitions 0/408 dead transitions. [2024-06-28 01:23:03,505 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 247 places, 408 transitions, 6070 flow [2024-06-28 01:23:03,505 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 01:23:03,505 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 01:23:03,505 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 148 transitions. [2024-06-28 01:23:03,505 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4327485380116959 [2024-06-28 01:23:03,505 INFO L175 Difference]: Start difference. First operand has 239 places, 385 transitions, 5204 flow. Second operand 9 states and 148 transitions. [2024-06-28 01:23:03,506 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 247 places, 408 transitions, 6070 flow [2024-06-28 01:23:03,791 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 236 places, 408 transitions, 5946 flow, removed 2 selfloop flow, removed 11 redundant places. [2024-06-28 01:23:03,796 INFO L231 Difference]: Finished difference. Result has 238 places, 388 transitions, 5153 flow [2024-06-28 01:23:03,797 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=5080, PETRI_DIFFERENCE_MINUEND_PLACES=228, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=385, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=370, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=5153, PETRI_PLACES=238, PETRI_TRANSITIONS=388} [2024-06-28 01:23:03,797 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 196 predicate places. [2024-06-28 01:23:03,797 INFO L495 AbstractCegarLoop]: Abstraction has has 238 places, 388 transitions, 5153 flow [2024-06-28 01:23:03,797 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 11.272727272727273) internal successors, (124), 11 states have internal predecessors, (124), 0 states have call successors, (0), 0 states 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 01:23:03,797 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:23:03,797 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:23:03,797 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable70 [2024-06-28 01:23:03,798 INFO L420 AbstractCegarLoop]: === Iteration 72 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:23:03,798 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:23:03,798 INFO L85 PathProgramCache]: Analyzing trace with hash 711099358, now seen corresponding path program 15 times [2024-06-28 01:23:03,798 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:23:03,798 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2072865951] [2024-06-28 01:23:03,798 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:23:03,798 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:23:03,804 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:23:04,420 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 01:23:04,420 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:23:04,420 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2072865951] [2024-06-28 01:23:04,420 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2072865951] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:23:04,420 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:23:04,420 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 01:23:04,420 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1925782972] [2024-06-28 01:23:04,420 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:23:04,420 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 01:23:04,421 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:23:04,421 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 01:23:04,421 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=77, Unknown=0, NotChecked=0, Total=110 [2024-06-28 01:23:04,514 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 38 [2024-06-28 01:23:04,514 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 238 places, 388 transitions, 5153 flow. Second operand has 11 states, 11 states have (on average 10.272727272727273) internal successors, (113), 11 states have internal predecessors, (113), 0 states have call successors, (0), 0 states 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 01:23:04,515 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:23:04,515 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 38 [2024-06-28 01:23:04,515 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:23:05,186 INFO L124 PetriNetUnfolderBase]: 1651/2905 cut-off events. [2024-06-28 01:23:05,186 INFO L125 PetriNetUnfolderBase]: For 87603/87603 co-relation queries the response was YES. [2024-06-28 01:23:05,203 INFO L83 FinitePrefix]: Finished finitePrefix Result has 18130 conditions, 2905 events. 1651/2905 cut-off events. For 87603/87603 co-relation queries the response was YES. Maximal size of possible extension queue 219. Compared 17158 event pairs, 350 based on Foata normal form. 3/2750 useless extension candidates. Maximal degree in co-relation 18015. Up to 2348 conditions per place. [2024-06-28 01:23:05,213 INFO L140 encePairwiseOnDemand]: 26/38 looper letters, 330 selfloop transitions, 82 changer transitions 0/420 dead transitions. [2024-06-28 01:23:05,213 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 247 places, 420 transitions, 6147 flow [2024-06-28 01:23:05,221 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 01:23:05,222 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 01:23:05,222 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 162 transitions. [2024-06-28 01:23:05,222 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4263157894736842 [2024-06-28 01:23:05,222 INFO L175 Difference]: Start difference. First operand has 238 places, 388 transitions, 5153 flow. Second operand 10 states and 162 transitions. [2024-06-28 01:23:05,222 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 247 places, 420 transitions, 6147 flow [2024-06-28 01:23:05,484 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 241 places, 420 transitions, 6088 flow, removed 17 selfloop flow, removed 6 redundant places. [2024-06-28 01:23:05,489 INFO L231 Difference]: Finished difference. Result has 242 places, 388 transitions, 5263 flow [2024-06-28 01:23:05,490 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=5094, PETRI_DIFFERENCE_MINUEND_PLACES=232, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=388, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=82, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=306, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=5263, PETRI_PLACES=242, PETRI_TRANSITIONS=388} [2024-06-28 01:23:05,490 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 200 predicate places. [2024-06-28 01:23:05,490 INFO L495 AbstractCegarLoop]: Abstraction has has 242 places, 388 transitions, 5263 flow [2024-06-28 01:23:05,490 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 10.272727272727273) internal successors, (113), 11 states have internal predecessors, (113), 0 states have call successors, (0), 0 states 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 01:23:05,490 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:23:05,490 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:23:05,490 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable71 [2024-06-28 01:23:05,491 INFO L420 AbstractCegarLoop]: === Iteration 73 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:23:05,491 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:23:05,491 INFO L85 PathProgramCache]: Analyzing trace with hash 711099203, now seen corresponding path program 5 times [2024-06-28 01:23:05,491 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:23:05,491 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [451469528] [2024-06-28 01:23:05,491 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:23:05,491 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:23:05,497 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:23:06,257 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:23:06,258 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:23:06,258 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [451469528] [2024-06-28 01:23:06,258 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [451469528] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:23:06,258 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:23:06,258 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 01:23:06,258 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [70876206] [2024-06-28 01:23:06,258 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:23:06,258 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 01:23:06,258 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:23:06,258 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 01:23:06,259 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=80, Unknown=0, NotChecked=0, Total=110 [2024-06-28 01:23:06,340 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 38 [2024-06-28 01:23:06,340 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 242 places, 388 transitions, 5263 flow. Second operand has 11 states, 11 states have (on average 10.272727272727273) internal successors, (113), 11 states have internal predecessors, (113), 0 states have call successors, (0), 0 states 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 01:23:06,340 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:23:06,340 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 38 [2024-06-28 01:23:06,340 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:23:07,019 INFO L124 PetriNetUnfolderBase]: 1649/2903 cut-off events. [2024-06-28 01:23:07,020 INFO L125 PetriNetUnfolderBase]: For 82426/82426 co-relation queries the response was YES. [2024-06-28 01:23:07,035 INFO L83 FinitePrefix]: Finished finitePrefix Result has 18179 conditions, 2903 events. 1649/2903 cut-off events. For 82426/82426 co-relation queries the response was YES. Maximal size of possible extension queue 219. Compared 17144 event pairs, 393 based on Foata normal form. 1/2746 useless extension candidates. Maximal degree in co-relation 18063. Up to 2694 conditions per place. [2024-06-28 01:23:07,044 INFO L140 encePairwiseOnDemand]: 27/38 looper letters, 378 selfloop transitions, 20 changer transitions 0/406 dead transitions. [2024-06-28 01:23:07,044 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 251 places, 406 transitions, 6169 flow [2024-06-28 01:23:07,044 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 01:23:07,044 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 01:23:07,044 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 147 transitions. [2024-06-28 01:23:07,045 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3868421052631579 [2024-06-28 01:23:07,045 INFO L175 Difference]: Start difference. First operand has 242 places, 388 transitions, 5263 flow. Second operand 10 states and 147 transitions. [2024-06-28 01:23:07,045 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 251 places, 406 transitions, 6169 flow [2024-06-28 01:23:07,336 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 242 places, 406 transitions, 5994 flow, removed 1 selfloop flow, removed 9 redundant places. [2024-06-28 01:23:07,341 INFO L231 Difference]: Finished difference. Result has 243 places, 390 transitions, 5175 flow [2024-06-28 01:23:07,341 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=5088, PETRI_DIFFERENCE_MINUEND_PLACES=233, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=388, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=18, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=368, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=5175, PETRI_PLACES=243, PETRI_TRANSITIONS=390} [2024-06-28 01:23:07,342 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 201 predicate places. [2024-06-28 01:23:07,342 INFO L495 AbstractCegarLoop]: Abstraction has has 243 places, 390 transitions, 5175 flow [2024-06-28 01:23:07,342 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 10.272727272727273) internal successors, (113), 11 states have internal predecessors, (113), 0 states have call successors, (0), 0 states 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 01:23:07,342 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:23:07,342 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:23:07,342 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable72 [2024-06-28 01:23:07,342 INFO L420 AbstractCegarLoop]: === Iteration 74 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:23:07,342 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:23:07,342 INFO L85 PathProgramCache]: Analyzing trace with hash -2127802813, now seen corresponding path program 1 times [2024-06-28 01:23:07,342 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:23:07,342 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1217150997] [2024-06-28 01:23:07,342 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:23:07,343 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:23:07,350 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:23:08,211 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 01:23:08,211 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:23:08,211 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1217150997] [2024-06-28 01:23:08,211 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1217150997] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:23:08,211 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:23:08,211 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 01:23:08,211 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [575613203] [2024-06-28 01:23:08,212 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:23:08,212 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 01:23:08,212 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:23:08,212 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 01:23:08,212 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=81, Unknown=0, NotChecked=0, Total=110 [2024-06-28 01:23:08,324 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 38 [2024-06-28 01:23:08,324 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 243 places, 390 transitions, 5175 flow. Second operand has 11 states, 11 states have (on average 10.272727272727273) internal successors, (113), 11 states have internal predecessors, (113), 0 states have call successors, (0), 0 states 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 01:23:08,324 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:23:08,324 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 38 [2024-06-28 01:23:08,324 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:23:09,003 INFO L124 PetriNetUnfolderBase]: 1645/2894 cut-off events. [2024-06-28 01:23:09,003 INFO L125 PetriNetUnfolderBase]: For 81197/81197 co-relation queries the response was YES. [2024-06-28 01:23:09,019 INFO L83 FinitePrefix]: Finished finitePrefix Result has 17817 conditions, 2894 events. 1645/2894 cut-off events. For 81197/81197 co-relation queries the response was YES. Maximal size of possible extension queue 218. Compared 17042 event pairs, 395 based on Foata normal form. 2/2738 useless extension candidates. Maximal degree in co-relation 17700. Up to 2659 conditions per place. [2024-06-28 01:23:09,028 INFO L140 encePairwiseOnDemand]: 26/38 looper letters, 382 selfloop transitions, 21 changer transitions 0/411 dead transitions. [2024-06-28 01:23:09,028 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 253 places, 411 transitions, 6083 flow [2024-06-28 01:23:09,028 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 01:23:09,028 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 01:23:09,029 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 161 transitions. [2024-06-28 01:23:09,029 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.38516746411483255 [2024-06-28 01:23:09,029 INFO L175 Difference]: Start difference. First operand has 243 places, 390 transitions, 5175 flow. Second operand 11 states and 161 transitions. [2024-06-28 01:23:09,029 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 253 places, 411 transitions, 6083 flow [2024-06-28 01:23:09,282 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 245 places, 411 transitions, 6016 flow, removed 15 selfloop flow, removed 8 redundant places. [2024-06-28 01:23:09,286 INFO L231 Difference]: Finished difference. Result has 246 places, 392 transitions, 5187 flow [2024-06-28 01:23:09,287 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=5108, PETRI_DIFFERENCE_MINUEND_PLACES=235, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=390, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=19, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=369, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=5187, PETRI_PLACES=246, PETRI_TRANSITIONS=392} [2024-06-28 01:23:09,287 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 204 predicate places. [2024-06-28 01:23:09,287 INFO L495 AbstractCegarLoop]: Abstraction has has 246 places, 392 transitions, 5187 flow [2024-06-28 01:23:09,287 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 10.272727272727273) internal successors, (113), 11 states have internal predecessors, (113), 0 states have call successors, (0), 0 states 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 01:23:09,287 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:23:09,287 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 01:23:09,287 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable73 [2024-06-28 01:23:09,287 INFO L420 AbstractCegarLoop]: === Iteration 75 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:23:09,288 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:23:09,288 INFO L85 PathProgramCache]: Analyzing trace with hash -1319501960, now seen corresponding path program 1 times [2024-06-28 01:23:09,288 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:23:09,288 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [575508569] [2024-06-28 01:23:09,288 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:23:09,288 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:23:09,294 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:23:10,276 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 01:23:10,276 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:23:10,276 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [575508569] [2024-06-28 01:23:10,276 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [575508569] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:23:10,276 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:23:10,276 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-28 01:23:10,276 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [178815358] [2024-06-28 01:23:10,276 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:23:10,276 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-28 01:23:10,276 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:23:10,277 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-28 01:23:10,277 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=104, Unknown=0, NotChecked=0, Total=132 [2024-06-28 01:23:10,397 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 38 [2024-06-28 01:23:10,398 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 246 places, 392 transitions, 5187 flow. Second operand has 12 states, 12 states have (on average 10.25) internal successors, (123), 12 states have internal predecessors, (123), 0 states have call successors, (0), 0 states 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 01:23:10,398 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:23:10,398 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 38 [2024-06-28 01:23:10,398 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:23:11,148 INFO L124 PetriNetUnfolderBase]: 1682/2977 cut-off events. [2024-06-28 01:23:11,149 INFO L125 PetriNetUnfolderBase]: For 89812/89812 co-relation queries the response was YES. [2024-06-28 01:23:11,166 INFO L83 FinitePrefix]: Finished finitePrefix Result has 18510 conditions, 2977 events. 1682/2977 cut-off events. For 89812/89812 co-relation queries the response was YES. Maximal size of possible extension queue 230. Compared 17781 event pairs, 267 based on Foata normal form. 2/2818 useless extension candidates. Maximal degree in co-relation 18392. Up to 2592 conditions per place. [2024-06-28 01:23:11,175 INFO L140 encePairwiseOnDemand]: 27/38 looper letters, 393 selfloop transitions, 40 changer transitions 0/441 dead transitions. [2024-06-28 01:23:11,176 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 257 places, 441 transitions, 6465 flow [2024-06-28 01:23:11,176 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-28 01:23:11,176 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-28 01:23:11,176 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 196 transitions. [2024-06-28 01:23:11,177 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4298245614035088 [2024-06-28 01:23:11,177 INFO L175 Difference]: Start difference. First operand has 246 places, 392 transitions, 5187 flow. Second operand 12 states and 196 transitions. [2024-06-28 01:23:11,177 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 257 places, 441 transitions, 6465 flow [2024-06-28 01:23:11,509 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 248 places, 441 transitions, 6406 flow, removed 10 selfloop flow, removed 9 redundant places. [2024-06-28 01:23:11,514 INFO L231 Difference]: Finished difference. Result has 249 places, 394 transitions, 5262 flow [2024-06-28 01:23:11,515 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=5128, PETRI_DIFFERENCE_MINUEND_PLACES=237, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=392, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=39, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=353, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=5262, PETRI_PLACES=249, PETRI_TRANSITIONS=394} [2024-06-28 01:23:11,515 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 207 predicate places. [2024-06-28 01:23:11,515 INFO L495 AbstractCegarLoop]: Abstraction has has 249 places, 394 transitions, 5262 flow [2024-06-28 01:23:11,515 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 10.25) internal successors, (123), 12 states have internal predecessors, (123), 0 states have call successors, (0), 0 states 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 01:23:11,515 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:23:11,515 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 01:23:11,515 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable74 [2024-06-28 01:23:11,515 INFO L420 AbstractCegarLoop]: === Iteration 76 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:23:11,515 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:23:11,515 INFO L85 PathProgramCache]: Analyzing trace with hash -1909639900, now seen corresponding path program 2 times [2024-06-28 01:23:11,516 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:23:11,516 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2073190384] [2024-06-28 01:23:11,516 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:23:11,516 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:23:11,522 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:23:12,430 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 01:23:12,431 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:23:12,431 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2073190384] [2024-06-28 01:23:12,431 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2073190384] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:23:12,431 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:23:12,431 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-28 01:23:12,431 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2049479808] [2024-06-28 01:23:12,431 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:23:12,431 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-28 01:23:12,431 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:23:12,431 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-28 01:23:12,431 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2024-06-28 01:23:12,537 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 38 [2024-06-28 01:23:12,537 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 249 places, 394 transitions, 5262 flow. Second operand has 12 states, 12 states have (on average 10.25) internal successors, (123), 12 states have internal predecessors, (123), 0 states have call successors, (0), 0 states 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 01:23:12,537 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:23:12,537 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 38 [2024-06-28 01:23:12,537 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:23:13,285 INFO L124 PetriNetUnfolderBase]: 1705/3034 cut-off events. [2024-06-28 01:23:13,285 INFO L125 PetriNetUnfolderBase]: For 93230/93230 co-relation queries the response was YES. [2024-06-28 01:23:13,302 INFO L83 FinitePrefix]: Finished finitePrefix Result has 18925 conditions, 3034 events. 1705/3034 cut-off events. For 93230/93230 co-relation queries the response was YES. Maximal size of possible extension queue 233. Compared 18276 event pairs, 329 based on Foata normal form. 2/2869 useless extension candidates. Maximal degree in co-relation 18806. Up to 2697 conditions per place. [2024-06-28 01:23:13,310 INFO L140 encePairwiseOnDemand]: 27/38 looper letters, 390 selfloop transitions, 41 changer transitions 0/439 dead transitions. [2024-06-28 01:23:13,311 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 260 places, 439 transitions, 6364 flow [2024-06-28 01:23:13,311 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-28 01:23:13,311 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-28 01:23:13,311 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 192 transitions. [2024-06-28 01:23:13,311 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.42105263157894735 [2024-06-28 01:23:13,312 INFO L175 Difference]: Start difference. First operand has 249 places, 394 transitions, 5262 flow. Second operand 12 states and 192 transitions. [2024-06-28 01:23:13,312 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 260 places, 439 transitions, 6364 flow [2024-06-28 01:23:13,597 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 252 places, 439 transitions, 6269 flow, removed 19 selfloop flow, removed 8 redundant places. [2024-06-28 01:23:13,602 INFO L231 Difference]: Finished difference. Result has 253 places, 397 transitions, 5297 flow [2024-06-28 01:23:13,602 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=5177, PETRI_DIFFERENCE_MINUEND_PLACES=241, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=394, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=38, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=355, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=5297, PETRI_PLACES=253, PETRI_TRANSITIONS=397} [2024-06-28 01:23:13,602 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 211 predicate places. [2024-06-28 01:23:13,602 INFO L495 AbstractCegarLoop]: Abstraction has has 253 places, 397 transitions, 5297 flow [2024-06-28 01:23:13,602 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 10.25) internal successors, (123), 12 states have internal predecessors, (123), 0 states have call successors, (0), 0 states 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 01:23:13,602 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:23:13,603 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:23:13,603 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable75 [2024-06-28 01:23:13,603 INFO L420 AbstractCegarLoop]: === Iteration 77 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:23:13,603 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:23:13,603 INFO L85 PathProgramCache]: Analyzing trace with hash -1319441386, now seen corresponding path program 1 times [2024-06-28 01:23:13,603 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:23:13,603 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1246926684] [2024-06-28 01:23:13,603 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:23:13,603 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:23:13,609 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:23:14,420 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 01:23:14,420 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:23:14,420 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1246926684] [2024-06-28 01:23:14,420 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1246926684] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:23:14,420 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:23:14,420 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-28 01:23:14,420 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1294816660] [2024-06-28 01:23:14,421 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:23:14,421 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-28 01:23:14,421 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:23:14,421 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-28 01:23:14,421 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=102, Unknown=0, NotChecked=0, Total=132 [2024-06-28 01:23:14,550 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 38 [2024-06-28 01:23:14,551 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 253 places, 397 transitions, 5297 flow. Second operand has 12 states, 12 states have (on average 10.25) internal successors, (123), 12 states have internal predecessors, (123), 0 states have call successors, (0), 0 states 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 01:23:14,551 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:23:14,551 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 38 [2024-06-28 01:23:14,551 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:23:15,351 INFO L124 PetriNetUnfolderBase]: 1724/3062 cut-off events. [2024-06-28 01:23:15,351 INFO L125 PetriNetUnfolderBase]: For 97682/97682 co-relation queries the response was YES. [2024-06-28 01:23:15,368 INFO L83 FinitePrefix]: Finished finitePrefix Result has 18999 conditions, 3062 events. 1724/3062 cut-off events. For 97682/97682 co-relation queries the response was YES. Maximal size of possible extension queue 235. Compared 18454 event pairs, 328 based on Foata normal form. 3/2893 useless extension candidates. Maximal degree in co-relation 18878. Up to 2707 conditions per place. [2024-06-28 01:23:15,376 INFO L140 encePairwiseOnDemand]: 25/38 looper letters, 390 selfloop transitions, 45 changer transitions 0/443 dead transitions. [2024-06-28 01:23:15,376 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 265 places, 443 transitions, 6419 flow [2024-06-28 01:23:15,377 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-06-28 01:23:15,377 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2024-06-28 01:23:15,378 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 205 transitions. [2024-06-28 01:23:15,378 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4149797570850202 [2024-06-28 01:23:15,378 INFO L175 Difference]: Start difference. First operand has 253 places, 397 transitions, 5297 flow. Second operand 13 states and 205 transitions. [2024-06-28 01:23:15,378 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 265 places, 443 transitions, 6419 flow [2024-06-28 01:23:15,705 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 257 places, 443 transitions, 6334 flow, removed 7 selfloop flow, removed 8 redundant places. [2024-06-28 01:23:15,710 INFO L231 Difference]: Finished difference. Result has 258 places, 400 transitions, 5366 flow [2024-06-28 01:23:15,710 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=5212, PETRI_DIFFERENCE_MINUEND_PLACES=245, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=397, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=42, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=352, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=5366, PETRI_PLACES=258, PETRI_TRANSITIONS=400} [2024-06-28 01:23:15,711 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 216 predicate places. [2024-06-28 01:23:15,711 INFO L495 AbstractCegarLoop]: Abstraction has has 258 places, 400 transitions, 5366 flow [2024-06-28 01:23:15,711 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 10.25) internal successors, (123), 12 states have internal predecessors, (123), 0 states have call successors, (0), 0 states 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 01:23:15,711 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:23:15,711 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 01:23:15,711 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable76 [2024-06-28 01:23:15,711 INFO L420 AbstractCegarLoop]: === Iteration 78 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:23:15,711 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:23:15,711 INFO L85 PathProgramCache]: Analyzing trace with hash -1316645000, now seen corresponding path program 3 times [2024-06-28 01:23:15,711 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:23:15,711 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2069200076] [2024-06-28 01:23:15,711 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:23:15,712 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:23:15,717 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:23:16,695 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 01:23:16,695 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:23:16,695 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2069200076] [2024-06-28 01:23:16,695 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2069200076] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:23:16,695 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:23:16,695 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-28 01:23:16,695 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [655477691] [2024-06-28 01:23:16,695 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:23:16,695 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-28 01:23:16,695 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:23:16,696 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-28 01:23:16,696 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=104, Unknown=0, NotChecked=0, Total=132 [2024-06-28 01:23:16,799 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 38 [2024-06-28 01:23:16,799 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 258 places, 400 transitions, 5366 flow. Second operand has 12 states, 12 states have (on average 10.25) internal successors, (123), 12 states have internal predecessors, (123), 0 states have call successors, (0), 0 states 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 01:23:16,799 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:23:16,799 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 38 [2024-06-28 01:23:16,799 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:23:17,552 INFO L124 PetriNetUnfolderBase]: 1721/3057 cut-off events. [2024-06-28 01:23:17,552 INFO L125 PetriNetUnfolderBase]: For 91313/91313 co-relation queries the response was YES. [2024-06-28 01:23:17,571 INFO L83 FinitePrefix]: Finished finitePrefix Result has 18939 conditions, 3057 events. 1721/3057 cut-off events. For 91313/91313 co-relation queries the response was YES. Maximal size of possible extension queue 235. Compared 18411 event pairs, 330 based on Foata normal form. 2/2888 useless extension candidates. Maximal degree in co-relation 18817. Up to 2736 conditions per place. [2024-06-28 01:23:17,581 INFO L140 encePairwiseOnDemand]: 27/38 looper letters, 392 selfloop transitions, 37 changer transitions 0/437 dead transitions. [2024-06-28 01:23:17,581 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 268 places, 437 transitions, 6400 flow [2024-06-28 01:23:17,582 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 01:23:17,582 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 01:23:17,582 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 175 transitions. [2024-06-28 01:23:17,582 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.41866028708133973 [2024-06-28 01:23:17,582 INFO L175 Difference]: Start difference. First operand has 258 places, 400 transitions, 5366 flow. Second operand 11 states and 175 transitions. [2024-06-28 01:23:17,582 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 268 places, 437 transitions, 6400 flow [2024-06-28 01:23:17,902 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 257 places, 437 transitions, 6268 flow, removed 24 selfloop flow, removed 11 redundant places. [2024-06-28 01:23:17,907 INFO L231 Difference]: Finished difference. Result has 258 places, 400 transitions, 5312 flow [2024-06-28 01:23:17,907 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=5234, PETRI_DIFFERENCE_MINUEND_PLACES=247, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=400, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=37, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=363, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=5312, PETRI_PLACES=258, PETRI_TRANSITIONS=400} [2024-06-28 01:23:17,907 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 216 predicate places. [2024-06-28 01:23:17,908 INFO L495 AbstractCegarLoop]: Abstraction has has 258 places, 400 transitions, 5312 flow [2024-06-28 01:23:17,908 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 10.25) internal successors, (123), 12 states have internal predecessors, (123), 0 states have call successors, (0), 0 states 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 01:23:17,908 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:23:17,908 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 01:23:17,908 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable77 [2024-06-28 01:23:17,908 INFO L420 AbstractCegarLoop]: === Iteration 79 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:23:17,908 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:23:17,909 INFO L85 PathProgramCache]: Analyzing trace with hash -1791547446, now seen corresponding path program 2 times [2024-06-28 01:23:17,909 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:23:17,909 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1969433811] [2024-06-28 01:23:17,909 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:23:17,909 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:23:17,920 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:23:18,753 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 01:23:18,753 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:23:18,753 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1969433811] [2024-06-28 01:23:18,753 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1969433811] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:23:18,753 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:23:18,753 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-28 01:23:18,753 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [14877408] [2024-06-28 01:23:18,753 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:23:18,754 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-28 01:23:18,754 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:23:18,754 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-28 01:23:18,754 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=94, Unknown=0, NotChecked=0, Total=132 [2024-06-28 01:23:18,855 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 38 [2024-06-28 01:23:18,855 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 258 places, 400 transitions, 5312 flow. Second operand has 12 states, 12 states have (on average 10.25) internal successors, (123), 12 states have internal predecessors, (123), 0 states have call successors, (0), 0 states 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 01:23:18,855 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:23:18,855 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 38 [2024-06-28 01:23:18,855 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:23:19,517 INFO L124 PetriNetUnfolderBase]: 1727/3055 cut-off events. [2024-06-28 01:23:19,518 INFO L125 PetriNetUnfolderBase]: For 89418/89418 co-relation queries the response was YES. [2024-06-28 01:23:19,535 INFO L83 FinitePrefix]: Finished finitePrefix Result has 18793 conditions, 3055 events. 1727/3055 cut-off events. For 89418/89418 co-relation queries the response was YES. Maximal size of possible extension queue 229. Compared 18248 event pairs, 238 based on Foata normal form. 1/2883 useless extension candidates. Maximal degree in co-relation 18670. Up to 2251 conditions per place. [2024-06-28 01:23:19,544 INFO L140 encePairwiseOnDemand]: 26/38 looper letters, 377 selfloop transitions, 107 changer transitions 0/492 dead transitions. [2024-06-28 01:23:19,544 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 268 places, 492 transitions, 7089 flow [2024-06-28 01:23:19,544 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 01:23:19,544 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 01:23:19,545 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 181 transitions. [2024-06-28 01:23:19,545 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.43301435406698563 [2024-06-28 01:23:19,545 INFO L175 Difference]: Start difference. First operand has 258 places, 400 transitions, 5312 flow. Second operand 11 states and 181 transitions. [2024-06-28 01:23:19,545 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 268 places, 492 transitions, 7089 flow [2024-06-28 01:23:19,858 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 257 places, 492 transitions, 7000 flow, removed 1 selfloop flow, removed 11 redundant places. [2024-06-28 01:23:19,864 INFO L231 Difference]: Finished difference. Result has 263 places, 442 transitions, 6030 flow [2024-06-28 01:23:19,864 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=5223, PETRI_DIFFERENCE_MINUEND_PLACES=247, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=400, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=66, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=302, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=6030, PETRI_PLACES=263, PETRI_TRANSITIONS=442} [2024-06-28 01:23:19,864 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 221 predicate places. [2024-06-28 01:23:19,864 INFO L495 AbstractCegarLoop]: Abstraction has has 263 places, 442 transitions, 6030 flow [2024-06-28 01:23:19,864 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 10.25) internal successors, (123), 12 states have internal predecessors, (123), 0 states have call successors, (0), 0 states 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 01:23:19,864 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:23:19,864 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 01:23:19,864 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable78 [2024-06-28 01:23:19,865 INFO L420 AbstractCegarLoop]: === Iteration 80 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:23:19,865 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:23:19,865 INFO L85 PathProgramCache]: Analyzing trace with hash -1791552096, now seen corresponding path program 3 times [2024-06-28 01:23:19,865 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:23:19,865 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [886417533] [2024-06-28 01:23:19,865 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:23:19,865 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:23:19,870 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:23:20,793 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 01:23:20,793 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:23:20,793 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [886417533] [2024-06-28 01:23:20,793 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [886417533] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:23:20,793 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:23:20,793 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-28 01:23:20,793 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [960762171] [2024-06-28 01:23:20,793 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:23:20,793 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-28 01:23:20,793 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:23:20,794 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-28 01:23:20,794 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=97, Unknown=0, NotChecked=0, Total=132 [2024-06-28 01:23:20,908 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 38 [2024-06-28 01:23:20,909 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 263 places, 442 transitions, 6030 flow. Second operand has 12 states, 12 states have (on average 10.25) internal successors, (123), 12 states have internal predecessors, (123), 0 states have call successors, (0), 0 states 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 01:23:20,909 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:23:20,909 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 38 [2024-06-28 01:23:20,909 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:23:21,720 INFO L124 PetriNetUnfolderBase]: 1771/3120 cut-off events. [2024-06-28 01:23:21,720 INFO L125 PetriNetUnfolderBase]: For 109699/109699 co-relation queries the response was YES. [2024-06-28 01:23:21,740 INFO L83 FinitePrefix]: Finished finitePrefix Result has 20543 conditions, 3120 events. 1771/3120 cut-off events. For 109699/109699 co-relation queries the response was YES. Maximal size of possible extension queue 233. Compared 18649 event pairs, 189 based on Foata normal form. 3/2942 useless extension candidates. Maximal degree in co-relation 20414. Up to 1385 conditions per place. [2024-06-28 01:23:21,749 INFO L140 encePairwiseOnDemand]: 25/38 looper letters, 242 selfloop transitions, 239 changer transitions 0/489 dead transitions. [2024-06-28 01:23:21,749 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 274 places, 489 transitions, 7450 flow [2024-06-28 01:23:21,749 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-28 01:23:21,749 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-28 01:23:21,750 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 212 transitions. [2024-06-28 01:23:21,750 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4649122807017544 [2024-06-28 01:23:21,750 INFO L175 Difference]: Start difference. First operand has 263 places, 442 transitions, 6030 flow. Second operand 12 states and 212 transitions. [2024-06-28 01:23:21,750 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 274 places, 489 transitions, 7450 flow [2024-06-28 01:23:22,196 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 271 places, 489 transitions, 7366 flow, removed 25 selfloop flow, removed 3 redundant places. [2024-06-28 01:23:22,202 INFO L231 Difference]: Finished difference. Result has 272 places, 448 transitions, 6560 flow [2024-06-28 01:23:22,202 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=5946, PETRI_DIFFERENCE_MINUEND_PLACES=260, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=442, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=236, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=206, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=6560, PETRI_PLACES=272, PETRI_TRANSITIONS=448} [2024-06-28 01:23:22,203 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 230 predicate places. [2024-06-28 01:23:22,203 INFO L495 AbstractCegarLoop]: Abstraction has has 272 places, 448 transitions, 6560 flow [2024-06-28 01:23:22,203 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 10.25) internal successors, (123), 12 states have internal predecessors, (123), 0 states have call successors, (0), 0 states 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 01:23:22,203 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:23:22,203 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 01:23:22,203 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable79 [2024-06-28 01:23:22,203 INFO L420 AbstractCegarLoop]: === Iteration 81 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:23:22,204 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:23:22,204 INFO L85 PathProgramCache]: Analyzing trace with hash -1201176076, now seen corresponding path program 4 times [2024-06-28 01:23:22,204 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:23:22,204 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [724297267] [2024-06-28 01:23:22,204 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:23:22,204 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:23:22,210 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:23:23,051 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 01:23:23,051 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:23:23,051 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [724297267] [2024-06-28 01:23:23,051 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [724297267] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:23:23,051 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:23:23,051 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-28 01:23:23,051 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2124994041] [2024-06-28 01:23:23,051 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:23:23,051 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-28 01:23:23,052 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:23:23,052 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-28 01:23:23,052 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=93, Unknown=0, NotChecked=0, Total=132 [2024-06-28 01:23:23,138 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 38 [2024-06-28 01:23:23,139 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 272 places, 448 transitions, 6560 flow. Second operand has 12 states, 12 states have (on average 10.25) internal successors, (123), 12 states have internal predecessors, (123), 0 states have call successors, (0), 0 states 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 01:23:23,139 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:23:23,139 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 38 [2024-06-28 01:23:23,139 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:23:23,919 INFO L124 PetriNetUnfolderBase]: 1765/3109 cut-off events. [2024-06-28 01:23:23,919 INFO L125 PetriNetUnfolderBase]: For 104830/104830 co-relation queries the response was YES. [2024-06-28 01:23:24,002 INFO L83 FinitePrefix]: Finished finitePrefix Result has 20867 conditions, 3109 events. 1765/3109 cut-off events. For 104830/104830 co-relation queries the response was YES. Maximal size of possible extension queue 232. Compared 18545 event pairs, 184 based on Foata normal form. 3/2931 useless extension candidates. Maximal degree in co-relation 20736. Up to 1408 conditions per place. [2024-06-28 01:23:24,009 INFO L140 encePairwiseOnDemand]: 25/38 looper letters, 252 selfloop transitions, 226 changer transitions 0/486 dead transitions. [2024-06-28 01:23:24,009 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 282 places, 486 transitions, 7700 flow [2024-06-28 01:23:24,010 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 01:23:24,010 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 01:23:24,010 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 192 transitions. [2024-06-28 01:23:24,010 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45933014354066987 [2024-06-28 01:23:24,010 INFO L175 Difference]: Start difference. First operand has 272 places, 448 transitions, 6560 flow. Second operand 11 states and 192 transitions. [2024-06-28 01:23:24,010 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 282 places, 486 transitions, 7700 flow [2024-06-28 01:23:24,470 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 274 places, 486 transitions, 7296 flow, removed 42 selfloop flow, removed 8 redundant places. [2024-06-28 01:23:24,476 INFO L231 Difference]: Finished difference. Result has 275 places, 448 transitions, 6615 flow [2024-06-28 01:23:24,476 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=6156, PETRI_DIFFERENCE_MINUEND_PLACES=264, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=448, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=226, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=222, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=6615, PETRI_PLACES=275, PETRI_TRANSITIONS=448} [2024-06-28 01:23:24,476 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 233 predicate places. [2024-06-28 01:23:24,476 INFO L495 AbstractCegarLoop]: Abstraction has has 275 places, 448 transitions, 6615 flow [2024-06-28 01:23:24,476 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 10.25) internal successors, (123), 12 states have internal predecessors, (123), 0 states have call successors, (0), 0 states 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 01:23:24,476 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:23:24,476 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 01:23:24,476 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable80 [2024-06-28 01:23:24,476 INFO L420 AbstractCegarLoop]: === Iteration 82 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:23:24,477 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:23:24,477 INFO L85 PathProgramCache]: Analyzing trace with hash -1791552220, now seen corresponding path program 4 times [2024-06-28 01:23:24,477 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:23:24,477 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [212139695] [2024-06-28 01:23:24,477 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:23:24,477 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:23:24,483 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:23:25,478 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 01:23:25,478 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:23:25,479 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [212139695] [2024-06-28 01:23:25,479 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [212139695] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:23:25,479 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:23:25,479 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-28 01:23:25,479 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [316950100] [2024-06-28 01:23:25,479 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:23:25,479 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-28 01:23:25,479 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:23:25,479 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-28 01:23:25,479 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=98, Unknown=0, NotChecked=0, Total=132 [2024-06-28 01:23:25,580 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 38 [2024-06-28 01:23:25,580 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 275 places, 448 transitions, 6615 flow. Second operand has 12 states, 12 states have (on average 10.25) internal successors, (123), 12 states have internal predecessors, (123), 0 states have call successors, (0), 0 states 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 01:23:25,580 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:23:25,580 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 38 [2024-06-28 01:23:25,581 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:23:26,318 INFO L124 PetriNetUnfolderBase]: 1782/3153 cut-off events. [2024-06-28 01:23:26,318 INFO L125 PetriNetUnfolderBase]: For 103600/103600 co-relation queries the response was YES. [2024-06-28 01:23:26,336 INFO L83 FinitePrefix]: Finished finitePrefix Result has 21365 conditions, 3153 events. 1782/3153 cut-off events. For 103600/103600 co-relation queries the response was YES. Maximal size of possible extension queue 234. Compared 19001 event pairs, 236 based on Foata normal form. 2/2972 useless extension candidates. Maximal degree in co-relation 21232. Up to 2668 conditions per place. [2024-06-28 01:23:26,344 INFO L140 encePairwiseOnDemand]: 27/38 looper letters, 411 selfloop transitions, 67 changer transitions 0/486 dead transitions. [2024-06-28 01:23:26,344 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 285 places, 486 transitions, 7785 flow [2024-06-28 01:23:26,345 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 01:23:26,345 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 01:23:26,345 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 178 transitions. [2024-06-28 01:23:26,345 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4258373205741627 [2024-06-28 01:23:26,345 INFO L175 Difference]: Start difference. First operand has 275 places, 448 transitions, 6615 flow. Second operand 11 states and 178 transitions. [2024-06-28 01:23:26,345 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 285 places, 486 transitions, 7785 flow [2024-06-28 01:23:26,797 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 275 places, 486 transitions, 7328 flow, removed 1 selfloop flow, removed 10 redundant places. [2024-06-28 01:23:26,803 INFO L231 Difference]: Finished difference. Result has 276 places, 449 transitions, 6324 flow [2024-06-28 01:23:26,803 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=6158, PETRI_DIFFERENCE_MINUEND_PLACES=265, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=448, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=66, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=381, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=6324, PETRI_PLACES=276, PETRI_TRANSITIONS=449} [2024-06-28 01:23:26,803 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 234 predicate places. [2024-06-28 01:23:26,804 INFO L495 AbstractCegarLoop]: Abstraction has has 276 places, 449 transitions, 6324 flow [2024-06-28 01:23:26,804 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 10.25) internal successors, (123), 12 states have internal predecessors, (123), 0 states have call successors, (0), 0 states 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 01:23:26,804 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:23:26,804 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 01:23:26,804 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable81 [2024-06-28 01:23:26,804 INFO L420 AbstractCegarLoop]: === Iteration 83 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:23:26,804 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:23:26,804 INFO L85 PathProgramCache]: Analyzing trace with hash -1035536942, now seen corresponding path program 5 times [2024-06-28 01:23:26,804 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:23:26,804 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1561238323] [2024-06-28 01:23:26,804 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:23:26,804 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:23:26,810 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:23:27,637 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 01:23:27,637 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:23:27,637 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1561238323] [2024-06-28 01:23:27,637 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1561238323] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:23:27,637 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:23:27,637 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-28 01:23:27,637 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1748192768] [2024-06-28 01:23:27,637 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:23:27,637 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-28 01:23:27,637 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:23:27,638 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-28 01:23:27,638 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=93, Unknown=0, NotChecked=0, Total=132 [2024-06-28 01:23:27,735 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 38 [2024-06-28 01:23:27,735 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 276 places, 449 transitions, 6324 flow. Second operand has 12 states, 12 states have (on average 10.25) internal successors, (123), 12 states have internal predecessors, (123), 0 states have call successors, (0), 0 states 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 01:23:27,735 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:23:27,735 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 38 [2024-06-28 01:23:27,735 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:23:28,517 INFO L124 PetriNetUnfolderBase]: 1801/3183 cut-off events. [2024-06-28 01:23:28,517 INFO L125 PetriNetUnfolderBase]: For 107574/107574 co-relation queries the response was YES. [2024-06-28 01:23:28,537 INFO L83 FinitePrefix]: Finished finitePrefix Result has 21103 conditions, 3183 events. 1801/3183 cut-off events. For 107574/107574 co-relation queries the response was YES. Maximal size of possible extension queue 237. Compared 19137 event pairs, 227 based on Foata normal form. 3/2998 useless extension candidates. Maximal degree in co-relation 20969. Up to 1467 conditions per place. [2024-06-28 01:23:28,547 INFO L140 encePairwiseOnDemand]: 25/38 looper letters, 272 selfloop transitions, 218 changer transitions 0/498 dead transitions. [2024-06-28 01:23:28,548 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 286 places, 498 transitions, 7628 flow [2024-06-28 01:23:28,548 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 01:23:28,548 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 01:23:28,548 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 194 transitions. [2024-06-28 01:23:28,549 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.46411483253588515 [2024-06-28 01:23:28,549 INFO L175 Difference]: Start difference. First operand has 276 places, 449 transitions, 6324 flow. Second operand 11 states and 194 transitions. [2024-06-28 01:23:28,549 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 286 places, 498 transitions, 7628 flow [2024-06-28 01:23:28,985 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 277 places, 498 transitions, 7472 flow, removed 12 selfloop flow, removed 9 redundant places. [2024-06-28 01:23:28,991 INFO L231 Difference]: Finished difference. Result has 278 places, 452 transitions, 6681 flow [2024-06-28 01:23:28,991 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=6168, PETRI_DIFFERENCE_MINUEND_PLACES=267, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=449, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=215, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=231, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=6681, PETRI_PLACES=278, PETRI_TRANSITIONS=452} [2024-06-28 01:23:28,991 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 236 predicate places. [2024-06-28 01:23:28,992 INFO L495 AbstractCegarLoop]: Abstraction has has 278 places, 452 transitions, 6681 flow [2024-06-28 01:23:28,992 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 10.25) internal successors, (123), 12 states have internal predecessors, (123), 0 states have call successors, (0), 0 states 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 01:23:28,992 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:23:28,992 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 01:23:28,992 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable82 [2024-06-28 01:23:28,992 INFO L420 AbstractCegarLoop]: === Iteration 84 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:23:28,992 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:23:28,992 INFO L85 PathProgramCache]: Analyzing trace with hash -1625913086, now seen corresponding path program 5 times [2024-06-28 01:23:28,992 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:23:28,992 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1359888436] [2024-06-28 01:23:28,992 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:23:28,992 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:23:28,998 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:23:30,028 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 01:23:30,028 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:23:30,028 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1359888436] [2024-06-28 01:23:30,028 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1359888436] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:23:30,028 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:23:30,028 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-28 01:23:30,029 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [9818769] [2024-06-28 01:23:30,029 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:23:30,029 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-28 01:23:30,029 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:23:30,029 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-28 01:23:30,029 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=98, Unknown=0, NotChecked=0, Total=132 [2024-06-28 01:23:30,138 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 38 [2024-06-28 01:23:30,138 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 278 places, 452 transitions, 6681 flow. Second operand has 12 states, 12 states have (on average 10.25) internal successors, (123), 12 states have internal predecessors, (123), 0 states have call successors, (0), 0 states 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 01:23:30,138 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:23:30,138 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 38 [2024-06-28 01:23:30,138 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:23:30,906 INFO L124 PetriNetUnfolderBase]: 1818/3224 cut-off events. [2024-06-28 01:23:30,906 INFO L125 PetriNetUnfolderBase]: For 108956/108956 co-relation queries the response was YES. [2024-06-28 01:23:30,927 INFO L83 FinitePrefix]: Finished finitePrefix Result has 21750 conditions, 3224 events. 1818/3224 cut-off events. For 108956/108956 co-relation queries the response was YES. Maximal size of possible extension queue 238. Compared 19511 event pairs, 252 based on Foata normal form. 2/3036 useless extension candidates. Maximal degree in co-relation 21615. Up to 2727 conditions per place. [2024-06-28 01:23:30,936 INFO L140 encePairwiseOnDemand]: 27/38 looper letters, 409 selfloop transitions, 70 changer transitions 0/487 dead transitions. [2024-06-28 01:23:30,936 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 288 places, 487 transitions, 7839 flow [2024-06-28 01:23:30,937 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 01:23:30,937 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 01:23:30,937 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 176 transitions. [2024-06-28 01:23:30,937 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.42105263157894735 [2024-06-28 01:23:30,937 INFO L175 Difference]: Start difference. First operand has 278 places, 452 transitions, 6681 flow. Second operand 11 states and 176 transitions. [2024-06-28 01:23:30,937 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 288 places, 487 transitions, 7839 flow [2024-06-28 01:23:31,431 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 279 places, 487 transitions, 7360 flow, removed 24 selfloop flow, removed 9 redundant places. [2024-06-28 01:23:31,437 INFO L231 Difference]: Finished difference. Result has 280 places, 453 transitions, 6376 flow [2024-06-28 01:23:31,437 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=6202, PETRI_DIFFERENCE_MINUEND_PLACES=269, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=452, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=69, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=382, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=6376, PETRI_PLACES=280, PETRI_TRANSITIONS=453} [2024-06-28 01:23:31,438 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 238 predicate places. [2024-06-28 01:23:31,438 INFO L495 AbstractCegarLoop]: Abstraction has has 280 places, 453 transitions, 6376 flow [2024-06-28 01:23:31,438 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 10.25) internal successors, (123), 12 states have internal predecessors, (123), 0 states have call successors, (0), 0 states 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 01:23:31,438 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:23:31,438 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 01:23:31,438 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable83 [2024-06-28 01:23:31,438 INFO L420 AbstractCegarLoop]: === Iteration 85 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:23:31,439 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:23:31,439 INFO L85 PathProgramCache]: Analyzing trace with hash -1625912962, now seen corresponding path program 6 times [2024-06-28 01:23:31,439 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:23:31,439 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1927614331] [2024-06-28 01:23:31,439 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:23:31,439 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:23:31,444 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:23:32,356 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:23:32,357 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:23:32,357 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1927614331] [2024-06-28 01:23:32,357 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1927614331] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:23:32,357 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:23:32,357 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-28 01:23:32,357 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [103179133] [2024-06-28 01:23:32,357 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:23:32,357 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-28 01:23:32,357 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:23:32,357 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-28 01:23:32,357 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=97, Unknown=0, NotChecked=0, Total=132 [2024-06-28 01:23:32,458 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 38 [2024-06-28 01:23:32,458 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 280 places, 453 transitions, 6376 flow. Second operand has 12 states, 12 states have (on average 10.25) internal successors, (123), 12 states have internal predecessors, (123), 0 states have call successors, (0), 0 states 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 01:23:32,458 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:23:32,458 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 38 [2024-06-28 01:23:32,458 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:23:33,300 INFO L124 PetriNetUnfolderBase]: 1862/3288 cut-off events. [2024-06-28 01:23:33,300 INFO L125 PetriNetUnfolderBase]: For 123779/123779 co-relation queries the response was YES. [2024-06-28 01:23:33,324 INFO L83 FinitePrefix]: Finished finitePrefix Result has 22068 conditions, 3288 events. 1862/3288 cut-off events. For 123779/123779 co-relation queries the response was YES. Maximal size of possible extension queue 242. Compared 19887 event pairs, 230 based on Foata normal form. 3/3092 useless extension candidates. Maximal degree in co-relation 21932. Up to 1515 conditions per place. [2024-06-28 01:23:33,334 INFO L140 encePairwiseOnDemand]: 25/38 looper letters, 258 selfloop transitions, 239 changer transitions 0/505 dead transitions. [2024-06-28 01:23:33,334 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 291 places, 505 transitions, 7910 flow [2024-06-28 01:23:33,334 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-28 01:23:33,334 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-28 01:23:33,335 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 210 transitions. [2024-06-28 01:23:33,335 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4605263157894737 [2024-06-28 01:23:33,335 INFO L175 Difference]: Start difference. First operand has 280 places, 453 transitions, 6376 flow. Second operand 12 states and 210 transitions. [2024-06-28 01:23:33,335 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 291 places, 505 transitions, 7910 flow [2024-06-28 01:23:33,871 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 282 places, 505 transitions, 7746 flow, removed 13 selfloop flow, removed 9 redundant places. [2024-06-28 01:23:33,877 INFO L231 Difference]: Finished difference. Result has 283 places, 459 transitions, 6844 flow [2024-06-28 01:23:33,878 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=6212, PETRI_DIFFERENCE_MINUEND_PLACES=271, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=453, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=236, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=217, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=6844, PETRI_PLACES=283, PETRI_TRANSITIONS=459} [2024-06-28 01:23:33,878 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 241 predicate places. [2024-06-28 01:23:33,878 INFO L495 AbstractCegarLoop]: Abstraction has has 283 places, 459 transitions, 6844 flow [2024-06-28 01:23:33,878 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 10.25) internal successors, (123), 12 states have internal predecessors, (123), 0 states have call successors, (0), 0 states 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 01:23:33,878 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:23:33,878 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 01:23:33,878 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable84 [2024-06-28 01:23:33,878 INFO L420 AbstractCegarLoop]: === Iteration 86 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:23:33,878 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:23:33,878 INFO L85 PathProgramCache]: Analyzing trace with hash -1619232958, now seen corresponding path program 1 times [2024-06-28 01:23:33,879 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:23:33,879 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [49670974] [2024-06-28 01:23:33,879 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:23:33,879 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:23:33,887 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:23:34,894 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 01:23:34,894 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:23:34,894 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [49670974] [2024-06-28 01:23:34,894 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [49670974] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:23:34,894 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:23:34,894 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-28 01:23:34,894 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1739361638] [2024-06-28 01:23:34,894 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:23:34,895 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-28 01:23:34,895 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:23:34,895 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-28 01:23:34,895 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=102, Unknown=0, NotChecked=0, Total=132 [2024-06-28 01:23:34,982 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 38 [2024-06-28 01:23:34,982 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 283 places, 459 transitions, 6844 flow. Second operand has 12 states, 12 states have (on average 10.25) internal successors, (123), 12 states have internal predecessors, (123), 0 states have call successors, (0), 0 states 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 01:23:34,982 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:23:34,982 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 38 [2024-06-28 01:23:34,982 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:23:35,763 INFO L124 PetriNetUnfolderBase]: 1885/3334 cut-off events. [2024-06-28 01:23:35,763 INFO L125 PetriNetUnfolderBase]: For 124686/124686 co-relation queries the response was YES. [2024-06-28 01:23:35,786 INFO L83 FinitePrefix]: Finished finitePrefix Result has 22720 conditions, 3334 events. 1885/3334 cut-off events. For 124686/124686 co-relation queries the response was YES. Maximal size of possible extension queue 246. Compared 20230 event pairs, 220 based on Foata normal form. 2/3134 useless extension candidates. Maximal degree in co-relation 22583. Up to 2654 conditions per place. [2024-06-28 01:23:35,796 INFO L140 encePairwiseOnDemand]: 27/38 looper letters, 380 selfloop transitions, 111 changer transitions 0/499 dead transitions. [2024-06-28 01:23:35,796 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 292 places, 499 transitions, 8047 flow [2024-06-28 01:23:35,797 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 01:23:35,797 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 01:23:35,797 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 168 transitions. [2024-06-28 01:23:35,797 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4421052631578947 [2024-06-28 01:23:35,797 INFO L175 Difference]: Start difference. First operand has 283 places, 459 transitions, 6844 flow. Second operand 10 states and 168 transitions. [2024-06-28 01:23:35,797 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 292 places, 499 transitions, 8047 flow [2024-06-28 01:23:36,288 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 284 places, 499 transitions, 7657 flow, removed 36 selfloop flow, removed 8 redundant places. [2024-06-28 01:23:36,294 INFO L231 Difference]: Finished difference. Result has 287 places, 465 transitions, 6824 flow [2024-06-28 01:23:36,294 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=6454, PETRI_DIFFERENCE_MINUEND_PLACES=275, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=459, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=105, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=348, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=6824, PETRI_PLACES=287, PETRI_TRANSITIONS=465} [2024-06-28 01:23:36,295 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 245 predicate places. [2024-06-28 01:23:36,295 INFO L495 AbstractCegarLoop]: Abstraction has has 287 places, 465 transitions, 6824 flow [2024-06-28 01:23:36,295 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 10.25) internal successors, (123), 12 states have internal predecessors, (123), 0 states have call successors, (0), 0 states 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 01:23:36,295 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:23:36,295 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 01:23:36,295 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable85 [2024-06-28 01:23:36,295 INFO L420 AbstractCegarLoop]: === Iteration 87 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:23:36,295 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:23:36,295 INFO L85 PathProgramCache]: Analyzing trace with hash -1619479222, now seen corresponding path program 7 times [2024-06-28 01:23:36,295 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:23:36,295 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [529114079] [2024-06-28 01:23:36,296 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:23:36,296 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:23:36,302 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:23:37,132 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:23:37,132 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:23:37,133 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [529114079] [2024-06-28 01:23:37,133 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [529114079] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:23:37,133 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:23:37,133 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-28 01:23:37,133 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [490611043] [2024-06-28 01:23:37,133 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:23:37,133 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-28 01:23:37,133 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:23:37,134 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-28 01:23:37,134 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=94, Unknown=0, NotChecked=0, Total=132 [2024-06-28 01:23:37,231 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 38 [2024-06-28 01:23:37,232 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 287 places, 465 transitions, 6824 flow. Second operand has 12 states, 12 states have (on average 10.25) internal successors, (123), 12 states have internal predecessors, (123), 0 states have call successors, (0), 0 states 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 01:23:37,232 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:23:37,232 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 38 [2024-06-28 01:23:37,232 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:23:37,939 INFO L124 PetriNetUnfolderBase]: 1883/3333 cut-off events. [2024-06-28 01:23:37,939 INFO L125 PetriNetUnfolderBase]: For 118489/118489 co-relation queries the response was YES. [2024-06-28 01:23:37,962 INFO L83 FinitePrefix]: Finished finitePrefix Result has 22894 conditions, 3333 events. 1883/3333 cut-off events. For 118489/118489 co-relation queries the response was YES. Maximal size of possible extension queue 245. Compared 20288 event pairs, 283 based on Foata normal form. 1/3131 useless extension candidates. Maximal degree in co-relation 22753. Up to 2499 conditions per place. [2024-06-28 01:23:37,973 INFO L140 encePairwiseOnDemand]: 26/38 looper letters, 403 selfloop transitions, 111 changer transitions 0/522 dead transitions. [2024-06-28 01:23:37,973 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 297 places, 522 transitions, 8364 flow [2024-06-28 01:23:37,973 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 01:23:37,973 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 01:23:37,974 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 178 transitions. [2024-06-28 01:23:37,974 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4258373205741627 [2024-06-28 01:23:37,974 INFO L175 Difference]: Start difference. First operand has 287 places, 465 transitions, 6824 flow. Second operand 11 states and 178 transitions. [2024-06-28 01:23:37,974 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 297 places, 522 transitions, 8364 flow [2024-06-28 01:23:38,491 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 291 places, 522 transitions, 8201 flow, removed 10 selfloop flow, removed 6 redundant places. [2024-06-28 01:23:38,498 INFO L231 Difference]: Finished difference. Result has 293 places, 478 transitions, 7076 flow [2024-06-28 01:23:38,499 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=6661, PETRI_DIFFERENCE_MINUEND_PLACES=281, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=465, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=98, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=361, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=7076, PETRI_PLACES=293, PETRI_TRANSITIONS=478} [2024-06-28 01:23:38,499 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 251 predicate places. [2024-06-28 01:23:38,499 INFO L495 AbstractCegarLoop]: Abstraction has has 293 places, 478 transitions, 7076 flow [2024-06-28 01:23:38,500 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 10.25) internal successors, (123), 12 states have internal predecessors, (123), 0 states have call successors, (0), 0 states 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 01:23:38,500 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:23:38,500 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 01:23:38,500 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable86 [2024-06-28 01:23:38,500 INFO L420 AbstractCegarLoop]: === Iteration 88 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:23:38,500 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:23:38,501 INFO L85 PathProgramCache]: Analyzing trace with hash 934794084, now seen corresponding path program 2 times [2024-06-28 01:23:38,501 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:23:38,501 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [881238880] [2024-06-28 01:23:38,501 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:23:38,501 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:23:38,510 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:23:39,521 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 01:23:39,521 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:23:39,521 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [881238880] [2024-06-28 01:23:39,521 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [881238880] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:23:39,521 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:23:39,521 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-28 01:23:39,521 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1860725308] [2024-06-28 01:23:39,521 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:23:39,521 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-28 01:23:39,521 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:23:39,522 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-28 01:23:39,522 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=102, Unknown=0, NotChecked=0, Total=132 [2024-06-28 01:23:39,613 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 38 [2024-06-28 01:23:39,613 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 293 places, 478 transitions, 7076 flow. Second operand has 12 states, 12 states have (on average 10.25) internal successors, (123), 12 states have internal predecessors, (123), 0 states have call successors, (0), 0 states 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 01:23:39,613 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:23:39,613 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 38 [2024-06-28 01:23:39,613 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:23:40,519 INFO L124 PetriNetUnfolderBase]: 1900/3377 cut-off events. [2024-06-28 01:23:40,520 INFO L125 PetriNetUnfolderBase]: For 124507/124507 co-relation queries the response was YES. [2024-06-28 01:23:40,541 INFO L83 FinitePrefix]: Finished finitePrefix Result has 23160 conditions, 3377 events. 1900/3377 cut-off events. For 124507/124507 co-relation queries the response was YES. Maximal size of possible extension queue 252. Compared 20659 event pairs, 208 based on Foata normal form. 2/3174 useless extension candidates. Maximal degree in co-relation 23017. Up to 2690 conditions per place. [2024-06-28 01:23:40,550 INFO L140 encePairwiseOnDemand]: 27/38 looper letters, 415 selfloop transitions, 97 changer transitions 0/520 dead transitions. [2024-06-28 01:23:40,550 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 302 places, 520 transitions, 8378 flow [2024-06-28 01:23:40,551 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 01:23:40,551 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 01:23:40,551 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 169 transitions. [2024-06-28 01:23:40,551 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44473684210526315 [2024-06-28 01:23:40,551 INFO L175 Difference]: Start difference. First operand has 293 places, 478 transitions, 7076 flow. Second operand 10 states and 169 transitions. [2024-06-28 01:23:40,551 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 302 places, 520 transitions, 8378 flow [2024-06-28 01:23:41,051 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 296 places, 520 transitions, 8210 flow, removed 20 selfloop flow, removed 6 redundant places. [2024-06-28 01:23:41,057 INFO L231 Difference]: Finished difference. Result has 298 places, 482 transitions, 7183 flow [2024-06-28 01:23:41,057 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=6926, PETRI_DIFFERENCE_MINUEND_PLACES=287, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=478, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=93, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=381, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=7183, PETRI_PLACES=298, PETRI_TRANSITIONS=482} [2024-06-28 01:23:41,057 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 256 predicate places. [2024-06-28 01:23:41,058 INFO L495 AbstractCegarLoop]: Abstraction has has 298 places, 482 transitions, 7183 flow [2024-06-28 01:23:41,058 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 10.25) internal successors, (123), 12 states have internal predecessors, (123), 0 states have call successors, (0), 0 states 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 01:23:41,058 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:23:41,058 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 01:23:41,058 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable87 [2024-06-28 01:23:41,058 INFO L420 AbstractCegarLoop]: === Iteration 89 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:23:41,058 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:23:41,058 INFO L85 PathProgramCache]: Analyzing trace with hash 2094069402, now seen corresponding path program 8 times [2024-06-28 01:23:41,058 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:23:41,058 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1543148859] [2024-06-28 01:23:41,058 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:23:41,058 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:23:41,065 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:23:41,891 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 01:23:41,891 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:23:41,891 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1543148859] [2024-06-28 01:23:41,891 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1543148859] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:23:41,891 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:23:41,891 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-28 01:23:41,891 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [674321307] [2024-06-28 01:23:41,892 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:23:41,892 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-28 01:23:41,892 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:23:41,893 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-28 01:23:41,893 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=94, Unknown=0, NotChecked=0, Total=132 [2024-06-28 01:23:42,006 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 38 [2024-06-28 01:23:42,006 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 298 places, 482 transitions, 7183 flow. Second operand has 12 states, 12 states have (on average 10.25) internal successors, (123), 12 states have internal predecessors, (123), 0 states have call successors, (0), 0 states 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 01:23:42,006 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:23:42,006 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 38 [2024-06-28 01:23:42,006 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:23:42,849 INFO L124 PetriNetUnfolderBase]: 1906/3386 cut-off events. [2024-06-28 01:23:42,849 INFO L125 PetriNetUnfolderBase]: For 125048/125048 co-relation queries the response was YES. [2024-06-28 01:23:42,872 INFO L83 FinitePrefix]: Finished finitePrefix Result has 23334 conditions, 3386 events. 1906/3386 cut-off events. For 125048/125048 co-relation queries the response was YES. Maximal size of possible extension queue 251. Compared 20746 event pairs, 262 based on Foata normal form. 1/3180 useless extension candidates. Maximal degree in co-relation 23190. Up to 2539 conditions per place. [2024-06-28 01:23:42,883 INFO L140 encePairwiseOnDemand]: 26/38 looper letters, 431 selfloop transitions, 102 changer transitions 0/541 dead transitions. [2024-06-28 01:23:42,883 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 308 places, 541 transitions, 8794 flow [2024-06-28 01:23:42,884 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 01:23:42,884 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 01:23:42,884 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 179 transitions. [2024-06-28 01:23:42,884 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.42822966507177035 [2024-06-28 01:23:42,884 INFO L175 Difference]: Start difference. First operand has 298 places, 482 transitions, 7183 flow. Second operand 11 states and 179 transitions. [2024-06-28 01:23:42,884 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 308 places, 541 transitions, 8794 flow [2024-06-28 01:23:43,439 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 302 places, 541 transitions, 8636 flow, removed 6 selfloop flow, removed 6 redundant places. [2024-06-28 01:23:43,446 INFO L231 Difference]: Finished difference. Result has 304 places, 499 transitions, 7458 flow [2024-06-28 01:23:43,446 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=7025, PETRI_DIFFERENCE_MINUEND_PLACES=292, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=482, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=85, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=393, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=7458, PETRI_PLACES=304, PETRI_TRANSITIONS=499} [2024-06-28 01:23:43,447 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 262 predicate places. [2024-06-28 01:23:43,447 INFO L495 AbstractCegarLoop]: Abstraction has has 304 places, 499 transitions, 7458 flow [2024-06-28 01:23:43,447 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 10.25) internal successors, (123), 12 states have internal predecessors, (123), 0 states have call successors, (0), 0 states 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 01:23:43,447 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:23:43,447 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 01:23:43,447 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable88 [2024-06-28 01:23:43,447 INFO L420 AbstractCegarLoop]: === Iteration 90 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:23:43,447 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:23:43,447 INFO L85 PathProgramCache]: Analyzing trace with hash 1518317120, now seen corresponding path program 9 times [2024-06-28 01:23:43,447 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:23:43,447 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1004574902] [2024-06-28 01:23:43,448 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:23:43,448 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:23:43,458 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:23:44,293 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 01:23:44,293 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:23:44,293 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1004574902] [2024-06-28 01:23:44,293 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1004574902] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:23:44,293 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:23:44,294 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-28 01:23:44,294 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1350326983] [2024-06-28 01:23:44,294 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:23:44,294 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-28 01:23:44,294 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:23:44,294 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-28 01:23:44,295 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=93, Unknown=0, NotChecked=0, Total=132 [2024-06-28 01:23:44,397 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 38 [2024-06-28 01:23:44,397 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 304 places, 499 transitions, 7458 flow. Second operand has 12 states, 12 states have (on average 10.25) internal successors, (123), 12 states have internal predecessors, (123), 0 states have call successors, (0), 0 states 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 01:23:44,397 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:23:44,397 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 38 [2024-06-28 01:23:44,397 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:23:45,257 INFO L124 PetriNetUnfolderBase]: 1925/3413 cut-off events. [2024-06-28 01:23:45,257 INFO L125 PetriNetUnfolderBase]: For 135674/135674 co-relation queries the response was YES. [2024-06-28 01:23:45,280 INFO L83 FinitePrefix]: Finished finitePrefix Result has 23670 conditions, 3413 events. 1925/3413 cut-off events. For 135674/135674 co-relation queries the response was YES. Maximal size of possible extension queue 253. Compared 20864 event pairs, 236 based on Foata normal form. 3/3205 useless extension candidates. Maximal degree in co-relation 23524. Up to 1668 conditions per place. [2024-06-28 01:23:45,291 INFO L140 encePairwiseOnDemand]: 25/38 looper letters, 326 selfloop transitions, 206 changer transitions 0/540 dead transitions. [2024-06-28 01:23:45,291 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 314 places, 540 transitions, 8806 flow [2024-06-28 01:23:45,291 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 01:23:45,291 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 01:23:45,291 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 191 transitions. [2024-06-28 01:23:45,291 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4569377990430622 [2024-06-28 01:23:45,292 INFO L175 Difference]: Start difference. First operand has 304 places, 499 transitions, 7458 flow. Second operand 11 states and 191 transitions. [2024-06-28 01:23:45,292 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 314 places, 540 transitions, 8806 flow [2024-06-28 01:23:45,914 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 309 places, 540 transitions, 8631 flow, removed 23 selfloop flow, removed 5 redundant places. [2024-06-28 01:23:45,921 INFO L231 Difference]: Finished difference. Result has 310 places, 502 transitions, 7791 flow [2024-06-28 01:23:45,921 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=7286, PETRI_DIFFERENCE_MINUEND_PLACES=299, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=499, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=203, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=293, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=7791, PETRI_PLACES=310, PETRI_TRANSITIONS=502} [2024-06-28 01:23:45,921 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 268 predicate places. [2024-06-28 01:23:45,921 INFO L495 AbstractCegarLoop]: Abstraction has has 310 places, 502 transitions, 7791 flow [2024-06-28 01:23:45,921 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 10.25) internal successors, (123), 12 states have internal predecessors, (123), 0 states have call successors, (0), 0 states 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 01:23:45,921 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:23:45,921 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 01:23:45,922 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable89 [2024-06-28 01:23:45,922 INFO L420 AbstractCegarLoop]: === Iteration 91 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:23:45,922 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:23:45,922 INFO L85 PathProgramCache]: Analyzing trace with hash 1518490100, now seen corresponding path program 10 times [2024-06-28 01:23:45,922 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:23:45,922 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [644667620] [2024-06-28 01:23:45,922 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:23:45,922 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:23:45,928 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:23:46,753 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 01:23:46,754 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:23:46,754 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [644667620] [2024-06-28 01:23:46,754 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [644667620] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:23:46,754 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:23:46,754 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-28 01:23:46,754 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1357308764] [2024-06-28 01:23:46,754 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:23:46,754 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-28 01:23:46,754 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:23:46,754 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-28 01:23:46,754 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=93, Unknown=0, NotChecked=0, Total=132 [2024-06-28 01:23:46,872 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 38 [2024-06-28 01:23:46,873 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 310 places, 502 transitions, 7791 flow. Second operand has 12 states, 12 states have (on average 10.25) internal successors, (123), 12 states have internal predecessors, (123), 0 states have call successors, (0), 0 states 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 01:23:46,873 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:23:46,873 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 38 [2024-06-28 01:23:46,873 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:23:47,776 INFO L124 PetriNetUnfolderBase]: 1944/3441 cut-off events. [2024-06-28 01:23:47,776 INFO L125 PetriNetUnfolderBase]: For 141863/141863 co-relation queries the response was YES. [2024-06-28 01:23:47,797 INFO L83 FinitePrefix]: Finished finitePrefix Result has 24394 conditions, 3441 events. 1944/3441 cut-off events. For 141863/141863 co-relation queries the response was YES. Maximal size of possible extension queue 255. Compared 21026 event pairs, 236 based on Foata normal form. 3/3229 useless extension candidates. Maximal degree in co-relation 24248. Up to 1696 conditions per place. [2024-06-28 01:23:47,807 INFO L140 encePairwiseOnDemand]: 25/38 looper letters, 351 selfloop transitions, 184 changer transitions 0/543 dead transitions. [2024-06-28 01:23:47,807 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 320 places, 543 transitions, 9148 flow [2024-06-28 01:23:47,808 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 01:23:47,808 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 01:23:47,808 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 192 transitions. [2024-06-28 01:23:47,808 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45933014354066987 [2024-06-28 01:23:47,808 INFO L175 Difference]: Start difference. First operand has 310 places, 502 transitions, 7791 flow. Second operand 11 states and 192 transitions. [2024-06-28 01:23:47,808 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 320 places, 543 transitions, 9148 flow [2024-06-28 01:23:48,420 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 311 places, 543 transitions, 8677 flow, removed 32 selfloop flow, removed 9 redundant places. [2024-06-28 01:23:48,426 INFO L231 Difference]: Finished difference. Result has 312 places, 505 transitions, 7787 flow [2024-06-28 01:23:48,427 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=7320, PETRI_DIFFERENCE_MINUEND_PLACES=301, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=502, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=181, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=318, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=7787, PETRI_PLACES=312, PETRI_TRANSITIONS=505} [2024-06-28 01:23:48,427 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 270 predicate places. [2024-06-28 01:23:48,427 INFO L495 AbstractCegarLoop]: Abstraction has has 312 places, 505 transitions, 7787 flow [2024-06-28 01:23:48,427 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 10.25) internal successors, (123), 12 states have internal predecessors, (123), 0 states have call successors, (0), 0 states 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 01:23:48,427 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:23:48,427 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 01:23:48,427 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable90 [2024-06-28 01:23:48,427 INFO L420 AbstractCegarLoop]: === Iteration 92 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:23:48,428 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:23:48,428 INFO L85 PathProgramCache]: Analyzing trace with hash 928113956, now seen corresponding path program 6 times [2024-06-28 01:23:48,428 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:23:48,428 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2015478974] [2024-06-28 01:23:48,428 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:23:48,428 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:23:48,433 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:23:49,422 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:23:49,422 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:23:49,422 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2015478974] [2024-06-28 01:23:49,422 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2015478974] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:23:49,423 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:23:49,423 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-28 01:23:49,423 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [754845327] [2024-06-28 01:23:49,423 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:23:49,423 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-28 01:23:49,423 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:23:49,423 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-28 01:23:49,423 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=98, Unknown=0, NotChecked=0, Total=132 [2024-06-28 01:23:49,526 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 38 [2024-06-28 01:23:49,527 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 312 places, 505 transitions, 7787 flow. Second operand has 12 states, 12 states have (on average 10.25) internal successors, (123), 12 states have internal predecessors, (123), 0 states have call successors, (0), 0 states 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 01:23:49,527 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:23:49,527 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 38 [2024-06-28 01:23:49,527 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:23:50,398 INFO L124 PetriNetUnfolderBase]: 1961/3480 cut-off events. [2024-06-28 01:23:50,398 INFO L125 PetriNetUnfolderBase]: For 140824/140824 co-relation queries the response was YES. [2024-06-28 01:23:50,419 INFO L83 FinitePrefix]: Finished finitePrefix Result has 24506 conditions, 3480 events. 1961/3480 cut-off events. For 140824/140824 co-relation queries the response was YES. Maximal size of possible extension queue 255. Compared 21355 event pairs, 276 based on Foata normal form. 2/3265 useless extension candidates. Maximal degree in co-relation 24359. Up to 2956 conditions per place. [2024-06-28 01:23:50,428 INFO L140 encePairwiseOnDemand]: 27/38 looper letters, 474 selfloop transitions, 57 changer transitions 0/539 dead transitions. [2024-06-28 01:23:50,428 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 322 places, 539 transitions, 9059 flow [2024-06-28 01:23:50,429 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 01:23:50,429 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 01:23:50,429 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 174 transitions. [2024-06-28 01:23:50,429 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.41626794258373206 [2024-06-28 01:23:50,429 INFO L175 Difference]: Start difference. First operand has 312 places, 505 transitions, 7787 flow. Second operand 11 states and 174 transitions. [2024-06-28 01:23:50,429 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 322 places, 539 transitions, 9059 flow [2024-06-28 01:23:51,011 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 313 places, 539 transitions, 8626 flow, removed 35 selfloop flow, removed 9 redundant places. [2024-06-28 01:23:51,018 INFO L231 Difference]: Finished difference. Result has 314 places, 506 transitions, 7504 flow [2024-06-28 01:23:51,018 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=7354, PETRI_DIFFERENCE_MINUEND_PLACES=303, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=505, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=56, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=448, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=7504, PETRI_PLACES=314, PETRI_TRANSITIONS=506} [2024-06-28 01:23:51,019 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 272 predicate places. [2024-06-28 01:23:51,019 INFO L495 AbstractCegarLoop]: Abstraction has has 314 places, 506 transitions, 7504 flow [2024-06-28 01:23:51,019 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 10.25) internal successors, (123), 12 states have internal predecessors, (123), 0 states have call successors, (0), 0 states 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 01:23:51,019 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:23:51,019 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 01:23:51,019 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable91 [2024-06-28 01:23:51,019 INFO L420 AbstractCegarLoop]: === Iteration 93 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:23:51,020 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:23:51,020 INFO L85 PathProgramCache]: Analyzing trace with hash 1518312470, now seen corresponding path program 11 times [2024-06-28 01:23:51,020 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:23:51,020 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1572570490] [2024-06-28 01:23:51,020 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:23:51,020 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:23:51,026 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:23:51,802 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 01:23:51,802 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:23:51,802 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1572570490] [2024-06-28 01:23:51,802 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1572570490] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:23:51,802 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:23:51,802 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-28 01:23:51,802 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [172545341] [2024-06-28 01:23:51,802 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:23:51,802 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-28 01:23:51,803 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:23:51,803 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-28 01:23:51,803 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=97, Unknown=0, NotChecked=0, Total=132 [2024-06-28 01:23:51,904 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 38 [2024-06-28 01:23:51,904 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 314 places, 506 transitions, 7504 flow. Second operand has 12 states, 12 states have (on average 10.25) internal successors, (123), 12 states have internal predecessors, (123), 0 states have call successors, (0), 0 states 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 01:23:51,904 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:23:51,905 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 38 [2024-06-28 01:23:51,905 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:23:52,927 INFO L124 PetriNetUnfolderBase]: 1992/3527 cut-off events. [2024-06-28 01:23:52,928 INFO L125 PetriNetUnfolderBase]: For 150649/150649 co-relation queries the response was YES. [2024-06-28 01:23:52,951 INFO L83 FinitePrefix]: Finished finitePrefix Result has 24731 conditions, 3527 events. 1992/3527 cut-off events. For 150649/150649 co-relation queries the response was YES. Maximal size of possible extension queue 259. Compared 21638 event pairs, 239 based on Foata normal form. 1/3305 useless extension candidates. Maximal degree in co-relation 24583. Up to 1712 conditions per place. [2024-06-28 01:23:52,962 INFO L140 encePairwiseOnDemand]: 25/38 looper letters, 327 selfloop transitions, 218 changer transitions 0/553 dead transitions. [2024-06-28 01:23:52,962 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 325 places, 553 transitions, 9137 flow [2024-06-28 01:23:52,963 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-28 01:23:52,963 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-28 01:23:52,963 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 208 transitions. [2024-06-28 01:23:52,963 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45614035087719296 [2024-06-28 01:23:52,963 INFO L175 Difference]: Start difference. First operand has 314 places, 506 transitions, 7504 flow. Second operand 12 states and 208 transitions. [2024-06-28 01:23:52,963 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 325 places, 553 transitions, 9137 flow [2024-06-28 01:23:53,732 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 316 places, 553 transitions, 8997 flow, removed 14 selfloop flow, removed 9 redundant places. [2024-06-28 01:23:53,739 INFO L231 Difference]: Finished difference. Result has 318 places, 511 transitions, 7981 flow [2024-06-28 01:23:53,739 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=7364, PETRI_DIFFERENCE_MINUEND_PLACES=305, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=506, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=215, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=290, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=7981, PETRI_PLACES=318, PETRI_TRANSITIONS=511} [2024-06-28 01:23:53,739 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 276 predicate places. [2024-06-28 01:23:53,739 INFO L495 AbstractCegarLoop]: Abstraction has has 318 places, 511 transitions, 7981 flow [2024-06-28 01:23:53,739 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 10.25) internal successors, (123), 12 states have internal predecessors, (123), 0 states have call successors, (0), 0 states 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 01:23:53,740 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:23:53,740 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 01:23:53,740 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable92 [2024-06-28 01:23:53,740 INFO L420 AbstractCegarLoop]: === Iteration 94 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:23:53,740 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:23:53,740 INFO L85 PathProgramCache]: Analyzing trace with hash 1237623774, now seen corresponding path program 3 times [2024-06-28 01:23:53,740 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:23:53,740 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1569593086] [2024-06-28 01:23:53,740 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:23:53,740 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:23:53,750 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:23:54,879 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 01:23:54,879 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:23:54,879 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1569593086] [2024-06-28 01:23:54,879 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1569593086] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:23:54,880 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:23:54,880 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-28 01:23:54,880 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1737039336] [2024-06-28 01:23:54,880 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:23:54,880 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-28 01:23:54,880 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:23:54,880 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-28 01:23:54,880 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=102, Unknown=0, NotChecked=0, Total=132 [2024-06-28 01:23:54,973 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 38 [2024-06-28 01:23:54,974 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 318 places, 511 transitions, 7981 flow. Second operand has 12 states, 12 states have (on average 10.25) internal successors, (123), 12 states have internal predecessors, (123), 0 states have call successors, (0), 0 states 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 01:23:54,974 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:23:54,974 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 38 [2024-06-28 01:23:54,974 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:23:55,953 INFO L124 PetriNetUnfolderBase]: 2034/3605 cut-off events. [2024-06-28 01:23:55,954 INFO L125 PetriNetUnfolderBase]: For 159292/159292 co-relation queries the response was YES. [2024-06-28 01:23:55,977 INFO L83 FinitePrefix]: Finished finitePrefix Result has 25742 conditions, 3605 events. 2034/3605 cut-off events. For 159292/159292 co-relation queries the response was YES. Maximal size of possible extension queue 267. Compared 22260 event pairs, 216 based on Foata normal form. 2/3379 useless extension candidates. Maximal degree in co-relation 25592. Up to 2915 conditions per place. [2024-06-28 01:23:55,988 INFO L140 encePairwiseOnDemand]: 28/38 looper letters, 449 selfloop transitions, 96 changer transitions 0/553 dead transitions. [2024-06-28 01:23:55,988 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 327 places, 553 transitions, 9371 flow [2024-06-28 01:23:55,988 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 01:23:55,988 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 01:23:55,988 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 167 transitions. [2024-06-28 01:23:55,989 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4394736842105263 [2024-06-28 01:23:55,989 INFO L175 Difference]: Start difference. First operand has 318 places, 511 transitions, 7981 flow. Second operand 10 states and 167 transitions. [2024-06-28 01:23:55,989 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 327 places, 553 transitions, 9371 flow [2024-06-28 01:23:56,579 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 319 places, 553 transitions, 9032 flow, removed 33 selfloop flow, removed 8 redundant places. [2024-06-28 01:23:56,586 INFO L231 Difference]: Finished difference. Result has 320 places, 516 transitions, 7942 flow [2024-06-28 01:23:56,586 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=7647, PETRI_DIFFERENCE_MINUEND_PLACES=310, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=511, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=91, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=419, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=7942, PETRI_PLACES=320, PETRI_TRANSITIONS=516} [2024-06-28 01:23:56,587 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 278 predicate places. [2024-06-28 01:23:56,587 INFO L495 AbstractCegarLoop]: Abstraction has has 320 places, 516 transitions, 7942 flow [2024-06-28 01:23:56,587 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 10.25) internal successors, (123), 12 states have internal predecessors, (123), 0 states have call successors, (0), 0 states 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 01:23:56,587 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:23:56,587 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 01:23:56,587 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable93 [2024-06-28 01:23:56,587 INFO L420 AbstractCegarLoop]: === Iteration 95 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:23:56,587 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:23:56,587 INFO L85 PathProgramCache]: Analyzing trace with hash 1237377510, now seen corresponding path program 12 times [2024-06-28 01:23:56,587 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:23:56,588 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [4534018] [2024-06-28 01:23:56,588 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:23:56,588 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:23:56,610 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:23:57,440 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:23:57,440 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:23:57,440 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [4534018] [2024-06-28 01:23:57,441 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [4534018] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:23:57,441 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:23:57,441 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-28 01:23:57,441 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1857502398] [2024-06-28 01:23:57,441 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:23:57,441 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-28 01:23:57,441 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:23:57,441 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-28 01:23:57,441 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=94, Unknown=0, NotChecked=0, Total=132 [2024-06-28 01:23:57,568 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 38 [2024-06-28 01:23:57,568 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 320 places, 516 transitions, 7942 flow. Second operand has 12 states, 12 states have (on average 10.25) internal successors, (123), 12 states have internal predecessors, (123), 0 states have call successors, (0), 0 states 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 01:23:57,568 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:23:57,568 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 38 [2024-06-28 01:23:57,568 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:23:58,394 INFO L124 PetriNetUnfolderBase]: 2032/3600 cut-off events. [2024-06-28 01:23:58,395 INFO L125 PetriNetUnfolderBase]: For 152234/152234 co-relation queries the response was YES. [2024-06-28 01:23:58,424 INFO L83 FinitePrefix]: Finished finitePrefix Result has 25695 conditions, 3600 events. 2032/3600 cut-off events. For 152234/152234 co-relation queries the response was YES. Maximal size of possible extension queue 264. Compared 22205 event pairs, 274 based on Foata normal form. 1/3372 useless extension candidates. Maximal degree in co-relation 25543. Up to 2739 conditions per place. [2024-06-28 01:23:58,437 INFO L140 encePairwiseOnDemand]: 26/38 looper letters, 440 selfloop transitions, 112 changer transitions 0/560 dead transitions. [2024-06-28 01:23:58,438 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 330 places, 560 transitions, 9428 flow [2024-06-28 01:23:58,438 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 01:23:58,438 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 01:23:58,438 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 176 transitions. [2024-06-28 01:23:58,439 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.42105263157894735 [2024-06-28 01:23:58,439 INFO L175 Difference]: Start difference. First operand has 320 places, 516 transitions, 7942 flow. Second operand 11 states and 176 transitions. [2024-06-28 01:23:58,439 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 330 places, 560 transitions, 9428 flow [2024-06-28 01:23:59,035 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 323 places, 560 transitions, 9234 flow, removed 7 selfloop flow, removed 7 redundant places. [2024-06-28 01:23:59,042 INFO L231 Difference]: Finished difference. Result has 325 places, 520 transitions, 8063 flow [2024-06-28 01:23:59,043 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=7748, PETRI_DIFFERENCE_MINUEND_PLACES=313, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=516, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=108, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=405, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=8063, PETRI_PLACES=325, PETRI_TRANSITIONS=520} [2024-06-28 01:23:59,043 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 283 predicate places. [2024-06-28 01:23:59,043 INFO L495 AbstractCegarLoop]: Abstraction has has 325 places, 520 transitions, 8063 flow [2024-06-28 01:23:59,043 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 10.25) internal successors, (123), 12 states have internal predecessors, (123), 0 states have call successors, (0), 0 states 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 01:23:59,043 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:23:59,043 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 01:23:59,044 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable94 [2024-06-28 01:23:59,044 INFO L420 AbstractCegarLoop]: === Iteration 96 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:23:59,044 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:23:59,044 INFO L85 PathProgramCache]: Analyzing trace with hash 1164770994, now seen corresponding path program 4 times [2024-06-28 01:23:59,044 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:23:59,044 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [504777397] [2024-06-28 01:23:59,044 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:23:59,044 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:23:59,060 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:24:00,127 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 01:24:00,128 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:24:00,128 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [504777397] [2024-06-28 01:24:00,128 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [504777397] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:24:00,128 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:24:00,128 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-28 01:24:00,128 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1195883532] [2024-06-28 01:24:00,128 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:24:00,128 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-28 01:24:00,128 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:24:00,128 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-28 01:24:00,129 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=101, Unknown=0, NotChecked=0, Total=132 [2024-06-28 01:24:00,232 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 38 [2024-06-28 01:24:00,232 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 325 places, 520 transitions, 8063 flow. Second operand has 12 states, 12 states have (on average 10.25) internal successors, (123), 12 states have internal predecessors, (123), 0 states have call successors, (0), 0 states 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 01:24:00,232 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:24:00,232 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 38 [2024-06-28 01:24:00,232 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:24:01,143 INFO L124 PetriNetUnfolderBase]: 2049/3641 cut-off events. [2024-06-28 01:24:01,143 INFO L125 PetriNetUnfolderBase]: For 158420/158420 co-relation queries the response was YES. [2024-06-28 01:24:01,171 INFO L83 FinitePrefix]: Finished finitePrefix Result has 25883 conditions, 3641 events. 2049/3641 cut-off events. For 158420/158420 co-relation queries the response was YES. Maximal size of possible extension queue 269. Compared 22598 event pairs, 240 based on Foata normal form. 2/3412 useless extension candidates. Maximal degree in co-relation 25729. Up to 2919 conditions per place. [2024-06-28 01:24:01,183 INFO L140 encePairwiseOnDemand]: 27/38 looper letters, 442 selfloop transitions, 105 changer transitions 0/555 dead transitions. [2024-06-28 01:24:01,183 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 334 places, 555 transitions, 9353 flow [2024-06-28 01:24:01,184 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 01:24:01,184 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 01:24:01,184 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 166 transitions. [2024-06-28 01:24:01,184 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4368421052631579 [2024-06-28 01:24:01,184 INFO L175 Difference]: Start difference. First operand has 325 places, 520 transitions, 8063 flow. Second operand 10 states and 166 transitions. [2024-06-28 01:24:01,184 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 334 places, 555 transitions, 9353 flow [2024-06-28 01:24:01,882 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 327 places, 555 transitions, 9103 flow, removed 17 selfloop flow, removed 7 redundant places. [2024-06-28 01:24:01,888 INFO L231 Difference]: Finished difference. Result has 328 places, 521 transitions, 8047 flow [2024-06-28 01:24:01,889 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=7813, PETRI_DIFFERENCE_MINUEND_PLACES=318, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=520, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=104, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=415, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=8047, PETRI_PLACES=328, PETRI_TRANSITIONS=521} [2024-06-28 01:24:01,889 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 286 predicate places. [2024-06-28 01:24:01,889 INFO L495 AbstractCegarLoop]: Abstraction has has 328 places, 521 transitions, 8047 flow [2024-06-28 01:24:01,889 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 10.25) internal successors, (123), 12 states have internal predecessors, (123), 0 states have call successors, (0), 0 states 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 01:24:01,889 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:24:01,889 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 01:24:01,889 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable95 [2024-06-28 01:24:01,889 INFO L420 AbstractCegarLoop]: === Iteration 97 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:24:01,890 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:24:01,890 INFO L85 PathProgramCache]: Analyzing trace with hash 1164781224, now seen corresponding path program 5 times [2024-06-28 01:24:01,890 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:24:01,890 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [221462484] [2024-06-28 01:24:01,890 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:24:01,890 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:24:01,899 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:24:02,950 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 01:24:02,950 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:24:02,950 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [221462484] [2024-06-28 01:24:02,951 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [221462484] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:24:02,951 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:24:02,951 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-28 01:24:02,951 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [586832841] [2024-06-28 01:24:02,951 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:24:02,951 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-28 01:24:02,951 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:24:02,951 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-28 01:24:02,951 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=101, Unknown=0, NotChecked=0, Total=132 [2024-06-28 01:24:03,063 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 38 [2024-06-28 01:24:03,063 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 328 places, 521 transitions, 8047 flow. Second operand has 12 states, 12 states have (on average 10.25) internal successors, (123), 12 states have internal predecessors, (123), 0 states have call successors, (0), 0 states 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 01:24:03,063 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:24:03,063 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 38 [2024-06-28 01:24:03,063 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:24:03,917 INFO L124 PetriNetUnfolderBase]: 2066/3673 cut-off events. [2024-06-28 01:24:03,917 INFO L125 PetriNetUnfolderBase]: For 162210/162210 co-relation queries the response was YES. [2024-06-28 01:24:03,946 INFO L83 FinitePrefix]: Finished finitePrefix Result has 26118 conditions, 3673 events. 2066/3673 cut-off events. For 162210/162210 co-relation queries the response was YES. Maximal size of possible extension queue 269. Compared 22872 event pairs, 237 based on Foata normal form. 2/3443 useless extension candidates. Maximal degree in co-relation 25963. Up to 2791 conditions per place. [2024-06-28 01:24:03,960 INFO L140 encePairwiseOnDemand]: 27/38 looper letters, 444 selfloop transitions, 107 changer transitions 0/559 dead transitions. [2024-06-28 01:24:03,960 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 337 places, 559 transitions, 9363 flow [2024-06-28 01:24:03,960 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 01:24:03,960 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 01:24:03,961 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 169 transitions. [2024-06-28 01:24:03,961 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44473684210526315 [2024-06-28 01:24:03,961 INFO L175 Difference]: Start difference. First operand has 328 places, 521 transitions, 8047 flow. Second operand 10 states and 169 transitions. [2024-06-28 01:24:03,961 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 337 places, 559 transitions, 9363 flow [2024-06-28 01:24:04,663 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 329 places, 559 transitions, 9128 flow, removed 11 selfloop flow, removed 8 redundant places. [2024-06-28 01:24:04,670 INFO L231 Difference]: Finished difference. Result has 330 places, 522 transitions, 8050 flow [2024-06-28 01:24:04,670 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=7812, PETRI_DIFFERENCE_MINUEND_PLACES=320, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=521, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=106, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=414, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=8050, PETRI_PLACES=330, PETRI_TRANSITIONS=522} [2024-06-28 01:24:04,670 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 288 predicate places. [2024-06-28 01:24:04,671 INFO L495 AbstractCegarLoop]: Abstraction has has 330 places, 522 transitions, 8050 flow [2024-06-28 01:24:04,671 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 10.25) internal successors, (123), 12 states have internal predecessors, (123), 0 states have call successors, (0), 0 states 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 01:24:04,671 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:24:04,671 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 01:24:04,671 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable96 [2024-06-28 01:24:04,671 INFO L420 AbstractCegarLoop]: === Iteration 98 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:24:04,671 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:24:04,671 INFO L85 PathProgramCache]: Analyzing trace with hash -1644889870, now seen corresponding path program 6 times [2024-06-28 01:24:04,672 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:24:04,672 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1293133167] [2024-06-28 01:24:04,672 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:24:04,672 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:24:04,680 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:24:05,656 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 01:24:05,656 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:24:05,657 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1293133167] [2024-06-28 01:24:05,657 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1293133167] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:24:05,657 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:24:05,657 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-28 01:24:05,657 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1437546931] [2024-06-28 01:24:05,657 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:24:05,657 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-28 01:24:05,657 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:24:05,658 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-28 01:24:05,658 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2024-06-28 01:24:05,760 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 38 [2024-06-28 01:24:05,760 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 330 places, 522 transitions, 8050 flow. Second operand has 12 states, 12 states have (on average 10.25) internal successors, (123), 12 states have internal predecessors, (123), 0 states have call successors, (0), 0 states 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 01:24:05,760 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:24:05,760 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 38 [2024-06-28 01:24:05,760 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:24:06,685 INFO L124 PetriNetUnfolderBase]: 2097/3747 cut-off events. [2024-06-28 01:24:06,685 INFO L125 PetriNetUnfolderBase]: For 166194/166194 co-relation queries the response was YES. [2024-06-28 01:24:06,714 INFO L83 FinitePrefix]: Finished finitePrefix Result has 26534 conditions, 3747 events. 2097/3747 cut-off events. For 166194/166194 co-relation queries the response was YES. Maximal size of possible extension queue 271. Compared 23552 event pairs, 390 based on Foata normal form. 2/3510 useless extension candidates. Maximal degree in co-relation 26378. Up to 3271 conditions per place. [2024-06-28 01:24:06,814 INFO L140 encePairwiseOnDemand]: 27/38 looper letters, 508 selfloop transitions, 45 changer transitions 0/561 dead transitions. [2024-06-28 01:24:06,815 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 339 places, 561 transitions, 9452 flow [2024-06-28 01:24:06,815 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 01:24:06,815 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 01:24:06,815 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 162 transitions. [2024-06-28 01:24:06,815 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4263157894736842 [2024-06-28 01:24:06,816 INFO L175 Difference]: Start difference. First operand has 330 places, 522 transitions, 8050 flow. Second operand 10 states and 162 transitions. [2024-06-28 01:24:06,816 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 339 places, 561 transitions, 9452 flow [2024-06-28 01:24:07,510 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 331 places, 561 transitions, 9218 flow, removed 8 selfloop flow, removed 8 redundant places. [2024-06-28 01:24:07,517 INFO L231 Difference]: Finished difference. Result has 333 places, 529 transitions, 8050 flow [2024-06-28 01:24:07,517 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=7822, PETRI_DIFFERENCE_MINUEND_PLACES=322, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=522, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=38, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=480, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=8050, PETRI_PLACES=333, PETRI_TRANSITIONS=529} [2024-06-28 01:24:07,517 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 291 predicate places. [2024-06-28 01:24:07,517 INFO L495 AbstractCegarLoop]: Abstraction has has 333 places, 529 transitions, 8050 flow [2024-06-28 01:24:07,517 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 10.25) internal successors, (123), 12 states have internal predecessors, (123), 0 states have call successors, (0), 0 states 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 01:24:07,517 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:24:07,517 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 01:24:07,518 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable97 [2024-06-28 01:24:07,518 INFO L420 AbstractCegarLoop]: === Iteration 99 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:24:07,518 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:24:07,518 INFO L85 PathProgramCache]: Analyzing trace with hash 797318812, now seen corresponding path program 13 times [2024-06-28 01:24:07,518 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:24:07,518 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1939605031] [2024-06-28 01:24:07,518 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:24:07,519 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:24:07,525 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:24:08,610 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 01:24:08,610 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:24:08,610 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1939605031] [2024-06-28 01:24:08,610 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1939605031] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:24:08,610 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:24:08,610 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-28 01:24:08,610 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [509712738] [2024-06-28 01:24:08,610 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:24:08,610 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-28 01:24:08,610 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:24:08,611 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-28 01:24:08,611 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=99, Unknown=0, NotChecked=0, Total=132 [2024-06-28 01:24:08,732 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 38 [2024-06-28 01:24:08,732 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 333 places, 529 transitions, 8050 flow. Second operand has 12 states, 12 states have (on average 10.25) internal successors, (123), 12 states have internal predecessors, (123), 0 states have call successors, (0), 0 states 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 01:24:08,732 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:24:08,732 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 38 [2024-06-28 01:24:08,732 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:24:09,649 INFO L124 PetriNetUnfolderBase]: 2103/3753 cut-off events. [2024-06-28 01:24:09,649 INFO L125 PetriNetUnfolderBase]: For 163514/163514 co-relation queries the response was YES. [2024-06-28 01:24:09,679 INFO L83 FinitePrefix]: Finished finitePrefix Result has 26297 conditions, 3753 events. 2103/3753 cut-off events. For 163514/163514 co-relation queries the response was YES. Maximal size of possible extension queue 272. Compared 23557 event pairs, 407 based on Foata normal form. 1/3513 useless extension candidates. Maximal degree in co-relation 26139. Up to 3343 conditions per place. [2024-06-28 01:24:09,691 INFO L140 encePairwiseOnDemand]: 26/38 looper letters, 510 selfloop transitions, 49 changer transitions 0/567 dead transitions. [2024-06-28 01:24:09,691 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 343 places, 567 transitions, 9516 flow [2024-06-28 01:24:09,692 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 01:24:09,692 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 01:24:09,692 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 168 transitions. [2024-06-28 01:24:09,692 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4019138755980861 [2024-06-28 01:24:09,692 INFO L175 Difference]: Start difference. First operand has 333 places, 529 transitions, 8050 flow. Second operand 11 states and 168 transitions. [2024-06-28 01:24:09,692 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 343 places, 567 transitions, 9516 flow [2024-06-28 01:24:10,317 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 336 places, 567 transitions, 9393 flow, removed 10 selfloop flow, removed 7 redundant places. [2024-06-28 01:24:10,324 INFO L231 Difference]: Finished difference. Result has 338 places, 542 transitions, 8232 flow [2024-06-28 01:24:10,324 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=7927, PETRI_DIFFERENCE_MINUEND_PLACES=326, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=529, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=36, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=490, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=8232, PETRI_PLACES=338, PETRI_TRANSITIONS=542} [2024-06-28 01:24:10,324 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 296 predicate places. [2024-06-28 01:24:10,324 INFO L495 AbstractCegarLoop]: Abstraction has has 338 places, 542 transitions, 8232 flow [2024-06-28 01:24:10,324 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 10.25) internal successors, (123), 12 states have internal predecessors, (123), 0 states have call successors, (0), 0 states 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 01:24:10,324 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:24:10,324 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 01:24:10,325 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable98 [2024-06-28 01:24:10,325 INFO L420 AbstractCegarLoop]: === Iteration 100 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:24:10,325 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:24:10,325 INFO L85 PathProgramCache]: Analyzing trace with hash 925438214, now seen corresponding path program 7 times [2024-06-28 01:24:10,325 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:24:10,325 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1909612770] [2024-06-28 01:24:10,325 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:24:10,325 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:24:10,333 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:24:11,268 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 01:24:11,268 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:24:11,268 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1909612770] [2024-06-28 01:24:11,268 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1909612770] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:24:11,268 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:24:11,268 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-28 01:24:11,268 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [385192263] [2024-06-28 01:24:11,268 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:24:11,268 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-28 01:24:11,268 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:24:11,269 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-28 01:24:11,269 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=102, Unknown=0, NotChecked=0, Total=132 [2024-06-28 01:24:11,344 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 38 [2024-06-28 01:24:11,344 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 338 places, 542 transitions, 8232 flow. Second operand has 12 states, 12 states have (on average 10.25) internal successors, (123), 12 states have internal predecessors, (123), 0 states have call successors, (0), 0 states 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 01:24:11,344 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:24:11,344 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 38 [2024-06-28 01:24:11,344 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:24:12,282 INFO L124 PetriNetUnfolderBase]: 2120/3795 cut-off events. [2024-06-28 01:24:12,282 INFO L125 PetriNetUnfolderBase]: For 170336/170336 co-relation queries the response was YES. [2024-06-28 01:24:12,314 INFO L83 FinitePrefix]: Finished finitePrefix Result has 26442 conditions, 3795 events. 2120/3795 cut-off events. For 170336/170336 co-relation queries the response was YES. Maximal size of possible extension queue 273. Compared 23972 event pairs, 409 based on Foata normal form. 2/3554 useless extension candidates. Maximal degree in co-relation 26282. Up to 3341 conditions per place. [2024-06-28 01:24:12,330 INFO L140 encePairwiseOnDemand]: 28/38 looper letters, 517 selfloop transitions, 44 changer transitions 0/569 dead transitions. [2024-06-28 01:24:12,330 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 347 places, 569 transitions, 9500 flow [2024-06-28 01:24:12,330 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 01:24:12,330 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 01:24:12,331 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 159 transitions. [2024-06-28 01:24:12,331 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.41842105263157897 [2024-06-28 01:24:12,331 INFO L175 Difference]: Start difference. First operand has 338 places, 542 transitions, 8232 flow. Second operand 10 states and 159 transitions. [2024-06-28 01:24:12,331 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 347 places, 569 transitions, 9500 flow [2024-06-28 01:24:12,952 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 341 places, 569 transitions, 9335 flow, removed 31 selfloop flow, removed 6 redundant places. [2024-06-28 01:24:12,959 INFO L231 Difference]: Finished difference. Result has 342 places, 543 transitions, 8184 flow [2024-06-28 01:24:12,960 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=8067, PETRI_DIFFERENCE_MINUEND_PLACES=332, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=542, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=43, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=498, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=8184, PETRI_PLACES=342, PETRI_TRANSITIONS=543} [2024-06-28 01:24:12,963 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 300 predicate places. [2024-06-28 01:24:12,963 INFO L495 AbstractCegarLoop]: Abstraction has has 342 places, 543 transitions, 8184 flow [2024-06-28 01:24:12,963 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 10.25) internal successors, (123), 12 states have internal predecessors, (123), 0 states have call successors, (0), 0 states 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 01:24:12,963 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:24:12,963 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 01:24:12,963 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable99 [2024-06-28 01:24:12,964 INFO L420 AbstractCegarLoop]: === Iteration 101 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:24:12,964 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:24:12,964 INFO L85 PathProgramCache]: Analyzing trace with hash 925448444, now seen corresponding path program 8 times [2024-06-28 01:24:12,964 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:24:12,964 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [44663138] [2024-06-28 01:24:12,964 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:24:12,965 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:24:12,973 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:24:13,894 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 01:24:13,894 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:24:13,894 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [44663138] [2024-06-28 01:24:13,894 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [44663138] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:24:13,894 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:24:13,894 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-28 01:24:13,895 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1887168827] [2024-06-28 01:24:13,895 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:24:13,895 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-28 01:24:13,895 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:24:13,895 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-28 01:24:13,895 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=102, Unknown=0, NotChecked=0, Total=132 [2024-06-28 01:24:14,011 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 38 [2024-06-28 01:24:14,011 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 342 places, 543 transitions, 8184 flow. Second operand has 12 states, 12 states have (on average 10.25) internal successors, (123), 12 states have internal predecessors, (123), 0 states have call successors, (0), 0 states 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 01:24:14,011 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:24:14,011 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 38 [2024-06-28 01:24:14,011 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:24:14,936 INFO L124 PetriNetUnfolderBase]: 2157/3880 cut-off events. [2024-06-28 01:24:14,936 INFO L125 PetriNetUnfolderBase]: For 184425/184425 co-relation queries the response was YES. [2024-06-28 01:24:14,969 INFO L83 FinitePrefix]: Finished finitePrefix Result has 27148 conditions, 3880 events. 2157/3880 cut-off events. For 184425/184425 co-relation queries the response was YES. Maximal size of possible extension queue 276. Compared 24711 event pairs, 407 based on Foata normal form. 2/3633 useless extension candidates. Maximal degree in co-relation 26988. Up to 3301 conditions per place. [2024-06-28 01:24:14,983 INFO L140 encePairwiseOnDemand]: 28/38 looper letters, 521 selfloop transitions, 46 changer transitions 0/575 dead transitions. [2024-06-28 01:24:14,983 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 351 places, 575 transitions, 9704 flow [2024-06-28 01:24:14,984 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 01:24:14,984 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 01:24:14,984 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 163 transitions. [2024-06-28 01:24:14,984 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.42894736842105263 [2024-06-28 01:24:14,984 INFO L175 Difference]: Start difference. First operand has 342 places, 543 transitions, 8184 flow. Second operand 10 states and 163 transitions. [2024-06-28 01:24:14,984 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 351 places, 575 transitions, 9704 flow [2024-06-28 01:24:15,746 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 345 places, 575 transitions, 9617 flow, removed 14 selfloop flow, removed 6 redundant places. [2024-06-28 01:24:15,754 INFO L231 Difference]: Finished difference. Result has 346 places, 545 transitions, 8243 flow [2024-06-28 01:24:15,754 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=8097, PETRI_DIFFERENCE_MINUEND_PLACES=336, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=543, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=45, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=498, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=8243, PETRI_PLACES=346, PETRI_TRANSITIONS=545} [2024-06-28 01:24:15,754 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 304 predicate places. [2024-06-28 01:24:15,754 INFO L495 AbstractCegarLoop]: Abstraction has has 346 places, 545 transitions, 8243 flow [2024-06-28 01:24:15,754 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 10.25) internal successors, (123), 12 states have internal predecessors, (123), 0 states have call successors, (0), 0 states 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 01:24:15,754 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:24:15,754 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 01:24:15,754 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable100 [2024-06-28 01:24:15,755 INFO L420 AbstractCegarLoop]: === Iteration 102 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:24:15,755 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:24:15,755 INFO L85 PathProgramCache]: Analyzing trace with hash 569417662, now seen corresponding path program 14 times [2024-06-28 01:24:15,755 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:24:15,755 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1343774220] [2024-06-28 01:24:15,755 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:24:15,755 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:24:15,761 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:24:16,745 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 01:24:16,745 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:24:16,745 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1343774220] [2024-06-28 01:24:16,746 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1343774220] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:24:16,746 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:24:16,746 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-28 01:24:16,746 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1597074018] [2024-06-28 01:24:16,746 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:24:16,746 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-28 01:24:16,746 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:24:16,747 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-28 01:24:16,747 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=99, Unknown=0, NotChecked=0, Total=132 [2024-06-28 01:24:16,884 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 38 [2024-06-28 01:24:16,884 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 346 places, 545 transitions, 8243 flow. Second operand has 12 states, 12 states have (on average 10.25) internal successors, (123), 12 states have internal predecessors, (123), 0 states have call successors, (0), 0 states 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 01:24:16,884 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:24:16,884 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 38 [2024-06-28 01:24:16,884 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:24:17,918 INFO L124 PetriNetUnfolderBase]: 2163/3887 cut-off events. [2024-06-28 01:24:17,918 INFO L125 PetriNetUnfolderBase]: For 183323/183323 co-relation queries the response was YES. [2024-06-28 01:24:17,949 INFO L83 FinitePrefix]: Finished finitePrefix Result has 27245 conditions, 3887 events. 2163/3887 cut-off events. For 183323/183323 co-relation queries the response was YES. Maximal size of possible extension queue 276. Compared 24752 event pairs, 424 based on Foata normal form. 1/3637 useless extension candidates. Maximal degree in co-relation 27084. Up to 3450 conditions per place. [2024-06-28 01:24:17,962 INFO L140 encePairwiseOnDemand]: 26/38 looper letters, 508 selfloop transitions, 58 changer transitions 0/574 dead transitions. [2024-06-28 01:24:17,962 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 356 places, 574 transitions, 9622 flow [2024-06-28 01:24:17,962 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 01:24:17,962 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 01:24:17,962 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 166 transitions. [2024-06-28 01:24:17,962 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.39712918660287083 [2024-06-28 01:24:17,963 INFO L175 Difference]: Start difference. First operand has 346 places, 545 transitions, 8243 flow. Second operand 11 states and 166 transitions. [2024-06-28 01:24:17,963 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 356 places, 574 transitions, 9622 flow [2024-06-28 01:24:18,804 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 350 places, 574 transitions, 9541 flow, removed 13 selfloop flow, removed 6 redundant places. [2024-06-28 01:24:18,818 INFO L231 Difference]: Finished difference. Result has 352 places, 552 transitions, 8419 flow [2024-06-28 01:24:18,818 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=8162, PETRI_DIFFERENCE_MINUEND_PLACES=340, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=545, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=51, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=491, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=8419, PETRI_PLACES=352, PETRI_TRANSITIONS=552} [2024-06-28 01:24:18,818 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 310 predicate places. [2024-06-28 01:24:18,819 INFO L495 AbstractCegarLoop]: Abstraction has has 352 places, 552 transitions, 8419 flow [2024-06-28 01:24:18,819 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 10.25) internal successors, (123), 12 states have internal predecessors, (123), 0 states have call successors, (0), 0 states 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 01:24:18,819 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:24:18,819 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 01:24:18,819 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable101 [2024-06-28 01:24:18,819 INFO L420 AbstractCegarLoop]: === Iteration 103 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:24:18,819 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:24:18,820 INFO L85 PathProgramCache]: Analyzing trace with hash 688781176, now seen corresponding path program 7 times [2024-06-28 01:24:18,820 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:24:18,820 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2026378243] [2024-06-28 01:24:18,820 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:24:18,820 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:24:18,826 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:24:19,746 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 01:24:19,747 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:24:19,747 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2026378243] [2024-06-28 01:24:19,747 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2026378243] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:24:19,747 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:24:19,747 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-28 01:24:19,747 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [807145152] [2024-06-28 01:24:19,747 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:24:19,748 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-28 01:24:19,748 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:24:19,748 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-28 01:24:19,748 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=100, Unknown=0, NotChecked=0, Total=132 [2024-06-28 01:24:19,845 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 38 [2024-06-28 01:24:19,846 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 352 places, 552 transitions, 8419 flow. Second operand has 12 states, 12 states have (on average 10.25) internal successors, (123), 12 states have internal predecessors, (123), 0 states have call successors, (0), 0 states 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 01:24:19,846 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:24:19,846 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 38 [2024-06-28 01:24:19,846 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:24:20,818 INFO L124 PetriNetUnfolderBase]: 2160/3883 cut-off events. [2024-06-28 01:24:20,818 INFO L125 PetriNetUnfolderBase]: For 180204/180204 co-relation queries the response was YES. [2024-06-28 01:24:20,849 INFO L83 FinitePrefix]: Finished finitePrefix Result has 27029 conditions, 3883 events. 2160/3883 cut-off events. For 180204/180204 co-relation queries the response was YES. Maximal size of possible extension queue 276. Compared 24726 event pairs, 427 based on Foata normal form. 2/3635 useless extension candidates. Maximal degree in co-relation 26865. Up to 3520 conditions per place. [2024-06-28 01:24:20,860 INFO L140 encePairwiseOnDemand]: 27/38 looper letters, 545 selfloop transitions, 21 changer transitions 0/574 dead transitions. [2024-06-28 01:24:20,860 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 362 places, 574 transitions, 9651 flow [2024-06-28 01:24:20,861 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 01:24:20,861 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 01:24:20,861 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 163 transitions. [2024-06-28 01:24:20,861 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.38995215311004783 [2024-06-28 01:24:20,861 INFO L175 Difference]: Start difference. First operand has 352 places, 552 transitions, 8419 flow. Second operand 11 states and 163 transitions. [2024-06-28 01:24:20,861 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 362 places, 574 transitions, 9651 flow [2024-06-28 01:24:21,631 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 355 places, 574 transitions, 9388 flow, removed 27 selfloop flow, removed 7 redundant places. [2024-06-28 01:24:21,637 INFO L231 Difference]: Finished difference. Result has 356 places, 552 transitions, 8202 flow [2024-06-28 01:24:21,637 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=8156, PETRI_DIFFERENCE_MINUEND_PLACES=345, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=552, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=21, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=531, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=8202, PETRI_PLACES=356, PETRI_TRANSITIONS=552} [2024-06-28 01:24:21,638 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 314 predicate places. [2024-06-28 01:24:21,638 INFO L495 AbstractCegarLoop]: Abstraction has has 356 places, 552 transitions, 8202 flow [2024-06-28 01:24:21,638 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 10.25) internal successors, (123), 12 states have internal predecessors, (123), 0 states have call successors, (0), 0 states 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 01:24:21,638 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:24:21,638 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 01:24:21,638 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable102 [2024-06-28 01:24:21,638 INFO L420 AbstractCegarLoop]: === Iteration 104 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:24:21,638 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:24:21,638 INFO L85 PathProgramCache]: Analyzing trace with hash 688785950, now seen corresponding path program 15 times [2024-06-28 01:24:21,639 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:24:21,639 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [434013864] [2024-06-28 01:24:21,639 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:24:21,639 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:24:21,644 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:24:22,451 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 01:24:22,451 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:24:22,451 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [434013864] [2024-06-28 01:24:22,451 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [434013864] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:24:22,451 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:24:22,451 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-28 01:24:22,451 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1401256625] [2024-06-28 01:24:22,451 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:24:22,451 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-28 01:24:22,451 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:24:22,452 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-28 01:24:22,452 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=96, Unknown=0, NotChecked=0, Total=132 [2024-06-28 01:24:22,546 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 38 [2024-06-28 01:24:22,547 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 356 places, 552 transitions, 8202 flow. Second operand has 12 states, 12 states have (on average 10.25) internal successors, (123), 12 states have internal predecessors, (123), 0 states have call successors, (0), 0 states 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 01:24:22,547 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:24:22,547 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 38 [2024-06-28 01:24:22,547 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:24:23,545 INFO L124 PetriNetUnfolderBase]: 2179/3910 cut-off events. [2024-06-28 01:24:23,545 INFO L125 PetriNetUnfolderBase]: For 188818/188818 co-relation queries the response was YES. [2024-06-28 01:24:23,577 INFO L83 FinitePrefix]: Finished finitePrefix Result has 27270 conditions, 3910 events. 2179/3910 cut-off events. For 188818/188818 co-relation queries the response was YES. Maximal size of possible extension queue 278. Compared 24873 event pairs, 394 based on Foata normal form. 3/3658 useless extension candidates. Maximal degree in co-relation 27105. Up to 3186 conditions per place. [2024-06-28 01:24:23,590 INFO L140 encePairwiseOnDemand]: 25/38 looper letters, 479 selfloop transitions, 98 changer transitions 0/585 dead transitions. [2024-06-28 01:24:23,590 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 366 places, 585 transitions, 9612 flow [2024-06-28 01:24:23,591 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 01:24:23,591 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 01:24:23,591 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 177 transitions. [2024-06-28 01:24:23,591 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.423444976076555 [2024-06-28 01:24:23,591 INFO L175 Difference]: Start difference. First operand has 356 places, 552 transitions, 8202 flow. Second operand 11 states and 177 transitions. [2024-06-28 01:24:23,591 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 366 places, 585 transitions, 9612 flow [2024-06-28 01:24:24,292 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 355 places, 585 transitions, 9471 flow, removed 15 selfloop flow, removed 11 redundant places. [2024-06-28 01:24:24,299 INFO L231 Difference]: Finished difference. Result has 356 places, 555 transitions, 8376 flow [2024-06-28 01:24:24,299 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=8061, PETRI_DIFFERENCE_MINUEND_PLACES=345, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=552, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=95, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=454, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=8376, PETRI_PLACES=356, PETRI_TRANSITIONS=555} [2024-06-28 01:24:24,300 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 314 predicate places. [2024-06-28 01:24:24,300 INFO L495 AbstractCegarLoop]: Abstraction has has 356 places, 555 transitions, 8376 flow [2024-06-28 01:24:24,300 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 10.25) internal successors, (123), 12 states have internal predecessors, (123), 0 states have call successors, (0), 0 states 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 01:24:24,300 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:24:24,300 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 01:24:24,300 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable103 [2024-06-28 01:24:24,300 INFO L420 AbstractCegarLoop]: === Iteration 105 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:24:24,300 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:24:24,300 INFO L85 PathProgramCache]: Analyzing trace with hash 569240032, now seen corresponding path program 16 times [2024-06-28 01:24:24,300 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:24:24,301 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [243464237] [2024-06-28 01:24:24,301 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:24:24,301 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:24:24,306 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:24:25,134 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 01:24:25,134 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:24:25,134 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [243464237] [2024-06-28 01:24:25,134 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [243464237] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:24:25,134 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:24:25,134 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-28 01:24:25,134 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1884162348] [2024-06-28 01:24:25,134 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:24:25,135 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-28 01:24:25,135 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:24:25,135 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-28 01:24:25,135 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=99, Unknown=0, NotChecked=0, Total=132 [2024-06-28 01:24:25,255 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 38 [2024-06-28 01:24:25,256 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 356 places, 555 transitions, 8376 flow. Second operand has 12 states, 12 states have (on average 10.25) internal successors, (123), 12 states have internal predecessors, (123), 0 states have call successors, (0), 0 states 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 01:24:25,256 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:24:25,256 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 38 [2024-06-28 01:24:25,256 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:24:26,362 INFO L124 PetriNetUnfolderBase]: 2202/3944 cut-off events. [2024-06-28 01:24:26,363 INFO L125 PetriNetUnfolderBase]: For 193411/193411 co-relation queries the response was YES. [2024-06-28 01:24:26,397 INFO L83 FinitePrefix]: Finished finitePrefix Result has 27980 conditions, 3944 events. 2202/3944 cut-off events. For 193411/193411 co-relation queries the response was YES. Maximal size of possible extension queue 278. Compared 25081 event pairs, 394 based on Foata normal form. 1/3686 useless extension candidates. Maximal degree in co-relation 27815. Up to 3157 conditions per place. [2024-06-28 01:24:26,411 INFO L140 encePairwiseOnDemand]: 25/38 looper letters, 477 selfloop transitions, 109 changer transitions 0/594 dead transitions. [2024-06-28 01:24:26,411 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 367 places, 594 transitions, 10100 flow [2024-06-28 01:24:26,412 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-28 01:24:26,412 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-28 01:24:26,412 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 194 transitions. [2024-06-28 01:24:26,412 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.42543859649122806 [2024-06-28 01:24:26,412 INFO L175 Difference]: Start difference. First operand has 356 places, 555 transitions, 8376 flow. Second operand 12 states and 194 transitions. [2024-06-28 01:24:26,412 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 367 places, 594 transitions, 10100 flow [2024-06-28 01:24:27,469 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 354 places, 594 transitions, 9708 flow, removed 49 selfloop flow, removed 13 redundant places. [2024-06-28 01:24:27,476 INFO L231 Difference]: Finished difference. Result has 356 places, 560 transitions, 8420 flow [2024-06-28 01:24:27,476 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=7984, PETRI_DIFFERENCE_MINUEND_PLACES=343, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=555, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=106, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=448, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=8420, PETRI_PLACES=356, PETRI_TRANSITIONS=560} [2024-06-28 01:24:27,476 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 314 predicate places. [2024-06-28 01:24:27,477 INFO L495 AbstractCegarLoop]: Abstraction has has 356 places, 560 transitions, 8420 flow [2024-06-28 01:24:27,477 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 10.25) internal successors, (123), 12 states have internal predecessors, (123), 0 states have call successors, (0), 0 states 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 01:24:27,477 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:24:27,477 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 01:24:27,477 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable104 [2024-06-28 01:24:27,477 INFO L420 AbstractCegarLoop]: === Iteration 106 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:24:27,477 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:24:27,477 INFO L85 PathProgramCache]: Analyzing trace with hash 764271726, now seen corresponding path program 9 times [2024-06-28 01:24:27,477 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:24:27,478 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1032422096] [2024-06-28 01:24:27,478 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:24:27,478 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:24:27,486 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:24:28,509 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 01:24:28,510 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:24:28,510 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1032422096] [2024-06-28 01:24:28,510 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1032422096] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:24:28,510 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:24:28,510 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-28 01:24:28,510 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1838993573] [2024-06-28 01:24:28,510 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:24:28,510 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-28 01:24:28,510 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:24:28,510 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-28 01:24:28,510 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=102, Unknown=0, NotChecked=0, Total=132 [2024-06-28 01:24:28,606 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 38 [2024-06-28 01:24:28,607 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 356 places, 560 transitions, 8420 flow. Second operand has 12 states, 12 states have (on average 10.25) internal successors, (123), 12 states have internal predecessors, (123), 0 states have call successors, (0), 0 states 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 01:24:28,607 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:24:28,607 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 38 [2024-06-28 01:24:28,607 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:24:29,716 INFO L124 PetriNetUnfolderBase]: 2233/4005 cut-off events. [2024-06-28 01:24:29,716 INFO L125 PetriNetUnfolderBase]: For 201856/201856 co-relation queries the response was YES. [2024-06-28 01:24:29,748 INFO L83 FinitePrefix]: Finished finitePrefix Result has 27871 conditions, 4005 events. 2233/4005 cut-off events. For 201856/201856 co-relation queries the response was YES. Maximal size of possible extension queue 284. Compared 25633 event pairs, 424 based on Foata normal form. 2/3744 useless extension candidates. Maximal degree in co-relation 27708. Up to 3577 conditions per place. [2024-06-28 01:24:29,761 INFO L140 encePairwiseOnDemand]: 27/38 looper letters, 550 selfloop transitions, 31 changer transitions 0/589 dead transitions. [2024-06-28 01:24:29,761 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 365 places, 589 transitions, 9787 flow [2024-06-28 01:24:29,761 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 01:24:29,761 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 01:24:29,761 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 157 transitions. [2024-06-28 01:24:29,761 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4131578947368421 [2024-06-28 01:24:29,762 INFO L175 Difference]: Start difference. First operand has 356 places, 560 transitions, 8420 flow. Second operand 10 states and 157 transitions. [2024-06-28 01:24:29,762 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 365 places, 589 transitions, 9787 flow [2024-06-28 01:24:30,744 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 357 places, 589 transitions, 9552 flow, removed 44 selfloop flow, removed 8 redundant places. [2024-06-28 01:24:30,750 INFO L231 Difference]: Finished difference. Result has 358 places, 564 transitions, 8347 flow [2024-06-28 01:24:30,750 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=8189, PETRI_DIFFERENCE_MINUEND_PLACES=348, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=560, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=27, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=532, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=8347, PETRI_PLACES=358, PETRI_TRANSITIONS=564} [2024-06-28 01:24:30,750 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 316 predicate places. [2024-06-28 01:24:30,751 INFO L495 AbstractCegarLoop]: Abstraction has has 358 places, 564 transitions, 8347 flow [2024-06-28 01:24:30,751 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 10.25) internal successors, (123), 12 states have internal predecessors, (123), 0 states have call successors, (0), 0 states 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 01:24:30,751 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:24:30,751 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 01:24:30,751 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable105 [2024-06-28 01:24:30,751 INFO L420 AbstractCegarLoop]: === Iteration 107 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:24:30,751 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:24:30,751 INFO L85 PathProgramCache]: Analyzing trace with hash 575920036, now seen corresponding path program 10 times [2024-06-28 01:24:30,751 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:24:30,751 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1285017791] [2024-06-28 01:24:30,751 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:24:30,751 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:24:30,760 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:24:31,746 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 01:24:31,746 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:24:31,746 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1285017791] [2024-06-28 01:24:31,746 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1285017791] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:24:31,746 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:24:31,746 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-28 01:24:31,746 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [397962376] [2024-06-28 01:24:31,746 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:24:31,747 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-28 01:24:31,747 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:24:31,747 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-28 01:24:31,747 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2024-06-28 01:24:31,861 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 38 [2024-06-28 01:24:31,862 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 358 places, 564 transitions, 8347 flow. Second operand has 12 states, 12 states have (on average 10.25) internal successors, (123), 12 states have internal predecessors, (123), 0 states have call successors, (0), 0 states 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 01:24:31,862 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:24:31,862 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 38 [2024-06-28 01:24:31,862 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:24:32,934 INFO L124 PetriNetUnfolderBase]: 2230/4004 cut-off events. [2024-06-28 01:24:32,934 INFO L125 PetriNetUnfolderBase]: For 192643/192643 co-relation queries the response was YES. [2024-06-28 01:24:32,966 INFO L83 FinitePrefix]: Finished finitePrefix Result has 27441 conditions, 4004 events. 2230/4004 cut-off events. For 192643/192643 co-relation queries the response was YES. Maximal size of possible extension queue 286. Compared 25646 event pairs, 413 based on Foata normal form. 2/3743 useless extension candidates. Maximal degree in co-relation 27276. Up to 3484 conditions per place. [2024-06-28 01:24:32,980 INFO L140 encePairwiseOnDemand]: 27/38 looper letters, 527 selfloop transitions, 54 changer transitions 0/589 dead transitions. [2024-06-28 01:24:32,980 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 367 places, 589 transitions, 9625 flow [2024-06-28 01:24:32,980 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 01:24:32,981 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 01:24:32,981 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 159 transitions. [2024-06-28 01:24:32,981 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.41842105263157897 [2024-06-28 01:24:32,981 INFO L175 Difference]: Start difference. First operand has 358 places, 564 transitions, 8347 flow. Second operand 10 states and 159 transitions. [2024-06-28 01:24:32,981 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 367 places, 589 transitions, 9625 flow [2024-06-28 01:24:33,959 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 360 places, 589 transitions, 9478 flow, removed 22 selfloop flow, removed 7 redundant places. [2024-06-28 01:24:33,966 INFO L231 Difference]: Finished difference. Result has 361 places, 564 transitions, 8314 flow [2024-06-28 01:24:33,967 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=8200, PETRI_DIFFERENCE_MINUEND_PLACES=351, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=564, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=54, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=510, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=8314, PETRI_PLACES=361, PETRI_TRANSITIONS=564} [2024-06-28 01:24:33,967 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 319 predicate places. [2024-06-28 01:24:33,967 INFO L495 AbstractCegarLoop]: Abstraction has has 361 places, 564 transitions, 8314 flow [2024-06-28 01:24:33,967 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 10.25) internal successors, (123), 12 states have internal predecessors, (123), 0 states have call successors, (0), 0 states 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 01:24:33,967 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:24:33,967 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 01:24:33,967 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable106 [2024-06-28 01:24:33,968 INFO L420 AbstractCegarLoop]: === Iteration 108 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:24:33,968 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:24:33,968 INFO L85 PathProgramCache]: Analyzing trace with hash 695215040, now seen corresponding path program 17 times [2024-06-28 01:24:33,968 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:24:33,968 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [177050329] [2024-06-28 01:24:33,969 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:24:33,969 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:24:33,974 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:24:34,790 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:24:34,791 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:24:34,791 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [177050329] [2024-06-28 01:24:34,791 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [177050329] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:24:34,791 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:24:34,791 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-28 01:24:34,791 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [434232914] [2024-06-28 01:24:34,791 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:24:34,791 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-28 01:24:34,791 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:24:34,792 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-28 01:24:34,792 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=96, Unknown=0, NotChecked=0, Total=132 [2024-06-28 01:24:34,890 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 38 [2024-06-28 01:24:34,897 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 361 places, 564 transitions, 8314 flow. Second operand has 12 states, 12 states have (on average 10.25) internal successors, (123), 12 states have internal predecessors, (123), 0 states have call successors, (0), 0 states 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 01:24:34,897 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:24:34,897 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 38 [2024-06-28 01:24:34,897 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:24:35,941 INFO L124 PetriNetUnfolderBase]: 2249/4029 cut-off events. [2024-06-28 01:24:35,941 INFO L125 PetriNetUnfolderBase]: For 201877/201877 co-relation queries the response was YES. [2024-06-28 01:24:35,974 INFO L83 FinitePrefix]: Finished finitePrefix Result has 27560 conditions, 4029 events. 2249/4029 cut-off events. For 201877/201877 co-relation queries the response was YES. Maximal size of possible extension queue 283. Compared 25758 event pairs, 396 based on Foata normal form. 3/3764 useless extension candidates. Maximal degree in co-relation 27395. Up to 3280 conditions per place. [2024-06-28 01:24:35,986 INFO L140 encePairwiseOnDemand]: 25/38 looper letters, 512 selfloop transitions, 76 changer transitions 0/596 dead transitions. [2024-06-28 01:24:35,986 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 371 places, 596 transitions, 9722 flow [2024-06-28 01:24:35,987 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 01:24:35,987 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 01:24:35,987 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 179 transitions. [2024-06-28 01:24:35,987 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.42822966507177035 [2024-06-28 01:24:35,987 INFO L175 Difference]: Start difference. First operand has 361 places, 564 transitions, 8314 flow. Second operand 11 states and 179 transitions. [2024-06-28 01:24:35,987 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 371 places, 596 transitions, 9722 flow [2024-06-28 01:24:36,961 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 361 places, 596 transitions, 9531 flow, removed 2 selfloop flow, removed 10 redundant places. [2024-06-28 01:24:36,968 INFO L231 Difference]: Finished difference. Result has 362 places, 567 transitions, 8379 flow [2024-06-28 01:24:36,968 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=8123, PETRI_DIFFERENCE_MINUEND_PLACES=351, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=564, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=73, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=488, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=8379, PETRI_PLACES=362, PETRI_TRANSITIONS=567} [2024-06-28 01:24:36,968 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 320 predicate places. [2024-06-28 01:24:36,969 INFO L495 AbstractCegarLoop]: Abstraction has has 362 places, 567 transitions, 8379 flow [2024-06-28 01:24:36,969 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 10.25) internal successors, (123), 12 states have internal predecessors, (123), 0 states have call successors, (0), 0 states 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 01:24:36,969 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:24:36,969 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 01:24:36,969 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable107 [2024-06-28 01:24:36,969 INFO L420 AbstractCegarLoop]: === Iteration 109 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:24:36,969 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:24:36,969 INFO L85 PathProgramCache]: Analyzing trace with hash 352261722, now seen corresponding path program 11 times [2024-06-28 01:24:36,969 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:24:36,970 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1340809827] [2024-06-28 01:24:36,970 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:24:36,970 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:24:36,977 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:24:37,880 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 01:24:37,881 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:24:37,881 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1340809827] [2024-06-28 01:24:37,881 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1340809827] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:24:37,881 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:24:37,881 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-28 01:24:37,881 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1100350800] [2024-06-28 01:24:37,881 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:24:37,881 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-28 01:24:37,881 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:24:37,881 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-28 01:24:37,882 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=102, Unknown=0, NotChecked=0, Total=132 [2024-06-28 01:24:38,011 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 38 [2024-06-28 01:24:38,012 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 362 places, 567 transitions, 8379 flow. Second operand has 12 states, 12 states have (on average 10.25) internal successors, (123), 12 states have internal predecessors, (123), 0 states have call successors, (0), 0 states 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 01:24:38,012 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:24:38,012 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 38 [2024-06-28 01:24:38,012 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:24:39,114 INFO L124 PetriNetUnfolderBase]: 2266/4066 cut-off events. [2024-06-28 01:24:39,115 INFO L125 PetriNetUnfolderBase]: For 199877/199877 co-relation queries the response was YES. [2024-06-28 01:24:39,150 INFO L83 FinitePrefix]: Finished finitePrefix Result has 27827 conditions, 4066 events. 2266/4066 cut-off events. For 199877/199877 co-relation queries the response was YES. Maximal size of possible extension queue 284. Compared 26054 event pairs, 444 based on Foata normal form. 2/3798 useless extension candidates. Maximal degree in co-relation 27661. Up to 3667 conditions per place. [2024-06-28 01:24:39,165 INFO L140 encePairwiseOnDemand]: 28/38 looper letters, 561 selfloop transitions, 21 changer transitions 0/590 dead transitions. [2024-06-28 01:24:39,166 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 371 places, 590 transitions, 9659 flow [2024-06-28 01:24:39,166 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 01:24:39,166 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 01:24:39,166 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 153 transitions. [2024-06-28 01:24:39,167 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4026315789473684 [2024-06-28 01:24:39,167 INFO L175 Difference]: Start difference. First operand has 362 places, 567 transitions, 8379 flow. Second operand 10 states and 153 transitions. [2024-06-28 01:24:39,167 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 371 places, 590 transitions, 9659 flow [2024-06-28 01:24:40,060 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 362 places, 590 transitions, 9446 flow, removed 33 selfloop flow, removed 9 redundant places. [2024-06-28 01:24:40,066 INFO L231 Difference]: Finished difference. Result has 363 places, 568 transitions, 8241 flow [2024-06-28 01:24:40,067 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=8166, PETRI_DIFFERENCE_MINUEND_PLACES=353, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=567, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=20, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=546, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=8241, PETRI_PLACES=363, PETRI_TRANSITIONS=568} [2024-06-28 01:24:40,067 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 321 predicate places. [2024-06-28 01:24:40,067 INFO L495 AbstractCegarLoop]: Abstraction has has 363 places, 568 transitions, 8241 flow [2024-06-28 01:24:40,067 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 10.25) internal successors, (123), 12 states have internal predecessors, (123), 0 states have call successors, (0), 0 states 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 01:24:40,067 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:24:40,067 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 01:24:40,067 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable108 [2024-06-28 01:24:40,067 INFO L420 AbstractCegarLoop]: === Iteration 110 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:24:40,067 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:24:40,068 INFO L85 PathProgramCache]: Analyzing trace with hash -1167065052, now seen corresponding path program 12 times [2024-06-28 01:24:40,068 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:24:40,068 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1469544792] [2024-06-28 01:24:40,068 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:24:40,068 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:24:40,076 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:24:40,990 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 01:24:40,990 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:24:40,990 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1469544792] [2024-06-28 01:24:40,990 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1469544792] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:24:40,990 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:24:40,990 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-28 01:24:40,990 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1392400820] [2024-06-28 01:24:40,990 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:24:40,990 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-28 01:24:40,991 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:24:40,991 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-28 01:24:40,991 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=102, Unknown=0, NotChecked=0, Total=132 [2024-06-28 01:24:41,091 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 38 [2024-06-28 01:24:41,091 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 363 places, 568 transitions, 8241 flow. Second operand has 12 states, 12 states have (on average 10.25) internal successors, (123), 12 states have internal predecessors, (123), 0 states have call successors, (0), 0 states 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 01:24:41,091 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:24:41,092 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 38 [2024-06-28 01:24:41,092 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:24:42,140 INFO L124 PetriNetUnfolderBase]: 2283/4105 cut-off events. [2024-06-28 01:24:42,140 INFO L125 PetriNetUnfolderBase]: For 201905/201905 co-relation queries the response was YES. [2024-06-28 01:24:42,176 INFO L83 FinitePrefix]: Finished finitePrefix Result has 27743 conditions, 4105 events. 2283/4105 cut-off events. For 201905/201905 co-relation queries the response was YES. Maximal size of possible extension queue 286. Compared 26448 event pairs, 441 based on Foata normal form. 2/3835 useless extension candidates. Maximal degree in co-relation 27576. Up to 3642 conditions per place. [2024-06-28 01:24:42,190 INFO L140 encePairwiseOnDemand]: 28/38 looper letters, 565 selfloop transitions, 21 changer transitions 0/594 dead transitions. [2024-06-28 01:24:42,191 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 372 places, 594 transitions, 9547 flow [2024-06-28 01:24:42,191 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 01:24:42,191 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 01:24:42,191 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 157 transitions. [2024-06-28 01:24:42,191 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4131578947368421 [2024-06-28 01:24:42,191 INFO L175 Difference]: Start difference. First operand has 363 places, 568 transitions, 8241 flow. Second operand 10 states and 157 transitions. [2024-06-28 01:24:42,191 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 372 places, 594 transitions, 9547 flow [2024-06-28 01:24:43,169 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 364 places, 594 transitions, 9484 flow, removed 12 selfloop flow, removed 8 redundant places. [2024-06-28 01:24:43,175 INFO L231 Difference]: Finished difference. Result has 365 places, 569 transitions, 8254 flow [2024-06-28 01:24:43,176 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=8178, PETRI_DIFFERENCE_MINUEND_PLACES=355, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=568, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=20, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=547, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=8254, PETRI_PLACES=365, PETRI_TRANSITIONS=569} [2024-06-28 01:24:43,176 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 323 predicate places. [2024-06-28 01:24:43,176 INFO L495 AbstractCegarLoop]: Abstraction has has 365 places, 569 transitions, 8254 flow [2024-06-28 01:24:43,176 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 10.25) internal successors, (123), 12 states have internal predecessors, (123), 0 states have call successors, (0), 0 states 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 01:24:43,176 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:24:43,176 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 01:24:43,177 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable109 [2024-06-28 01:24:43,177 INFO L420 AbstractCegarLoop]: === Iteration 111 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:24:43,177 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:24:43,177 INFO L85 PathProgramCache]: Analyzing trace with hash -1154206872, now seen corresponding path program 13 times [2024-06-28 01:24:43,177 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:24:43,177 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1335499141] [2024-06-28 01:24:43,177 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:24:43,178 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:24:43,185 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:24:44,062 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 01:24:44,062 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:24:44,062 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1335499141] [2024-06-28 01:24:44,062 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1335499141] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:24:44,062 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:24:44,062 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-28 01:24:44,062 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1173191675] [2024-06-28 01:24:44,062 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:24:44,063 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-28 01:24:44,063 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:24:44,063 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-28 01:24:44,063 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=102, Unknown=0, NotChecked=0, Total=132 [2024-06-28 01:24:44,162 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 38 [2024-06-28 01:24:44,162 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 365 places, 569 transitions, 8254 flow. Second operand has 12 states, 12 states have (on average 10.25) internal successors, (123), 12 states have internal predecessors, (123), 0 states have call successors, (0), 0 states 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 01:24:44,163 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:24:44,163 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 38 [2024-06-28 01:24:44,163 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:24:45,251 INFO L124 PetriNetUnfolderBase]: 2300/4143 cut-off events. [2024-06-28 01:24:45,251 INFO L125 PetriNetUnfolderBase]: For 205839/205839 co-relation queries the response was YES. [2024-06-28 01:24:45,287 INFO L83 FinitePrefix]: Finished finitePrefix Result has 27944 conditions, 4143 events. 2300/4143 cut-off events. For 205839/205839 co-relation queries the response was YES. Maximal size of possible extension queue 288. Compared 26789 event pairs, 431 based on Foata normal form. 2/3869 useless extension candidates. Maximal degree in co-relation 27776. Up to 3714 conditions per place. [2024-06-28 01:24:45,301 INFO L140 encePairwiseOnDemand]: 27/38 looper letters, 572 selfloop transitions, 16 changer transitions 0/596 dead transitions. [2024-06-28 01:24:45,301 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 374 places, 596 transitions, 9570 flow [2024-06-28 01:24:45,302 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 01:24:45,302 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 01:24:45,302 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 156 transitions. [2024-06-28 01:24:45,302 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4105263157894737 [2024-06-28 01:24:45,302 INFO L175 Difference]: Start difference. First operand has 365 places, 569 transitions, 8254 flow. Second operand 10 states and 156 transitions. [2024-06-28 01:24:45,302 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 374 places, 596 transitions, 9570 flow [2024-06-28 01:24:46,317 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 366 places, 596 transitions, 9504 flow, removed 13 selfloop flow, removed 8 redundant places. [2024-06-28 01:24:46,324 INFO L231 Difference]: Finished difference. Result has 367 places, 570 transitions, 8256 flow [2024-06-28 01:24:46,324 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=8188, PETRI_DIFFERENCE_MINUEND_PLACES=357, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=569, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=15, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=553, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=8256, PETRI_PLACES=367, PETRI_TRANSITIONS=570} [2024-06-28 01:24:46,324 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 325 predicate places. [2024-06-28 01:24:46,324 INFO L495 AbstractCegarLoop]: Abstraction has has 367 places, 570 transitions, 8256 flow [2024-06-28 01:24:46,325 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 10.25) internal successors, (123), 12 states have internal predecessors, (123), 0 states have call successors, (0), 0 states 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 01:24:46,325 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:24:46,325 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 01:24:46,325 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable110 [2024-06-28 01:24:46,325 INFO L420 AbstractCegarLoop]: === Iteration 112 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:24:46,325 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:24:46,325 INFO L85 PathProgramCache]: Analyzing trace with hash 755939856, now seen corresponding path program 14 times [2024-06-28 01:24:46,325 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:24:46,325 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2097029706] [2024-06-28 01:24:46,325 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:24:46,325 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:24:46,334 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:24:47,272 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 01:24:47,272 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:24:47,272 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2097029706] [2024-06-28 01:24:47,272 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2097029706] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:24:47,272 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:24:47,272 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-28 01:24:47,272 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1084011115] [2024-06-28 01:24:47,272 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:24:47,272 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-28 01:24:47,272 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:24:47,273 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-28 01:24:47,273 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=102, Unknown=0, NotChecked=0, Total=132 [2024-06-28 01:24:47,379 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 38 [2024-06-28 01:24:47,379 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 367 places, 570 transitions, 8256 flow. Second operand has 12 states, 12 states have (on average 10.25) internal successors, (123), 12 states have internal predecessors, (123), 0 states have call successors, (0), 0 states 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 01:24:47,379 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:24:47,380 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 38 [2024-06-28 01:24:47,380 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:24:48,514 INFO L124 PetriNetUnfolderBase]: 2317/4177 cut-off events. [2024-06-28 01:24:48,514 INFO L125 PetriNetUnfolderBase]: For 209684/209684 co-relation queries the response was YES. [2024-06-28 01:24:48,549 INFO L83 FinitePrefix]: Finished finitePrefix Result has 28101 conditions, 4177 events. 2317/4177 cut-off events. For 209684/209684 co-relation queries the response was YES. Maximal size of possible extension queue 292. Compared 27114 event pairs, 463 based on Foata normal form. 2/3903 useless extension candidates. Maximal degree in co-relation 27932. Up to 3750 conditions per place. [2024-06-28 01:24:48,563 INFO L140 encePairwiseOnDemand]: 28/38 looper letters, 561 selfloop transitions, 27 changer transitions 0/596 dead transitions. [2024-06-28 01:24:48,563 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 376 places, 596 transitions, 9576 flow [2024-06-28 01:24:48,563 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 01:24:48,563 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 01:24:48,563 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 155 transitions. [2024-06-28 01:24:48,564 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.40789473684210525 [2024-06-28 01:24:48,564 INFO L175 Difference]: Start difference. First operand has 367 places, 570 transitions, 8256 flow. Second operand 10 states and 155 transitions. [2024-06-28 01:24:48,564 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 376 places, 596 transitions, 9576 flow [2024-06-28 01:24:49,514 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 368 places, 596 transitions, 9518 flow, removed 14 selfloop flow, removed 8 redundant places. [2024-06-28 01:24:49,521 INFO L231 Difference]: Finished difference. Result has 369 places, 571 transitions, 8292 flow [2024-06-28 01:24:49,521 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=8198, PETRI_DIFFERENCE_MINUEND_PLACES=359, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=570, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=26, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=543, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=8292, PETRI_PLACES=369, PETRI_TRANSITIONS=571} [2024-06-28 01:24:49,521 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 327 predicate places. [2024-06-28 01:24:49,521 INFO L495 AbstractCegarLoop]: Abstraction has has 369 places, 571 transitions, 8292 flow [2024-06-28 01:24:49,522 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 10.25) internal successors, (123), 12 states have internal predecessors, (123), 0 states have call successors, (0), 0 states 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 01:24:49,522 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:24:49,522 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 01:24:49,522 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable111 [2024-06-28 01:24:49,522 INFO L420 AbstractCegarLoop]: === Iteration 113 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:24:49,522 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:24:49,522 INFO L85 PathProgramCache]: Analyzing trace with hash -1537376730, now seen corresponding path program 1 times [2024-06-28 01:24:49,522 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:24:49,522 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1691326284] [2024-06-28 01:24:49,522 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:24:49,522 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:24:49,538 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:24:50,375 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 01:24:50,376 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:24:50,376 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1691326284] [2024-06-28 01:24:50,376 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1691326284] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:24:50,376 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:24:50,376 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-28 01:24:50,376 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1922077920] [2024-06-28 01:24:50,376 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:24:50,376 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-28 01:24:50,376 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:24:50,376 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-28 01:24:50,377 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=98, Unknown=0, NotChecked=0, Total=132 [2024-06-28 01:24:50,476 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 38 [2024-06-28 01:24:50,476 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 369 places, 571 transitions, 8292 flow. Second operand has 12 states, 12 states have (on average 10.25) internal successors, (123), 12 states have internal predecessors, (123), 0 states have call successors, (0), 0 states 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 01:24:50,476 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:24:50,476 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 38 [2024-06-28 01:24:50,476 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:24:51,604 INFO L124 PetriNetUnfolderBase]: 2313/4170 cut-off events. [2024-06-28 01:24:51,604 INFO L125 PetriNetUnfolderBase]: For 200048/200048 co-relation queries the response was YES. [2024-06-28 01:24:51,633 INFO L83 FinitePrefix]: Finished finitePrefix Result has 27740 conditions, 4170 events. 2313/4170 cut-off events. For 200048/200048 co-relation queries the response was YES. Maximal size of possible extension queue 290. Compared 27065 event pairs, 468 based on Foata normal form. 2/3895 useless extension candidates. Maximal degree in co-relation 27570. Up to 3750 conditions per place. [2024-06-28 01:24:51,646 INFO L140 encePairwiseOnDemand]: 26/38 looper letters, 563 selfloop transitions, 24 changer transitions 0/595 dead transitions. [2024-06-28 01:24:51,646 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 379 places, 595 transitions, 9604 flow [2024-06-28 01:24:51,646 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 01:24:51,646 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 01:24:51,647 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 165 transitions. [2024-06-28 01:24:51,647 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.39473684210526316 [2024-06-28 01:24:51,647 INFO L175 Difference]: Start difference. First operand has 369 places, 571 transitions, 8292 flow. Second operand 11 states and 165 transitions. [2024-06-28 01:24:51,647 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 379 places, 595 transitions, 9604 flow [2024-06-28 01:24:52,610 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 371 places, 595 transitions, 9517 flow, removed 15 selfloop flow, removed 8 redundant places. [2024-06-28 01:24:52,617 INFO L231 Difference]: Finished difference. Result has 372 places, 573 transitions, 8314 flow [2024-06-28 01:24:52,617 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=8205, PETRI_DIFFERENCE_MINUEND_PLACES=361, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=571, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=22, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=547, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=8314, PETRI_PLACES=372, PETRI_TRANSITIONS=573} [2024-06-28 01:24:52,617 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 330 predicate places. [2024-06-28 01:24:52,617 INFO L495 AbstractCegarLoop]: Abstraction has has 372 places, 573 transitions, 8314 flow [2024-06-28 01:24:52,617 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 10.25) internal successors, (123), 12 states have internal predecessors, (123), 0 states have call successors, (0), 0 states 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 01:24:52,618 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:24:52,618 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 01:24:52,618 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable112 [2024-06-28 01:24:52,618 INFO L420 AbstractCegarLoop]: === Iteration 114 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:24:52,618 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:24:52,618 INFO L85 PathProgramCache]: Analyzing trace with hash -1686050318, now seen corresponding path program 15 times [2024-06-28 01:24:52,618 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:24:52,618 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1687596122] [2024-06-28 01:24:52,618 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:24:52,618 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:24:52,634 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:24:53,664 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 01:24:53,664 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:24:53,664 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1687596122] [2024-06-28 01:24:53,664 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1687596122] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:24:53,664 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:24:53,664 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-28 01:24:53,664 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1144524092] [2024-06-28 01:24:53,664 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:24:53,664 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-28 01:24:53,665 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:24:53,665 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-28 01:24:53,665 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=102, Unknown=0, NotChecked=0, Total=132 [2024-06-28 01:24:53,768 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 38 [2024-06-28 01:24:53,768 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 372 places, 573 transitions, 8314 flow. Second operand has 12 states, 12 states have (on average 10.25) internal successors, (123), 12 states have internal predecessors, (123), 0 states have call successors, (0), 0 states 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 01:24:53,768 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:24:53,769 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 38 [2024-06-28 01:24:53,769 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:24:54,869 INFO L124 PetriNetUnfolderBase]: 2314/4174 cut-off events. [2024-06-28 01:24:54,870 INFO L125 PetriNetUnfolderBase]: For 189655/189655 co-relation queries the response was YES. [2024-06-28 01:24:54,995 INFO L83 FinitePrefix]: Finished finitePrefix Result has 27401 conditions, 4174 events. 2314/4174 cut-off events. For 189655/189655 co-relation queries the response was YES. Maximal size of possible extension queue 292. Compared 27128 event pairs, 462 based on Foata normal form. 2/3900 useless extension candidates. Maximal degree in co-relation 27230. Up to 3642 conditions per place. [2024-06-28 01:24:55,006 INFO L140 encePairwiseOnDemand]: 27/38 looper letters, 562 selfloop transitions, 32 changer transitions 0/602 dead transitions. [2024-06-28 01:24:55,006 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 381 places, 602 transitions, 9664 flow [2024-06-28 01:24:55,006 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 01:24:55,006 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 01:24:55,007 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 160 transitions. [2024-06-28 01:24:55,007 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.42105263157894735 [2024-06-28 01:24:55,007 INFO L175 Difference]: Start difference. First operand has 372 places, 573 transitions, 8314 flow. Second operand 10 states and 160 transitions. [2024-06-28 01:24:55,007 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 381 places, 602 transitions, 9664 flow [2024-06-28 01:24:55,877 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 372 places, 602 transitions, 9575 flow, removed 22 selfloop flow, removed 9 redundant places. [2024-06-28 01:24:55,884 INFO L231 Difference]: Finished difference. Result has 373 places, 574 transitions, 8329 flow [2024-06-28 01:24:55,884 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=8225, PETRI_DIFFERENCE_MINUEND_PLACES=363, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=573, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=31, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=541, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=8329, PETRI_PLACES=373, PETRI_TRANSITIONS=574} [2024-06-28 01:24:55,884 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 331 predicate places. [2024-06-28 01:24:55,884 INFO L495 AbstractCegarLoop]: Abstraction has has 373 places, 574 transitions, 8329 flow [2024-06-28 01:24:55,884 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 10.25) internal successors, (123), 12 states have internal predecessors, (123), 0 states have call successors, (0), 0 states 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 01:24:55,884 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:24:55,885 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 01:24:55,885 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable113 [2024-06-28 01:24:55,885 INFO L420 AbstractCegarLoop]: === Iteration 115 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:24:55,885 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:24:55,885 INFO L85 PathProgramCache]: Analyzing trace with hash 755693592, now seen corresponding path program 18 times [2024-06-28 01:24:55,885 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:24:55,885 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [215403463] [2024-06-28 01:24:55,885 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:24:55,885 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:24:55,891 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:24:56,664 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 01:24:56,664 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:24:56,664 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [215403463] [2024-06-28 01:24:56,664 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [215403463] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:24:56,664 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:24:56,664 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-28 01:24:56,664 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [283764169] [2024-06-28 01:24:56,664 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:24:56,664 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-28 01:24:56,664 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:24:56,665 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-28 01:24:56,665 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=98, Unknown=0, NotChecked=0, Total=132 [2024-06-28 01:24:56,767 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 38 [2024-06-28 01:24:56,768 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 373 places, 574 transitions, 8329 flow. Second operand has 12 states, 12 states have (on average 10.25) internal successors, (123), 12 states have internal predecessors, (123), 0 states have call successors, (0), 0 states 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 01:24:56,768 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:24:56,768 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 38 [2024-06-28 01:24:56,768 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:24:57,803 INFO L124 PetriNetUnfolderBase]: 2312/4178 cut-off events. [2024-06-28 01:24:57,803 INFO L125 PetriNetUnfolderBase]: For 179797/179797 co-relation queries the response was YES. [2024-06-28 01:24:57,838 INFO L83 FinitePrefix]: Finished finitePrefix Result has 27272 conditions, 4178 events. 2312/4178 cut-off events. For 179797/179797 co-relation queries the response was YES. Maximal size of possible extension queue 291. Compared 27192 event pairs, 481 based on Foata normal form. 1/3900 useless extension candidates. Maximal degree in co-relation 27100. Up to 3792 conditions per place. [2024-06-28 01:24:57,852 INFO L140 encePairwiseOnDemand]: 26/38 looper letters, 560 selfloop transitions, 27 changer transitions 0/595 dead transitions. [2024-06-28 01:24:57,852 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 383 places, 595 transitions, 9648 flow [2024-06-28 01:24:57,852 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 01:24:57,852 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 01:24:57,853 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 160 transitions. [2024-06-28 01:24:57,853 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3827751196172249 [2024-06-28 01:24:57,853 INFO L175 Difference]: Start difference. First operand has 373 places, 574 transitions, 8329 flow. Second operand 11 states and 160 transitions. [2024-06-28 01:24:57,853 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 383 places, 595 transitions, 9648 flow [2024-06-28 01:24:58,808 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 375 places, 595 transitions, 9554 flow, removed 16 selfloop flow, removed 8 redundant places. [2024-06-28 01:24:58,814 INFO L231 Difference]: Finished difference. Result has 377 places, 577 transitions, 8370 flow [2024-06-28 01:24:58,815 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=8235, PETRI_DIFFERENCE_MINUEND_PLACES=365, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=574, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=24, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=548, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=8370, PETRI_PLACES=377, PETRI_TRANSITIONS=577} [2024-06-28 01:24:58,815 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 335 predicate places. [2024-06-28 01:24:58,815 INFO L495 AbstractCegarLoop]: Abstraction has has 377 places, 577 transitions, 8370 flow [2024-06-28 01:24:58,815 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 10.25) internal successors, (123), 12 states have internal predecessors, (123), 0 states have call successors, (0), 0 states 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 01:24:58,815 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:24:58,815 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 01:24:58,815 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable114 [2024-06-28 01:24:58,815 INFO L420 AbstractCegarLoop]: === Iteration 116 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:24:58,816 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:24:58,816 INFO L85 PathProgramCache]: Analyzing trace with hash 928832513, now seen corresponding path program 1 times [2024-06-28 01:24:58,816 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:24:58,816 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [193625389] [2024-06-28 01:24:58,816 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:24:58,816 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:24:58,821 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:24:59,778 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 01:24:59,778 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:24:59,778 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [193625389] [2024-06-28 01:24:59,779 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [193625389] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:24:59,779 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:24:59,779 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-28 01:24:59,779 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1565879433] [2024-06-28 01:24:59,779 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:24:59,779 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-28 01:24:59,779 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:24:59,779 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-28 01:24:59,779 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=124, Unknown=0, NotChecked=0, Total=156 [2024-06-28 01:24:59,944 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 38 [2024-06-28 01:24:59,944 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 377 places, 577 transitions, 8370 flow. Second operand has 13 states, 13 states have (on average 10.23076923076923) internal successors, (133), 13 states have internal predecessors, (133), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:24:59,944 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:24:59,944 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 38 [2024-06-28 01:24:59,944 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:25:01,195 INFO L124 PetriNetUnfolderBase]: 2453/4481 cut-off events. [2024-06-28 01:25:01,195 INFO L125 PetriNetUnfolderBase]: For 279997/279997 co-relation queries the response was YES. [2024-06-28 01:25:01,235 INFO L83 FinitePrefix]: Finished finitePrefix Result has 30016 conditions, 4481 events. 2453/4481 cut-off events. For 279997/279997 co-relation queries the response was YES. Maximal size of possible extension queue 296. Compared 29845 event pairs, 390 based on Foata normal form. 2/4197 useless extension candidates. Maximal degree in co-relation 29842. Up to 3543 conditions per place. [2024-06-28 01:25:01,250 INFO L140 encePairwiseOnDemand]: 25/38 looper letters, 586 selfloop transitions, 46 changer transitions 0/640 dead transitions. [2024-06-28 01:25:01,250 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 389 places, 640 transitions, 10228 flow [2024-06-28 01:25:01,250 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-06-28 01:25:01,251 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2024-06-28 01:25:01,251 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 224 transitions. [2024-06-28 01:25:01,251 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4534412955465587 [2024-06-28 01:25:01,251 INFO L175 Difference]: Start difference. First operand has 377 places, 577 transitions, 8370 flow. Second operand 13 states and 224 transitions. [2024-06-28 01:25:01,251 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 389 places, 640 transitions, 10228 flow [2024-06-28 01:25:02,462 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 379 places, 640 transitions, 10084 flow, removed 25 selfloop flow, removed 10 redundant places. [2024-06-28 01:25:02,469 INFO L231 Difference]: Finished difference. Result has 380 places, 579 transitions, 8388 flow [2024-06-28 01:25:02,469 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=8226, PETRI_DIFFERENCE_MINUEND_PLACES=367, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=577, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=45, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=532, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=8388, PETRI_PLACES=380, PETRI_TRANSITIONS=579} [2024-06-28 01:25:02,470 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 338 predicate places. [2024-06-28 01:25:02,470 INFO L495 AbstractCegarLoop]: Abstraction has has 380 places, 579 transitions, 8388 flow [2024-06-28 01:25:02,470 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 10.23076923076923) internal successors, (133), 13 states have internal predecessors, (133), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:25:02,470 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:25:02,470 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:25:02,470 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable115 [2024-06-28 01:25:02,470 INFO L420 AbstractCegarLoop]: === Iteration 117 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:25:02,470 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:25:02,470 INFO L85 PathProgramCache]: Analyzing trace with hash 2046991244, now seen corresponding path program 1 times [2024-06-28 01:25:02,470 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:25:02,470 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1689642004] [2024-06-28 01:25:02,471 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:25:02,471 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:25:02,478 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:25:03,451 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 01:25:03,452 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:25:03,452 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1689642004] [2024-06-28 01:25:03,452 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1689642004] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:25:03,452 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:25:03,452 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-28 01:25:03,452 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [626510029] [2024-06-28 01:25:03,452 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:25:03,452 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-28 01:25:03,452 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:25:03,452 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-28 01:25:03,453 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=124, Unknown=0, NotChecked=0, Total=156 [2024-06-28 01:25:03,582 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 38 [2024-06-28 01:25:03,582 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 380 places, 579 transitions, 8388 flow. Second operand has 13 states, 13 states have (on average 10.23076923076923) internal successors, (133), 13 states have internal predecessors, (133), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:25:03,582 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:25:03,582 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 38 [2024-06-28 01:25:03,582 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:25:04,859 INFO L124 PetriNetUnfolderBase]: 2466/4523 cut-off events. [2024-06-28 01:25:04,859 INFO L125 PetriNetUnfolderBase]: For 286468/286468 co-relation queries the response was YES. [2024-06-28 01:25:04,898 INFO L83 FinitePrefix]: Finished finitePrefix Result has 30434 conditions, 4523 events. 2466/4523 cut-off events. For 286468/286468 co-relation queries the response was YES. Maximal size of possible extension queue 297. Compared 30317 event pairs, 465 based on Foata normal form. 2/4225 useless extension candidates. Maximal degree in co-relation 30259. Up to 3957 conditions per place. [2024-06-28 01:25:04,913 INFO L140 encePairwiseOnDemand]: 25/38 looper letters, 572 selfloop transitions, 49 changer transitions 0/629 dead transitions. [2024-06-28 01:25:04,913 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 394 places, 629 transitions, 9940 flow [2024-06-28 01:25:04,914 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2024-06-28 01:25:04,914 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2024-06-28 01:25:04,914 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 231 transitions. [2024-06-28 01:25:04,914 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4052631578947368 [2024-06-28 01:25:04,914 INFO L175 Difference]: Start difference. First operand has 380 places, 579 transitions, 8388 flow. Second operand 15 states and 231 transitions. [2024-06-28 01:25:04,914 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 394 places, 629 transitions, 9940 flow [2024-06-28 01:25:06,466 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 385 places, 629 transitions, 9844 flow, removed 16 selfloop flow, removed 9 redundant places. [2024-06-28 01:25:06,473 INFO L231 Difference]: Finished difference. Result has 387 places, 582 transitions, 8500 flow [2024-06-28 01:25:06,473 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=8292, PETRI_DIFFERENCE_MINUEND_PLACES=371, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=579, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=46, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=530, PETRI_DIFFERENCE_SUBTRAHEND_STATES=15, PETRI_FLOW=8500, PETRI_PLACES=387, PETRI_TRANSITIONS=582} [2024-06-28 01:25:06,474 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 345 predicate places. [2024-06-28 01:25:06,474 INFO L495 AbstractCegarLoop]: Abstraction has has 387 places, 582 transitions, 8500 flow [2024-06-28 01:25:06,474 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 10.23076923076923) internal successors, (133), 13 states have internal predecessors, (133), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:25:06,474 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:25:06,474 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 01:25:06,474 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable116 [2024-06-28 01:25:06,474 INFO L420 AbstractCegarLoop]: === Iteration 118 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:25:06,474 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:25:06,474 INFO L85 PathProgramCache]: Analyzing trace with hash 930710183, now seen corresponding path program 2 times [2024-06-28 01:25:06,474 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:25:06,474 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [492386581] [2024-06-28 01:25:06,475 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:25:06,475 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:25:06,481 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:25:07,514 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 01:25:07,514 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:25:07,514 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [492386581] [2024-06-28 01:25:07,514 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [492386581] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:25:07,514 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:25:07,514 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-28 01:25:07,514 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [178258438] [2024-06-28 01:25:07,514 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:25:07,515 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-28 01:25:07,515 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:25:07,515 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-28 01:25:07,515 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=124, Unknown=0, NotChecked=0, Total=156 [2024-06-28 01:25:07,647 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 38 [2024-06-28 01:25:07,647 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 387 places, 582 transitions, 8500 flow. Second operand has 13 states, 13 states have (on average 10.23076923076923) internal successors, (133), 13 states have internal predecessors, (133), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:25:07,647 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:25:07,647 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 38 [2024-06-28 01:25:07,647 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:25:09,046 INFO L124 PetriNetUnfolderBase]: 2467/4551 cut-off events. [2024-06-28 01:25:09,046 INFO L125 PetriNetUnfolderBase]: For 291491/291491 co-relation queries the response was YES. [2024-06-28 01:25:09,087 INFO L83 FinitePrefix]: Finished finitePrefix Result has 29174 conditions, 4551 events. 2467/4551 cut-off events. For 291491/291491 co-relation queries the response was YES. Maximal size of possible extension queue 298. Compared 30548 event pairs, 456 based on Foata normal form. 14/4264 useless extension candidates. Maximal degree in co-relation 28996. Up to 3761 conditions per place. [2024-06-28 01:25:09,103 INFO L140 encePairwiseOnDemand]: 25/38 looper letters, 581 selfloop transitions, 47 changer transitions 0/636 dead transitions. [2024-06-28 01:25:09,103 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 400 places, 636 transitions, 10044 flow [2024-06-28 01:25:09,103 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2024-06-28 01:25:09,103 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2024-06-28 01:25:09,103 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 226 transitions. [2024-06-28 01:25:09,104 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.424812030075188 [2024-06-28 01:25:09,104 INFO L175 Difference]: Start difference. First operand has 387 places, 582 transitions, 8500 flow. Second operand 14 states and 226 transitions. [2024-06-28 01:25:09,104 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 400 places, 636 transitions, 10044 flow [2024-06-28 01:25:10,038 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 388 places, 636 transitions, 9873 flow, removed 39 selfloop flow, removed 12 redundant places. [2024-06-28 01:25:10,044 INFO L231 Difference]: Finished difference. Result has 389 places, 583 transitions, 8457 flow [2024-06-28 01:25:10,045 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=8329, PETRI_DIFFERENCE_MINUEND_PLACES=375, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=582, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=46, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=535, PETRI_DIFFERENCE_SUBTRAHEND_STATES=14, PETRI_FLOW=8457, PETRI_PLACES=389, PETRI_TRANSITIONS=583} [2024-06-28 01:25:10,045 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 347 predicate places. [2024-06-28 01:25:10,045 INFO L495 AbstractCegarLoop]: Abstraction has has 389 places, 583 transitions, 8457 flow [2024-06-28 01:25:10,045 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 10.23076923076923) internal successors, (133), 13 states have internal predecessors, (133), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:25:10,045 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:25:10,045 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 01:25:10,045 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable117 [2024-06-28 01:25:10,045 INFO L420 AbstractCegarLoop]: === Iteration 119 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:25:10,046 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:25:10,046 INFO L85 PathProgramCache]: Analyzing trace with hash 930706463, now seen corresponding path program 3 times [2024-06-28 01:25:10,046 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:25:10,046 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [515251295] [2024-06-28 01:25:10,046 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:25:10,046 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:25:10,052 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:25:11,054 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 01:25:11,055 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:25:11,055 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [515251295] [2024-06-28 01:25:11,055 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [515251295] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:25:11,055 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:25:11,055 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-28 01:25:11,055 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2035303525] [2024-06-28 01:25:11,055 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:25:11,055 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-28 01:25:11,055 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:25:11,055 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-28 01:25:11,056 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=125, Unknown=0, NotChecked=0, Total=156 [2024-06-28 01:25:11,223 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 38 [2024-06-28 01:25:11,224 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 389 places, 583 transitions, 8457 flow. Second operand has 13 states, 13 states have (on average 10.23076923076923) internal successors, (133), 13 states have internal predecessors, (133), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:25:11,224 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:25:11,224 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 38 [2024-06-28 01:25:11,224 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:25:12,624 INFO L124 PetriNetUnfolderBase]: 2464/4544 cut-off events. [2024-06-28 01:25:12,625 INFO L125 PetriNetUnfolderBase]: For 201533/201533 co-relation queries the response was YES. [2024-06-28 01:25:12,664 INFO L83 FinitePrefix]: Finished finitePrefix Result has 28732 conditions, 4544 events. 2464/4544 cut-off events. For 201533/201533 co-relation queries the response was YES. Maximal size of possible extension queue 298. Compared 30486 event pairs, 442 based on Foata normal form. 2/4247 useless extension candidates. Maximal degree in co-relation 28553. Up to 3669 conditions per place. [2024-06-28 01:25:12,679 INFO L140 encePairwiseOnDemand]: 25/38 looper letters, 583 selfloop transitions, 47 changer transitions 0/638 dead transitions. [2024-06-28 01:25:12,680 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 401 places, 638 transitions, 9991 flow [2024-06-28 01:25:12,680 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-06-28 01:25:12,680 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2024-06-28 01:25:12,680 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 219 transitions. [2024-06-28 01:25:12,680 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4433198380566802 [2024-06-28 01:25:12,680 INFO L175 Difference]: Start difference. First operand has 389 places, 583 transitions, 8457 flow. Second operand 13 states and 219 transitions. [2024-06-28 01:25:12,681 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 401 places, 638 transitions, 9991 flow [2024-06-28 01:25:13,733 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 389 places, 638 transitions, 9869 flow, removed 16 selfloop flow, removed 12 redundant places. [2024-06-28 01:25:13,739 INFO L231 Difference]: Finished difference. Result has 390 places, 583 transitions, 8434 flow [2024-06-28 01:25:13,740 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=8335, PETRI_DIFFERENCE_MINUEND_PLACES=377, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=583, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=47, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=536, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=8434, PETRI_PLACES=390, PETRI_TRANSITIONS=583} [2024-06-28 01:25:13,740 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 348 predicate places. [2024-06-28 01:25:13,740 INFO L495 AbstractCegarLoop]: Abstraction has has 390 places, 583 transitions, 8434 flow [2024-06-28 01:25:13,740 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 10.23076923076923) internal successors, (133), 13 states have internal predecessors, (133), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:25:13,740 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:25:13,740 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 01:25:13,740 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable118 [2024-06-28 01:25:13,740 INFO L420 AbstractCegarLoop]: === Iteration 120 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:25:13,741 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:25:13,741 INFO L85 PathProgramCache]: Analyzing trace with hash 1418463884, now seen corresponding path program 1 times [2024-06-28 01:25:13,741 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:25:13,741 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2080329514] [2024-06-28 01:25:13,741 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:25:13,741 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:25:13,749 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:25:14,704 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 01:25:14,704 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:25:14,705 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2080329514] [2024-06-28 01:25:14,705 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2080329514] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:25:14,705 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:25:14,705 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-28 01:25:14,705 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1712067158] [2024-06-28 01:25:14,705 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:25:14,705 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-28 01:25:14,705 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:25:14,705 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-28 01:25:14,705 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=115, Unknown=0, NotChecked=0, Total=156 [2024-06-28 01:25:14,787 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 38 [2024-06-28 01:25:14,787 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 390 places, 583 transitions, 8434 flow. Second operand has 13 states, 13 states have (on average 10.23076923076923) internal successors, (133), 13 states have internal predecessors, (133), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:25:14,787 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:25:14,787 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 38 [2024-06-28 01:25:14,787 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:25:15,961 INFO L124 PetriNetUnfolderBase]: 2481/4557 cut-off events. [2024-06-28 01:25:15,962 INFO L125 PetriNetUnfolderBase]: For 202821/202821 co-relation queries the response was YES. [2024-06-28 01:25:16,000 INFO L83 FinitePrefix]: Finished finitePrefix Result has 28676 conditions, 4557 events. 2481/4557 cut-off events. For 202821/202821 co-relation queries the response was YES. Maximal size of possible extension queue 295. Compared 30559 event pairs, 400 based on Foata normal form. 2/4255 useless extension candidates. Maximal degree in co-relation 28496. Up to 3094 conditions per place. [2024-06-28 01:25:16,015 INFO L140 encePairwiseOnDemand]: 27/38 looper letters, 327 selfloop transitions, 292 changer transitions 0/627 dead transitions. [2024-06-28 01:25:16,015 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 400 places, 627 transitions, 9901 flow [2024-06-28 01:25:16,015 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 01:25:16,015 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 01:25:16,015 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 187 transitions. [2024-06-28 01:25:16,015 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4473684210526316 [2024-06-28 01:25:16,016 INFO L175 Difference]: Start difference. First operand has 390 places, 583 transitions, 8434 flow. Second operand 11 states and 187 transitions. [2024-06-28 01:25:16,016 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 400 places, 627 transitions, 9901 flow [2024-06-28 01:25:16,938 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 388 places, 627 transitions, 9799 flow, removed 1 selfloop flow, removed 12 redundant places. [2024-06-28 01:25:16,945 INFO L231 Difference]: Finished difference. Result has 389 places, 584 transitions, 8935 flow [2024-06-28 01:25:16,945 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=8332, PETRI_DIFFERENCE_MINUEND_PLACES=378, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=583, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=291, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=291, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=8935, PETRI_PLACES=389, PETRI_TRANSITIONS=584} [2024-06-28 01:25:16,945 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 347 predicate places. [2024-06-28 01:25:16,946 INFO L495 AbstractCegarLoop]: Abstraction has has 389 places, 584 transitions, 8935 flow [2024-06-28 01:25:16,946 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 10.23076923076923) internal successors, (133), 13 states have internal predecessors, (133), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:25:16,946 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:25:16,946 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 01:25:16,946 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable119 [2024-06-28 01:25:16,946 INFO L420 AbstractCegarLoop]: === Iteration 121 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:25:16,946 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:25:16,946 INFO L85 PathProgramCache]: Analyzing trace with hash 301967652, now seen corresponding path program 2 times [2024-06-28 01:25:16,946 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:25:16,946 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1220440129] [2024-06-28 01:25:16,946 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:25:16,946 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:25:16,955 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:25:17,881 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 01:25:17,881 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:25:17,881 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1220440129] [2024-06-28 01:25:17,881 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1220440129] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:25:17,881 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:25:17,881 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-28 01:25:17,882 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [666379237] [2024-06-28 01:25:17,882 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:25:17,882 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-28 01:25:17,882 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:25:17,882 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-28 01:25:17,882 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=115, Unknown=0, NotChecked=0, Total=156 [2024-06-28 01:25:18,003 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 38 [2024-06-28 01:25:18,004 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 389 places, 584 transitions, 8935 flow. Second operand has 13 states, 13 states have (on average 10.23076923076923) internal successors, (133), 13 states have internal predecessors, (133), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:25:18,004 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:25:18,004 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 38 [2024-06-28 01:25:18,004 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:25:19,323 INFO L124 PetriNetUnfolderBase]: 2505/4593 cut-off events. [2024-06-28 01:25:19,324 INFO L125 PetriNetUnfolderBase]: For 211752/211752 co-relation queries the response was YES. [2024-06-28 01:25:19,360 INFO L83 FinitePrefix]: Finished finitePrefix Result has 29857 conditions, 4593 events. 2505/4593 cut-off events. For 211752/211752 co-relation queries the response was YES. Maximal size of possible extension queue 297. Compared 30810 event pairs, 362 based on Foata normal form. 2/4286 useless extension candidates. Maximal degree in co-relation 29676. Up to 2589 conditions per place. [2024-06-28 01:25:19,372 INFO L140 encePairwiseOnDemand]: 25/38 looper letters, 383 selfloop transitions, 241 changer transitions 0/632 dead transitions. [2024-06-28 01:25:19,373 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 401 places, 632 transitions, 10506 flow [2024-06-28 01:25:19,373 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-06-28 01:25:19,373 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2024-06-28 01:25:19,373 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 220 transitions. [2024-06-28 01:25:19,373 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44534412955465585 [2024-06-28 01:25:19,373 INFO L175 Difference]: Start difference. First operand has 389 places, 584 transitions, 8935 flow. Second operand 13 states and 220 transitions. [2024-06-28 01:25:19,373 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 401 places, 632 transitions, 10506 flow [2024-06-28 01:25:20,234 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 390 places, 632 transitions, 9860 flow, removed 8 selfloop flow, removed 11 redundant places. [2024-06-28 01:25:20,241 INFO L231 Difference]: Finished difference. Result has 391 places, 588 transitions, 8895 flow [2024-06-28 01:25:20,241 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=8289, PETRI_DIFFERENCE_MINUEND_PLACES=378, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=584, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=237, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=345, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=8895, PETRI_PLACES=391, PETRI_TRANSITIONS=588} [2024-06-28 01:25:20,241 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 349 predicate places. [2024-06-28 01:25:20,241 INFO L495 AbstractCegarLoop]: Abstraction has has 391 places, 588 transitions, 8895 flow [2024-06-28 01:25:20,241 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 10.23076923076923) internal successors, (133), 13 states have internal predecessors, (133), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:25:20,242 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:25:20,242 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 01:25:20,242 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable120 [2024-06-28 01:25:20,242 INFO L420 AbstractCegarLoop]: === Iteration 122 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:25:20,242 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:25:20,242 INFO L85 PathProgramCache]: Analyzing trace with hash 301967497, now seen corresponding path program 4 times [2024-06-28 01:25:20,242 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:25:20,242 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [390319786] [2024-06-28 01:25:20,242 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:25:20,242 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:25:20,248 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:25:21,176 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:25:21,177 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:25:21,177 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [390319786] [2024-06-28 01:25:21,177 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [390319786] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:25:21,177 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:25:21,177 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-28 01:25:21,177 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1672875747] [2024-06-28 01:25:21,177 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:25:21,177 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-28 01:25:21,177 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:25:21,177 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-28 01:25:21,177 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=115, Unknown=0, NotChecked=0, Total=156 [2024-06-28 01:25:21,304 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 38 [2024-06-28 01:25:21,304 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 391 places, 588 transitions, 8895 flow. Second operand has 13 states, 13 states have (on average 10.23076923076923) internal successors, (133), 13 states have internal predecessors, (133), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:25:21,304 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:25:21,304 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 38 [2024-06-28 01:25:21,305 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:25:22,744 INFO L124 PetriNetUnfolderBase]: 2826/5203 cut-off events. [2024-06-28 01:25:22,745 INFO L125 PetriNetUnfolderBase]: For 303270/303270 co-relation queries the response was YES. [2024-06-28 01:25:22,786 INFO L83 FinitePrefix]: Finished finitePrefix Result has 33078 conditions, 5203 events. 2826/5203 cut-off events. For 303270/303270 co-relation queries the response was YES. Maximal size of possible extension queue 333. Compared 35748 event pairs, 619 based on Foata normal form. 14/4880 useless extension candidates. Maximal degree in co-relation 32898. Up to 3456 conditions per place. [2024-06-28 01:25:22,802 INFO L140 encePairwiseOnDemand]: 24/38 looper letters, 518 selfloop transitions, 187 changer transitions 0/713 dead transitions. [2024-06-28 01:25:22,803 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 403 places, 713 transitions, 11505 flow [2024-06-28 01:25:22,803 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-06-28 01:25:22,803 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2024-06-28 01:25:22,803 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 217 transitions. [2024-06-28 01:25:22,803 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4392712550607287 [2024-06-28 01:25:22,804 INFO L175 Difference]: Start difference. First operand has 391 places, 588 transitions, 8895 flow. Second operand 13 states and 217 transitions. [2024-06-28 01:25:22,804 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 403 places, 713 transitions, 11505 flow [2024-06-28 01:25:23,814 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 393 places, 713 transitions, 10843 flow, removed 42 selfloop flow, removed 10 redundant places. [2024-06-28 01:25:23,822 INFO L231 Difference]: Finished difference. Result has 400 places, 640 transitions, 9654 flow [2024-06-28 01:25:23,822 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=8336, PETRI_DIFFERENCE_MINUEND_PLACES=381, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=588, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=135, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=401, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=9654, PETRI_PLACES=400, PETRI_TRANSITIONS=640} [2024-06-28 01:25:23,822 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 358 predicate places. [2024-06-28 01:25:23,823 INFO L495 AbstractCegarLoop]: Abstraction has has 400 places, 640 transitions, 9654 flow [2024-06-28 01:25:23,823 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 10.23076923076923) internal successors, (133), 13 states have internal predecessors, (133), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:25:23,823 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:25:23,823 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 01:25:23,823 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable121 [2024-06-28 01:25:23,823 INFO L420 AbstractCegarLoop]: === Iteration 123 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:25:23,823 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:25:23,823 INFO L85 PathProgramCache]: Analyzing trace with hash 1412738153, now seen corresponding path program 5 times [2024-06-28 01:25:23,823 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:25:23,823 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [670974798] [2024-06-28 01:25:23,823 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:25:23,823 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:25:23,829 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:25:24,898 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 01:25:24,898 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:25:24,899 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [670974798] [2024-06-28 01:25:24,899 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [670974798] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:25:24,899 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:25:24,899 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-28 01:25:24,899 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [764627705] [2024-06-28 01:25:24,899 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:25:24,899 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-28 01:25:24,899 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:25:24,899 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-28 01:25:24,899 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=120, Unknown=0, NotChecked=0, Total=156 [2024-06-28 01:25:25,059 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 38 [2024-06-28 01:25:25,059 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 400 places, 640 transitions, 9654 flow. Second operand has 13 states, 13 states have (on average 10.23076923076923) internal successors, (133), 13 states have internal predecessors, (133), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:25:25,059 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:25:25,059 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 38 [2024-06-28 01:25:25,059 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:25:26,591 INFO L124 PetriNetUnfolderBase]: 2863/5262 cut-off events. [2024-06-28 01:25:26,591 INFO L125 PetriNetUnfolderBase]: For 237849/237849 co-relation queries the response was YES. [2024-06-28 01:25:26,635 INFO L83 FinitePrefix]: Finished finitePrefix Result has 34208 conditions, 5262 events. 2863/5262 cut-off events. For 237849/237849 co-relation queries the response was YES. Maximal size of possible extension queue 337. Compared 36408 event pairs, 518 based on Foata normal form. 2/4923 useless extension candidates. Maximal degree in co-relation 34021. Up to 4002 conditions per place. [2024-06-28 01:25:26,652 INFO L140 encePairwiseOnDemand]: 26/38 looper letters, 503 selfloop transitions, 183 changer transitions 0/694 dead transitions. [2024-06-28 01:25:26,652 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 411 places, 694 transitions, 11671 flow [2024-06-28 01:25:26,653 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-28 01:25:26,653 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-28 01:25:26,653 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 203 transitions. [2024-06-28 01:25:26,653 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4451754385964912 [2024-06-28 01:25:26,653 INFO L175 Difference]: Start difference. First operand has 400 places, 640 transitions, 9654 flow. Second operand 12 states and 203 transitions. [2024-06-28 01:25:26,653 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 411 places, 694 transitions, 11671 flow [2024-06-28 01:25:27,942 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 406 places, 694 transitions, 11491 flow, removed 13 selfloop flow, removed 5 redundant places. [2024-06-28 01:25:27,950 INFO L231 Difference]: Finished difference. Result has 408 places, 645 transitions, 9974 flow [2024-06-28 01:25:27,950 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=9474, PETRI_DIFFERENCE_MINUEND_PLACES=395, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=640, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=179, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=458, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=9974, PETRI_PLACES=408, PETRI_TRANSITIONS=645} [2024-06-28 01:25:27,951 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 366 predicate places. [2024-06-28 01:25:27,951 INFO L495 AbstractCegarLoop]: Abstraction has has 408 places, 645 transitions, 9974 flow [2024-06-28 01:25:27,951 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 10.23076923076923) internal successors, (133), 13 states have internal predecessors, (133), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:25:27,951 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:25:27,951 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 01:25:27,951 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable122 [2024-06-28 01:25:27,951 INFO L420 AbstractCegarLoop]: === Iteration 124 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:25:27,951 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:25:27,951 INFO L85 PathProgramCache]: Analyzing trace with hash 296461122, now seen corresponding path program 3 times [2024-06-28 01:25:27,952 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:25:27,952 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1727434539] [2024-06-28 01:25:27,952 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:25:27,952 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:25:27,960 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:25:28,889 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 01:25:28,889 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:25:28,889 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1727434539] [2024-06-28 01:25:28,889 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1727434539] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:25:28,889 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:25:28,890 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-28 01:25:28,890 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [358516220] [2024-06-28 01:25:28,890 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:25:28,890 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-28 01:25:28,890 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:25:28,890 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-28 01:25:28,891 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=119, Unknown=0, NotChecked=0, Total=156 [2024-06-28 01:25:29,048 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 38 [2024-06-28 01:25:29,048 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 408 places, 645 transitions, 9974 flow. Second operand has 13 states, 13 states have (on average 10.23076923076923) internal successors, (133), 13 states have internal predecessors, (133), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:25:29,049 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:25:29,049 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 38 [2024-06-28 01:25:29,049 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:25:30,696 INFO L124 PetriNetUnfolderBase]: 2876/5282 cut-off events. [2024-06-28 01:25:30,696 INFO L125 PetriNetUnfolderBase]: For 244972/244972 co-relation queries the response was YES. [2024-06-28 01:25:30,742 INFO L83 FinitePrefix]: Finished finitePrefix Result has 34673 conditions, 5282 events. 2876/5282 cut-off events. For 244972/244972 co-relation queries the response was YES. Maximal size of possible extension queue 339. Compared 36447 event pairs, 458 based on Foata normal form. 2/4937 useless extension candidates. Maximal degree in co-relation 34484. Up to 2982 conditions per place. [2024-06-28 01:25:30,760 INFO L140 encePairwiseOnDemand]: 25/38 looper letters, 378 selfloop transitions, 306 changer transitions 0/692 dead transitions. [2024-06-28 01:25:30,760 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 421 places, 692 transitions, 11640 flow [2024-06-28 01:25:30,760 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2024-06-28 01:25:30,760 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2024-06-28 01:25:30,760 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 237 transitions. [2024-06-28 01:25:30,761 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44548872180451127 [2024-06-28 01:25:30,761 INFO L175 Difference]: Start difference. First operand has 408 places, 645 transitions, 9974 flow. Second operand 14 states and 237 transitions. [2024-06-28 01:25:30,761 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 421 places, 692 transitions, 11640 flow [2024-06-28 01:25:32,067 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 414 places, 692 transitions, 11363 flow, removed 19 selfloop flow, removed 7 redundant places. [2024-06-28 01:25:32,075 INFO L231 Difference]: Finished difference. Result has 415 places, 647 transitions, 10415 flow [2024-06-28 01:25:32,075 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=9697, PETRI_DIFFERENCE_MINUEND_PLACES=401, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=645, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=304, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=339, PETRI_DIFFERENCE_SUBTRAHEND_STATES=14, PETRI_FLOW=10415, PETRI_PLACES=415, PETRI_TRANSITIONS=647} [2024-06-28 01:25:32,076 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 373 predicate places. [2024-06-28 01:25:32,076 INFO L495 AbstractCegarLoop]: Abstraction has has 415 places, 647 transitions, 10415 flow [2024-06-28 01:25:32,076 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 10.23076923076923) internal successors, (133), 13 states have internal predecessors, (133), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:25:32,076 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:25:32,076 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:25:32,076 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable123 [2024-06-28 01:25:32,076 INFO L420 AbstractCegarLoop]: === Iteration 125 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:25:32,076 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:25:32,076 INFO L85 PathProgramCache]: Analyzing trace with hash 296460967, now seen corresponding path program 6 times [2024-06-28 01:25:32,077 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:25:32,077 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [703592247] [2024-06-28 01:25:32,077 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:25:32,077 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:25:32,082 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:25:33,050 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 01:25:33,050 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:25:33,050 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [703592247] [2024-06-28 01:25:33,050 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [703592247] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:25:33,050 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:25:33,051 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-28 01:25:33,051 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1916591476] [2024-06-28 01:25:33,051 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:25:33,053 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-28 01:25:33,053 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:25:33,054 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-28 01:25:33,054 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=119, Unknown=0, NotChecked=0, Total=156 [2024-06-28 01:25:33,207 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 38 [2024-06-28 01:25:33,207 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 415 places, 647 transitions, 10415 flow. Second operand has 13 states, 13 states have (on average 10.23076923076923) internal successors, (133), 13 states have internal predecessors, (133), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:25:33,207 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:25:33,207 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 38 [2024-06-28 01:25:33,207 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:25:34,783 INFO L124 PetriNetUnfolderBase]: 2993/5564 cut-off events. [2024-06-28 01:25:34,783 INFO L125 PetriNetUnfolderBase]: For 338130/338130 co-relation queries the response was YES. [2024-06-28 01:25:34,833 INFO L83 FinitePrefix]: Finished finitePrefix Result has 36427 conditions, 5564 events. 2993/5564 cut-off events. For 338130/338130 co-relation queries the response was YES. Maximal size of possible extension queue 342. Compared 39138 event pairs, 469 based on Foata normal form. 14/5216 useless extension candidates. Maximal degree in co-relation 36236. Up to 2958 conditions per place. [2024-06-28 01:25:34,850 INFO L140 encePairwiseOnDemand]: 24/38 looper letters, 383 selfloop transitions, 312 changer transitions 0/703 dead transitions. [2024-06-28 01:25:34,850 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 427 places, 703 transitions, 12109 flow [2024-06-28 01:25:34,851 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-06-28 01:25:34,851 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2024-06-28 01:25:34,851 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 233 transitions. [2024-06-28 01:25:34,851 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4716599190283401 [2024-06-28 01:25:34,851 INFO L175 Difference]: Start difference. First operand has 415 places, 647 transitions, 10415 flow. Second operand 13 states and 233 transitions. [2024-06-28 01:25:34,851 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 427 places, 703 transitions, 12109 flow [2024-06-28 01:25:36,321 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 414 places, 703 transitions, 11405 flow, removed 44 selfloop flow, removed 13 redundant places. [2024-06-28 01:25:36,329 INFO L231 Difference]: Finished difference. Result has 416 places, 651 transitions, 10560 flow [2024-06-28 01:25:36,330 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=9711, PETRI_DIFFERENCE_MINUEND_PLACES=402, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=647, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=308, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=335, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=10560, PETRI_PLACES=416, PETRI_TRANSITIONS=651} [2024-06-28 01:25:36,330 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 374 predicate places. [2024-06-28 01:25:36,330 INFO L495 AbstractCegarLoop]: Abstraction has has 416 places, 651 transitions, 10560 flow [2024-06-28 01:25:36,330 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 10.23076923076923) internal successors, (133), 13 states have internal predecessors, (133), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:25:36,330 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:25:36,330 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 01:25:36,330 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable124 [2024-06-28 01:25:36,330 INFO L420 AbstractCegarLoop]: === Iteration 126 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:25:36,331 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:25:36,331 INFO L85 PathProgramCache]: Analyzing trace with hash 1516625248, now seen corresponding path program 2 times [2024-06-28 01:25:36,331 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:25:36,331 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [526728037] [2024-06-28 01:25:36,331 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:25:36,331 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:25:36,339 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:25:37,504 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:25:37,504 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:25:37,504 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [526728037] [2024-06-28 01:25:37,504 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [526728037] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:25:37,504 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:25:37,504 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-28 01:25:37,504 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2127506386] [2024-06-28 01:25:37,504 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:25:37,505 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-28 01:25:37,505 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:25:37,505 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-28 01:25:37,505 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=123, Unknown=0, NotChecked=0, Total=156 [2024-06-28 01:25:37,629 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 38 [2024-06-28 01:25:37,629 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 416 places, 651 transitions, 10560 flow. Second operand has 13 states, 13 states have (on average 10.23076923076923) internal successors, (133), 13 states have internal predecessors, (133), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:25:37,629 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:25:37,629 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 38 [2024-06-28 01:25:37,629 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:25:39,203 INFO L124 PetriNetUnfolderBase]: 3058/5666 cut-off events. [2024-06-28 01:25:39,203 INFO L125 PetriNetUnfolderBase]: For 252882/252882 co-relation queries the response was YES. [2024-06-28 01:25:39,257 INFO L83 FinitePrefix]: Finished finitePrefix Result has 37495 conditions, 5666 events. 3058/5666 cut-off events. For 252882/252882 co-relation queries the response was YES. Maximal size of possible extension queue 353. Compared 40098 event pairs, 567 based on Foata normal form. 2/5296 useless extension candidates. Maximal degree in co-relation 37303. Up to 4058 conditions per place. [2024-06-28 01:25:39,276 INFO L140 encePairwiseOnDemand]: 27/38 looper letters, 395 selfloop transitions, 308 changer transitions 0/711 dead transitions. [2024-06-28 01:25:39,277 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 426 places, 711 transitions, 12545 flow [2024-06-28 01:25:39,277 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 01:25:39,277 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 01:25:39,277 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 185 transitions. [2024-06-28 01:25:39,277 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44258373205741625 [2024-06-28 01:25:39,277 INFO L175 Difference]: Start difference. First operand has 416 places, 651 transitions, 10560 flow. Second operand 11 states and 185 transitions. [2024-06-28 01:25:39,277 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 426 places, 711 transitions, 12545 flow [2024-06-28 01:25:40,525 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 416 places, 711 transitions, 12062 flow, removed 9 selfloop flow, removed 10 redundant places. [2024-06-28 01:25:40,534 INFO L231 Difference]: Finished difference. Result has 418 places, 674 transitions, 11148 flow [2024-06-28 01:25:40,534 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=10085, PETRI_DIFFERENCE_MINUEND_PLACES=406, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=651, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=285, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=364, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=11148, PETRI_PLACES=418, PETRI_TRANSITIONS=674} [2024-06-28 01:25:40,534 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 376 predicate places. [2024-06-28 01:25:40,535 INFO L495 AbstractCegarLoop]: Abstraction has has 418 places, 674 transitions, 11148 flow [2024-06-28 01:25:40,535 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 10.23076923076923) internal successors, (133), 13 states have internal predecessors, (133), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:25:40,535 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:25:40,535 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 01:25:40,535 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable125 [2024-06-28 01:25:40,535 INFO L420 AbstractCegarLoop]: === Iteration 127 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:25:40,535 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:25:40,536 INFO L85 PathProgramCache]: Analyzing trace with hash -1835299534, now seen corresponding path program 3 times [2024-06-28 01:25:40,536 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:25:40,536 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [816478505] [2024-06-28 01:25:40,536 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:25:40,536 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:25:40,544 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:25:41,560 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 01:25:41,561 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:25:41,561 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [816478505] [2024-06-28 01:25:41,561 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [816478505] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:25:41,561 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:25:41,561 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-28 01:25:41,561 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1296183409] [2024-06-28 01:25:41,561 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:25:41,561 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-28 01:25:41,561 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:25:41,562 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-28 01:25:41,562 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=102, Unknown=0, NotChecked=0, Total=132 [2024-06-28 01:25:41,678 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 38 [2024-06-28 01:25:41,678 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 418 places, 674 transitions, 11148 flow. Second operand has 12 states, 12 states have (on average 10.333333333333334) internal successors, (124), 12 states have internal predecessors, (124), 0 states have call successors, (0), 0 states 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 01:25:41,679 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:25:41,679 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 38 [2024-06-28 01:25:41,679 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:25:43,210 INFO L124 PetriNetUnfolderBase]: 3095/5749 cut-off events. [2024-06-28 01:25:43,210 INFO L125 PetriNetUnfolderBase]: For 271709/271709 co-relation queries the response was YES. [2024-06-28 01:25:43,264 INFO L83 FinitePrefix]: Finished finitePrefix Result has 38057 conditions, 5749 events. 3095/5749 cut-off events. For 271709/271709 co-relation queries the response was YES. Maximal size of possible extension queue 356. Compared 40946 event pairs, 567 based on Foata normal form. 2/5376 useless extension candidates. Maximal degree in co-relation 37863. Up to 3952 conditions per place. [2024-06-28 01:25:43,284 INFO L140 encePairwiseOnDemand]: 27/38 looper letters, 403 selfloop transitions, 306 changer transitions 0/717 dead transitions. [2024-06-28 01:25:43,284 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 428 places, 717 transitions, 13036 flow [2024-06-28 01:25:43,285 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 01:25:43,285 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 01:25:43,285 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 189 transitions. [2024-06-28 01:25:43,285 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45215311004784686 [2024-06-28 01:25:43,285 INFO L175 Difference]: Start difference. First operand has 418 places, 674 transitions, 11148 flow. Second operand 11 states and 189 transitions. [2024-06-28 01:25:43,285 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 428 places, 717 transitions, 13036 flow [2024-06-28 01:25:44,819 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 421 places, 717 transitions, 12527 flow, removed 13 selfloop flow, removed 7 redundant places. [2024-06-28 01:25:44,827 INFO L231 Difference]: Finished difference. Result has 422 places, 676 transitions, 11277 flow [2024-06-28 01:25:44,827 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=10639, PETRI_DIFFERENCE_MINUEND_PLACES=411, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=674, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=305, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=369, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=11277, PETRI_PLACES=422, PETRI_TRANSITIONS=676} [2024-06-28 01:25:44,828 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 380 predicate places. [2024-06-28 01:25:44,828 INFO L495 AbstractCegarLoop]: Abstraction has has 422 places, 676 transitions, 11277 flow [2024-06-28 01:25:44,828 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 10.333333333333334) internal successors, (124), 12 states have internal predecessors, (124), 0 states have call successors, (0), 0 states 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 01:25:44,828 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:25:44,828 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 01:25:44,828 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable126 [2024-06-28 01:25:44,828 INFO L420 AbstractCegarLoop]: === Iteration 128 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:25:44,829 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:25:44,829 INFO L85 PathProgramCache]: Analyzing trace with hash 1343110150, now seen corresponding path program 4 times [2024-06-28 01:25:44,829 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:25:44,829 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [674889371] [2024-06-28 01:25:44,829 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:25:44,829 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:25:44,838 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:25:45,906 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 01:25:45,907 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:25:45,907 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [674889371] [2024-06-28 01:25:45,907 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [674889371] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:25:45,907 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:25:45,907 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-28 01:25:45,907 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1942491322] [2024-06-28 01:25:45,907 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:25:45,908 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-28 01:25:45,908 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:25:45,908 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-28 01:25:45,908 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=122, Unknown=0, NotChecked=0, Total=156 [2024-06-28 01:25:46,054 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 38 [2024-06-28 01:25:46,054 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 422 places, 676 transitions, 11277 flow. Second operand has 13 states, 13 states have (on average 10.23076923076923) internal successors, (133), 13 states have internal predecessors, (133), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:25:46,054 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:25:46,054 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 38 [2024-06-28 01:25:46,054 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:25:47,714 INFO L124 PetriNetUnfolderBase]: 3130/5805 cut-off events. [2024-06-28 01:25:47,714 INFO L125 PetriNetUnfolderBase]: For 278355/278355 co-relation queries the response was YES. [2024-06-28 01:25:47,769 INFO L83 FinitePrefix]: Finished finitePrefix Result has 38638 conditions, 5805 events. 3130/5805 cut-off events. For 278355/278355 co-relation queries the response was YES. Maximal size of possible extension queue 363. Compared 41341 event pairs, 565 based on Foata normal form. 2/5423 useless extension candidates. Maximal degree in co-relation 38444. Up to 3457 conditions per place. [2024-06-28 01:25:47,789 INFO L140 encePairwiseOnDemand]: 25/38 looper letters, 424 selfloop transitions, 285 changer transitions 0/717 dead transitions. [2024-06-28 01:25:47,789 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 433 places, 717 transitions, 12963 flow [2024-06-28 01:25:47,790 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-28 01:25:47,790 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-28 01:25:47,790 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 201 transitions. [2024-06-28 01:25:47,790 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4407894736842105 [2024-06-28 01:25:47,791 INFO L175 Difference]: Start difference. First operand has 422 places, 676 transitions, 11277 flow. Second operand 12 states and 201 transitions. [2024-06-28 01:25:47,791 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 433 places, 717 transitions, 12963 flow [2024-06-28 01:25:49,205 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 426 places, 717 transitions, 12591 flow, removed 5 selfloop flow, removed 7 redundant places. [2024-06-28 01:25:49,214 INFO L231 Difference]: Finished difference. Result has 427 places, 682 transitions, 11595 flow [2024-06-28 01:25:49,214 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=10905, PETRI_DIFFERENCE_MINUEND_PLACES=415, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=676, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=279, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=395, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=11595, PETRI_PLACES=427, PETRI_TRANSITIONS=682} [2024-06-28 01:25:49,214 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 385 predicate places. [2024-06-28 01:25:49,214 INFO L495 AbstractCegarLoop]: Abstraction has has 427 places, 682 transitions, 11595 flow [2024-06-28 01:25:49,214 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 10.23076923076923) internal successors, (133), 13 states have internal predecessors, (133), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:25:49,214 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:25:49,215 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 01:25:49,215 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable127 [2024-06-28 01:25:49,215 INFO L420 AbstractCegarLoop]: === Iteration 129 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:25:49,215 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:25:49,215 INFO L85 PathProgramCache]: Analyzing trace with hash -1842927890, now seen corresponding path program 5 times [2024-06-28 01:25:49,215 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:25:49,215 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [810711424] [2024-06-28 01:25:49,215 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:25:49,216 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:25:49,223 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:25:50,340 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 01:25:50,341 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:25:50,341 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [810711424] [2024-06-28 01:25:50,341 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [810711424] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:25:50,341 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:25:50,341 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-28 01:25:50,341 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1403407179] [2024-06-28 01:25:50,341 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:25:50,341 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-28 01:25:50,341 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:25:50,342 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-28 01:25:50,342 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=116, Unknown=0, NotChecked=0, Total=156 [2024-06-28 01:25:50,469 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 38 [2024-06-28 01:25:50,469 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 427 places, 682 transitions, 11595 flow. Second operand has 13 states, 13 states have (on average 10.23076923076923) internal successors, (133), 13 states have internal predecessors, (133), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:25:50,469 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:25:50,469 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 38 [2024-06-28 01:25:50,469 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:25:52,178 INFO L124 PetriNetUnfolderBase]: 3165/5858 cut-off events. [2024-06-28 01:25:52,178 INFO L125 PetriNetUnfolderBase]: For 282382/282382 co-relation queries the response was YES. [2024-06-28 01:25:52,237 INFO L83 FinitePrefix]: Finished finitePrefix Result has 39907 conditions, 5858 events. 3165/5858 cut-off events. For 282382/282382 co-relation queries the response was YES. Maximal size of possible extension queue 370. Compared 41658 event pairs, 516 based on Foata normal form. 2/5471 useless extension candidates. Maximal degree in co-relation 39711. Up to 3442 conditions per place. [2024-06-28 01:25:52,258 INFO L140 encePairwiseOnDemand]: 24/38 looper letters, 417 selfloop transitions, 302 changer transitions 0/727 dead transitions. [2024-06-28 01:25:52,259 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 438 places, 727 transitions, 13341 flow [2024-06-28 01:25:52,259 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-28 01:25:52,259 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-28 01:25:52,259 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 204 transitions. [2024-06-28 01:25:52,259 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4473684210526316 [2024-06-28 01:25:52,259 INFO L175 Difference]: Start difference. First operand has 427 places, 682 transitions, 11595 flow. Second operand 12 states and 204 transitions. [2024-06-28 01:25:52,260 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 438 places, 727 transitions, 13341 flow [2024-06-28 01:25:53,819 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 429 places, 727 transitions, 12785 flow, removed 29 selfloop flow, removed 9 redundant places. [2024-06-28 01:25:53,828 INFO L231 Difference]: Finished difference. Result has 430 places, 688 transitions, 11775 flow [2024-06-28 01:25:53,828 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=11047, PETRI_DIFFERENCE_MINUEND_PLACES=418, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=682, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=296, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=384, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=11775, PETRI_PLACES=430, PETRI_TRANSITIONS=688} [2024-06-28 01:25:53,829 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 388 predicate places. [2024-06-28 01:25:53,829 INFO L495 AbstractCegarLoop]: Abstraction has has 430 places, 688 transitions, 11775 flow [2024-06-28 01:25:53,829 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 10.23076923076923) internal successors, (133), 13 states have internal predecessors, (133), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:25:53,829 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:25:53,829 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 01:25:53,829 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable128 [2024-06-28 01:25:53,829 INFO L420 AbstractCegarLoop]: === Iteration 130 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:25:53,830 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:25:53,830 INFO L85 PathProgramCache]: Analyzing trace with hash 1335960310, now seen corresponding path program 6 times [2024-06-28 01:25:53,830 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:25:53,830 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [213516216] [2024-06-28 01:25:53,830 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:25:53,830 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:25:53,838 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:25:54,889 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 01:25:54,889 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:25:54,890 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [213516216] [2024-06-28 01:25:54,890 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [213516216] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:25:54,890 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:25:54,890 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-28 01:25:54,890 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1623510297] [2024-06-28 01:25:54,890 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:25:54,890 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-28 01:25:54,890 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:25:54,890 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-28 01:25:54,890 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=120, Unknown=0, NotChecked=0, Total=156 [2024-06-28 01:25:55,025 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 38 [2024-06-28 01:25:55,026 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 430 places, 688 transitions, 11775 flow. Second operand has 13 states, 13 states have (on average 10.23076923076923) internal successors, (133), 13 states have internal predecessors, (133), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:25:55,026 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:25:55,026 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 38 [2024-06-28 01:25:55,026 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:25:56,851 INFO L124 PetriNetUnfolderBase]: 3161/5852 cut-off events. [2024-06-28 01:25:56,852 INFO L125 PetriNetUnfolderBase]: For 272000/272000 co-relation queries the response was YES. [2024-06-28 01:25:56,905 INFO L83 FinitePrefix]: Finished finitePrefix Result has 39582 conditions, 5852 events. 3161/5852 cut-off events. For 272000/272000 co-relation queries the response was YES. Maximal size of possible extension queue 370. Compared 41671 event pairs, 572 based on Foata normal form. 2/5465 useless extension candidates. Maximal degree in co-relation 39386. Up to 3490 conditions per place. [2024-06-28 01:25:56,923 INFO L140 encePairwiseOnDemand]: 25/38 looper letters, 436 selfloop transitions, 282 changer transitions 0/726 dead transitions. [2024-06-28 01:25:56,923 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 441 places, 726 transitions, 13391 flow [2024-06-28 01:25:56,923 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-28 01:25:56,923 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-28 01:25:56,924 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 204 transitions. [2024-06-28 01:25:56,924 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4473684210526316 [2024-06-28 01:25:56,924 INFO L175 Difference]: Start difference. First operand has 430 places, 688 transitions, 11775 flow. Second operand 12 states and 204 transitions. [2024-06-28 01:25:56,924 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 441 places, 726 transitions, 13391 flow [2024-06-28 01:25:58,327 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 433 places, 726 transitions, 12868 flow, removed 32 selfloop flow, removed 8 redundant places. [2024-06-28 01:25:58,336 INFO L231 Difference]: Finished difference. Result has 434 places, 688 transitions, 11822 flow [2024-06-28 01:25:58,336 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=11252, PETRI_DIFFERENCE_MINUEND_PLACES=422, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=688, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=282, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=406, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=11822, PETRI_PLACES=434, PETRI_TRANSITIONS=688} [2024-06-28 01:25:58,336 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 392 predicate places. [2024-06-28 01:25:58,336 INFO L495 AbstractCegarLoop]: Abstraction has has 434 places, 688 transitions, 11822 flow [2024-06-28 01:25:58,336 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 10.23076923076923) internal successors, (133), 13 states have internal predecessors, (133), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:25:58,336 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:25:58,337 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 01:25:58,337 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable129 [2024-06-28 01:25:58,337 INFO L420 AbstractCegarLoop]: === Iteration 131 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:25:58,337 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:25:58,337 INFO L85 PathProgramCache]: Analyzing trace with hash 1335752920, now seen corresponding path program 7 times [2024-06-28 01:25:58,337 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:25:58,337 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1458408102] [2024-06-28 01:25:58,337 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:25:58,338 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:25:58,345 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:25:59,269 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 01:25:59,269 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:25:59,269 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1458408102] [2024-06-28 01:25:59,269 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1458408102] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:25:59,269 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:25:59,269 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-28 01:25:59,269 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2076513562] [2024-06-28 01:25:59,269 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:25:59,270 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-28 01:25:59,270 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:25:59,270 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-28 01:25:59,270 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=115, Unknown=0, NotChecked=0, Total=156 [2024-06-28 01:25:59,408 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 38 [2024-06-28 01:25:59,408 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 434 places, 688 transitions, 11822 flow. Second operand has 13 states, 13 states have (on average 10.23076923076923) internal successors, (133), 13 states have internal predecessors, (133), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:25:59,408 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:25:59,408 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 38 [2024-06-28 01:25:59,408 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:26:01,106 INFO L124 PetriNetUnfolderBase]: 3174/5871 cut-off events. [2024-06-28 01:26:01,106 INFO L125 PetriNetUnfolderBase]: For 279672/279672 co-relation queries the response was YES. [2024-06-28 01:26:01,163 INFO L83 FinitePrefix]: Finished finitePrefix Result has 39786 conditions, 5871 events. 3174/5871 cut-off events. For 279672/279672 co-relation queries the response was YES. Maximal size of possible extension queue 372. Compared 41814 event pairs, 569 based on Foata normal form. 2/5481 useless extension candidates. Maximal degree in co-relation 39589. Up to 3453 conditions per place. [2024-06-28 01:26:01,183 INFO L140 encePairwiseOnDemand]: 25/38 looper letters, 420 selfloop transitions, 303 changer transitions 0/731 dead transitions. [2024-06-28 01:26:01,183 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 446 places, 731 transitions, 13560 flow [2024-06-28 01:26:01,183 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-06-28 01:26:01,183 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2024-06-28 01:26:01,184 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 218 transitions. [2024-06-28 01:26:01,184 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44129554655870445 [2024-06-28 01:26:01,184 INFO L175 Difference]: Start difference. First operand has 434 places, 688 transitions, 11822 flow. Second operand 13 states and 218 transitions. [2024-06-28 01:26:01,184 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 446 places, 731 transitions, 13560 flow [2024-06-28 01:26:02,782 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 436 places, 731 transitions, 12958 flow, removed 8 selfloop flow, removed 10 redundant places. [2024-06-28 01:26:02,790 INFO L231 Difference]: Finished difference. Result has 437 places, 690 transitions, 11935 flow [2024-06-28 01:26:02,791 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=11220, PETRI_DIFFERENCE_MINUEND_PLACES=424, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=688, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=301, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=385, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=11935, PETRI_PLACES=437, PETRI_TRANSITIONS=690} [2024-06-28 01:26:02,791 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 395 predicate places. [2024-06-28 01:26:02,791 INFO L495 AbstractCegarLoop]: Abstraction has has 437 places, 690 transitions, 11935 flow [2024-06-28 01:26:02,792 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 10.23076923076923) internal successors, (133), 13 states have internal predecessors, (133), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:26:02,792 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:26:02,792 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 01:26:02,792 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable130 [2024-06-28 01:26:02,792 INFO L420 AbstractCegarLoop]: === Iteration 132 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:26:02,792 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:26:02,792 INFO L85 PathProgramCache]: Analyzing trace with hash -1842718144, now seen corresponding path program 4 times [2024-06-28 01:26:02,793 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:26:02,793 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [5653988] [2024-06-28 01:26:02,793 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:26:02,793 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:26:02,800 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:26:03,778 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 01:26:03,778 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:26:03,778 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [5653988] [2024-06-28 01:26:03,778 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [5653988] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:26:03,778 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:26:03,778 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-28 01:26:03,778 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [829714692] [2024-06-28 01:26:03,778 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:26:03,778 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-28 01:26:03,778 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:26:03,779 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-28 01:26:03,779 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=115, Unknown=0, NotChecked=0, Total=156 [2024-06-28 01:26:03,889 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 38 [2024-06-28 01:26:03,889 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 437 places, 690 transitions, 11935 flow. Second operand has 13 states, 13 states have (on average 10.23076923076923) internal successors, (133), 13 states have internal predecessors, (133), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:26:03,890 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:26:03,890 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 38 [2024-06-28 01:26:03,890 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:26:05,409 INFO L124 PetriNetUnfolderBase]: 3191/5910 cut-off events. [2024-06-28 01:26:05,409 INFO L125 PetriNetUnfolderBase]: For 283838/283838 co-relation queries the response was YES. [2024-06-28 01:26:05,467 INFO L83 FinitePrefix]: Finished finitePrefix Result has 39925 conditions, 5910 events. 3191/5910 cut-off events. For 283838/283838 co-relation queries the response was YES. Maximal size of possible extension queue 374. Compared 42201 event pairs, 588 based on Foata normal form. 2/5518 useless extension candidates. Maximal degree in co-relation 39727. Up to 4275 conditions per place. [2024-06-28 01:26:05,486 INFO L140 encePairwiseOnDemand]: 27/38 looper letters, 418 selfloop transitions, 305 changer transitions 0/731 dead transitions. [2024-06-28 01:26:05,486 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 447 places, 731 transitions, 13597 flow [2024-06-28 01:26:05,487 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 01:26:05,487 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 01:26:05,487 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 187 transitions. [2024-06-28 01:26:05,487 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4473684210526316 [2024-06-28 01:26:05,487 INFO L175 Difference]: Start difference. First operand has 437 places, 690 transitions, 11935 flow. Second operand 11 states and 187 transitions. [2024-06-28 01:26:05,487 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 447 places, 731 transitions, 13597 flow [2024-06-28 01:26:06,879 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 436 places, 731 transitions, 12906 flow, removed 44 selfloop flow, removed 11 redundant places. [2024-06-28 01:26:06,888 INFO L231 Difference]: Finished difference. Result has 437 places, 691 transitions, 11877 flow [2024-06-28 01:26:06,889 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=11244, PETRI_DIFFERENCE_MINUEND_PLACES=426, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=690, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=304, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=385, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=11877, PETRI_PLACES=437, PETRI_TRANSITIONS=691} [2024-06-28 01:26:06,889 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 395 predicate places. [2024-06-28 01:26:06,889 INFO L495 AbstractCegarLoop]: Abstraction has has 437 places, 691 transitions, 11877 flow [2024-06-28 01:26:06,889 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 10.23076923076923) internal successors, (133), 13 states have internal predecessors, (133), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:26:06,889 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:26:06,889 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 01:26:06,889 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable131 [2024-06-28 01:26:06,889 INFO L420 AbstractCegarLoop]: === Iteration 133 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:26:06,889 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:26:06,889 INFO L85 PathProgramCache]: Analyzing trace with hash -1842933625, now seen corresponding path program 7 times [2024-06-28 01:26:06,890 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:26:06,890 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1035803184] [2024-06-28 01:26:06,890 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:26:06,890 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:26:06,896 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:26:07,841 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:26:07,841 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:26:07,841 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1035803184] [2024-06-28 01:26:07,841 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1035803184] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:26:07,841 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:26:07,841 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-28 01:26:07,841 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1073108813] [2024-06-28 01:26:07,841 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:26:07,841 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-28 01:26:07,842 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:26:07,842 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-28 01:26:07,842 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=116, Unknown=0, NotChecked=0, Total=156 [2024-06-28 01:26:07,957 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 38 [2024-06-28 01:26:07,958 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 437 places, 691 transitions, 11877 flow. Second operand has 13 states, 13 states have (on average 10.23076923076923) internal successors, (133), 13 states have internal predecessors, (133), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:26:07,958 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:26:07,958 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 38 [2024-06-28 01:26:07,958 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:26:09,476 INFO L124 PetriNetUnfolderBase]: 3208/5951 cut-off events. [2024-06-28 01:26:09,476 INFO L125 PetriNetUnfolderBase]: For 284811/284811 co-relation queries the response was YES. [2024-06-28 01:26:09,538 INFO L83 FinitePrefix]: Finished finitePrefix Result has 39868 conditions, 5951 events. 3208/5951 cut-off events. For 284811/284811 co-relation queries the response was YES. Maximal size of possible extension queue 376. Compared 42599 event pairs, 674 based on Foata normal form. 2/5556 useless extension candidates. Maximal degree in co-relation 39669. Up to 4704 conditions per place. [2024-06-28 01:26:09,561 INFO L140 encePairwiseOnDemand]: 26/38 looper letters, 554 selfloop transitions, 168 changer transitions 0/730 dead transitions. [2024-06-28 01:26:09,561 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 448 places, 730 transitions, 13584 flow [2024-06-28 01:26:09,562 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-28 01:26:09,562 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-28 01:26:09,562 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 194 transitions. [2024-06-28 01:26:09,562 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.42543859649122806 [2024-06-28 01:26:09,562 INFO L175 Difference]: Start difference. First operand has 437 places, 691 transitions, 11877 flow. Second operand 12 states and 194 transitions. [2024-06-28 01:26:09,562 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 448 places, 730 transitions, 13584 flow [2024-06-28 01:26:11,162 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 438 places, 730 transitions, 12914 flow, removed 3 selfloop flow, removed 10 redundant places. [2024-06-28 01:26:11,171 INFO L231 Difference]: Finished difference. Result has 439 places, 692 transitions, 11593 flow [2024-06-28 01:26:11,172 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=11213, PETRI_DIFFERENCE_MINUEND_PLACES=427, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=691, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=167, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=523, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=11593, PETRI_PLACES=439, PETRI_TRANSITIONS=692} [2024-06-28 01:26:11,172 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 397 predicate places. [2024-06-28 01:26:11,172 INFO L495 AbstractCegarLoop]: Abstraction has has 439 places, 692 transitions, 11593 flow [2024-06-28 01:26:11,172 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 10.23076923076923) internal successors, (133), 13 states have internal predecessors, (133), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:26:11,172 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:26:11,173 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 01:26:11,173 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable132 [2024-06-28 01:26:11,173 INFO L420 AbstractCegarLoop]: === Iteration 134 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:26:11,173 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:26:11,173 INFO L85 PathProgramCache]: Analyzing trace with hash 1142028836, now seen corresponding path program 5 times [2024-06-28 01:26:11,173 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:26:11,173 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2059433255] [2024-06-28 01:26:11,174 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:26:11,174 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:26:11,181 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:26:12,322 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 01:26:12,322 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:26:12,322 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2059433255] [2024-06-28 01:26:12,322 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2059433255] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:26:12,323 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:26:12,323 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-28 01:26:12,323 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1284119027] [2024-06-28 01:26:12,323 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:26:12,323 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-28 01:26:12,323 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:26:12,323 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-28 01:26:12,323 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=120, Unknown=0, NotChecked=0, Total=156 [2024-06-28 01:26:12,425 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 38 [2024-06-28 01:26:12,425 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 439 places, 692 transitions, 11593 flow. Second operand has 13 states, 13 states have (on average 10.23076923076923) internal successors, (133), 13 states have internal predecessors, (133), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:26:12,425 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:26:12,425 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 38 [2024-06-28 01:26:12,425 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:26:14,075 INFO L124 PetriNetUnfolderBase]: 3205/5946 cut-off events. [2024-06-28 01:26:14,075 INFO L125 PetriNetUnfolderBase]: For 268647/268647 co-relation queries the response was YES. [2024-06-28 01:26:14,132 INFO L83 FinitePrefix]: Finished finitePrefix Result has 39252 conditions, 5946 events. 3205/5946 cut-off events. For 268647/268647 co-relation queries the response was YES. Maximal size of possible extension queue 377. Compared 42606 event pairs, 588 based on Foata normal form. 2/5551 useless extension candidates. Maximal degree in co-relation 39052. Up to 4301 conditions per place. [2024-06-28 01:26:14,149 INFO L140 encePairwiseOnDemand]: 27/38 looper letters, 416 selfloop transitions, 308 changer transitions 0/732 dead transitions. [2024-06-28 01:26:14,149 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 449 places, 732 transitions, 13253 flow [2024-06-28 01:26:14,149 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 01:26:14,150 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 01:26:14,150 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 188 transitions. [2024-06-28 01:26:14,150 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44976076555023925 [2024-06-28 01:26:14,150 INFO L175 Difference]: Start difference. First operand has 439 places, 692 transitions, 11593 flow. Second operand 11 states and 188 transitions. [2024-06-28 01:26:14,150 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 449 places, 732 transitions, 13253 flow [2024-06-28 01:26:15,532 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 439 places, 732 transitions, 12881 flow, removed 16 selfloop flow, removed 10 redundant places. [2024-06-28 01:26:15,542 INFO L231 Difference]: Finished difference. Result has 440 places, 692 transitions, 11854 flow [2024-06-28 01:26:15,542 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=11227, PETRI_DIFFERENCE_MINUEND_PLACES=429, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=692, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=308, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=384, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=11854, PETRI_PLACES=440, PETRI_TRANSITIONS=692} [2024-06-28 01:26:15,542 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 398 predicate places. [2024-06-28 01:26:15,542 INFO L495 AbstractCegarLoop]: Abstraction has has 440 places, 692 transitions, 11854 flow [2024-06-28 01:26:15,543 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 10.23076923076923) internal successors, (133), 13 states have internal predecessors, (133), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:26:15,543 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:26:15,543 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 01:26:15,543 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable133 [2024-06-28 01:26:15,543 INFO L420 AbstractCegarLoop]: === Iteration 135 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:26:15,543 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:26:15,543 INFO L85 PathProgramCache]: Analyzing trace with hash -2036873035, now seen corresponding path program 8 times [2024-06-28 01:26:15,543 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:26:15,543 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [832468881] [2024-06-28 01:26:15,543 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:26:15,543 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:26:15,549 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:26:16,475 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:26:16,475 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:26:16,475 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [832468881] [2024-06-28 01:26:16,475 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [832468881] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:26:16,475 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:26:16,475 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-28 01:26:16,476 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [484834815] [2024-06-28 01:26:16,476 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:26:16,476 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-28 01:26:16,476 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:26:16,476 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-28 01:26:16,476 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=116, Unknown=0, NotChecked=0, Total=156 [2024-06-28 01:26:16,596 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 38 [2024-06-28 01:26:16,596 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 440 places, 692 transitions, 11854 flow. Second operand has 13 states, 13 states have (on average 10.23076923076923) internal successors, (133), 13 states have internal predecessors, (133), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:26:16,596 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:26:16,596 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 38 [2024-06-28 01:26:16,596 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:26:18,200 INFO L124 PetriNetUnfolderBase]: 3222/5986 cut-off events. [2024-06-28 01:26:18,200 INFO L125 PetriNetUnfolderBase]: For 275085/275085 co-relation queries the response was YES. [2024-06-28 01:26:18,259 INFO L83 FinitePrefix]: Finished finitePrefix Result has 39734 conditions, 5986 events. 3222/5986 cut-off events. For 275085/275085 co-relation queries the response was YES. Maximal size of possible extension queue 379. Compared 42948 event pairs, 688 based on Foata normal form. 2/5589 useless extension candidates. Maximal degree in co-relation 39533. Up to 4730 conditions per place. [2024-06-28 01:26:18,279 INFO L140 encePairwiseOnDemand]: 26/38 looper letters, 557 selfloop transitions, 168 changer transitions 0/733 dead transitions. [2024-06-28 01:26:18,279 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 451 places, 733 transitions, 13590 flow [2024-06-28 01:26:18,279 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-28 01:26:18,279 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-28 01:26:18,279 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 196 transitions. [2024-06-28 01:26:18,280 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4298245614035088 [2024-06-28 01:26:18,280 INFO L175 Difference]: Start difference. First operand has 440 places, 692 transitions, 11854 flow. Second operand 12 states and 196 transitions. [2024-06-28 01:26:18,280 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 451 places, 733 transitions, 13590 flow [2024-06-28 01:26:20,039 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 441 places, 733 transitions, 12843 flow, removed 3 selfloop flow, removed 10 redundant places. [2024-06-28 01:26:20,047 INFO L231 Difference]: Finished difference. Result has 443 places, 695 transitions, 11522 flow [2024-06-28 01:26:20,048 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=11113, PETRI_DIFFERENCE_MINUEND_PLACES=430, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=692, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=165, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=525, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=11522, PETRI_PLACES=443, PETRI_TRANSITIONS=695} [2024-06-28 01:26:20,048 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 401 predicate places. [2024-06-28 01:26:20,048 INFO L495 AbstractCegarLoop]: Abstraction has has 443 places, 695 transitions, 11522 flow [2024-06-28 01:26:20,048 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 10.23076923076923) internal successors, (133), 13 states have internal predecessors, (133), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:26:20,048 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:26:20,048 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 01:26:20,048 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable134 [2024-06-28 01:26:20,048 INFO L420 AbstractCegarLoop]: === Iteration 136 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:26:20,049 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:26:20,049 INFO L85 PathProgramCache]: Analyzing trace with hash -2036872880, now seen corresponding path program 8 times [2024-06-28 01:26:20,049 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:26:20,049 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [971083547] [2024-06-28 01:26:20,049 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:26:20,049 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:26:20,057 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:26:21,098 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:26:21,098 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:26:21,098 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [971083547] [2024-06-28 01:26:21,098 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [971083547] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:26:21,098 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:26:21,098 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-28 01:26:21,098 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [687342658] [2024-06-28 01:26:21,098 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:26:21,098 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-28 01:26:21,098 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:26:21,099 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-28 01:26:21,099 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=117, Unknown=0, NotChecked=0, Total=156 [2024-06-28 01:26:21,207 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 38 [2024-06-28 01:26:21,207 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 443 places, 695 transitions, 11522 flow. Second operand has 13 states, 13 states have (on average 10.23076923076923) internal successors, (133), 13 states have internal predecessors, (133), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:26:21,207 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:26:21,207 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 38 [2024-06-28 01:26:21,207 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:26:23,072 INFO L124 PetriNetUnfolderBase]: 3235/6005 cut-off events. [2024-06-28 01:26:23,073 INFO L125 PetriNetUnfolderBase]: For 278627/278627 co-relation queries the response was YES. [2024-06-28 01:26:23,125 INFO L83 FinitePrefix]: Finished finitePrefix Result has 39615 conditions, 6005 events. 3235/6005 cut-off events. For 278627/278627 co-relation queries the response was YES. Maximal size of possible extension queue 381. Compared 43094 event pairs, 531 based on Foata normal form. 2/5604 useless extension candidates. Maximal degree in co-relation 39412. Up to 3519 conditions per place. [2024-06-28 01:26:23,142 INFO L140 encePairwiseOnDemand]: 25/38 looper letters, 426 selfloop transitions, 304 changer transitions 0/738 dead transitions. [2024-06-28 01:26:23,142 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 455 places, 738 transitions, 13278 flow [2024-06-28 01:26:23,143 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-06-28 01:26:23,143 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2024-06-28 01:26:23,143 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 222 transitions. [2024-06-28 01:26:23,143 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4493927125506073 [2024-06-28 01:26:23,143 INFO L175 Difference]: Start difference. First operand has 443 places, 695 transitions, 11522 flow. Second operand 13 states and 222 transitions. [2024-06-28 01:26:23,143 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 455 places, 738 transitions, 13278 flow [2024-06-28 01:26:24,690 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 448 places, 738 transitions, 12946 flow, removed 17 selfloop flow, removed 7 redundant places. [2024-06-28 01:26:24,699 INFO L231 Difference]: Finished difference. Result has 449 places, 697 transitions, 11911 flow [2024-06-28 01:26:24,699 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=11190, PETRI_DIFFERENCE_MINUEND_PLACES=436, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=695, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=302, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=391, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=11911, PETRI_PLACES=449, PETRI_TRANSITIONS=697} [2024-06-28 01:26:24,699 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 407 predicate places. [2024-06-28 01:26:24,700 INFO L495 AbstractCegarLoop]: Abstraction has has 449 places, 697 transitions, 11911 flow [2024-06-28 01:26:24,700 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 10.23076923076923) internal successors, (133), 13 states have internal predecessors, (133), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:26:24,700 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:26:24,700 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 01:26:24,700 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable135 [2024-06-28 01:26:24,700 INFO L420 AbstractCegarLoop]: === Iteration 137 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:26:24,700 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:26:24,701 INFO L85 PathProgramCache]: Analyzing trace with hash -2042383285, now seen corresponding path program 9 times [2024-06-28 01:26:24,701 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:26:24,701 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [857040627] [2024-06-28 01:26:24,701 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:26:24,701 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:26:24,707 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:26:25,758 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 01:26:25,758 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:26:25,758 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [857040627] [2024-06-28 01:26:25,758 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [857040627] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:26:25,758 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:26:25,758 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-28 01:26:25,759 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1813148250] [2024-06-28 01:26:25,759 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:26:25,759 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-28 01:26:25,759 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:26:25,759 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-28 01:26:25,759 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=120, Unknown=0, NotChecked=0, Total=156 [2024-06-28 01:26:25,888 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 38 [2024-06-28 01:26:25,889 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 449 places, 697 transitions, 11911 flow. Second operand has 13 states, 13 states have (on average 10.23076923076923) internal successors, (133), 13 states have internal predecessors, (133), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:26:25,889 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:26:25,889 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 38 [2024-06-28 01:26:25,889 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:26:27,557 INFO L124 PetriNetUnfolderBase]: 3272/6082 cut-off events. [2024-06-28 01:26:27,557 INFO L125 PetriNetUnfolderBase]: For 307597/307597 co-relation queries the response was YES. [2024-06-28 01:26:27,618 INFO L83 FinitePrefix]: Finished finitePrefix Result has 41047 conditions, 6082 events. 3272/6082 cut-off events. For 307597/307597 co-relation queries the response was YES. Maximal size of possible extension queue 384. Compared 43816 event pairs, 679 based on Foata normal form. 2/5681 useless extension candidates. Maximal degree in co-relation 40843. Up to 4692 conditions per place. [2024-06-28 01:26:27,641 INFO L140 encePairwiseOnDemand]: 26/38 looper letters, 547 selfloop transitions, 186 changer transitions 0/741 dead transitions. [2024-06-28 01:26:27,641 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 460 places, 741 transitions, 13961 flow [2024-06-28 01:26:27,641 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-28 01:26:27,641 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-28 01:26:27,642 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 201 transitions. [2024-06-28 01:26:27,642 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4407894736842105 [2024-06-28 01:26:27,642 INFO L175 Difference]: Start difference. First operand has 449 places, 697 transitions, 11911 flow. Second operand 12 states and 201 transitions. [2024-06-28 01:26:27,642 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 460 places, 741 transitions, 13961 flow [2024-06-28 01:26:29,368 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 449 places, 741 transitions, 13264 flow, removed 46 selfloop flow, removed 11 redundant places. [2024-06-28 01:26:29,383 INFO L231 Difference]: Finished difference. Result has 451 places, 700 transitions, 11702 flow [2024-06-28 01:26:29,384 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=11214, PETRI_DIFFERENCE_MINUEND_PLACES=438, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=697, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=184, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=512, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=11702, PETRI_PLACES=451, PETRI_TRANSITIONS=700} [2024-06-28 01:26:29,384 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 409 predicate places. [2024-06-28 01:26:29,384 INFO L495 AbstractCegarLoop]: Abstraction has has 451 places, 700 transitions, 11702 flow [2024-06-28 01:26:29,384 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 10.23076923076923) internal successors, (133), 13 states have internal predecessors, (133), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:26:29,384 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:26:29,385 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 01:26:29,385 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable136 [2024-06-28 01:26:29,385 INFO L420 AbstractCegarLoop]: === Iteration 138 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:26:29,385 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:26:29,385 INFO L85 PathProgramCache]: Analyzing trace with hash 1136306825, now seen corresponding path program 10 times [2024-06-28 01:26:29,385 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:26:29,385 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2032600416] [2024-06-28 01:26:29,386 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:26:29,386 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:26:29,391 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:26:30,328 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 01:26:30,328 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:26:30,328 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2032600416] [2024-06-28 01:26:30,328 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2032600416] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:26:30,328 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:26:30,328 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-28 01:26:30,328 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2085593675] [2024-06-28 01:26:30,328 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:26:30,329 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-28 01:26:30,329 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:26:30,329 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-28 01:26:30,329 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=119, Unknown=0, NotChecked=0, Total=156 [2024-06-28 01:26:30,446 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 38 [2024-06-28 01:26:30,446 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 451 places, 700 transitions, 11702 flow. Second operand has 13 states, 13 states have (on average 10.23076923076923) internal successors, (133), 13 states have internal predecessors, (133), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:26:30,446 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:26:30,446 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 38 [2024-06-28 01:26:30,446 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:26:32,402 INFO L124 PetriNetUnfolderBase]: 3357/6309 cut-off events. [2024-06-28 01:26:32,402 INFO L125 PetriNetUnfolderBase]: For 395902/395902 co-relation queries the response was YES. [2024-06-28 01:26:32,467 INFO L83 FinitePrefix]: Finished finitePrefix Result has 40821 conditions, 6309 events. 3357/6309 cut-off events. For 395902/395902 co-relation queries the response was YES. Maximal size of possible extension queue 384. Compared 46066 event pairs, 586 based on Foata normal form. 14/5903 useless extension candidates. Maximal degree in co-relation 40615. Up to 3472 conditions per place. [2024-06-28 01:26:32,489 INFO L140 encePairwiseOnDemand]: 24/38 looper letters, 406 selfloop transitions, 335 changer transitions 0/749 dead transitions. [2024-06-28 01:26:32,489 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 463 places, 749 transitions, 13424 flow [2024-06-28 01:26:32,489 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-06-28 01:26:32,489 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2024-06-28 01:26:32,489 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 231 transitions. [2024-06-28 01:26:32,490 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4676113360323887 [2024-06-28 01:26:32,490 INFO L175 Difference]: Start difference. First operand has 451 places, 700 transitions, 11702 flow. Second operand 13 states and 231 transitions. [2024-06-28 01:26:32,490 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 463 places, 749 transitions, 13424 flow [2024-06-28 01:26:34,635 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 456 places, 749 transitions, 13103 flow, removed 33 selfloop flow, removed 7 redundant places. [2024-06-28 01:26:34,644 INFO L231 Difference]: Finished difference. Result has 457 places, 700 transitions, 12059 flow [2024-06-28 01:26:34,644 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=11381, PETRI_DIFFERENCE_MINUEND_PLACES=444, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=700, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=335, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=365, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=12059, PETRI_PLACES=457, PETRI_TRANSITIONS=700} [2024-06-28 01:26:34,645 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 415 predicate places. [2024-06-28 01:26:34,645 INFO L495 AbstractCegarLoop]: Abstraction has has 457 places, 700 transitions, 12059 flow [2024-06-28 01:26:34,645 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 10.23076923076923) internal successors, (133), 13 states have internal predecessors, (133), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:26:34,645 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:26:34,645 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 01:26:34,646 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable137 [2024-06-28 01:26:34,646 INFO L420 AbstractCegarLoop]: === Iteration 139 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:26:34,646 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:26:34,646 INFO L85 PathProgramCache]: Analyzing trace with hash -2042235260, now seen corresponding path program 9 times [2024-06-28 01:26:34,646 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:26:34,646 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2116555120] [2024-06-28 01:26:34,646 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:26:34,647 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:26:34,654 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:26:35,732 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 01:26:35,732 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:26:35,732 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2116555120] [2024-06-28 01:26:35,732 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2116555120] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:26:35,732 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:26:35,732 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-28 01:26:35,732 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [590009442] [2024-06-28 01:26:35,732 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:26:35,732 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-28 01:26:35,732 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:26:35,733 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-28 01:26:35,733 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=117, Unknown=0, NotChecked=0, Total=156 [2024-06-28 01:26:35,874 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 38 [2024-06-28 01:26:35,874 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 457 places, 700 transitions, 12059 flow. Second operand has 13 states, 13 states have (on average 10.23076923076923) internal successors, (133), 13 states have internal predecessors, (133), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:26:35,874 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:26:35,874 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 38 [2024-06-28 01:26:35,875 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:26:37,728 INFO L124 PetriNetUnfolderBase]: 3376/6321 cut-off events. [2024-06-28 01:26:37,728 INFO L125 PetriNetUnfolderBase]: For 292979/292979 co-relation queries the response was YES. [2024-06-28 01:26:37,790 INFO L83 FinitePrefix]: Finished finitePrefix Result has 41743 conditions, 6321 events. 3376/6321 cut-off events. For 292979/292979 co-relation queries the response was YES. Maximal size of possible extension queue 387. Compared 46163 event pairs, 584 based on Foata normal form. 2/5898 useless extension candidates. Maximal degree in co-relation 41536. Up to 3781 conditions per place. [2024-06-28 01:26:37,810 INFO L140 encePairwiseOnDemand]: 25/38 looper letters, 405 selfloop transitions, 330 changer transitions 0/743 dead transitions. [2024-06-28 01:26:37,810 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 469 places, 743 transitions, 13838 flow [2024-06-28 01:26:37,810 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-06-28 01:26:37,810 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2024-06-28 01:26:37,811 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 221 transitions. [2024-06-28 01:26:37,811 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4473684210526316 [2024-06-28 01:26:37,811 INFO L175 Difference]: Start difference. First operand has 457 places, 700 transitions, 12059 flow. Second operand 13 states and 221 transitions. [2024-06-28 01:26:37,811 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 469 places, 743 transitions, 13838 flow [2024-06-28 01:26:39,794 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 458 places, 743 transitions, 13167 flow, removed 2 selfloop flow, removed 11 redundant places. [2024-06-28 01:26:39,803 INFO L231 Difference]: Finished difference. Result has 460 places, 704 transitions, 12204 flow [2024-06-28 01:26:39,803 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=11391, PETRI_DIFFERENCE_MINUEND_PLACES=446, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=700, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=326, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=370, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=12204, PETRI_PLACES=460, PETRI_TRANSITIONS=704} [2024-06-28 01:26:39,803 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 418 predicate places. [2024-06-28 01:26:39,803 INFO L495 AbstractCegarLoop]: Abstraction has has 460 places, 704 transitions, 12204 flow [2024-06-28 01:26:39,803 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 10.23076923076923) internal successors, (133), 13 states have internal predecessors, (133), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:26:39,804 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:26:39,804 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 01:26:39,804 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable138 [2024-06-28 01:26:39,804 INFO L420 AbstractCegarLoop]: === Iteration 140 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:26:39,804 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:26:39,805 INFO L85 PathProgramCache]: Analyzing trace with hash -2042379410, now seen corresponding path program 10 times [2024-06-28 01:26:39,805 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:26:39,805 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1079974205] [2024-06-28 01:26:39,805 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:26:39,805 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:26:39,812 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:26:40,722 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 01:26:40,723 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:26:40,723 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1079974205] [2024-06-28 01:26:40,723 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1079974205] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:26:40,723 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:26:40,723 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-28 01:26:40,723 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [782915524] [2024-06-28 01:26:40,723 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:26:40,724 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-28 01:26:40,724 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:26:40,724 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-28 01:26:40,724 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=120, Unknown=0, NotChecked=0, Total=156 [2024-06-28 01:26:40,845 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 38 [2024-06-28 01:26:40,845 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 460 places, 704 transitions, 12204 flow. Second operand has 13 states, 13 states have (on average 10.23076923076923) internal successors, (133), 13 states have internal predecessors, (133), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:26:40,845 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:26:40,845 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 38 [2024-06-28 01:26:40,845 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:26:42,746 INFO L124 PetriNetUnfolderBase]: 3389/6340 cut-off events. [2024-06-28 01:26:42,746 INFO L125 PetriNetUnfolderBase]: For 301308/301308 co-relation queries the response was YES. [2024-06-28 01:26:42,805 INFO L83 FinitePrefix]: Finished finitePrefix Result has 42142 conditions, 6340 events. 3389/6340 cut-off events. For 301308/301308 co-relation queries the response was YES. Maximal size of possible extension queue 388. Compared 46258 event pairs, 591 based on Foata normal form. 2/5914 useless extension candidates. Maximal degree in co-relation 41933. Up to 3665 conditions per place. [2024-06-28 01:26:42,822 INFO L140 encePairwiseOnDemand]: 25/38 looper letters, 387 selfloop transitions, 347 changer transitions 0/742 dead transitions. [2024-06-28 01:26:42,823 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 471 places, 742 transitions, 13946 flow [2024-06-28 01:26:42,823 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-28 01:26:42,823 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-28 01:26:42,823 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 208 transitions. [2024-06-28 01:26:42,823 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45614035087719296 [2024-06-28 01:26:42,823 INFO L175 Difference]: Start difference. First operand has 460 places, 704 transitions, 12204 flow. Second operand 12 states and 208 transitions. [2024-06-28 01:26:42,823 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 471 places, 742 transitions, 13946 flow [2024-06-28 01:26:44,698 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 461 places, 742 transitions, 13201 flow, removed 48 selfloop flow, removed 10 redundant places. [2024-06-28 01:26:44,707 INFO L231 Difference]: Finished difference. Result has 462 places, 706 transitions, 12274 flow [2024-06-28 01:26:44,707 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=11459, PETRI_DIFFERENCE_MINUEND_PLACES=450, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=704, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=345, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=357, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=12274, PETRI_PLACES=462, PETRI_TRANSITIONS=706} [2024-06-28 01:26:44,707 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 420 predicate places. [2024-06-28 01:26:44,707 INFO L495 AbstractCegarLoop]: Abstraction has has 462 places, 706 transitions, 12274 flow [2024-06-28 01:26:44,707 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 10.23076923076923) internal successors, (133), 13 states have internal predecessors, (133), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:26:44,707 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:26:44,708 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 01:26:44,708 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable139 [2024-06-28 01:26:44,708 INFO L420 AbstractCegarLoop]: === Iteration 141 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:26:44,708 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:26:44,708 INFO L85 PathProgramCache]: Analyzing trace with hash -171230580, now seen corresponding path program 6 times [2024-06-28 01:26:44,708 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:26:44,708 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1836342575] [2024-06-28 01:26:44,708 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:26:44,708 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:26:44,719 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:26:45,690 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 01:26:45,690 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:26:45,690 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1836342575] [2024-06-28 01:26:45,690 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1836342575] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:26:45,691 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:26:45,691 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-28 01:26:45,691 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [450466645] [2024-06-28 01:26:45,691 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:26:45,691 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-28 01:26:45,691 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:26:45,691 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-28 01:26:45,691 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=115, Unknown=0, NotChecked=0, Total=156 [2024-06-28 01:26:45,782 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 38 [2024-06-28 01:26:45,782 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 462 places, 706 transitions, 12274 flow. Second operand has 13 states, 13 states have (on average 10.23076923076923) internal successors, (133), 13 states have internal predecessors, (133), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:26:45,782 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:26:45,782 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 38 [2024-06-28 01:26:45,782 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:26:47,604 INFO L124 PetriNetUnfolderBase]: 3406/6381 cut-off events. [2024-06-28 01:26:47,604 INFO L125 PetriNetUnfolderBase]: For 302152/302152 co-relation queries the response was YES. [2024-06-28 01:26:47,671 INFO L83 FinitePrefix]: Finished finitePrefix Result has 42181 conditions, 6381 events. 3406/6381 cut-off events. For 302152/302152 co-relation queries the response was YES. Maximal size of possible extension queue 390. Compared 46721 event pairs, 644 based on Foata normal form. 2/5953 useless extension candidates. Maximal degree in co-relation 41971. Up to 4671 conditions per place. [2024-06-28 01:26:47,694 INFO L140 encePairwiseOnDemand]: 27/38 looper letters, 455 selfloop transitions, 286 changer transitions 0/749 dead transitions. [2024-06-28 01:26:47,694 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 472 places, 749 transitions, 14022 flow [2024-06-28 01:26:47,694 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 01:26:47,694 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 01:26:47,694 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 186 transitions. [2024-06-28 01:26:47,695 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4449760765550239 [2024-06-28 01:26:47,695 INFO L175 Difference]: Start difference. First operand has 462 places, 706 transitions, 12274 flow. Second operand 11 states and 186 transitions. [2024-06-28 01:26:47,695 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 472 places, 749 transitions, 14022 flow [2024-06-28 01:26:49,843 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 461 places, 749 transitions, 13211 flow, removed 52 selfloop flow, removed 11 redundant places. [2024-06-28 01:26:49,852 INFO L231 Difference]: Finished difference. Result has 463 places, 710 transitions, 12109 flow [2024-06-28 01:26:49,853 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=11463, PETRI_DIFFERENCE_MINUEND_PLACES=451, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=706, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=282, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=422, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=12109, PETRI_PLACES=463, PETRI_TRANSITIONS=710} [2024-06-28 01:26:49,854 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 421 predicate places. [2024-06-28 01:26:49,854 INFO L495 AbstractCegarLoop]: Abstraction has has 463 places, 710 transitions, 12109 flow [2024-06-28 01:26:49,854 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 10.23076923076923) internal successors, (133), 13 states have internal predecessors, (133), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:26:49,855 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:26:49,855 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 01:26:49,855 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable140 [2024-06-28 01:26:49,855 INFO L420 AbstractCegarLoop]: === Iteration 142 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:26:49,855 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:26:49,855 INFO L85 PathProgramCache]: Analyzing trace with hash -961382474, now seen corresponding path program 7 times [2024-06-28 01:26:49,855 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:26:49,856 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1795048859] [2024-06-28 01:26:49,856 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:26:49,856 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:26:49,864 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:26:51,093 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 01:26:51,093 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:26:51,093 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1795048859] [2024-06-28 01:26:51,094 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1795048859] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:26:51,094 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:26:51,094 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-28 01:26:51,094 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1814037209] [2024-06-28 01:26:51,094 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:26:51,094 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-28 01:26:51,094 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:26:51,094 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-28 01:26:51,094 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=124, Unknown=0, NotChecked=0, Total=156 [2024-06-28 01:26:51,232 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 38 [2024-06-28 01:26:51,232 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 463 places, 710 transitions, 12109 flow. Second operand has 13 states, 13 states have (on average 10.23076923076923) internal successors, (133), 13 states have internal predecessors, (133), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:26:51,232 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:26:51,232 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 38 [2024-06-28 01:26:51,233 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:26:53,291 INFO L124 PetriNetUnfolderBase]: 3448/6458 cut-off events. [2024-06-28 01:26:53,292 INFO L125 PetriNetUnfolderBase]: For 300428/300428 co-relation queries the response was YES. [2024-06-28 01:26:53,349 INFO L83 FinitePrefix]: Finished finitePrefix Result has 42088 conditions, 6458 events. 3448/6458 cut-off events. For 300428/300428 co-relation queries the response was YES. Maximal size of possible extension queue 396. Compared 47431 event pairs, 643 based on Foata normal form. 2/6025 useless extension candidates. Maximal degree in co-relation 41877. Up to 4689 conditions per place. [2024-06-28 01:26:53,371 INFO L140 encePairwiseOnDemand]: 26/38 looper letters, 428 selfloop transitions, 318 changer transitions 0/754 dead transitions. [2024-06-28 01:26:53,371 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 473 places, 754 transitions, 13939 flow [2024-06-28 01:26:53,372 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 01:26:53,372 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 01:26:53,372 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 184 transitions. [2024-06-28 01:26:53,372 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44019138755980863 [2024-06-28 01:26:53,372 INFO L175 Difference]: Start difference. First operand has 463 places, 710 transitions, 12109 flow. Second operand 11 states and 184 transitions. [2024-06-28 01:26:53,372 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 473 places, 754 transitions, 13939 flow [2024-06-28 01:26:55,104 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 465 places, 754 transitions, 13357 flow, removed 5 selfloop flow, removed 8 redundant places. [2024-06-28 01:26:55,113 INFO L231 Difference]: Finished difference. Result has 467 places, 718 transitions, 12408 flow [2024-06-28 01:26:55,114 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=11539, PETRI_DIFFERENCE_MINUEND_PLACES=455, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=710, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=310, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=398, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=12408, PETRI_PLACES=467, PETRI_TRANSITIONS=718} [2024-06-28 01:26:55,114 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 425 predicate places. [2024-06-28 01:26:55,114 INFO L495 AbstractCegarLoop]: Abstraction has has 467 places, 718 transitions, 12408 flow [2024-06-28 01:26:55,114 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 10.23076923076923) internal successors, (133), 13 states have internal predecessors, (133), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:26:55,114 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:26:55,114 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 01:26:55,114 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable141 [2024-06-28 01:26:55,115 INFO L420 AbstractCegarLoop]: === Iteration 143 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:26:55,115 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:26:55,115 INFO L85 PathProgramCache]: Analyzing trace with hash 1748163448, now seen corresponding path program 8 times [2024-06-28 01:26:55,115 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:26:55,115 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1722999460] [2024-06-28 01:26:55,115 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:26:55,115 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:26:55,123 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:26:56,102 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 01:26:56,102 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:26:56,102 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1722999460] [2024-06-28 01:26:56,102 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1722999460] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:26:56,102 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:26:56,102 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-28 01:26:56,103 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [374019494] [2024-06-28 01:26:56,103 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:26:56,103 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-28 01:26:56,103 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:26:56,103 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-28 01:26:56,103 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=122, Unknown=0, NotChecked=0, Total=156 [2024-06-28 01:26:56,214 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 38 [2024-06-28 01:26:56,214 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 467 places, 718 transitions, 12408 flow. Second operand has 13 states, 13 states have (on average 10.23076923076923) internal successors, (133), 13 states have internal predecessors, (133), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:26:56,214 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:26:56,214 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 38 [2024-06-28 01:26:56,214 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:26:58,085 INFO L124 PetriNetUnfolderBase]: 3465/6495 cut-off events. [2024-06-28 01:26:58,085 INFO L125 PetriNetUnfolderBase]: For 303851/303851 co-relation queries the response was YES. [2024-06-28 01:26:58,152 INFO L83 FinitePrefix]: Finished finitePrefix Result has 42594 conditions, 6495 events. 3465/6495 cut-off events. For 303851/303851 co-relation queries the response was YES. Maximal size of possible extension queue 398. Compared 47797 event pairs, 660 based on Foata normal form. 2/6061 useless extension candidates. Maximal degree in co-relation 42381. Up to 4703 conditions per place. [2024-06-28 01:26:58,173 INFO L140 encePairwiseOnDemand]: 27/38 looper letters, 437 selfloop transitions, 313 changer transitions 0/758 dead transitions. [2024-06-28 01:26:58,173 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 477 places, 758 transitions, 14127 flow [2024-06-28 01:26:58,174 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 01:26:58,174 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 01:26:58,174 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 187 transitions. [2024-06-28 01:26:58,174 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4473684210526316 [2024-06-28 01:26:58,174 INFO L175 Difference]: Start difference. First operand has 467 places, 718 transitions, 12408 flow. Second operand 11 states and 187 transitions. [2024-06-28 01:26:58,174 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 477 places, 758 transitions, 14127 flow [2024-06-28 01:27:00,491 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 469 places, 758 transitions, 13682 flow, removed 16 selfloop flow, removed 8 redundant places. [2024-06-28 01:27:00,500 INFO L231 Difference]: Finished difference. Result has 470 places, 719 transitions, 12611 flow [2024-06-28 01:27:00,500 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=11963, PETRI_DIFFERENCE_MINUEND_PLACES=459, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=718, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=312, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=405, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=12611, PETRI_PLACES=470, PETRI_TRANSITIONS=719} [2024-06-28 01:27:00,501 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 428 predicate places. [2024-06-28 01:27:00,501 INFO L495 AbstractCegarLoop]: Abstraction has has 470 places, 719 transitions, 12611 flow [2024-06-28 01:27:00,501 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 10.23076923076923) internal successors, (133), 13 states have internal predecessors, (133), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:27:00,501 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:27:00,501 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 01:27:00,501 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable142 [2024-06-28 01:27:00,501 INFO L420 AbstractCegarLoop]: === Iteration 144 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:27:00,501 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:27:00,501 INFO L85 PathProgramCache]: Analyzing trace with hash 1748480578, now seen corresponding path program 9 times [2024-06-28 01:27:00,501 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:27:00,501 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [765513472] [2024-06-28 01:27:00,501 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:27:00,502 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:27:00,509 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:27:01,482 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 01:27:01,482 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:27:01,482 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [765513472] [2024-06-28 01:27:01,482 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [765513472] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:27:01,482 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:27:01,482 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-28 01:27:01,483 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1619982203] [2024-06-28 01:27:01,483 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:27:01,483 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-28 01:27:01,483 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:27:01,483 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-28 01:27:01,483 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=121, Unknown=0, NotChecked=0, Total=156 [2024-06-28 01:27:01,574 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 38 [2024-06-28 01:27:01,574 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 470 places, 719 transitions, 12611 flow. Second operand has 13 states, 13 states have (on average 10.23076923076923) internal successors, (133), 13 states have internal predecessors, (133), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:27:01,574 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:27:01,574 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 38 [2024-06-28 01:27:01,574 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:27:03,336 INFO L124 PetriNetUnfolderBase]: 3502/6566 cut-off events. [2024-06-28 01:27:03,337 INFO L125 PetriNetUnfolderBase]: For 331521/331521 co-relation queries the response was YES. [2024-06-28 01:27:03,404 INFO L83 FinitePrefix]: Finished finitePrefix Result has 43329 conditions, 6566 events. 3502/6566 cut-off events. For 331521/331521 co-relation queries the response was YES. Maximal size of possible extension queue 401. Compared 48488 event pairs, 658 based on Foata normal form. 2/6129 useless extension candidates. Maximal degree in co-relation 43117. Up to 4286 conditions per place. [2024-06-28 01:27:03,426 INFO L140 encePairwiseOnDemand]: 27/38 looper letters, 437 selfloop transitions, 319 changer transitions 0/764 dead transitions. [2024-06-28 01:27:03,426 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 480 places, 764 transitions, 14662 flow [2024-06-28 01:27:03,426 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 01:27:03,426 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 01:27:03,426 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 190 transitions. [2024-06-28 01:27:03,427 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45454545454545453 [2024-06-28 01:27:03,427 INFO L175 Difference]: Start difference. First operand has 470 places, 719 transitions, 12611 flow. Second operand 11 states and 190 transitions. [2024-06-28 01:27:03,427 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 480 places, 764 transitions, 14662 flow [2024-06-28 01:27:05,507 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 471 places, 764 transitions, 14024 flow, removed 7 selfloop flow, removed 9 redundant places. [2024-06-28 01:27:05,516 INFO L231 Difference]: Finished difference. Result has 472 places, 721 transitions, 12653 flow [2024-06-28 01:27:05,516 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=11973, PETRI_DIFFERENCE_MINUEND_PLACES=461, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=719, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=318, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=401, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=12653, PETRI_PLACES=472, PETRI_TRANSITIONS=721} [2024-06-28 01:27:05,517 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 430 predicate places. [2024-06-28 01:27:05,517 INFO L495 AbstractCegarLoop]: Abstraction has has 472 places, 721 transitions, 12653 flow [2024-06-28 01:27:05,517 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 10.23076923076923) internal successors, (133), 13 states have internal predecessors, (133), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:27:05,517 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:27:05,517 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 01:27:05,517 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable143 [2024-06-28 01:27:05,517 INFO L420 AbstractCegarLoop]: === Iteration 145 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:27:05,518 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:27:05,518 INFO L85 PathProgramCache]: Analyzing trace with hash -1287726812, now seen corresponding path program 11 times [2024-06-28 01:27:05,518 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:27:05,518 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [791550937] [2024-06-28 01:27:05,518 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:27:05,518 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:27:05,532 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:27:06,520 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 01:27:06,521 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:27:06,521 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [791550937] [2024-06-28 01:27:06,521 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [791550937] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:27:06,521 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:27:06,521 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-28 01:27:06,521 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [389582661] [2024-06-28 01:27:06,521 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:27:06,521 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-28 01:27:06,521 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:27:06,521 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-28 01:27:06,521 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=115, Unknown=0, NotChecked=0, Total=156 [2024-06-28 01:27:06,659 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 38 [2024-06-28 01:27:06,659 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 472 places, 721 transitions, 12653 flow. Second operand has 13 states, 13 states have (on average 10.23076923076923) internal successors, (133), 13 states have internal predecessors, (133), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:27:06,659 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:27:06,659 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 38 [2024-06-28 01:27:06,659 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:27:08,723 INFO L124 PetriNetUnfolderBase]: 3537/6636 cut-off events. [2024-06-28 01:27:08,723 INFO L125 PetriNetUnfolderBase]: For 341017/341017 co-relation queries the response was YES. [2024-06-28 01:27:08,780 INFO L83 FinitePrefix]: Finished finitePrefix Result has 44077 conditions, 6636 events. 3537/6636 cut-off events. For 341017/341017 co-relation queries the response was YES. Maximal size of possible extension queue 407. Compared 49097 event pairs, 651 based on Foata normal form. 2/6190 useless extension candidates. Maximal degree in co-relation 43864. Up to 4076 conditions per place. [2024-06-28 01:27:08,798 INFO L140 encePairwiseOnDemand]: 25/38 looper letters, 497 selfloop transitions, 266 changer transitions 0/771 dead transitions. [2024-06-28 01:27:08,799 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 484 places, 771 transitions, 14593 flow [2024-06-28 01:27:08,799 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-06-28 01:27:08,799 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2024-06-28 01:27:08,799 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 220 transitions. [2024-06-28 01:27:08,799 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44534412955465585 [2024-06-28 01:27:08,799 INFO L175 Difference]: Start difference. First operand has 472 places, 721 transitions, 12653 flow. Second operand 13 states and 220 transitions. [2024-06-28 01:27:08,799 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 484 places, 771 transitions, 14593 flow [2024-06-28 01:27:10,880 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 477 places, 771 transitions, 14205 flow, removed 10 selfloop flow, removed 7 redundant places. [2024-06-28 01:27:10,889 INFO L231 Difference]: Finished difference. Result has 479 places, 728 transitions, 13023 flow [2024-06-28 01:27:10,890 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=12265, PETRI_DIFFERENCE_MINUEND_PLACES=465, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=721, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=259, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=459, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=13023, PETRI_PLACES=479, PETRI_TRANSITIONS=728} [2024-06-28 01:27:10,890 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 437 predicate places. [2024-06-28 01:27:10,890 INFO L495 AbstractCegarLoop]: Abstraction has has 479 places, 728 transitions, 13023 flow [2024-06-28 01:27:10,890 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 10.23076923076923) internal successors, (133), 13 states have internal predecessors, (133), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:27:10,890 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:27:10,890 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 01:27:10,890 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable144 [2024-06-28 01:27:10,890 INFO L420 AbstractCegarLoop]: === Iteration 146 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:27:10,891 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:27:10,891 INFO L85 PathProgramCache]: Analyzing trace with hash -176956311, now seen corresponding path program 11 times [2024-06-28 01:27:10,891 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:27:10,891 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1626086073] [2024-06-28 01:27:10,891 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:27:10,891 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:27:10,896 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:27:11,965 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 01:27:11,965 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:27:11,965 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1626086073] [2024-06-28 01:27:11,965 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1626086073] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:27:11,965 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:27:11,965 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-28 01:27:11,965 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [710252006] [2024-06-28 01:27:11,965 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:27:11,965 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-28 01:27:11,966 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:27:11,966 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-28 01:27:11,966 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=120, Unknown=0, NotChecked=0, Total=156 [2024-06-28 01:27:12,105 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 38 [2024-06-28 01:27:12,106 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 479 places, 728 transitions, 13023 flow. Second operand has 13 states, 13 states have (on average 10.23076923076923) internal successors, (133), 13 states have internal predecessors, (133), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:27:12,106 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:27:12,106 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 38 [2024-06-28 01:27:12,106 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:27:14,267 INFO L124 PetriNetUnfolderBase]: 3574/6719 cut-off events. [2024-06-28 01:27:14,267 INFO L125 PetriNetUnfolderBase]: For 372170/372170 co-relation queries the response was YES. [2024-06-28 01:27:14,341 INFO L83 FinitePrefix]: Finished finitePrefix Result has 45863 conditions, 6719 events. 3574/6719 cut-off events. For 372170/372170 co-relation queries the response was YES. Maximal size of possible extension queue 410. Compared 49956 event pairs, 785 based on Foata normal form. 2/6269 useless extension candidates. Maximal degree in co-relation 45647. Up to 5241 conditions per place. [2024-06-28 01:27:14,366 INFO L140 encePairwiseOnDemand]: 26/38 looper letters, 591 selfloop transitions, 171 changer transitions 0/770 dead transitions. [2024-06-28 01:27:14,366 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 490 places, 770 transitions, 15148 flow [2024-06-28 01:27:14,367 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-28 01:27:14,367 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-28 01:27:14,367 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 199 transitions. [2024-06-28 01:27:14,367 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.43640350877192985 [2024-06-28 01:27:14,367 INFO L175 Difference]: Start difference. First operand has 479 places, 728 transitions, 13023 flow. Second operand 12 states and 199 transitions. [2024-06-28 01:27:14,367 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 490 places, 770 transitions, 15148 flow [2024-06-28 01:27:17,085 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 480 places, 770 transitions, 14509 flow, removed 55 selfloop flow, removed 10 redundant places. [2024-06-28 01:27:17,095 INFO L231 Difference]: Finished difference. Result has 482 places, 732 transitions, 12869 flow [2024-06-28 01:27:17,095 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=12386, PETRI_DIFFERENCE_MINUEND_PLACES=469, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=728, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=168, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=558, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=12869, PETRI_PLACES=482, PETRI_TRANSITIONS=732} [2024-06-28 01:27:17,095 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 440 predicate places. [2024-06-28 01:27:17,095 INFO L495 AbstractCegarLoop]: Abstraction has has 482 places, 732 transitions, 12869 flow [2024-06-28 01:27:17,096 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 10.23076923076923) internal successors, (133), 13 states have internal predecessors, (133), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:27:17,096 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:27:17,096 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 01:27:17,096 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable145 [2024-06-28 01:27:17,096 INFO L420 AbstractCegarLoop]: === Iteration 147 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:27:17,096 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:27:17,096 INFO L85 PathProgramCache]: Analyzing trace with hash -171446061, now seen corresponding path program 12 times [2024-06-28 01:27:17,097 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:27:17,097 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [950703516] [2024-06-28 01:27:17,097 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:27:17,097 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:27:17,103 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:27:18,034 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 01:27:18,034 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:27:18,034 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [950703516] [2024-06-28 01:27:18,034 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [950703516] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:27:18,034 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:27:18,034 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-28 01:27:18,034 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1921834554] [2024-06-28 01:27:18,034 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:27:18,035 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-28 01:27:18,035 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:27:18,035 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-28 01:27:18,035 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=116, Unknown=0, NotChecked=0, Total=156 [2024-06-28 01:27:18,168 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 38 [2024-06-28 01:27:18,168 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 482 places, 732 transitions, 12869 flow. Second operand has 13 states, 13 states have (on average 10.23076923076923) internal successors, (133), 13 states have internal predecessors, (133), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:27:18,168 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:27:18,168 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 38 [2024-06-28 01:27:18,168 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:27:20,160 INFO L124 PetriNetUnfolderBase]: 3591/6761 cut-off events. [2024-06-28 01:27:20,161 INFO L125 PetriNetUnfolderBase]: For 372240/372240 co-relation queries the response was YES. [2024-06-28 01:27:20,233 INFO L83 FinitePrefix]: Finished finitePrefix Result has 45637 conditions, 6761 events. 3591/6761 cut-off events. For 372240/372240 co-relation queries the response was YES. Maximal size of possible extension queue 412. Compared 50431 event pairs, 801 based on Foata normal form. 2/6307 useless extension candidates. Maximal degree in co-relation 45419. Up to 5380 conditions per place. [2024-06-28 01:27:20,255 INFO L140 encePairwiseOnDemand]: 26/38 looper letters, 614 selfloop transitions, 147 changer transitions 0/769 dead transitions. [2024-06-28 01:27:20,256 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 493 places, 769 transitions, 14642 flow [2024-06-28 01:27:20,256 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-28 01:27:20,256 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-28 01:27:20,256 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 194 transitions. [2024-06-28 01:27:20,256 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.42543859649122806 [2024-06-28 01:27:20,256 INFO L175 Difference]: Start difference. First operand has 482 places, 732 transitions, 12869 flow. Second operand 12 states and 194 transitions. [2024-06-28 01:27:20,257 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 493 places, 769 transitions, 14642 flow [2024-06-28 01:27:22,863 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 485 places, 769 transitions, 14297 flow, removed 33 selfloop flow, removed 8 redundant places. [2024-06-28 01:27:22,872 INFO L231 Difference]: Finished difference. Result has 486 places, 733 transitions, 12870 flow [2024-06-28 01:27:22,873 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=12538, PETRI_DIFFERENCE_MINUEND_PLACES=474, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=732, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=146, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=585, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=12870, PETRI_PLACES=486, PETRI_TRANSITIONS=733} [2024-06-28 01:27:22,873 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 444 predicate places. [2024-06-28 01:27:22,873 INFO L495 AbstractCegarLoop]: Abstraction has has 486 places, 733 transitions, 12870 flow [2024-06-28 01:27:22,873 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 10.23076923076923) internal successors, (133), 13 states have internal predecessors, (133), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:27:22,873 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:27:22,873 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 01:27:22,873 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable146 [2024-06-28 01:27:22,873 INFO L420 AbstractCegarLoop]: === Iteration 148 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:27:22,874 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:27:22,874 INFO L85 PathProgramCache]: Analyzing trace with hash -970587180, now seen corresponding path program 12 times [2024-06-28 01:27:22,874 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:27:22,874 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [137008958] [2024-06-28 01:27:22,874 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:27:22,874 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:27:22,881 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:27:23,930 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 01:27:23,930 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:27:23,930 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [137008958] [2024-06-28 01:27:23,931 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [137008958] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:27:23,931 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:27:23,931 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-28 01:27:23,931 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1978093874] [2024-06-28 01:27:23,931 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:27:23,931 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-28 01:27:23,931 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:27:23,931 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-28 01:27:23,931 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=121, Unknown=0, NotChecked=0, Total=156 [2024-06-28 01:27:24,088 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 38 [2024-06-28 01:27:24,088 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 486 places, 733 transitions, 12870 flow. Second operand has 13 states, 13 states have (on average 10.23076923076923) internal successors, (133), 13 states have internal predecessors, (133), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:27:24,088 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:27:24,088 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 38 [2024-06-28 01:27:24,088 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:27:26,251 INFO L124 PetriNetUnfolderBase]: 3626/6813 cut-off events. [2024-06-28 01:27:26,251 INFO L125 PetriNetUnfolderBase]: For 370777/370777 co-relation queries the response was YES. [2024-06-28 01:27:26,329 INFO L83 FinitePrefix]: Finished finitePrefix Result has 45985 conditions, 6813 events. 3626/6813 cut-off events. For 370777/370777 co-relation queries the response was YES. Maximal size of possible extension queue 418. Compared 50747 event pairs, 683 based on Foata normal form. 2/6353 useless extension candidates. Maximal degree in co-relation 45766. Up to 4189 conditions per place. [2024-06-28 01:27:26,354 INFO L140 encePairwiseOnDemand]: 24/38 looper letters, 462 selfloop transitions, 304 changer transitions 0/774 dead transitions. [2024-06-28 01:27:26,354 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 497 places, 774 transitions, 14698 flow [2024-06-28 01:27:26,355 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-28 01:27:26,355 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-28 01:27:26,355 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 200 transitions. [2024-06-28 01:27:26,355 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.43859649122807015 [2024-06-28 01:27:26,355 INFO L175 Difference]: Start difference. First operand has 486 places, 733 transitions, 12870 flow. Second operand 12 states and 200 transitions. [2024-06-28 01:27:26,355 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 497 places, 774 transitions, 14698 flow [2024-06-28 01:27:29,304 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 488 places, 774 transitions, 14373 flow, removed 12 selfloop flow, removed 9 redundant places. [2024-06-28 01:27:29,314 INFO L231 Difference]: Finished difference. Result has 489 places, 739 transitions, 13291 flow [2024-06-28 01:27:29,314 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=12545, PETRI_DIFFERENCE_MINUEND_PLACES=477, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=733, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=298, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=433, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=13291, PETRI_PLACES=489, PETRI_TRANSITIONS=739} [2024-06-28 01:27:29,314 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 447 predicate places. [2024-06-28 01:27:29,315 INFO L495 AbstractCegarLoop]: Abstraction has has 489 places, 739 transitions, 13291 flow [2024-06-28 01:27:29,315 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 10.23076923076923) internal successors, (133), 13 states have internal predecessors, (133), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:27:29,315 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:27:29,315 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 01:27:29,315 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable147 [2024-06-28 01:27:29,315 INFO L420 AbstractCegarLoop]: === Iteration 149 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:27:29,315 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:27:29,315 INFO L85 PathProgramCache]: Analyzing trace with hash 1482456868, now seen corresponding path program 10 times [2024-06-28 01:27:29,315 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:27:29,315 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1791932041] [2024-06-28 01:27:29,315 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:27:29,315 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:27:29,324 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:27:30,435 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 01:27:30,435 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:27:30,435 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1791932041] [2024-06-28 01:27:30,435 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1791932041] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:27:30,435 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:27:30,435 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-28 01:27:30,436 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1919358201] [2024-06-28 01:27:30,436 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:27:30,436 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-28 01:27:30,436 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:27:30,436 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-28 01:27:30,436 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=120, Unknown=0, NotChecked=0, Total=156 [2024-06-28 01:27:30,549 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 38 [2024-06-28 01:27:30,550 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 489 places, 739 transitions, 13291 flow. Second operand has 13 states, 13 states have (on average 10.23076923076923) internal successors, (133), 13 states have internal predecessors, (133), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:27:30,550 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:27:30,550 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 38 [2024-06-28 01:27:30,550 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:27:32,588 INFO L124 PetriNetUnfolderBase]: 3674/6899 cut-off events. [2024-06-28 01:27:32,588 INFO L125 PetriNetUnfolderBase]: For 379152/379152 co-relation queries the response was YES. [2024-06-28 01:27:32,667 INFO L83 FinitePrefix]: Finished finitePrefix Result has 47221 conditions, 6899 events. 3674/6899 cut-off events. For 379152/379152 co-relation queries the response was YES. Maximal size of possible extension queue 425. Compared 51500 event pairs, 693 based on Foata normal form. 2/6432 useless extension candidates. Maximal degree in co-relation 47002. Up to 5091 conditions per place. [2024-06-28 01:27:32,692 INFO L140 encePairwiseOnDemand]: 27/38 looper letters, 479 selfloop transitions, 304 changer transitions 0/791 dead transitions. [2024-06-28 01:27:32,692 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 499 places, 791 transitions, 15333 flow [2024-06-28 01:27:32,693 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 01:27:32,693 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 01:27:32,693 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 185 transitions. [2024-06-28 01:27:32,693 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44258373205741625 [2024-06-28 01:27:32,693 INFO L175 Difference]: Start difference. First operand has 489 places, 739 transitions, 13291 flow. Second operand 11 states and 185 transitions. [2024-06-28 01:27:32,693 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 499 places, 791 transitions, 15333 flow [2024-06-28 01:27:35,126 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 492 places, 791 transitions, 14905 flow, removed 32 selfloop flow, removed 7 redundant places. [2024-06-28 01:27:35,136 INFO L231 Difference]: Finished difference. Result has 493 places, 750 transitions, 13730 flow [2024-06-28 01:27:35,136 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=12868, PETRI_DIFFERENCE_MINUEND_PLACES=482, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=739, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=293, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=445, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=13730, PETRI_PLACES=493, PETRI_TRANSITIONS=750} [2024-06-28 01:27:35,136 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 451 predicate places. [2024-06-28 01:27:35,137 INFO L495 AbstractCegarLoop]: Abstraction has has 493 places, 750 transitions, 13730 flow [2024-06-28 01:27:35,137 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 10.23076923076923) internal successors, (133), 13 states have internal predecessors, (133), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:27:35,137 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:27:35,137 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:27:35,137 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable148 [2024-06-28 01:27:35,137 INFO L420 AbstractCegarLoop]: === Iteration 150 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:27:35,138 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:27:35,138 INFO L85 PathProgramCache]: Analyzing trace with hash 1482448932, now seen corresponding path program 13 times [2024-06-28 01:27:35,138 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:27:35,138 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [587258666] [2024-06-28 01:27:35,138 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:27:35,138 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:27:35,147 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:27:36,194 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 01:27:36,194 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:27:36,194 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [587258666] [2024-06-28 01:27:36,194 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [587258666] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:27:36,194 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:27:36,194 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-28 01:27:36,194 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2030638760] [2024-06-28 01:27:36,194 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:27:36,194 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-28 01:27:36,194 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:27:36,195 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-28 01:27:36,195 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=120, Unknown=0, NotChecked=0, Total=156 [2024-06-28 01:27:36,341 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 38 [2024-06-28 01:27:36,341 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 493 places, 750 transitions, 13730 flow. Second operand has 13 states, 13 states have (on average 10.23076923076923) internal successors, (133), 13 states have internal predecessors, (133), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:27:36,342 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:27:36,342 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 38 [2024-06-28 01:27:36,342 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:27:38,613 INFO L124 PetriNetUnfolderBase]: 3731/6987 cut-off events. [2024-06-28 01:27:38,613 INFO L125 PetriNetUnfolderBase]: For 386796/386796 co-relation queries the response was YES. [2024-06-28 01:27:38,682 INFO L83 FinitePrefix]: Finished finitePrefix Result has 47744 conditions, 6987 events. 3731/6987 cut-off events. For 386796/386796 co-relation queries the response was YES. Maximal size of possible extension queue 435. Compared 52074 event pairs, 676 based on Foata normal form. 2/6512 useless extension candidates. Maximal degree in co-relation 47524. Up to 4347 conditions per place. [2024-06-28 01:27:38,703 INFO L140 encePairwiseOnDemand]: 25/38 looper letters, 507 selfloop transitions, 285 changer transitions 0/800 dead transitions. [2024-06-28 01:27:38,703 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 504 places, 800 transitions, 15720 flow [2024-06-28 01:27:38,703 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-28 01:27:38,704 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-28 01:27:38,704 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 202 transitions. [2024-06-28 01:27:38,704 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44298245614035087 [2024-06-28 01:27:38,704 INFO L175 Difference]: Start difference. First operand has 493 places, 750 transitions, 13730 flow. Second operand 12 states and 202 transitions. [2024-06-28 01:27:38,704 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 504 places, 800 transitions, 15720 flow [2024-06-28 01:27:41,010 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 496 places, 800 transitions, 15110 flow, removed 7 selfloop flow, removed 8 redundant places. [2024-06-28 01:27:41,019 INFO L231 Difference]: Finished difference. Result has 497 places, 760 transitions, 13898 flow [2024-06-28 01:27:41,020 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=13120, PETRI_DIFFERENCE_MINUEND_PLACES=485, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=750, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=275, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=473, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=13898, PETRI_PLACES=497, PETRI_TRANSITIONS=760} [2024-06-28 01:27:41,020 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 455 predicate places. [2024-06-28 01:27:41,020 INFO L495 AbstractCegarLoop]: Abstraction has has 497 places, 760 transitions, 13898 flow [2024-06-28 01:27:41,020 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 10.23076923076923) internal successors, (133), 13 states have internal predecessors, (133), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:27:41,020 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:27:41,020 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 01:27:41,020 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable149 [2024-06-28 01:27:41,021 INFO L420 AbstractCegarLoop]: === Iteration 151 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:27:41,021 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:27:41,021 INFO L85 PathProgramCache]: Analyzing trace with hash -1293089192, now seen corresponding path program 14 times [2024-06-28 01:27:41,021 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:27:41,021 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1102389857] [2024-06-28 01:27:41,021 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:27:41,021 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:27:41,029 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:27:41,922 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 01:27:41,922 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:27:41,922 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1102389857] [2024-06-28 01:27:41,922 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1102389857] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:27:41,922 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:27:41,923 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-28 01:27:41,923 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2129197169] [2024-06-28 01:27:41,923 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:27:41,923 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-28 01:27:41,923 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:27:41,923 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-28 01:27:41,923 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=116, Unknown=0, NotChecked=0, Total=156 [2024-06-28 01:27:42,058 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 38 [2024-06-28 01:27:42,059 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 497 places, 760 transitions, 13898 flow. Second operand has 13 states, 13 states have (on average 10.23076923076923) internal successors, (133), 13 states have internal predecessors, (133), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:27:42,059 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:27:42,059 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 38 [2024-06-28 01:27:42,059 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:27:44,167 INFO L124 PetriNetUnfolderBase]: 3744/7009 cut-off events. [2024-06-28 01:27:44,167 INFO L125 PetriNetUnfolderBase]: For 396960/396960 co-relation queries the response was YES. [2024-06-28 01:27:44,241 INFO L83 FinitePrefix]: Finished finitePrefix Result has 48292 conditions, 7009 events. 3744/7009 cut-off events. For 396960/396960 co-relation queries the response was YES. Maximal size of possible extension queue 438. Compared 52272 event pairs, 667 based on Foata normal form. 2/6531 useless extension candidates. Maximal degree in co-relation 48071. Up to 4269 conditions per place. [2024-06-28 01:27:44,264 INFO L140 encePairwiseOnDemand]: 25/38 looper letters, 465 selfloop transitions, 327 changer transitions 0/800 dead transitions. [2024-06-28 01:27:44,264 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 508 places, 800 transitions, 15788 flow [2024-06-28 01:27:44,265 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-28 01:27:44,265 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-28 01:27:44,265 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 207 transitions. [2024-06-28 01:27:44,265 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45394736842105265 [2024-06-28 01:27:44,265 INFO L175 Difference]: Start difference. First operand has 497 places, 760 transitions, 13898 flow. Second operand 12 states and 207 transitions. [2024-06-28 01:27:44,265 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 508 places, 800 transitions, 15788 flow [2024-06-28 01:27:47,150 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 501 places, 800 transitions, 15229 flow, removed 24 selfloop flow, removed 7 redundant places. [2024-06-28 01:27:47,160 INFO L231 Difference]: Finished difference. Result has 502 places, 762 transitions, 14122 flow [2024-06-28 01:27:47,160 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=13339, PETRI_DIFFERENCE_MINUEND_PLACES=490, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=760, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=325, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=433, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=14122, PETRI_PLACES=502, PETRI_TRANSITIONS=762} [2024-06-28 01:27:47,160 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 460 predicate places. [2024-06-28 01:27:47,160 INFO L495 AbstractCegarLoop]: Abstraction has has 502 places, 762 transitions, 14122 flow [2024-06-28 01:27:47,160 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 10.23076923076923) internal successors, (133), 13 states have internal predecessors, (133), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:27:47,160 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:27:47,160 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 01:27:47,161 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable150 [2024-06-28 01:27:47,161 INFO L420 AbstractCegarLoop]: === Iteration 152 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:27:47,161 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:27:47,161 INFO L85 PathProgramCache]: Analyzing trace with hash -1293233342, now seen corresponding path program 15 times [2024-06-28 01:27:47,161 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:27:47,161 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2083456500] [2024-06-28 01:27:47,161 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:27:47,161 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:27:47,168 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:27:48,085 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 01:27:48,085 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:27:48,085 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2083456500] [2024-06-28 01:27:48,086 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2083456500] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:27:48,086 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:27:48,086 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-28 01:27:48,086 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [222938172] [2024-06-28 01:27:48,086 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:27:48,086 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-28 01:27:48,086 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:27:48,086 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-28 01:27:48,086 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=119, Unknown=0, NotChecked=0, Total=156 [2024-06-28 01:27:48,199 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 38 [2024-06-28 01:27:48,200 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 502 places, 762 transitions, 14122 flow. Second operand has 13 states, 13 states have (on average 10.23076923076923) internal successors, (133), 13 states have internal predecessors, (133), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:27:48,200 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:27:48,200 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 38 [2024-06-28 01:27:48,200 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:27:50,436 INFO L124 PetriNetUnfolderBase]: 3774/7053 cut-off events. [2024-06-28 01:27:50,436 INFO L125 PetriNetUnfolderBase]: For 434335/434335 co-relation queries the response was YES. [2024-06-28 01:27:50,513 INFO L83 FinitePrefix]: Finished finitePrefix Result has 49607 conditions, 7053 events. 3774/7053 cut-off events. For 434335/434335 co-relation queries the response was YES. Maximal size of possible extension queue 441. Compared 52569 event pairs, 668 based on Foata normal form. 2/6569 useless extension candidates. Maximal degree in co-relation 49385. Up to 4204 conditions per place. [2024-06-28 01:27:50,536 INFO L140 encePairwiseOnDemand]: 25/38 looper letters, 465 selfloop transitions, 337 changer transitions 0/810 dead transitions. [2024-06-28 01:27:50,537 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 515 places, 810 transitions, 16480 flow [2024-06-28 01:27:50,537 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2024-06-28 01:27:50,537 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2024-06-28 01:27:50,537 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 234 transitions. [2024-06-28 01:27:50,537 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4398496240601504 [2024-06-28 01:27:50,537 INFO L175 Difference]: Start difference. First operand has 502 places, 762 transitions, 14122 flow. Second operand 14 states and 234 transitions. [2024-06-28 01:27:50,537 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 515 places, 810 transitions, 16480 flow [2024-06-28 01:27:53,477 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 505 places, 810 transitions, 15721 flow, removed 54 selfloop flow, removed 10 redundant places. [2024-06-28 01:27:53,487 INFO L231 Difference]: Finished difference. Result has 506 places, 766 transitions, 14297 flow [2024-06-28 01:27:53,488 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=13363, PETRI_DIFFERENCE_MINUEND_PLACES=492, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=762, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=335, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=427, PETRI_DIFFERENCE_SUBTRAHEND_STATES=14, PETRI_FLOW=14297, PETRI_PLACES=506, PETRI_TRANSITIONS=766} [2024-06-28 01:27:53,488 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 464 predicate places. [2024-06-28 01:27:53,488 INFO L495 AbstractCegarLoop]: Abstraction has has 506 places, 766 transitions, 14297 flow [2024-06-28 01:27:53,488 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 10.23076923076923) internal successors, (133), 13 states have internal predecessors, (133), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:27:53,488 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:27:53,488 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 01:27:53,488 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable151 [2024-06-28 01:27:53,488 INFO L420 AbstractCegarLoop]: === Iteration 153 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:27:53,488 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:27:53,488 INFO L85 PathProgramCache]: Analyzing trace with hash -1293233497, now seen corresponding path program 13 times [2024-06-28 01:27:53,489 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:27:53,489 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1669643685] [2024-06-28 01:27:53,489 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:27:53,489 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:27:53,494 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:27:54,435 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 01:27:54,435 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:27:54,436 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1669643685] [2024-06-28 01:27:54,436 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1669643685] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:27:54,436 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:27:54,436 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-28 01:27:54,436 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [106168323] [2024-06-28 01:27:54,436 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:27:54,436 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-28 01:27:54,437 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:27:54,437 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-28 01:27:54,437 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=119, Unknown=0, NotChecked=0, Total=156 [2024-06-28 01:27:54,551 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 38 [2024-06-28 01:27:54,551 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 506 places, 766 transitions, 14297 flow. Second operand has 13 states, 13 states have (on average 10.23076923076923) internal successors, (133), 13 states have internal predecessors, (133), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:27:54,551 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:27:54,551 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 38 [2024-06-28 01:27:54,551 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:27:56,804 INFO L124 PetriNetUnfolderBase]: 3879/7317 cut-off events. [2024-06-28 01:27:56,804 INFO L125 PetriNetUnfolderBase]: For 571663/571663 co-relation queries the response was YES. [2024-06-28 01:27:56,895 INFO L83 FinitePrefix]: Finished finitePrefix Result has 50448 conditions, 7317 events. 3879/7317 cut-off events. For 571663/571663 co-relation queries the response was YES. Maximal size of possible extension queue 445. Compared 55218 event pairs, 707 based on Foata normal form. 14/6831 useless extension candidates. Maximal degree in co-relation 50225. Up to 4182 conditions per place. [2024-06-28 01:27:56,925 INFO L140 encePairwiseOnDemand]: 24/38 looper letters, 471 selfloop transitions, 338 changer transitions 0/817 dead transitions. [2024-06-28 01:27:56,925 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 518 places, 817 transitions, 16505 flow [2024-06-28 01:27:56,926 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-06-28 01:27:56,926 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2024-06-28 01:27:56,926 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 230 transitions. [2024-06-28 01:27:56,926 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.46558704453441296 [2024-06-28 01:27:56,926 INFO L175 Difference]: Start difference. First operand has 506 places, 766 transitions, 14297 flow. Second operand 13 states and 230 transitions. [2024-06-28 01:27:56,926 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 518 places, 817 transitions, 16505 flow [2024-06-28 01:28:00,298 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 507 places, 817 transitions, 15923 flow, removed 65 selfloop flow, removed 11 redundant places. [2024-06-28 01:28:00,308 INFO L231 Difference]: Finished difference. Result has 508 places, 767 transitions, 14436 flow [2024-06-28 01:28:00,309 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=13715, PETRI_DIFFERENCE_MINUEND_PLACES=495, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=766, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=337, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=428, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=14436, PETRI_PLACES=508, PETRI_TRANSITIONS=767} [2024-06-28 01:28:00,309 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 466 predicate places. [2024-06-28 01:28:00,309 INFO L495 AbstractCegarLoop]: Abstraction has has 508 places, 767 transitions, 14436 flow [2024-06-28 01:28:00,309 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 10.23076923076923) internal successors, (133), 13 states have internal predecessors, (133), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:28:00,309 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:28:00,309 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 01:28:00,309 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable152 [2024-06-28 01:28:00,309 INFO L420 AbstractCegarLoop]: === Iteration 154 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:28:00,310 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:28:00,310 INFO L85 PathProgramCache]: Analyzing trace with hash 22708830, now seen corresponding path program 11 times [2024-06-28 01:28:00,310 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:28:00,310 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1421226172] [2024-06-28 01:28:00,310 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:28:00,310 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:28:00,318 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:28:01,294 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 01:28:01,294 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:28:01,294 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1421226172] [2024-06-28 01:28:01,294 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1421226172] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:28:01,294 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:28:01,294 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-28 01:28:01,295 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1627354545] [2024-06-28 01:28:01,295 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:28:01,295 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-28 01:28:01,295 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:28:01,295 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-28 01:28:01,295 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=115, Unknown=0, NotChecked=0, Total=156 [2024-06-28 01:28:01,401 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 38 [2024-06-28 01:28:01,402 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 508 places, 767 transitions, 14436 flow. Second operand has 13 states, 13 states have (on average 10.23076923076923) internal successors, (133), 13 states have internal predecessors, (133), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:28:01,402 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:28:01,402 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 38 [2024-06-28 01:28:01,402 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:28:03,742 INFO L124 PetriNetUnfolderBase]: 3927/7389 cut-off events. [2024-06-28 01:28:03,742 INFO L125 PetriNetUnfolderBase]: For 438554/438554 co-relation queries the response was YES. [2024-06-28 01:28:03,816 INFO L83 FinitePrefix]: Finished finitePrefix Result has 51728 conditions, 7389 events. 3927/7389 cut-off events. For 438554/438554 co-relation queries the response was YES. Maximal size of possible extension queue 453. Compared 55935 event pairs, 776 based on Foata normal form. 2/6883 useless extension candidates. Maximal degree in co-relation 51503. Up to 5507 conditions per place. [2024-06-28 01:28:03,841 INFO L140 encePairwiseOnDemand]: 27/38 looper letters, 506 selfloop transitions, 305 changer transitions 0/819 dead transitions. [2024-06-28 01:28:03,841 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 518 places, 819 transitions, 16552 flow [2024-06-28 01:28:03,842 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 01:28:03,842 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 01:28:03,842 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 189 transitions. [2024-06-28 01:28:03,842 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45215311004784686 [2024-06-28 01:28:03,842 INFO L175 Difference]: Start difference. First operand has 508 places, 767 transitions, 14436 flow. Second operand 11 states and 189 transitions. [2024-06-28 01:28:03,842 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 518 places, 819 transitions, 16552 flow [2024-06-28 01:28:06,522 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 507 places, 819 transitions, 15839 flow, removed 12 selfloop flow, removed 11 redundant places. [2024-06-28 01:28:06,532 INFO L231 Difference]: Finished difference. Result has 508 places, 778 transitions, 14614 flow [2024-06-28 01:28:06,532 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=13743, PETRI_DIFFERENCE_MINUEND_PLACES=497, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=767, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=294, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=472, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=14614, PETRI_PLACES=508, PETRI_TRANSITIONS=778} [2024-06-28 01:28:06,532 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 466 predicate places. [2024-06-28 01:28:06,532 INFO L495 AbstractCegarLoop]: Abstraction has has 508 places, 778 transitions, 14614 flow [2024-06-28 01:28:06,532 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 10.23076923076923) internal successors, (133), 13 states have internal predecessors, (133), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:28:06,532 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:28:06,533 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 01:28:06,533 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable153 [2024-06-28 01:28:06,533 INFO L420 AbstractCegarLoop]: === Iteration 155 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:28:06,533 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:28:06,533 INFO L85 PathProgramCache]: Analyzing trace with hash -1688820212, now seen corresponding path program 12 times [2024-06-28 01:28:06,533 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:28:06,533 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [246690319] [2024-06-28 01:28:06,533 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:28:06,533 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:28:06,541 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:28:07,568 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 01:28:07,569 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:28:07,569 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [246690319] [2024-06-28 01:28:07,569 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [246690319] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:28:07,569 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:28:07,569 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-28 01:28:07,569 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [271435138] [2024-06-28 01:28:07,569 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:28:07,569 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-28 01:28:07,569 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:28:07,569 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-28 01:28:07,569 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=123, Unknown=0, NotChecked=0, Total=156 [2024-06-28 01:28:07,718 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 38 [2024-06-28 01:28:07,718 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 508 places, 778 transitions, 14614 flow. Second operand has 13 states, 13 states have (on average 10.23076923076923) internal successors, (133), 13 states have internal predecessors, (133), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:28:07,718 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:28:07,718 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 38 [2024-06-28 01:28:07,718 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:28:10,231 INFO L124 PetriNetUnfolderBase]: 3944/7428 cut-off events. [2024-06-28 01:28:10,231 INFO L125 PetriNetUnfolderBase]: For 441070/441070 co-relation queries the response was YES. [2024-06-28 01:28:10,320 INFO L83 FinitePrefix]: Finished finitePrefix Result has 51472 conditions, 7428 events. 3944/7428 cut-off events. For 441070/441070 co-relation queries the response was YES. Maximal size of possible extension queue 455. Compared 56306 event pairs, 758 based on Foata normal form. 2/6919 useless extension candidates. Maximal degree in co-relation 51246. Up to 5538 conditions per place. [2024-06-28 01:28:10,348 INFO L140 encePairwiseOnDemand]: 27/38 looper letters, 497 selfloop transitions, 313 changer transitions 0/818 dead transitions. [2024-06-28 01:28:10,348 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 518 places, 818 transitions, 16465 flow [2024-06-28 01:28:10,349 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 01:28:10,349 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 01:28:10,349 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 186 transitions. [2024-06-28 01:28:10,349 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4449760765550239 [2024-06-28 01:28:10,349 INFO L175 Difference]: Start difference. First operand has 508 places, 778 transitions, 14614 flow. Second operand 11 states and 186 transitions. [2024-06-28 01:28:10,349 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 518 places, 818 transitions, 16465 flow [2024-06-28 01:28:13,556 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 510 places, 818 transitions, 15851 flow, removed 8 selfloop flow, removed 8 redundant places. [2024-06-28 01:28:13,566 INFO L231 Difference]: Finished difference. Result has 511 places, 779 transitions, 14658 flow [2024-06-28 01:28:13,566 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=14000, PETRI_DIFFERENCE_MINUEND_PLACES=500, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=778, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=312, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=465, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=14658, PETRI_PLACES=511, PETRI_TRANSITIONS=779} [2024-06-28 01:28:13,567 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 469 predicate places. [2024-06-28 01:28:13,568 INFO L495 AbstractCegarLoop]: Abstraction has has 511 places, 779 transitions, 14658 flow [2024-06-28 01:28:13,568 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 10.23076923076923) internal successors, (133), 13 states have internal predecessors, (133), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:28:13,568 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:28:13,568 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 01:28:13,569 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable154 [2024-06-28 01:28:13,569 INFO L420 AbstractCegarLoop]: === Iteration 156 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:28:13,569 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:28:13,569 INFO L85 PathProgramCache]: Analyzing trace with hash 30118140, now seen corresponding path program 13 times [2024-06-28 01:28:13,569 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:28:13,569 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [951595302] [2024-06-28 01:28:13,569 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:28:13,570 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:28:13,578 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:28:14,671 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 01:28:14,672 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:28:14,672 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [951595302] [2024-06-28 01:28:14,672 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [951595302] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:28:14,672 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:28:14,672 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-28 01:28:14,672 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1022377180] [2024-06-28 01:28:14,672 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:28:14,672 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-28 01:28:14,673 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:28:14,673 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-28 01:28:14,673 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=123, Unknown=0, NotChecked=0, Total=156 [2024-06-28 01:28:14,800 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 38 [2024-06-28 01:28:14,800 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 511 places, 779 transitions, 14658 flow. Second operand has 13 states, 13 states have (on average 10.23076923076923) internal successors, (133), 13 states have internal predecessors, (133), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:28:14,800 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:28:14,800 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 38 [2024-06-28 01:28:14,800 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:28:17,113 INFO L124 PetriNetUnfolderBase]: 3961/7468 cut-off events. [2024-06-28 01:28:17,113 INFO L125 PetriNetUnfolderBase]: For 446764/446764 co-relation queries the response was YES. [2024-06-28 01:28:17,198 INFO L83 FinitePrefix]: Finished finitePrefix Result has 51728 conditions, 7468 events. 3961/7468 cut-off events. For 446764/446764 co-relation queries the response was YES. Maximal size of possible extension queue 457. Compared 56753 event pairs, 786 based on Foata normal form. 2/6957 useless extension candidates. Maximal degree in co-relation 51501. Up to 5569 conditions per place. [2024-06-28 01:28:17,224 INFO L140 encePairwiseOnDemand]: 27/38 looper letters, 500 selfloop transitions, 309 changer transitions 0/817 dead transitions. [2024-06-28 01:28:17,224 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 521 places, 817 transitions, 16495 flow [2024-06-28 01:28:17,225 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 01:28:17,225 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 01:28:17,225 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 187 transitions. [2024-06-28 01:28:17,225 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4473684210526316 [2024-06-28 01:28:17,226 INFO L175 Difference]: Start difference. First operand has 511 places, 779 transitions, 14658 flow. Second operand 11 states and 187 transitions. [2024-06-28 01:28:17,226 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 521 places, 817 transitions, 16495 flow [2024-06-28 01:28:20,265 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 512 places, 817 transitions, 15839 flow, removed 9 selfloop flow, removed 9 redundant places. [2024-06-28 01:28:20,276 INFO L231 Difference]: Finished difference. Result has 513 places, 780 transitions, 14654 flow [2024-06-28 01:28:20,276 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=14002, PETRI_DIFFERENCE_MINUEND_PLACES=502, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=779, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=308, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=470, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=14654, PETRI_PLACES=513, PETRI_TRANSITIONS=780} [2024-06-28 01:28:20,276 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 471 predicate places. [2024-06-28 01:28:20,276 INFO L495 AbstractCegarLoop]: Abstraction has has 513 places, 780 transitions, 14654 flow [2024-06-28 01:28:20,277 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 10.23076923076923) internal successors, (133), 13 states have internal predecessors, (133), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:28:20,277 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:28:20,277 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 01:28:20,277 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable155 [2024-06-28 01:28:20,277 INFO L420 AbstractCegarLoop]: === Iteration 157 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:28:20,277 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:28:20,277 INFO L85 PathProgramCache]: Analyzing trace with hash -1086153466, now seen corresponding path program 14 times [2024-06-28 01:28:20,278 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:28:20,278 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [165247850] [2024-06-28 01:28:20,278 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:28:20,278 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:28:20,286 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:28:21,301 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 01:28:21,301 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:28:21,301 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [165247850] [2024-06-28 01:28:21,301 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [165247850] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:28:21,301 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:28:21,301 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-28 01:28:21,302 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1941424275] [2024-06-28 01:28:21,302 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:28:21,302 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-28 01:28:21,302 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:28:21,302 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-28 01:28:21,302 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=119, Unknown=0, NotChecked=0, Total=156 [2024-06-28 01:28:21,426 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 38 [2024-06-28 01:28:21,426 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 513 places, 780 transitions, 14654 flow. Second operand has 13 states, 13 states have (on average 10.23076923076923) internal successors, (133), 13 states have internal predecessors, (133), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:28:21,426 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:28:21,426 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 38 [2024-06-28 01:28:21,426 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:28:23,589 INFO L124 PetriNetUnfolderBase]: 3978/7505 cut-off events. [2024-06-28 01:28:23,589 INFO L125 PetriNetUnfolderBase]: For 451736/451736 co-relation queries the response was YES. [2024-06-28 01:28:23,686 INFO L83 FinitePrefix]: Finished finitePrefix Result has 51873 conditions, 7505 events. 3978/7505 cut-off events. For 451736/451736 co-relation queries the response was YES. Maximal size of possible extension queue 459. Compared 57172 event pairs, 805 based on Foata normal form. 2/6995 useless extension candidates. Maximal degree in co-relation 51645. Up to 5476 conditions per place. [2024-06-28 01:28:23,716 INFO L140 encePairwiseOnDemand]: 27/38 looper letters, 502 selfloop transitions, 311 changer transitions 0/821 dead transitions. [2024-06-28 01:28:23,717 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 523 places, 821 transitions, 16517 flow [2024-06-28 01:28:23,717 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 01:28:23,717 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 01:28:23,717 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 190 transitions. [2024-06-28 01:28:23,717 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45454545454545453 [2024-06-28 01:28:23,717 INFO L175 Difference]: Start difference. First operand has 513 places, 780 transitions, 14654 flow. Second operand 11 states and 190 transitions. [2024-06-28 01:28:23,718 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 523 places, 821 transitions, 16517 flow [2024-06-28 01:28:26,992 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 513 places, 821 transitions, 15708 flow, removed 10 selfloop flow, removed 10 redundant places. [2024-06-28 01:28:27,003 INFO L231 Difference]: Finished difference. Result has 514 places, 781 transitions, 14499 flow [2024-06-28 01:28:27,003 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=13845, PETRI_DIFFERENCE_MINUEND_PLACES=503, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=780, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=310, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=469, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=14499, PETRI_PLACES=514, PETRI_TRANSITIONS=781} [2024-06-28 01:28:27,004 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 472 predicate places. [2024-06-28 01:28:27,004 INFO L495 AbstractCegarLoop]: Abstraction has has 514 places, 781 transitions, 14499 flow [2024-06-28 01:28:27,004 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 10.23076923076923) internal successors, (133), 13 states have internal predecessors, (133), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:28:27,004 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:28:27,004 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 01:28:27,004 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable156 [2024-06-28 01:28:27,004 INFO L420 AbstractCegarLoop]: === Iteration 158 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:28:27,005 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:28:27,005 INFO L85 PathProgramCache]: Analyzing trace with hash -1086430172, now seen corresponding path program 16 times [2024-06-28 01:28:27,005 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:28:27,005 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [510320520] [2024-06-28 01:28:27,005 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:28:27,005 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:28:27,013 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:28:28,091 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 01:28:28,091 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:28:28,091 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [510320520] [2024-06-28 01:28:28,091 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [510320520] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:28:28,091 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:28:28,091 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-28 01:28:28,092 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2057187670] [2024-06-28 01:28:28,092 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:28:28,092 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-28 01:28:28,092 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:28:28,092 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-28 01:28:28,092 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=122, Unknown=0, NotChecked=0, Total=156 [2024-06-28 01:28:28,213 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 38 [2024-06-28 01:28:28,213 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 514 places, 781 transitions, 14499 flow. Second operand has 13 states, 13 states have (on average 10.23076923076923) internal successors, (133), 13 states have internal predecessors, (133), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:28:28,213 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:28:28,213 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 38 [2024-06-28 01:28:28,213 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:28:30,617 INFO L124 PetriNetUnfolderBase]: 4013/7561 cut-off events. [2024-06-28 01:28:30,618 INFO L125 PetriNetUnfolderBase]: For 456339/456339 co-relation queries the response was YES. [2024-06-28 01:28:30,707 INFO L83 FinitePrefix]: Finished finitePrefix Result has 52260 conditions, 7561 events. 4013/7561 cut-off events. For 456339/456339 co-relation queries the response was YES. Maximal size of possible extension queue 465. Compared 57474 event pairs, 787 based on Foata normal form. 2/7042 useless extension candidates. Maximal degree in co-relation 52031. Up to 4790 conditions per place. [2024-06-28 01:28:30,734 INFO L140 encePairwiseOnDemand]: 25/38 looper letters, 530 selfloop transitions, 286 changer transitions 0/824 dead transitions. [2024-06-28 01:28:30,734 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 525 places, 824 transitions, 16457 flow [2024-06-28 01:28:30,735 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-28 01:28:30,735 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-28 01:28:30,735 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 204 transitions. [2024-06-28 01:28:30,735 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4473684210526316 [2024-06-28 01:28:30,735 INFO L175 Difference]: Start difference. First operand has 514 places, 781 transitions, 14499 flow. Second operand 12 states and 204 transitions. [2024-06-28 01:28:30,735 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 525 places, 824 transitions, 16457 flow [2024-06-28 01:28:33,811 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 516 places, 824 transitions, 15815 flow, removed 11 selfloop flow, removed 9 redundant places. [2024-06-28 01:28:33,821 INFO L231 Difference]: Finished difference. Result has 517 places, 787 transitions, 14583 flow [2024-06-28 01:28:33,821 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=13857, PETRI_DIFFERENCE_MINUEND_PLACES=505, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=781, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=280, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=499, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=14583, PETRI_PLACES=517, PETRI_TRANSITIONS=787} [2024-06-28 01:28:33,822 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 475 predicate places. [2024-06-28 01:28:33,822 INFO L495 AbstractCegarLoop]: Abstraction has has 517 places, 787 transitions, 14583 flow [2024-06-28 01:28:33,822 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 10.23076923076923) internal successors, (133), 13 states have internal predecessors, (133), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:28:33,822 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:28:33,822 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 01:28:33,822 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable157 [2024-06-28 01:28:33,822 INFO L420 AbstractCegarLoop]: === Iteration 159 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:28:33,822 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:28:33,822 INFO L85 PathProgramCache]: Analyzing trace with hash -1696439268, now seen corresponding path program 17 times [2024-06-28 01:28:33,822 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:28:33,822 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [916578416] [2024-06-28 01:28:33,823 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:28:33,823 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:28:33,830 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:28:34,925 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:28:34,925 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:28:34,925 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [916578416] [2024-06-28 01:28:34,925 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [916578416] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:28:34,925 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:28:34,925 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-28 01:28:34,925 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [438985622] [2024-06-28 01:28:34,925 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:28:34,926 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-28 01:28:34,926 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:28:34,926 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-28 01:28:34,926 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=116, Unknown=0, NotChecked=0, Total=156 [2024-06-28 01:28:35,043 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 38 [2024-06-28 01:28:35,043 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 517 places, 787 transitions, 14583 flow. Second operand has 13 states, 13 states have (on average 10.23076923076923) internal successors, (133), 13 states have internal predecessors, (133), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:28:35,043 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:28:35,043 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 38 [2024-06-28 01:28:35,044 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:28:37,377 INFO L124 PetriNetUnfolderBase]: 4026/7577 cut-off events. [2024-06-28 01:28:37,377 INFO L125 PetriNetUnfolderBase]: For 462071/462071 co-relation queries the response was YES. [2024-06-28 01:28:37,469 INFO L83 FinitePrefix]: Finished finitePrefix Result has 52579 conditions, 7577 events. 4026/7577 cut-off events. For 462071/462071 co-relation queries the response was YES. Maximal size of possible extension queue 466. Compared 57578 event pairs, 757 based on Foata normal form. 2/7055 useless extension candidates. Maximal degree in co-relation 52349. Up to 4755 conditions per place. [2024-06-28 01:28:37,501 INFO L140 encePairwiseOnDemand]: 24/38 looper letters, 511 selfloop transitions, 310 changer transitions 0/829 dead transitions. [2024-06-28 01:28:37,501 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 528 places, 829 transitions, 16511 flow [2024-06-28 01:28:37,501 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-28 01:28:37,502 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-28 01:28:37,502 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 202 transitions. [2024-06-28 01:28:37,502 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44298245614035087 [2024-06-28 01:28:37,502 INFO L175 Difference]: Start difference. First operand has 517 places, 787 transitions, 14583 flow. Second operand 12 states and 202 transitions. [2024-06-28 01:28:37,502 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 528 places, 829 transitions, 16511 flow [2024-06-28 01:28:41,225 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 521 places, 829 transitions, 15957 flow, removed 26 selfloop flow, removed 7 redundant places. [2024-06-28 01:28:41,235 INFO L231 Difference]: Finished difference. Result has 522 places, 789 transitions, 14737 flow [2024-06-28 01:28:41,236 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=14029, PETRI_DIFFERENCE_MINUEND_PLACES=510, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=787, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=308, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=477, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=14737, PETRI_PLACES=522, PETRI_TRANSITIONS=789} [2024-06-28 01:28:41,236 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 480 predicate places. [2024-06-28 01:28:41,236 INFO L495 AbstractCegarLoop]: Abstraction has has 522 places, 789 transitions, 14737 flow [2024-06-28 01:28:41,236 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 10.23076923076923) internal successors, (133), 13 states have internal predecessors, (133), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:28:41,236 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:28:41,236 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 01:28:41,236 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable158 [2024-06-28 01:28:41,236 INFO L420 AbstractCegarLoop]: === Iteration 160 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:28:41,237 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:28:41,237 INFO L85 PathProgramCache]: Analyzing trace with hash -1093580012, now seen corresponding path program 18 times [2024-06-28 01:28:41,237 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:28:41,237 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1239393644] [2024-06-28 01:28:41,237 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:28:41,237 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:28:41,245 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:28:42,290 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 01:28:42,291 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:28:42,291 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1239393644] [2024-06-28 01:28:42,291 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1239393644] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:28:42,291 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:28:42,291 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-28 01:28:42,291 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [947452908] [2024-06-28 01:28:42,291 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:28:42,291 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-28 01:28:42,291 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:28:42,292 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-28 01:28:42,292 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=120, Unknown=0, NotChecked=0, Total=156 [2024-06-28 01:28:42,435 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 38 [2024-06-28 01:28:42,435 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 522 places, 789 transitions, 14737 flow. Second operand has 13 states, 13 states have (on average 10.23076923076923) internal successors, (133), 13 states have internal predecessors, (133), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:28:42,435 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:28:42,436 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 38 [2024-06-28 01:28:42,436 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:28:45,153 INFO L124 PetriNetUnfolderBase]: 4061/7633 cut-off events. [2024-06-28 01:28:45,153 INFO L125 PetriNetUnfolderBase]: For 470758/470758 co-relation queries the response was YES. [2024-06-28 01:28:45,228 INFO L83 FinitePrefix]: Finished finitePrefix Result has 53253 conditions, 7633 events. 4061/7633 cut-off events. For 470758/470758 co-relation queries the response was YES. Maximal size of possible extension queue 473. Compared 57968 event pairs, 781 based on Foata normal form. 2/7106 useless extension candidates. Maximal degree in co-relation 53022. Up to 4848 conditions per place. [2024-06-28 01:28:45,252 INFO L140 encePairwiseOnDemand]: 25/38 looper letters, 543 selfloop transitions, 284 changer transitions 0/835 dead transitions. [2024-06-28 01:28:45,252 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 533 places, 835 transitions, 16759 flow [2024-06-28 01:28:45,252 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-28 01:28:45,253 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-28 01:28:45,253 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 207 transitions. [2024-06-28 01:28:45,253 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45394736842105265 [2024-06-28 01:28:45,253 INFO L175 Difference]: Start difference. First operand has 522 places, 789 transitions, 14737 flow. Second operand 12 states and 207 transitions. [2024-06-28 01:28:45,253 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 533 places, 835 transitions, 16759 flow [2024-06-28 01:28:48,659 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 523 places, 835 transitions, 16063 flow, removed 28 selfloop flow, removed 10 redundant places. [2024-06-28 01:28:48,669 INFO L231 Difference]: Finished difference. Result has 524 places, 795 transitions, 14783 flow [2024-06-28 01:28:48,670 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=14049, PETRI_DIFFERENCE_MINUEND_PLACES=512, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=789, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=278, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=509, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=14783, PETRI_PLACES=524, PETRI_TRANSITIONS=795} [2024-06-28 01:28:48,670 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 482 predicate places. [2024-06-28 01:28:48,670 INFO L495 AbstractCegarLoop]: Abstraction has has 524 places, 795 transitions, 14783 flow [2024-06-28 01:28:48,670 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 10.23076923076923) internal successors, (133), 13 states have internal predecessors, (133), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:28:48,670 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:28:48,670 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 01:28:48,670 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable159 [2024-06-28 01:28:48,670 INFO L420 AbstractCegarLoop]: === Iteration 161 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:28:48,670 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:28:48,671 INFO L85 PathProgramCache]: Analyzing trace with hash 1482241542, now seen corresponding path program 19 times [2024-06-28 01:28:48,671 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:28:48,671 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1623467221] [2024-06-28 01:28:48,671 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:28:48,671 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:28:48,678 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:28:49,627 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 01:28:49,628 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:28:49,634 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1623467221] [2024-06-28 01:28:49,634 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1623467221] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:28:49,634 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:28:49,634 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-28 01:28:49,634 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [922820892] [2024-06-28 01:28:49,635 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:28:49,635 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-28 01:28:49,635 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:28:49,635 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-28 01:28:49,635 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=115, Unknown=0, NotChecked=0, Total=156 [2024-06-28 01:28:49,761 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 38 [2024-06-28 01:28:49,761 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 524 places, 795 transitions, 14783 flow. Second operand has 13 states, 13 states have (on average 10.23076923076923) internal successors, (133), 13 states have internal predecessors, (133), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:28:49,761 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:28:49,761 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 38 [2024-06-28 01:28:49,761 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:28:52,189 INFO L124 PetriNetUnfolderBase]: 4091/7674 cut-off events. [2024-06-28 01:28:52,189 INFO L125 PetriNetUnfolderBase]: For 504497/504497 co-relation queries the response was YES. [2024-06-28 01:28:52,275 INFO L83 FinitePrefix]: Finished finitePrefix Result has 54065 conditions, 7674 events. 4091/7674 cut-off events. For 504497/504497 co-relation queries the response was YES. Maximal size of possible extension queue 476. Compared 58280 event pairs, 760 based on Foata normal form. 2/7141 useless extension candidates. Maximal degree in co-relation 53833. Up to 4814 conditions per place. [2024-06-28 01:28:52,308 INFO L140 encePairwiseOnDemand]: 25/38 looper letters, 517 selfloop transitions, 318 changer transitions 0/843 dead transitions. [2024-06-28 01:28:52,308 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 536 places, 843 transitions, 17185 flow [2024-06-28 01:28:52,309 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-06-28 01:28:52,309 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2024-06-28 01:28:52,309 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 217 transitions. [2024-06-28 01:28:52,309 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4392712550607287 [2024-06-28 01:28:52,309 INFO L175 Difference]: Start difference. First operand has 524 places, 795 transitions, 14783 flow. Second operand 13 states and 217 transitions. [2024-06-28 01:28:52,309 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 536 places, 843 transitions, 17185 flow [2024-06-28 01:28:56,032 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 528 places, 843 transitions, 16588 flow, removed 30 selfloop flow, removed 8 redundant places. [2024-06-28 01:28:56,043 INFO L231 Difference]: Finished difference. Result has 530 places, 799 transitions, 15049 flow [2024-06-28 01:28:56,043 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=14186, PETRI_DIFFERENCE_MINUEND_PLACES=516, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=795, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=314, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=477, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=15049, PETRI_PLACES=530, PETRI_TRANSITIONS=799} [2024-06-28 01:28:56,043 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 488 predicate places. [2024-06-28 01:28:56,043 INFO L495 AbstractCegarLoop]: Abstraction has has 530 places, 799 transitions, 15049 flow [2024-06-28 01:28:56,043 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 10.23076923076923) internal successors, (133), 13 states have internal predecessors, (133), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:28:56,044 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:28:56,044 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 01:28:56,044 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable160 [2024-06-28 01:28:56,044 INFO L420 AbstractCegarLoop]: === Iteration 162 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:28:56,044 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:28:56,044 INFO L85 PathProgramCache]: Analyzing trace with hash -1093781822, now seen corresponding path program 20 times [2024-06-28 01:28:56,044 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:28:56,044 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1505709166] [2024-06-28 01:28:56,044 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:28:56,044 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:28:56,052 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:28:57,180 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 01:28:57,181 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:28:57,181 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1505709166] [2024-06-28 01:28:57,181 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1505709166] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:28:57,181 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:28:57,181 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-28 01:28:57,181 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [745762690] [2024-06-28 01:28:57,181 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:28:57,181 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-28 01:28:57,181 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:28:57,181 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-28 01:28:57,182 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=115, Unknown=0, NotChecked=0, Total=156 [2024-06-28 01:28:57,290 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 38 [2024-06-28 01:28:57,290 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 530 places, 799 transitions, 15049 flow. Second operand has 13 states, 13 states have (on average 10.23076923076923) internal successors, (133), 13 states have internal predecessors, (133), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:28:57,290 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:28:57,290 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 38 [2024-06-28 01:28:57,291 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:28:59,643 INFO L124 PetriNetUnfolderBase]: 4087/7671 cut-off events. [2024-06-28 01:28:59,643 INFO L125 PetriNetUnfolderBase]: For 484823/484823 co-relation queries the response was YES. [2024-06-28 01:28:59,738 INFO L83 FinitePrefix]: Finished finitePrefix Result has 53827 conditions, 7671 events. 4087/7671 cut-off events. For 484823/484823 co-relation queries the response was YES. Maximal size of possible extension queue 477. Compared 58278 event pairs, 781 based on Foata normal form. 2/7138 useless extension candidates. Maximal degree in co-relation 53593. Up to 4886 conditions per place. [2024-06-28 01:28:59,768 INFO L140 encePairwiseOnDemand]: 25/38 looper letters, 540 selfloop transitions, 291 changer transitions 0/839 dead transitions. [2024-06-28 01:28:59,768 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 541 places, 839 transitions, 16915 flow [2024-06-28 01:28:59,768 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-28 01:28:59,768 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-28 01:28:59,768 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 206 transitions. [2024-06-28 01:28:59,768 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4517543859649123 [2024-06-28 01:28:59,769 INFO L175 Difference]: Start difference. First operand has 530 places, 799 transitions, 15049 flow. Second operand 12 states and 206 transitions. [2024-06-28 01:28:59,769 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 541 places, 839 transitions, 16915 flow [2024-06-28 01:29:03,887 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 531 places, 839 transitions, 16210 flow, removed 46 selfloop flow, removed 10 redundant places. [2024-06-28 01:29:03,898 INFO L231 Difference]: Finished difference. Result has 532 places, 799 transitions, 14932 flow [2024-06-28 01:29:03,898 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=14344, PETRI_DIFFERENCE_MINUEND_PLACES=520, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=799, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=291, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=508, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=14932, PETRI_PLACES=532, PETRI_TRANSITIONS=799} [2024-06-28 01:29:03,898 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 490 predicate places. [2024-06-28 01:29:03,899 INFO L495 AbstractCegarLoop]: Abstraction has has 532 places, 799 transitions, 14932 flow [2024-06-28 01:29:03,899 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 10.23076923076923) internal successors, (133), 13 states have internal predecessors, (133), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:29:03,899 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:29:03,899 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 01:29:03,899 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable161 [2024-06-28 01:29:03,899 INFO L420 AbstractCegarLoop]: === Iteration 163 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:29:03,899 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:29:03,899 INFO L85 PathProgramCache]: Analyzing trace with hash -1093787557, now seen corresponding path program 14 times [2024-06-28 01:29:03,899 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:29:03,899 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1130262813] [2024-06-28 01:29:03,899 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:29:03,899 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:29:03,905 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:29:04,832 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 01:29:04,833 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:29:04,833 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1130262813] [2024-06-28 01:29:04,833 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1130262813] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:29:04,833 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:29:04,833 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-28 01:29:04,833 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [601816279] [2024-06-28 01:29:04,833 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:29:04,833 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-28 01:29:04,833 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:29:04,833 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-28 01:29:04,833 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=115, Unknown=0, NotChecked=0, Total=156 [2024-06-28 01:29:04,950 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 38 [2024-06-28 01:29:04,951 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 532 places, 799 transitions, 14932 flow. Second operand has 13 states, 13 states have (on average 10.23076923076923) internal successors, (133), 13 states have internal predecessors, (133), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:29:04,951 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:29:04,951 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 38 [2024-06-28 01:29:04,951 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:29:07,496 INFO L124 PetriNetUnfolderBase]: 4237/8006 cut-off events. [2024-06-28 01:29:07,496 INFO L125 PetriNetUnfolderBase]: For 637011/637011 co-relation queries the response was YES. [2024-06-28 01:29:07,621 INFO L83 FinitePrefix]: Finished finitePrefix Result has 55182 conditions, 8006 events. 4237/8006 cut-off events. For 637011/637011 co-relation queries the response was YES. Maximal size of possible extension queue 485. Compared 61533 event pairs, 1100 based on Foata normal form. 14/7461 useless extension candidates. Maximal degree in co-relation 54947. Up to 5705 conditions per place. [2024-06-28 01:29:07,662 INFO L140 encePairwiseOnDemand]: 24/38 looper letters, 688 selfloop transitions, 190 changer transitions 0/886 dead transitions. [2024-06-28 01:29:07,662 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 544 places, 886 transitions, 17580 flow [2024-06-28 01:29:07,662 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-06-28 01:29:07,662 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2024-06-28 01:29:07,663 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 222 transitions. [2024-06-28 01:29:07,663 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4493927125506073 [2024-06-28 01:29:07,663 INFO L175 Difference]: Start difference. First operand has 532 places, 799 transitions, 14932 flow. Second operand 13 states and 222 transitions. [2024-06-28 01:29:07,663 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 544 places, 886 transitions, 17580 flow [2024-06-28 01:29:11,812 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 531 places, 886 transitions, 16732 flow, removed 68 selfloop flow, removed 13 redundant places. [2024-06-28 01:29:11,827 INFO L231 Difference]: Finished difference. Result has 535 places, 812 transitions, 14852 flow [2024-06-28 01:29:11,827 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=14174, PETRI_DIFFERENCE_MINUEND_PLACES=519, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=799, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=177, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=609, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=14852, PETRI_PLACES=535, PETRI_TRANSITIONS=812} [2024-06-28 01:29:11,828 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 493 predicate places. [2024-06-28 01:29:11,828 INFO L495 AbstractCegarLoop]: Abstraction has has 535 places, 812 transitions, 14852 flow [2024-06-28 01:29:11,828 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 10.23076923076923) internal successors, (133), 13 states have internal predecessors, (133), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:29:11,828 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:29:11,828 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 01:29:11,828 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable162 [2024-06-28 01:29:11,829 INFO L420 AbstractCegarLoop]: === Iteration 164 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:29:11,829 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:29:11,829 INFO L85 PathProgramCache]: Analyzing trace with hash 1482241387, now seen corresponding path program 15 times [2024-06-28 01:29:11,829 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:29:11,829 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1798784295] [2024-06-28 01:29:11,829 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:29:11,830 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:29:11,837 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:29:12,835 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 01:29:12,835 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:29:12,835 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1798784295] [2024-06-28 01:29:12,835 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1798784295] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:29:12,835 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:29:12,835 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-28 01:29:12,835 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1185139442] [2024-06-28 01:29:12,836 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:29:12,836 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-28 01:29:12,836 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:29:12,836 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-28 01:29:12,836 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=115, Unknown=0, NotChecked=0, Total=156 [2024-06-28 01:29:12,988 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 38 [2024-06-28 01:29:12,989 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 535 places, 812 transitions, 14852 flow. Second operand has 13 states, 13 states have (on average 10.23076923076923) internal successors, (133), 13 states have internal predecessors, (133), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:29:12,989 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:29:12,989 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 38 [2024-06-28 01:29:12,989 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:29:15,425 INFO L124 PetriNetUnfolderBase]: 4400/8338 cut-off events. [2024-06-28 01:29:15,425 INFO L125 PetriNetUnfolderBase]: For 674648/674648 co-relation queries the response was YES. [2024-06-28 01:29:15,524 INFO L83 FinitePrefix]: Finished finitePrefix Result has 56311 conditions, 8338 events. 4400/8338 cut-off events. For 674648/674648 co-relation queries the response was YES. Maximal size of possible extension queue 493. Compared 64710 event pairs, 1152 based on Foata normal form. 16/7767 useless extension candidates. Maximal degree in co-relation 56073. Up to 5964 conditions per place. [2024-06-28 01:29:15,553 INFO L140 encePairwiseOnDemand]: 24/38 looper letters, 687 selfloop transitions, 202 changer transitions 0/897 dead transitions. [2024-06-28 01:29:15,553 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 547 places, 897 transitions, 17510 flow [2024-06-28 01:29:15,553 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-06-28 01:29:15,553 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2024-06-28 01:29:15,554 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 218 transitions. [2024-06-28 01:29:15,554 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44129554655870445 [2024-06-28 01:29:15,554 INFO L175 Difference]: Start difference. First operand has 535 places, 812 transitions, 14852 flow. Second operand 13 states and 218 transitions. [2024-06-28 01:29:15,554 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 547 places, 897 transitions, 17510 flow [2024-06-28 01:29:19,476 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 543 places, 897 transitions, 17331 flow, removed 13 selfloop flow, removed 4 redundant places. [2024-06-28 01:29:19,487 INFO L231 Difference]: Finished difference. Result has 546 places, 826 transitions, 15412 flow [2024-06-28 01:29:19,488 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=14673, PETRI_DIFFERENCE_MINUEND_PLACES=531, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=812, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=188, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=610, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=15412, PETRI_PLACES=546, PETRI_TRANSITIONS=826} [2024-06-28 01:29:19,488 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 504 predicate places. [2024-06-28 01:29:19,488 INFO L495 AbstractCegarLoop]: Abstraction has has 546 places, 826 transitions, 15412 flow [2024-06-28 01:29:19,488 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 10.23076923076923) internal successors, (133), 13 states have internal predecessors, (133), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:29:19,488 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:29:19,489 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 01:29:19,489 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable163 [2024-06-28 01:29:19,489 INFO L420 AbstractCegarLoop]: === Iteration 165 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:29:19,489 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:29:19,489 INFO L85 PathProgramCache]: Analyzing trace with hash -1093787402, now seen corresponding path program 21 times [2024-06-28 01:29:19,490 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:29:19,490 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [314848325] [2024-06-28 01:29:19,490 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:29:19,490 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:29:19,498 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:29:20,424 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 01:29:20,425 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:29:20,425 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [314848325] [2024-06-28 01:29:20,425 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [314848325] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:29:20,425 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:29:20,425 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-28 01:29:20,425 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [143089051] [2024-06-28 01:29:20,425 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:29:20,425 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-28 01:29:20,425 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:29:20,425 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-28 01:29:20,426 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=115, Unknown=0, NotChecked=0, Total=156 [2024-06-28 01:29:20,521 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 38 [2024-06-28 01:29:20,521 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 546 places, 826 transitions, 15412 flow. Second operand has 13 states, 13 states have (on average 10.23076923076923) internal successors, (133), 13 states have internal predecessors, (133), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:29:20,521 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:29:20,521 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 38 [2024-06-28 01:29:20,521 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:29:23,341 INFO L124 PetriNetUnfolderBase]: 4396/8311 cut-off events. [2024-06-28 01:29:23,341 INFO L125 PetriNetUnfolderBase]: For 482722/482722 co-relation queries the response was YES. [2024-06-28 01:29:23,430 INFO L83 FinitePrefix]: Finished finitePrefix Result has 56183 conditions, 8311 events. 4396/8311 cut-off events. For 482722/482722 co-relation queries the response was YES. Maximal size of possible extension queue 493. Compared 64468 event pairs, 886 based on Foata normal form. 2/7725 useless extension candidates. Maximal degree in co-relation 55942. Up to 5355 conditions per place. [2024-06-28 01:29:23,459 INFO L140 encePairwiseOnDemand]: 25/38 looper letters, 550 selfloop transitions, 311 changer transitions 0/869 dead transitions. [2024-06-28 01:29:23,459 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 558 places, 869 transitions, 17350 flow [2024-06-28 01:29:23,459 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-06-28 01:29:23,459 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2024-06-28 01:29:23,460 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 221 transitions. [2024-06-28 01:29:23,460 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4473684210526316 [2024-06-28 01:29:23,460 INFO L175 Difference]: Start difference. First operand has 546 places, 826 transitions, 15412 flow. Second operand 13 states and 221 transitions. [2024-06-28 01:29:23,460 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 558 places, 869 transitions, 17350 flow [2024-06-28 01:29:27,178 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 553 places, 869 transitions, 17064 flow, removed 39 selfloop flow, removed 5 redundant places. [2024-06-28 01:29:27,189 INFO L231 Difference]: Finished difference. Result has 554 places, 826 transitions, 15754 flow [2024-06-28 01:29:27,190 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=15126, PETRI_DIFFERENCE_MINUEND_PLACES=541, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=826, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=311, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=515, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=15754, PETRI_PLACES=554, PETRI_TRANSITIONS=826} [2024-06-28 01:29:27,190 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 512 predicate places. [2024-06-28 01:29:27,190 INFO L495 AbstractCegarLoop]: Abstraction has has 554 places, 826 transitions, 15754 flow [2024-06-28 01:29:27,190 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 10.23076923076923) internal successors, (133), 13 states have internal predecessors, (133), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:29:27,190 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:29:27,190 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 01:29:27,191 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable164 [2024-06-28 01:29:27,191 INFO L420 AbstractCegarLoop]: === Iteration 166 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:29:27,191 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:29:27,191 INFO L85 PathProgramCache]: Analyzing trace with hash 1489875478, now seen corresponding path program 15 times [2024-06-28 01:29:27,191 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:29:27,191 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1931513009] [2024-06-28 01:29:27,191 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:29:27,191 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:29:27,200 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:29:28,221 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 01:29:28,221 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:29:28,221 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1931513009] [2024-06-28 01:29:28,222 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1931513009] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:29:28,222 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:29:28,222 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-28 01:29:28,222 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1822387188] [2024-06-28 01:29:28,222 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:29:28,222 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-28 01:29:28,222 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:29:28,222 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-28 01:29:28,222 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=119, Unknown=0, NotChecked=0, Total=156 [2024-06-28 01:29:28,374 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 38 [2024-06-28 01:29:28,374 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 554 places, 826 transitions, 15754 flow. Second operand has 13 states, 13 states have (on average 10.23076923076923) internal successors, (133), 13 states have internal predecessors, (133), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:29:28,375 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:29:28,375 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 38 [2024-06-28 01:29:28,375 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:29:30,926 INFO L124 PetriNetUnfolderBase]: 4393/8303 cut-off events. [2024-06-28 01:29:30,926 INFO L125 PetriNetUnfolderBase]: For 460611/460611 co-relation queries the response was YES. [2024-06-28 01:29:31,024 INFO L83 FinitePrefix]: Finished finitePrefix Result has 56146 conditions, 8303 events. 4393/8303 cut-off events. For 460611/460611 co-relation queries the response was YES. Maximal size of possible extension queue 493. Compared 64408 event pairs, 892 based on Foata normal form. 2/7720 useless extension candidates. Maximal degree in co-relation 55904. Up to 6216 conditions per place. [2024-06-28 01:29:31,053 INFO L140 encePairwiseOnDemand]: 27/38 looper letters, 541 selfloop transitions, 319 changer transitions 0/868 dead transitions. [2024-06-28 01:29:31,053 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 564 places, 868 transitions, 17699 flow [2024-06-28 01:29:31,053 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 01:29:31,053 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 01:29:31,054 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 189 transitions. [2024-06-28 01:29:31,054 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45215311004784686 [2024-06-28 01:29:31,054 INFO L175 Difference]: Start difference. First operand has 554 places, 826 transitions, 15754 flow. Second operand 11 states and 189 transitions. [2024-06-28 01:29:31,054 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 564 places, 868 transitions, 17699 flow [2024-06-28 01:29:34,480 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 551 places, 868 transitions, 16846 flow, removed 49 selfloop flow, removed 13 redundant places. [2024-06-28 01:29:34,491 INFO L231 Difference]: Finished difference. Result has 552 places, 826 transitions, 15543 flow [2024-06-28 01:29:34,492 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=14901, PETRI_DIFFERENCE_MINUEND_PLACES=541, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=826, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=319, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=507, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=15543, PETRI_PLACES=552, PETRI_TRANSITIONS=826} [2024-06-28 01:29:34,493 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 510 predicate places. [2024-06-28 01:29:34,493 INFO L495 AbstractCegarLoop]: Abstraction has has 552 places, 826 transitions, 15543 flow [2024-06-28 01:29:34,493 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 10.23076923076923) internal successors, (133), 13 states have internal predecessors, (133), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:29:34,493 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:29:34,493 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 01:29:34,493 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable165 [2024-06-28 01:29:34,493 INFO L420 AbstractCegarLoop]: === Iteration 167 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:29:34,494 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:29:34,494 INFO L85 PathProgramCache]: Analyzing trace with hash -87062744, now seen corresponding path program 16 times [2024-06-28 01:29:34,494 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:29:34,494 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2009855019] [2024-06-28 01:29:34,494 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:29:34,494 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:29:34,502 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:29:35,535 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 01:29:35,535 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:29:35,535 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2009855019] [2024-06-28 01:29:35,535 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2009855019] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:29:35,536 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:29:35,536 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-28 01:29:35,536 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1096821030] [2024-06-28 01:29:35,536 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:29:35,536 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-28 01:29:35,536 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:29:35,536 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-28 01:29:35,536 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=125, Unknown=0, NotChecked=0, Total=156 [2024-06-28 01:29:35,652 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 38 [2024-06-28 01:29:35,652 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 552 places, 826 transitions, 15543 flow. Second operand has 13 states, 13 states have (on average 10.23076923076923) internal successors, (133), 13 states have internal predecessors, (133), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:29:35,652 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:29:35,652 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 38 [2024-06-28 01:29:35,652 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:29:38,227 INFO L124 PetriNetUnfolderBase]: 4410/8347 cut-off events. [2024-06-28 01:29:38,227 INFO L125 PetriNetUnfolderBase]: For 458477/458477 co-relation queries the response was YES. [2024-06-28 01:29:38,339 INFO L83 FinitePrefix]: Finished finitePrefix Result has 55521 conditions, 8347 events. 4410/8347 cut-off events. For 458477/458477 co-relation queries the response was YES. Maximal size of possible extension queue 494. Compared 64864 event pairs, 1334 based on Foata normal form. 2/7759 useless extension candidates. Maximal degree in co-relation 55279. Up to 7364 conditions per place. [2024-06-28 01:29:38,372 INFO L140 encePairwiseOnDemand]: 27/38 looper letters, 819 selfloop transitions, 25 changer transitions 0/852 dead transitions. [2024-06-28 01:29:38,372 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 562 places, 852 transitions, 17351 flow [2024-06-28 01:29:38,373 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 01:29:38,373 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 01:29:38,373 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 167 transitions. [2024-06-28 01:29:38,373 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.39952153110047844 [2024-06-28 01:29:38,373 INFO L175 Difference]: Start difference. First operand has 552 places, 826 transitions, 15543 flow. Second operand 11 states and 167 transitions. [2024-06-28 01:29:38,373 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 562 places, 852 transitions, 17351 flow [2024-06-28 01:29:41,684 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 551 places, 852 transitions, 16361 flow, removed 11 selfloop flow, removed 11 redundant places. [2024-06-28 01:29:41,695 INFO L231 Difference]: Finished difference. Result has 552 places, 827 transitions, 14628 flow [2024-06-28 01:29:41,695 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=14553, PETRI_DIFFERENCE_MINUEND_PLACES=541, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=826, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=24, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=801, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=14628, PETRI_PLACES=552, PETRI_TRANSITIONS=827} [2024-06-28 01:29:41,695 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 510 predicate places. [2024-06-28 01:29:41,695 INFO L495 AbstractCegarLoop]: Abstraction has has 552 places, 827 transitions, 14628 flow [2024-06-28 01:29:41,695 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 10.23076923076923) internal successors, (133), 13 states have internal predecessors, (133), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:29:41,696 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:29:41,696 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 01:29:41,696 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable166 [2024-06-28 01:29:41,696 INFO L420 AbstractCegarLoop]: === Iteration 168 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:29:41,696 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:29:41,696 INFO L85 PathProgramCache]: Analyzing trace with hash 910316948, now seen corresponding path program 17 times [2024-06-28 01:29:41,696 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:29:41,696 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2036838278] [2024-06-28 01:29:41,696 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:29:41,696 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:29:41,704 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:29:42,833 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 01:29:42,833 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:29:42,833 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2036838278] [2024-06-28 01:29:42,834 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2036838278] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:29:42,834 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:29:42,834 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-28 01:29:42,834 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [668438324] [2024-06-28 01:29:42,834 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:29:42,834 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-28 01:29:42,834 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:29:42,834 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-28 01:29:42,835 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=122, Unknown=0, NotChecked=0, Total=156 [2024-06-28 01:29:42,943 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 38 [2024-06-28 01:29:42,943 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 552 places, 827 transitions, 14628 flow. Second operand has 13 states, 13 states have (on average 10.23076923076923) internal successors, (133), 13 states have internal predecessors, (133), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:29:42,943 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:29:42,943 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 38 [2024-06-28 01:29:42,943 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:29:45,837 INFO L124 PetriNetUnfolderBase]: 4441/8410 cut-off events. [2024-06-28 01:29:45,837 INFO L125 PetriNetUnfolderBase]: For 457818/457818 co-relation queries the response was YES. [2024-06-28 01:29:45,920 INFO L83 FinitePrefix]: Finished finitePrefix Result has 54134 conditions, 8410 events. 4441/8410 cut-off events. For 457818/457818 co-relation queries the response was YES. Maximal size of possible extension queue 499. Compared 65521 event pairs, 1330 based on Foata normal form. 2/7817 useless extension candidates. Maximal degree in co-relation 53892. Up to 7339 conditions per place. [2024-06-28 01:29:45,946 INFO L140 encePairwiseOnDemand]: 26/38 looper letters, 806 selfloop transitions, 46 changer transitions 0/860 dead transitions. [2024-06-28 01:29:45,947 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 562 places, 860 transitions, 16576 flow [2024-06-28 01:29:45,948 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 01:29:45,948 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 01:29:45,948 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 173 transitions. [2024-06-28 01:29:45,949 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4138755980861244 [2024-06-28 01:29:45,949 INFO L175 Difference]: Start difference. First operand has 552 places, 827 transitions, 14628 flow. Second operand 11 states and 173 transitions. [2024-06-28 01:29:45,949 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 562 places, 860 transitions, 16576 flow [2024-06-28 01:29:49,327 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 553 places, 860 transitions, 16513 flow, removed 8 selfloop flow, removed 9 redundant places. [2024-06-28 01:29:49,338 INFO L231 Difference]: Finished difference. Result has 554 places, 832 transitions, 14784 flow [2024-06-28 01:29:49,338 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=14565, PETRI_DIFFERENCE_MINUEND_PLACES=543, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=827, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=41, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=785, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=14784, PETRI_PLACES=554, PETRI_TRANSITIONS=832} [2024-06-28 01:29:49,338 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 512 predicate places. [2024-06-28 01:29:49,338 INFO L495 AbstractCegarLoop]: Abstraction has has 554 places, 832 transitions, 14784 flow [2024-06-28 01:29:49,338 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 10.23076923076923) internal successors, (133), 13 states have internal predecessors, (133), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:29:49,338 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:29:49,338 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 01:29:49,338 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable167 [2024-06-28 01:29:49,338 INFO L420 AbstractCegarLoop]: === Iteration 169 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:29:49,339 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:29:49,339 INFO L85 PathProgramCache]: Analyzing trace with hash -116893074, now seen corresponding path program 18 times [2024-06-28 01:29:49,339 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:29:49,339 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [353443759] [2024-06-28 01:29:49,339 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:29:49,339 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:29:49,347 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:29:50,323 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 01:29:50,324 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:29:50,324 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [353443759] [2024-06-28 01:29:50,324 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [353443759] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:29:50,324 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:29:50,324 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-28 01:29:50,324 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [413828731] [2024-06-28 01:29:50,324 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:29:50,324 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-28 01:29:50,324 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:29:50,325 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-28 01:29:50,325 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=101, Unknown=0, NotChecked=0, Total=132 [2024-06-28 01:29:50,432 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 38 [2024-06-28 01:29:50,433 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 554 places, 832 transitions, 14784 flow. Second operand has 12 states, 12 states have (on average 10.333333333333334) internal successors, (124), 12 states have internal predecessors, (124), 0 states have call successors, (0), 0 states 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 01:29:50,433 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:29:50,433 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 38 [2024-06-28 01:29:50,433 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:29:53,276 INFO L124 PetriNetUnfolderBase]: 4458/8450 cut-off events. [2024-06-28 01:29:53,276 INFO L125 PetriNetUnfolderBase]: For 463221/463221 co-relation queries the response was YES. [2024-06-28 01:29:53,376 INFO L83 FinitePrefix]: Finished finitePrefix Result has 54362 conditions, 8450 events. 4458/8450 cut-off events. For 463221/463221 co-relation queries the response was YES. Maximal size of possible extension queue 499. Compared 65969 event pairs, 1322 based on Foata normal form. 2/7855 useless extension candidates. Maximal degree in co-relation 54119. Up to 7184 conditions per place. [2024-06-28 01:29:53,406 INFO L140 encePairwiseOnDemand]: 26/38 looper letters, 758 selfloop transitions, 98 changer transitions 0/864 dead transitions. [2024-06-28 01:29:53,406 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 564 places, 864 transitions, 16679 flow [2024-06-28 01:29:53,406 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 01:29:53,407 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 01:29:53,407 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 175 transitions. [2024-06-28 01:29:53,407 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.41866028708133973 [2024-06-28 01:29:53,407 INFO L175 Difference]: Start difference. First operand has 554 places, 832 transitions, 14784 flow. Second operand 11 states and 175 transitions. [2024-06-28 01:29:53,407 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 564 places, 864 transitions, 16679 flow [2024-06-28 01:29:57,103 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 556 places, 864 transitions, 16509 flow, removed 14 selfloop flow, removed 8 redundant places. [2024-06-28 01:29:57,114 INFO L231 Difference]: Finished difference. Result has 558 places, 834 transitions, 14861 flow [2024-06-28 01:29:57,114 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=14614, PETRI_DIFFERENCE_MINUEND_PLACES=546, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=832, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=96, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=734, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=14861, PETRI_PLACES=558, PETRI_TRANSITIONS=834} [2024-06-28 01:29:57,114 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 516 predicate places. [2024-06-28 01:29:57,115 INFO L495 AbstractCegarLoop]: Abstraction has has 558 places, 834 transitions, 14861 flow [2024-06-28 01:29:57,115 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 10.333333333333334) internal successors, (124), 12 states have internal predecessors, (124), 0 states have call successors, (0), 0 states 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 01:29:57,115 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:29:57,115 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 01:29:57,115 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable168 [2024-06-28 01:29:57,115 INFO L420 AbstractCegarLoop]: === Iteration 170 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:29:57,115 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:29:57,115 INFO L85 PathProgramCache]: Analyzing trace with hash -2077379268, now seen corresponding path program 19 times [2024-06-28 01:29:57,115 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:29:57,115 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [868896476] [2024-06-28 01:29:57,115 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:29:57,115 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:29:57,123 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:29:58,120 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 01:29:58,121 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:29:58,121 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [868896476] [2024-06-28 01:29:58,121 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [868896476] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:29:58,121 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:29:58,121 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-28 01:29:58,121 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1602404244] [2024-06-28 01:29:58,121 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:29:58,121 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-28 01:29:58,121 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:29:58,121 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-28 01:29:58,122 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=122, Unknown=0, NotChecked=0, Total=156 [2024-06-28 01:29:58,237 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 38 [2024-06-28 01:29:58,237 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 558 places, 834 transitions, 14861 flow. Second operand has 13 states, 13 states have (on average 10.23076923076923) internal successors, (133), 13 states have internal predecessors, (133), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:29:58,237 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:29:58,237 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 38 [2024-06-28 01:29:58,237 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:30:00,881 INFO L124 PetriNetUnfolderBase]: 4475/8480 cut-off events. [2024-06-28 01:30:00,881 INFO L125 PetriNetUnfolderBase]: For 468096/468096 co-relation queries the response was YES. [2024-06-28 01:30:00,996 INFO L83 FinitePrefix]: Finished finitePrefix Result has 54714 conditions, 8480 events. 4475/8480 cut-off events. For 468096/468096 co-relation queries the response was YES. Maximal size of possible extension queue 502. Compared 66318 event pairs, 1343 based on Foata normal form. 2/7886 useless extension candidates. Maximal degree in co-relation 54470. Up to 7347 conditions per place. [2024-06-28 01:30:01,029 INFO L140 encePairwiseOnDemand]: 26/38 looper letters, 811 selfloop transitions, 47 changer transitions 0/866 dead transitions. [2024-06-28 01:30:01,029 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 568 places, 866 transitions, 16741 flow [2024-06-28 01:30:01,030 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 01:30:01,030 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 01:30:01,030 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 177 transitions. [2024-06-28 01:30:01,030 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.423444976076555 [2024-06-28 01:30:01,030 INFO L175 Difference]: Start difference. First operand has 558 places, 834 transitions, 14861 flow. Second operand 11 states and 177 transitions. [2024-06-28 01:30:01,030 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 568 places, 866 transitions, 16741 flow [2024-06-28 01:30:04,951 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 560 places, 866 transitions, 16569 flow, removed 11 selfloop flow, removed 8 redundant places. [2024-06-28 01:30:04,961 INFO L231 Difference]: Finished difference. Result has 561 places, 835 transitions, 14813 flow [2024-06-28 01:30:04,962 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=14689, PETRI_DIFFERENCE_MINUEND_PLACES=550, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=834, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=46, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=787, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=14813, PETRI_PLACES=561, PETRI_TRANSITIONS=835} [2024-06-28 01:30:04,962 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 519 predicate places. [2024-06-28 01:30:04,962 INFO L495 AbstractCegarLoop]: Abstraction has has 561 places, 835 transitions, 14813 flow [2024-06-28 01:30:04,962 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 10.23076923076923) internal successors, (133), 13 states have internal predecessors, (133), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:30:04,962 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:30:04,962 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 01:30:04,962 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable169 [2024-06-28 01:30:04,962 INFO L420 AbstractCegarLoop]: === Iteration 171 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:30:04,962 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:30:04,962 INFO L85 PathProgramCache]: Analyzing trace with hash -2077062138, now seen corresponding path program 20 times [2024-06-28 01:30:04,962 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:30:04,963 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1809425589] [2024-06-28 01:30:04,963 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:30:04,963 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:30:04,970 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:30:05,956 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 01:30:05,956 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:30:05,956 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1809425589] [2024-06-28 01:30:05,956 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1809425589] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:30:05,956 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:30:05,956 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-28 01:30:05,957 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [772367058] [2024-06-28 01:30:05,957 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:30:05,957 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-28 01:30:05,957 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:30:05,957 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-28 01:30:05,957 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=121, Unknown=0, NotChecked=0, Total=156 [2024-06-28 01:30:06,071 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 38 [2024-06-28 01:30:06,071 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 561 places, 835 transitions, 14813 flow. Second operand has 13 states, 13 states have (on average 10.23076923076923) internal successors, (133), 13 states have internal predecessors, (133), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:30:06,071 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:30:06,071 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 38 [2024-06-28 01:30:06,071 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:30:08,696 INFO L124 PetriNetUnfolderBase]: 4512/8556 cut-off events. [2024-06-28 01:30:08,697 INFO L125 PetriNetUnfolderBase]: For 501785/501785 co-relation queries the response was YES. [2024-06-28 01:30:08,808 INFO L83 FinitePrefix]: Finished finitePrefix Result has 55406 conditions, 8556 events. 4512/8556 cut-off events. For 501785/501785 co-relation queries the response was YES. Maximal size of possible extension queue 505. Compared 67011 event pairs, 1361 based on Foata normal form. 2/7958 useless extension candidates. Maximal degree in co-relation 55162. Up to 7262 conditions per place. [2024-06-28 01:30:08,841 INFO L140 encePairwiseOnDemand]: 26/38 looper letters, 816 selfloop transitions, 48 changer transitions 0/872 dead transitions. [2024-06-28 01:30:08,841 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 571 places, 872 transitions, 17089 flow [2024-06-28 01:30:08,841 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 01:30:08,841 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 01:30:08,842 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 180 transitions. [2024-06-28 01:30:08,842 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.430622009569378 [2024-06-28 01:30:08,842 INFO L175 Difference]: Start difference. First operand has 561 places, 835 transitions, 14813 flow. Second operand 11 states and 180 transitions. [2024-06-28 01:30:08,842 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 571 places, 872 transitions, 17089 flow [2024-06-28 01:30:13,201 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 562 places, 872 transitions, 16975 flow, removed 11 selfloop flow, removed 9 redundant places. [2024-06-28 01:30:13,212 INFO L231 Difference]: Finished difference. Result has 563 places, 837 transitions, 14853 flow [2024-06-28 01:30:13,212 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=14699, PETRI_DIFFERENCE_MINUEND_PLACES=552, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=835, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=47, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=788, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=14853, PETRI_PLACES=563, PETRI_TRANSITIONS=837} [2024-06-28 01:30:13,212 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 521 predicate places. [2024-06-28 01:30:13,212 INFO L495 AbstractCegarLoop]: Abstraction has has 563 places, 837 transitions, 14853 flow [2024-06-28 01:30:13,212 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 10.23076923076923) internal successors, (133), 13 states have internal predecessors, (133), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:30:13,212 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:30:13,212 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 01:30:13,212 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable170 [2024-06-28 01:30:13,212 INFO L420 AbstractCegarLoop]: === Iteration 172 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:30:13,213 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:30:13,213 INFO L85 PathProgramCache]: Analyzing trace with hash 2025417862, now seen corresponding path program 21 times [2024-06-28 01:30:13,213 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:30:13,213 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1513233306] [2024-06-28 01:30:13,213 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:30:13,213 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:30:13,221 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:30:14,254 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 01:30:14,255 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:30:14,255 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1513233306] [2024-06-28 01:30:14,255 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1513233306] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:30:14,255 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:30:14,255 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-28 01:30:14,255 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1346473005] [2024-06-28 01:30:14,255 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:30:14,255 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-28 01:30:14,255 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:30:14,255 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-28 01:30:14,256 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=122, Unknown=0, NotChecked=0, Total=156 [2024-06-28 01:30:14,369 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 38 [2024-06-28 01:30:14,370 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 563 places, 837 transitions, 14853 flow. Second operand has 13 states, 13 states have (on average 10.23076923076923) internal successors, (133), 13 states have internal predecessors, (133), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:30:14,370 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:30:14,370 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 38 [2024-06-28 01:30:14,370 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:30:17,521 INFO L124 PetriNetUnfolderBase]: 4529/8608 cut-off events. [2024-06-28 01:30:17,521 INFO L125 PetriNetUnfolderBase]: For 507744/507744 co-relation queries the response was YES. [2024-06-28 01:30:17,609 INFO L83 FinitePrefix]: Finished finitePrefix Result has 55641 conditions, 8608 events. 4529/8608 cut-off events. For 507744/507744 co-relation queries the response was YES. Maximal size of possible extension queue 507. Compared 67711 event pairs, 1381 based on Foata normal form. 2/8005 useless extension candidates. Maximal degree in co-relation 55396. Up to 7521 conditions per place. [2024-06-28 01:30:17,634 INFO L140 encePairwiseOnDemand]: 27/38 looper letters, 833 selfloop transitions, 25 changer transitions 0/866 dead transitions. [2024-06-28 01:30:17,635 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 573 places, 866 transitions, 16715 flow [2024-06-28 01:30:17,635 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 01:30:17,635 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 01:30:17,635 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 171 transitions. [2024-06-28 01:30:17,635 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4090909090909091 [2024-06-28 01:30:17,635 INFO L175 Difference]: Start difference. First operand has 563 places, 837 transitions, 14853 flow. Second operand 11 states and 171 transitions. [2024-06-28 01:30:17,636 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 573 places, 866 transitions, 16715 flow [2024-06-28 01:30:21,389 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 566 places, 866 transitions, 16630 flow, removed 14 selfloop flow, removed 7 redundant places. [2024-06-28 01:30:21,399 INFO L231 Difference]: Finished difference. Result has 567 places, 838 transitions, 14852 flow [2024-06-28 01:30:21,399 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=14768, PETRI_DIFFERENCE_MINUEND_PLACES=556, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=837, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=24, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=812, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=14852, PETRI_PLACES=567, PETRI_TRANSITIONS=838} [2024-06-28 01:30:21,400 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 525 predicate places. [2024-06-28 01:30:21,400 INFO L495 AbstractCegarLoop]: Abstraction has has 567 places, 838 transitions, 14852 flow [2024-06-28 01:30:21,400 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 10.23076923076923) internal successors, (133), 13 states have internal predecessors, (133), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:30:21,400 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:30:21,400 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 01:30:21,400 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable171 [2024-06-28 01:30:21,400 INFO L420 AbstractCegarLoop]: === Iteration 173 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:30:21,400 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:30:21,400 INFO L85 PathProgramCache]: Analyzing trace with hash 2025734992, now seen corresponding path program 22 times [2024-06-28 01:30:21,400 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:30:21,400 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [854817308] [2024-06-28 01:30:21,400 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:30:21,401 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:30:21,408 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:30:22,355 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 01:30:22,355 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:30:22,355 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [854817308] [2024-06-28 01:30:22,355 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [854817308] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:30:22,355 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:30:22,355 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-28 01:30:22,355 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [771767034] [2024-06-28 01:30:22,356 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:30:22,356 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-28 01:30:22,356 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:30:22,356 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-28 01:30:22,356 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=121, Unknown=0, NotChecked=0, Total=156 [2024-06-28 01:30:22,467 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 38 [2024-06-28 01:30:22,467 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 567 places, 838 transitions, 14852 flow. Second operand has 13 states, 13 states have (on average 10.23076923076923) internal successors, (133), 13 states have internal predecessors, (133), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:30:22,467 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:30:22,467 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 38 [2024-06-28 01:30:22,467 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:30:25,639 INFO L124 PetriNetUnfolderBase]: 4546/8647 cut-off events. [2024-06-28 01:30:25,640 INFO L125 PetriNetUnfolderBase]: For 512567/512567 co-relation queries the response was YES. [2024-06-28 01:30:25,734 INFO L83 FinitePrefix]: Finished finitePrefix Result has 55858 conditions, 8647 events. 4546/8647 cut-off events. For 512567/512567 co-relation queries the response was YES. Maximal size of possible extension queue 509. Compared 68168 event pairs, 1390 based on Foata normal form. 2/8041 useless extension candidates. Maximal degree in co-relation 55611. Up to 7465 conditions per place. [2024-06-28 01:30:25,758 INFO L140 encePairwiseOnDemand]: 27/38 looper letters, 837 selfloop transitions, 25 changer transitions 0/870 dead transitions. [2024-06-28 01:30:25,758 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 577 places, 870 transitions, 16740 flow [2024-06-28 01:30:25,758 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 01:30:25,758 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 01:30:25,759 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 175 transitions. [2024-06-28 01:30:25,759 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.41866028708133973 [2024-06-28 01:30:25,759 INFO L175 Difference]: Start difference. First operand has 567 places, 838 transitions, 14852 flow. Second operand 11 states and 175 transitions. [2024-06-28 01:30:25,759 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 577 places, 870 transitions, 16740 flow [2024-06-28 01:30:29,671 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 568 places, 870 transitions, 16666 flow, removed 13 selfloop flow, removed 9 redundant places. [2024-06-28 01:30:29,682 INFO L231 Difference]: Finished difference. Result has 569 places, 839 transitions, 14864 flow [2024-06-28 01:30:29,683 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=14778, PETRI_DIFFERENCE_MINUEND_PLACES=558, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=838, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=24, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=813, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=14864, PETRI_PLACES=569, PETRI_TRANSITIONS=839} [2024-06-28 01:30:29,683 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 527 predicate places. [2024-06-28 01:30:29,683 INFO L495 AbstractCegarLoop]: Abstraction has has 569 places, 839 transitions, 14864 flow [2024-06-28 01:30:29,683 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 10.23076923076923) internal successors, (133), 13 states have internal predecessors, (133), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:30:29,683 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:30:29,683 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 01:30:29,684 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable172 [2024-06-28 01:30:29,684 INFO L420 AbstractCegarLoop]: === Iteration 174 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:30:29,684 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:30:29,684 INFO L85 PathProgramCache]: Analyzing trace with hash -414037310, now seen corresponding path program 22 times [2024-06-28 01:30:29,684 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:30:29,684 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1967319613] [2024-06-28 01:30:29,684 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:30:29,685 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:30:29,692 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:30:31,036 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 01:30:31,036 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:30:31,036 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1967319613] [2024-06-28 01:30:31,036 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1967319613] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:30:31,036 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:30:31,037 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-28 01:30:31,037 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [358066899] [2024-06-28 01:30:31,037 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:30:31,037 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-28 01:30:31,037 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:30:31,037 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-28 01:30:31,037 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=119, Unknown=0, NotChecked=0, Total=156 [2024-06-28 01:30:31,147 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 38 [2024-06-28 01:30:31,147 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 569 places, 839 transitions, 14864 flow. Second operand has 13 states, 13 states have (on average 10.23076923076923) internal successors, (133), 13 states have internal predecessors, (133), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:30:31,147 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:30:31,147 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 38 [2024-06-28 01:30:31,147 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:30:34,208 INFO L124 PetriNetUnfolderBase]: 4559/8668 cut-off events. [2024-06-28 01:30:34,208 INFO L125 PetriNetUnfolderBase]: For 522498/522498 co-relation queries the response was YES. [2024-06-28 01:30:34,298 INFO L83 FinitePrefix]: Finished finitePrefix Result has 56183 conditions, 8668 events. 4559/8668 cut-off events. For 522498/522498 co-relation queries the response was YES. Maximal size of possible extension queue 511. Compared 68304 event pairs, 1407 based on Foata normal form. 2/8058 useless extension candidates. Maximal degree in co-relation 55935. Up to 7618 conditions per place. [2024-06-28 01:30:34,321 INFO L140 encePairwiseOnDemand]: 24/38 looper letters, 827 selfloop transitions, 31 changer transitions 0/866 dead transitions. [2024-06-28 01:30:34,321 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 581 places, 866 transitions, 16804 flow [2024-06-28 01:30:34,322 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-06-28 01:30:34,322 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2024-06-28 01:30:34,322 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 189 transitions. [2024-06-28 01:30:34,322 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3825910931174089 [2024-06-28 01:30:34,322 INFO L175 Difference]: Start difference. First operand has 569 places, 839 transitions, 14864 flow. Second operand 13 states and 189 transitions. [2024-06-28 01:30:34,322 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 581 places, 866 transitions, 16804 flow [2024-06-28 01:30:38,546 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 572 places, 866 transitions, 16728 flow, removed 14 selfloop flow, removed 9 redundant places. [2024-06-28 01:30:38,590 INFO L231 Difference]: Finished difference. Result has 573 places, 841 transitions, 14986 flow [2024-06-28 01:30:38,591 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=14788, PETRI_DIFFERENCE_MINUEND_PLACES=560, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=839, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=29, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=808, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=14986, PETRI_PLACES=573, PETRI_TRANSITIONS=841} [2024-06-28 01:30:38,591 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 531 predicate places. [2024-06-28 01:30:38,591 INFO L495 AbstractCegarLoop]: Abstraction has has 573 places, 841 transitions, 14986 flow [2024-06-28 01:30:38,591 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 10.23076923076923) internal successors, (133), 13 states have internal predecessors, (133), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:30:38,591 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:30:38,591 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 01:30:38,591 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable173 [2024-06-28 01:30:38,591 INFO L420 AbstractCegarLoop]: === Iteration 175 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:30:38,592 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:30:38,592 INFO L85 PathProgramCache]: Analyzing trace with hash -737482440, now seen corresponding path program 23 times [2024-06-28 01:30:38,592 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:30:38,592 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1740167894] [2024-06-28 01:30:38,592 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:30:38,592 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:30:38,599 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:30:39,670 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 01:30:39,670 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:30:39,670 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1740167894] [2024-06-28 01:30:39,670 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1740167894] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:30:39,670 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:30:39,670 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-28 01:30:39,670 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [136119823] [2024-06-28 01:30:39,671 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:30:39,671 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-28 01:30:39,671 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:30:39,671 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-28 01:30:39,671 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=120, Unknown=0, NotChecked=0, Total=156 [2024-06-28 01:30:39,829 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 38 [2024-06-28 01:30:39,829 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 573 places, 841 transitions, 14986 flow. Second operand has 13 states, 13 states have (on average 10.23076923076923) internal successors, (133), 13 states have internal predecessors, (133), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:30:39,829 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:30:39,829 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 38 [2024-06-28 01:30:39,830 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:30:43,143 INFO L124 PetriNetUnfolderBase]: 4583/8705 cut-off events. [2024-06-28 01:30:43,143 INFO L125 PetriNetUnfolderBase]: For 527906/527906 co-relation queries the response was YES. [2024-06-28 01:30:43,235 INFO L83 FinitePrefix]: Finished finitePrefix Result has 56465 conditions, 8705 events. 4583/8705 cut-off events. For 527906/527906 co-relation queries the response was YES. Maximal size of possible extension queue 515. Compared 68531 event pairs, 1408 based on Foata normal form. 2/8091 useless extension candidates. Maximal degree in co-relation 56216. Up to 7594 conditions per place. [2024-06-28 01:30:43,263 INFO L140 encePairwiseOnDemand]: 25/38 looper letters, 822 selfloop transitions, 42 changer transitions 0/872 dead transitions. [2024-06-28 01:30:43,263 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 584 places, 872 transitions, 16947 flow [2024-06-28 01:30:43,264 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-28 01:30:43,264 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-28 01:30:43,264 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 184 transitions. [2024-06-28 01:30:43,264 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.40350877192982454 [2024-06-28 01:30:43,264 INFO L175 Difference]: Start difference. First operand has 573 places, 841 transitions, 14986 flow. Second operand 12 states and 184 transitions. [2024-06-28 01:30:43,264 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 584 places, 872 transitions, 16947 flow [2024-06-28 01:30:47,417 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 573 places, 872 transitions, 16775 flow, removed 57 selfloop flow, removed 11 redundant places. [2024-06-28 01:30:47,429 INFO L231 Difference]: Finished difference. Result has 574 places, 845 transitions, 15024 flow [2024-06-28 01:30:47,429 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=14814, PETRI_DIFFERENCE_MINUEND_PLACES=562, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=841, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=38, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=801, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=15024, PETRI_PLACES=574, PETRI_TRANSITIONS=845} [2024-06-28 01:30:47,429 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 532 predicate places. [2024-06-28 01:30:47,430 INFO L495 AbstractCegarLoop]: Abstraction has has 574 places, 845 transitions, 15024 flow [2024-06-28 01:30:47,430 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 10.23076923076923) internal successors, (133), 13 states have internal predecessors, (133), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:30:47,430 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:30:47,430 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 01:30:47,430 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable174 [2024-06-28 01:30:47,430 INFO L420 AbstractCegarLoop]: === Iteration 176 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:30:47,430 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:30:47,430 INFO L85 PathProgramCache]: Analyzing trace with hash 466569183, now seen corresponding path program 16 times [2024-06-28 01:30:47,430 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:30:47,430 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1353190973] [2024-06-28 01:30:47,431 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:30:47,431 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:30:47,437 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:30:48,486 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 01:30:48,486 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:30:48,486 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1353190973] [2024-06-28 01:30:48,486 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1353190973] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:30:48,486 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:30:48,486 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-28 01:30:48,486 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [519922820] [2024-06-28 01:30:48,486 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:30:48,486 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-28 01:30:48,487 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:30:48,487 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-28 01:30:48,487 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=121, Unknown=0, NotChecked=0, Total=156 [2024-06-28 01:30:48,618 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 38 [2024-06-28 01:30:48,618 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 574 places, 845 transitions, 15024 flow. Second operand has 13 states, 13 states have (on average 10.23076923076923) internal successors, (133), 13 states have internal predecessors, (133), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:30:48,618 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:30:48,618 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 38 [2024-06-28 01:30:48,618 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:30:51,786 INFO L124 PetriNetUnfolderBase]: 4704/8990 cut-off events. [2024-06-28 01:30:51,787 INFO L125 PetriNetUnfolderBase]: For 712815/712815 co-relation queries the response was YES. [2024-06-28 01:30:51,889 INFO L83 FinitePrefix]: Finished finitePrefix Result has 59475 conditions, 8990 events. 4704/8990 cut-off events. For 712815/712815 co-relation queries the response was YES. Maximal size of possible extension queue 519. Compared 71571 event pairs, 1415 based on Foata normal form. 2/8365 useless extension candidates. Maximal degree in co-relation 59225. Up to 7078 conditions per place. [2024-06-28 01:30:51,921 INFO L140 encePairwiseOnDemand]: 25/38 looper letters, 756 selfloop transitions, 126 changer transitions 0/890 dead transitions. [2024-06-28 01:30:51,921 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 585 places, 890 transitions, 17751 flow [2024-06-28 01:30:51,922 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-28 01:30:51,922 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-28 01:30:51,922 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 203 transitions. [2024-06-28 01:30:51,922 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4451754385964912 [2024-06-28 01:30:51,922 INFO L175 Difference]: Start difference. First operand has 574 places, 845 transitions, 15024 flow. Second operand 12 states and 203 transitions. [2024-06-28 01:30:51,922 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 585 places, 890 transitions, 17751 flow [2024-06-28 01:30:57,061 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 577 places, 890 transitions, 17635 flow, removed 30 selfloop flow, removed 8 redundant places. [2024-06-28 01:30:57,073 INFO L231 Difference]: Finished difference. Result has 578 places, 846 transitions, 15210 flow [2024-06-28 01:30:57,073 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=14908, PETRI_DIFFERENCE_MINUEND_PLACES=566, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=845, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=125, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=720, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=15210, PETRI_PLACES=578, PETRI_TRANSITIONS=846} [2024-06-28 01:30:57,073 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 536 predicate places. [2024-06-28 01:30:57,073 INFO L495 AbstractCegarLoop]: Abstraction has has 578 places, 846 transitions, 15210 flow [2024-06-28 01:30:57,073 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 10.23076923076923) internal successors, (133), 13 states have internal predecessors, (133), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:30:57,073 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:30:57,073 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 01:30:57,074 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable175 [2024-06-28 01:30:57,074 INFO L420 AbstractCegarLoop]: === Iteration 177 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:30:57,074 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:30:57,074 INFO L85 PathProgramCache]: Analyzing trace with hash 466573058, now seen corresponding path program 24 times [2024-06-28 01:30:57,074 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:30:57,074 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [429966249] [2024-06-28 01:30:57,074 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:30:57,074 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:30:57,082 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:30:58,025 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 01:30:58,025 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:30:58,025 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [429966249] [2024-06-28 01:30:58,025 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [429966249] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:30:58,025 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:30:58,025 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-28 01:30:58,025 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [571834905] [2024-06-28 01:30:58,025 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:30:58,026 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-28 01:30:58,026 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:30:58,026 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-28 01:30:58,026 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=121, Unknown=0, NotChecked=0, Total=156 [2024-06-28 01:30:58,155 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 38 [2024-06-28 01:30:58,156 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 578 places, 846 transitions, 15210 flow. Second operand has 13 states, 13 states have (on average 10.23076923076923) internal successors, (133), 13 states have internal predecessors, (133), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:30:58,156 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:30:58,156 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 38 [2024-06-28 01:30:58,156 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:31:01,610 INFO L124 PetriNetUnfolderBase]: 4717/8999 cut-off events. [2024-06-28 01:31:01,610 INFO L125 PetriNetUnfolderBase]: For 726895/726895 co-relation queries the response was YES. [2024-06-28 01:31:01,700 INFO L83 FinitePrefix]: Finished finitePrefix Result has 60141 conditions, 8999 events. 4717/8999 cut-off events. For 726895/726895 co-relation queries the response was YES. Maximal size of possible extension queue 521. Compared 71631 event pairs, 1450 based on Foata normal form. 2/8368 useless extension candidates. Maximal degree in co-relation 59890. Up to 7433 conditions per place. [2024-06-28 01:31:01,723 INFO L140 encePairwiseOnDemand]: 25/38 looper letters, 751 selfloop transitions, 126 changer transitions 0/885 dead transitions. [2024-06-28 01:31:01,723 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 591 places, 885 transitions, 17611 flow [2024-06-28 01:31:01,723 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2024-06-28 01:31:01,723 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2024-06-28 01:31:01,723 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 220 transitions. [2024-06-28 01:31:01,723 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.41353383458646614 [2024-06-28 01:31:01,723 INFO L175 Difference]: Start difference. First operand has 578 places, 846 transitions, 15210 flow. Second operand 14 states and 220 transitions. [2024-06-28 01:31:01,724 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 591 places, 885 transitions, 17611 flow [2024-06-28 01:31:06,775 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 578 places, 885 transitions, 16982 flow, removed 27 selfloop flow, removed 13 redundant places. [2024-06-28 01:31:06,786 INFO L231 Difference]: Finished difference. Result has 579 places, 848 transitions, 14972 flow [2024-06-28 01:31:06,786 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=14584, PETRI_DIFFERENCE_MINUEND_PLACES=565, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=846, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=124, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=722, PETRI_DIFFERENCE_SUBTRAHEND_STATES=14, PETRI_FLOW=14972, PETRI_PLACES=579, PETRI_TRANSITIONS=848} [2024-06-28 01:31:06,786 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 537 predicate places. [2024-06-28 01:31:06,786 INFO L495 AbstractCegarLoop]: Abstraction has has 579 places, 848 transitions, 14972 flow [2024-06-28 01:31:06,786 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 10.23076923076923) internal successors, (133), 13 states have internal predecessors, (133), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:31:06,786 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:31:06,786 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 01:31:06,787 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable176 [2024-06-28 01:31:06,787 INFO L420 AbstractCegarLoop]: === Iteration 178 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:31:06,787 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:31:06,787 INFO L85 PathProgramCache]: Analyzing trace with hash 1959290758, now seen corresponding path program 23 times [2024-06-28 01:31:06,787 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:31:06,787 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [246229618] [2024-06-28 01:31:06,787 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:31:06,787 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:31:06,794 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:31:07,752 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 01:31:07,752 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:31:07,752 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [246229618] [2024-06-28 01:31:07,752 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [246229618] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:31:07,752 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:31:07,752 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-28 01:31:07,753 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1300348586] [2024-06-28 01:31:07,753 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:31:07,753 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-28 01:31:07,753 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:31:07,753 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-28 01:31:07,753 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=121, Unknown=0, NotChecked=0, Total=156 [2024-06-28 01:31:07,886 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 38 [2024-06-28 01:31:07,887 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 579 places, 848 transitions, 14972 flow. Second operand has 13 states, 13 states have (on average 10.23076923076923) internal successors, (133), 13 states have internal predecessors, (133), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:31:07,887 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:31:07,887 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 38 [2024-06-28 01:31:07,887 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:31:11,096 INFO L124 PetriNetUnfolderBase]: 4751/9066 cut-off events. [2024-06-28 01:31:11,097 INFO L125 PetriNetUnfolderBase]: For 731485/731485 co-relation queries the response was YES. [2024-06-28 01:31:11,199 INFO L83 FinitePrefix]: Finished finitePrefix Result has 59205 conditions, 9066 events. 4751/9066 cut-off events. For 731485/731485 co-relation queries the response was YES. Maximal size of possible extension queue 526. Compared 72323 event pairs, 1491 based on Foata normal form. 2/8430 useless extension candidates. Maximal degree in co-relation 58957. Up to 7923 conditions per place. [2024-06-28 01:31:11,232 INFO L140 encePairwiseOnDemand]: 27/38 looper letters, 828 selfloop transitions, 47 changer transitions 0/883 dead transitions. [2024-06-28 01:31:11,232 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 589 places, 883 transitions, 17049 flow [2024-06-28 01:31:11,233 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 01:31:11,233 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 01:31:11,233 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 171 transitions. [2024-06-28 01:31:11,233 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4090909090909091 [2024-06-28 01:31:11,233 INFO L175 Difference]: Start difference. First operand has 579 places, 848 transitions, 14972 flow. Second operand 11 states and 171 transitions. [2024-06-28 01:31:11,233 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 589 places, 883 transitions, 17049 flow [2024-06-28 01:31:16,774 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 572 places, 883 transitions, 15350 flow, removed 72 selfloop flow, removed 17 redundant places. [2024-06-28 01:31:16,784 INFO L231 Difference]: Finished difference. Result has 573 places, 855 transitions, 13578 flow [2024-06-28 01:31:16,784 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=13300, PETRI_DIFFERENCE_MINUEND_PLACES=562, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=848, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=40, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=807, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=13578, PETRI_PLACES=573, PETRI_TRANSITIONS=855} [2024-06-28 01:31:16,785 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 531 predicate places. [2024-06-28 01:31:16,785 INFO L495 AbstractCegarLoop]: Abstraction has has 573 places, 855 transitions, 13578 flow [2024-06-28 01:31:16,785 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 10.23076923076923) internal successors, (133), 13 states have internal predecessors, (133), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:31:16,785 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:31:16,785 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 01:31:16,785 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable177 [2024-06-28 01:31:16,785 INFO L420 AbstractCegarLoop]: === Iteration 179 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:31:16,785 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:31:16,785 INFO L85 PathProgramCache]: Analyzing trace with hash 666234324, now seen corresponding path program 24 times [2024-06-28 01:31:16,785 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:31:16,785 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1802413380] [2024-06-28 01:31:16,785 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:31:16,786 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:31:16,793 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:31:17,895 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 01:31:17,895 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:31:17,895 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1802413380] [2024-06-28 01:31:17,895 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1802413380] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:31:17,895 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:31:17,895 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-28 01:31:17,895 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1371366366] [2024-06-28 01:31:17,895 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:31:17,895 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-28 01:31:17,895 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:31:17,896 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-28 01:31:17,896 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=122, Unknown=0, NotChecked=0, Total=156 [2024-06-28 01:31:18,013 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 38 [2024-06-28 01:31:18,014 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 573 places, 855 transitions, 13578 flow. Second operand has 13 states, 13 states have (on average 10.23076923076923) internal successors, (133), 13 states have internal predecessors, (133), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:31:18,014 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:31:18,014 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 38 [2024-06-28 01:31:18,014 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:31:21,268 INFO L124 PetriNetUnfolderBase]: 4785/9134 cut-off events. [2024-06-28 01:31:21,268 INFO L125 PetriNetUnfolderBase]: For 717928/717928 co-relation queries the response was YES. [2024-06-28 01:31:21,367 INFO L83 FinitePrefix]: Finished finitePrefix Result has 55292 conditions, 9134 events. 4785/9134 cut-off events. For 717928/717928 co-relation queries the response was YES. Maximal size of possible extension queue 531. Compared 72976 event pairs, 1483 based on Foata normal form. 2/8492 useless extension candidates. Maximal degree in co-relation 55049. Up to 7788 conditions per place. [2024-06-28 01:31:21,397 INFO L140 encePairwiseOnDemand]: 27/38 looper letters, 789 selfloop transitions, 97 changer transitions 0/894 dead transitions. [2024-06-28 01:31:21,397 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 583 places, 894 transitions, 15675 flow [2024-06-28 01:31:21,398 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 01:31:21,398 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 01:31:21,398 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 177 transitions. [2024-06-28 01:31:21,398 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.423444976076555 [2024-06-28 01:31:21,398 INFO L175 Difference]: Start difference. First operand has 573 places, 855 transitions, 13578 flow. Second operand 11 states and 177 transitions. [2024-06-28 01:31:21,398 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 583 places, 894 transitions, 15675 flow [2024-06-28 01:31:26,150 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 575 places, 894 transitions, 15561 flow, removed 10 selfloop flow, removed 8 redundant places. [2024-06-28 01:31:26,160 INFO L231 Difference]: Finished difference. Result has 577 places, 863 transitions, 13858 flow [2024-06-28 01:31:26,160 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=13464, PETRI_DIFFERENCE_MINUEND_PLACES=565, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=855, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=89, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=764, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=13858, PETRI_PLACES=577, PETRI_TRANSITIONS=863} [2024-06-28 01:31:26,161 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 535 predicate places. [2024-06-28 01:31:26,161 INFO L495 AbstractCegarLoop]: Abstraction has has 577 places, 863 transitions, 13858 flow [2024-06-28 01:31:26,161 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 10.23076923076923) internal successors, (133), 13 states have internal predecessors, (133), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:31:26,161 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:31:26,161 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 01:31:26,161 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable178 [2024-06-28 01:31:26,161 INFO L420 AbstractCegarLoop]: === Iteration 180 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:31:26,161 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:31:26,161 INFO L85 PathProgramCache]: Analyzing trace with hash -116901010, now seen corresponding path program 25 times [2024-06-28 01:31:26,161 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:31:26,161 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1047754804] [2024-06-28 01:31:26,161 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:31:26,162 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:31:26,169 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:31:27,193 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 01:31:27,193 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:31:27,193 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1047754804] [2024-06-28 01:31:27,194 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1047754804] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:31:27,194 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:31:27,194 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-28 01:31:27,194 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2122731419] [2024-06-28 01:31:27,194 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:31:27,194 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-28 01:31:27,194 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:31:27,194 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-28 01:31:27,194 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=121, Unknown=0, NotChecked=0, Total=156 [2024-06-28 01:31:27,311 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 38 [2024-06-28 01:31:27,311 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 577 places, 863 transitions, 13858 flow. Second operand has 13 states, 13 states have (on average 10.23076923076923) internal successors, (133), 13 states have internal predecessors, (133), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:31:27,311 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:31:27,311 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 38 [2024-06-28 01:31:27,311 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand